CN114407577A - A vibration damping buffer type universal caster structure - Google Patents

Abstract

The invention discloses a vibration-damping buffer type universal caster structure, and aims to provide a vibration-damping buffer type universal caster structure with good buffering effect. Including casters and fixing blocks, the side of the casters is connected with installation pipes, the side walls of the fixing blocks are provided with installation grooves, the installation pipes are sleeved with the installation grooves, a buffer assembly is connected between the outer side walls of the installation pipes and the inner side walls of the installation grooves, and the casters and the fixing blocks A fixed shaft is connected, and the fixed shaft passes through the caster wheel, the installation pipe and the fixed block in turn, and the top of the fixed block is rotatably connected with a connecting plate. The beneficial effects of the invention are as follows: the buffer assembly can ensure good vibration damping and buffering effect between the caster and the fixed block; the buffer washer can ensure the good vibration damping and buffering effect between the fixed shaft and the caster; the spherical connecting block has an arc-shaped matching section The recessed groove can make the fixed shaft and the caster form an acute angle, which can satisfy the good vibration damping and buffering effect of the caster on different bottom surfaces.

Description

A vibration damping buffer type universal caster structure

technical field

The invention relates to the technical field of casters, in particular to a vibration-damping buffer type universal caster structure.

Background technique

Casters are widely used in production, and casters can help people move objects easily. In the traditional caster structure, the vibration damping and buffering effect is achieved by arranging a spring in the structure where the bracket is connected with the wheel shaft. In this way, the spring can only buffer the vibration in one direction, and the vibration damping and buffering effect is poor.

SUMMARY OF THE INVENTION

The present invention provides a vibration-damping buffer type universal caster structure with good buffering effect in order to overcome the deficiency of poor buffering effect in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A vibration damping buffer type universal caster structure includes casters and a fixing block, a mounting pipe is connected to the side of the caster, a mounting groove is provided on the side wall of the fixing block, the mounting pipe is sleeved with the mounting groove, and the mounting pipe is connected to the mounting groove. A buffer assembly is connected between the outer side wall of the tube and the inner side wall of the installation groove, the caster and the fixing block are connected with a fixing shaft, and the fixing shaft passes through the caster, the installation tube and the fixing block in turn, and the top of the fixing block is rotatably connected with a connection plate.

The installation pipe that is fixedly connected on the side of the caster is inserted into the installation groove set on the side of the fixed block to complete the socket connection, and the fixed shaft passes through the caster, the installation pipe and the fixed block to fix it. The outer side wall of the installation pipe and the inner side wall of the installation groove are connected with a buffer assembly, and the buffer assembly can make the caster realize the function of damping and buffering, and improve the damping and buffering effect of the caster. The top of the fixed block is connected with a connecting plate, and the connecting plate can be rotated, which can realize any rotation of the caster on the horizontal plane and realize the universal function of the caster.

Preferably, the inner wall of the installation pipe is provided with a let-away groove, the cross-sectional shape of the let-away groove is arc-shaped, and the side wall of the installation pipe is provided with a number of evenly arranged installation holes, and the installation holes are communicated with the let-away groove, The buffer assembly is connected with the installation hole, and the abdication groove corresponds to the fixed shaft. The mounting holes provide the mounting position of the buffer components to ensure the realization of the shock-absorbing and buffering function.

Preferably, the buffer assembly includes a buffer tube and a buffer head, the buffer tube is connected to the mounting hole, one end of the buffer tube is connected with a buffer plug, the other end of the buffer tube is sleeved with the buffer head, and the buffer tube is provided with There is a buffer spring, one end of the buffer spring is connected with the buffer head, and the other end of the buffer spring is connected with the buffer plug cover. The buffer tube extends into the installation hole, a spring is arranged in the buffer tube, one end of the spring is connected with the buffer plug cover, and the other end is connected with a buffer head. Several buffer components are arranged around the installation tube to ensure good vibration damping and buffering effect of the casters.

Preferably, the end of the buffer head is hemispherical, and the buffer head is in contact with the installation groove. The end of the buffer head is hemispherical, and the contact between the buffer head and the installation groove is point contact, which reduces the friction during rotation, ensures the normal running function of the caster, and makes the running smoother.

Preferably, the inner side wall of the installation groove is provided with an annular guide groove, and the buffer head is embedded in the guide groove. The setting of the guide groove limits the connection between the buffer head and the installation groove to ensure that no deflection occurs during rotation, and to ensure that the elastic direction of the buffer spring is vertical, so that the shock absorption and buffering effect is better.

