Cushion piston with oil hole

Abstract

The utility model discloses a buffer piston with an oil hole, which belongs to the technical field of buffer pistons. It mainly solves the problem in the prior art that after the buffer piston is used, hydraulic oil is squeezed to the other side under pressure, the buffer piston cannot be automatically reset, and it is difficult to continue the next buffering operation, which is not practical. The buffer piston comprises a piston cylinder body, a buffer piston body is slidably installed inside the piston cylinder body, a connecting rod is fixed to one end of the buffer piston body, a piston rod is fixedly connected to one end of the connecting rod, and one end of the piston rod extends outside the piston cylinder body, two throttling channels are penetrated on one side surface of the buffer piston body, and the throttling channels are curved, hydraulic oil is injected into the interior of the piston cylinder body, and an automatic reset component is arranged on the outer surface of one side of the piston cylinder body.

Description

Technical Field

[0001] The utility model relates to the technical field of buffer pistons, and more specifically, to a buffer piston with an oil hole. Background Art

[0002] The buffer piston is a commonly used part in the hydraulic buffer system. The buffer piston is usually arranged on one end of the piston rod in the cylinder body of the buffer cylinder. When the piston rod is subjected to external impact force, the piston rod drives the buffer piston to move. Since the cylinder body is filled with hydraulic oil, the buffer piston will squeeze the hydraulic oil when moving. Under the action of pressure, the hydraulic oil is squeezed from one side of the buffer piston to the other side through the throttle hole on the throttle ring, thereby absorbing the impact on the piston rod and realizing the buffering function.

[0003] However, there are various types of buffer pistons in the prior art. For example, utility model patent CN220551328U relates to a buffer piston with an oil hole. The utility model is provided with a buffer piston body, on which a plurality of spirally arranged buffer channels are provided, and an oil outlet hole is provided on the buffer piston body above the mating convex ring. A connecting rod is integrally formed at the first end of the buffer piston, and the end of the connecting rod is spherical. A spherical groove is provided at the end of the piston rod for mating with the spherical end of the connecting rod, and an oil inlet hole is provided at the end of the connecting rod. When the buffer piston body is connected to the piston rod end of the piston cylinder, the piston rod drives the buffer piston to move when the piston rod is subjected to external impact force. Since the cylinder body is filled with hydraulic oil, the buffer piston will squeeze the hydraulic oil when it moves, and the hydraulic oil is squeezed from the buffer channel to the other side under the action of pressure, thereby absorbing the impact on the piston rod and realizing the buffering function.

[0004] Although the buffer piston can absorb the impact and play a buffering role, after the buffer piston is used, the hydraulic oil is squeezed to the other side under the action of pressure, the piston cannot automatically reset, and it is difficult to continue the next buffering operation. It is not convenient to use. In order to avoid this phenomenon, it is necessary to design a buffer piston with an oil hole. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to achieve the above object, the utility model provides a buffer piston with an oil hole, which is achieved by the following specific technical means:

[0007] A buffer piston with an oil hole includes a piston cylinder body, a buffer piston body is slidably installed inside the piston cylinder body, a connecting rod is fixed to one end of the buffer piston body, one end of the connecting rod is fixedly connected to the piston rod, and one end of the piston rod extends out of the piston cylinder body, two throttling channels are penetrated through the surface of one side of the buffer piston body, and the throttling channels are curved, hydraulic oil is injected into the interior of the piston cylinder body, and an automatic reset component is arranged on the outer surface of one side of the piston cylinder body.

[0008] Preferably, the automatic reset assembly is composed of a connecting plate, connecting bolts, a fixed baffle, a first positioning ring, a second positioning ring and a compression spring. A connecting plate is fixed to the surface of the piston rod, and the connecting plate is ring-shaped. A fixed baffle is installed on one side surface of the connecting plate through a connecting bolt, and a first positioning ring is fixedly connected to one side surface of the fixed baffle.

[0009] Preferably, a second positioning ring is fixedly connected to an outer surface of one side of the piston cylinder body, a compression spring is arranged inside the second positioning ring, and the compression spring is fixed between the first positioning ring and the second positioning ring.

[0010] Preferably, two grooves are equidistantly arranged on the surface of the buffer piston body, and the grooves are annular in shape.

[0011] Preferably, two convex rings are equidistantly arranged on the surface of the buffer piston body, and sealing rings are sleeved inside the two grooves, and the sealing rings are used to seal the piston cylinder and the buffer piston body.

