Vibration reduction structure of anti-rolling frame

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a damping structure of an anti-rolling frame, which has the technical scheme that the damping structure of the anti-rolling frame comprises a frame main body, the anti-rolling frame, a damper and a fastening component, a mounting hole is formed in the anti-rolling frame in a penetrating manner, the damper is arranged in the mounting hole in a penetrating manner, and the fastening component is respectively connected with the damper and the frame main body. Vibration generated in the working process of the anti-rolling frame can be reduced through the shock absorbers, so that the comfort of workers is improved, and the reliability requirement of the anti-rolling frame is improved. When the shock absorber needs to be mounted, only the shock absorber needs to be placed in the mounting hole, then the shock absorber, the anti-rolling frame and the frame body are fixedly connected through the fastening assembly, the dismounting mode and the mounting mode are opposite, and the shock absorber mounting structure has the advantage of being simple in dismounting mode.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a vibration reduction structure of an anti-rollover frame. Background Art

[0002] The roll cage is a protective device installed on engineering vehicles, and its main function is to protect the driver. However, the vibration generated by the engineering vehicle during operation is relatively large, and a vibration reduction device is usually installed on the roll cage to improve the operator's comfort, reduce the reliability problems caused by the vibration of the structure, and extend the service life.

[0003] However, the common vibration damping devices have a complex installation structure and are inconvenient to disassemble and assemble. For example, in the related art, the utility model patent with application number CN201220141755X discloses a bulldozer anti-roll cage vibration damping device, including an upper rubber buffer pad, a seat, a ring, a lower rubber buffer pad, a column block, a connecting base and a cover plate. The upper rubber buffer pad, the lower rubber buffer pad and the seat are matched with each other respectively. The upper rubber buffer pad is covered with a cover plate, which is tightened by bolts. The bottom of the lower rubber buffer pad is padded with a column block. The seat is connected to the ring by a thread, and the ring is installed on the connecting base. The device can not only play a buffering function during the rollover process, but also reduce vibrations in all directions. However, when this structure is dismantled or installed, it is necessary to first remove the cover plate, and then disassemble and assemble the bolts and rubber anti-collision pad, and the disassembly and assembly process is cumbersome.

[0004] Therefore, there is an urgent need for a vibration reduction structure with a simple disassembly and assembly method. Utility Model Content

[0005] The utility model aims to provide a vibration reduction structure for an anti-rollover frame, which has the advantage of simple assembly and disassembly while meeting the vibration reduction requirements.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is specifically: a roll-over cage vibration reduction structure, including a frame body, a roll-over cage, a shock absorber and a fastening assembly, the roll-over cage is penetrated by a mounting hole, the shock absorber is inserted into the mounting hole, and the fastening assembly is respectively connected to the shock absorber and the frame body.

[0007] In actual use, the utility model can reduce the vibration generated by the anti-rollover cage during operation, thereby improving the comfort of the staff and the reliability requirements of the anti-rollover cage. When the shock absorber needs to be installed, it only needs to be placed in the installation hole, and then the shock absorber, the anti-rollover cage and the frame body are fixedly connected by the fastening assembly. The removal method is opposite to the installation method, and the disassembly and assembly method is simple.

[0008] Furthermore, the shock absorber includes a sleeve, a vibration-damping rubber body and a support shaft, the vibration-damping rubber body is sleeved and fixed on the support shaft, the sleeve is sleeved and fixed on the vibration-damping rubber body, the sleeve is inserted into the mounting hole, and the fastening assembly is respectively connected to the frame body and the support shaft.

[0009] Furthermore, the sleeve and the mounting hole are interference fit.

[0010] Furthermore, a limiting step is formed at one end of the sleeve, and the limiting step abuts against the anti-rollover cage.

[0011] Furthermore, the fastening assembly includes a washer and a fastening bolt, a threaded hole is opened at one end of the support shaft close to the frame body, the fastening bolt is respectively connected to the frame body and the threaded hole, the washer is sleeved on the fastening bolt, and the two ends of the washer are respectively abutted against the screw head of the fastening bolt and the frame body.

[0012] Furthermore, a protective step is formed at one end of the support shaft away from the frame body, and the protective step and the vibration-damping rubber body are spaced apart.

[0013] Furthermore, a plurality of shock absorbers are arranged on the anti-rollover cage.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. When installing the shock absorber, the utility model only needs to place the shock absorber in the installation hole, and then the shock absorber, the anti-roll cage and the frame body are fixedly connected by the fastening assembly. The removal method is opposite to the installation method. While meeting the vibration reduction requirements, it has the advantage of simple disassembly and assembly.

