Damping system for electric loader

Abstract

The utility model provides a damping system for an electric loader, and belongs to the technical field of damping of electric loaders. The steering column comprises a steering column body, a rotatable rotating shaft is arranged in the steering column body, and the rotating shaft comprises an upper rotating shaft body and a lower rotating shaft body; and a shock absorber is arranged between the upper rotating shaft and the lower rotating shaft. According to the steering column, the rotating shaft in the steering column is disconnected, the rubber shock absorber is arranged in the middle of the steering column, the interior of the steering column is flexibly connected, rigid impact of the steering column is reduced, meanwhile, the rubber shock absorber can transmit rotating torque and block vibration and noise transmitted by a steering gear on the lower portion, and the comfort of a cab is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock absorption of electric loaders, in particular to a shock absorption system for electric loaders. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Compared to fuel-powered loaders, electric loaders offer significant improvements in quietness and comfort, particularly in the cab, where noise levels are significantly lower. However, the steering system of electric loaders is hydraulic, with the steering wheel transmitting rotation through the steering column to the steering gear for steering. This produces significant hydraulic noise and vibration during steering, which is particularly noticeable on electric loaders. Currently, the internal shaft of the steering column is rigidly connected. Any vibration or noise from the steering gear is transmitted through the shaft to the cab and steering wheel, reducing operator comfort.

[0004] Patent publication number CN 217515216 U discloses a shock-absorbing connection structure for a loader steering wheel. Using a rubber sleeve and rubber shock-absorbing pads, the steering gear and the steering gear fixing plate on the steering gear are isolated from each other. A rubber shock-absorbing pad is placed between the steering gear and the steering gear fixing plate to provide vibration and noise isolation. This prevents steering gear vibration and impact from being transmitted to the steering gear, reducing steering wheel shake or unusual noise. However, the steering gear structure consists of an external fixing bracket, including a steering gear fixing plate at the bottom, and an internal rotatable shaft. The steering wheel is fixed to the top of the shaft. While the aforementioned patent reduces or isolates vibration transmission between the steering gear and the steering gear's external fixing bracket, including the steering gear fixing plate at the bottom, the rotatable valve core of the steering gear is still in rigid contact with the steering gear's shaft. Some vibration and noise can still be transmitted upward along the shaft to the steering wheel, causing vibration and noise to the driver. Furthermore, because the steering wheel and steering gear are connected by a rigid shaft, any rapid start or stop of the steering wheel can be directly transmitted to the steering gear, causing it to open or close suddenly, impacting driving comfort. Utility Model Content

[0005] The purpose of the utility model is to provide a shock absorption system for an electric loader, which realizes a flexible connection inside the steering column, so as to solve the technical problems in the prior art of vibration noise transmitted by the rotating shaft and rigid impact when the steering wheel is turned quickly or stopped quickly, which affects the driving comfort and safety.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a shock absorption system for an electric loader, comprising a steering column, wherein a rotatable rotating shaft is arranged in the steering column, and the rotating shaft comprises an upper rotating shaft and a lower rotating shaft;

[0008] A shock absorber is provided between the upper rotating shaft and the lower rotating shaft.

[0009] Furthermore, the shock absorber is a rounded rectangular structure, and a first fixing hole, a second fixing hole, a third fixing hole and a fourth fixing hole are sequentially provided near the four corners thereof.

[0010] Furthermore, the first fixing hole and the third fixing hole are arranged diagonally, and the first fixing hole and the third fixing hole are respectively provided with a first boss and a third boss on a side facing the upward rotation axis, and are not provided on a side facing the downward rotation axis;

[0011] The second fixing hole and the fourth fixing hole are also arranged diagonally. The second fixing hole and the fourth fixing hole are respectively provided with a second boss and a fourth boss on one side facing the downward rotation axis, and are not provided on the other side facing the upward rotation axis.

[0012] Furthermore, the first boss, the second boss, the third boss and the fourth boss have the same dimensions extending out of the shock absorber.

[0013] Furthermore, the upper rotating shaft is vertically arranged on the first pressing plate, and the upper rotating shaft and the first pressing plate are an integrated structure;

[0014] A first pressing hole and a second pressing hole are respectively provided at both ends of the first pressing plate.

