Buffer type oil cylinder structure

Abstract

The utility model discloses a buffering type oil cylinder structure which comprises an oil cylinder body, a piston block is arranged in the oil cylinder body and divides an inner cavity of the oil cylinder body into a first oil chamber and a second oil chamber, one end of a piston rod is fixedly connected with the piston block, and an oil cylinder sealing cover seat is welded to the position of a sealing head of the oil cylinder body and connected with the piston rod in a penetrating mode through a sealing bearing. According to the technical scheme, when the oil cylinder conducts reset motion, oil enters the second connecting base, so that the oil pressure of the second oil chamber is increased, the piston block is pushed, the piston rod is driven to reset, at the moment, part oil enters the communicating base through the oil guide way, and the part oil enters the communicating base through the oil guide way; when the piston moves, the bulged buffering balloon is bulged to be in contact with the inner wall of the oil cylinder body, the contact area is increased, and then impact force can be buffered, so that the violent impact phenomenon cannot occur after the piston moves and resets, and oil cylinder parts are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to a buffer type oil cylinder structure and belongs to the technical field of oil cylinders. Background Art

[0002] The structure of the oil cylinder currently used is as follows: it includes a cylinder body, an upper end cover and a lower end cover are respectively arranged at both ends of the cylinder body, a piston and a piston rod are arranged in the cylinder body, and the working principle of the oil cylinder is: the hydraulic oil enters the lower oil chamber from the lower main oil hole, so that the oil pressure in the lower oil chamber increases, and the oil pressure pushes the piston and the piston rod to move upward, and the hydraulic oil in the upper oil chamber is discharged from the upper oil hole; conversely, the hydraulic oil enters from the upper oil hole, so that the oil pressure in the upper oil chamber increases, and the oil pressure pushes the piston and the piston rod to move downward, and the hydraulic oil in the lower oil chamber is discharged from the lower main oil hole, wherein in the process of the piston rod moving downward, the lower end of the piston rod extends into the piston hole of the lower end cover, and the hydraulic oil in the lower oil chamber enters the piston hole through the lower branch oil hole, and then is discharged from the lower main oil hole.

[0003] The piston rod of the oil cylinder of the prior art has a large impact force during the resetting movement and lacks the necessary buffering performance. Therefore, we design a buffer type oil cylinder structure. Utility Model Content

[0004] The purpose of the utility model is to provide a buffer type oil cylinder structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a buffer-type oil cylinder structure, including an oil cylinder body, an oil cylinder cover seat, a first connecting seat, a second connecting seat, a piston block and a piston rod, the piston block is arranged inside the oil cylinder body and divides the inner cavity of the oil cylinder body into a first oil chamber and a second oil chamber, one end of the piston rod is fixedly connected to the piston block, the oil cylinder cover seat is welded and arranged at the head of the oil cylinder body and is interlaced and connected with the piston rod through a sealing bearing, the first connecting seat and the second connecting seat are welded and arranged at the opening of the oil cylinder body and correspond to the first oil chamber and the second oil chamber respectively, an oil guiding hollow tube is arranged inside the piston block, both ends of the oil guiding hollow tube are provided with bulged buffer balloons, a connecting seat is arranged in the middle of the oil guiding hollow tube, one end of the connecting seat is provided with an oil guiding path, and the oil guiding path is connected to the second oil chamber.

[0006] In the above-mentioned buffer type oil cylinder structure, a sealing ring frame is arranged between the sealing inside of the oil cylinder body and the oil cylinder cover seat, and a blocking oil ring is arranged inside the sealing ring frame.

[0007] In the above-mentioned buffer type oil cylinder structure, an oil suction ring connected to the piston rod is arranged inside the blocking oil ring.

[0008] In the above-mentioned buffer type oil cylinder structure, a key shaft connecting sleeve is provided at one end of the piston rod located outside the oil cylinder body, and a mounting seat is provided at the end of the key shaft connecting sleeve.

[0009] In the above-mentioned buffer type oil cylinder structure, the top ends of the first connecting seat and the second connecting seat are both provided with flow regulating valves, and one end of the first connecting seat and one end of the second connecting seat are both provided with oil pipe connecting seats.

