A piston rod connection assembly

Abstract

This utility model discloses a piston rod connecting assembly, specifically relating to the field of piston rod connection technology. It includes a piston cylinder, a piston rod inside the piston cylinder, a piston plate at the bottom end of the piston rod, and a disassembly mechanism at the bottom end of the piston rod for installing and removing the piston plate. The disassembly mechanism includes a support plate at the bottom end of the piston rod, a connecting rod at the bottom end of the piston rod, and a clamping plate threadedly connected to the bottom end of the connecting rod. Both the support plate and the clamping plate have two fourth threaded holes, and the two interconnected fourth threaded holes are threaded with the same fourth bolt. An extension rod is fixedly attached to the top end of the connecting rod, and the extension rod can be inserted into the piston rod. A third threaded hole is provided on both the extension rod and the piston rod. This utility model allows the piston plate to be removed from the piston rod for replacement via the disassembly mechanism, extending the service life of the utility model. Furthermore, the second bolt allows the sealing ring to be removed from the placement groove for easy replacement, preventing any impact on sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of piston rod connection technology, and specifically to a piston rod connection assembly. Background Technology

[0002] The piston rod is the connecting component that supports the piston in performing work. It is mostly used in hydraulic cylinders and pneumatic cylinders. It is a moving component with frequent movement and high technical requirements. In order to prevent hydraulic oil from leaking from the connection between the piston rod and the piston rod, an O-ring installation groove is often designed at the smooth end of the piston rod. During actual installation, an O-ring is installed to prevent leakage.

[0003] For example, Chinese patent application No. 202221963200.3 provides a piston rod connection structure to prevent piston rod breakage, including: a cylinder, a cylinder head fixedly connected to the upper end of the cylinder, a piston rod slidably connected inside the cylinder, a piston rod fixedly connected to the bottom end of the piston rod by a nut, grooves on both sides of the piston rod, sliders fixedly connected to both sides of the cylinder, the sliders slidably connected in the grooves, a connecting ring fixedly connected to the upper end of the cylinder head, connecting plates fixedly connected to both sides of the upper end of the connecting ring, a limiting ring fixedly connected to the upper end of the connecting plates on the side closest to each other, and the limiting ring and the piston rod slidably connected. This technical solution avoids the problem of breakage caused by stress concentration by setting the O-ring on the piston, so that the piston rod has no corresponding groove structure. In addition, during use, the limiting ring, connecting plate and connecting ring structure can also prevent tilting caused by large piston rod movement, which is convenient for long-term use of the piston rod.

[0004] However, the following problems still exist in this technical solution: prolonged friction can easily damage the piston, and the piston cannot be removed from the piston rod, thus affecting the use of the device. Utility Model Content

[0005] The purpose of this invention is to provide a piston rod connecting assembly. The piston plate can be removed from the piston rod and replaced through a disassembly mechanism, thus extending the service life of this invention. Furthermore, the sealing ring can be removed from the placement groove through a second bolt, facilitating replacement and avoiding affecting the sealing performance, thereby solving the aforementioned shortcomings in the technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a piston rod connecting assembly, including a piston cylinder, a piston rod disposed inside the piston cylinder, a piston plate disposed at the bottom end of the piston rod, and a disassembly mechanism for installing and disassembling the piston plate disposed at the bottom end of the piston rod.

[0007] Preferably, the disassembly mechanism includes a support plate at the bottom of the piston rod, a connecting rod at the bottom of the piston rod, and a clamping plate threadedly connected to the bottom of the connecting rod. Both the support plate and the clamping plate have two fourth threaded holes, and the two connected fourth threaded holes are threaded with the same fourth bolt for installing and disassembling the piston plate.

[0008] Preferably, an extension rod is fixedly provided at the top of the connecting rod. The extension rod can be inserted into the piston rod. A third threaded hole is provided on the extension rod and the piston rod. The two connected third threaded holes are threaded with the same third bolt, which is used to adjust the distance between the support plate and the clamping plate.

[0009] Preferably, the piston cylinder is provided with a sealing mechanism at the top to seal the piston cylinder. The sealing mechanism includes a connecting plate located outside the piston cylinder, and a mounting plate on the top of the connecting plate. Both the connecting plate and the mounting plate are provided with multiple first threaded holes. Two connected first threaded holes are internally threaded with the same first bolt for sealing the piston cylinder.

[0010] Preferably, the mounting plate has a placement groove, and a sealing ring is provided inside the placement groove. Both the sealing ring and the mounting plate have second threaded holes, and the two connected second threaded holes are threaded with the same second bolt to increase the sealing performance.

[0011] Preferably, the top of the mounting plate is provided with a limiting frame, through which the piston rod passes to limit the piston rod.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. First, rotate the fourth bolt to turn it out of the two fourth threaded holes. Then, rotate the clamping plate to remove it from the connecting rod. Then, pull the piston plate to remove it from the piston rod and replace it, thus extending the service life of this utility model.

[0014] 2. When the sealing ring is damaged, turn the second bolt into the two second threaded holes and then turn it out. Use the second bolt to remove the sealing ring from the placement groove for easy replacement and to avoid affecting the sealing performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a front view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the disassembly mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the sealing ring of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Piston cylinder; 2. Piston rod; 3. Piston plate;

[0023] 4. Sealing mechanism, 401 connecting plate, 402 mounting plate, 403 first threaded hole, 404 first bolt, 405 placement groove, 406 sealing ring, 407 second threaded hole, 408 second bolt, 409 limit bracket;

[0024] 5. Disassembly mechanism, 501. Support plate, 502. Connecting rod, 503. Clamping plate, 504. Extension rod, 505. Third threaded hole, 506. Third bolt, 507. Fourth threaded hole, 508. Fourth bolt. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 A piston rod connection assembly is shown, including a piston cylinder 1, a piston rod 2 inside the piston cylinder 1, a piston plate 3 at the bottom end of the piston rod 2, and a disassembly mechanism 5 at the bottom end of the piston rod 2 for installing and disassembling the piston plate 3.