[0015] Furthermore, the lower rotating shaft is vertically arranged on the second pressing plate, and the lower rotating shaft and the second pressing plate are an integrated structure;

[0016] A third pressing hole and a fourth pressing hole are respectively provided at both ends of the second pressing plate.

[0017] Furthermore, a first clamping plate is closely attached to a surface of the shock absorber close to the upper rotating shaft, and a first clamping hole and a second clamping hole are respectively provided at both ends of the first clamping plate;

[0018] A second clamping plate is tightly attached to one side of the shock absorber close to the lower rotating shaft, and a third clamping hole and a fourth clamping hole are respectively provided at both ends of the first clamping plate.

[0019] Furthermore, there are at least four bolts, including a first bolt, a second bolt, a third bolt, and a fourth bolt;

[0020] The first bolt passes through the first pressing hole, the first boss, the first fixing hole and the third clamping hole in sequence and is then tightened with the first nut;

[0021] The second bolt passes through the second clamping hole, the second fixing hole, the second boss and the third pressing hole in sequence and is then tightened with the second bolt;

[0022] The third bolt passes through the second pressing hole, the third boss, the third fixing hole and the fourth clamping hole in sequence and is then tightened with the third nut;

[0023] The fourth bolt passes through the first clamping hole, the fourth fixing hole, the fourth boss and the fourth pressing hole in sequence and is then tightened with the fourth bolt.

[0024] Furthermore, a central through hole is provided at the center of the shock absorber.

[0025] The technical solution of this utility model has the following beneficial effects:

[0026] The utility model disconnects the rotating shaft in the steering column and arranges a rubber shock absorber in the middle, so that the interior of the steering column is flexibly connected, reducing the rigid impact of the steering column. At the same time, the rubber shock absorber can transmit the rotational torque and block the vibration and noise transmitted from the lower steering gear, thereby improving the comfort of the cab.

[0027] The rubber shock absorber of the utility model has elasticity. When the steering wheel is turned quickly or stopped quickly, the elasticity of the rubber shock absorber can reduce the elasticity of the lower transmission shaft similar to damping, thereby reducing the shaking of the whole vehicle and improving the steering performance.

[0028] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0031] Figure 2 It is a structural diagram of the shock absorber of the utility model.

[0032] Figure 3 This is a structural schematic diagram of the first clamping plate of the utility model.

[0033] Figure 4 It is a structural schematic diagram of the upper rotating shaft of the utility model.

[0034] Figure 5 It is a structural schematic diagram of the lower rotating shaft of the utility model.

[0035] Figure 6This is a schematic cross-sectional diagram of the installation of the shock absorber of the utility model.

[0036] Figure 7 It is the front view and oblique view of the steel sleeve of the utility model.

[0037] Markings in the figure: 1. steering wheel, 2. rotating shaft, 201. upper rotating shaft, 202. first clamping plate, 2021. first clamping hole, 2022. second clamping hole, 203. lower rotating shaft, 204. second clamping plate, 2041. third clamping hole, 2042. fourth clamping hole, 205. spline, 3. first clamping plate, 301. first clamping hole, 302. second clamping hole, 4. shock absorber, 40. boss, 401. first boss, 402. second boss, 403. third boss, 404. fourth boss, 4011. first fixing hole, 4022. second fixing hole, 4033. third fixing hole, 4044. fourth fixing hole, 5. second clamping plate, 6. steel sleeve, 7. steering column, 8. bolt, 9. nut, 10. center through hole, 12. steering gear, 13. universal joint. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0040] In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0041] This embodiment discloses a shock absorption system for an electric loader; Figure 1-6 As shown, it includes: a steering column 7, a rotatable rotating shaft 2 is set in the steering column 7, and the rotating shaft includes an upper rotating shaft 201 and a lower rotating shaft 203;

[0042] The top end of the upper rotating shaft 201 is connected to the steering wheel 1, and the bottom end passes through the steering column 7 and is connected to the shock absorber 4;

[0043] The top end of the lower rotating shaft 203 is connected to the reducer 4 , and the bottom end is connected to the steering gear 12 .

[0044] The shock absorber 4 is a rectangle with a certain elasticity, with four corners chamfered and at least four fixing holes provided for fixing to the upper rotating shaft 201 and the lower rotating shaft 203 via bolts 8 .

