CN112046624B

CN112046624B - Vibration damping device, road roller and control method of road roller

Info

Publication number: CN112046624B
Application number: CN202010898975.6A
Authority: CN
Inventors: 邓习树; 雷发荣; 黄志亮
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-08-20
Anticipated expiration: 2040-08-31
Also published as: CN112046624A

Abstract

The invention provides a vibration damping device, a road roller and a control method of the road roller. The damping device is arranged between a cab and a frame of the road roller and comprises a first damping assembly and a second damping assembly. The first end of the first vibration damping assembly is connected with the frame and the cab, and the frame and the cab can be tensioned, so that the rigidity between the cab and the frame is improved. The second vibration attenuation component comprises a damping vibration attenuation structure, and two ends of the damping vibration attenuation structure are respectively connected with the cab and the frame. The technical scheme of the invention not only can play a role in damping vibration in the normal working state of the road roller, but also can reduce the resonance degree of a cab when the vibration of the road roller is started and stopped. Therefore, the technical scheme of the invention improves the driving comfort and the driving safety degree of the road roller and reduces the maintenance cost of the road roller.

Description

Vibration damping device, road roller and control method of road roller

Technical Field

The invention relates to the technical field of road rollers, in particular to a vibration damping device, a road roller and a control method of the road roller.

Background

For the road roller, the roller exciting force is large in the working state, the exciting force from the roller is transmitted to the cab through the frame, so that the cab is easy to shake and vibrate, the driving comfort degree of a driver in the cab is low, the driver is easy to fatigue, and the driving safety degree is reduced.

Disclosure of Invention

The present invention is directed to solving at least one of the above problems.

To this end, a first object of the present invention is to provide a vibration damping device.

A second object of the invention is to provide a road roller.

A third object of the invention is to provide a method of controlling a road roller.

In order to achieve the first object of the invention, the technical scheme provides a vibration damping device which is arranged between a cab and a frame of a road roller, wherein the vibration damping device comprises a first vibration damping component, and the first end of the first vibration damping component is connected with the frame or the cab; the second vibration attenuation component comprises a damping vibration attenuation structure, and two ends of the damping vibration attenuation structure are respectively connected with the cab and the frame; the first vibration reduction assembly can tension the frame and the cab, so that rigidity between the cab and the frame is improved.

This technical scheme can improve the rigidity between frame and the driver's cabin through first damping subassembly, avoids frame and driver's cabin to take place resonance. First damping subassembly and second damping subassembly are mutually supported, effectively reduce the driver's cabin under the state of starting to vibrate and/or under the state of stopping vibration and/or the vibration under the normal operating condition, guarantee navigating mate's comfortable degree and degree of safety, avoided the driver's cabin to cause the damage because of the vibration simultaneously, extension driver's cabin life reduces the cost of maintenance of road roller. From this, this technical scheme not only can avoid the driver's cabin resonance of appearing when the oscillation starting or the vibration stopping, can also effectively avoid the driver's cabin to appear because of rocking that the damping action leads to when the oscillation starting or the vibration stopping through mutually supporting of first damping subassembly and second damping subassembly, further ensures driver's comfortable degree and safe degree from this.

In addition, the above technical solution of the present invention may further have the following additional technical features:

in the technical scheme, the first vibration reduction assembly has a first working state and a second working state; in a first working state, the first vibration damping assembly is rigidly or elastically connected between the frame and the cab to tension the frame and the cab; in a second working state, a second end of the first vibration damping assembly, which is opposite to the first end, is separated from the cab or the frame, or the first vibration damping assembly releases the elastic connection between the frame and the cab; the first vibration reduction assembly is switched to a first working state under the vibration starting state and/or the vibration stopping state of the road roller, and the first vibration reduction assembly is switched to a second working state after the vibration starting state and/or the vibration stopping state of the road roller are/is finished.

This technical scheme adopts first damping subassembly to implement the damping to the driver's cabin in the start vibration state and/or the state of stopping vibration to reach the resonance's that appears in driver's cabin and gyro wheel under avoiding above state mesh. In addition, the first vibration reduction assembly of the technical scheme is switched to the second working state after the vibration starting state and/or the vibration stopping state are finished so as to stop performing vibration reduction on the cab, and in the state, the second vibration reduction assembly performs vibration reduction on the cab through the damping effect. The technical scheme can effectively improve the driving comfort degree and the driving safety degree of the driver, avoid the driving fatigue and discomfort of the driver, prolong the service life of the road roller and reduce the maintenance cost of the road roller. This technical scheme is in the short time under the start vibration state and/or under the off-vibration state with driver's cabin and frame be even as an organic whole, changes the mode of driver's cabin from this, avoids the driver's cabin resonance problem, avoids the driver's cabin to vibrate by a wide margin and rock when starting vibration or off-vibration.

In any technical scheme, the first vibration damping assembly comprises one or more supporting assemblies and is connected with the frame, the supporting assemblies are abutted against the cab in the first working state of the first vibration damping assembly, and the supporting assemblies are separated from the cab in the second working state of the first vibration damping assembly; the support assembly includes: a first drive assembly; a first support part extending from the surface of the frame in the direction of the cab and provided with a support shaft; the second supporting part is movably connected with the first supporting part; the first driving assembly drives the second supporting portion to extend out relative to the first supporting portion so that the first vibration reduction assembly is switched to a first working state, and the first driving assembly drives the second supporting portion to fall back relative to the first supporting portion so that the first vibration reduction assembly is switched to a second working state.

This technical scheme realizes the switching of first damping subassembly between first operating condition and second operating condition through the structure or the state change of supporting component, and its simple structure, the stable performance is easily maintained and is changed. The first supporting part moves up and down along the supporting shaft between the two second supporting parts, and the dislocation or the blocking are not easy to occur. Therefore, the first supporting part and the second supporting part which are matched with each other can ensure the working stability degree of the supporting component.

In any of the above solutions, the first driving assembly includes: the fixed block is arranged on the frame; the second sliding chute is arranged above the fixed block; the sliding block is suitable for sliding in the second sliding groove; the elastic piece is respectively connected with the fixed block and the sliding block; the first inhaul cable is arranged at one end of the sliding block, which is far away from the elastic piece; the power supply assembly comprises a power supply part, a push-pull rod connected with the power supply part and a connecting piece arranged at one end of the push-pull rod far away from the power supply part, and a first pull cable is connected with the connecting piece; the power supply assembly drives the sliding block to move along the second sliding groove to the first direction by pulling the first inhaul cable so that the second supporting portion stretches out relative to the first supporting portion, the power supply assembly enables the sliding block to move along the second sliding groove to the second direction under the action of the pulling force of the elastic piece by releasing the first inhaul cable, the second supporting portion falls back relative to the first supporting portion, and the first direction and the second direction are opposite.

This technical scheme passes through fixed block, second spout, slider, elastic component, first cable and power supply subassembly and realizes the control to the second supporting part. The above components are simple in structure and easy to process and manufacture. And the first inhaul cable is pulled through the power supply part, the push-pull rod and the connecting piece so as to drive the sliding block to move, the second supporting part is extended or fallen back relative to the first supporting part, the structure is simple, and the cost is reduced.

In any of the above technical solutions, the power supply assembly further includes a first bracket assembly, the first bracket assembly including a bottom plate; one or more first brackets which are arranged on the bottom plate and support the power supply part; one or more second brackets which are arranged on the bottom plate and support the push-pull rod; one or more third supports are arranged on the bottom plate and provided with a first inhaul cable through hole for the first inhaul cable to penetrate through so as to support the first inhaul cable.

This technical scheme accessible power supply subassembly realizes controlling a plurality of first cables and a plurality of second supporting part simultaneously, simplifies product structure and spare part from this, reduction in production cost improves damping efficiency. The first bracket component can effectively support and fix the power supply part, the push-pull rod and the first pull cable so as to ensure the stability of the sliding block during sliding.

