A gas-liquid damper with flexible assembly of components

Abstract

The utility model discloses a kind of gas-liquid buffers that can be supplied component flexible assembly, including outer cylinder and inner cylinder, the outer cylinder one end is open end, inside is equipped with the guide rod of along extension setting along its axial direction, inner cylinder one end is inserted into outer cylinder from the open end of outer cylinder, other end is located at the outside of outer cylinder, the inner cylinder is also equipped with the insulating piston of along its axial movement, the inner cylinder end portion is threadedly connected with guide seat, guide seat is immediately with insulating piston in initial state.This utility model designs guide seat into the mode of threaded assembly with inner cylinder, can be assembled quickly, simultaneously, guide rod is placed into first from outer cylinder side and is inserted into inner cylinder assembly, the position of guide rod can be initially positioned while assembling.Secondly, design rigid material and the gap of retaining ring at annular, so that it can be embedded in inner cylinder assembly at the same time, without losing the rigid support effect of guide seat.

Description

Technical Field

[0001] This utility model relates to the field of buffer device technology, specifically a gas-liquid buffer that allows for flexible assembly of components. Background Technology

[0002] With the continuous advancement of industrial technology, mechanical equipment is developing towards greater carrying capacity and higher operating speeds, placing new demands on the energy absorption and maximum impact force withstand capabilities of buffers. Therefore, buffer devices for ensuring the safety of large mechanical equipment are facing a new challenge: how to safely and smoothly bring colliding machinery to a stop. Currently available hydraulic buffers dissipate impact energy through the compression and reciprocating movement of hydraulic oil between different buffer chambers. However, due to limitations in materials and structure, hydraulic buffers are prone to internal piston misalignment under conditions of extremely high energy absorption and extremely high pressure impacts.

[0003] Therefore, by setting a guide seat with a guide hole and a guide rod with a flow guide platform, an annular impact flow is formed in the initial stage, preventing the internal piston from being damaged by uneven hydraulic pressure at the moment of pressure. However, because of the addition of the conical flow guide platform, the assembly method, corresponding position, and structural shape need to be designed separately to achieve the assembly of the above structure.

[0004] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a gas-liquid buffer that allows for flexible assembly of components, thus solving the problems mentioned in the background section.

[0006] Technical solution To achieve the above objectives, this utility model is implemented through the following technical solution: a gas-liquid damper that allows for flexible assembly of components, comprising an outer cylinder and an inner cylinder. One end of the outer cylinder is an open end, and a guide rod extending axially is provided inside. One end of the inner cylinder is inserted into the outer cylinder from the open end of the outer cylinder, and the other end is located outside the outer cylinder. An isolation piston that moves axially is also provided inside the inner cylinder. A guide seat is threadedly connected to the end of the inner cylinder. In the initial state, the guide seat is close to the isolation piston. After the guide rod is inserted into the outer cylinder, the guide hole in the middle of the guide seat is aligned with the guide rod for assembly. The inner side of the guide seat is abutted and limited by an annular retaining ring, which is fitted into the inner wall of the end of the inner cylinder.

[0007] Preferably, the inner cylinder has an annular groove at its end, and the groove is connected to the rear end of the assembled guide seat. The retaining ring is then embedded in the groove after assembly. The retaining ring is made of a rigid material, allowing it to be inserted into the inner cylinder and then embedded in the groove.

[0008] Preferably, the inner diameter of the retaining ring is smaller than the outer diameter of the guide seat, and the outer diameter of the retaining ring 9 is larger than the outer diameter of the guide seat 7 and smaller than the inner diameter of the slot 6.

[0009] Preferably, the retaining ring has a notch at any point and through holes are provided at the two independent ends of the notch.

[0010] Preferably, the outer cylinder body forms an opening at the end away from the inner cylinder body, and is sealed by a cover. The sealing cover has a through groove in the middle, and the guide rod passes through the through groove to its outside and is connected and fixed by a fastening head. Multiple circumferentially arranged sealing rings are added in the through groove.

