A bidirectional port integrated piston rod head oil cylinder
By optimizing the structural design of the piston rod head cylinder, the problems of insufficient control precision in the hydraulic system and inconvenient maintenance at the piston connection point were solved, achieving efficient hydraulic control and a simplified maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU WEIHANG MASCH CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-29
AI Technical Summary
The existing bidirectional oil port design of the piston rod head cylinder results in insufficient control precision of the hydraulic system, making it difficult to meet the precise adjustment requirements under complex working conditions. Furthermore, the piston connection deforms after long-term use, making it inconvenient to disassemble and maintain, increasing equipment downtime and maintenance costs.
A bidirectional oil port integrated piston rod head cylinder is designed, including a head assembly, a piston rod assembly, a piston sleeve assembly, a tail assembly, and a limiting assembly. By optimizing the oil port layout and sealing structure, the response speed and sealing performance of the hydraulic oil are improved, and the piston maintenance process is simplified.
It improves the control accuracy and response speed of the hydraulic system, reduces installation space requirements, simplifies piston maintenance, and reduces equipment downtime and maintenance costs.
Smart Images
Figure CN224301155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of piston rod head cylinder technology, and more specifically to a bidirectional oil port integrated piston rod head cylinder. Background Technology
[0002] With the continuous progress and development of industrial technology, the performance requirements for mechanical equipment are also getting higher and higher. As a key component in the hydraulic system, the piston rod head cylinder transmits power to the external load through the piston rod to realize high-load mechanical movement or work.
[0003] However, most existing piston rod head cylinders have bidirectional oil ports, resulting in insufficient control precision of the hydraulic system, making it difficult to meet the precise adjustment requirements under complex working conditions.
[0004] In addition, the piston connection of the existing device deforms after long-term use, making it inconvenient to disassemble and maintain, which increases equipment downtime and maintenance costs, and affects overall operating efficiency.
[0005] Therefore, in order to solve the above problems, this application provides a bidirectional oil port integrated piston rod head cylinder. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a bidirectional oil port integrated piston rod head cylinder to solve the problems existing in the background art.
[0007] This utility model provides the following technical solution: a bidirectional oil port integrated piston rod head cylinder, including a head assembly and a piston rod assembly installed on the right side of the head assembly, a piston sleeve assembly installed on the right end of the piston rod assembly, a tail assembly sleeved on the outside of the piston rod assembly and the piston sleeve assembly, a third sealing assembly fixedly installed between the head assembly and the piston rod assembly, and a limit assembly fixedly installed inside the tail assembly;
[0008] Preferably, the head assembly includes a head mounting head, an oil filling groove, and a mounting hole, wherein the left end of the head mounting head has two pairs of oil filling grooves, and the middle part of the head mounting head has a mounting hole.
[0009] Preferably, the piston rod assembly includes a rod tube, a piston rod, a first retaining ring, a first oil pipe, and a second oil pipe. The left end of the rod tube is fixedly welded to the head mounting head, the piston rod is fixedly installed on the right end of the rod tube, the first retaining ring is disposed at the connection between the rod tube and the piston rod, the first oil pipe and the second oil pipe are disposed inside the rod tube, and the right end of the second oil pipe is fixedly installed on the inner wall of the rod tube and connected to its exterior. At this time, hydraulic oil can be injected into the first oil pipe or the second oil pipe through the oil injection groove.
[0010] Preferably, the piston sleeve assembly includes an alloy piston sleeve, a first annular groove, a first sealing ring, a second annular groove, a second sealing ring, a second retaining ring, a fixing plate, and mounting screws. The alloy piston sleeve is engaged with the right end of the piston rod. Four first annular grooves are formed on the outer side of the alloy piston sleeve. The first sealing rings are engaged in pairs within the two first annular grooves located in the middle. The second sealing rings are engaged within the second annular groove formed on the inner left side wall of the alloy piston sleeve. The second retaining ring is positioned at the protrusion where the alloy piston sleeve and piston rod are engaged. The fixing plate is fitted to the right end of the alloy piston sleeve and piston rod. Four mounting screws are evenly distributed circumferentially on the fixing plate. The threaded ends of the mounting screws pass through the fixing plate and engage with the alloy piston sleeve. At this point, the first sealing rings engaged in the first annular grooves effectively seal the contact area between the alloy piston sleeve and the tail assembly. If a stronger seal is required after long-term use, new first annular grooves can be added to the two additional first annular grooves to enhance the seal.
[0011] Preferably, the tail assembly includes a cylinder body and a tail mounting head, the cylinder body is sleeved on the outside of the piston rod assembly and the piston sleeve assembly, and the tail mounting head is fixedly welded to the right end of the cylinder body.
