Hydraulic cylinder with a buffer structure

Abstract

The present application relates to the field of hydraulic oil cylinder, especially to a hydraulic oil cylinder with buffer structure, which comprises an oil cylinder body, a cylinder seat is fixedly installed at the lower end of the oil cylinder body, front moving wheels are installed at both ends of the cylinder seat, an axle bracket is fixedly installed at the front end of the cylinder seat near the edge, a No.1 shaft is rotatably installed at the end of the axle bracket, a No.2 shaft is rotatably installed through the middle of the front end of the axle bracket, the No.2 shaft is coaxially arranged with the No.1 shaft, and the rear end of the No.1 shaft is fixed with one of the front moving wheels. The present application can automatically move the cylinder body part of the oil cylinder body during the process of returning the piston rod after a single pushing stroke, effectively improve the convenience, slow down the extension stroke of the piston rod, make it stable to push the goods, speed up the return stroke of the piston rod, shorten the time consumption, and improve the work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydraulic oil cylinder, especially to a hydraulic oil cylinder with buffer structure. BACKGROUND

[0002] The hydraulic oil cylinder is an execution element in the hydraulic system, and the main function is to realize linear reciprocating motion under the action of hydraulic oil, thereby pushing the load to work. The hydraulic oil cylinder has the characteristics of simple structure and large output force. When pushing the goods on the ground rail, the hydraulic oil cylinder is often used to push.

[0003] However, in the actual pushing process, after the single pushing stroke of the hydraulic oil cylinder is completed, the piston rod needs to be retracted, and then the hydraulic oil cylinder is manually pushed to move forward on the ground rail and close to the goods, and then the piston rod of the hydraulic oil cylinder can be extended again to push the goods. The operation process is quite cumbersome, which leads to inconvenience. SUMMARY

[0004] The purpose of the present application is to solve the shortcomings in the background art, and a hydraulic oil cylinder with buffer structure is proposed.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a hydraulic oil cylinder with buffer structure, comprising an oil cylinder body, a cylinder seat is fixedly installed at the lower end of the oil cylinder body, front moving wheels are installed at both ends of the cylinder seat, an axle bracket is fixedly installed at the front end of the cylinder seat near the edge, a No. 1 shaft is rotatably installed at the end of the axle bracket, a No. 2 shaft is rotatably installed through the middle of the front end of the axle bracket, the No. 2 shaft is coaxially arranged with the No. 1 shaft, the rear end of the No. 1 shaft is fixed with one of the front moving wheels, a front moving ratchet wheel is coaxially embedded at the front end of the No. 1 shaft, a rotating disc is coaxially embedded at the rear end of the No. 2 shaft, a pushing pawl is rotatably installed at the rear end edge of the rotating disc, the pushing pawl is on the front moving ratchet wheel, a front moving gear is coaxially embedded on the outer surface of the No. 2 shaft, a front moving tooth plate is engaged at the lower part of the front moving gear, the front moving tooth plate is connected with the piston rod of the oil cylinder body, a rail clamping piece is arranged in the middle of the cylinder seat, a flow control piece is arranged at the oil port of the oil cylinder body, and a push cap is fixedly installed at the end of the piston rod of the oil cylinder body.

[0006] Preferably, a T-shaped seat is fixedly installed at the lower end of the axle bracket, the front moving tooth plate is slidably installed on the outer surface of the T-shaped seat, a synchronous bracket is fixedly installed at the end of the front moving tooth plate, and the end of the synchronous bracket is fixed with the piston rod of the oil cylinder body.

[0007] Preferably, a top claw spring is fixedly installed at the rear end edge of the rotating disc, a connecting head is fixedly installed at the end of the top claw spring, and the connecting head is rotatably connected with the pushing pawl.

