An industrial caster structure with buffering and shock absorption

Abstract

The present invention discloses an industrial caster structure with buffering and shock absorption, aiming to provide an industrial caster structure with good stability, buffering and shock absorption. It includes a mounting plate, a first buffering component, a caster main body, a caster housing, a wheel axle, a wheel and a second buffering component. The mounting plate is placed on the upper end surface of the first buffering component and fixedly connected to the upper end surface of the first buffering component. The caster main body is placed on the lower end surface of the first buffering component and fixedly connected to the lower end surface of the first buffering component. The caster housing is placed on the front and back sides of the caster main body and is threadedly connected to the caster main body. The wheel is rotationally connected to the caster main body through the wheel axle. The second buffering component is placed between the caster main body and the caster housing, is connected to the caster main body and the caster housing, is placed above both ends of the wheel axle, and is in contact connection with the upper parts of both ends of the wheel axle. The beneficial effect of the present invention is: good stability, buffering and shock absorption.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial casters, and particularly to an industrial caster structure with buffering and shock absorption. Background Art

[0002] Industrial casters are a type of caster. The emergence of industrial casters has brought an epoch-making revolution to people's handling, especially when moving objects. They can not only be easily carried, but also move in any direction, greatly improving efficiency. However, as the application range of industrial casters becomes wider and wider, the requirements for industrial casters are also getting higher and higher. When handling goods, at the moment of putting down the goods, the casters have to bear a huge force caused by the inertia of the goods. This causes the casters to often bear excessive force, which will reduce the service life of industrial casters and also pose potential safety hazards.

[0003] A silent industrial caster disclosed in Chinese Patent Publication No. CN113370713A, with the authorization announcement date of September 10, 2021, includes: a support with a rotatable support wheel; a connecting seat for connecting with a vehicle body; a link mechanism, which includes at least two first links, an air shock absorber, and a trigger mechanism. The number of the first links is at least two, and at least two first links are parallel to each other. One end of each first link is hinged to the connecting seat, and the other end is hinged to the support. The support, the connecting seat, and at least two first links form a parallelogram mechanism. The first end of the air shock absorber is hinged to one of the support and the connecting seat, the trigger mechanism is hinged to the other of the support and the connecting seat, the second end of the air shock absorber is hinged to the trigger mechanism, and the trigger mechanism is hinged to at least one of the at least two first links. The disadvantage of this invention is that insufficient attention is paid to the buffering and shock absorption part.

[0004] A shock-absorbing industrial caster disclosed in Chinese Patent Publication No. CN113199907A, with the authorization announcement date of August 3, 2021, includes a universal caster and a height-adjusting housing; the universal caster includes a shock-absorbing assembly, a wheel frame, and a caster body installed on the wheel frame; the shock-absorbing assembly includes an upper top plate, a lower top plate, and an elastic member connecting between the upper top plate and the lower top plate; the top of the wheel frame is connected to the bottom surface of the lower top plate through a bearing; both the upper top plate and the lower top plate are telescopic top plates; the top of the height-adjusting housing is connected to the equipment, and height-adjusting grooves and shock-absorption coefficient adjusting grooves are provided on the side wall of the height-adjusting housing; the universal caster is installed in the height-adjusting housing. By controlling the elongation of the upper top plate and making the elongated part of the upper top plate engage with height-adjusting grooves at different heights, the height of the wheel frame extending out of the height-adjusting housing can be controlled, thereby realizing the switching between the function of restricting the rotation of the wheel frame by the height-adjusting housing and the function of non-interference with rotation; in addition, by adjusting the distance between the upper top plate and the lower top plate, the shock-absorption coefficient of the elastic member can be adjusted. The disadvantage of this invention is that the shock-absorption design is relatively simple, reducing the stability of the industrial caster. Summary of the Invention

