A cylinder piston dismounting tool

Abstract

The application provides an oil cylinder piston dismounting tool, which comprises a base, a mounting hole is formed in the base, and the mounting hole is used for placing an oil cylinder piston; a limiting assembly is symmetrically arranged on the base along a first direction, and the limiting assembly comprises a baffle, a driving piece and a limiting piece; the baffle is arranged on the base; the driving piece is arranged on the baffle; the limiting piece is connected to the driving piece and is slidingly arranged on the base; and the driving piece drives the limiting piece to move on the base. The oil cylinder piston is fixed from the top by the limiting assembly, the piston rod is conveniently pulled from the bottom to realize dismounting of the piston rod and the oil cylinder shell, the fixing assembly can limit and fix the limiting assembly, the limiting ability of the limiting assembly to the oil cylinder piston during dismounting is stronger, and the efficiency and safety of dismounting of the oil cylinder piston are further improved.

Description

Technical Field

[0001] This application belongs to the field of hydraulic cylinder piston disassembly and assembly technology, specifically relating to a hydraulic cylinder piston disassembly tool. Background Technology

[0002] As heavy-duty mining transport equipment, trucks are prone to piston leakage during long-term use. The causes are often aging, wear, or damage to the internal piston sealing components, leading to hydraulic oil leakage from the gap between the piston and the cylinder housing. The leaking hydraulic oil adheres directly to the brake pads and discs, significantly reducing the friction between them and drastically diminishing the truck's braking force, seriously threatening vehicle safety during driving and operation.

[0003] Regarding the aforementioned oil leakage fault, the existing repair methods have the following problems: the existing hydraulic cylinder piston 6... Figure 1 As shown, it includes a cylinder housing 61 and a piston rod 62 installed inside the cylinder housing. Because the clearance between the working brake cylinder housing and the piston rod is extremely small and the fit is tight, it is difficult to disassemble them manually. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To address the aforementioned problems, this application provides a hydraulic cylinder piston removal tool, comprising: A base, wherein a mounting hole is provided on the base for placing the cylinder piston; A limiting component is symmetrically arranged on the base along a first direction. The limiting component includes a baffle, a driving member, and a limiting member. The baffle is disposed on the base, the driving member is disposed on the baffle, and the limiting member is connected to the driving member and slidably disposed on the base. The driving member drives the limiting member to move on the base for limiting the oil cylinder piston along the axial direction of the oil cylinder piston.

[0006] Optionally, the limiting member includes: The first limiting plate is connected to the driving component and slidably disposed on the base, and is used to limit the oil cylinder outer shell in the oil cylinder piston; A second limiting plate is disposed on the first limiting plate, and the second limiting plate is used to limit the piston rod in the oil cylinder piston.

[0007] Optionally, the first limiting plate and the second limiting plate are L-shaped structures.

[0008] Optionally, the driving element includes: A fixing plate is disposed on the base and located on both sides of the second limiting plate. Limiting holes are provided on the fixing plate, and the two sides of the first limiting plate are slidably disposed in the limiting holes. A pull rod, which passes through the baffle and connects to the first limiting plate; A guide rod passes through the first limiting plate and is disposed on the baffle, with the guide rod located on both sides of the pull rod; A first elastic element is disposed between the first limiting plate and the baffle.

[0009] Optionally, fixing holes are provided on both sides of the first limiting plate.

[0010] Optionally, it also includes a fixing component, which is symmetrically arranged on both sides of the mounting hole along the second direction, and the first direction is perpendicular to the second direction. The fixing component is used to fix the first limiting plate.

[0011] Optionally, the fixing component includes: A drive rod, which is mounted on the base; Mounting bracket, the mounting bracket is disposed on the drive rod and located on the base; A connecting rod is symmetrically arranged on the base and located on both sides of the drive rod, and the first end of the connecting rod is rotatably connected to the base; A rotating plate is rotatably connected to the mounting base. A limiting block matching the fixing hole is provided on the side of the rotating plate away from the mounting base. The second end of the connecting rod is rotatably connected to the rotating plate and is located between the mounting base and the limiting block. The drive rod can move the mounting base up and down, thereby rotating the rotating plate so that the limiting block is inserted into the fixing hole to fix the first limiting plate.

[0012] Optionally, the fixing component further includes a mounting block, which is disposed on the base, and the first end of the connecting rod is rotatably connected to the mounting block.