[0016] 2. The shock absorber of the utility model includes a sleeve, a vibration-damping rubber body and a support shaft. The vibration-damping rubber body is sleeved and fixed on the support shaft, the sleeve is sleeved and fixed on the vibration-damping rubber body, the sleeve is inserted into the mounting hole, and the fastening assembly is connected to the frame body and the support shaft respectively. When the frame body vibrates, it is transmitted to the support shaft through the fastening assembly, and the vibration-damping rubber body absorbs part of the vibration, thereby playing a vibration-damping role. The weakened vibration is transmitted to the anti-rollover cage through the sleeve. Since the frame body does not directly contact the anti-rollover cage, but is indirectly connected through the shock absorber, it has the advantage of significant vibration-damping effect.

[0017] 3. The sleeve and the mounting hole of the shock absorber of the utility model are interference fit, thereby ensuring the stability of the connection between the shock absorber and the anti-rollover cage, and the limiting step at the end of the sleeve abuts against the anti-rollover cage, which has a positioning effect on the installation of the shock absorber on the anti-rollover cage.

[0018] 4. The utility model forms a protective step at one end of the support shaft away from the frame body, and the protective step and the vibration-damping rubber body are arranged at intervals. Through this arrangement, when the anti-rollover cage shakes as a whole, the reserved gap between the protective step and the vibration-damping rubber body can be used as a reserved margin to prevent the protective step from colliding when the anti-rollover cage shakes. When the vibration-damping rubber body fails due to overload, the protective step will be stuck on the end surface of the sleeve and the anti-rollover cage, so that the shock absorber will not be separated from the anti-rollover cage, thus playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a schematic diagram of a roll cage vibration reduction structure according to an embodiment of the utility model.

[0021] Figure 2 It is an exploded schematic diagram of a roll cage vibration reduction structure according to an embodiment of the utility model.

[0022] Figure 3 It is a cross-sectional view of a roll cage vibration reduction structure according to an embodiment of the utility model.

[0023] Among them, the figure markings are: 1. frame body; 2. anti-roll cage; 3. shock absorber; 31. sleeve; 32. vibration-damping rubber body; 33. support shaft; 4. fastening assembly; 41. washer; 42. fastening bolt; 5. mounting hole; 6. limiting step; 7. threaded hole; 8. protective step. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] Reference Figures 1 to 3 A roll cage vibration reduction structure includes a vehicle frame body 1, a roll cage 2, a shock absorber 3 and a fastening assembly 4. The roll cage 2 is provided with a mounting hole 5, the shock absorber 3 is inserted into the mounting hole 5, and the fastening assembly 4 is respectively connected to the shock absorber 3 and the vehicle frame body 1. It should be noted that a plurality of shock absorbers 3 are installed at the connection between the vehicle frame body 1 and the roll cage 2, and the plurality of shock absorbers 3 are installed in the same manner, and the plurality of shock absorbers 3 can cooperate with each other to improve the overall vibration reduction effect.

[0026] The shock absorber 3 includes a sleeve 31, a vibration-damping rubber body 32 and a support shaft 33. The vibration-damping rubber body 32 is sleeved and fixed on the support shaft 33, the sleeve 31 is sleeved and fixed on the vibration-damping rubber body 32, and the sleeve 31 is inserted into the mounting hole 5. Specifically, in this embodiment, the sleeve 31 and the support shaft 33 are made of steel to ensure that the shock absorber 3 as a whole has sufficient structural strength. The vibration-damping rubber body 32 is fixed by an adhesive, the support shaft 33 and the sleeve 31. The sleeve 31 and the mounting hole 5 are interference-fitted, and the connection stability between the shock absorber 3 and the roll cage 2 is improved in this way. A limiting step 6 is formed at one end of the sliding sleeve away from the frame body 1, and the limiting step 6 abuts against the end surface of the roll cage 2, which has a positioning effect on the installation of the shock absorber 3 on the roll cage 2.

