Multi-section type buffering oil cylinder

Abstract

The utility model discloses a multi-section type buffering oil cylinder which comprises a cylinder body, a cavity is formed in the cylinder body, a piston is movably arranged on one side in the cylinder body, a buffering assembly is fixedly arranged at the position, close to the middle, in the cylinder body, a cavity is formed in the buffering assembly, a piston rod is fixedly arranged on one side of the piston, and a piston rod is fixedly arranged on the other side of the piston. Connecting frames are fixedly arranged at the top and the bottom of the interior of the buffering assembly, and abutting rods are fixedly arranged at the positions, close to the top and the bottom, of the two sides of the interior of the buffering assembly. According to the multi-section type buffering oil cylinder, by arranging the abutting rods, the connecting frames, the energy absorption springs and the arc-shaped flaps, when the multi-section type buffering oil cylinder is used, the multi-section type buffering oil cylinder has the multi-section buffering effect, punching force can be well buffered and absorbed, the good force unloading protection effect is improved for the cylinder body, the service life of the multi-section type buffering oil cylinder is prolonged, and convenience is brought to a user; the practicability of the device is improved, and the use requirements of users are met.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a multi-stage buffer oil cylinder. Background Technique

[0002] An oil cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it can eliminate the deceleration device, and there is no transmission gap, and the motion is stable. Therefore, it is widely used in the hydraulic systems of various machines. In the actual application of the oil cylinder, it is often necessary for the oil cylinder to perform deceleration buffering at the end of the push stroke to adapt to application scenarios such as closing doors and rigid body contact.

[0003] In the comparative document "A multi-stage buffer oil cylinder" with the patent number (CN219317317U), by setting the first oil hole, the second oil hole and the second transition section with different diameters, when the position of the piston changes, the flow rate of the pressure oil flowing out is changed, so as to achieve step-by-step buffering.

[0004] However, when the multi-stage buffer oil cylinder is in use, the buffering performance is poor, and it cannot play a good protective role, which brings inconvenience to the user and can no longer meet the user's usage requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-stage buffer oil cylinder to solve the problems put forward in the above background technique that when the multi-stage buffer oil cylinder is in use, the buffering performance is poor, it cannot play a good protective role, it brings inconvenience to the user, and it can no longer meet the user's usage requirements.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A multi-stage buffer oil cylinder, including a cylinder body, a cavity is opened inside the cylinder body, a piston is movably arranged on one side inside the cylinder body, a buffer assembly is fixedly arranged at a position close to the middle inside the cylinder body, a cavity is opened inside the buffer assembly, a piston rod is fixedly arranged on one side of the piston, connecting frames are fixedly arranged at the top and bottom positions inside the buffer assembly, abutting rods are fixedly arranged at the top and bottom positions on both sides inside the buffer assembly, energy-absorbing springs are fixedly arranged on one side of the two abutting rods facing each other, a through groove is circumferentially opened on one side of the piston, and four arc-shaped flaps are circumferentially arranged inside the through groove.

[0007] Further, an oil inlet pipe is communicated with one end of the cylinder body.

[0008] Further, one end of the piston rod sequentially penetrates through the buffer assembly and the cylinder body and extends to the outside of the cylinder body, and the piston rod is movably connected between the buffer assembly and the cylinder body.

[0009] Further, one side of each of the two abutting rods extends into the interior of the connecting frame and is movably connected to the connecting frame.

[0010] Further, one side of each of the two energy-absorbing springs is fixedly connected to the inner wall of the connecting frame.

[0011] Further, a plurality of the through grooves are provided, and the distance between every two through grooves is designed to be equal.

[0012] Further, the arc-shaped flap is made of rubber material, and the four arc-shaped flaps are in contact with each other. The surface of the arc-shaped flap in contact with the through groove is fixedly connected to the through groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For this multi-stage buffer oil cylinder, by providing the abutting rod, the connecting frame, the energy-absorbing spring and the arc-shaped flap, when the device is in use, it has the function of multi-stage buffering, can well buffer and absorb the impact force, provides good unloading protection for the cylinder body, extends the service life of the device, brings convenience to the user, improves the practicability of the device, and meets the use requirements of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a sectional view of the structure of the present utility model;

[0017] Figure 3 is a sectional view of the buffer assembly of the present utility model;

[0018] Figure 4 is a side view of the piston of the present utility model;

[0019] Figure 5 is Figure 3 a partial enlarged schematic diagram of A in

[0020] Figure 6 is a three-dimensional view of the arc-shaped flap of the present utility model.

[0021] In the figure: 1, cylinder body; 2, piston; 3, buffer assembly; 4, piston rod; 5, connecting frame; 6, abutting rod; 7, energy-absorbing spring; 8, through groove; 9, arc-shaped flap; 10, oil inlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described in detail below with reference to the drawings and through specific embodiments. The following embodiments are only descriptive and do not limit the protection scope of the present utility model.