[0005] The present invention aims to overcome the deficiencies of insufficient stability and poor buffering and shock absorption in the prior art, and provides a buffering and shock-absorbing industrial caster structure with good stability and buffering and shock absorption.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A buffering and shock-absorbing industrial caster structure includes a mounting plate, a first buffering component, a caster body, a caster housing, a wheel axle, a wheel and a second buffering component. The first buffering component includes an upper rod, a lower rod, a first screw, a nut and a buffering and shock-absorbing member. The upper end face of the upper rod is fixedly connected to the lower end face of the mounting plate. The buffering and shock-absorbing member is placed inside the lower rod. The buffering and shock-absorbing member includes a first permanent magnet block, a second permanent magnet block and a first buffering spring. The lower end of the upper rod is threadedly connected to the first permanent magnet block through the first screw. The second permanent magnet block is placed on the inner bottom of the lower rod and is fixedly connected to the lower rod. The first buffering spring is placed between the first permanent magnet block and the second permanent magnet block. The upper end face of the first buffering spring is in contact connection with the lower end face of the first permanent magnet block, and the lower end face of the first buffering spring is in contact connection with the upper end face of the second permanent magnet block. The positions of the first permanent magnet block and the second permanent magnet block correspond to each other. The lower end of the lower rod is connected to the upper end face of the caster body through the first screw and the nut. The caster body is provided with side plates. The outer side face of the side plates is threadedly connected to the inner side face of the caster housing. The wheel is placed between the two side plates and is rotatably connected to the two side plates through the wheel axle. The wheel is rotationally connected to the caster body through the wheel axle. The side plates are provided with a first square groove, and the first square groove is placed on the outer side of the side plates. The caster housing is provided with a second square groove, and the second square groove is placed on the inner side of the caster housing. The position of the second square groove corresponds to the position of the first square groove. The second buffering component includes a second buffering spring and a sliding block. The second buffering spring is placed on the upper end face of the sliding block and is fixedly connected to the upper end face of the sliding block. The sliding block is placed between the first square groove and the second square groove and is slidably connected to the side plates and the caster housing through the first square groove and the second square groove. The wheel axle is placed on the lower end face of the sliding block, and the lower end face of the sliding block is in contact connection with the wheel axle.

[0008] During installation, the mounting plate can be installed on the required load-bearing plate with a mounting part, which is convenient and fast. When loading goods, due to inertia, the goods transmit a huge force to each industrial caster. The first buffering component bears the pressure and moves downward to achieve the effect of the first buffering. Then the force is transmitted to the caster body, and the caster body moves downward, causing the wheel axle to drive the wheel to press the second buffering component upward, achieving the second buffering effect, and the buffering direction is opposite to the first buffering direction. In this way, the vibration can be reduced, and good load-bearing capacity can be achieved, so that the actual force on the caster is reduced a lot, and the goods will not be damaged due to the lack of buffering of the caster, achieving the purpose of good stability and buffering and shock absorption.

[0009] Preferably, a first hole is provided on the mounting plate, and a plurality of first holes are disposed at each end of the mounting plate. The first holes on the mounting plate can better install the load-bearing plate, so that the force of the load-bearing plate can be evenly applied to the entire caster.

[0010] Preferably, a lower rod cover is provided at the upper end of the lower rod. The lower rod cover is connected to the lower rod. A second hole is provided on the lower rod cover. The first permanent magnet block is threadedly connected to the lower end of the upper rod through the second hole by a first screw. It is convenient for installation.

[0011] Preferably, a third hole is provided on the first permanent magnet block. The first permanent magnet block is threadedly connected to the lower end of the upper rod through the second hole and the third hole by a first screw. It is convenient for installation.

[0012] Preferably, a baffle and an upper plate are provided on the caster body. The upper plate is disposed on the upper end surface between the two side plates. The upper plate and the side plates are integrally formed. The baffle is disposed on the left and right sides between the two side plates. The front and rear ends of the baffle are fixedly connected to the side plates. The upper end surface of the baffle is fixedly connected to the lower end surface of the upper plate. The lower end surface of the lower rod is threadedly connected to the upper end surface of the upper plate and a nut by a first screw. The setting of the baffle not only increases the strength of the caster body, can shock-absorb, but also can block part of the dirt and prevent the wheel from turning into garbage.

[0013] Preferably, a first square hole, a fourth hole, a first groove and a fifth hole are provided on the side plate. The first square hole is placed in the exact middle of the square groove. The fourth hole is placed on the lower end surfaces of the square groove and the first square hole. The fourth hole communicates with the first square hole. The first groove is semi-circular. The first groove is placed on the upper end surface of the square groove. A plurality of fifth holes are evenly arranged around the square groove. The upper end of the second buffer assembly is placed in the first groove. The caster housing is threadedly connected to the side plate through the fifth hole. The wheel axle is connected to the side plate through the fourth hole. The first square hole and the first groove on the side plate can limit the second buffer assembly and play a buffering role.