[0027] The fastening assembly 4 includes a washer 41 and a fastening bolt 42. A threaded hole 7 is provided at one end of the support shaft 33 close to the frame body 1. The fastening bolt 42 is connected to the frame body 1 and the threaded hole 7 respectively. The washer 41 is sleeved on the fastening bolt 42. The washer 41 is located on the side of the frame body 1 away from the anti-rollover cage 2. The two ends of the washer 41 are respectively in contact with the screw head of the fastening bolt 42 and the frame body 1. The connection between the frame body 1 and the shock absorber 3 is achieved through the fastening bolt 42. It should be noted that the frame body 1 is not in direct contact with the anti-rollover cage 2, but is indirectly connected through the shock absorber 3. When the frame body 1 vibrates, it is transmitted to the support shaft 33 through the fastening assembly 4. The vibration-damping rubber body 32 absorbs part of the vibration, thereby playing a role in vibration reduction. The weakened vibration is transmitted to the anti-rollover cage 2 through the sheath 31. This method has a significant vibration reduction effect.

[0028] When the shock absorber 3 needs to be installed, it only needs to be placed in the mounting hole 5, and then the shock absorber 3, the frame body 1, and the anti-roll cage 2 are connected by tightening the bolts 42. The removal method of the shock absorber 3 is opposite to the installation steps of the shock absorber 3. This structure has the advantage of simple disassembly and assembly while meeting the vibration reduction requirements.

[0029] It should also be added that a protective step 8 is formed at one end of the support shaft 33 away from the vehicle frame body 1, and the protective step 8 and the vibration-damping rubber body 32 are arranged at intervals. With this arrangement, when the roll cage 2 shakes as a whole, the reserved gap between the protective step 8 and the vibration-damping rubber body 32 can be used as a reserved margin to prevent the protective step 8 from colliding when the roll cage 2 shakes. When the vibration-damping rubber body 32 fails due to overload, the protective step 8 will be stuck on the end surface of the sleeve 31 and the roll cage 2, so that the shock absorber 3 will not be separated from the roll cage 2, thereby playing a protective role.

[0030] The implementation principle of a roll cage vibration reduction structure of an embodiment of the present invention is as follows: when the frame body 1 generates vibration, it is transmitted to the support shaft 33 through the fastening assembly 4, and the vibration-damping rubber body 32 absorbs part of the vibration, thereby playing a role in vibration reduction. The weakened vibration is transmitted to the roll cage 2 through the sheath 31. This method has a significant vibration reduction effect. In addition, when it is necessary to install the shock absorber 3, it is only necessary to place the shock absorber 3 in the mounting hole 5, and then the connection between the shock absorber 3, the frame body 1, and the roll cage 2 is achieved by fastening the bolts 42. The removal method of the shock absorber 3 is opposite to the installation steps of the shock absorber 3. This structure has the advantage of simple disassembly and assembly while meeting the vibration reduction requirements.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roll cage vibration reduction structure, characterized in that: The vehicle comprises a frame body (1), an anti-rollover cage (2), a shock absorber (3) and a fastening assembly (4); the anti-rollover cage (2) is provided with a mounting hole (5), the shock absorber (3) is inserted into the mounting hole (5), and the fastening assembly (4) is respectively connected to the shock absorber (3) and the frame body (1); The shock absorber (3) comprises a sleeve (31), a vibration-damping rubber body (32) and a support shaft (33); the vibration-damping rubber body (32) is sleeved and fixed on the support shaft (33); the sleeve (31) is sleeved and fixed on the vibration-damping rubber body (32); the sleeve (31) is inserted into the mounting hole (5); and the fastening assembly (4) is respectively connected to the frame body (1) and the support shaft (33).

2. The anti-rollover cage vibration reduction structure according to claim 1, characterized in that: The sleeve (31) and the mounting hole (5) are interference fit.

3. The anti-rollover cage vibration reduction structure according to claim 1, characterized in that: A limiting step (6) is formed at one end of the protective sleeve (31), and the limiting step (6) abuts against the anti-rollover cage (2).

4. The anti-rollover cage vibration reduction structure according to claim 1, characterized in that: The fastening assembly (4) comprises a washer (41) and a fastening bolt (42); a threaded hole (7) is provided at one end of the support shaft (33) close to the frame body (1); the fastening bolt (42) is respectively connected to the frame body (1) and the threaded hole (7); the washer (41) is sleeved on the fastening bolt (42); and the two ends of the washer (41) are respectively in contact with the screw head of the fastening bolt (42) and the frame body (1).

5. The anti-rollover cage vibration reduction structure according to claim 1, characterized in that: A protective step (8) is formed at one end of the support shaft (33) away from the frame body (1), and the protective step (8) and the vibration-damping rubber body (32) are arranged at intervals.

6. The anti-rollover cage vibration reduction structure according to claim 1, characterized in that: A plurality of shock absorbers (3) are arranged on the anti-rollover cage (2).

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