[0008] Preferably, the rail clamping piece comprises a threaded rod rotatably installed through the middle of the cylinder base, the two ends of the threaded rod are symmetrically arranged, and the two ends of the threaded rod are screwed with threaded sleeves, the lower end of the threaded sleeve is fixedly installed with a rail clamping base, and the two ends of the rail clamping base are elastically installed with positioning wheels.

[0009] Preferably, the two sides of the threaded rod are provided with limiting frames, the end of the limiting frame is fixed with the cylinder base, the threaded sleeve is slidably installed on the outer surface of the limiting frame, the two ends of the rail clamping base are slidably installed with hexagonal guide columns, the end of the hexagonal guide column is fixedly installed with a wheel seat, the positioning wheel is installed in the inside of the wheel seat, the outside of the hexagonal guide column is wound with an adaptive spring, and the two ends of the adaptive spring are fixed with the wheel seat and the rail clamping base respectively.

[0010] Preferably, the flow control piece comprises a connecting pipe fixedly installed at the oil port of the oil cylinder body, a flow control ball is installed in the inside of the connecting pipe, a control rod extends from the side surface of the flow control ball, the control rod is rotatably connected with the connecting pipe, and a control tab extends from the end of the control rod.

[0011] Preferably, the outer surface of the connecting pipe extends an extension frame, the end of the extension frame is fixedly installed with a positioning cap, and a reset torsion spring is arranged between the outer surface of the control rod and the outer surface of the connecting pipe.

[0012] Preferably, a plurality of small holes are uniformly arranged through the upper and lower end surfaces of the flow control ball, and large holes are arranged through the front and rear ends of the flow control ball.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1、When the piston rod of the oil cylinder body is extended to push the goods on the ground rail, the forward tooth plate will be driven to move synchronously by the piston rod to drive the forward gear to rotate, thereby driving the pushing pawl on the rotating disc to rotate on the outer surface of the forward gear. When the single pushing stroke is completed and the piston rod of the oil cylinder body is retracted, the forward tooth plate will move in the opposite direction, thereby driving the forward gear to rotate in the opposite direction. At this time, the pushing pawl on the rotating disc will be pushed on the forward gear to push the forward gear, so that the No. 1 shaft rotates, thereby driving the forward wheel to roll on the ground rail, so that the cylinder body of the oil cylinder body is automatically moved forward. In this way, the cylinder body of the oil cylinder body is automatically moved forward in the process of retraction of the piston rod after the single pushing stroke, which eliminates the need for workers to manually push the hydraulic cylinder forward, thereby effectively improving the convenience.

[0015] 2、When the threaded rod is rotated to move the two rail clamping seats towards each other to clamp on the ground rail to fix the oil cylinder body, the control top plate will move synchronously with the rail clamping seat to push the control tab, so that the control lever can be rotated, and then drive the flow control ball to rotate in the inner pipe, so that the small hole on the flow control ball faces upwards, and the hydraulic oil can flow into the oil cylinder body through the small hole, thereby increasing the resistance of the hydraulic oil flow, thereby slowing down the extension stroke of the piston rod, so that it can stably push the goods, when the pushing is completed, the threaded rod is rotated in the opposite direction, and the clamped rail clamping seat is separated from the ground rail, the rail clamping seat will gradually separate from the control tab, at this time the reset torsional spring will gradually recover to twist the control lever, so that it resets, and the large hole on the flow control ball faces upwards, so that the hydraulic oil flows smoothly, thereby accelerating the retraction stroke of the piston rod, shortening the time consumption and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the hydraulic oil cylinder with a buffer structure;

[0017] Figure 2 It is a schematic view of the rotating disc of the hydraulic oil cylinder with a buffer structure;

[0018] Figure 3 It is another view of the rotating disc of the hydraulic oil cylinder with a buffer structure;

[0019] Figure 4 It is a schematic view of the rail clamping seat of the hydraulic oil cylinder with a buffer structure;

[0020] Figure 5 It is a schematic view of the inner pipe of the hydraulic oil cylinder with a buffer structure;

[0021] Figure 6 It is an internal view of the inner pipe of the hydraulic oil cylinder with a buffer structure;

[0022] Figure 7 It is a schematic view of the flow control ball of the hydraulic oil cylinder with a buffer structure;

[0023] Figure 8 It is a use view of the hydraulic oil cylinder with a buffer structure.