[0014] Preferably, the caster housing is provided with a second square hole, a sixth hole, a second groove, a seventh hole and a second screw. The second square hole is located exactly in the middle of the second square groove. The position of the second square hole corresponds to the position of the first square hole. The sixth hole is located on the lower end surface of the second square groove and the second square hole, and the sixth hole communicates with the second square hole. The position of the sixth hole corresponds to the position of the fourth hole. A plurality of seventh holes are evenly arranged around the second square groove. The second buffer assembly is placed in the second square groove. The second groove is semi-circular and is located on the upper end surface of the second square groove. The position of the second groove corresponds to the position of the first groove. The upper end of the second buffer assembly is placed in the second groove. The caster housing is threadedly connected to the side plate through the seventh hole, the fifth hole and the second screw. The wheel axle is connected to the side plate and the caster housing through the fourth hole and the sixth hole. The second square hole and the second groove on the caster housing can limit the second buffer assembly, playing a buffering role and increasing the thickness of the entire caster housing to increase the supporting force for the side plate.

[0015] Preferably, the upper end surface of the second buffer spring is placed in the first groove and the second groove. The second buffer spring facilitates buffering the force applied to the wheel axle.

[0016] Preferably, the lower end surface of the sliding block is a curved surface, and the wheel axle is in contact connection with the sliding block through the curved surface. The curved surface at the lower end of the sliding block cooperates with the fourth hole and the sixth hole to limit the wheel axle, enabling the wheel axle to better drive the sliding block to slide up and down.

[0017] Preferably, the wheel axle is provided with convex ribs. The convex ribs are located at both ends of the wheel axle and are between the wheel and the caster body. The convex ribs and the wheel axle are integrally formed. The convex ribs are used to limit the wheel to prevent it from shaking left and right, increasing the stability of the caster.

[0018] The beneficial effects of the present invention are as follows: achieving the purpose of stability and good buffering and shock absorption; enabling the force on the load-bearing plate to be evenly applied to the entire caster; the first buffer assembly is convenient to install and can achieve the function of sliding up and down; the first permanent magnet corresponds to the second permanent magnet and can support the upper rod and the lower rod with repulsive force, firmly connecting the mounting plate and the first buffer assembly; the baffle blocks some dirt and prevents the wheel from turning into garbage; the second buffer assembly can slide in the first square groove, playing a buffering role; increasing the thickness of the entire caster housing can increase the supporting force for the side plate; the second buffer spring is used to buffer the force applied to the wheel axle; the curved surface at the lower end of the sliding block cooperates with the fourth hole and the sixth hole to limit the wheel axle, enabling the wheel axle to better drive the sliding block to slide up and down; the convex ribs are used to limit the wheel, increasing the stability of the caster. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2It is the exploded view of the present invention;

[0021] Figure 3 It is the sectional view of the front view;

[0022] Figure 4 It is the sectional view of the left view;

[0023] Figure 5 It is the structural schematic diagram of the caster body;

[0024] Figure 6 It is the structural schematic diagram of the caster housing;

[0025] Figure 7 It is the structural schematic diagram of the buffer component II.

[0026] In the figure: 1. mounting plate, 2. buffer component I, 3. caster body, 4. caster housing, 5. axle, 6. wheel, 7. buffer component II, 8. baffle, 9. upper plate, 10. side plate, 11. upper rod, 12. lower rod, 13. screw I, 14. buffer shock absorber, 15. lower rod cover, 16. nut, 17. permanent magnet block I, 18. permanent magnet block II, 19. buffer spring I, 20. hole I, 21. hole II, 22. hole III, 23. square groove I, 24. square hole I, 25. hole IV, 26. groove I, 27. hole V, 28. square groove II, 29. square hole II, 30. hole VI, 31. groove II, 32. hole VII, 33. screw II, 34. buffer spring II, 35. sliding block, 36. curved surface, 37. convex rib. Detailed implementation manners

[0027] The following further describes the present invention in conjunction with the accompanying drawings and specific implementation manners.