[0012] Preferably, the third sealing assembly includes a sealing alloy sleeve, a third retaining ring, an alloy retaining ring, a fourth sealing ring, and a fifth sealing ring. The sealing alloy sleeve is snapped onto the inner wall of the left end of the cylinder body. An annular protrusion on the left end of the sealing alloy sleeve is fixedly welded to the left end of the cylinder body. The third retaining ring is fitted to the right end of the sealing alloy sleeve and fixedly welded to the inner wall of the cylinder body. The alloy retaining ring is located at the protrusion in the middle of the sealing alloy sleeve, where it is snapped onto the cylinder body. The fourth sealing ring is snapped onto the outer side of the left half of the sealing alloy sleeve where it fits against the cylinder body. The fifth sealing ring is snapped onto the inner side of the right half of the sealing alloy sleeve where it fits against the rod tube. At this point, the alloy retaining ring and the fourth sealing ring, snapped between the sealing alloy sleeve and the cylinder body, effectively seal the space between the sealing alloy sleeve and the cylinder body to prevent external air from entering the cavity. The fifth sealing ring, snapped between the sealing alloy sleeve and the rod tube, effectively seals the space between the rod tube and the sealing alloy sleeve to prevent oil leakage.
[0013] Preferably, the limiting component includes a first limiting ring and a second limiting ring, wherein the first limiting ring is fixedly welded to the outer wall of the rod tube, and the second limiting ring is fixedly welded to the inner wall of the cylinder.
[0014] The technical effects and advantages of this utility model are as follows:
[0015] The design of the head assembly and piston rod assembly reduces the layout of external oil pipes, saving installation space. At the same time, the oil port is close to the piston rod, allowing the hydraulic oil to act directly, which effectively improves the response speed. Meanwhile, the multi-groove design and installation design of the piston sleeve assembly improves the sealing performance and facilitates subsequent maintenance of the piston. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a partial cross-sectional view of the overall structure of this utility model.
[0018] Figure 3 This is a partial cross-sectional view of the overall structure on the other side of this utility model.
[0019] Figure 4 For the present utility model Figure 3 Schematic diagram of the structure at point A in the middle.
[0020] Figure 5 For the present utility model Figure 2 Schematic diagram of the structure at point B.
[0021] Figure 6 This is a schematic diagram of the limiting component structure of this utility model.
[0022] The attached figures are labeled as follows: 1. Head assembly; 101. Head mounting head; 102. Oil filling groove; 103. Mounting hole; 2. Piston rod assembly; 201. Rod tube; 202. Piston column; 203. First retaining ring; 204. First oil pipe; 205. Second oil pipe; 3. Piston sleeve assembly; 301. Alloy piston sleeve; 302. First annular groove; 303. First sealing ring; 304. Second annular groove; 305. Second sealing ring; 306. Second retaining ring; 307. Fixing disc; 308. Mounting screw; 4. Tail assembly; 401. Cylinder block; 402. Tail mounting head; 5. Third sealing assembly; 501. Sealing alloy sleeve; 502. Third retaining ring; 503. Alloy retaining ring; 504. Fourth sealing ring; 505. Fifth sealing ring; 6. Limiting assembly; 601. First limiting ring; 602. Second limiting ring. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The bidirectional oil port integrated piston rod head cylinder involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Reference Figure 1 and Figure 2This utility model provides a bidirectional oil port integrated piston rod head cylinder, including a head assembly 1 and a piston rod assembly 2 installed on the right side of the head assembly 1, a piston sleeve assembly 3 installed on the right end of the piston rod assembly 2, a tail assembly 4 sleeved on the outside of the piston rod assembly 2 and the piston sleeve assembly 3, a third sealing assembly 5 fixedly installed between the head assembly 1 and the piston rod assembly 2, and a limit assembly 6 fixedly installed inside the tail assembly 4.
[0025] Reference Figure 1 and Figure 2 The head assembly 1 includes a head mounting head 101, an oil filling groove 102 and a mounting hole 103, wherein the head mounting head 101 has two pairs of oil filling grooves 102 at its left end and a mounting hole 103 at its middle.
[0026] Reference Figure 2 The piston rod assembly 2 includes a rod tube 201, a piston rod 202, a first retaining ring 203, a first oil pipe 204, and a second oil pipe 205. The left end of the rod tube 201 is fixedly welded to the head mounting head 101, the piston rod 202 is fixedly installed on the right end of the rod tube 201, the first retaining ring 203 is located at the connection between the rod tube 201 and the piston rod 202, the first oil pipe 204 and the second oil pipe 205 are located inside the rod tube 201, and the right end of the second oil pipe 205 is fixedly installed on the inner wall of the rod tube 201 and connected to its outside. At this time, hydraulic oil can be injected into the first oil pipe 204 or the second oil pipe 205 through the oil injection groove 102.