In any of the above technical solutions, the first vibration attenuation module includes one or more compression modules, the compression module compresses the damping vibration attenuation structure in the first working state, and the compression module rebounds the damping vibration attenuation structure in the second working state; the compression assembly comprises a second driving assembly arranged on the frame; the second inhaul cable is respectively connected with the second driving assembly and the cab; the second driving assembly enables the damping vibration attenuation structure to be compressed by pulling the second inhaul cable, and enables the damping vibration attenuation structure to rebound by releasing the second inhaul cable. The compression assembly improves the rigidity of the damping vibration attenuation structure by compressing the damping vibration attenuation structure so as to realize rigid connection between the cab and the frame. Therefore, the compression assembly can conveniently and flexibly adjust and control the elasticity of the damping vibration attenuation structure. The second driving assembly and the second inhaul cable which are matched with each other can compress the damping vibration attenuation structure by applying pulling force, and the damping vibration attenuation structure is stable in structure and convenient to control.

In any of the above solutions, the compressing assembly further comprises a second bracket assembly, which comprises one or more fourth brackets, which extend from the frame and support the second driving assembly; one or more fifth brackets extending from the frame and supporting the second cable.

The second bracket component can provide stable support for the second driving component and the second inhaul cable so as to ensure that the first vibration reduction component can be stably switched between the first working state and the second working state.

In any of the above technical solutions, the compression assembly further includes a pulley assembly disposed on the cab and/or the frame and adapted to adjust a tension applying direction of the second cable. The pulley component comprises a first pulley arranged on the frame; the second pulley is arranged above the cab; the third pulley is arranged on the frame; the second pulley and the third pulley are arranged oppositely, the first pulley is arranged between the second driving assembly and the third pulley, and the second inhaul cable extends out of the second driving assembly, sequentially surrounds the first pulley, the second pulley and the third pulley and is connected with the cab.

The pulley assembly may be one or more in number, and functions to change or adjust a tension applying direction of the second cable and increase the tension applied to the second cable, to ensure that the second cable pulls the cab floor in a direction perpendicular to the cab floor, to ensure that the cab floor descends smoothly in a longitudinal direction, and to achieve compression of the damping vibration attenuating structure with a minimum degree of tension. The first pulley, the second pulley and the third pulley which are matched with each other can increase the pulling force applying direction of the second inhaul cable, and can be flexibly adjusted and optimized.

To achieve the second object of the present invention, the present technical solution provides a road roller, including: a frame; the cab is arranged on the frame; according to the vibration damping device in any one of the above technical solutions, the vibration damping device is used for damping vibration of a cab.

The road roller in the technical scheme comprises the vibration damping device in any one of the technical schemes, so that all the beneficial effects of any one of the technical schemes are achieved, and the detailed description is omitted.

In order to achieve the third object of the present invention, in one aspect, there is provided a method for controlling a road roller, including the steps of: controlling the first vibration reduction assembly to be switched to a first working state in response to a signal that the road roller enters a vibration starting state and/or a signal that the road roller enters a vibration stopping state; and controlling the first vibration reduction assembly to be switched to the second working state in response to a signal of the road roller ending vibration starting state and/or a signal of the road roller ending vibration stopping state.

The control method of the road roller in the technical scheme adopts the vibration damping device in any technical scheme of the invention, so that the control method has all the beneficial effects of the vibration damping device in any technical scheme of the invention, and the detailed description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a first structural schematic diagram of a vibration damping device in the related art;

fig. 2 is a second structural view of a vibration damping device in the related art;

fig. 3 is a schematic view of a third structure of a vibration damping device in the related art;

fig. 4 is a fourth structural view of a vibration damping device in the related art;

fig. 5 is a fifth structural view of a vibration damping device in the related art;

fig. 6 is a schematic view of a first construction of a soil compactor according to some embodiments of the invention;

FIG. 7 is a first structural schematic of a vibration damping device according to some embodiments of the present invention;

FIG. 8 is a second structural schematic of a vibration damping device according to some embodiments of the present invention;

FIG. 9 is a third structural schematic of a vibration damping device according to some embodiments of the present invention;

FIG. 10 is a fourth structural schematic of a vibration damping device according to some embodiments of the present invention;

FIG. 11 is a schematic structural view of a second support according to some embodiments of the present invention;

FIG. 12 is a schematic view of a first support according to some embodiments of the present invention;

FIG. 13 is a schematic structural view of a slider according to some embodiments of the present invention;

FIG. 14 is a schematic structural view of a first cable of some embodiments of the present invention;

FIG. 15 is a schematic structural view of a power supply assembly according to some embodiments of the present invention;

FIG. 16 is a fifth structural schematic of a vibration damping device according to some embodiments of the present invention;

FIG. 17 is a sixth structural view of a vibration damping device according to some embodiments of the present invention;

FIG. 18 is a schematic view of a first configuration of the sheave of some embodiments of the present invention;

FIG. 19 is a second structural schematic of a sheave according to some embodiments of the present invention;

FIG. 20 is a seventh structural schematic view of a vibration damping device according to some embodiments of the present invention;

fig. 21 is a flow chart of a first step of a method of controlling a vehicle according to some embodiments of the invention;

fig. 22 is a flow chart of a second step of a method of controlling a vehicle according to some embodiments of the invention.

Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:

102': cab, 104': chassis, 106': a gear.

Wherein, the corresponding relationship between the reference numbers and the names of the components in fig. 2 is:

202': provided is a dynamic vibration absorber.

Wherein, the corresponding relationship between the reference numbers and the names of the components in fig. 3 is:

302': cab, 304': chassis, 306': a vibration reduction structure.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 4 is:

402': cab, 404': chassis, 406': a vibration reduction structure.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 5 is:

502': a vibration reduction structure.

Wherein, the correspondence between the reference numbers and the part names in fig. 6 to 20 is:

10: road roller, 100: cab, 102: cab floor, 200: a frame, 300: first vibration damping assembly, 402: first support portion, 404: support shaft, 406: second support portion, 408: first runner, 410: fixed block, 412: second chute, 414: slider, 416: elastic member, 418: first cable, 420: power supply portion, 422: push-pull rod, 424: a connector, 426: bottom plate, 428: first bracket, 430: second bracket, 432: third bracket, 434: umbrella portion, 436: stepped through hole, 438: fixed block through hole, 440: projection, 442: cable housing, 444: first fastener, 446: first cable through hole, 502: second drive assembly, 504: second oneStay, 506: fourth bracket, 508: fifth bracket, 510: first pulley, 512: second pulley, 514: third pulley, 516: pulley, 518: pulley holder, 600: second vibration damping assembly, 602: damping vibration attenuation structure, 604: second fastener, 606: third fastener, 700: roller, D₁: first direction, D₂: second direction, F₁: first direction of tension, F₂: second direction of tension, F₃: third direction of tension, F₄: a fourth tension direction.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A vibration damping device, a roller and a method of controlling a roller according to some embodiments of the invention will now be described with reference to figures 1 to 22.

The road roller is widely applied to various fields such as road paving, municipal construction and building construction. The roller of the road roller can vibrate during working, and the vibration is conducted to a cab through a frame of the road roller, so that adverse effects can be caused on the driving comfort degree and the driving safety of a driver. The vibration problem also makes spare part in the driver's cabin easy to damage, influences the life of road roller, has increased the cost of maintenance of road roller.

