CN102653935B - Vibrating device with adjustable amplitude and road roller - Google Patents
Vibrating device with adjustable amplitude and road roller Download PDFInfo
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- CN102653935B CN102653935B CN201210133814.3A CN201210133814A CN102653935B CN 102653935 B CN102653935 B CN 102653935B CN 201210133814 A CN201210133814 A CN 201210133814A CN 102653935 B CN102653935 B CN 102653935B
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- amplitude
- vibrating device
- eccentric block
- movable eccentric
- block
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Abstract
The invention provides a vibrating device with an adjustable amplitude, and the device comprises an eccentric shaft and an amplitude adjusting device installed on the eccentric shaft and capable of rotating with the eccentric shaft; the amplitude adjusting device comprises a shell, a limit stop installed in the shell and arranged along the circumferential direction of the shell, a movable eccentric block and an elastomer with pre-tightening force; the limit stop is fixed in the shell, the movable eccentric block is movably installed in the shell, and the elastomer is installed between the limit stop and the movable eccentric block; and the eccentric position of the movable eccentric block is located on the same eccentric side of the eccentric shaft. The invention further provides a road roller. The technical scheme of the invention realizes the multilevel adjustment of the amplitude of the vibrating device, the vibrating device has simple structure and low cost, no additional adjusting power is added, and the vibrating device provided by the invention is applied on the road roller to fit for various types of different roadbed conditions.
Description
Technical field
The present invention relates to mechanical field, in particular to a kind of amplitude adjustable vibrating device and the road roller that includes the adjustable vibrating device of this amplitude.
Background technology
At present, vibrating roller is the key equipment of construction of the highway, and existing vibrating roller commonly large and small two kinds of amplitudes is adjustable.Because actual roadbed situation varies, need to apply different exciting forces according to different road surface situations, the multistage adjusting that realizes amplitude is to address this problem an important approach.
The device that exists some to realize the multistage adjusting of amplitude or step-less adjustment in existing correlation technique, but need the extra complicated governor motion that increases, its common implementation and technical problem are as follows:
(1) existing mode generally adopts the mode of many (cover) axle, multi-eccentric combination, and steel wheel internal construction is complicated;
(2) multiaxis mode need to increase extra motivation of adjustment.
Summary of the invention
For one of solving the problems of the technologies described above, the invention provides the vibrating device that a kind of amplitude can multistage adjusting.
The vibrating device that amplitude provided by the invention is adjustable, the amplitude modulation apparatus that comprises eccentric shaft and be arranged on described eccentric shaft and can rotate with described eccentric shaft; Described amplitude modulation apparatus comprises housing, and be arranged in described housing, the block along described housing circumferential arrangement, movable eccentric block and with the elastic body of pretightning force; Described block is fixed in described housing, and described movable eccentric block is arranged in described housing movably, and described elastic body is arranged between described block and described movable eccentric block; The eccentric part of described movable eccentric block is positioned at eccentric phase the same side of described eccentric shaft.
By the technical solution of the present invention, realized the multistage adjusting of vibrating device amplitude, it is simple in structure, cost is low, and do not need to increase extra motivation of adjustment, and vibrating device of the present invention is applied on road roller, can adapt to various roadbed situation.
Preferably, described amplitude modulation apparatus also comprises waveform track; Described waveform track is fixed in described housing and in the outside that is radially positioned at described movable eccentric block; Described movable eccentric block elastic rolling mechanism is radially installed, described elastic rolling mechanism can move by the concave surface along described waveform track with described eccentric block; The total length of the described concave surface of described waveform track is not less than the stroke of described movable eccentric block, and the radius of described concave surface and arc length are along with the direction that described elastomeric deflection increases increases and increases.This structure has been avoided the impact on vibrating device amplitude of fluctuation of speed phenomenon that non-active change eccentric shaft rotating speed occurs, and the disturbance under amplitude stability can be revised voluntarily; And avoid when the amplitude of vibrating device has disturbance slightly, elastic rolling device is just more easily deviate from its situation of residing concave surface originally.