[0011] The internal structure assembly method of the gas-liquid buffer is as follows: Step 1: First, place the guide rod horizontally into the outer cylinder. At this time, align the guide hole in the middle of the guide seat with the guide rod and insert it. Then, move it to the inner cylinder and tighten it. Step 2: Use a tool to retract the two independent ends of the retaining ring inwards, and at the same time move the retaining ring into the inner cylinder to the slot. Release the tool to relieve the force, so that the retaining ring is embedded in the slot to fasten the guide seat. At this time, the position of the guide rod is also roughly limited. Step 3: Finally, cover the opening of the outer cylinder with the sealing cap, and fix the guide rod at the through point with the fastening head to complete the assembly. Beneficial effects

[0012] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: This utility model provides a gas-liquid damper that allows for flexible assembly of components. The guide seat is designed to be threaded into the inner cylinder, enabling rapid assembly. Simultaneously, the guide rod is first inserted, then passed through the outer cylinder side and inserted into the inner cylinder assembly, allowing for initial positioning of the guide rod during assembly. Furthermore, the design incorporates a rigid material and a retaining ring with a notch at the annular portion, ensuring that the guide seat receives adequate rigid support while being embedded into the inner cylinder assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the non-loaded structure of this utility model; Figure 2 This is a disassembly diagram of the present invention; Figure 3 This is a schematic diagram of the retaining ring structure of this utility model.

[0014] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Guide rod; 4. Isolation piston; 5. Internal thread; 6. Slot; 7. Guide seat; 8. External thread; 9. Retaining ring; 10. Connector; 11. Sealing cap; 12. Fastening head; 13. Through groove; 14. Flow guide. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown: A gas-liquid damper with flexible component assembly includes an outer cylinder 1 and an inner cylinder 2. One end of the outer cylinder 1 is open, and a guide rod 3 extending axially is provided inside. A flow guide platform 14 is fixed to the guide rod 3 near the open end of the outer cylinder 1. One end of the inner cylinder 2 is inserted into the outer cylinder 1 from the open end, and the other end is located outside the outer cylinder 1. A guide seat 7 is fixed to the inserted end of the inner cylinder 2. The inner cylinder 2 is sleeved on the flow guide platform 14 and the guide rod 3 through the guide seat 7, and the inner cylinder 2 can move along the guide rod 3. An isolation piston 4 that moves axially is also provided inside the inner cylinder 2. The inner wall of the inner cylinder 2 and the isolation piston 4 form a nitrogen chamber for holding nitrogen gas, and the inner wall of the outer cylinder 1 and the guide seat 7 form an oil chamber for holding hydraulic oil. During the movement of the inner cylinder 2 along the guide rod 3, the gap between the inner wall of the inner cylinder 2, the guide seat 7, and the isolation piston 4 forms a dynamic oil chamber. The guide seat 7 is provided with a guide hole. The inner diameter of the guide hole is larger than the outer diameter of the guide rod 3 and smaller than the outer diameter of the guide platform 14, forming an annular gap between the guide rod 3 and the guide hole.

[0017] like Figure 2 As shown, the inner cylinder 2 and the guide seat 7 are fastened together by screwing on a suitable thread, and screwed to the side close to the isolating piston 4, so that the guide hole is adjacent to and directly facing the isolating piston 4. Due to the setting of the guide platform 14 on the guide rod 3, the guide seat 7 can only be inserted into the outer cylinder 1 before the guide rod 3 is pre-placed and then inserted from the opposite rear side of the guide rod 3; otherwise, the assembly cannot be achieved due to the size problem of the front end of the guide rod 3.

[0018] Secondly, since the guide seat 7 is fastened with bolts, it is prone to cylinder dislodgement (the threaded connection can easily come loose) after repeated impacts from the oil pressure inside the cylinder during use. Therefore, a limiting device is required. Specifically, in this embodiment, an annular groove 6 is opened at the end of the inner cylinder 2, and an annular retaining ring 9 is inserted into the annular groove 6. The retaining ring 9, which is fixed in place, can provide a tight pressure to the guide seat 7 to prevent it from loosening.