In order to avoid the adverse effect of the vibration problem, damping mechanisms are generally adopted in the related art to implement vibration reduction measures. For example, as shown in fig. 1, a mechanical vibration damping structure is provided in the related art. A mechanical vibration damping structure comprising a gear 106 ', a connecting rod, a rack and the like is arranged between the cab 102 ' and the chassis 104 ', the structure converts the vibration capability of the cab 102 ' into electric energy to be stored, the electric energy has an attenuation effect on the vibration capability, but the conversion effect is influenced by the vibration displacement of the cab 102 ', the vibration displacement of medium-high frequency is small, and the connecting rod, the gear 106 ', the rack and the like can not necessarily achieve the purpose of absorbing the vibration energy of the cab 102 '. As shown in fig. 2, a dynamic vibration absorber 202' is provided in the related art. According to the scheme, the dynamic vibration absorber 202 ' is added below the bottom of the cab, and in the working process of the road roller, the dynamic vibration absorber 202 ' and the cab vibrate through coupling, so that the vibration energy of the cab can be absorbed by the dynamic vibration absorber 202 ', and the vibration of the cab is eliminated. However, the disadvantage is that the mass of the road roller cab is large, the energy at resonance is large, the vibration of the cab is damped by the dynamic vibration absorber 202 ', the dynamic vibration absorber 202 ' requires a large spring, damper and mass block, the cost is high, and the installation of the dynamic vibration absorber 202 ' is not easy to realize in the space between the frame and the cab floor. As shown in fig. 3, a vibration damping structure 306 'at a chassis 304' is provided in the related art. This solution arranges a damping structure 306 'in the form of a damping pad in the front-rear direction of the cab 302'. It overcomes the problem of large shaking of the cab 302' during operation and driving of the roller. However, the disadvantage is that it only has a good effect on the shaking and large displacement of the cab 302', but the vibration damping structure 306 of the front and rear direction vibration damping pad does not play a great role in the case of small displacement of vibration. In addition, the damping structure 306' in the form of a damping pad is positioned on different horizontal planes, so that the requirement on installation accuracy is high, and the cost is easy to increase. As shown in fig. 4, the related art provides a damping structure 406 'disposed on the chassis 404', which damps the vibration of the cab 402 'during normal operation by the damping structure 406' in the form of a damping pad, and forms a secondary damping by a spring steel plate or the like, so as to damp the transient resonance region of the roller when the vibration starts and stops. The scheme realizes the conventional vibration reduction and the vibration reduction of the starting vibration and the stopping vibration of the steel wheel of the road roller by using a pure mechanical structure. However, the disadvantage is that the secondary damping reduces the stiffness of the damping structure and the amplitude of the rocking of the cab 402' increases, still adding to the uncomfortable experience. As shown in fig. 5, a vibration damping structure 502' is provided in the related art, which increases the damping of the vibration damping structure and increases the energy absorption effect when the cab resonates or otherwise vibrates by actively changing the damping of the vibration damping structure. In addition, the scheme obtains the vibration signal of the road roller, utilizes the current control device to change the damping of the vibration damper, attenuates the resonance of the cab, effectively attenuates the vibration of the cab, improves the driving comfort of the vibratory road roller and prolongs the service life of the vibratory road roller. But the defect is that the working condition of the road roller is complex, the cab is easy to be impacted greatly, and the reliability is insufficient due to the adoption of the electric control and complex shock absorber. In addition, the electric control and the damper are expensive.

In summary, in the related art, vibration reduction is realized mainly by optimizing the performance of the rubber vibration reduction pad and the vibration absorber, increasing the damping of the vibration reduction pad, reducing the rigidity to absorb the energy of the cab vibration, and the like, and the vibration of the cab is reduced. However, in the related art, only the vibration degree of the cab during resonance can be reduced by optimizing the vibration reduction structure, and the problems of severe vibration and shaking caused by cab resonance cannot be fundamentally solved.

In view of the above, the following embodiments of the present invention provide a vibration damping device and a method for controlling a road roller, so as to improve the safety and driving comfort of the road roller.

Example 1:

as shown in fig. 6, the present embodiment provides a vibration damping device. As shown in fig. 7 and 8, the vibration damping device is disposed between the cab 100 and the frame 200 of the road roller 10, and includes a first vibration damping assembly 300 and a second vibration damping assembly 600. The first end of the first vibration damping module 300 is connected to the frame 200 or the cab 100, or may be connected to the frame 200 or the cab 100 at the same time, so that the frame 200 and the cab 100 can be tensioned to increase the rigidity between the cab 100 and the frame 200. The second vibration damping module 600 includes a damping vibration damping structure 602, and both ends of the damping vibration damping structure 602 are connected to the cab 100 and the frame 200, respectively.

The roller of the present embodiment is used for compacting a construction material for road pavement, and includes a frame 200, a cab 100 disposed above the frame 200, and rollers 700 disposed at a rear end of the cab 100. The roller 700 is used to perform a compacting operation on a road surface, and during the operation of the roller 700, it generates vibration, and the vehicle frame 200 transmits the vibration from the roller 700 to the cab 100, thereby affecting a driver in the cab 100, and adversely affecting the driving comfort and safety of the driver.

The road roller can vibrate in a vibration starting state, a vibration stopping state and a normal working process. The vibration starting state of this embodiment refers to a state in a process of initially starting and starting vibration of the road roller, and the vibration stopping state of this embodiment refers to a state in a process of gradually stopping the road roller after the compaction operation is completed. The road roller of the embodiment enters a normal working state after passing through a vibration starting state, and enters a vibration stopping state after finishing the normal working state until finally stopping.

In order to improve the driving comfort and the driving safety of the driver, the first vibration damping assembly 300 and the second vibration damping assembly 600 are provided for the road roller. The vibration damping device of this embodiment is provided between the cab 100 and the frame 200 of the road roller.

When the first vibration damping assembly 300 tensions the frame 200 and the cab 100, the stability of connection between the cab 100 and the frame 200 can be improved, and the cab 100 and the roller 700 are prevented from resonating, thereby affecting the comfort of the driver and the driving safety.

The second vibration damping arrangement 600 is used to damp the vibration of the cab 100 after the start-up and/or stop state has ended. The second vibration damping assembly 600 includes a damping vibration damping structure 602, and the damping vibration damping structure 602 may be made of rubber-like elastic material, which can disperse and absorb vibration from the roller 700 by damping action, so as to avoid or reduce vibration of the cab 100 after the start-up state and/or the stop state is finished.

The second vibration attenuation module 600 comprises a vibration attenuation structure 602, which attenuates the vibrations of the cab 100 by means of a damping effect. However, when the cab 100 is vibrating or is not vibrating, the second vibration damping assembly 600 including the damping vibration damping structure 602 cannot effectively achieve a vibration damping effect, and also increases the shaking degree of the cab 100, thereby reducing the driving experience of the driver. Therefore, the present embodiment employs the first vibration damping module 300 to prevent the second vibration damping module 600 from performing vibration damping on the cab 100 during vibration starting or vibration stopping, and to allow the second vibration damping module 600 to perform a normal vibration damping function under a normal operating condition after the vibration starting or vibration stopping is finished. Therefore, the embodiment can not only avoid resonance of the cab 100 when vibration starts or stops, but also effectively avoid shaking of the cab 100 caused by damping action when vibration starts or stops, thereby further ensuring the comfort degree and the safety degree of the driver.

It should be noted that, compared to the related art that the cab 100 is damped under the resonance condition by using the low-rigidity and high-damping structure when the road roller starts to vibrate and stops vibrating, the present embodiment implements damping in the start-vibration state and/or the stop-vibration state by the additionally provided first damping assembly 300. Although the damping structure 602 can achieve the damping of the resonance capability of the cab 100, in the process, the suspension structure of the cab 100 becomes less rigid, the vibration amplitude of the cab 100 increases, and the comfort of the cab 100 is still reduced. The damping vibration attenuation structure 602 of the suspension structure is added, so that the defects of high technical difficulty, complex structure, unsuitability for working of a road roller with large working condition impact and high cost exist. In this embodiment, the second vibration damping assembly 600 with the damping vibration damping structure 602 only plays a vibration damping role after the start-up state and/or the stop state is finished, and the first vibration damping assembly 300 is specifically configured for the start-up state and/or the stop state to avoid resonance between the cab 100 and the roller 700. Therefore, this embodiment can effectively improve navigating mate's comfortable degree of driving and driving safety degree, avoids navigating mate's driving fatigue and discomfort, improves the life of road roller, reduces the cost of maintenance of road roller.

Example 2:

as shown in fig. 7 and 8, the present embodiment provides a vibration damping device, and includes the following technical features in addition to the technical features of embodiment 1 described above.