Preferably, described elastic rolling mechanism comprises linear springs, roller; On described movable eccentric block, have the radial blind holes of tape guide groove, shown in linear springs be placed in described radial blind holes; Described roller is arranged on the end of described linear springs by pressing plate.This technical scheme, is used linear springs to realize roller switching between different concave surfaces on waveform track, make amplitude modulation apparatus with the variation of eccentric shaft rotating speed adjustable amplitude, simple in structure, be easy to realize.
Preferably, in the axial both sides of described waveform track, be also provided with back-up ring, described back-up ring is fixedly mounted in described housing.Increase by two back-up rings, can prevent that clamping stagnation from appearring in elastic body and waveform interorbital.
Preferably, described elastic body is with the Compress Spring of precompression or with the extension spring of pretension.Described elastic body is used spring, simple in structure, be easy to realize, and described pretightning force easily arranges.
Preferably, described housing comprises inner ring, outer ring, the first cover plate and the second cover plate; One end of described inner ring and outer ring is fixed together by described the first cover plate, and described the second cover plate can be dismantled the other end that is fixed on described inner ring and described outer ring.Use the first cover plate and the second cover plate by two bandings of amplitude modulation apparatus, can avoid external impurities to enter the work that affects vibrating device in amplitude modulation apparatus, and this kind of structure installation is simple, in the time need to safeguarding the parts of amplitude modulation apparatus inside, only need open the second cover plate, easy to maintenance.
Preferably, the vibrating device that described amplitude is adjustable comprises symmetrically arranged two described amplitude modulation apparatus, also comprises synchronous connecting rod; The two ends of described synchronous connecting rod are fixedly connected with amplitude modulation apparatus described in two.Adopt two symmetrically arranged amplitude modulation apparatus, vibrate more steady.
Preferably, on relative described the first cover plate of amplitude modulation apparatus described in two, all have deep-slotted chip breaker, described synchronous connecting rod is fixedly connected with movable eccentric block described in two respectively through described deep-slotted chip breaker and two ends; The position of described deep-slotted chip breaker and circumferential lengths corresponding with the travel path of described movable eccentric block is not less than the stroke of described movable eccentric block, gapped between the radial edges in described synchronous connecting rod and described deep-slotted chip breaker.Use synchronous connecting rod to connect two movable eccentric blocks, can guarantee that the amplitude of two amplitude modulation apparatus is identical, realize the synchronous vibration of two amplitude modulation apparatus, and adopt said structure, can guarantee that synchronous connecting rod does not interfere with eccentric shaft and amplitude modulation apparatus.
Preferably, on described movable eccentric block, be drilled with screw, the described screw bolt of described synchronous connecting rod and described movable eccentric block.Use is threaded, simple, and cost is low, and convenient disassembly is easy to safeguard.
The present invention also provides a kind of road roller, includes arbitrary described adjustable vibrating device of amplitude in technique scheme.Whole beneficial effects with the adjustable vibrating device of above-mentioned amplitude, repeat no more.
The adjustable vibrating device of amplitude provided by the invention can also be applied in the middle of other plant equipment, cannot be exhaustive at this, repeat no more, but its application all should be within protection scope of the present invention.
In sum, by technical scheme of the present invention, realized the multistage adjusting of vibrating device amplitude, it is simple in structure, and cost is low, and does not need to increase extra motivation of adjustment, vibrating device of the present invention is applied on road roller, can adapts to various roadbed situation.
Accompanying drawing explanation
Fig. 1 is according to the perspective view of the adjustable vibrating device of the amplitude of the embodiment of the present invention;
Fig. 2 is the fractionation schematic diagram according to the amplitude modulation apparatus of the embodiment of the present invention;
Fig. 3 is the view when clockwise rotating according to the amplitude modulation apparatus of the embodiment of the present invention;
Fig. 4 is the view of amplitude modulation apparatus when rotating counterclockwise in Fig. 3.