[0010] In the above-mentioned buffer type oil cylinder structure, the oil guide path is located at the side of the piston block and connected to the second oil chamber, and is not coaxial with the piston rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The buffer oil cylinder structure of the utility model is characterized in that an oil guiding hollow tube is arranged inside the piston block, bulging buffer balloons are arranged at both ends of the oil guiding hollow tube, a connecting seat is arranged in the middle of the oil guiding hollow tube, an oil guiding path is arranged at one end of the connecting seat, and the oil guiding path is connected with the second oil chamber. When the oil cylinder performs a reset movement, oil enters the second connecting seat to increase the oil pressure in the second oil chamber, pushing the piston block and driving the piston rod to reset. At this time, the local oil enters the connecting seat through the oil guiding path, so that the bulging buffer balloon bulges and contacts the inner wall of the oil cylinder body, increasing the contact area, and thus the impact force can be buffered, so that there will be no violent collision after the piston movement is reset, thereby avoiding damage to the oil cylinder parts; a sealing ring frame is arranged between the sealing inside of the oil cylinder body and the oil cylinder cover seat, an oil blocking ring is arranged inside the sealing ring frame, and an oil suction ring connected with the piston rod is arranged on the inner side of the oil blocking ring, which has good sealing and pressurization effects, thereby ensuring that leakage is prevented when the hydraulic oil is injected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the buffer type oil cylinder structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the cylinder body of the buffer type cylinder structure of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the sealing ring frame of the buffer type oil cylinder structure of the utility model.

[0016] In the figure: 1. Cylinder body; 2. Cylinder cover seat; 3. First connecting seat; 4. Second connecting seat; 5. Flow regulating valve; 6. Oil pipe connecting seat; 7. Key shaft connecting sleeve; 8. Installation; 9. First oil chamber; 10. Second oil chamber; 11. Piston block; 12. Oil guide hollow tube; 13. Bulb buffer balloon; 14. Connecting seat; 15. Oil guide path; 16. Piston rod; 17. Sealing ring frame; 18. Block oil ring; 19. Oil suction ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution for a buffer type oil cylinder structure:

[0019] Embodiment: The oil cylinder comprises an oil cylinder body 1, an oil cylinder cover seat 2, a first connecting seat 3, a second connecting seat 4, a piston block 11 and a piston rod 16. The piston block 11 is arranged inside the oil cylinder body 1 and divides the inner cavity of the oil cylinder body 1 into a first oil chamber 9 and a second oil chamber 10. One end of the piston rod 16 is fixedly connected to the piston block 11. The oil cylinder cover seat 2 is welded and arranged at the end of the oil cylinder body 1 and is interlaced and connected with the piston rod 16 through a sealing bearing. The first connecting seat 3 and the second connecting seat 4 are welded and arranged. It is arranged at the opening of the cylinder body 1 and corresponds to the first oil chamber 9 and the second oil chamber 10 respectively. An oil guiding hollow tube 12 is arranged inside the piston block 11. Both ends of the oil guiding hollow tube 12 are provided with bulging buffer balloons 13. A connecting seat 14 is arranged in the middle of the oil guiding hollow tube 12. An oil guiding path 15 is arranged at one end of the connecting seat 14. The oil guiding path 15 is connected with the second oil chamber 10; the oil guiding path 15 is located on the side of the piston block 11 and is connected with the second oil chamber 10, and is not coaxial with the piston rod 16.

[0020] The above-mentioned design: when the oil cylinder performs a reset movement, oil enters the second connecting seat 4, which increases the oil pressure in the second oil chamber 10, pushes the piston block 11 and drives the piston rod 16 to reset. At this time, the local oil enters the connecting seat 14 through the oil guide path 15, so that the bulging buffer balloon 13 bulges and contacts the inner wall of the cylinder body 1, increasing the contact area, and then the impact force can be buffered, so that there will be no violent impact after the piston movement is reset, avoiding damage to the cylinder components.

[0021] In this embodiment, if Figure 2 and Figure 3 As shown, in order to have a good sealing and pressurizing effect and to ensure that leakage is prevented when the hydraulic oil is injected, a sealing ring frame 17 is arranged between the sealing inside of the cylinder body 1 and the cylinder cover seat 2, and an oil blocking ring 18 is arranged inside the sealing ring frame 17; an oil suction ring 19 connected to the piston rod 16 is arranged on the inner side of the oil blocking ring 18.