[0045] A spline 205 is provided at the bottom end of the lower rotating shaft 203 for connecting to the steering gear 12 .

[0046] In some embodiments, as Figure 2 As shown, the shock absorber 4 is provided with a first fixing hole 4011, a second fixing hole 4022, a third fixing hole 4033 and a fourth fixing hole 4044 in sequence near the four corners, and the diameter connection line of any diagonal fixing hole can coincide with the diagonal line of the diagonal. A central through hole 10 is also provided in the center of the shock absorber 4 to provide deformation space when the shock absorber 4 is torsionally deformed.

[0047] In some embodiments, the four corners of the shock absorber 4 are rounded, and the rounded size can be 20 mm in radius. The shock absorber 4 can be 28 mm in height, 64 mm in width, and 64 mm in length. The size and material of the shock absorber 4 can be designed and selected by those skilled in the art according to actual needs and are not subject to further restrictions.

[0048] In some embodiments, the shock absorber 4 may be made of rubber or other materials with certain elasticity and hardness.

[0049] In some embodiments, the shock absorber 4 further includes four bosses 40 . The bosses 40 and the shock absorber 4 are made of the same material and are integrated. Specifically:

[0050] The first fixing hole 4011 and the third fixing hole 4033 of the shock absorber 4 are arranged diagonally. The first and third fixing holes 4011 and 4033 are provided with a first boss 401 and a third boss 403, respectively, on the sides facing the upward rotating shaft 201, while the sides facing the downward rotating shaft 203 are not provided with a first boss 401 and a third boss 403. The second fixing hole 4022 and the fourth fixing hole 4044 of the shock absorber 4 are also arranged diagonally. The second and fourth fixing holes 4022 and 4044 are provided with a second boss 402 and a fourth boss 404, respectively, on the sides facing the downward rotating shaft 203, while the sides facing the upward rotating shaft 201 are not provided with a first boss 401, a second boss 402, a third boss 403, and a fourth boss 404. The first, second, third, and fourth bosses 401, 402, 403, and 404 protrude from the shock absorber 4 to the same extent.

[0051] The function of all bosses is to locally enhance the elasticity of the rubber and provide installation space for the clamping plate. All bosses and shock absorbers 4 are an integral structure made of the same material and are connected with the corresponding fixing holes. The channel formed by the fixing holes and the corresponding bosses can accommodate the steel sleeve 6.

[0052] In some embodiments, as Figure 4As shown, the upper rotating shaft 201 is vertically mounted on the first pressing plate 202. The upper rotating shaft 201 and the first pressing plate 202 are integrally formed. The first pressing plate 202 is a straight-sided elliptical shape, with a first pressing hole 2021 and a second pressing hole 2022 respectively disposed at its ends. The upper rotating shaft 201 is a cylindrical structure, and the middle portion of the first pressing plate 202 is configured to accommodate the cross-section intersecting with the upper rotating shaft 201, forming an arc.

[0053] like Figure 5 As shown, the lower rotating shaft 203 is vertically mounted on the second pressing plate 204. The lower rotating shaft 203 and the second pressing plate 204 are integrally formed. The second pressing plate 204 is a straight-sided elliptical shape, with a third pressing hole 2041 and a fourth pressing hole 2042 respectively disposed at each end of the second pressing plate 204. The lower rotating shaft 203 is a cylindrical structure, and the middle portion of the second pressing plate 204 is configured to accommodate the cross-section intersecting the lower rotating shaft 203 and is configured in an arc shape.

[0054] The utility model has two clamping plates with the same structure, namely the first clamping plate 3 and the second clamping plate 5. The side of the shock absorber 4 close to the upper rotating shaft 201 is closely attached to the first clamping plate 3. Figure 3 As shown, the first clamping plate 3 is provided with a first clamping hole and a second clamping hole at both ends respectively; the side of the shock absorber 4 close to the lower rotating shaft 203 is tightly attached to the second clamping plate 5, and the second clamping plate 5 is exactly the same as the first clamping plate 3, both of which are straight-sided ovals. Specifically, the second clamping plate 5 is provided with a third clamping hole and a fourth clamping hole at both ends respectively.