[0013] Optionally, the drive rod is a threaded rod.

[0014] Optionally, a guide post is provided on the base and located outside the mounting hole.

[0015] Beneficial effects The present invention provides a hydraulic cylinder piston removal tool. This application uses a limiting component to fix the hydraulic cylinder piston from the top, which facilitates the removal of the piston rod from the hydraulic cylinder housing by pulling the piston rod from the bottom. The fixing component can limit and fix the limiting component, making the limiting component more effective in limiting the hydraulic cylinder piston during the removal process, thereby further improving the efficiency and safety of hydraulic cylinder piston removal. Attached Figure Description

[0016] Figure 1 This is a structural diagram of an existing hydraulic cylinder piston in the background art; Figure 2 This is a side view of the deployment frame of the hydraulic cylinder piston removal tool of the present invention; Figure 3 This is a structural diagram of the first mounting plate of the hydraulic cylinder piston removal tool of the present invention; Figure 4 This is a structural diagram of the second mounting plate of the hydraulic cylinder piston removal tool of the present invention.

[0017] The reference numerals in the attached figures are as follows: 1. Base; 2. Limiting component; 21. Baffle; 22. Driving component; 221. Fixing plate; 222. Pull rod; 223. Guide rod; 224. First elastic element; 23. Limiting component; 231. First limiting plate; 232. Second limiting plate; 3. Fixing hole; 4. Fixing component; 41. Driving rod; 42. Mounting base; 43. Connecting rod; 44. Rotating plate; 45. Limiting block; 46. Mounting block; 5. Guide post; 6. Hydraulic cylinder piston; 61. Hydraulic cylinder housing; 62. Piston rod. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] See also Figure 2-4 As shown, an embodiment of this application provides a hydraulic cylinder piston removal tool, comprising: Base 1, wherein a mounting hole is provided on the base 1 for placing the cylinder piston; A limiting component 2 is symmetrically arranged on the base 1 along a first direction. The limiting component 2 includes a baffle 21, a driving member 22, and a limiting member 23. The baffle 21 is disposed on the base 1, the driving member 22 is disposed on the baffle 21, and the limiting member 23 is connected to the driving member 22 and slidably disposed on the base 1. The driving member 22 drives the limiting member 23 to move on the base 1, thereby limiting the piston of the hydraulic cylinder along the axial direction of the piston.

[0023] In this technical solution, the hydraulic cylinder piston removal fixture provided in this application embodiment includes a base 1 and a limiting component 2. The mounting hole on the base 1 is used to place the hydraulic cylinder piston 6. The hydraulic cylinder piston 6 includes a cylinder housing 61 and a piston rod 62. After the hydraulic cylinder piston 6 is placed into the mounting hole, the piston rod 62 will be located within the mounting hole, while the cylinder housing 61 will be located on the base 1. Therefore, the cylinder housing 61 can be limited and fixed. The limiting component 2 is symmetrically installed on the base 1 along a first direction (i.e., the horizontal direction). The symmetrical arrangement of the limiting component 2 allows it to move from both sides of the base 1 to limit and fix the hydraulic cylinder piston 6 in the axial direction. After fixing, the piston rod 62 can be pulled from the bottom of the base 1, thereby disassembling the cylinder housing 61 and the piston rod 62, improving the efficiency of disassembling the piston rod 62. Because the mounting hole circumferentially limits and fixes the cylinder housing 61, the probability of damage to the cylinder housing 61 during the pulling and disassembly process of the piston rod 62 is reduced.

[0024] The limiting component 2 includes a baffle 21, a driving component 22, and a limiting component 23. The baffle 21 is fixed on the base 1, and the driving component 22 is installed on the baffle 21. It can drive the limiting component 23 to slide along the base 1. When it is necessary to limit the hydraulic cylinder piston 6, the driving component 22 can drive the limiting component 23 to move towards the hydraulic cylinder piston 6 until the limiting component 23 contacts the hydraulic cylinder piston 6 and forms a clamping limit along the piston axis. It can directly act on the axial direction of the hydraulic cylinder piston 6, firmly fix the position of the hydraulic cylinder piston 6, and prevent it from moving axially during disassembly. This provides conditions for subsequent manual or other tool disassembly of the hydraulic cylinder housing 61 and piston rod 62, avoiding the problem of disassembly difficulties and component damage due to ineffective limiting, thereby improving disassembly efficiency.

