CN216640708U - Shock attenuation booster unit for loader - Google Patents
Shock attenuation booster unit for loader Download PDFInfo
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- CN216640708U CN216640708U CN202123408823.2U CN202123408823U CN216640708U CN 216640708 U CN216640708 U CN 216640708U CN 202123408823 U CN202123408823 U CN 202123408823U CN 216640708 U CN216640708 U CN 216640708U
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Abstract
The utility model discloses a shock absorption power assisting device for a loader, which comprises a working mechanism, a frame, a shock absorption power assisting mechanism and a hydraulic system, wherein the hydraulic system acts to drive the shock absorption power assisting mechanism to operate, so that the lifting, descending, keeping and floating control of the working mechanism are realized; the damping boosting mechanism comprises a movable arm oil cylinder and an elastic piece sleeved outside the movable arm oil cylinder, and when the working mechanism is in a descending state, the elastic piece is converted from a free state to a compressed state to store elastic potential energy; when the working mechanism is in a lifting state, the elastic piece is restored to a free state from a compressed state and releases elastic potential energy to assist the working mechanism in lifting. The device improves the rising and lifting capacity of the working mechanism of the loader through a mechanical structure, and simultaneously reduces the jolt of the whole loader in the transportation process by matching with a hydraulic system, so that the working stability of the whole loader is kept.
Description
Technical Field
The utility model relates to a shock absorption power assisting device for a loader, and belongs to the technical field of loaders.
Background
At present, the measures for increasing the rising force and the lifting capacity of the loader movable arm in the industry are mainly implemented by selecting two modes of large-specification oil cylinders or lifting system working pressure, but the large-specification oil cylinders are high in cost, the lifting working pressure is high in quality requirements on a hydraulic rubber tube and a sealing element, and the oil leakage of the hydraulic system and the failure rate of the hydraulic element are easily increased due to long-time high-pressure working.
With the need of economic development, the working condition of the loader is worse and worse. When the loader transports materials through bumpy road surfaces, the materials are easy to shake. At present, the industry mainly solves the problem by adding a stabilizing module to a hydraulic system, but the method has complex design and high cost.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a damping power assisting device for a loader, which improves the rising and lifting capacity of a working mechanism of the loader through a mechanical structure, and simultaneously reduces the jolt of the whole loader in the transportation process by matching with a hydraulic system, so that the working stability of the whole loader is kept.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
the utility model discloses a damping power-assisted device for a loader, which comprises a working mechanism, a frame, a damping power-assisted mechanism and a hydraulic system,
the end part of the working mechanism is movably connected with the frame; the hydraulic system is connected with the damping and boosting mechanism; one end of the shock absorption assisting mechanism is movably connected with the working mechanism, and the other end of the shock absorption assisting mechanism is connected with the frame; the hydraulic system acts to drive the damping and boosting mechanism to operate, so that the lifting, descending, maintaining and floating control of the working mechanism are realized;
the shock absorption assisting mechanism comprises a movable arm oil cylinder and an elastic part sleeved outside the movable arm oil cylinder, and the elastic part is in a compressed state and a free state; when the working mechanism is in a descending state, the elastic piece is converted into a compression state from a free state to store elastic potential energy; when the working mechanism is in the lifting state, the elastic piece is restored to the free state from the compressed state and releases elastic potential energy to assist the working mechanism to lift.
Further, the movable arm oil cylinder comprises an oil cylinder body and a piston rod, a movable arm oil cylinder small cavity and a movable arm oil cylinder large cavity are arranged in the oil cylinder body, and the movable arm oil cylinder small cavity and the movable arm oil cylinder large cavity are separated by a sealing element arranged at the end part of the piston rod.
Furthermore, a first baffle plate is arranged at the end part, far away from the sealing element, of the piston rod, a second baffle plate is arranged on the outer wall of the cylinder body of the oil cylinder, and the elastic element is installed between the first baffle plate and the second baffle plate.
Furthermore, a moving mechanism is arranged on the outer wall of the oil cylinder body, and the second baffle is installed on the moving mechanism, so that the second baffle can axially move along the oil cylinder body.
Furthermore, hydraulic system includes multiple unit valve, working pump, oil return filter core and hydraulic tank, swing arm hydro-cylinder loculus, swing arm hydro-cylinder main aspects are connected with working pump, hydraulic tank through multiple unit valve and oil return filter core respectively to the oil that advances of swing arm hydro-cylinder is returned in the realization.