Wherein, in Fig. 1 to Fig. 4, the corresponding relation between Reference numeral and component names is:
1 eccentric shaft 2 amplitude modulation apparatus 3 synchronous connecting rods
The movable eccentric block 24 elastic body 25 waveform tracks of 21 housing 22 block 23
211 inner ring 212 outer ring 213 first cover plate 214 second cover plates
231 radial blind holes 232 screws
251 concave surfaces
2131 deep-slotted chip breakers
26 elastic rolling mechanisms
261 linear springs 262 roller 263 pressing plates
28 back-up rings
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 1 is according to the perspective view of the adjustable vibrating device of the amplitude of the embodiment of the present invention; Fig. 2 is the fractionation schematic diagram according to the amplitude modulation apparatus of the embodiment of the present invention; Fig. 3 is the view when clockwise rotating according to the amplitude modulation apparatus of the embodiment of the present invention; Fig. 4 is the view of amplitude modulation apparatus when rotating counterclockwise in Fig. 3.
As shown in Figures 1 to 4, the vibrating device that amplitude provided by the invention is adjustable, comprises eccentric shaft 1 and is arranged on eccentric shaft 1 and the amplitude modulation apparatus 2 that can rotate with eccentric shaft 1; Amplitude modulation apparatus 2 comprises housing 21, and be arranged in housing 21, the block 22 along housing 21 circumferential arrangement, movable eccentric block 23 and with the elastic body 24 of pretightning force; Block 22 is fixed in housing 21, and movable eccentric block 23 is arranged in housing 21 movably, and elastic body 24 is arranged between block 22 and movable eccentric block 23; The eccentric part of movable eccentric block 23 is positioned at eccentric phase the same side of eccentric shaft 1.
By the above embodiments of the present invention, because the eccentric part of movable eccentric block 23 and the bias of eccentric shaft 1 are in the same side, guarantee that eccentric throw when eccentric shaft 1 turns clockwise or do not turn is maximum, it is maximum that amplitude also reaches, along with rotating counterclockwise of eccentric shaft 1, movable eccentric block 23 starts to rotate, amplitude slowly diminishes, realized the multistage adjusting of vibrating device amplitude, it is simple in structure, and cost is low, and does not need to increase extra amplitude motivation of adjustment, vibrating device of the present invention is applied on road roller, can adapts to various roadbed situation.
The operating principle of the vibrating device that this amplitude is adjustable, as shown in Figure 3 and Figure 4:
As Fig. 3, when eccentric shaft 1 clockwise low speed rotation, movable eccentric block 23 is close to block 22, and now the amplitude of amplitude modulation apparatus 2 is maximum, thereby the amplitude of whole vibrating device is maximum.
As Fig. 4, when eccentric shaft 1 is rotated counterclockwise, because movable eccentric block 23 self inertia are by compresses elastomeric 24, and rotating speed is higher, elastic body 24 decrements are larger, and eccentric shaft 1 will diminish gradually with the whole eccentricity that movable eccentric block 23 forms, so while being rotated counterclockwise, the eccentricity that different rotary speed is corresponding different, thus can realize the multistage adjusting of amplitude device 2 amplitudes.
Therefore, by adjusting the rotation direction of eccentric shaft 1 and the adjustment that rotating speed can be realized amplitude, not needing increases extra motivation of adjustment, and it is simple in structure, is easy to realize, and cost is low.
Preferably, described elastic body 24 can make the Compress Spring with precompression, can be also the extension spring with pretension.In the present embodiment, described elastic body 24 can be Compress Spring, uses Compress Spring as elastic body 24, simple in structure, be easy to realize, and described pretightning force can be precompression, easily arranges.
In a kind of specific embodiment, as shown in Figure 2, amplitude modulation apparatus 2 also comprises waveform track 25; Waveform track 25 is fixed in housing 21 and in the outside that is radially positioned at movable eccentric block 23; Movable eccentric block 23 elastic rolling mechanism 26 is radially installed, described elastic rolling mechanism 26 can move by the concave surface 251 along waveform track 25 with described eccentric block 23; The whole stroke of the scope covering activity eccentric block 23 of described concave surface 251, be the stroke that the length of described waveform track 25 is not less than movable eccentric block 23, and the radius of the radian of described concave surface 251 and arc length are along with the direction that the compress variation of elastic body 24 increases increases and increases.In the present embodiment, what adopt because of elastic body 24 is Compress Spring, thereby along with the increase of the decrement of spring, the Oscillation Amplitude of amplitude modulation apparatus 2 also increases, and correspondingly the radius of concave surface 251 and arc length radian also and then increase.