[0025] In some feasible embodiments, the limiting member 23 includes: The first limiting plate 231 is connected to the driving member 22 and slidably disposed on the base 1, and is used to limit the oil cylinder outer shell in the oil cylinder piston; The second limiting plate 232 is disposed on the first limiting plate 231, and the second limiting plate 232 is used to limit the piston rod in the oil cylinder piston.

[0026] The first limiting plate 231 and the second limiting plate 232 are L-shaped structures.

[0027] In this technical solution, the limiting component 23 includes a first limiting plate 231 and a second limiting plate 232, both of which are L-shaped. When limiting the cylinder piston 6, the driving component 22 can drive the first limiting plate 231 to slide along the base 1, causing the first limiting plate to gradually approach and adhere to the cylinder housing 61, forming a stable constraint on the cylinder housing 61 along the axial direction of the cylinder piston 6. At the same time, since the second limiting plate 232 is set on the first limiting plate 231, it will move synchronously with the first limiting plate 231, thereby approaching and adhering to the piston rod 62, synchronously limiting the piston rod 62 along the axial direction. Therefore, the first limiting plate 231 and the second limiting plate 232 can simultaneously limit the cylinder housing 61 and the piston rod 62 of the cylinder piston 6, ensuring that their relative positions are fixed during disassembly and avoiding disassembly difficulties or component damage caused by the displacement of a single component.

[0028] With both the first limiting plate 231 and the second limiting plate 232 being L-shaped structures, the vertical edges of the first limiting plate 231 and the second limiting plate 232 can contact the vertical edge of the hydraulic cylinder piston 6, ensuring accurate movement and avoiding misalignment. Their lateral edges form surface contact with the end of the hydraulic cylinder piston 6, increasing the limiting contact area and improving limiting stability.

[0029] In some feasible embodiments, the drive element 22 includes: A fixing plate 221 is disposed on the base 1 and located on both sides of the second limiting plate 232. Limiting holes are provided on the fixing plate 221, and the two sides of the first limiting plate 231 are slidably disposed in the limiting holes. Pull rod 222, which passes through the baffle 21 and is connected to the first limiting plate 231; Guide rod 223, the guide rod 223 passes through the first limiting plate 231 and is disposed on the baffle 21, the guide rod 223 is located on both sides of the pull rod 222; The first elastic element 224 is disposed between the first limiting plate 231 and the baffle 21.

[0030] In this technical solution, the driving component 22 includes a fixed plate 221, a pull rod 222, a guide rod 223, and a first elastic element 224. The fixed plate 221 is mounted on the base 1 and has limit holes. When the pull rod 222 pushes the first limit plate 231 to move, the limit holes can limit the first limit plate 231 from both sides. When it is necessary to limit the hydraulic cylinder piston 6, the first elastic element 224 releases its elastic force, pushing the first limit plate 231 to slide along the limit holes of the fixed plate 221 toward the hydraulic cylinder piston 6, and simultaneously driving the second limit... Position plate 232 moves until both are respectively in contact with cylinder housing 61 and piston rod 62 to complete the limiting. During this process, the limiting hole of fixing plate 221 limits the sliding trajectory of first limiting plate 231 to prevent it from shifting left or right when moving. At the same time, guide rod 223 can also limit the movement of first limiting plate 231. When first limiting plate 231 moves to the end of guide rod 223 away from baffle 21, first limiting plate 231 and second limiting plate 232 can respectively limit cylinder housing 61 and piston rod 62. When it is necessary to release the limit, pull rod 222 is pulled away from the piston 6 of the oil cylinder. Pull rod 222 causes the first limit plate 231 to slide in the opposite direction against the elastic force of the first elastic element 224. The first limit plate 231 and the second limit plate 232 are separated from the oil cylinder housing 61 and the piston rod 62. After releasing pull rod 222, the first elastic element 224 can automatically reset, pushing the first limit plate 231 back to the initial limit state. No manual adjustment is required, and the operation is convenient and efficient.

[0031] It is understandable that the first elastic element 224 can be a spring, and the elastic force can be selected according to the limiting requirements of the cylinder piston 6; the guide rod 223 can be set to 2-4 rods, symmetrically distributed on both sides of the pull rod 222, and a handle structure can be set at the end of the pull rod 222 away from the first limiting plate 231 to increase the gripping area and make it easier for the operator to pull and operate.