The first vibration damping assembly 300 has a first operating state and a second operating state. In the first operating state, the first vibration damping arrangement 300 is rigidly or elastically connected between the frame 200 and the cab 100 in order to tension the frame 200 and the cab 100. In the second operating state, the second end of first vibration damping module 300 opposite to the first end is disengaged from cab 100 or frame 200 (it can be understood that when the first end of first vibration damping module 300 is located on frame 200, the second end of first vibration damping module 300 is disengaged from cab 100, whereas when the first end of first vibration damping module 300 is located on cab 100, the second end of first vibration damping module 300 is disengaged from frame 200), or first vibration damping module 300 releases the elastic connection between frame 200 and cab 100. The first vibration damping arrangement 300 is switched to a first operating state when the vibration of the road roller 10 is started and/or stopped, and the first vibration damping arrangement 300 is switched to a second operating state when the vibration of the road roller is started and/or stopped.

The rigid connection of this embodiment refers to a non-elastic stable connection between the cab 100 and the frame 200. For example, the present embodiment may employ a support structure to jack the cab 100 up from the frame 200 to prevent the second vibration damping assembly 600 including the damping vibration damping structure 602 from performing a vibration damping function, and thereby achieve a rigid connection between the cab 100 and the frame 200. The support structure of this embodiment may be a hydraulic support structure, a cylinder support structure, or a support mechanism provided with a power device such as a motor.

In this embodiment, the first vibration damping assembly 300 rigidly connects the cab 100 and the frame 200 in a vibration starting state and/or a vibration stopping state of the road roller, so as to realize vibration damping of the cab 100. In the embodiment, the cab 100 and the frame 200 are connected into a whole within a short time in the vibration starting state and/or the vibration stopping state, so that the mode of the cab 100 is changed, the problem of resonance of the cab 100 in the vibration starting state or the vibration stopping state is avoided, and the cab 100 is prevented from vibrating and shaking greatly. After the vibration of the road roller starts or stops, the rigid connection disappears, the second vibration damping assembly 600 plays a vibration damping role, the vibration of the cab 100 is damped under the conventional working condition, and the comfort of the cab 100 is improved.

The first vibration damping arrangement 300 is used to damp the vibration of the cab 100 in a start-up state and/or a stop state by switching states. The first vibration damping module 300 is used because a large exciting force is generated by the steel roller 700 when the road roller is operated, and the exciting force is transmitted to the cab 100 through the frame 200. The cab 100 inevitably has a short resonance interval when the roller starts and stops vibrating, which makes the cab 100 shake and vibrate excessively during the start and stop of vibration of the roller. Therefore, the first vibration damping assembly 300 is adopted in the present embodiment to damp the vibration of the cab 100 in the vibration starting state and/or the vibration stopping state, so as to achieve the purpose of avoiding the resonance between the cab 100 and the roller 700 in the above state. In addition, the first vibration damping module 300 of the present embodiment switches to the second operation state to stop the vibration damping of the cab 100 after the start vibration state and/or the stop vibration state are completed, and in this state, the second vibration damping module 600 damps the vibration of the cab 100 by the damping action.

Example 3:

as shown in fig. 9, the present embodiment provides a vibration damping device, and includes the following technical features in addition to the technical features of any of the above embodiments.

First vibration attenuation module 300 includes one or more support assemblies coupled to frame 200. In the first operating state, the first vibration damping arrangement 300 abuts the cab 100, and in the second operating state, the first vibration damping arrangement 300 is separated from the cab 100.

The support assembly includes a first drive assembly, a first support 402, and a second support 406. The first support portion 402 extends from the surface of the vehicle body frame 200 in the direction of the cab 100, and is provided with a support shaft 404. The second support 406 is movably connected to the first support 402. The first driving assembly drives the second supporting portion 406 to extend relative to the first supporting portion 402, so that the first vibration damping assembly 300 is switched to the first working state, and the first driving assembly drives the second supporting portion 406 to fall back relative to the first supporting portion 402, so that the first vibration damping assembly 300 is switched to the second working state.

The second support portion 406 and the first support portion 402 may be hinged by a pin or slidably connected by a structure such as a first sliding slot 408. The support assembly of the present embodiment is adjacent to the second vibration damping assembly 600 and is engaged with the second vibration damping assembly 600. A cab floor 102 is provided at the bottom of the cab 100. The damping vibration attenuation structure 602 is arranged between the cab floor 102 and the frame 200, one end of the damping vibration attenuation structure 602 is connected with the cab floor 102 through a second fastener 604, and the other end is connected with the frame 200 through a third fastener 606. The second fastener 604 and the third fastener 606 may be screws or rivets, in particular.

For example, the first vibration damping assembly 300 of the present embodiment may include a cylinder and a rod connected to each other, and the cylinder operates and drives the rod to reciprocate up and down along the longitudinal direction. Wherein the strut projects upwards to connect against the cab 100 and thereby bring the first damping assembly 300 into the first operating state. The strut falls back down to be separated from the cab 100, and thereby the first vibration damping assembly 300 is in the second operation state. In the first operating state, the cab 100 and the frame 200 are rigidly connected, so that the second damping arrangement 600 no longer exerts a damping effect. In the second operating condition, the strut is restored, causing the rigid connection to disappear and allowing at least one part of the cab 100 and at least one part of the frame 200 to be elastically connected, namely: the second vibration damping module 600 performs a vibration damping function again.

The first vibration damping assembly 300 is switched between the first working state and the second working state through the structure or state change of the supporting assembly, and the vibration damping assembly is simple in structure, stable in performance and easy to maintain and replace.

The first support 402 and the second support 406 have rod-like or pillar-like structures, respectively. The number of the first support portions 402 is two, and the upper end portion of the second support portion 406 extends between the two first support portions 402 arranged in pair. The second support portion 406 is provided with a first sliding slot 408. A support shaft 404 is provided between the two first support portions 402. The support shaft 404 penetrates the first sliding groove 408 so that the first support portion 402 and the second support portion 406 are connected to each other, and the first support portion 402 is movable up and down along the support shaft 404.

When the first driving assembly drives the second supporting portion 406 to protrude upwards along the supporting shaft 404, the second supporting portion 406 can support and jack up the cab floor 102, and the cab floor 102 and the frame 200 are rigidly connected through the second supporting portion 406, so that the first supporting portion 402 is switched to the first working state. When the first driving assembly stops applying force to the second supporting portion 406, the second supporting portion 406 falls back down along the supporting shaft 404, the second supporting portion 406 is separated from the cab floor 102, and the rigid connection between the cab floor 102 and the frame 200 is lost, so that the first supporting portion 402 is switched to the second working state.

As shown in fig. 11, an umbrella portion 434 is provided at the upper end of the second support portion 406, and at least a part of the umbrella portion 434 has a circular arc-shaped smooth structure. In the first operating state of the first support portion 402, the umbrella portion 434 of the second support portion 406 abuts against the cab floor 102. The umbrella-shaped portion 434 can ensure that the second supporting portion 406 can support and jack up the cab floor 102 when extending out along different angles, thereby improving the stability of the rigid connection between the cab floor 102 and the frame 200, and further improving the driving experience and the driving safety.

The first supporting portion 402 moves up and down along the supporting shaft 404 between the two second supporting portions 406, and is not easy to be dislocated or jammed. Therefore, the first support 402 and the second support 406, which are fitted to each other, can secure a degree of operational stability of the support assembly.

Example 4:

as shown in fig. 9 and 10, the present embodiment provides a vibration damping device, and includes the following technical features in addition to the technical features of any of the above embodiments.

As shown in fig. 13, the first driving assembly includes a fixing block 410, a second sliding groove 412, a sliding block 414, an elastic member 416, a first cable 418, and a power supply assembly. The fixing block 410 is disposed on the frame 200. The second sliding groove 412 is disposed on the fixing block 410. The slider 414 is adapted to slide within the second runner 412. The elastic member 416 is connected to the fixed block 410 and the slider 414, respectively. A first cable 418 is provided at an end of the slider 414 remote from the resilient member 416.