Furthermore, the multi-way valve comprises a lifting position, a descending position, a middle position and a floating control position which respectively correspond to the lifting state, the descending state, the holding state and the floating control state of the working mechanism.
Furthermore, a small cavity oil return branch throttle valve is arranged on an oil return branch of the small cavity of the movable arm oil cylinder, a large cavity oil return branch throttle valve is distributed on an oil return branch of the large cavity of the movable arm oil cylinder,
when the multi-way valve is in the floating control position, the small-cavity oil return branch throttling valve and the large-cavity oil return branch throttling valve play a damping role and can control the oil inlet and return speed of the movable arm oil cylinder, so that the vibration amplitude of the working mechanism is controlled.
Further, the elastic member may adopt a multi-spring or a non-linear spring structure.
Compared with the prior art, the utility model has the following beneficial effects:
firstly, under the condition that the working pressure and the specification of the oil cylinder are not changed, the shock absorption power-assisted mechanism improves the rising and lifting capacity of the loader working device on one hand, reduces the stress of the oil cylinder on the other hand, and reduces the failure rate of the oil cylinder, thereby prolonging the service life of the whole loader.
Secondly, when the loader encounters a bumpy road surface in the transportation process, the damping and boosting mechanism is matched with the floating control function of the hydraulic system, so that the stability of the whole loader can be maintained, the shaking amplitude of the loader is reduced, and the function of protecting the loader is realized.
Finally, when the hydraulic system fails or the working mechanism descends rapidly, the function of protecting the whole machine can be realized through the buffering action of the elastic part.
Drawings
FIG. 1 is a schematic view of a low position bucket of a shock absorbing power assist apparatus for a loader;
FIG. 2 is a schematic high-level lift of a shock absorbing power assist apparatus for a loader;
FIG. 3 is a schematic view of a shock absorbing assist mechanism;
FIG. 4 is a control schematic of the hydraulic system;
FIG. 5 is a structural view of a cylinder block;
in the figure: 1. A frame; 2. a working mechanism; 3. a shock-absorbing power-assisted mechanism; 31. A boom cylinder; 311. a cylinder body of the oil cylinder; 312. a piston rod; 313. a movable arm oil cylinder small cavity; 314. a boom cylinder large cavity; 315. a first baffle plate; 316. a second baffle; 317. a moving mechanism; 318. a seal member; 32. An elastic member; 4. A hydraulic system; 41. a multi-way valve; 411. a small cavity oil return branch throttle valve; 412. a large-cavity oil return branch throttle valve; 42. A working pump; 43. An oil return filter element; 44. And a hydraulic oil tank.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Examples
The embodiment provides a shock absorption power assisting device for a loader, which comprises a working mechanism 2, a frame 1, a shock absorption power assisting mechanism 3 and a hydraulic system as shown in figures 1-4,
the end part of the working mechanism 2 is movably connected with the frame 1; the hydraulic system is connected with a damping power-assisted mechanism 3; one end of the shock absorption assisting mechanism 3 is movably connected with the working mechanism 2, and the other end is connected with the frame 1; the hydraulic system acts to drive the damping power-assisted mechanism 3 to operate, so that the lifting, descending, maintaining and floating control of the working mechanism 2 are realized;
as shown in fig. 1-3, the shock-absorbing assisting mechanism 3 includes a boom cylinder 31 and an elastic member 32 sleeved outside the boom cylinder 31, and the elastic member 32 has a compressed state and a free state; when the working mechanism 2 is in a descending state, the elastic member 32 is converted from a free state to a compressed state to store elastic potential energy; when the working mechanism 2 is in the lifting state, the elastic member 32 is restored from the compressed state to the free state and releases elastic potential energy to assist the lifting of the working mechanism 2.
The technical idea of the utility model is that when the working mechanism 2 descends to be at a low position, the elastic part 32 is in a compressed state and stores elastic potential energy; when the working mechanism 2 is lifted from the low position to the high position, the elastic piece 32 is restored from the compressed state to the free state, and the power-assisted working mechanism 2 rises and is lifted. The elastic part 32 is designed to assist the lifting of the working mechanism 2 on one hand and play a role in buffering to protect the whole machine in the process of failure of a hydraulic system or rapid descending of the working mechanism 2 on the other hand. When the whole machine passes through a bumpy road surface, the damping function of the elastic part 32 is exerted, and the floating control of a hydraulic system is matched, so that the stability of the whole machine can be well kept.