In the present embodiment, the radius of concave surface 251 and arc length follow amplitude modulation apparatus 2 Oscillation Amplitude increase and increase, and waveform track 25 is radially being arranged on the outside of movable eccentric block 23, elastic rolling device 26 can roll along the concave surface 251 of described waveform track 25, and elastic rolling device 26 can not leave corrugated concave surface 251 under little disturbance operating mode, when people is for a change during the rotating speed of eccentric shaft 1, elastic rolling device 26 can leave current concave surface smoothly.This structure has been avoided the impact on vibrating device amplitude of fluctuation of speed phenomenon that non-active change eccentric shaft 1 rotating speed occurs, and the disturbance under amplitude stability can be revised voluntarily.
In addition, increase along with elastic body 24 decrements, when the amplitude of vibrating device has disturbance slightly, elastic rolling device 26 is just more easily deviate from its residing concave surface 251 originally, the radius of concave surface 251 and arc length radian, along with the direction of the decrement increase of elastic body 24 increases and increases, can be avoided the generation of this kind of situation effectively.
In a kind of specific embodiment, elastic rolling device 26 comprises linear springs 261 and roller 262; On movable eccentric block 23, have the radial blind holes 231 of tape guide groove, described linear springs 261 is placed in radial blind holes 231; Described roller 262 is arranged on the end of described linear springs 261 by pressing plate 263.On pressing plate 263, have guide rib, match with the gathering sill of radial blind holes 231 on movable eccentric block 23, realize elastic rolling device 26 and both can roll along the concave surface of waveform track 25, again can be along the radial expansion of eccentric block 23.
In the present embodiment, use linear springs 261 to realize roller 262 switching between different concave surfaces on waveform track 25, make amplitude modulation apparatus 2 with the variation of eccentric shaft 1 rotating speed adjustable amplitude, simple in structure, be easy to realize.
Further, in the axial both sides at waveform track 25, be also provided with back-up ring 28, back-up ring 28 is fixedly mounted in housing.Increase by two back-up rings 28 and be axially disposed within the both sides of waveform track 25, can prevent that clamping stagnation from appearring in 25, elastic body 24 and waveform track.
In a kind of specific embodiment, as shown in Figure 2, housing 21 comprises inner ring 211, outer ring 212, the first cover plate 213 and the second cover plate 214; One end of inner ring 211 and outer ring 212 is fixed together by the first cover plate 213, and the second cover plate 214 can be dismantled the other end that is fixed on inner ring 211 and outer ring 212.
In the present embodiment, use the first cover plate 213 and the second cover plate 214 by two bandings of amplitude modulation apparatus 2, can avoid external impurities to enter the interior work that affects vibrating device of amplitude modulation apparatus 2, and this kind of structure installed simple, in the time need to safeguarding the parts of amplitude modulation apparatus 2 inside, only need open the second cover plate 214, easy to maintenance.
Described housing 21 rotates together with eccentric shaft 1, can realize by the mechanical drive mode of the routines such as flat key, spline, in the present embodiment, adopts flat key to realize.
In a kind of specific embodiment, as shown in Figure 1, the vibrating device that amplitude is adjustable comprises symmetrically arranged two amplitude modulation apparatus 2, also comprises synchronous connecting rod 3; The two ends of synchronous connecting rod 3 are fixedly connected with two amplitude modulation apparatus 2.
In the present embodiment, realized two amplitude modulation apparatus and driven and realize vibration by an eccentric shaft 1, be symmetrical arranged, vibrated more steady.