[0024] In the figure: 1, the main body of the cylinder; 2, the push cap; 3, the connecting pipe; 4, the fixed frame; 5, the control top plate; 6, the synchronous frame; 7, the rotating disc; 8, the shaft frame; 9, the cylinder base; 10, the threaded rod; 11, the rail clamping seat; 12, the forward moving tooth plate; 13, the forward moving wheel; 14, the first shaft; 15, the forward moving ratchet wheel; 16, the pushing pawl; 17, the top pawl spring; 18, the connecting head; 19, the extension frame; 20, the T-shaped seat; 21, the control lever; 22, the flow control ball; 23, the small hole; 24, the large hole; 25, the forward moving gear; 26, the second shaft; 27, the threaded sleeve; 28, the limiting frame; 29, the hexagonal guide column; 30, the adaptive spring; 31, the wheel seat; 32, the positioning wheel; 33, the reset torsion spring; 34, the control tab; 35, the positioning cap; 36, the ground rail. DETAILED DESCRIPTION

[0025] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art.

[0026] As Figures 1-8 shown in the figure, a hydraulic cylinder with a buffer structure, comprising a cylinder main body 1, the lower end of the cylinder main body 1 is fixedly installed with a cylinder base 9, both ends of the cylinder base 9 are installed with forward moving wheels 13, the cylinder base 9 serves to bear the forward moving wheels 13, the front end of the cylinder base 9 is fixedly installed with a shaft frame 8 near the edge, the end of the shaft frame 8 is rotatably installed with a first shaft 14, the front end of the shaft frame 8 is rotatably installed with a second shaft 26 in the middle, the shaft frame 8 serves to bear the second shaft 26 and the first shaft 14, the second shaft 26 is coaxially arranged with the first shaft 14, the rear end of the first shaft 14 is fixed with one of the forward moving wheels 13, the front end of the first shaft 14 is coaxially embedded with a forward moving ratchet wheel 15, the rear end of the second shaft 26 is coaxially embedded with a rotating disc 7, the rear end edge of the rotating disc 7 is rotatably installed with a pushing pawl 16, the rotating disc 7 serves to bear the pushing pawl 16, the pushing pawl 16 is on the forward moving ratchet wheel 15, the cooperation between the forward moving ratchet wheel 15 and the pushing pawl 16 can keep the cylinder body of the cylinder main body 1 stationary when the piston rod is extended, and can make the cylinder body of the cylinder main body 1 move forward when the piston rod is retracted, the outer surface of the second shaft 26 is coaxially embedded with a forward moving gear 25, the lower part of the forward moving gear 25 is engaged with a forward moving tooth plate 12, the cooperation between the forward moving gear 25 and the forward moving tooth plate 12 serves to make the rotating disc 7 rotate, the forward moving tooth plate 12 is connected with the piston rod of the cylinder main body 1, the middle part of the cylinder base 9 is provided with a rail clamping piece, the oil port of the cylinder main body 1 is provided with a flow control piece, the end of the piston rod of the cylinder main body 1 is fixedly installed with a push cap 2, the push cap 2 serves to increase the contact area.

[0027] The lower end of the axle stand 8 is fixedly installed with a T-shaped seat 20, the front moving toothed plate 12 is slidingly installed on the outer surface of the T-shaped seat 20, the T-shaped seat 20 plays a guiding role on the front moving toothed plate 12, the end of the front moving toothed plate 12 is fixedly installed with the synchronous frame 6, the end of the synchronous frame 6 is fixed with the piston rod of the oil cylinder body 1, and the synchronous frame 6 plays a role of fixing the front moving toothed plate 12 and the piston rod together.