[0055] like Figure 6 As shown, the shock absorber 4 is fixed to the upper rotating shaft 201 and the lower rotating shaft 203 by the bolts 8 in the following manner:

[0056] There are at least four bolts 8 and nuts 9 adapted to be tightened with the bolts 8 . The bolts 8 include a first bolt, a second bolt, a third bolt, and a fourth bolt.

[0057] The first bolt passes through the first pressing hole 2021, the first boss 401, the first fixing hole 4011 and the third clamping hole in sequence and is then tightened with the first nut;

[0058] The second bolt passes through the second clamping hole 2023, the second fixing hole 4022, the second boss 402 and the third pressing hole 2041 in sequence and is then tightened with the second bolt;

[0059] The third bolt passes through the second pressing hole 2022, the third boss 403, the third fixing hole 4033 and the fourth clamping hole in sequence and is then tightened with the third nut;

[0060] The fourth bolt passes through the first clamping hole, the fourth fixing hole 4044 , the fourth boss 404 and the fourth pressing hole 2042 in sequence and is then tightened with the fourth bolt.

[0061] In some embodiments, a steel sleeve 6 is provided between each fixing hole and the channel formed by the corresponding boss. Its function is to protect the shock absorber 4. When the first and second compression plates 202, 204 are tightened by corresponding bolts, the corresponding steel sleeve 6 supports the first and second compression plates 202, 204, respectively, so that the shock absorber 4 is only slightly compressed. Without the support of the steel sleeve 6, the shock absorber 4 would be severely deformed between the two compression plates, or even crushed and lose its elasticity. It is important to note that the steel sleeve 6 has a certain hardness and is rounded to prevent damage to the shock absorber 4 when it is compressed.

[0062] Each bolt is located in the steel sleeve 6, as shown in FIG. Figure 7 As shown, the steel sleeve 6 is cylindrical, hollow, and has a smooth, threadless inner wall. The threads at the bottom of the bolt 8 engage with the corresponding nut 9 for tightening. The length of the steel sleeve 6 is less than the length of the channel of the shock absorber 4 when unpressurized. The steel sleeve 6 has a through hole to accommodate the bolt.

[0063] The first clamping plate 3, the steel sleeve 6 and the second pressing plate 204 are used to fix the lower rotating shaft 203 and the shock absorber 4 through bolts 8 and nuts 9. The second clamping plate 5, the steel sleeve 6 and the first pressing plate 202 are used to fix the upper rotating shaft 201 and the shock absorber 4 through bolts 8 and nuts 9. Furthermore, the upper rotating shaft 201 and the lower rotating shaft 203 are flexibly connected through the shock absorber 4, and the shock absorption effect is achieved through the elasticity of the shock absorber 4.

[0064] In some embodiments, the central through hole 10 of the shock absorber 4 is spaced uniformly from each fixing hole. A distance sufficient to accommodate the width of the first clamping plate 3 is left between the first and third bosses 401, 403. The heights of the first and third bosses 401, 403 are greater than the height of the first clamping plate 3, while the heights of the second and fourth bosses 402, 404 are greater than the height of the second clamping plate 5. The first and second clamping plates 3, 5 are of the same size and their lengths are both shorter than the length of the shock absorber 4. The first and second compression plates 202, 204 are of the same size and their lengths are also shorter than the length of the shock absorber 4.

[0065] In some embodiments, a universal joint 13 is further provided in the middle of the upper rotating shaft 201, which is a prior art. The outer frame of the steering column at the universal joint 13 can be rotated to adapt to the optimal comfortable angle for the operator. When the outer frame rotates, the two ends of the upper rotating shaft 201 at the universal joint 13 will follow and form a certain angle, and the rotation can be transmitted through the universal joint 13.

[0066] The working principle of this utility model is:

[0067] The present invention separates the rotating shaft within the steering column into an upper rotating shaft and a lower rotating shaft, which are fixedly connected in the middle by a shock absorber. This allows for a flexible connection within the steering column, reducing the rigid impact of the steering column. Simultaneously, the rubber shock absorber can transmit the torque of rotation and block the vibration and noise transmitted from the lower steering gear 12, thereby improving cab comfort. Due to the elasticity of the rubber shock absorber, when the steering wheel is turned quickly or stopped quickly, the elasticity of the rubber shock absorber reduces the elasticity of the lower transmission shaft, similar to damping, thereby reducing the shaking of the entire vehicle and improving steering performance.

