Universal pin type inflation tool

Abstract

The utility model is applicable to the technical field of shock absorbers, and provides a universal contact pin type inflating tool, which is used for inflating an oil cylinder and a piston rod and comprises a clamping tool, an inflating air chamber and an inflating pressure head, the inflating air chamber is mounted on the clamping tool, the inflating pressure head is pressed on the piston rod in a sleeving manner, and the inflating air chamber is a flexible inflating block; the flexible inflation block, the inflation pressure head, the oil cylinder and the piston rod are matched, clamped and sealed to form an inflation space, so that the inflation condition is met, and inflation operation of the piston rod and the oil cylinder is achieved. According to the universal contact pin type inflation tool, on one hand, the inflation efficiency and the inflation effect can be greatly improved, on the other hand, sealing inflation of piston rods and oil cylinders of different sizes can be effectively achieved through the action of the flexible inflation block, meanwhile, the piston rods of different diameters are pressed in a sleeving mode through the action of the inflation pressure head, and the inflation efficiency is greatly improved. Sealing and air inflation of the piston rod with the step and the oil cylinder can be achieved, and therefore the air inflation universality is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of vibration damper technology, and in particular relates to a universal pin-type air-filling fixture. Background Technology

[0002] Automotive suspension shock absorbers are automotive components that connect the chassis and body of a car to reduce vehicle vibration. They are important parts of the suspension and affect the overall ride comfort and handling stability of the vehicle.

[0003] With the development of the shock absorber industry, the types of shock absorbers are also gradually increasing. When inflating the piston rod, the existing pin-type inflation fixtures use two opposing semi-circular air blocks to clamp the piston rod in the middle to achieve a seal, and then allow the air needle to be inserted into the piston rod through the semi-circular air blocks to perform the inflation operation.

[0004] However, existing pin-type inflation fixtures cannot inflate products with stepped piston rods, and even for conventional shock absorbers, special fixtures are required depending on the piston rod diameter, resulting in waste of time and cost. Therefore, there is an urgent need for a universal pin-type inflation fixture. Utility Model Content

[0005] This utility model provides a universal pin-type inflation tool, which aims to solve the problem that existing pin-type inflation tools cannot inflate products with stepped piston rods.

[0006] This invention is implemented as follows: a universal pin-type inflation fixture for inflating hydraulic cylinders and piston rods includes a clamping fixture, an inflation chamber, and an inflation head.

[0007] The inflation chamber is installed on the clamping fixture, the inflation head is pressed onto the piston rod, and the inflation chamber is a flexible inflation block;

[0008] The flexible inflatable block, the inflatable head, the oil cylinder, and the piston rod cooperate to clamp and seal each other to form an inflation space.

[0009] Optionally, the diameter of the inflation head is the same as the outer diameter of the cylinder, and the inflation head has a chamfered inner hole with a diameter larger than that of the piston rod.

[0010] Optionally, the flexible inflatable block is made of flexible polyurethane material, and the lower end of the flexible inflatable block is interference-fitted with the hydraulic cylinder.

[0011] Optionally, the inflation chamber and the inflation head are the same size, and the upper end of the flexible inflation block is interference-fitted with the inflation head.

[0012] Optionally, the flexible inflatable block has a U-shaped structure, and the inner wall of the U-shaped structure is provided with air needle holes, which are used for sealing connection with air needles.

[0013] Optionally, the tooling further includes a sealing block, which and the flexible inflatable block are respectively disposed on both sides of the oil cylinder and the piston rod, and are clamped and sealed with the inflation head, oil cylinder and piston rod to form an inflation space.

[0014] The beneficial effects achieved by this utility model are due to the fact that it provides a universal pin-type inflation fixture for inflating hydraulic cylinders and piston rods. The fixture includes a clamping fixture, an inflation chamber, and an inflation head. The inflation chamber is installed on the clamping fixture, and the inflation head is pressed onto the piston rod. The inflation chamber is a flexible inflation block. The flexible inflation block, the inflation head, the hydraulic cylinder, and the piston rod cooperate to clamp and seal each other to form an inflation space, thereby achieving the inflation conditions and realizing the inflation operation of the piston rod and hydraulic cylinder. Because the inflation chamber of this application is a flexible inflation block, which, in conjunction with the inflation head, enhances the coverage of the piston rod and cylinder by the flexible inflation block, thereby effectively increasing their sealing performance and greatly improving inflation efficiency and effect. Moreover, the flexible inflation block can effectively achieve sealed inflation of piston rods and cylinders of different sizes. At the same time, due to the action of the inflation head, piston rods of different diameters are compressed, which can achieve sealing and inflation of stepped piston rods and cylinders, thereby effectively improving inflation versatility. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the usage status of the universal pin-type inflatable tooling provided in this application.

[0018] Figure 2 This is a schematic diagram of the inflation head provided in this application.

[0019] Figure 3 This is a schematic diagram of the structure of the inflatable chamber provided in this application.

[0020] Figure 4 This is a partial structural diagram of the clamping fixture provided in this application.

[0021] Figure label:

[0022] 1-Clamping fixture, 2-Inflation chamber, 3-Inflation head, 4-Oil cylinder, 5-Piston rod, 21-Air needle hole, 31-Chamfered inner hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] To effectively illustrate the embodiments of this utility model, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] like Figures 1 to 4 The relevant schematic diagrams provide a detailed description of the universal pin-type inflatable tooling disclosed in this application. For example... Figure 1 As shown, this application discloses a universal pin-type inflation fixture for inflating a hydraulic cylinder 4 and a piston rod 5. The universal pin-type inflation fixture includes a clamping fixture 1, an inflation chamber 2, and an inflation head 3. The inflation chamber 2 is mounted on the clamping fixture 1, and the inflation head 3 is pressed onto the piston rod 5. The inflation chamber 2 is a flexible inflation block. The flexible inflation block, the inflation head 3, the hydraulic cylinder 4, and the piston rod 5 cooperate with each other to clamp and seal, forming an inflation space.

