Buffer plunger mounting structure for hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to a buffer plunger mounting structure for a hydraulic cylinder, a first end of a buffer plunger is mounted in a mounting hole of a piston rod, a first through hole is formed in the first end of the buffer plunger, a second through hole is formed in the piston rod, and the first through hole is communicated with the second through hole. The center line of the first through hole coincides with the center line of the second through hole, and fixing pieces are arranged in the first through hole and the second through hole. The buffer plunger can be fixedly mounted, dismounted and taken out, the buffer plunger is not prone to falling off in the working process of the hydraulic cylinder, and the quality and the service life of the hydraulic cylinder are guaranteed. Meanwhile, machining is easy, and installation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, and particularly relates to a buffer plunger installation structure for a hydraulic cylinder. Background Technique

[0002] A buffer plunger is a component used in a hydraulic system, mainly used to absorb and mitigate pressure shocks and fluctuations in the hydraulic system. The buffer plunger is usually installed at the outlet end of a hydraulic cylinder or a hydraulic motor to reduce pressure fluctuations caused by rapid commutation or load changes. At the same time, the buffer plunger also has the functions of reducing noise, improving system stability, and extending the service life of the equipment.

[0003] The buffer plunger is usually installed on the piston rod. The existing buffer plunger is installed by using a circlip. As Figure 1-2 shown, by processing grooves on the buffer plunger 1 and in the installation hole 26 of the piston rod 2, first assemble the open circlip into the groove of the buffer plunger, and then assemble the buffer plunger equipped with the open circlip into the installation hole of the piston rod. The open circlip is snapped into the groove in the installation hole to realize the installation of the buffer plunger. However, the existing installation method has the following problems: (1) After the buffer plunger is installed, the circlip is snap-fitted and fixed, resulting in the buffer plunger being unable to be disassembled and taken out; (2) During the operation of the hydraulic cylinder, the circlip is easily detached, causing the buffer plunger to fall into the hydraulic cylinder, resulting in damage and extrusion to the inner wall of the hydraulic cylinder, and scrapping the hydraulic cylinder; (3) The dimensions of the circlip and the groove are required to be strict, and the actual processing accuracy is not easy to control, there are quality hazards; (4) When the buffer plunger equipped with the circlip is installed into the installation hole, the assembly is difficult. Content of the Utility Model

[0004] In order to solve the above technical problems existing in the prior art, the utility model provides a buffer plunger installation structure for a hydraulic cylinder.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The utility model provides a buffer plunger installation structure for a hydraulic cylinder. The first end of the buffer plunger is installed in the installation hole of the piston rod. A through hole one is opened at the first end of the buffer plunger, a through hole two is opened on the piston rod, the center lines of the through hole one and the through hole two coincide, and a fixing member is arranged in the through hole one and the through hole two.

[0007] By adopting the above technical solution, the fixed installation and disassembly of the buffer plunger can be realized, and during the operation of the hydraulic cylinder, the buffer plunger is not easily detached, ensuring the quality and service life of the hydraulic cylinder; at the same time, the processing is simple and the installation is easy.

[0008] On the basis of the above technical solution, the utility model can also make the following technical improvements:

[0009] Further, the first through hole penetrates through the buffer plunger.

[0010] The beneficial effect of adopting the above further technical solution is: to improve the structural stability and ensure the installation reliability.

[0011] Further, one end of the second through hole is an open end, and the other end is a blind end.

[0012] Further, a magnetic member is also provided on the piston rod.

[0013] Further, a groove is provided at the blind end of the second through hole, and the magnetic member is arranged in the groove.

[0014] Further, a third through hole is provided on the piston rod, the center line of the third through hole coincides with the center line of the second through hole, and the third through hole is not communicated with the second through hole, and the magnetic member is arranged in the third through hole.

[0015] Further, the magnetic member is arranged at the bottom of the third through hole.

[0016] The beneficial effect of adopting the above further technical solution is: by arranging the magnetic member in the blind end or near the blind end, the fixing member is adsorbed, further preventing the fixing member from loosening and falling out, and ensuring the structural stability.

[0017] Further, the length of the second through hole is greater than the length of the first through hole.

[0018] The beneficial effect of adopting the above further technical solution is: to improve the structural stability and ensure the installation reliability.

[0019] Further, the fixing member is a fixing pin.

[0020] Further, a piston is arranged on the outer wall of the piston rod.

[0021] The beneficial effect of adopting the above further technical solution is: a piston is arranged on the outer wall of the piston rod, and the piston presses the end of the fixing member, preventing the fixing member from loosening and falling out, and ensuring the structural stability.

[0022] Compared with the prior art, the present utility model has the following technical effects:

[0023] The buffer plunger installation structure of the hydraulic cylinder provided by the present utility model can realize the fixed installation of the buffer plunger, and the buffer plunger is easy to disassemble and take out; during the working process of the hydraulic cylinder, the buffer plunger is not easy to loosen and fall off, improving the structural stability and installation reliability, ensuring the quality and service life of the hydraulic cylinder; at the same time, the processing is simple and the installation is easy. Description of the Drawings

[0024] Figure 1 Structural schematic diagram of the buffer plunger installation structure of the prior art;

[0025] Figure 2 Structural schematic diagram of the snap ring and installation hole of the prior art;

[0026] Figure 3 Structural schematic diagram of the buffer plunger installation structure of the present utility model;

[0027] Figure 4 Structural schematic diagram of the buffer plunger of the present utility model;

[0028] Figure 5 Structural schematic diagram of the piston rod of the first embodiment of the present utility model;

[0029] Figure 6 Structural schematic diagram of the piston rod of the second embodiment of the present utility model.