[0028] As Figures 1 to 5In an embodiment, an industrial caster structure with buffering and shock absorption includes a mounting plate 1, a first buffering component 2, a caster body 3, a caster housing 4, an axle 5, a wheel 6, and a second buffering component 7. The first buffering component 2 includes an upper rod 11, a lower rod 12, a first screw 13, a nut 16, and a buffering and shock-absorbing member 14. The upper end surface of the upper rod 11 is fixedly connected to the lower end surface of the mounting plate 1. The buffering and shock-absorbing member 14 is placed inside the lower rod 12. The buffering and shock-absorbing member 14 includes a first permanent magnet block 17, a second permanent magnet block 18, and a first buffer spring 19. The lower end of the upper rod 11 is threadedly connected to the first permanent magnet block 17 through the first screw 13. The second permanent magnet block 18 is placed on the inner bottom of the lower rod 12 and is fixedly connected to the lower rod 12. The first buffer spring 19 is placed between the first permanent magnet block 17 and the second permanent magnet block 18. The upper end surface of the first buffer spring 19 is in contact connection with the lower end surface of the first permanent magnet block 17, and the lower end surface of the first buffer spring 19 is in contact connection with the upper end surface of the second permanent magnet block 18. The positions of the first permanent magnet block 17 and the second permanent magnet block 18 correspond to each other. The lower end of the lower rod 12 is connected to the upper end surface of the caster body 3 through the first screw 13 and the nut 16. The caster body 3 is provided with a side plate 10. The outer side surface of the side plate 10 is threadedly connected to the inner side surface of the caster housing 4. The wheel 6 is placed between the two side plates 10. The wheel 6 is rotationally connected to the two side plates 10 through the axle 5. The wheel 6 is rotationally connected to the caster body 3 through the axle 5. The side plate 10 is provided with a first square groove 23, and the first square groove 23 is placed on the outer side of the side plate 10. The caster housing 4 is provided with a second square groove 28, and the second square groove 28 is placed on the inner side of the caster housing 4. The position of the second square groove 28 corresponds to the position of the first square groove 23. The second buffering component 7 includes a second buffer spring 34 and a sliding block 35. The second buffer spring 34 is placed on the upper end surface of the sliding block 35 and is fixedly connected to the upper end surface of the sliding block 35. The sliding block 35 is placed between the first square groove 23 and the second square groove 28. The sliding block 35 is slidably connected to the side plate 10 and the caster housing 4 through the first square groove 23 and the second square groove 28. The axle 5 is placed on the lower end surface of the sliding block 35, and the lower end surface of the sliding block 35 is in contact connection with the axle 5.

[0029] As Figure 1 shown, the mounting plate 1 is provided with a first hole 20, and a plurality of first holes 20 are placed at the end points of the mounting plate 1.

[0030] As Figure 2 and Figure 3 shown, the upper end of the lower rod 12 is provided with a lower rod cover 15. The lower rod cover 15 is connected to the lower rod 12. The lower rod cover 15 is provided with a second hole 21. The first permanent magnet block 17 is threadedly connected to the lower end of the upper rod 11 through the first screw 13 passing through the second hole 21.

[0031] As Figure 2 and Figure 3As shown, a third hole 22 is provided on the first permanent magnet block 17. The first permanent magnet block 17 is threadedly connected to the lower end of the upper rod 11 through a first screw 13 passing through the second hole 21 and the third hole 22.

[0032] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, a baffle 8 and an upper plate 9 are provided on the caster body 3. The upper plate 9 is placed on the upper end faces between the two side plates 10. The upper plate 9 and the side plates 10 are integrally formed. The baffle 8 is placed on the left and right sides between the two side plates 10. The front and rear ends of the baffle 8 are fixedly connected to the side plates 10. The upper end face of the baffle 8 is fixedly connected to the lower end face of the upper plate 9. The lower end face of the lower rod 12 is threadedly connected to the upper end face of the upper plate 9 and the nut 16 through a first screw 13.

[0033] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, a first square hole 24, a fourth hole 25, a first groove 26 and a fifth hole 27 are provided on the side plate 10. The first square hole 24 is placed exactly in the middle of the square groove 23. The fourth hole 25 is placed on the lower end faces of the square groove 23 and the first square hole 24. The fourth hole 25 communicates with the first square hole 24. The first groove 26 is semi-circular. The first groove 26 is placed on the upper end face of the square groove 23. A plurality of fifth holes 27 are evenly arranged around the square groove 23. The upper end of the second buffer assembly 7 is placed in the first groove 26. The caster housing 4 is threadedly connected to the side plate 10 through the fifth holes 27. The wheel axle 5 is connected to the side plate 10 through the fourth hole 25.