As shown in fig. 14 and 15, the power supply assembly includes a power supply portion 420, a push-pull rod 422, and a connecting member 424. The push-pull rod 422 is connected to the power supply portion 420. The connecting member 424 is disposed at an end of the push-pull rod 422 away from the power supply portion 420, and the first cable 418 is connected to the connecting member 424.

Wherein, the power supply assembly drives the sliding block 414 to move along the second sliding groove 412 to the first direction D by pulling the first pulling cable 418₁Moves to extend the second support part 406 relative to the first support part 402, and the power supply assembly releases the first cable 418 to enable the sliding block 414 to move along the second sliding groove 412 to the second direction D under the pulling force of the elastic member 416₂Move and make the second supporting part 406 fall back relative to the first supporting part 402, the first direction D₁And a second direction D₂Are opposite to each other.

As shown in fig. 12, the fixing block 410 has a rectangular parallelepiped structure, and an upper surface thereof is provided with a second slide groove 412 of a downwardly recessed rectangular structure. Two first supporting portions 402 are provided in pairs on the upper surface of the fixing block 410. The sliding block 414 is adapted to the second sliding groove 412 and adapted to slide reciprocally in the second sliding groove 412. The elastic member 416 of the present embodiment may be a spring, and one end of the spring is connected to the fixed block 410, and the other end of the spring is connected to the sliding block 414.

As shown in fig. 13, two opposite sides of the sliding block 414 are provided with stepped lateral wings, and the stepped lateral wings extend into the second sliding groove 412 to realize the sliding connection between the sliding block 414 and the second sliding groove 412. The upper portion of the slider 414 is provided with a projection 440. A through hole is formed through the protrusion 440. The lower end of the second support part 406 is provided with a stepped through hole 436. The embodiment may use a fastening member such as a pin to sequentially penetrate through the stepped through hole 436 and the protruding portion 440, so as to connect the sliding block 414 with the second supporting portion 406.

As shown in fig. 14, the outer periphery of the first cable 418 is provided with a cable housing 442. One end of the cable housing 442 is connected to the fixing block 410, which protects the first cable 418 and prevents the first cable 418 from breaking or jamming.

As shown in fig. 12, a fixing block through hole 438 is formed on the fixing block 410, and the first pulling cable 418 extends into the second sliding groove 412 through the fixing block through hole 438 and is connected to an end of the sliding block 414 away from the elastic element 416. The power supply assembly is connected to an end of the first cable 418 remote from the slide 414.

In the start-up and/or stop state, the power supply assembly applies a pulling force to the first cable 418, which pulls the first cable 418. The pulled first cable 418 drives the sliding block 414 to move in the first direction D in the second sliding groove 412₁By this, the lower portion of the second support portion 406 approaches the first support portion 402, and the upper portion of the second support portion 406 slides along the support shaft 404 and protrudes upward.

After the start-up and/or stop-oscillation condition is over, the power supply assembly no longer applies tension to the first cable 418, which releases the first cable 418. The first cable 418, which is released, no longer applies force to the slider 414. The sliding block 414 is pulled by the elastic member 416 to the second direction D in the second sliding groove 412₂And (4) moving. Thereby, the lower portion of the second support portion 406 is distanced from the first support portion 402, and the upper portion of the second support portion 406 falls back down along the support shaft 404.

The second sliding slot 412 and the sliding block 414, which are engaged with each other, can make the second supporting portion 406 move stably. The first cable 418 and the power supply assembly can make the second supporting portion 406 stably support the cab floor 102 in the first working state, and the elastic member 416 can ensure that the second supporting portion 406 smoothly falls back in the second working state. Thus, the present embodiment controls the second support part 406 through the fixing block 410, the second sliding groove 412, the sliding block 414, the elastic member 416, the first cable 418 and the power supply assembly. The above components are simple in structure and easy to process and manufacture.

In this embodiment, the power supply 420 may be a cylinder, a hydraulic cylinder, or a motor. A power output rod adapted to extend and retract extends from the power supply portion 420, and the power output rod and the push-pull rod 422 are connected to each other by a first fastener 444. Thus, the power supply part 420 can drive the push-pull rod 422 to extend or contract. A connector 424 is provided at an end of the push-pull rod 422 remote from the power supply 420. The connecting member 424 has a circular plate-shaped structure. A first cable 418 is connected to the link 424. Therefore, when the power supply part 420 retracts the push-pull rod 422, the push-pull rod 422 pulls the first cable 418, so that the upper portion of the second support part 406 slides along the support shaft 404 and extends upward.

The power supply 420 and push-pull rod 422 can pull on the first cable 418 such that the first cable 418 applies a force to the slider 414. The connecting member 424 enables the plurality of first cables 418 to be connected to the push-pull rod 422 at the same time, and effectively prevents the plurality of first cables 418 from being entangled or interfering with each other. Therefore, the embodiment can realize the simultaneous control of the plurality of first cables 418 and the plurality of second supporting parts 406 through one power supply assembly, thereby simplifying the product structure and parts, reducing the production cost and improving the vibration reduction efficiency.

Example 5:

as shown in fig. 15, the present embodiment provides a vibration damping device, and includes the following technical features in addition to the technical features of any of the above embodiments.

The power supply assembly also includes a first bracket assembly including a base plate 426, one or more first brackets 428, one or more second brackets 430, one or more third brackets 432, and a first cable through-hole 446. One or more first brackets 428 are provided on the base plate 426 and support the power supply part 420. One or more second brackets 430 are provided on the bottom plate 426 and support the push-pull rod 422. One or more third brackets 432 are provided on the base plate 426 and have a first cable through hole 446 through which the first cable 418 passes to support the first cable 418.

The base plate 426 has a plate-like structure, and a first leg 428, a second leg 430, and a third leg 432 respectively protrude in a vertical direction from above the base plate 426. The first bracket 428 has two opposing support walls and a support plate disposed between the two support walls, one of which is provided with a protruding wall. The power supply part 420 is provided above the support plate, and the rear end thereof is in abutting contact with the protruding wall. The first bracket 428 may provide effective support fixation for the power supply 420. The two second brackets 430 disposed in pairs have a plate-like structure, respectively, and are provided with through holes adapted to allow the push-pull rod 422 to pass therethrough, so as to provide stable support to the push-pull rod 422. The third bracket 432 also has a plate-like structure. The first cable 418 penetrates the first cable through hole 446 of the third bracket 432 to prevent the plurality of first cables 418 from being entangled with each other.

The first bracket assembly can provide effective support and fixation for the power supply 420, the push-pull rod 422 and the first cable 418 to ensure the stability of the sliding block 414 during sliding.

Example 6:

The first vibration attenuation module 300 includes one or more compression modules. In the first operating condition of the first vibration attenuation module 300, the compression module compresses the damping vibration attenuation structure 602, and in the second operating condition of the first vibration attenuation module 300, the compression module rebounds the damping vibration attenuation structure 602.

The compression assembly includes a second drive assembly 502 and a second cable 504. The second driving assembly 502 is disposed on the frame 200. A second cable 504 is connected to the second drive assembly 502 and the cab 100, respectively. Wherein second drive assembly 502 causes damping structure 602 to compress by pulling on second cable 504 and second drive assembly 502 causes damping structure 602 to rebound by releasing second cable 504.

In other words, the present embodiment provides a rigid connection between the cab 100 and the frame 200 in the vibration starting state and/or the vibration stopping state of the road roller by the compression assembly, and provides an elastic connection between the cab 100 and the frame 200 after the vibration starting state and/or the vibration stopping state are finished.

Specifically, the damping vibration attenuating structure 602 has good elasticity without the intervention of other external forces. The damping structure 602 is elastically lowered and the stiffness thereof is increased when it is compressed. Therefore, in the present embodiment, the compression assembly is controlled to apply an external force to the damping vibration attenuation structure 602 to compress the damping vibration attenuation structure 602 in the vibration starting state and/or the vibration stopping state of the road roller, and the external force applied to the damping vibration attenuation structure 602 by the compression assembly is removed after the vibration starting state and/or the vibration stopping state of the road roller is finished, so that the damping vibration attenuation structure 602 rebounds and resets to exert a vibration attenuation function.