Preferably, a spherical connecting block is provided in the middle of the fixed shaft, the fixed shaft passes through the center of the connecting block, and a surface of the connecting block is provided with an annular ball groove, the connecting block corresponds to the abdication groove, the The ball grooves correspond to the mounting holes. The arc surface of the connecting block set in the middle of the fixed shaft corresponds to the arc surface of the giving way slot, to ensure that the connecting block can be rotated in the giving way slot, so that when the caster is running on the inclined ground, the buffer spring is always in a vertical state, and the buffer spring is guaranteed to be in a vertical state. The shock absorption effect provided is better.

Preferably, balls are provided in the ball grooves, and the balls are inserted into the mounting holes and are in contact with the buffer cover. The balls in the ball groove are embedded in the mounting holes at the same time and contact with the buffer cover. The balls play a role of connecting and supporting, ensuring that the caster and the fixed shaft can form an angle when the caster is running on inclined ground, and the balls play a connecting transition support effect.

Preferably, both ends of the fixed shaft are sleeved with buffer washers, the two buffer washers are respectively sleeved with the caster and the fixed block, both ends of the fixed shaft are connected with nuts, and the two nuts are placed on the caster and the fixed block respectively. outside of the fixed block. The diameter of the two ends of the fixed shaft is smaller than the inner diameter of the center hole of the caster and the fixed block. The buffer washer is made of elastic material to ensure that the fixed shaft can form an acute angle with the caster to meet the vibration damping and buffering effect of the caster on different road surfaces. Better; the two ends of the fixed shaft are provided with threads, the nuts are connected with the threads, and the two nuts are on the outside of the caster and the fixed block to limit the connection between the caster and the fixed block.

Preferably, the top of the fixing block is provided with a rotating sleeve, the connecting plate is connected with a connecting rod, and the connecting rod is connected with the rotating sleeve. The connecting rod is inserted into the rotating sleeve for socket connection, and the end side wall of the connecting rod is connected with the inner wall of the rotating sleeve and has the same diameter. When the inside of the pipe is pressed down, the compressed air is used for buffering without affecting the rotation of the connecting plate, so that the casters can realize the universal rotation in the horizontal direction.

Preferably, the end of the connecting rod is connected with a sealing gasket, and the side wall of the sealing gasket is connected with the inner wall of the rotating sleeve. The sealing gasket acts as a seal, so that when the connecting rod is pressed down, the gas between the connecting rod and the rotating sleeve will not be pressed out, so as to ensure a good vibration damping and buffering effect.

The beneficial effects of the invention are as follows: the buffer assembly can ensure good vibration damping and buffering effect between the caster and the fixed block; the buffer washer can ensure the good vibration damping and buffering effect between the fixed shaft and the caster; the spherical connecting block has an arc-shaped matching section The recessed groove can make the fixed shaft and the caster form an acute angle, which can meet the good vibration damping and buffering effect of the caster on different bottom surfaces; the ball plays the role of supporting and reducing friction; the connecting rod and the rotating sleeve cooperate to ensure that the fixed block and the The damping and buffering effect between the connecting plates is good; the sealing gasket ensures the air tightness of the connecting rod and the rotating sleeve, so that the damping and buffering effect is stable.

Description of drawings

Fig. 1 is the three-dimensional view of the structure of the present invention;

Fig. 2 is the side view of the present invention;

Fig. 3 is the front view of the present invention;

Fig. 4 is A-A sectional view in Fig. 2;

Fig. 5 is B-B sectional view in Fig. 3;

Fig. 6 is the enlarged view of D place in Fig. 4;

7 is a schematic diagram of a fixed shaft in the present invention;

FIG. 8 is a sectional view at C in FIG. 3 .