[0019] Since the retaining ring 9 needs to provide support to the guide seat 7, it must be made of rigid material. The inner diameter of the retaining ring 9 is smaller than the outer diameter of the guide seat 7, while the outer diameter of the retaining ring 9 is larger than the outer diameter of the guide seat 7 but smaller than the inner diameter of the slot 6. This ensures proper clamping support for the support seat. Secondly, the retaining ring 9 needs to undergo a certain degree of compression deformation before being inserted into the annular slot 6, which cannot be achieved using a rigid material. Therefore, a notch can be left in the annular portion of the retaining ring 9, and through holes can be made at both ends of the notch. This allows it to be slightly retracted inwards before being inserted into the annular slot 6 using a tool, enabling it to be inserted into the inner cylinder 2 until it is fully embedded in the slot 6.

[0020] The outer cylinder 1 has an open end away from the inner cylinder 2, which is sealed by a sealing cap 11 (the sealing cap 11 can be welded to the outer cylinder 1 later). A through groove 13 is provided in the middle of the sealing cap 11, and the guide rod 3 passes through the through groove 13 to its outside and is connected and fixed by a fastening head 12 (similar to bolt fastening). To prevent hydraulic oil leakage at the guide rod 3 and the through groove 13, multiple circumferentially arranged sealing rings can be added in the through groove 13.

[0021] The assembly process of the sealing cover 11 involves tightening it with threads on the outer periphery to pre-fix it inside the port of the outer cylinder 1, and then welding it to achieve fixation.

[0022] The specific assembly process is as follows: (1) First, place the guide rod 3 horizontally into one side of the inner cylinder 2. At this time, align the guide hole in the middle of the guide seat 7 with the guide rod 3 and insert it axially. Move it to the end of the inner cylinder 2 and screw it in until it is secure. (2) Then, use a tool to pull the two independent ends of the retaining ring 9 inward and radially shrink it. At the same time, move the retaining ring 9 into the inner cylinder 2 to the slot 6 and release the tool to relieve the force. This allows the retaining ring 9 to be embedded in the slot 6 to secure the guide seat 7. At this time, the position of the guide rod 3 is also roughly limited. At this time, the guide seat 7 and the guide rod 3 are fixedly assembled on the inner cylinder 2. (3) Then, screw the sealing cover 11 into the opening of the outer cylinder 1 and weld it in place. Finally, pass the connector at the end of the guide rod 3 through the sealing cover 11 and fix it with the thread of the fastening head 12 on the outside to achieve assembly.

[0023] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A gas-liquid damper for flexible assembly of components, comprising an outer cylinder and an inner cylinder, wherein one end of the outer cylinder is open and a guide rod extending axially therein is provided, one end of the inner cylinder is inserted into the outer cylinder from the open end of the outer cylinder, and the other end is located outside the outer cylinder, and an isolation piston that moves axially within the inner cylinder is also provided, characterized in that: The inner cylinder is threaded to a guide seat at its end. In the non-load state, the guide seat is close to the isolation piston. After the guide rod is inserted into the outer cylinder, the guide seat has a guide hole in the middle that is aligned with the guide rod for initial assembly. The inner side of the guide seat is abutted and limited by an annular retaining ring, which is fitted into the inner wall of the end of the inner cylinder.

2. A gas-liquid buffer with flexible component assembly according to claim 1, characterized in that: The inner cylinder has an annular groove at its end, and the groove is connected to the rear end of the assembled guide seat. The retaining ring is then embedded in the groove after assembly.

3. A gas-liquid buffer with flexible component assembly according to claim 2, characterized in that: The inner diameter of the retaining ring is smaller than the outer diameter of the guide seat, and the outer diameter of the retaining ring is larger than the outer diameter of the guide seat but smaller than the inner diameter of the slot.

4. A gas-liquid buffer with flexible component assembly according to claim 2, characterized in that: The retaining ring is made of a rigid material.

5. A gas-liquid buffer with flexible component assembly according to claim 2, characterized in that: The retaining ring has a notch at any point and through holes at the two independent ends of the notch.

6. A gas-liquid buffer with flexible component assembly according to any one of claims 1-5, characterized in that: The outer cylinder body forms an opening at the end away from the inner cylinder body, and is sealed by a cover. A through groove is provided in the middle of the sealing cover, and a guide rod passes through the through groove to its outside and is connected and fixed by a fastening head. Multiple circumferentially arranged sealing rings are added in the through groove.

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