[0034] As Figure 1 , Figure 2 , Figure 3 and Figure 6 shown, a second square hole 29, a sixth hole 30, a second groove 31, a seventh hole 32 and a second screw 33 are provided on the caster housing 4. The second square hole 29 is placed exactly in the middle of the square groove 28. The position of the second square hole 29 corresponds to the position of the first square hole 24. The sixth hole 30 is placed on the lower end faces of the square groove 28 and the second square hole 29. The sixth hole 30 communicates with the second square hole 29. The position of the sixth hole 30 corresponds to the position of the fourth hole 25. A plurality of seventh holes 32 are evenly arranged around the square groove 28. The second buffer assembly 7 is placed in the square groove 28. The second groove 31 is semi-circular. The second groove 31 is placed on the upper end face of the square groove 28. The position of the second groove 31 corresponds to the position of the first groove 26. The upper end of the second buffer assembly 7 is placed in the second groove 31. The caster housing 4 is threadedly connected to the side plate 10 through the seventh holes 32, the fifth holes 27 and the second screw 33. The wheel axle 5 is connected to the side plate 10 and the caster housing 4 through the fourth hole 25 and the sixth hole 30.

[0035] As Figure 1 ,Figure 2 , Figure 4 and Figure 7 As shown in Figure 2 , Figure 4 and Figure 7 , the upper end surface of the second buffer spring 34 is placed in the first groove 26 and the second groove 31.

[0036] As Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown in Figure 1 , Figure 2 , Figure 4 and Figure 7 , the lower end surface of the sliding block 35 is a curved surface 36, and the wheel axle 5 is in contact connection with the sliding block 35 through the curved surface 36.

[0037] As Figure 2 and Figure 4 As shown in Figure 2 and Figure 4 , the wheel axle 5 is provided with convex ridges 37. The convex ridges 37 are placed at both ends of the wheel axle 5, between the wheel 6 and the caster body 3, and the convex ridges 37 and the wheel axle 5 are integrally formed.

[0038] During installation, the mounting plate 1 can be installed on the required load-bearing plate through the first hole 20 with a mounting piece, which is convenient and fast. When loading goods, due to inertia, the goods conduct a huge force to each industrial caster. The first buffer assembly 2 bears the pressure, the upper rod 11 drives the first permanent magnet block 17 to move downward, compressing the first buffer spring 19. The repulsive force of the second permanent magnet block 18 pushes the first permanent magnet block 17 upward, and the first buffer spring 19 rebounds upward to achieve the effect of the first buffer. Then the force is conducted to the caster body 3, and the caster body 3 moves downward, causing the wheel axle 5 to drive the wheel 6 to press the second buffer member upward. The sliding block 35 presses the second buffer spring 34 to compress upward. The sliding block 35 slides in the first square groove 23 and the second square groove 28, and the second buffer spring 34 rebounds downward, having the second buffer effect, and the buffer direction is opposite to the first buffer direction. In this way, the vibration can be reduced, and good load-bearing capacity can be achieved, so that the actual force on the caster is reduced a lot, and the goods will not be damaged due to the lack of buffer of the caster, achieving the purpose of stability and good buffer shock absorption.

Claims

1. An industrial caster structure with buffer and shock absorption, characterized in that, It includes a mounting plate, a first buffer assembly, a caster body, a caster housing, a wheel axle, a wheel and a second buffer assembly. The first buffer assembly includes an upper rod, a lower rod, a first screw, a nut and a buffer shock absorber. The upper end face of the upper rod is fixedly connected to the lower end face of the mounting plate. The buffer shock absorber is placed inside the lower rod. The buffer shock absorber includes a first permanent magnet block, a second permanent magnet block and a first buffer spring. The lower end of the upper rod is threadedly connected to the first permanent magnet block through the first screw. The second permanent magnet block is placed on the inner bottom of the lower rod and is fixedly connected to the lower rod. The first buffer spring is placed between the first permanent magnet block and the second permanent magnet block. The upper end face of the first buffer spring is in contact connection with the lower end face of the first permanent magnet block, and the lower end face of the first buffer spring is in contact connection with the upper end face of the second permanent magnet block. The positions of the first permanent magnet block and the second permanent magnet block correspond to each other. The lower end of the lower rod is connected to the upper end face of the caster body through the first screw and the nut. The caster body is provided with side plates. The outer side face of the side plates is threadedly connected to the inner side face of the caster housing. The wheel is placed between the two side plates and is rotationally connected to the two side plates through the wheel axle. The wheel is rotationally connected to the caster body through the wheel axle. The side plate is provided with a first square groove which is placed on the outer side of the side plate. The caster housing is provided with a second square groove which is placed on the inner side of the caster housing. The position of the second square groove corresponds to the position of the first square groove. The second buffer assembly includes a second buffer spring and a sliding block. The second buffer spring is placed on the upper end face of the sliding block and is fixedly connected to the upper end face of the sliding block. The sliding block is placed between the first square groove and the second square groove and is slidably connected to the side plate and the caster housing through the first square groove and the second square groove. The wheel axle is placed on the lower end face of the sliding block, and the lower end face of the sliding block is in contact connection with the wheel axle.