[0027] like Figure 3 As shown, the disassembly mechanism 5 includes a support plate 501 at the bottom end of the piston rod 2, a connecting rod 502 at the bottom end of the piston rod 2, and a clamping plate 503 threadedly connected to the bottom end of the connecting rod 502. Both the support plate 501 and the clamping plate 503 have two fourth threaded holes 507, and the two connected fourth threaded holes 507 are threadedly connected to the same fourth bolt 508.

[0028] First, rotate the fourth bolt 508 to turn it out of the two fourth threaded holes 507. Then, rotate the clamping plate 503 to remove it from the connecting rod 502. Then, pull the piston plate 3 to remove it from the piston rod 2 and replace it, thus extending the service life of this utility model.

[0029] like Figure 3 As shown, an extension rod 504 is fixedly provided at the top of the connecting rod 502. The extension rod 504 can be inserted into the piston rod 2. The extension rod 504 and the piston rod 2 are provided with a third threaded hole 505. The two connected third threaded holes 505 are threaded with the same third bolt 506.

[0030] Rotate the third bolt 506 to turn it out of the third threaded hole 505, and then pull the connecting rod 502. The connecting rod 502 can drive the extension rod 504 to slide inside the piston rod 2. By adjusting the distance between the support plate 501 and the clamping plate 503, it is possible to clamp piston plates 3 of different thicknesses, thereby expanding the practicality of this utility model.

[0031] like Figure 4 As shown, the piston cylinder 1 is provided with a sealing mechanism 4 at the top to seal the piston cylinder 1. The sealing mechanism 4 includes a connecting plate 401 provided outside the piston cylinder 1. The connecting plate 401 is provided with a mounting plate 402 at the top. Both the connecting plate 401 and the mounting plate 402 are provided with multiple first threaded holes 403. The same first bolt 404 is threadedly connected inside two connected first threaded holes 403. The mounting plate 402 is provided with a limiting frame 409 at the top. The piston rod 2 passes through the limiting frame 409.

[0032] like Figure 5 As shown, a placement groove 405 is provided on the mounting plate 402, and a sealing ring 406 is provided inside the placement groove 405. Both the sealing ring 406 and the mounting plate 402 are provided with second threaded holes 407, and the two connected second threaded holes 407 are threadedly connected to the same second bolt 408.

[0033] Place the mounting plate 402 on top of the connecting plate 401, rotate the first bolt 404 to turn it into the two first threaded holes 403, and use the first bolt 404 to fix the mounting plate 402 to the top of the connecting plate 401. The piston rod 2 can be limited by the limiting bracket 409. When the sealing ring 406 is damaged, rotate the second bolt 408 to turn it into the two second threaded holes 407 and out. Use the second bolt 408 to remove the sealing ring 406 from the placement groove 405 for easy replacement and to avoid affecting the sealing performance.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A piston rod connecting assembly, comprising a piston cylinder (1), characterized in that: The piston cylinder (1) is provided with a piston rod (2) inside, and a piston plate (3) is provided at the bottom end of the piston rod (2). A disassembly mechanism (5) for installing and disassembling the piston plate (3) is provided at the bottom end of the piston rod (2). The disassembly mechanism (5) includes a support plate (501) at the bottom of the piston rod (2), a connecting rod (502) at the bottom of the piston rod (2), a clamping plate (503) threadedly connected to the bottom of the connecting rod (502), and two fourth threaded holes (507) on both the support plate (501) and the clamping plate (503), with the same fourth bolt (508) threadedly connected inside the two connected fourth threaded holes (507).

2. The piston rod connecting assembly according to claim 1, characterized in that: The connecting rod (502) is fixedly provided with an extension rod (504) at its top end. The extension rod (504) can be inserted into the piston rod (2). The extension rod (504) and the piston rod (2) are provided with a third threaded hole (505). The two connected third threaded holes (505) are threaded with the same third bolt (506).

3. The piston rod connecting assembly according to claim 1, characterized in that: The piston cylinder (1) is provided with a sealing mechanism (4) at the top to seal the piston cylinder (1). The sealing mechanism (4) includes a connecting plate (401) located outside the piston cylinder (1). The top of the connecting plate (401) is provided with a mounting plate (402). Both the connecting plate (401) and the mounting plate (402) are provided with multiple first threaded holes (403). The two connected first threaded holes (403) are internally threaded with the same first bolt (404).

4. A piston rod connecting assembly according to claim 3, characterized in that: The mounting plate (402) has a placement groove (405), and a sealing ring (406) is provided inside the placement groove (405).

5. A piston rod connecting assembly according to claim 4, characterized in that: The sealing ring (406) and the mounting plate (402) are both provided with second threaded holes (407), and the two connected second threaded holes (407) are internally threaded with the same second bolt (408).

6. A piston rod connecting assembly according to claim 3, characterized in that: The mounting plate (402) is provided with a limiting frame (409) at the top, and the piston rod (2) passes through the limiting frame (409).

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