In the attached drawing,

1. Caster wheel, 2. Fixing block, 3. Mounting tube, 4. Buffer assembly, 5. Fixing shaft, 6. Connecting plate, 20. Mounting slot, 21. Guide slot, 22. Swivel sleeve, 30. Allowance slot , 31. Mounting hole, 40. Buffer tube, 41. Buffer head, 42. Buffer plug, 43. Buffer spring, 50. Connection block, 51. Ball groove, 52. Ball, 53. Buffer washer, 54. Nut, 60. Connecting rod, 61. Gasket.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Embodiment 1, as shown in FIGS. 1-6 , is a vibration damping and buffering type universal caster structure, including a caster 1 and a fixing block 2 . A mounting tube 3 is connected to the side of the caster 1 . A mounting groove 20 is provided on the side wall of the fixing block 2 . The installation pipe 3 is sleeved with the installation groove 20 . A buffer assembly 4 is connected between the outer side wall of the installation pipe 3 and the inner side wall of the installation groove 20 . A fixed shaft 5 is connected to the caster 1 and the fixed block 2 . The fixed shaft 5 passes through the caster 1 , the installation tube 3 and the fixed block 2 in sequence. A connecting plate 6 is rotatably connected to the top of the fixed block 2 .

As shown in FIGS. 5 and 6 , the inner wall of the installation pipe 3 is provided with a vacant groove 30 . The cross-sectional shape of the escape groove 30 is arc-shaped. The side wall of the installation pipe 3 is provided with a number of evenly arranged installation holes 31 . The mounting hole 31 communicates with the letting slot 30 . The buffer assembly 4 is connected to the mounting hole 31 . The let-away groove 30 corresponds to the fixed shaft 5 .

As shown in FIGS. 4 , 5 and 6 , the buffer assembly 4 includes a buffer tube 40 and a buffer head 41 . The buffer tube 40 is connected to the mounting hole 31 . One end of the buffer tube 40 is connected with a buffer plug cover 42 . The other end of the buffer tube 40 is sleeved with the buffer head 41 . A buffer spring 43 is provided in the buffer tube 40 . One end of the buffer spring 43 is connected to the buffer head 41 . The other end of the buffer spring 43 is connected to the buffer plug cover 42 .

As shown in FIG. 6 , the end portion of the buffer head 41 is hemispherical. The buffer head 41 is in contact with the mounting groove 20 . An annular guide groove 21 is provided on the inner side wall of the installation groove 20 . The buffer head 41 is inserted into the guide groove 21 .

As shown in FIGS. 4 , 5 , 6 and 7 , a spherical connecting block 50 is provided in the middle of the fixed shaft 5 . The fixed shaft 5 passes through the center of the connecting block 50 . An annular ball groove 51 is provided on the surface of the connecting block 50 . The connecting block 50 is embedded in the yield slot 30 and can swing relative to the yield slot 30. The angle between the caster 1 and the fixed shaft 5 can be changed to adapt to the adjustment of different road surfaces, so that the vibration damping and buffering effect is better. The center line of the ball groove 51 and the center line of the mounting hole 31 are on the same plane, and the width of the ball groove 51 is the same as the diameter of the mounting hole 31 . Balls 52 are provided in the ball groove 51 . The balls 52 are inserted into the mounting holes 31 and are in contact with the buffer cover 42 . The balls 52 correspond to the mounting holes 31 , and the balls 52 are in contact with the buffer cover 42 and the ball grooves 51 , and play the role of supporting the mounting tube 3 and the fixed shaft 5 .

As shown in FIGS. 1-3 , both ends of the fixed shaft 5 are sleeved with buffer washers 53 , and the two buffer washers 53 are respectively sleeved with the caster 1 and the fixed block 2 . Both ends of the fixed shaft 5 are connected with nuts 54 , and the two nuts 54 are placed on the outer sides of the caster 1 and the fixed block 2 respectively. The nut 54 connects the caster 1 and the fixing block 2 to a limit.

As shown in FIG. 8 , the top of the fixed block 2 is provided with a rotating sleeve 22 . A connecting rod 60 is connected to the connecting plate 6 . The connecting rod 60 is connected to the rotating sleeve 22 . A sealing gasket 61 is connected to the end of the connecting rod 60 . The side wall of the sealing gasket 61 is connected with the inner wall of the rotating sleeve 22 .

The working principle of the present invention is as follows: as shown in Figures 1-8, the connecting plate is connected with the vehicle body, and the connecting rod 60 is connected with the rotating sleeve 22, which can realize the universal direction of the caster 1 in the plane while realizing vibration reduction and buffering. When rotating, the sealing gasket 61 can prevent the air leakage of the connecting rod placed in the rotating sleeve 22 during the pressing process, so as to ensure the effect of damping and buffering. When driving on a flat road, the buffer assembly 4 connected in the mounting hole 31 can provide vibration damping and buffering effect, and several buffer assemblies 4 are arranged around the installation tube 3, so that when the caster 1 is running, the buffer assembly 4 can provide installation The damping and buffering effect between the tube 2 and the fixing block 2 ensures better damping and damping effect and more stable damping and damping effect. When driving on uneven road or inclined road, the angle of the fixed shaft 5 and the caster 1 can be adjusted, so that the caster 1 can run stably, and at the same time, the vibration damping and buffering effect can be improved. The arrangement of the balls 52 plays the role of supporting the fixed shaft and the installation tube 3 , so that the angle of the fixed shaft 5 and the caster 1 is changed more smoothly.