As shown in fig. 3, the boom cylinder 31 includes a cylinder body 311 and a piston rod 312, the piston rod 312 is provided with a first barrier 315 at an end portion away from the sealing member 318, a second barrier 316 is provided on an outer wall of the cylinder body 311, and the elastic member 32 is installed between the first barrier 315 and the second barrier 316.
When the working mechanism 2 descends to be at a low position, the elastic member 32 is limited between the first baffle 315 and the second baffle 316 to be at a compressed state, and elastic potential energy is stored; when the working mechanism 2 lifts from the low position to the high position, the elastic piece 32 is restored from the compressed state to the free state, elastic potential energy is released, the first baffle 315 is impacted, and the power-assisted working mechanism 2 rises and lifts.
Specifically, the elastic member 32 may have a multi-spring or non-linear spring structure.
The outer wall of the cylinder body 311 is provided with a moving mechanism 317, and the second baffle 316 is mounted on the moving mechanism 317, so that the second baffle 316 can move axially along the cylinder body 311.
Specifically, as shown in fig. 5, the moving mechanism 317 may be a screw thread, the screw thread is provided on the outer wall of the cylinder body 311, and the second baffle 316 is installed in the screw thread, so that the second baffle 316 can move arbitrarily along the axial direction of the cylinder body 311. The second baffle 316 can also be moved by a cylinder assist or the like.
As shown in fig. 4, a boom cylinder small chamber 313 and a boom cylinder large chamber 314 are provided in the cylinder body 311, and the boom cylinder small chamber 313 and the boom cylinder large chamber 314 are partitioned by a seal 318 provided at an end of the piston rod 312.
The hydraulic system comprises a multi-way valve 41, a working pump 42, an oil return filter element 43 and a hydraulic oil tank 44, wherein the movable arm oil cylinder small cavity 313 and the movable arm oil cylinder large cavity 314 are respectively connected with the working pump 42 and the hydraulic oil tank 44 through the multi-way valve 41 and the oil return filter element 43, so that oil inlet and return of the movable arm oil cylinder 31 are realized.
The multi-way valve 41 includes a lifting position, a lowering position, a neutral position, and a floating control position, which correspond to the lifting state, the lowering state, the holding state, and the floating control state of the working mechanism 2, respectively.
In the working state of the whole machine, the multi-way valve 41 is at a lifting position, a descending position or a middle position, the boom cylinder small cavity 313 and the boom cylinder large cavity 314 are respectively connected with the working pump 42 and the hydraulic oil tank 44 through the multi-way valve 41 and the oil return filter element 43, and the boom cylinder 31 is controlled through the hydraulic system, so that the lifting, the descending and the keeping of the working mechanism 2 are realized.
In the transportation state of the whole machine, the multi-way valve 41 is in a floating control position, wherein a small cavity oil return branch throttle valve 411 is arranged on an oil return branch of the movable arm cylinder small cavity 313, and a large cavity oil return branch throttle valve 412 is arranged on an oil return branch of the movable arm cylinder large cavity 314. Boom cylinder 31 is freely contracted by an external force, and automatic oil supply and return of boom cylinder small chamber 313 and boom cylinder large chamber 314 can be realized by expansion and contraction of boom cylinder 31. At this time, the small-chamber oil return branch throttle valve 411 and the large-chamber oil return branch throttle valve 412 play a damping role, and can control the oil inlet and return speed of the boom cylinder 31, thereby controlling the vibration amplitude of the working mechanism 2, fully exerting the damping effect of the elastic member 32 in the whole machine transportation state, and ensuring the whole machine stability.