Further, on the first relative cover plate 213 of two amplitude modulation apparatus, all have deep-slotted chip breaker 2131, synchronous connecting rod 3 is fixedly connected with the movable eccentric block 23 in two amplitude modulation apparatus respectively through deep-slotted chip breaker 2131 and two ends; Corresponding and the circumferential lengths of the travel path of the position of described deep-slotted chip breaker 2131 and described movable eccentric block 23 is not less than the stroke of described movable eccentric block 23, gapped between the radial edges in described synchronous connecting rod 3 and described deep-slotted chip breaker 2131.The structure of the present embodiment, can make synchronous connecting rod 3 rotate with movable eccentric block 23, and not interfere with eccentric shaft 1 and housing 21.Thereby the amplitude that can guarantee two amplitude modulation apparatus 2 is identical, realize the synchronous vibration of two amplitude modulation apparatus 2.
Particularly, movable eccentric block 23 with the connected mode of synchronous connecting rod 3 can be: on movable eccentric block 23, be drilled with screw 232, screw 232 bolts of synchronous connecting rod 3 and movable eccentric block 23.Use is threaded, simple, and cost is low, and convenient disassembly is easy to safeguard.
The present invention also provides a kind of road roller, includes the adjustable vibrating device of arbitrary given amplitude in technique scheme.Road roller provided by the invention, by adjusting rotation direction and the speed of vibrating device, can realize the multistage adjusting of amplitude, and simple in structure, cost is also low, can be applied in various roadbed situation, and not need to increase extra motivation of adjustment.
The adjustable vibrating device of amplitude provided by the invention can also be applied in the middle of other plant equipment, cannot be exhaustive at this, repeat no more, but its application all should be within protection scope of the present invention.
In sum, by technical scheme of the present invention, realized the multistage adjusting of vibrating device amplitude, it is simple in structure, and cost is low, and does not need to increase extra motivation of adjustment, vibrating device of the present invention is applied on road roller, can adapts to various roadbed situation.
In the present invention, term " first ", " second " be the object for describing only, and can not be interpreted as indication or hint relative importance, and term " a plurality of " refers to two or more, unless separately there is clear and definite restriction.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " all should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the adjustable vibrating device of amplitude, is characterized in that,
Comprise eccentric shaft (1) and be arranged on the amplitude modulation apparatus (2) that described eccentric shaft (1) is upper and can rotate with described eccentric shaft (1),
Described amplitude modulation apparatus (2) comprises housing (21), and be arranged in described housing (21), the block (22) along described housing (21) circumferential arrangement, movable eccentric block (23) and with the elastic body (24) of pretightning force
Described block (22) is fixed in described housing (21), described movable eccentric block (23) is arranged in described housing (21) movably, described elastic body (24) is arranged between described block (22) and described movable eccentric block (23)
The eccentric part of described movable eccentric block (23) is positioned at eccentric phase the same side of described eccentric shaft (1);
Described amplitude modulation apparatus also comprises waveform track (25),
Described waveform track (25) is fixed in described housing (21) and in the outside that is radially positioned at described movable eccentric block (23),
Described movable eccentric block (23) elastic rolling mechanism (26) is radially installed, described elastic rolling mechanism (26) can be mobile along the concave surface (251) of described waveform track (25) with described eccentric block (23),
The length of described waveform track (25) is not less than the stroke of described movable eccentric block (23), and the radius of described concave surface (251) and arc length are along with the direction that the deflection of described elastic body (24) increases increases and increases.
2. the adjustable vibrating device of amplitude according to claim 1, is characterized in that,
Described elastic rolling mechanism (26) comprises linear springs (261), roller (262);
On described movable eccentric block (23), have the radial blind holes (231) of tape guide groove, described linear springs (261) is placed in described radial blind holes (231);
Described roller (262) is arranged on the end of described linear springs (261) by pressing plate (263).
3. the adjustable vibrating device of amplitude according to claim 1, is characterized in that,
In the axial both sides of described waveform track (25), be also provided with back-up ring (28), described back-up ring (28) is fixedly mounted in described housing.
4. the adjustable vibrating device of amplitude according to claim 1, is characterized in that,
Described elastic body (24) is for the Compress Spring of precompression or with the extension spring of pretension.