[0012] Preferably, the buffer piston body and the piston rod are both provided with mounting grooves, an oil delivery pipe and a diversion pipe are embedded in the mounting grooves, and the oil delivery pipe and the diversion pipe are interconnected, an oil inlet hole is provided at one end of the oil delivery pipe, and an oil outlet hole is provided at one end of the diversion pipe.

[0013] Preferably, a force bearing seat is threadedly mounted on one end of the piston rod, and the force bearing seat is fixed to one side of the fixed baffle.

[0014] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0015] When the piston rod is subjected to external impact force, the piston rod drives the buffer piston body to move. When the buffer piston body moves to one side, it squeezes the hydraulic oil. Under the action of pressure, the hydraulic oil is pressed from one side of the piston cylinder body through the throttling hole to the other side, so that the hydraulic oil absorbs the impact force of the piston rod and plays a buffering role. At the same time, the rebound performance of the compression spring is used to reset the squeezed compression spring and drive the fixed baffle to move. The piston rod is driven to move together through the fixed baffle, so that the hydraulic oil is squeezed to the other side of the piston cylinder body again, thereby automatically resetting the buffer piston, thereby continuing the buffering operation to facilitate the next impact, which is more practical, and the impacted piston rod can also be further buffered through the buffering elasticity of the compression spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the buffer piston body;

[0019] Figure 3 It is a partial schematic diagram of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure enlarged at A;

[0021] Figure 5 It is a schematic diagram of the structure of the oil pipeline and the diversion pipe.

[0022] In the figure: 1. piston cylinder; 2. buffer piston body; 3. piston rod; 4. connecting rod; 5. throttling channel; 6. connecting plate; 7. connecting bolt; 8. fixed baffle; 9. first positioning ring; 10. second positioning ring; 11. compression spring; 12. convex ring; 13. slot; 14. sealing ring; 15. mounting slot; 16. oil pipeline; 17. diverter pipe; 18. force seat. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0026] like Figure 1 , Figure 2 as well as Figure 3 As shown, it is a schematic diagram of the structure of the buffer piston with an oil hole in this embodiment. The buffer piston will squeeze the hydraulic oil when it moves. Under the action of pressure, the hydraulic oil is squeezed from one side of the buffer piston to the other side through the throttling hole, absorbing the impact on the piston rod 3 and realizing the buffering function. The buffer piston includes a piston cylinder 1, a buffer piston body 2 is slidably installed inside the piston cylinder 1, a connecting rod 4 is fixed to one end of the buffer piston body 2, and a piston rod 3 is fixedly connected to one end of the connecting rod 4, and one end of the piston rod 3 extends to the outside of the piston cylinder 1, and two throttling channels 5 are penetrated on one side surface of the buffer piston body 2, and the throttling channels 5 are curved, hydraulic oil is injected into the interior of the piston cylinder 1, a connecting plate 6 is fixed to the surface of the piston rod 3, and the connecting plate 6 is annular, and a fixed baffle 8 is installed on one side surface of the connecting plate 6 through a connecting bolt 7, and a first positioning ring 9 is fixedly connected to one side surface of the fixed baffle 8, and a second positioning ring 10 is fixedly connected to the outer surface of one side of the piston cylinder 1. A compression spring 11 is arranged inside, and the compression spring 11 is fixed between the first positioning ring 9 and the second positioning ring 10. When the piston rod 3 is subjected to external impact force, pressure is applied through the force bearing seat 18, so that the piston rod 3 drives the buffer piston body 2 to move, and the hydraulic oil injected into the piston cylinder 1 is used. When the buffer piston body 2 moves to one side, it will squeeze the hydraulic oil, and the hydraulic oil is pressed from one side of the piston cylinder 1 to the other side from the throttling channel 5, so that the hydraulic oil absorbs the impact force of the piston rod 3 and plays a buffering role; at the same time, the rebound performance of the compression spring 11 is used to reset the squeezed compression spring 11 and drive the fixed baffle 8 to move, and the piston rod 3 is driven to move together through the fixed baffle 8, so that the hydraulic oil is squeezed to the other side of the piston cylinder 1 again, thereby automatically resetting the buffer piston, so as to continue the buffering operation and prepare to receive the next impact, which is more practical, and the buffering elasticity of the compression spring 11 can also further buffer the impacted piston rod 3.