The compression assembly increases the stiffness of the damped vibration attenuating structure 602 by compressing the damped vibration attenuating structure 602 to achieve a rigid connection between the cab 100 and the frame 200. Therefore, the compression assembly can conveniently and flexibly adjust and control the elasticity of the damping vibration attenuation structure 602.

As shown in fig. 16 and 17, in the present embodiment, both ends of the second cable 504 are connected to the second driving assembly 502 and the cab floor 102 of the cab 100, respectively. The second driving assembly 502 may be a driving device such as an air cylinder, a hydraulic oil cylinder, or a motor. When the second driving assembly 502 works, the second pulling cable 504 is pulled, and since the second driving assembly 502 is disposed on the frame 200, the second pulling cable 504 can drive the cab floor 102 connected to the second pulling cable 504 to approach the frame 200 when being pulled, and thereby compression of the damping structure 602 is achieved, otherwise, when the second driving assembly 502 releases the second pulling cable 504, the external force applied to the damping structure 602 is removed, and the damping structure 602 rebounds.

The second driving assembly 502 and the second pulling cable 504 which are matched with each other can compress the damping vibration attenuation structure 602 by applying pulling force, and the structure is stable and convenient to control.

Example 7:

as shown in fig. 17, the present embodiment provides a vibration damping device, and includes the following technical features in addition to the technical features of any of the above embodiments.

The compression assembly further includes a second bracket assembly including one or more fourth brackets 506 and one or more fifth brackets 508. One or more fourth brackets 506 extend from above the frame 200 and support the second drive assembly 502. One or more fifth brackets 508 extend from above the frame 200 and support the second cable 504.

For example, two fourth brackets 506 disposed in pairs are respectively disposed at the front end and the rear end or the left end and the right end of the second driving assembly 502. The fifth bracket 508 is provided with a through hole for the second cable 504 to pass through.

The second bracket assembly is capable of providing stable support to the second drive assembly 502 and the second cable 504 to ensure that the first vibration damping assembly 300 can be stably switched between the first operating state and the second operating state.

Example 8:

as shown in fig. 17 and 18, the present embodiment provides a vibration damping device, and includes the following technical features in addition to the technical features of any of the above embodiments.

The compression assembly further includes a pulley assembly disposed above the cab 100 and/or the frame 200 and adapted to adjust a tension applying direction of the second cable 504.

The pulley assembly includes a first pulley 510, a second pulley 512, and a third pulley 514. The first pulley 510 is disposed on the frame 200. The second pulley 512 is provided above the cab 100. The third pulley 514 is disposed on the frame 200. The second pulley 512 and the third pulley 514 are oppositely arranged, the first pulley 510 is arranged between the second driving assembly 502 and the third pulley 514, and the second cable 504 extends from the second driving assembly 502, sequentially surrounds the first pulley 510, the second pulley 512 and the third pulley 514, and is connected with the cab 100.

The number of pulley assemblies may be one or more and functions to change or adjust the direction of application of the tension of the second cable 504 and to increase the tension applied to the second cable 504 to ensure that the second cable 504 pulls the cab floor 102 in a direction perpendicular with respect to the cab floor 102, thereby ensuring that the cab floor 102 descends smoothly in the longitudinal direction and compression of the damping structure 602 is achieved with a minimum amount of tension.

As shown in fig. 18 and 19, the second cable 504 is wound around a pulley 516. The first pulley 510, the second pulley 512 and the third pulley 514 are identical in structure. As shown in fig. 19, the first pulley 510, the second pulley 512, and the third pulley 514 respectively include a pulley frame 518 and a pulley 516 provided on the pulley frame 518.

As shown in fig. 20, the present embodiment adjusts the direction of the application of the pulling force of the second cable 504 by the first pulley 510, the second pulley 512, and the third pulley 514, which are engaged with each other. The first pulley 510 is disposed on the frame 200 and close to the second driving member 502, and the second cable 504 extending from the second driving member 502 extends through the bottom of the first pulley 510 and extends upward. Further, the second cable 504 is looped around the top of the second pulley 512 andextending downward. Subsequently, the second cable 504 is looped around the bottom of the third pulley 514 and then extended upward again and connected to the cab floor 102 through the bottom of the second pulley 512 above the cab floor 102. In this way, the pulling force application direction of the second cable 504 is changed from the first pulling force direction F₁Into a second direction of tension F₂And from the second tension direction F₂Into a third direction of tension F₃Then from a third pulling force direction F₃Into a fourth direction of tension F₄And ultimately the cab floor 102, to effect compression of the damped vibration attenuating structure 602.

The cooperating first, second and

third pulleys

510, 512 and 514 allow for increased and flexible adjustment and optimization of the direction in which the tension of the second cable 504 is applied.

Example 9:

as shown in fig. 6, the present embodiment provides a road roller 10 comprising a frame 200, a cab 100 and a vibration damping device according to any of the embodiments described above. The cab 100 is provided on the vehicle frame 200. The vibration damping device is used to damp the vibration of the cab 100.

The road roller 10 of this embodiment includes a vibration damping device as described in any of the embodiments above, the cab 100 being provided on the frame 200, the vibration damping device being adapted to damp the cab 100. Therefore, the advantages of any of the above embodiments are not described herein.

Example 10:

as shown in fig. 21, the present embodiment provides a control method of a road roller, which uses the vibration damping device in any of the above embodiments, and includes the following steps:

step S102, responding to a signal that the road roller enters a vibration starting state and/or a signal that the road roller enters a vibration stopping state, and controlling a first vibration reduction assembly to be switched to a first working state;

and step S104, responding to the signal of the road roller ending vibration starting state and/or the signal of the road roller ending vibration stopping state, and controlling the first vibration damping assembly to be switched to a second working state.

The method of controlling a road roller according to this embodiment of the invention employs a vibration damping device according to any of the embodiments of the invention and thus has all the benefits of a vibration damping device according to any of the embodiments of the invention.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The present embodiment provides a vibration damping device.

In some embodiments of this embodiment, the vibration damping device connects the cab 100 and the frame 200 through the rigid support device before the vibration of the roller 700 starts or stops, and the vibration damping device performs a rigid connection function to connect the cab 100 and the frame 200 into a whole in a short time, thereby changing the mode of the cab 100, avoiding the problem of resonance of the cab 100 during the vibration start or stop, and avoiding the large-amplitude vibration and shaking of the cab 100. After the vibration of the road roller is started or stopped, the rigid supporting device is restored to the original state, for example, the second vibration damping assembly 600 of the rubber vibration damping pad plays a vibration damping role, the vibration of the cab 100 is damped under the normal working condition, and the comfort of the cab 100 is improved.