5. according to the arbitrary described adjustable vibrating device of amplitude of claim 1 to 4, it is characterized in that,
Described housing (21) comprises inner ring (211), outer ring (212), the first cover plate (213) and the second cover plate (214);
One end of described inner ring (211) and outer ring (212) is fixed together by described the first cover plate (213), and described the second cover plate (214) can be dismantled the other end that is fixed on described inner ring (211) and described outer ring (212).
6. the adjustable vibrating device of amplitude according to claim 5, is characterized in that,
The vibrating device that described amplitude is adjustable comprises symmetrically arranged two described amplitude modulation apparatus (2), also comprises synchronous connecting rod (3);
The two ends of described synchronous connecting rod (3) are fixedly connected with amplitude modulation apparatus described in two (2).
7. the adjustable vibrating device of amplitude according to claim 6, is characterized in that,
On relative described the first cover plate (213) of amplitude modulation apparatus described in two (2), all have deep-slotted chip breaker (2131), described synchronous connecting rod (3) is fixedly connected with movable eccentric block (23) described in two respectively through described deep-slotted chip breaker (2131) and two ends;
Corresponding and the circumferential lengths of the travel path of the position of described deep-slotted chip breaker (2131) and described movable eccentric block (23) is not less than the stroke of described movable eccentric block (23), gapped between the radial edges in described synchronous connecting rod (3) and described deep-slotted chip breaker (2131).
8. the adjustable vibrating device of amplitude according to claim 7, is characterized in that,
On described movable eccentric block (23), be drilled with screw (232), described synchronous connecting rod (3) and described screw (232) bolt.
9. a road roller, is characterized in that, includes as the adjustable vibrating device of amplitude as described in arbitrary in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210133814.3A CN102653935B (en) | 2012-05-03 | 2012-05-03 | Vibrating device with adjustable amplitude and road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210133814.3A CN102653935B (en) | 2012-05-03 | 2012-05-03 | Vibrating device with adjustable amplitude and road roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102653935A CN102653935A (en) | 2012-09-05 |
| CN102653935B true CN102653935B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210133814.3A Expired - Fee Related CN102653935B (en) | 2012-05-03 | 2012-05-03 | Vibrating device with adjustable amplitude and road roller |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233931B (en) * | 2014-08-19 | 2017-01-11 | 湖南三一路面机械有限公司 | Amplitude adjusting device, vibration device and road roller |
| EP3642419A4 (en) | 2017-06-19 | 2021-01-20 | Volvo Construction Equipment AB | Single drum surface compactor machine |
| CN111877102B (en) * | 2020-07-31 | 2022-04-26 | 山东道智盛信息科技有限公司 | Environment-friendly is repaiied and is used from walking tamping unit |
| CN115318626A (en) * | 2022-08-22 | 2022-11-11 | 内江师范学院 | Grit processing apparatus for construction engineering |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1426775A (en) * | 1972-10-19 | 1976-03-03 | Buckau Wolf Maschf R | Vibrating roller |
| US4342523A (en) * | 1981-02-24 | 1982-08-03 | Koehring Company | High-low force amplitude device |
| GB2108235A (en) * | 1981-10-28 | 1983-05-11 | Dynapac Maskin Ab | Device enabling continous adjustment of the vibration amplitude of rotating eccentric elements |
| CN2052783U (en) * | 1989-06-13 | 1990-02-14 | 建设部长沙建筑机械研究所 | Multiple function road roller |
-
2012
- 2012-05-03 CN CN201210133814.3A patent/CN102653935B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1426775A (en) * | 1972-10-19 | 1976-03-03 | Buckau Wolf Maschf R | Vibrating roller |
| US4342523A (en) * | 1981-02-24 | 1982-08-03 | Koehring Company | High-low force amplitude device |
| GB2108235A (en) * | 1981-10-28 | 1983-05-11 | Dynapac Maskin Ab | Device enabling continous adjustment of the vibration amplitude of rotating eccentric elements |
| CN2052783U (en) * | 1989-06-13 | 1990-02-14 | 建设部长沙建筑机械研究所 | Multiple function road roller |
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| CN102653935A (en) | 2012-09-05 |
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