[0028] The rear end edge of the rotating disc 7 is fixedly installed with a top claw spring 17, the top claw spring 17 plays a role of allowing the pushing pawl 16 to always adhere to the front moving ratchet wheel 15, the end of the top claw spring 17 is fixedly installed with a connecting head 18, the connecting head 18 is rotationally connected with the pushing pawl 16, and the connecting head 18 plays a role of connecting the top claw spring 17 and the pushing pawl 16.

[0029] The rail clamping piece includes a threaded rod 10 which is rotatably installed through the middle of the cylinder seat 9, the two ends of the threaded rod 10 are symmetrically provided with threaded sleeves 27 which can move towards each other, the two ends of the threaded rod 10 are screwed with the threaded sleeves 27, the lower end of the threaded sleeve 27 is fixedly installed with a rail clamping seat 11, the two ends of the rail clamping seat 11 are elastically installed with positioning wheels 32, the threaded rod 10 is rotated to drive the two threaded sleeves 27 to move towards each other, thereby driving the two rail clamping seats 11 to move towards each other, when the positioning wheels 32 on the rail clamping seat 11 adhere to the ground rail 36, the threaded rod 10 is continuously rotated to allow the two rail clamping seats 11 to continuously move towards each other, at this time, the two rail clamping seats 11 can continuously move towards each other to clamp the ground rail 36 to fix the oil cylinder body 1.

[0030] The two sides of the threaded rod 10 are provided with limiting frames 28, the ends of the limiting frames 28 are fixed with the cylinder seat 9, the threaded sleeves 27 are slidingly installed on the outer surface of the limiting frame 28, the limiting frame 28 plays a role of preventing the threaded sleeve 27 from rotating, the two ends of the rail clamping seat 11 are slidingly installed with hexagonal guide columns 29, the ends of the hexagonal guide columns 29 are fixedly installed with wheel seats 31, the hexagonal guide columns 29 play a guiding role on the wheel seats 31, the positioning wheels 32 are installed in the wheel seats 31, the wheel seats 31 play a role of bearing the positioning wheels 32, the outer side of the hexagonal guide column 29 is wound with an adaptive spring 30, the two ends of the adaptive spring 30 are respectively fixed with the wheel seat 31 and the rail clamping seat 11, when the positioning wheels 32 adhere to the ground rail 36, the adaptive spring 30 will be deformed to allow the two rail clamping seats 11 to continuously move towards each other to clamp the ground rail 36 to fix the oil cylinder body 1.

[0031] The flow control piece comprises a connector 3 fixedly installed at the oil port of the oil cylinder body 1, and the end of the connector 3 is provided with external threads to communicate with the external oil pipe. This kind of communication mode is the prior art and has been widely used, so it is not described in detail here and is not shown in the figure. The connector 3 is internally fitted with a flow control ball 22, which accelerates and slows down the movement of the piston rod. The side of the flow control ball 22 extends a control rod 21, which penetrates out of the outer surface of the connector 3. The control rod 21 drives the flow control ball 22 to rotate. The control rod 21 is in rotational cooperation with the connector 3. The end of the control rod 21 is obliquely extended with a control tab 34. The upper end of one of the rail clamping seats 11 is symmetrically fixedly installed with two fixed frames 4. The end of the fixed frame 4 is inlaid with a control top plate 5. The fixed frame 4 fixes the control top plate 5. The end of the control top plate 5 is on the control tab 34. The control top plate 5 can move the control tab 34, thereby driving the control rod 21 to rotate.

[0032] The outer surface of the connector 3 extends an extension frame 19, the end of which is fixedly installed with a positioning cap 35. The extension frame 19 fixes the positioning cap 35. The outer surface of the control rod 21 and the outer surface of the connector 3 are provided with a return torsion spring 33. When the return torsion spring 33 gradually recovers the deformation to twist the control rod 21 and make it return, the positioning cap 35 will resist the control tab 34 to position the return angle of the control rod 21, thereby ensuring that after returning, the large hole 24 on the flow control ball 22 faces upward.