[0022] In this embodiment, in order to facilitate connection to the moving parts, a key shaft connecting sleeve 7 is provided at one end of the piston rod 16 located outside the cylinder body 1, and a mounting seat 8 is provided at the end of the key shaft connecting sleeve 7.

[0023] In this embodiment, in order to facilitate the rapid and sealed connection of the hydraulic oil pipeline and adjust the flow of the incoming hydraulic oil, a flow regulating valve 5 is provided at the top of the first connecting seat 3 and the top of the second connecting seat 4, and an oil pipe connecting seat 6 is provided at one end of the first connecting seat 3 and one end of the second connecting seat 4.

[0024] Working principle: The oil pipe connecting seat 6 of the first connecting seat 3 and the second connecting seat 4 is used to connect the oil pipe of the hydraulic station. Under the power transmission of the hydraulic station, the hydraulic oil enters the first oil chamber 9 of the cylinder body 1 through the first connecting seat 3 (the second connecting seat 4 is blocked by the flow regulating valve 5), thereby pushing the piston block 11 and driving the piston rod 16 to extend and move in a straight line. When the cylinder performs a reset movement, the second connecting seat 4 (the first connecting seat 3 is blocked by the flow regulating valve 5 and no oil enters) enters oil, thereby increasing the oil pressure in the second oil chamber 10, pushing the piston block 11 and driving the piston rod 16 to reset. At this time, the local oil enters the connecting seat 14 through the oil guide path 15, so that the bulging buffer balloon 13 bulges and contacts the inner wall of the cylinder body 1, increasing the contact area, and thus the impact force can be buffered, so that there will be no violent collision after the piston movement is reset, thereby avoiding damage to the cylinder components.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A buffer type oil cylinder structure, comprising an oil cylinder body (1), an oil cylinder cover seat (2), a first connecting seat (3), a second connecting seat (4), a piston block (11) and a piston rod (16), wherein the piston block (11) is arranged inside the oil cylinder body (1) and divides the inner cavity of the oil cylinder body (1) into a first oil chamber (9) and a second oil chamber (10), one end of the piston rod (16) is fixedly connected to the piston block (11), the oil cylinder cover seat (2) is welded to the end of the oil cylinder body (1) and is connected to the piston rod (16) through a sealing bearing, the first connecting seat (3) and the second connecting seat (4) are welded to the opening of the oil cylinder body (1) and correspond to the first oil chamber (9) and the second oil chamber (10) respectively, and characterized in that: An oil-conducting hollow tube (12) is arranged inside the piston block (11), and bulging buffer balloons (13) are arranged at both ends of the oil-conducting hollow tube (12). A connecting seat (14) is arranged in the middle of the oil-conducting hollow tube (12), and an oil-conducting path (15) is arranged at one end of the connecting seat (14), and the oil-conducting path (15) is connected to the second oil chamber (10).

2. The buffer type oil cylinder structure according to claim 1, characterized in that: A sealing ring frame (17) is arranged between the sealing interior of the oil cylinder body (1) and the oil cylinder cover seat (2), and a blocking oil ring (18) is arranged inside the sealing ring frame (17).

3. The buffer type oil cylinder structure according to claim 2, characterized in that: An oil suction ring (19) connected to the piston rod (16) is arranged inside the blocking oil ring (18).

4. The buffer type oil cylinder structure according to claim 1, characterized in that: One end of the piston rod (16) located outside the oil cylinder body (1) is provided with a key shaft connecting sleeve (7), and the end of the key shaft connecting sleeve (7) is provided with a mounting seat (8).

5. The buffer type oil cylinder structure according to claim 1, characterized in that: A flow regulating valve (5) is provided at the top end of the first connecting seat (3) and the top end of the second connecting seat (4), and an oil pipe connecting seat (6) is provided at one end of the first connecting seat (3) and one end of the second connecting seat (4).

6. The buffer type oil cylinder structure according to claim 1, characterized in that: The oil guide path (15) is located on the side of the piston block (11) and is connected to the second oil chamber (10), and is not coaxial with the piston rod (16).

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