In conclusion, the loader working device rises and lifts through the mechanical structure under the condition that the working pressure and the specification of the oil cylinder are not changed, the stress of the oil cylinder is reduced, the failure rate of the oil cylinder is reduced, and the service life of the whole loader is prolonged; secondly, the device can protect the whole machine through the buffer action of the elastic part 32 in the process of failure of the hydraulic system and rapid descending of the working mechanism 2; and finally, when the whole machine passes through bumpy road surfaces, the floating control function of the hydraulic system is matched to play the damping role of the elastic part 32, so that the stability of the whole machine is kept.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A shock absorption booster device for a loader is characterized by comprising a working mechanism (2), a frame (1), a shock absorption booster mechanism (3) and a hydraulic system (4),
the end part of the working mechanism (2) is movably connected with the frame (1); one end of the shock absorption assisting mechanism (3) is movably connected with the working mechanism (2), and the other end of the shock absorption assisting mechanism is connected with the frame (1); the hydraulic system (4) acts to drive the damping and boosting mechanism (3) to operate, so that the lifting, descending, maintaining and floating control of the working mechanism (2) is realized;
the shock absorption assisting mechanism (3) comprises a movable arm oil cylinder (31) and an elastic part (32) sleeved outside the movable arm oil cylinder (31), and the elastic part (32) has a compression state and a free state; when the working mechanism (2) is in a descending state, the elastic piece (32) is converted from a free state to a compressed state to store elastic potential energy; when the working mechanism (2) is in the lifting state, the elastic piece (32) is restored to the free state from the compressed state and releases elastic potential energy to assist the lifting of the working mechanism (2).
2. The shock absorption power assisting device for the loader according to claim 1, wherein the boom cylinder (31) includes a cylinder body (311) and a piston rod (312), a boom cylinder small cavity (313) and a boom cylinder large cavity (314) are provided in the cylinder body (311), and the boom cylinder small cavity (313) and the boom cylinder large cavity (314) are separated by a sealing member (318) provided at an end of the piston rod (312).
3. The shock-absorbing power-assisting device for the loader as claimed in claim 2 wherein the piston rod (312) is provided with a first baffle (315) at an end portion away from the seal (318), the cylinder body (311) is provided with a second baffle (316) on an outer wall thereof, and the resilient member (32) is installed between the first baffle (315) and the second baffle (316).
4. The shock-absorbing power-assisting device for the loader as claimed in claim 3 wherein the outer wall of the cylinder body (311) is provided with a moving mechanism (317), and the second baffle (316) is mounted on the moving mechanism (317) such that the second baffle (316) can move axially along the cylinder body (311).
5. The shock-absorbing power-assisting device for the loader as claimed in claim 2 wherein the hydraulic system (4) comprises a multi-way valve (41), a working pump (42), an oil return filter element (43) and a hydraulic oil tank (44), and the boom cylinder small cavity (313) and the boom cylinder large cavity (314) are respectively connected with the hydraulic oil tank (44) and the working pump (42) through the multi-way valve (41) and the oil return filter element (43) to realize oil inlet and return of the boom cylinder (31).
6. The shock-absorbing power-assisting device for the loader as claimed in claim 5 wherein the multi-way valve (41) includes a lifting position, a lowering position, a neutral position and a floating control position therein, which correspond to the lifting state, the lowering state, the holding state and the floating control state of the operating mechanism (2), respectively.
7. The shock absorption power assisting device for the loader as claimed in claim 6, wherein a small chamber oil return branch throttle valve (411) is arranged on an oil return branch of the movable arm cylinder small chamber (313), and a large chamber oil return branch throttle valve (412) is arranged on an oil return branch of the movable arm cylinder large chamber (314);
when the multi-way valve (41) is located at a floating control position, the small-cavity oil return branch throttle valve (411) and the large-cavity oil return branch throttle valve (412) play a damping role, and can control the oil inlet and return speed of the movable arm oil cylinder (31), so that the vibration amplitude of the working mechanism (2) is controlled.
8. A shock-absorbing power-assisted unit for a loader as claimed in claim 1 wherein said resilient member (32) is of multi-spring or non-linear spring construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123408823.2U CN216640708U (en) | 2021-12-30 | 2021-12-30 | Shock attenuation booster unit for loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123408823.2U CN216640708U (en) | 2021-12-30 | 2021-12-30 | Shock attenuation booster unit for loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216640708U true CN216640708U (en) | 2022-05-31 |
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ID=81725023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123408823.2U Active CN216640708U (en) | 2021-12-30 | 2021-12-30 | Shock attenuation booster unit for loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216640708U (en) |
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2021
- 2021-12-30 CN CN202123408823.2U patent/CN216640708U/en active Active
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