A field portable universal hydraulic cylinder dismounting device

Abstract

This utility model discloses a portable, universal hydraulic cylinder disassembly device for field use, belonging to the field of hydraulic cylinder repair technology. It includes a main body with a lifting assembly at the top. The lifting assembly includes a lifting frame vertically slidably mounted within the main body, and a torque converter at the bottom. Clamping assemblies are connected to both the lifting frame and the torque converter. The two clamping assemblies are used to clamp cylinder head A and cylinder barrel B respectively. The torque converter drives the connected clamping assemblies to twist cylinder head A or cylinder barrel B. Compared with existing technologies, this portable, universal hydraulic cylinder disassembly device eliminates the need for manual disassembly of hydraulic cylinders using tools or large horizontal disassembly machines, reducing the time spent disassembling hydraulic cylinders and avoiding deformation and damage caused by uneven force on the hydraulic cylinder. It also eliminates the traditional step of disassembling by hammering.

Description

Technical Field

[0001] This utility model belongs to the field of field hydraulic cylinder repair technology, specifically, it relates to a portable and universal hydraulic cylinder disassembly device for field use. Background Technology

[0002] In the field of construction machinery, hydraulic systems, with their advantages of high power-to-weight ratio, fast response speed, and high control precision, have become the core system for power transmission and execution in various heavy equipment. As a key actuator in hydraulic systems, the hydraulic cylinder typically consists of core modules such as cylinder barrel assemblies, piston assemblies, sealing devices, and buffer devices. During the operation of a hydraulic system, the hydraulic cylinder converts the pressure energy of the fluid into mechanical energy, driving the load to achieve linear reciprocating motion or rotary motion. Its performance stability directly determines the overall operating efficiency and reliability of the hydraulic system.

[0003] Because hydraulic cylinders are subjected to high pressure, high-frequency reciprocating motion, and complex working conditions (such as dust, humidity, and extreme temperatures) for extended periods, their seals are prone to wear and aging, leading to frequent internal leakage failures. Internal leakage not only reduces the working efficiency of the hydraulic cylinder and causes load instability, but can also cause pressure fluctuations in the hydraulic system, thereby affecting the overall machine's operational accuracy and safety. Therefore, fault diagnosis and repair of hydraulic cylinders are crucial for ensuring the reliable operation of hydraulic systems.

[0004] In current hydraulic cylinder maintenance, disassembly is the core step. However, in field operations, hydraulic cylinders are exposed to harsh environments for extended periods, leading to rust and adhesion between the cylinder head and cylinder barrel, making disassembly difficult. In particular, the clearance between the piston and cylinder barrel, and between the guide sleeve and piston rod, is exacerbated by rust or wear, further increasing the difficulty of disassembly. Existing techniques mainly rely on manual disassembly, requiring the cylinder body to be fixed before forcibly separating it through hammering, prying, or other methods. However, this method has the following drawbacks:

[0005] ① Inefficient: Manual operation is time-consuming and requires a large amount of manpower;

[0006] ② High risk of damage: Uneven force during operation can easily lead to deformation or damage to the cylinder head and cylinder barrel;

[0007] ③ Significant safety hazards: When disassembling the guide sleeve, using tools such as copper rods to strike it can easily damage the piston rod threads and even cause safety accidents.

[0008] To address the aforementioned issues, existing solutions on the market primarily rely on large horizontal disassembly and assembly machines. While these machines can achieve automated disassembly through hydraulic or mechanical force, they suffer from the following limitations:

[0009] ① Poor portability: The equipment is bulky and needs to be fixedly installed in the maintenance workshop, which cannot meet the needs of field or remote areas.

[0010] ② High transportation costs: In remote areas, hydraulic cylinders need to be sent to repair points in prefecture-level cities. The long transportation distance and long cycle lead to a surge in maintenance costs.

[0011] ③ Weak emergency response capability: Under field conditions, when hydraulic cylinder oil seals are damaged, the lack of on-site repair capabilities seriously affects the progress of engineering tasks. Utility Model Content

[0012] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a portable and universal hydraulic cylinder disassembly device for field use.

[0013] To achieve the aforementioned objectives, the technical solution adopted by this utility model includes:

[0014] The device body has a lifting assembly at its top, which includes a lifting frame that slides vertically within the device body. A torque generator is located at the bottom of the device body. Clamping assemblies are connected to both the lifting frame and the torque generator. The two clamping assemblies are used to clamp cylinder head A and cylinder barrel B, respectively. The torque generator is used to drive the clamping assemblies connected to it to twist cylinder head A or cylinder barrel B.