Claims (10)

1. A vibration-damping buffer type universal caster structure, characterized in that it comprises a caster (1) and a fixing block (2), a mounting tube (3) is connected to the side of the caster (1), and the fixing block (2) ) The side wall is provided with an installation groove (20), the installation pipe (3) is sleeved with the installation groove (20), and a buffer assembly is connected between the outer side wall of the installation pipe (3) and the inner side wall of the installation groove (20). (4), the caster (1) and the fixed block (2) are connected with a fixed shaft (5), and the fixed shaft (5) passes through the caster (1), the installation pipe (3) and the fixed block (2) in sequence , a connecting plate (6) is rotatably connected to the top of the fixing block (2). 2 . The vibration-damping and buffering type universal caster structure according to claim 1 , wherein the inner wall of the installation pipe ( 3 ) is provided with an escape groove ( 30 ), and the cross-section of the escape groove ( 30 ) is provided. 3 . The shape is arc-shaped, the side wall of the installation pipe (3) is provided with a number of evenly arranged installation holes (31), the installation holes (31) communicate with the abdication groove (30), and the buffer assembly (4) is connected to The installation hole (31) is connected, and the abdication groove (30) corresponds to the fixed shaft (5). 3. A vibration-absorbing and buffering type universal caster structure according to claim 2, wherein the buffer assembly (4) comprises a buffer tube (40) and a buffer head (41), the buffer tube (40) ) is connected to the mounting hole (31), one end of the buffer tube (40) is connected with a buffer plug cover (42), the other end of the buffer tube (40) is sleeved with the buffer head (41), the buffer tube (40) ) is provided with a buffer spring (43), one end of the buffer spring (43) is connected to the buffer head (41), and the other end of the buffer spring (43) is connected to the buffer plug cover (42). 4 . The vibration-damping and buffering swivel caster structure according to claim 3 , wherein the end of the buffer head ( 41 ) is hemispherical, and the buffer head ( 41 ) is connected to the mounting groove ( 20 ). touch. 5. The vibration-damping and buffer-type universal caster structure according to claim 4, wherein an annular guide groove (21) is provided on the inner side wall of the mounting groove (20), and the buffer head (41) Insert into the guide groove (21). 6 . The vibration damping and buffering type universal caster structure according to claim 3 , wherein a spherical connecting block ( 50 ) is arranged in the middle of the fixed shaft ( 5 ), and the fixed shaft ( 5 ) passes through 5 . Passing through the center of the connecting block (50), the surface of the connecting block (50) is provided with an annular ball groove (51), the connecting block (50) corresponds to the abdication groove (30), and the ball groove (51) Corresponds to the mounting hole (31). 7 . The vibration damping and buffering type universal caster structure according to claim 6 , wherein balls ( 52 ) are provided in the ball grooves ( 51 ), and the balls ( 52 ) are embedded in the mounting holes ( 31 ). 8 . ) and come into contact with the buffer plug (42). 8 . The vibration damping and buffering type universal caster structure according to claim 6 , wherein both ends of the fixed shaft ( 5 ) are sleeved with buffer washers ( 53 ), and the two buffer washers ( 8 . 53) are respectively sleeved with the caster (1) and the fixed block (2), the two ends of the fixed shaft (5) are connected with nuts (54), and the two nuts (54) are respectively placed on the caster (1) and the fixed block (2) outside. 9 . The vibration-damping and buffering type universal caster structure according to claim 1 , wherein a rotating sleeve ( 22 ) is provided on the top of the fixing block ( 2 ), and the connecting plate ( 6 ) is connected with a rotating sleeve ( 22 ). A connecting rod (60) is connected with the rotating sleeve (22). 10. The vibration damping and buffering type universal caster structure according to claim 9, wherein a sealing gasket (61) is connected to the end of the connecting rod (60), and the sealing gasket (61) The side wall is connected with the inner wall of the rotating sleeve (22).

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