2. The structure of an industrial caster for buffering and shock absorption according to claim 1, characterized in that, The mounting plate is provided with a first hole, and several first holes are placed at the endpoints of the mounting plate.

3. A buffer and shock-absorbing industrial caster structure according to claim 1, characterized in that, The upper end of the lower rod is provided with a lower rod cover which is connected to the lower rod. The lower rod cover is provided with a second hole, and the first permanent magnet block is threadedly connected to the lower end of the upper rod through the first screw passing through the second hole.

4. The structure of an industrial caster for buffering and shock absorption according to claim 3, characterized in that, The first permanent magnet block is provided with a third hole, and the first permanent magnet block is threadedly connected to the lower end of the upper rod through the first screw passing through the second hole and the third hole.

5. A buffer and shock-absorbing industrial caster structure according to claim 1, characterized in that, The caster body is provided with a baffle and an upper plate. The upper plate is placed on the upper end face between the two side plates and is integrally formed with the side plates. The baffle is placed on the left and right sides between the two side plates. The front and rear ends of the baffle are fixedly connected to the side plates. The upper end face of the baffle is fixedly connected to the lower end face of the upper plate. The lower end face of the lower rod is threadedly connected to the upper end face of the upper plate and the nut through the first screw.

6. The structure of an industrial caster with buffer and shock absorption according to claim 1, characterized in that, The side plate is provided with a first square hole, a fourth hole, a first groove and a fifth hole. The first square hole is located exactly in the middle of the first square groove. The fourth hole is located on the lower end surfaces of the first square groove and the first square hole, and the fourth hole communicates with the first square hole. The first groove is semi-circular and is located on the upper end surface of the first square groove. A plurality of fifth holes are evenly distributed around the first square groove. The upper end of the second buffer assembly is placed in the first groove. The caster housing is threadedly connected to the side plate through the fifth holes, and the wheel axle is connected to the side plate through the fourth hole.

7. The structure of an industrial caster for buffering and shock absorption according to claim 6, characterized in that, The caster housing is provided with a second square hole, a sixth hole, a second groove, a seventh hole and a second screw. The second square hole is located exactly in the middle of the second square groove. The position of the second square hole corresponds to the position of the first square hole. The sixth hole is located on the lower end surfaces of the second square groove and the second square hole, and the sixth hole communicates with the second square hole. The position of the sixth hole corresponds to the position of the fourth hole. A plurality of seventh holes are evenly distributed around the second square groove. The second buffer assembly is placed in the second square groove. The second groove is semi-circular and is located on the upper end surface of the second square groove. The position of the second groove corresponds to the position of the first groove. The upper end of the second buffer assembly is placed in the second groove. The caster housing is threadedly connected to the side plate through the seventh holes, the fifth holes and the second screw. The wheel axle is connected to the side plate and the caster housing through the fourth hole and the sixth hole.

8. The structure of an industrial caster with buffering and shock absorption according to claim 7, characterized in that, The upper end surface of the second buffer spring is placed in the first groove and the second groove.

9. The structure of an industrial caster for buffering and shock absorption according to claim 1, wherein, The lower end surface of the sliding block is curved, and the wheel axle is in contact connection with the sliding block through the curved surface.

10. A buffer and shock-absorbing industrial caster structure according to claim 1, characterized in that, The wheel axle is provided with convex ribs. The convex ribs are located at both ends of the wheel axle and are between the wheel and the caster body. The convex ribs and the wheel axle are integrally formed.

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