[0030] Reference numerals:

[0031] 1. Buffer plunger; 11. First through hole;

[0032] 2. Piston rod; 21. Second through hole; 22. Open end; 23. Blind end; 24. Magnetic member; 25. Third through hole; 26. Installation hole; 27. Groove;

[0033] 3. Fixing member;

[0034] 4. Piston;

[0035] 5. Snap ring. Detailed implementation manners

[0036] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0037] See Figure 3-5, Embodiment 1, a buffer plunger mounting structure for a hydraulic cylinder. The first end of the buffer plunger 1 is mounted in the mounting hole 26 of the piston rod 2. A through hole 11 is provided at the first end of the buffer plunger 1, and the through hole 11 penetrates through the buffer plunger 1. A through hole 21 is provided on the piston rod 2. The center line of the through hole 11 coincides with the center line of the through hole 21. The length of the through hole 21 is greater than the length of the through hole 11. A fixing member 3 is provided in the through hole 11 and the through hole 21, and the fixing member 3 is a fixing pin. By inserting the fixing pin into the through hole 11 and the through hole 21, the fixing of the buffer plunger 1 is realized.

[0038] The outer wall of the piston rod 2 is provided with a piston 4. After the buffer plunger 1 is mounted on the piston rod 2, the piston 4 is assembled to ensure that the piston 4 presses against the fixing member 3 and the open end 22 of the through hole 21, preventing the fixing member 3 from loosening and falling out, and ensuring the stability of the structure.

[0039] Optionally, a magnetic member 24 is further provided on the piston rod 2 for attracting the fixing pin to prevent the fixing pin from loosening and falling out, and ensuring the stability of the mounting structure. The magnetic member 24 is a magnet.

[0040] One end of the through hole 21 is an open end 22, and the other end is a blind end 23. A groove is provided in the blind end 23, and the magnet is provided in the groove.

[0041] See Figure 6 , the piston rod 2 of Embodiment 2. A through hole 25 is provided on the piston rod 2. The center line of the through hole 25 coincides with the center line of the through hole 21, and the through hole 25 is not communicated with the through hole 21. The magnet is provided at the bottom of the through hole 25, so as to realize the attraction of the fixing pin, prevent the fixing pin from loosening and falling out, ensure the stability of the mounting structure, and at the same time facilitate processing and the installation of the magnet.

[0042] The buffer plunger mounting structure of the hydraulic cylinder provided by the present utility model can realize the fixed installation of the buffer plunger, and the buffer plunger is easy to disassemble and take out; during the working process of the hydraulic cylinder, the buffer plunger is not easy to loosen and fall off, improving the structural stability and installation reliability, ensuring the quality and service life of the hydraulic cylinder; at the same time, the processing is simple and the installation is easy.

[0043] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A buffer plunger installation structure for a hydraulic cylinder, characterized in that: The first end of the buffer plunger is installed in the mounting hole of the piston rod. The first end of the buffer plunger is provided with a through hole 1, and the piston rod is provided with a through hole 2. The center line of the through hole 1 coincides with the center line of the through hole 2, and fixing parts are provided in the through hole 1 and the through hole 2.

2. The buffer plunger installation structure for a hydraulic cylinder according to claim 1, characterized in that: The through hole 1 is arranged to penetrate the buffer plunger.

3. The buffer plunger installation structure for a hydraulic cylinder according to claim 1, characterized in that: One end of the through hole 2 is an open end, and the other end is a blind end.

4. The buffer plunger installation structure for a hydraulic cylinder according to claim 3, characterized in that: The piston rod is also provided with a magnetic part.

5. The buffer plunger installation structure for a hydraulic cylinder according to claim 4, characterized in that: A groove is formed at the blind end of the second through hole, and the magnetic component is arranged in the groove.

6. The buffer plunger installation structure for a hydraulic cylinder according to claim 4, characterized in that: The piston rod is provided with a through hole three, the center line of the through hole three coincides with the center line of the through hole two, and the through hole three is not connected with the through hole two, and the magnetic part is arranged in the through hole three.

7. The buffer plunger installation structure for a hydraulic cylinder according to claim 6, characterized in that: The magnetic component is arranged at the bottom of the through hole three.

8. The buffer plunger installation structure for a hydraulic cylinder according to claim 1, characterized in that: The length of the second through hole is greater than the length of the first through hole.

9. The buffer plunger installation structure for a hydraulic cylinder according to claim 1, characterized in that: The fixing member is a fixing pin.

10. The buffer plunger installation structure for a hydraulic cylinder according to claim 1, characterized in that: The outer wall of the piston rod is provided with a piston.

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