[0032] In some feasible embodiments, fixing holes 3 are provided on both sides of the first limiting plate 231.

[0033] In this technical solution, the fixing holes 3 are symmetrically opened on the first limiting plate 231, which are used to cooperate with the fixing component 4 to limit and fix the first limiting plate 231 after the cylinder piston 6 is limited.

[0034] In some feasible embodiments, a fixing component 4 is also included, which is symmetrically arranged on both sides of the mounting hole along a second direction, with the first direction being perpendicular to the second direction. The fixing component 4 is used to fix the first limiting plate 231.

[0035] In this technical solution, there are two fixing components 4, which are symmetrically installed on both sides of the mounting hole along a second direction perpendicular to the first direction. They can fix the first limiting plate 231 when it is limited, thereby improving the stability of the first limiting plate 231 in limiting the cylinder piston.

[0036] In some feasible embodiments, the fixing component 4 includes: Drive rod 41, the drive rod 41 is disposed on the base 1; Mounting base 42, which is disposed on the drive rod 41 and located on the base 1; Connecting rod 43, the connecting rod 43 is symmetrically arranged on the base 1 and located on both sides of the drive rod 41, the first end of the connecting rod 43 is rotatably connected to the base 1; A rotating plate 44 is rotatably connected to the mounting base 42. A limiting block 45 matching the fixing hole 3 is provided on the side of the rotating plate 44 away from the mounting base 42. The second end of the connecting rod 43 is rotatably connected to the rotating plate 44 and is located between the mounting base 42 and the limiting block 45. The drive rod 41 can drive the mounting base 42 to move up and down, thereby driving the rotating plate 44 to rotate so that the limiting block 45 can be inserted into the fixing hole 3 to fix the first limiting plate 231.

[0037] In this technical solution, the fixing component 4 includes a drive rod 41, a mounting base 42, a connecting rod 43, a rotating plate 44, and a limiting block 45. After the hydraulic cylinder piston 6 is limited by the limiting component 2, the fixing component 4 is used to fix the limiting component 2 to prevent the first limiting plate 231 from displacing due to external force or the elastic fluctuation of the first elastic element 224. The locking process is as follows: when the drive rod 41 moves the mounting base 42 upward, the mounting base 42 will push the end of the rotating plate 44 close to the mounting base 42 to move upward synchronously; since the first end of the connecting rod 43 is fixed to the base 1 and rotates, and the second end constrains the middle position of the rotating plate 44, the rotating plate 44 will rotate around the connection point between the connecting rod 43 and the rotating plate 44 as the fulcrum, so that the end away from the mounting base 42 flips towards the first limiting plate 231. Finally, the limiting block 45 is inserted into the fixing hole 3 on the first limiting plate 231, thereby forming a clamping constraint on the first limiting plate 231 and preventing it from moving.

[0038] When it is necessary to release the fixation, the reverse operation drive rod 41 moves the mounting base 42 downward, the mounting base 42 pulls one end of the rotating plate 44 downward, and the rotating plate 44 rotates in the opposite direction around the connection point of the connecting rod 43. The limiting block 45 disengages from the fixing hole 3, and the first limiting plate 231 can then return to the sliding state. The setting of the fixing component 4 ensures that the limiting state of the cylinder housing 61 and the piston rod 62 remains stable during the disassembly operation, avoiding component displacement and collision damage caused by loosening of the limiting, and further ensuring the safety of the disassembly process.

[0039] It is understandable that there are two connecting rods 43, which are rotatably mounted on both sides of the rotating plate 44.

[0040] Understandably, the transmission method by which the drive rod 41 moves the mounting base 42 up and down can be selected according to actual operational needs. It can be threaded transmission, hydraulic transmission, or pneumatic transmission, as long as it can achieve stable lifting and lowering of the mounting base 42.

[0041] In some feasible embodiments, the fixing component 4 further includes a mounting block 46, which is disposed on the base 1, and the first end of the connecting rod 43 is rotatably connected to the mounting block 46.

[0042] In this technical solution, the mounting block 46 is mounted on the base 1, and the bottom of the connecting rod 43 is located on both sides of the mounting block 46 and is rotatably connected to the mounting block 46.