[0033] The upper and lower end faces of the flow control ball 22 are uniformly distributed with a plurality of small holes 23. The small holes 23 can increase the resistance of the hydraulic oil flow, thereby slowing down the extension stroke of the piston rod, so that it can stably push the goods. The front and rear ends of the flow control ball 22 are provided with a large hole 24. The large hole 24 can make the hydraulic oil flow smoothly, thereby accelerating the retraction stroke of the piston rod, shortening the time consumption, and improving the work efficiency.

[0034] When working, the oil cylinder body 1 is placed on the ground rail 36, at this time the forward wheel 13 is attached to the ground rail 36, then the threaded rod 10 is rotated to drive the two threaded sleeves 27 to move towards each other, thereby driving the two rail clamping seats 11 to move towards each other, when the positioning wheel 32 on the rail clamping seat 11 is attached to the ground rail 36, continue to rotate the threaded rod 10 to make the two rail clamping seats 11 continue to move towards each other, at this time the spring 30 is deformed to allow the two rail clamping seats 11 to continue to move towards each other to clamp the ground rail 36 to fix the oil cylinder body 1, in this process, the control top plate 5 will move synchronously with the rail clamping seat 11 to push the control tab 34 to rotate the control rod 21, thereby driving the control flow ball 22 to rotate in the connecting pipe 3, so that the small hole 23 on the control flow ball 22 faces up, then the hydraulic oil enters the connecting pipe 3 and flows into the oil cylinder body 1 through the small hole 23 on the control flow ball 22, thereby increasing the resistance of the hydraulic oil flow, thereby slowing down the extension stroke of the piston rod, so that the slowly extended piston rod pushes the goods on the ground rail 36 to move slowly and stably, in this process, the forward tooth plate 12 is driven by the piston rod to move synchronously to drive the forward gear 25 to rotate, thereby driving the pushing pawl 16 on the rotating disc 7 to rotate on the outer surface of the forward ratchet wheel 15, when a single pushing stroke is completed, the threaded rod 10 can be rotated in the opposite direction to make the clamped rail clamping seat 11 separate from the ground rail 36, at this time the rail clamping seat 11 drives the control top plate 5 to gradually separate from the control tab 34, at this time the reset torsional spring 33 gradually recovers the deformation to twist the control rod 21 to reset it, so that the large hole 24 on the control flow ball 22 faces up to make the hydraulic oil flow smoothly to speed up the return stroke of the piston rod, when the piston rod returns, the forward tooth plate 12 moves in the opposite direction, thereby driving the forward gear 25 to rotate in the opposite direction, at this time the pushing pawl 16 on the rotating disc 7 is on the forward ratchet wheel 15 to push the forward ratchet wheel 15 to rotate the first shaft 14, thereby driving the forward wheel 13 to roll on the ground rail 36 to make the cylinder body of the oil cylinder body 1 move forward, at this time the positioning wheel 32 rolls on both sides of the ground rail 36 to guide the oil cylinder body 1, when the cylinder body of the oil cylinder body 1 moves forward, the above steps can be repeated to clamp the rail clamping seat 11 on the ground rail 36 again and extend the piston rod to push the goods on the ground rail 36 again, thereby circulating.