[0023] Please refer toFigures 1-6 , the present utility model provides a technical solution: a multi-stage buffer oil cylinder, including a cylinder body 1, the cylinder body 1 is used to set corresponding components, a cavity is opened inside the cylinder body 1, a piston 2 is movably arranged on one side inside the cylinder body 1, the piston 2 plays a pushing role, a buffer component 3 is fixedly arranged at a position near the middle inside the cylinder body 1, the buffer component 3 is used to set corresponding components, a cavity is opened inside the buffer component 3, a piston rod 4 is fixedly arranged on one side of the piston 2, the piston rod 4 plays a role of moving up and down, connection frames 5 are fixedly arranged at the top and bottom positions inside the buffer component 3, the connection frames 5 are used to set corresponding components, abutting rods 6 are fixedly arranged at the top and bottom positions on both sides inside the buffer component 3, the abutting rods 6 can abut against energy-absorbing springs 7, energy-absorbing springs 7 are fixedly arranged on the opposite sides of the two abutting rods 6, the energy-absorbing springs 7 can be compressed to absorb energy, a through groove 8 is circumferentially opened on one side of the piston 2, the through groove 8 is used to set arc-shaped flaps 9, four arc-shaped flaps 9 are circumferentially arranged inside the through groove 8, and the arc-shaped flaps 9 can play a role of flow resistance buffering.

[0024] Furthermore, one end of the cylinder body 1 is communicated with an oil inlet pipe 10, wherein, the oil inlet pipe 10 plays a role of inlet oil.

[0025] Furthermore, one end of the piston rod 4 sequentially penetrates through the buffer component 3 and the cylinder body 1 and extends to the outside of the cylinder body 1, and the piston rod 4 is movably connected between the buffer component 3 and the cylinder body 1, wherein, the piston rod 4 can play a role of moving up and down.

[0026] Furthermore, the opposite sides of the two abutting rods 6 both extend into the inside of the connection frame 5 and are movably connected with the connection frame 5, wherein, the abutting rods 6 can drive the energy-absorbing springs 7 to compress and buffer.

[0027] Furthermore, the opposite sides of the two energy-absorbing springs 7 are both fixedly connected with the inner wall of the connection frame 5, wherein, the energy-absorbing springs 7 play a role of energy absorption.

[0028] Furthermore, the number of the through grooves 8 opened is several, and the distance between every two through grooves 8 is designed to be equal, wherein, the through grooves 8 are used to set the arc-shaped flaps 9.

[0029] Furthermore, the arc-shaped flaps 9 are made of rubber material, and the four arc-shaped flaps 9 are in contact with each other, and the surface of the arc-shaped flaps 9 in contact with the through groove 8 is fixedly connected with the through groove 8, wherein, the arc-shaped flaps 9 play a role of flow resistance buffering.

[0030] Working principle: When the piston rod 4 retracts, it will touch the buffer assembly 3 and drive the buffer assembly 3 to deform, thus transmitting the impact force to the buffer assembly 3. After the buffer assembly 3 deforms, it will drive the abutting rod 6 to move, and the movement of the abutting rod 6 will drive the energy-absorbing spring 7 to compress and buffer, buffering the impact force for a period. When the piston rod 4 retracts, it will drive the piston 2 to move. At this time, the hydraulic oil in the cylinder block 1 is in the state of returning oil, which will press against the arc-shaped flap 9 to close, reducing the flow rate of the hydraulic oil, thereby playing a role in secondary buffering.

[0031] It can be known from the above working process that:

[0032] For this multi-stage buffer oil cylinder, by setting the abutting rod 6, connecting frame 5, energy-absorbing spring 7 and arc-shaped flap 9, when the device is in use, it has the function of multi-stage buffering, can buffer and absorb the impact force well, provides good unloading protection for the cylinder block 1, extends the service life of the device, brings convenience to the user, improves the practicability of the device, and meets the user's usage requirements.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage buffer cylinder, comprising a cylinder body (1), characterized in that: The cylinder body (1) has a cavity formed inside, a piston (2) is movably provided on one side of the cylinder body (1), a buffer assembly (3) is fixedly provided at a middle position in the cylinder body (1), a cavity is formed inside the buffer assembly (3), a piston rod (4) is fixedly provided on one side of the piston (2), a connecting frame (5) is fixedly provided at the top and bottom positions in the buffer assembly (3), abutment rods (6) are fixedly provided at the top and bottom positions on both sides of the buffer assembly (3), energy absorbing springs (7) are fixedly provided on opposite sides of the two abutment rods (6), a through groove (8) is formed around one side of the piston (2), and four arc-shaped petals (9) are arranged around the inside of the through groove (8).

2. A multi-stage buffer cylinder according to claim 1, characterized in that: One end of the cylinder body (1) is connected to an oil inlet pipe (10).

3. The multi-stage buffer cylinder according to claim 1, characterized in that: One end of the piston rod (4) passes through the buffer assembly (3) and the cylinder body (1) in sequence and extends to the outside of the cylinder body (1), and the piston rod (4) is movably connected to the buffer assembly (3) and the cylinder body (1).

4. The multi-stage buffer cylinder according to claim 1, characterized in that: The opposite sides of the two support rods (6) extend into the interior of the connecting frame (5) and are movably connected to the connecting frame (5).

5. The multi-stage buffer cylinder according to claim 1, characterized in that: The opposite sides of the two energy absorbing springs (7) are fixedly connected to the inner wall of the connecting frame (5).

6. The multi-stage buffer cylinder according to claim 1, characterized in that: The number of through slots (8) is several, and every two through slots (8) are designed to be equidistant from each other.

7. The multi-stage buffer cylinder according to claim 1, characterized in that: The arc-shaped petals (9) are made of rubber material, and the four arc-shaped petals (9) are in contact with each other, and the side of the arc-shaped petals (9) in contact with the through groove (8) is fixedly connected to the through groove (8).

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