[0027] Reference Figure 2-4 The piston sleeve assembly 3 includes an alloy piston sleeve 301, a first annular groove 302, a first sealing ring 303, a second annular groove 304, a second sealing ring 305, a second retaining ring 306, a fixing plate 307, and mounting screws 308. The alloy piston sleeve 301 is engaged with the right end of the piston rod 202. Four first annular grooves 302 are formed on the outer side of the alloy piston sleeve 301. The first sealing rings 303 are engaged in pairs within the two first annular grooves 302 located in the middle. The second sealing rings 305 are engaged within the second annular groove 304 formed on the inner left side wall of the alloy piston sleeve 301. The second retaining ring 306 is disposed between the alloy piston sleeve 301 and... The piston rod 202 is engaged with the protruding part for positioning. The fixing plate 307 is fitted to the right end of the alloy piston sleeve 301 and the piston rod 202. The fixing plate 307 is provided with four mounting screws 308 evenly distributed in a circle. After the threaded end of the mounting screw 308 moves through the fixing plate 307, the thread engages with the alloy piston sleeve 301. At this time, the first sealing ring 303 engaged in the first ring groove 302 effectively seals the joint between the alloy piston sleeve 301 and the tail assembly 4. If the seal needs to be strengthened after long-term use, new first ring grooves 302 can be added to the two additional first ring grooves 302 to strengthen the seal.
[0028] Reference Figure 2 The tail assembly 4 includes a cylinder body 401 and a tail mounting head 402. The cylinder body 401 is sleeved on the outside of the piston rod assembly 2 and the piston sleeve assembly 3. The tail mounting head 402 is fixedly welded to the right end of the cylinder body 401.
[0029] Reference Figure 2 and Figure 5 The third sealing assembly 5 includes a sealing alloy sleeve 501, a third retaining ring 502, an alloy retaining ring 503, a fourth sealing ring 504, and a fifth sealing ring 505. The sealing alloy sleeve 501 is snapped onto the inner wall of the left end of the cylinder body 401. An annular protrusion on the left end of the sealing alloy sleeve 501 is fixedly welded to the left end of the cylinder body 401. The third retaining ring 502 is fitted to the right end of the sealing alloy sleeve 501 and fixedly welded to the inner wall of the cylinder body 401. The alloy retaining ring 503 is located at the protrusion in the middle of the sealing alloy sleeve 501 that engages with and positions it against the cylinder body 401. The fourth sealing ring 504 is snapped onto the inner wall of the cylinder body 405. At the contact point between the outer side of the left half of the sealing alloy sleeve 501 and the cylinder 401, the fifth sealing ring 505 is snapped onto the inner side of the right half of the sealing alloy sleeve 501 and the rod tube 201. At this time, the alloy retaining ring 503 and the fourth sealing ring 504 snapped between the sealing alloy sleeve 501 and the cylinder 401 effectively seal the sealing alloy sleeve 501 and the cylinder 401 to prevent external air from entering the cavity. The fifth sealing ring 505 snapped between the sealing alloy sleeve 501 and the rod tube 201 effectively seals the rod tube 201 and the sealing alloy sleeve 501 to prevent oil leakage.
[0030] Reference Figure 2 and Figure 6 The limiting component 6 includes a first limiting ring 601 and a second limiting ring 602, wherein the first limiting ring 601 is fixedly welded to the outer wall of the rod tube 201, and the second limiting ring 602 is fixedly welded to the inner wall of the cylinder 401.
[0031] The working principle of this utility model is as follows: In this device, the alloy retaining ring 503 and the fourth sealing ring 504, which are engaged between the sealing alloy sleeve 501 and the cylinder body 401, effectively seal the space between the sealing alloy sleeve 501 and the cylinder body 401 to prevent external air from entering the cavity. The fifth sealing ring 505, which is engaged between the sealing alloy sleeve 501 and the rod tube 201, effectively seals the space between the rod tube 201 and the sealing alloy sleeve 501 to prevent oil leakage and pressure loss. The first sealing ring 303, which is engaged in the first ring groove 302, effectively seals the contact point between the alloy piston sleeve 301 and the cylinder body 401. If a stronger seal is required after long-term use, a new first ring groove 302 can be added to the two additional first ring grooves 302 to enhance the seal. This device is used to pull... When extending, hydraulic oil is injected into the first oil pipe 204 through the upper oil injection groove 102. The hydraulic oil then enters the cavity formed by the fixed plate 307, the cylinder 401, and the tail mounting head 402 through the first oil pipe 204. Under hydraulic pressure, the fixed plate 307 pushes the component fixedly connected to the left to move to the left relative to the cylinder 401. When retracting the device, hydraulic oil is injected into the second oil pipe 205 through the lower oil injection groove 102. The hydraulic oil then enters the cavity formed by the rod tube 201 and the cylinder 401 through the second oil pipe 205. Under hydraulic pressure, the alloy piston sleeve 301 drives the component fixedly connected to it to move to the right relative to the cylinder 401. The first limiting ring 601 and the second limiting ring 602 can prevent the impact caused by excessively rapid extension and retraction from deforming the sealing component.