[0035] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with a buffer structure, comprising a cylinder body (1), characterized in that: A cylinder seat (9) is fixedly installed at the lower end of the cylinder body (1). Both ends of the cylinder seat (9) are equipped with forward-moving wheels (13). A shaft bracket (8) is fixedly installed near the edge of the front end of the cylinder seat (9). A first shaft (14) is rotatably installed at the end of the shaft bracket (8). A second shaft (26) is rotatably installed through the middle of the front end of the shaft bracket (8). The second shaft (26) is coaxial with the first shaft (14). The rear end of the first shaft (14) is fixed to one of the forward-moving wheels (13). A forward-moving ratchet (15) is coaxially embedded at the front end of the first shaft (14). The second shaft (26)... The rear end of the cylinder body (1) is coaxially inlaid with a turntable (7), and a push pawl (16) is rotatably installed at the rear end edge of the turntable (7). The push pawl (16) rests on the forward ratchet (15). The outer surface of the second shaft (26) is coaxially inlaid with a forward gear (25). The lower part of the forward gear (25) meshes with a forward gear plate (12). The forward gear plate (12) is connected to the piston rod of the cylinder body (1). A rail clamp is provided in the middle of the cylinder seat (9). A flow control device is provided at the oil port of the cylinder body (1). A push cap (2) is fixedly installed at the end of the piston rod of the cylinder body (1). A T-shaped seat (20) is fixedly installed at the lower end of the shaft bracket (8), and the forward moving tooth plate (12) is slidably installed on the outer surface of the T-shaped seat (20). A synchronous frame (6) is fixedly installed at the end of the forward moving tooth plate (12), and the end of the synchronous frame (6) is fixed to the piston rod of the cylinder body (1). A top claw spring (17) is fixedly installed at the rear edge of the turntable (7), and a connector (18) is fixedly installed at the end of the top claw spring (17). The connector (18) is rotatably connected to the push pawl (16).

2. A hydraulic cylinder with a buffer structure according to claim 1, characterized in that: The rail clamping component includes a threaded rod (10) that is rotatably mounted through the middle of the cylinder seat (9). The threads at both ends of the threaded rod (10) are symmetrically arranged. Both ends of the threaded rod (10) are screwed with threaded sleeves (27). A rail clamping seat (11) is fixedly mounted at the lower end of the threaded sleeves (27). Both ends of the rail clamping seat (11) are elastically mounted with positioning wheels (32).

3. A hydraulic cylinder with a buffer structure according to claim 2, characterized in that: Both sides of the threaded rod (10) are provided with a limiting frame (28). The end of the limiting frame (28) is fixed to the cylinder seat (9). The threaded sleeve (27) is slidably installed on the outer surface of the limiting frame (28). Both ends of the rail clamp (11) are slidably installed with hexagonal guide posts (29). The end of the hexagonal guide post (29) is fixedly installed with a wheel seat (31). The positioning wheel (32) is installed inside the wheel seat (31). The outer side of the hexagonal guide post (29) is wound with an adaptation spring (30). The two ends of the adaptation spring (30) are fixed to the wheel seat (31) and the rail clamp (11) respectively.

4. A hydraulic cylinder with a buffer structure according to claim 2, characterized in that: The flow control component includes a pipe (3) fixedly installed at the oil port of the cylinder body (1). A flow control ball (22) is fitted inside the pipe (3). A control rod (21) extends from the side of the flow control ball (22). The control rod (21) passes through the outer surface of the pipe (3). The control rod (21) rotates with the pipe (3). A control lever (34) extends obliquely from the end of the control rod (21). Two fixing brackets (4) are symmetrically fixedly installed on the upper end of one of the clamping rail seats (11). A control top plate (5) is embedded through the end of the fixing bracket (4). The end of the control top plate (5) rests on the control lever (34).

5. A hydraulic cylinder with a buffer structure according to claim 4, characterized in that: An extension frame (19) extends from the outer surface of the connector (3), and a positioning cap (35) is fixedly installed at the end of the extension frame (19). A reset torsion spring (33) is provided between the outer surface of the control rod (21) and the outer surface of the connector (3).

6. A hydraulic cylinder with a buffer structure according to claim 4, characterized in that: The flow control ball (22) has multiple small holes (23) evenly distributed through its upper and lower end faces, and large holes (24) are opened through its front and rear ends.

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