[0027] It is worth noting that the connecting plate 6, connecting bolts 7, fixed baffle 8, first positioning ring 9, second positioning ring 10 and compression spring 11 in this embodiment constitute an automatic reset assembly, which is used to automatically reset the piston rod 3 after buffering.

[0028] In addition, if Figure 4 As shown, in this embodiment, two grooves 13 are equidistantly provided on the surface of the buffer piston body 2, and the shape of the grooves 13 is annular, and two convex rings 12 are equidistantly provided on the surface of the buffer piston body 2. When assembling the buffer piston, two sealing rings 14 are inserted into the two grooves 13 on the surface of the buffer piston body 2 to achieve a sealing effect when the buffer piston body 2 moves.

[0029] It is worth noting that in this embodiment, the two slots 13 are both sleeved with sealing rings 14 , and the sealing rings 14 are used to seal the piston cylinder 1 and the buffer piston body 2 .

[0030] like Figure 2 and Figure 5 As shown, in this embodiment, the buffer piston body 2 and the piston rod 3 are both provided with a mounting groove 15, and an oil pipe 16 and a diverter pipe 17 are embedded in the mounting groove 15, and the oil pipe 16 and the diverter pipe 17 are interconnected. One end of the oil pipe 16 is provided with an oil inlet hole, and one end of the diverter pipe 17 is provided with an oil outlet hole. In order to ensure the stability of the buffer piston body 2 during movement and reduce wear, the oil pipe 16 and the diverter pipe 17 are used to guide the lubricating oil from the oil outlet hole into the slot 13, thereby performing lubrication protection.

[0031] like Figure 3 As shown, in this embodiment, a force bearing seat 18 is threadedly mounted on one end of the piston rod 3 , and the force bearing seat 18 is fixed to one side of the fixed baffle 8 .

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A buffer piston with an oil hole, comprising a piston cylinder (1), a buffer piston body (2) slidably mounted inside the piston cylinder (1), a connecting rod (4) fixed to one end of the buffer piston body (2), a piston rod (3) fixedly connected to one end of the connecting rod (4), and one end of the piston rod (3) extending outside the piston cylinder (1), characterized in that: Two throttling holes (5) are provided through one side surface of the buffer piston body (2), and the throttling holes (5) are curved. Hydraulic oil is injected into the interior of the piston cylinder (1). An automatic reset component is provided on one side outer surface of the piston cylinder (1). The automatic reset component comprises a connecting plate (6), a connecting bolt (7), a fixed baffle (8), a first positioning ring (9), a second positioning ring (10) and a compression spring (11). A connecting plate (6) is fixed to the surface of the piston rod (3), and the connecting plate (6) is annular. A fixed baffle (8) is installed on one side surface of the connecting plate (6) through a connecting bolt (7). The first positioning ring (9) is fixedly connected to one side surface of the fixed baffle (8). A second positioning ring (10) is fixedly connected to one side outer surface of the piston cylinder (1). A compression spring (11) is provided inside the second positioning ring (10), and the compression spring (11) is fixed between the first positioning ring (9) and the second positioning ring (10).

2. The buffer piston with oil hole according to claim 1, characterized in that: Two clamping grooves (13) are arranged at equal intervals on the surface of the buffer piston body (2), and the clamping grooves (13) are annular in shape.

3. The buffer piston with oil hole according to claim 1, characterized in that: Two convex rings (12) are equidistantly arranged on the surface of the buffer piston body (2), and sealing rings (14) are sleeved inside the two clamping grooves (13). The sealing rings (14) are used to seal the piston cylinder (1) and the buffer piston body (2).

4. The buffer piston with oil hole according to claim 1, characterized in that: The buffer piston body (2) and the piston rod (3) are both provided with mounting grooves (15), an oil delivery pipe (16) and a flow dividing pipe (17) are embedded in the mounting groove (15), and the oil delivery pipe (16) and the flow dividing pipe (17) are interconnected, an oil inlet hole is provided at one end of the oil delivery pipe (16), and an oil outlet hole is provided at one end of the flow dividing pipe (17).

5. The buffer piston with oil hole according to claim 1, characterized in that: A force bearing seat (18) is threadedly mounted on one end of the piston rod (3), and the force bearing seat (18) is fixed to one side of the fixed baffle (8).

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