Specifically, the vibration damping device includes four or more second vibration damping modules 600, the four or more second vibration damping modules 600 are installed between the vehicle frame 200 and the cab floor 102, and the cab 100 is fixed to the vehicle frame 200 by bolts. The first vibration damping module 300 is disposed near the second vibration damping module 600, for example, a vibration damping pad, and the first vibration damping module 300 includes a first cable 418, a first support portion 402, a second support portion 406, a slider 414, and a fixing block 410. The first cable 418 is centered on the wire. The outside cable shell 442 that is equipped with of steel wire, first cable 418 can normally be pulled in the shell, and first drive assembly is connected to first cable 418 one end, and the slider 414 is connected to the other end, and the cable shell 442 one end of first cable 418 is fixed in fixed block 410, and first cable 418 passes from the fixed block through-hole 438 of fixed block 410, connects to fix on slider 414. The fixed block 410 is mounted on the frame 200 by bolts or welding, and a second sliding groove 412 for allowing the sliding block 414 to move is formed in the middle of the fixed block 410 near the second vibration damping assembly 600. The sliding block 414 is installed in cooperation with the second sliding groove 412 and can slide in the second sliding groove 412, one end of the sliding block 414 is connected with the fixed block 410 through the elastic element 416, the other end of the sliding block 414 is fixed with the first pulling cable 418, the upper portion of the sliding block 414 is provided with a protruding portion 440, and the protruding portion 440 is provided with a circular hole. The first support portion 402 has two portions, which are symmetrically fixed to the fixing block 410. The first support portion 402 is provided at an upper portion thereof with a circular hole for mounting the support shaft 404. One end of the second support part 406 is fixed on a protruding part 440 on the upper part of the sliding block 414 through a stepped through hole 436, the other end is provided with a circular arc umbrella-shaped part 434, a first sliding groove 408 is formed near the circular arc umbrella-shaped part 434, the first sliding groove 408 is in clearance fit with the support shaft 404, and the support shaft 404 can slide in the first sliding groove 408. The umbrella part 434 is in contact with the cab floor 102, and the arc-shaped umbrella part 434 can be rapidly in contact with and separated from the cab floor 102, thereby reducing friction. The first drive assembly includes a power supply 420, such as a hydraulic cylinder, a first bracket assembly, a push-pull rod 422, and a connector 424. The power supply portion 420 is transversely fixed to the first frame member, the push-pull rod 422 is connected to the power supply portion 420 by bolts, and the push-pull rod 422 is fixed to the base plate 426 by two second frames 430. One end of the push-pull rod 422 is connected to the power supply part 420, and the other end is fixed to a connecting member 424 of a disk structure. The connecting member 424 fixes the first cable 418, and the connecting member 424 is provided with a through hole through which the first cable 418 passes. The cable housing 442 of the first cable 418 is secured to the link 424.

The working process and principle of the damping device are as follows. When the roller 700 of the road roller starts to vibrate and stops vibrating, because the rotating speed of the eccentric wheel is gradually increased or reduced, the excitation frequency of the roller 700 system is close to the modal frequency of the cab 100 at a certain moment, the cab 100 can resonate, larger vibration and shaking amplitude is caused, and the riding comfort of a driver is seriously influenced. Under normal conditions, the sliding block 414 is under the pulling force of the elastic element 416, and the sliding block 414 is close to one end of the fixed block 410. The umbrella portion 434 at the upper end of the second support portion 406 does not contact the cab floor 102, and the damping structure 602 of the second vibration damping module 600 mainly damps the vibration of the cab 100. When the driver operates the road roller to start vibration, the power supply part 420 rapidly stretches the push-pull rod 422 according to the obtained signal, the push-pull rod 422 drives the connecting piece 424 to move, the connecting piece 424 drives the first cable 418 to move, the other end of the first cable 418 drives the sliding block 414 to move, one end of the bottom of the second supporting part 406 connected to the sliding block 414 through the bolt also moves together, and the umbrella part 434 moves and is in rigid contact with the cab bottom plate 102. At this time, the umbrella part 434 is connected with the cab floor 102, the lower end of the second support part 406 is fixed on the slider 414 through a bolt, the slider 414 is further installed on the fixing block 410, and the fixing block 410 is fixed on the vehicle frame 200, so that the cab 100 and the vehicle frame 200 are rigidly connected through the second support part 406 during vibration starting, at this time, the second vibration damping assembly 600 does not play a vibration damping role, the lever-type first vibration damping assembly 300 is arranged near the second vibration damping assembly 600, the stability of the connection between the cab 100 and the vehicle frame 200 can be guaranteed, the modal frequency of the cab 100 is improved, the resonance frequency of the cab 100 supported by the second vibration damping assembly 600 is eliminated, and the purpose of avoiding resonance during vibration starting is achieved. After the vibration starting time, the power supply part 420 reversely pulls and pushes the pull rod 422, the first pulling cable 418 releases the pulling force, the sliding block 414 returns to the original position under the action of the elastic element 416, and the position supported by the middle of the second supporting part 406 is short from the upper end and long from the lower end, so that the umbrella part 434 can be easily and quickly separated from the cab bottom plate 102 under the pulling force of the elastic element 416 after being amplified by a lever, and at the moment, the second vibration attenuation component 600 acts to attenuate the vibration of the cab 100 under the conventional working condition. When the vibration is stopped, the control system obtains signals, and the working process and the principle are the same as those of the vibration starting.

In some embodiments of this embodiment, the damping device tensions the second cable 504 with the second driving assembly 502, such as a hydraulic cylinder, before the roller 700 starts or stops vibrating, and tensions the cab floor 102 with the second cable 504 by amplifying the tension of the second driving assembly 502 via a pulley, thereby compressing the second damping assembly 600, such as a rubber damping pad, and increasing the stiffness of the second damping assembly 600, so that when the cab 100 resonates during the subsequent start or stop vibrating of the roller 700, the greater stiffness of the second damping assembly 600 and the second cable 504 tension the cab 100 and the frame 200, which may reduce the vibration and sway of the cab 100 at the time of resonance. After the vibration starts or stops, the second driving assembly 502 releases the second cable 504, and the second vibration damping assembly 600 returns to the original state to perform the vibration damping function on the cab 100.

Specifically, the vibration damping device includes four or more second vibration damping modules 600, the four or more second vibration damping modules 600 are installed between the vehicle frame 200 and the cab floor 102, and the cab 100 is fixed to the vehicle frame 200 by bolts. The first vibration damping module 300 is arranged adjacent to the second vibration damping module 600, e.g. a vibration damping pad, the first vibration damping module 300 comprising a compression module. The compression assembly includes a first pulley 510, a second pulley 512, and a third pulley 514. The second pulley 512 is fixed to the cab floor 102, and the first pulley 510 and the third pulley 514 are fixed to the vehicle frame 200. The pulleys comprise two supports, a rotating shaft and a pulley arranged on the rotating shaft, the supports are fixed on the frame 200 or the cab bottom plate 102 through bolts, the rotating shaft is fixed on the two supports, and the pulley is fixed on the rotating shaft between the two supports and can rotate around the rotating shaft. A transverse support rod is fixed on the pulley fixed on the cab floor 102 and used for fixing the second cable 504. The second driving assembly 502, for example, a hydraulic cylinder, is disposed on the fourth bracket 506, the fourth bracket 506 is fixed to the frame 200 by a bolt, the extension rod of the second driving assembly 502 is fixedly connected to the second cable 504 by a bolt, and the fifth bracket 508 is disposed at a position close to the second driving assembly 502 for supporting the second cable 504, so as to ensure that the second cable 504 is only subjected to a horizontal force. One end of the second cable 504 is fixed on a transverse rod of a bracket of a second pulley 512 of the cab floor 102, and the second cable downwardly passes through a third pulley 514, then passes through a first pulley 510, passes through a fifth bracket 508 and is fixedly connected with the second driving assembly 502.

The working process and principle of the damping device are as follows. When the roller 700 of the road roller starts to vibrate and stops vibrating, because the rotating speed of the eccentric wheel is gradually increased or reduced, the excitation frequency of the roller 700 is close to the modal frequency of the cab 100 at a certain moment, the cab 100 can resonate, larger vibration and shaking amplitude is caused, and the riding comfort of a driver is seriously influenced. Under normal conditions, the second driving assembly 502 is in an extended state, the second cable 504 is not stressed, when a driver operates the road roller to start vibration, the second driving assembly 502 immediately moves the extension pull rod to the left according to an obtained control signal to drive the second cable 504 to be tensioned to generate a pulling force, when an acting force passes through the first pulley 510 on the frame 200, the pulling forces at two ends of the second cable 504 are equal, when the acting force passes through the second pulley 512 on the cab floor 102, the second cable 504 at two sides generate downward pulling forces, when the acting force passes through the third pulley 514 fixed on the frame 200, the acting force at two sides of the third pulley 514 is an upward pulling force, the second pulley 512 is subjected to three downward pulling forces, the second vibration damping assembly 600 is compressed under the action of the three pulling forces, the rigidity is increased, after the second driving assembly 502 works, the roller 700 is controlled to start vibration, at this time, because the rigidity of the second vibration damping assembly 600 is increased, the frame 200 and the cab bottom plate 102 also generate larger rigidity due to the tensioning of the second cable 504, the vibration and the shaking of the cab 100 are greatly reduced, after the vibration starting time is over, the second driving assembly 502 is controlled to act, the second cable 504 is loosened and is not pulled, and the second vibration damping assembly 600 is restored to the original state and plays a vibration damping effect. The working process in the vibration stopping process is the same as the vibration starting process.