[0032] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0033] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0034] Finally: 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, improvements, etc., 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 bidirectional oil port integrated piston rod head cylinder, comprising a head assembly (1) and a piston rod assembly (2) mounted on the right side of the head assembly (1), wherein a piston sleeve assembly (3) is mounted on the right end of the piston rod assembly (2), a tail assembly (4) is sleeved on the outside of the piston rod assembly (2) and the piston sleeve assembly (3), a third sealing assembly (5) is fixedly installed between the head assembly (1) and the piston rod assembly (2), and a limit assembly (6) is fixedly installed inside the tail assembly (4), characterized in that: The head assembly (1) includes a head mounting head (101), and the piston rod assembly (2) includes a rod tube (201), a piston rod (202), a first retaining ring (203), a first oil pipe (204), and a second oil pipe (205). The left end of the rod tube (201) is fixedly welded to the head mounting head (101), the piston rod (202) is fixedly installed on the right end of the rod tube (201), the first retaining ring (203) is located at the connection between the rod tube (201) and the piston rod (202), the first oil pipe (204) and the second oil pipe (205) are located inside the rod tube (201), and the right end of the second oil pipe (205) is fixedly installed on the inner wall of the rod tube (201) and connected to its exterior.
2. The bidirectional oil port integrated piston rod head cylinder according to claim 1, characterized in that: The head assembly (1) further includes an oil filling groove (102) and a mounting hole (103), wherein the head mounting head (101) has two pairs of oil filling grooves (102) at its left end and a mounting hole (103) at its middle.
3. The bidirectional oil port integrated piston rod head cylinder according to claim 1, characterized in that: The piston sleeve assembly (3) includes an alloy piston sleeve (301), a first annular groove (302), a first sealing ring (303), a second annular groove (304), a second sealing ring (305), a second retaining ring (306), a fixing plate (307), and mounting screws (308). The alloy piston sleeve (301) is snapped onto the right end of the piston rod (202). Four first annular grooves (302) are formed on the outer side of the alloy piston sleeve (301). The first sealing rings (303) are snapped into pairs within the two first annular grooves (302) located in the middle. The second sealing rings (304) are... The ring (305) is engaged in the second annular groove (304) opened on the left inner wall of the alloy piston sleeve (301). The second retaining ring (306) is set at the protrusion where the alloy piston sleeve (301) and the piston column (202) are engaged and positioned. The fixing plate (307) is set and fits against the right end of the alloy piston sleeve (301) and the piston column (202). The fixing plate (307) is provided with four mounting screws (308) evenly distributed in a circle. The threaded end of the mounting screw (308) moves through the fixing plate (307) and then engages the alloy piston sleeve (301).
4. A bidirectional oil port integrated piston rod head cylinder according to claim 1, characterized in that: The tail assembly (4) includes a cylinder body (401) and a tail mounting head (402). The cylinder body (401) is sleeved on the outside of the piston rod assembly (2) and the piston sleeve assembly (3). The tail mounting head (402) is fixedly welded to the right end of the cylinder body (401).
5. A bidirectional oil port integrated piston rod head cylinder according to claim 4, characterized in that: The third sealing assembly (5) includes a sealing alloy sleeve (501), a third retaining ring (502), an alloy retaining ring (503), a fourth sealing ring (504), and a fifth sealing ring (505). The sealing alloy sleeve (501) is snapped onto the inner wall of the left end of the cylinder body (401). An annular protrusion on the left end of the sealing alloy sleeve (501) is fixedly welded to the left end of the cylinder body (401). The third retaining ring (502) is fitted to the sealing alloy sleeve. (501) The right end is fixedly welded to the inner wall of the cylinder body (401). The alloy retaining ring (503) is set at the protrusion in the middle of the sealing alloy sleeve (501) and the cylinder body (401) for positioning. The fourth sealing ring (504) is snapped into the outer side of the left half of the sealing alloy sleeve (501) and the contact point with the cylinder body (401). The fifth sealing ring (505) is snapped into the inner side of the right half of the sealing alloy sleeve (501) and the contact point with the rod tube (201).
6. A bidirectional oil port integrated piston rod head cylinder according to claim 4, characterized in that: The limiting component (6) includes a first limiting ring (601) and a second limiting ring (602), wherein the first limiting ring (601) is fixedly welded to the outer wall of the rod tube (201), and the second limiting ring (602) is fixedly welded to the inner wall of the cylinder (401).