[0026] Also refer to Figures 2 to 3 As shown, the diameter of the inflation head 3 is the same as the outer diameter of the cylinder 4. The inflation head 3 has a chamfered inner hole 31, the diameter of which is larger than the diameter of the piston rod 5. This allows the piston rod 5 to be inserted into the chamfered inner hole 31, and the inflation head 3 applies downward pressure to the piston rod 5, thus bringing the piston rod 5 and the cylinder 4 closer together. Because the flexible inflatable block is made of flexible polyurethane, the inflation chamber 2 has the characteristics of soft rubber. During use, the flexible inflatable block has a U-shaped structure. The lower end of the flexible inflatable block is interference-fitted with the cylinder 4. Since the inflation chamber 2 and the inflation head 3 are the same size, the upper end of the flexible inflatable block is interference-fitted with the inflation head 3. That is, as... Figure 1 As shown, when the inflation head 3 presses against the piston rod 5, the outer diameters of the inflation head 3 and the cylinder 4 are the same, and they can simultaneously make close contact with the upper and lower ends of the flexible inflation block. Under the action of the clamping fixture 1, the upper and lower ends of the flexible inflation block are squeezed to achieve an interference fit with the outer walls of the inflation head 3 and the cylinder 4, respectively. Thus, under the action of the sealing block (not shown in the figure), a sealed space is formed between the flexible inflation block, the sealing block, the inflation head 3, the cylinder 4 and the piston rod 5, which facilitates the inflation operation of the piston rod 5 and the cylinder 4.

[0027] In the specific implementation process, such as Figure 3As shown, the inner wall of the U-shaped structure of the flexible inflatable block is provided with an air needle hole 21. The air needle hole 21 is used for sealing connection with the air needle. That is, the air needle can be preset and sealed at this position, so that the air needle enters the sealed space to perform the inflation operation on the piston rod 5 and the oil cylinder 4.

[0028] Of course, in the actual implementation process, the sealing block and the flexible air-filled block are respectively set on both sides of the oil cylinder 4 and the piston rod 5 (e.g. Figure 1 The opposite side of the flexible inflatable block (not shown in the attached figure) allows the sealing block to clamp and seal with the inflation head, cylinder, and piston rod, forming an inflation space. Specifically, the sealing block can be mounted on the frame of the inflation equipment. This sealing block has the same structure as the flexible inflatable block, but the end of the sealing block away from the piston rod 5 and cylinder 4 is a sealed structure, thus achieving the purpose of forming a sealed space with the flexible inflatable block.

[0029] By adopting the universal pin-type inflation fixture provided in this application embodiment, since an inflation head 3 with the same outer diameter as the cylinder 4 is used, and the inflation head 3 is provided with a chamfered inner hole 31 and is sleeved on the piston rod 5, and is provided with a U-shaped inflation chamber 2, and the inflation chamber 2 is a flexible inflation block, the flexible inflation block, sealing block, and inflation head 3 form a sealed inflation space for the cylinder 4 and piston rod 5. On the one hand, it can effectively ensure inflation efficiency and inflation effect. On the other hand, due to the action of the inflation head, it can sleeve and press piston rods of different diameters, and can achieve sealing and inflation of stepped piston rods and cylinders, thereby effectively improving the inflation versatility.

[0030] In the specific implementation process, it is also possible to refer to, for example Figure 4 As shown, the clamping fixture 1 is mainly used to clamp and fix the inflation chamber 2. The clamping fixture 1 is also used to drive the inflation chamber 2 forward and backward to inflate the hydraulic cylinder 4 and piston rod 5. Simultaneously, the clamping fixture 1 is connected to the inflation cylinder, thereby achieving a restart operation through the inflation needle. The specific structure of the clamping fixture 1 is not described in detail here; please refer to relevant descriptions in the prior art.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A universal pin-type inflation fixture for inflating hydraulic cylinders and piston rods, characterized in that, Includes clamping fixtures, an inflation chamber, and an inflation head, among which, The inflation chamber is installed on the clamping fixture, the inflation head is pressed onto the piston rod, and the inflation chamber is a flexible inflation block; The flexible inflatable block, the inflatable head, the oil cylinder, and the piston rod cooperate to clamp and seal each other to form an inflation space.

2. The universal pin-type inflatable fixture as described in claim 1, characterized in that, The diameter of the inflation head is the same as the outer diameter of the oil cylinder, and the inflation head has a chamfered inner hole with a diameter larger than that of the piston rod.

3. The universal pin-type inflatable fixture as described in claim 1, characterized in that, The flexible inflatable block is made of flexible polyurethane material, and the lower end of the flexible inflatable block is interference-fitted with the oil cylinder.

4. The universal pin-type inflatable fixture as described in claim 3, characterized in that, The inflation chamber and the inflation head are the same size, and the upper end of the flexible inflation block is interference-fitted with the inflation head.

5. The universal pin-type inflatable fixture as described in claim 1, characterized in that, The flexible inflatable block has a U-shaped structure, and the inner wall of the U-shaped structure is provided with air needle holes, which are used for sealing connection with air needles.

6. The universal pin-type inflatable fixture as described in claim 1, characterized in that, The tooling also includes a sealing block, which and the flexible inflatable block are respectively disposed on both sides of the oil cylinder and the piston rod, and are clamped and sealed with the inflation head, oil cylinder and piston rod to form an inflation space.

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