As shown in fig. 22, the present embodiment further provides a method for controlling a road roller, including: and acquiring oscillation starting and oscillation stopping signals, analyzing the signals, outputting hydraulic cylinder control signals, and testing in an early stage to obtain oscillation starting or oscillation stopping time. The vibration starting and stopping control signals are a driver operation signal and a road roller steel wheel vibration hydraulic signal, and whether the road roller is to start vibration and stop vibration is judged through signal analysis according to the two signals. And the control system analyzes the obtained information through the signal, and controls the steel wheel of the road roller to start or stop vibrating after the lever device finishes the action or the steel wire rope is tensioned according to the action time of the hydraulic cylinder and the action time of the vibration damping device. And then after the vibration starting time or the vibration stopping time, the control system outputs a signal to control the hydraulic cylinder to act, so that the vibration damping device is recovered, the vibration damping pad acts, and the vibration of the cab under the conventional working condition is attenuated.

In summary, the embodiment of the invention has the following beneficial effects: the damping device of the embodiment is simple in mounting structure and high in stability. In addition, the vibration damper of the embodiment has a compact structure, and can be improved and installed on the premise of not modifying the structure between the cab and the frame of the existing road roller to a large extent. In addition, under the condition that a sensor is not added, the vibration damping device of the embodiment can perform analysis and output control according to the existing signal, and the cost is low. Finally, the vibration damper of the embodiment can avoid the resonance problem of the cab and improve the driving comfort.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration damping device, arranged between a cab (100) and a frame (200) of a road roller (10), comprising:

a first vibration damping assembly (300), a first end of the first vibration damping assembly (300) being connected with the frame (200) or the cab (100);

the second vibration attenuation assembly (600) comprises a damping vibration attenuation structure (602), and two ends of the damping vibration attenuation structure (602) are respectively connected with the cab (100) and the frame (200);

wherein the first damping assembly (300) is capable of tensioning the frame (200) and the cab (100) to increase the rigidity between the cab (100) and the frame (200);

the first damping assembly (300) has a first operating state and a second operating state;

in the first operating state, the first vibration damping assembly (300) is rigidly or elastically connected between the frame (200) and the cab (100) to tension the frame (200) and the cab (100);

in the second working state, the second end of the first vibration damping assembly (300) is separated from the cab (100) or the frame (200), or the first vibration damping assembly (300) releases the elastic connection between the frame (200) and the cab (100);

the first vibration damping assembly (300) is switched to the first working state in a vibration starting state and/or a vibration stopping state of the road roller (10), and the first vibration damping assembly (300) is switched to the second working state after the vibration starting state and/or the vibration stopping state of the road roller is finished.

2. The vibration damping device according to claim 1, characterized in that the first vibration damping assembly (300) comprises:

one or more support assemblies connected to the frame (200), the support assemblies abutting the cab (100) in the first operating state of the first vibration damping assembly (300), and the support assemblies being separated from the cab (100) in the second operating state of the first vibration damping assembly (300);

the support assembly includes:

a first drive assembly;

a first support section (402) that extends from the surface of the vehicle body frame (200) in the direction of the cab (100) and is provided with a support shaft (404);

a second support (406) movably connected to the first support (402);

the first driving assembly drives the second supporting portion (406) to extend relative to the first supporting portion (402) so that the first vibration damping assembly (300) is switched to the first working state, and the first driving assembly drives the second supporting portion (406) to fall back relative to the first supporting portion (402) so that the first vibration damping assembly (300) is switched to the second working state.

3. The vibration damping device of claim 2, wherein the first drive assembly comprises:

the fixed block (410) is arranged on the frame (200);

the second sliding chute (412) is arranged on the fixed block (410);

a slider (414) adapted to slide within the second runner (412);

the elastic piece (416) is respectively connected with the fixed block (410) and the sliding block (414);

the first pull rope (418) is arranged at one end, far away from the elastic piece (416), of the sliding block (414);

a power supply assembly comprising: the cable pulling device comprises a power supply part (420), a push-pull rod (422) connected with the power supply part (420) and a connecting piece (424) arranged at one end of the push-pull rod (422) far away from the power supply part (420), wherein a first pulling cable (418) is connected with the connecting piece (424);

wherein the power supplyThe assembly drives the sliding block (414) to move along the second sliding groove (412) to the first direction (D) by pulling the first pulling rope (418)₁) Moves so that the second support (406) extends relative to the first support (402), and the power supply assembly causes the slider (414) to move in a second direction (D) along the second runner (412) under the pulling force of the elastic member (416) by releasing the first cable (418)₂) Moves and causes the second support (406) to fall back with respect to the first support (402), the first direction (D)₁) And said second direction (D)₂) Are opposite to each other.

4. The vibration damping apparatus of claim 3 wherein the power supply assembly further comprises a first bracket assembly, the first bracket assembly comprising:

a base plate (426);

one or more first brackets (428) provided on the base plate (426) and supporting the power supply part (420);

one or more second brackets (430) disposed on the bottom plate (426) and supporting the push-pull rod (422);

one or more third brackets (432) are arranged on the bottom plate (426) and provided with a first cable through hole (446) for the first cable (418) to penetrate through so as to support the first cable (418).

5. The vibration damping device according to claim 3, characterized in that the first vibration damping assembly (300) comprises:

one or more compression assemblies, said compression assemblies (300) causing said damped damping structure (602) to compress in said first operating condition, said compression assemblies (300) causing said damped damping structure (602) to rebound in said second operating condition;

the compression assembly includes:

the second driving assembly (502) is arranged on the frame (200);

a second cable (504) connected to the second drive assembly (502) and the cab (100), respectively;

wherein the second drive assembly (502) causes the damped vibration attenuating structure (602) to compress by pulling the second cable (504), and the second drive assembly (502) causes the damped vibration attenuating structure (602) to rebound by releasing the second cable (504).

6. The vibration damping apparatus of claim 5 wherein the compression assembly further comprises a second bracket assembly, the second bracket assembly comprising:

one or more fourth brackets (506) extending from above the frame (200) and supporting the second drive assembly (502);

one or more fifth brackets (508) extending from above the frame (200) and supporting the second cable (504).

7. The vibration damping device of claim 5 wherein the compression assembly further comprises:

the pulley assembly is arranged on the cab (100) and/or the frame (200) and is suitable for adjusting the tension applying direction of the second cable (504);

the sheave assembly includes:

a first pulley (510) disposed on the frame (200);

a second pulley (512) provided above the cab (100);

a third pulley (514) disposed on the frame (200);

the second pulley (512) and the third pulley (514) are arranged oppositely, the first pulley (510) is arranged between the second driving component (502) and the third pulley (514), the second cable (504) extends out of the second driving component (502), and is sequentially wound around the first pulley (510), the second pulley (512) and the third pulley (514) and then is connected with the cab (100).

8. A road roller (10), characterized in that it comprises:

a frame (200);

the cab (100) is arranged on the frame (200);

the vibration damping device according to any of claims 1 to 7 for damping vibrations of the driver's cabin (100).

9. A method of controlling a roller, using a vibration damping arrangement according to any one of claims 1 to 7, the method comprising:

controlling the first vibration reduction assembly to be switched to a first working state in response to a signal that the road roller enters a vibration starting state and/or a signal that the road roller enters a vibration stopping state;

and controlling the first vibration damping assembly to be switched to the second working state in response to a signal of the condition that the vibration of the road roller is finished and/or a signal of the condition that the vibration of the road roller is stopped.