[0043] In some feasible embodiments, the drive rod 41 is a threaded rod.

[0044] In this technical solution, the drive rod 41 can be a threaded rod, which is connected to the mounting base 42 through a threaded engagement to achieve lifting and lowering. During operation, only the drive rod 41 needs to be rotated to control the movement of the mounting base 42, which is convenient and labor-saving.

[0045] In some feasible embodiments, a guide post 5 is provided on the base 1 and located outside the mounting hole.

[0046] In this technical solution, a threaded hole is provided on the piston housing. Therefore, a guide post 5 is installed on the base 1 and outside the mounting hole. The position of the guide post 5 matches the threaded hole on the piston housing. Thus, after the piston rod 62 is installed into the mounting hole, the piston housing is located on the base 1. At this time, the guide post 5 is located in the threaded hole of the piston housing. While the first limiting plate 231 and the second limiting plate 232 limit the cylinder piston 6 in the axial direction, the guide post 5 can limit the rotation of the cylinder housing 61, further improving the ability to limit the cylinder housing 61 when the piston rod 62 is removed from the cylinder housing 61.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A hydraulic cylinder piston removal tool, characterized in that, include: A base (1) is provided with a mounting hole for placing a cylinder piston; A limiting component (2) is symmetrically arranged on the base (1) along a first direction. The limiting component (2) includes a baffle (21), a driving member (22), and a limiting member (23). The baffle (21) is arranged on the base (1), the driving member (22) is arranged on the baffle (21), and the limiting member (23) is connected to the driving member (22) and slidably arranged on the base (1). The driving member (22) drives the limiting member (23) to move on the base (1) for limiting the oil cylinder piston along the axial direction of the oil cylinder piston. The limiting member (23) includes: The first limiting plate (231) is connected to the driving member (22) and slidably disposed on the base (1) for limiting the oil cylinder shell in the oil cylinder piston; The second limiting plate (232) is disposed on the first limiting plate (231) and is used to limit the piston rod in the oil cylinder piston; The first limiting plate (231) and the second limiting plate (232) are L-shaped structures; The first limiting plate (231) has fixing holes (3) on both sides; It also includes a fixing component (4), which is symmetrically arranged on both sides of the mounting hole along the second direction. The first direction is perpendicular to the second direction. The fixing component (4) is used to fix the first limiting plate (231). The fixing component (4) includes: A drive rod (41) is disposed on the base (1); Mounting base (42), which is disposed on the drive rod (41) and located on the base (1); Connecting rod (43), the connecting rod (43) is symmetrically arranged on the base (1) and located on both sides of the driving rod (41), the first end of the connecting rod (43) is rotatably connected to the base (1); A rotating plate (44) is rotatably connected to the mounting base (42). A limiting block (45) matching the fixing hole (3) is provided on the side of the rotating plate (44) away from the mounting base (42). The second end of the connecting rod (43) is rotatably connected to the rotating plate (44) and is located between the mounting base (42) and the limiting block (45). The drive rod (41) can drive the mounting base (42) to move up and down, thereby driving the rotating plate (44) to rotate so that the limiting block (45) can be inserted into the fixing hole (3) to fix the first limiting plate (231).

2. The hydraulic cylinder piston removal fixture according to claim 1, characterized in that, The driving element (22) includes: A fixing plate (221) is disposed on the base (1) and located on both sides of the second limiting plate (232). Limiting holes are provided on the fixing plate (221), and the two sides of the first limiting plate (231) are slidably disposed in the limiting holes. A pull rod (222) passes through the baffle (21) and is connected to the first limiting plate (231); A guide rod (223) passes through the first limiting plate (231) and is mounted on the baffle (21). The guide rod (223) is located on both sides of the pull rod (222). A first elastic element (224) is disposed between the first limiting plate (231) and the baffle (21).

3. The hydraulic cylinder piston removal fixture according to claim 2, characterized in that, The fixing component (4) further includes a mounting block (46), which is disposed on the base (1), and the first end of the connecting rod (43) is rotatably connected to the mounting block (46).

4. The hydraulic cylinder piston removal fixture according to claim 3, characterized in that, The drive rod (41) is a threaded rod.

5. The hydraulic cylinder piston removal fixture according to claim 4, characterized in that, A guide post (5) is provided on the base (1) and located outside the mounting hole.

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