[0068] A steel sleeve is installed in the middle of the rubber shock absorber. When the rubber shock absorber is slightly compressed during assembly, the steel sleeve supports the ends, firmly connecting the upper rotating shaft and the first clamping plate, and the lower rotating shaft and the second clamping plate. Without the steel sleeve, the rubber shock absorber will be compressed and deformed by the tightening force of the bolts, which may seriously cause the rubber shock absorber to lose its elasticity or even damage, shortening its lifespan.

[0069] After the first pressing plate and the second pressing plate, the first clamping plate and the second clamping plate are fixed, a 90° intersection will be formed in space. Even if the reducer is damaged, the upper rotating shaft and the lower rotating shaft can still rotate after passing through the steel sleeve baffle, and transmit the rotation of the steering wheel to the steering gear, so that the vehicle can be steered without the risk of loss of control, thereby improving safety.

[0070] It should also be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprises," or any other variations thereof are intended to cover non-exclusive inclusion.

[0071] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A shock absorption system for an electric loader, characterized in that: The steering column comprises a steering column, wherein a rotatable rotation shaft is provided in the steering column, and the rotation shaft comprises an upper rotation shaft and a lower rotation shaft; A shock absorber is provided between the upper rotating shaft and the lower rotating shaft; The shock absorber is a rounded rectangular structure, and a first fixing hole, a second fixing hole, a third fixing hole and a fourth fixing hole are sequentially arranged near the four corners of the shock absorber.

2. A shock absorption system for an electric loader according to claim 1, characterized in that: The first fixing hole and the third fixing hole are arranged diagonally, and the first fixing hole and the third fixing hole are respectively provided with a first boss and a third boss on the side facing the upward rotating shaft, and are not provided with a first boss and a third boss on the side facing the downward rotating shaft; The second fixing hole and the fourth fixing hole are also arranged diagonally. The second fixing hole and the fourth fixing hole are respectively provided with a second boss and a fourth boss on one side facing the downward rotation axis, and are not provided on the other side facing the upward rotation axis.

3. A shock absorption system for an electric loader according to claim 2, characterized in that: The first boss, the second boss, the third boss and the fourth boss have the same dimensions extending out of the shock absorber.

4. A shock absorption system for an electric loader according to claim 1, characterized in that: The upper rotating shaft is vertically arranged on the first pressing plate, and the upper rotating shaft and the first pressing plate are an integrated structure; A first pressing hole and a second pressing hole are respectively provided at both ends of the first pressing plate.

5. The shock absorption system for an electric loader according to claim 1, wherein: The lower rotating shaft is vertically arranged on the second pressing plate, and the lower rotating shaft and the second pressing plate are an integrated structure; A third pressing hole and a fourth pressing hole are respectively provided at both ends of the second pressing plate.

6. A shock absorption system for an electric loader according to claim 5, characterized in that: A first clamping plate is provided on one side of the shock absorber close to the upper rotating shaft, and a first clamping hole and a second clamping hole are provided at both ends of the first clamping plate respectively; A second clamping plate is tightly attached to one side of the shock absorber close to the lower rotating shaft, and a third clamping hole and a fourth clamping hole are respectively provided at both ends of the first clamping plate.

7. A shock absorption system for an electric loader according to claim 6, characterized in that: The four fixing holes are fixed to the upper rotating shaft and the lower rotating shaft by bolts; There are at least four bolts, including a first bolt, a second bolt, a third bolt, and a fourth bolt; The first bolt passes through the first pressing hole, the first boss, the first fixing hole and the third clamping hole in sequence and is then tightened with the first nut; The second bolt passes through the second clamping hole, the second fixing hole, the second boss and the third pressing hole in sequence and is then tightened with the second bolt; The third bolt passes through the second pressing hole, the third boss, the third fixing hole and the fourth clamping hole in sequence and is then tightened with the third nut; The fourth bolt passes through the first clamping hole, the fourth fixing hole, the fourth boss and the fourth pressing hole in sequence and is then tightened with the fourth bolt.

8. The shock absorption system for an electric loader according to claim 1, wherein: A central through hole is also provided at the center of the shock absorber.

9. An electric loader, characterized in that: A shock absorption system for an electric loader as described in any one of claims 1 to 8 is used.

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