[0015] In this invention, a hydraulic cylinder is placed inside the main body of the device and connected to a clamping assembly connected to a torque generator. The clamping assembly clamps the cylinder barrel B of the hydraulic cylinder. The lifting assembly drives the lifting frame to move vertically, thereby moving the clamping assembly connected to the lifting frame to clamp the cylinder head A. Then, the torque generator twists the cylinder barrel B to separate the cylinder barrel B from the cylinder head A, thus allowing the guide sleeve and piston rod inside the cylinder barrel B to be disassembled.

[0016] Preferably, the lifting assembly includes a lifting motor mounted on the main body of the device, the lifting motor being driven by a threaded rod, and the lifting motor driving the lifting frame to slide along the main body of the device through the threaded rod and nut.

[0017] In this invention, the lifting motor drives the threaded rod to rotate, causing the nut to move the lifting frame vertically. This adjusts the position of the clamping component according to the size of the hydraulic cylinder, enabling the clamping component to clamp the cylinder head A. This allows the portable universal hydraulic cylinder disassembly device to be used for disassembling hydraulic cylinders of different sizes, improving the versatility of the portable universal hydraulic cylinder disassembly device.

[0018] Preferably, the main body of the device has two sliding grooves, each of which is slidably connected to a slide rail, and both slide rails are connected to a lifting frame.

[0019] In this invention, the slide rail moves along the length of the groove and works in conjunction with the threaded rod to restrict the degree of freedom of the lifting frame, allowing it to move only vertically, thereby guiding the movement of the lifting frame.

[0020] Preferably, the torque machine includes a drive motor, and the drive end of the drive motor is connected to the clamping assembly.

[0021] In this invention, the clamping assembly connected to it is driven to rotate by a drive motor, which provides power for the clamping assembly to twist the cylinder B.

[0022] Preferably, the main body of the device has a mounting slot for mounting a drive motor, and a cover plate is provided on the opening of the mounting slot.

[0023] In this invention, the cover plate design prevents dust and debris from entering the mounting slot while allowing the mounting slot to be opened periodically for inspection and maintenance of the drive motor.

[0024] Preferably, the clamping assembly includes a mounting plate with two adjustment slots. Each adjustment slot has a sliding block slidably connected to it. Each sliding block has a clamping plate connected to its top. A return spring is fixedly connected to the opposite side of each sliding block, and the return spring is connected to the inner wall of the adjustment slot.

[0025] In this invention, the elastic force of the return spring is used to enable the two clamping plates of the same clamping assembly to clamp the cylinder B or cylinder head A at the corresponding positions.

[0026] Preferably, each of the sliding blocks has a guide hole, each of the guide holes has a guide post slidably connected to it, and each guide post is fixedly connected to the inner wall of the adjusting groove.

[0027] In this invention, the relative sliding of the sliding block and the guide post restricts the degree of freedom of the sliding block, allowing it to move only along the length of the guide post. This prevents the sliding block from detaching from the vertical direction of the mounting plate and improves the connection stability between the sliding block and the mounting plate.

[0028] Preferably, a limiting ring is fixedly connected to one end of the guide post that extends into the guide hole, and a limiting port adapted to the limiting ring is provided in the guide hole.

[0029] In this invention, the sliding range of the guide post inside the sliding block is limited by the sliding of the limiting ring inside the limiting port, thereby preventing the connection between the sliding block and the guide post from breaking and improving the connection stability between the sliding block and the guide post.

[0030] Compared with the prior art, the advantages of this utility model include:

[0031] (1) The present invention provides a portable universal hydraulic cylinder disassembly device for field use. Compared with the prior art, it has a simple structure, small size, is easy to carry, and is conducive to the disassembly and maintenance of hydraulic cylinders in the field.

[0032] (2) The present invention provides a portable universal hydraulic cylinder disassembly device that can move the clamping component connected to the lifting frame to clamp the cylinder head A, and then twist the cylinder barrel B through the torque machine to separate the cylinder barrel B from the cylinder head A. The guide sleeve and piston rod inside the cylinder barrel B can be disassembled. Compared with the prior art, there is no need to manually disassemble the hydraulic cylinder with the aid of tools, nor is there a need to use a large horizontal disassembly and assembly machine. This reduces the time consumed in disassembling the hydraulic cylinder and avoids deformation and damage caused by uneven force on the hydraulic cylinder. It eliminates the traditional disassembly steps by hammering, so that the operator can safely perform the disassembly operation of the cylinder head A and the cylinder barrel B during the disassembly of the hydraulic cylinder.

[0033] (3) The present invention provides a portable universal hydraulic cylinder disassembly device for field use. It is small in size, convenient to transport even in remote areas, and can be carried and used in field conditions, with strong emergency response capability.

[0034] (4) The present invention provides a portable universal hydraulic cylinder disassembly device for field use. The lifting frame is driven to move vertically by the lifting component. The position of the clamping component is adjusted according to the size of the hydraulic cylinder so that the clamping component can clamp the cylinder head A. This makes the portable universal hydraulic cylinder disassembly device for field use applicable to the disassembly of hydraulic cylinders of different sizes, thus improving the versatility of the portable universal hydraulic cylinder disassembly device for field use. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an exploded view of the portable and universal hydraulic cylinder disassembly device for field use in this utility model.

[0037] Figure 2 This is a schematic diagram of the connection structure of the lifting component in this utility model;

[0038] Figure 3 This is a schematic diagram of the slide groove in this utility model;

[0039] Figure 4 This is a schematic diagram of the connection structure of the clamping component in this utility model;

[0040] Figure 5 This is a schematic diagram of the guide column in this utility model;

[0041] Figure 6 for Figure 3 Enlarged view of the structure at point C;

[0042] Figure 7 This is a schematic diagram of the structure of a hydraulic cylinder in the prior art.

[0043] Figure label:

[0044] 1. Main body of the device; 2. Clamping assembly; 21. Mounting plate; 22. Clamping plate; 23. Sliding block; 24. Return spring; 25. Guide column; 26. Adjustment groove; 27. Limiting ring; 3. Torque meter; 31. Drive motor; 32. Cover plate; 4. Lifting assembly; 41. Lifting frame; 42. Slide rail; 43. Threaded rod; 44. Mounting hole; 45. Nut; 46. Lifting motor; 47. Mounting base; 48. Slide groove; 5. Upper clamping part; 6. Lower clamping part. Detailed Implementation

[0045] In view of the shortcomings of the prior art, the inventor of this utility model has, through long-term research and extensive practice, proposed the technical solution of this utility model. The following will further explain and illustrate the technical solution, its implementation process, and its principles in conjunction with the accompanying drawings and specific implementation examples.

[0046] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made within the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0048] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not 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 limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0049] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0050] This utility model embodiment aims to introduce and explain the structural composition of the portable universal hydraulic cylinder disassembly device for field use and the cooperation relationship between the various components. Unless otherwise specified, the dimensions, materials, and manufacturing processes of each component in the portable universal hydraulic cylinder disassembly device for field use in this utility model embodiment can be selected according to specific circumstances, and no special limitations or explanations are made here.

[0051] Furthermore, to provide the public with a better understanding of this utility model, certain specific details are described in detail in the following description. However, those skilled in the art can fully understand this utility model even without these detailed descriptions. Example

[0052] Please see Figure 1 and Figure 2 This embodiment discloses a portable universal hydraulic cylinder disassembly device for field use, including a device body 1.

[0053] Specifically, the main body 1 of the device has a disassembly space for disassembling the hydraulic cylinder.

[0054] Please see Figure 4 , Figure 5 and Figure 7 This embodiment discloses a portable universal hydraulic cylinder disassembly device for field use, including two clamping components 2.

[0055] Specifically, the clamping assembly 2 includes two clamping plates 22, and a sliding block 23 is fixedly connected to the bottom of each clamping plate 22. Guide holes are opened in the two sliding blocks 23, and guide posts 25 are inserted into the two guide holes. Limiting rings 27 are fixedly connected to one end of each guide post 25 extending to the guide hole. Limiting openings adapted to the limiting rings 27 are opened in the guide holes. An installation plate 21 is provided between the two guide posts 25. Two adjustment slots 26 are opened in the installation plate 21. The two guide posts 25 are fixedly connected to the corresponding adjustment slots 26. A return spring 24 is fixedly connected to each of the two adjustment slots 26. The return spring 24 is fixedly connected to the corresponding sliding block 23.

[0056] Specifically, the two clamping components 2 are divided into an upper clamping part 5 and a lower clamping part 6 according to their height position. The upper clamping part 5 is connected to the lifting component 4 through the mounting plate 21, and the lower clamping part 6 is connected to the torque machine 3 through the mounting plate 21.

[0057] In this embodiment, the ends of both clamping plates 22 are chamfered. The two clamping plates 22 can be spread apart by the relative compression between the cylinder head A or cylinder B and the two clamping plates 22, so that the return spring 24 is deformed. When the two clamping plates 22 clamp the cylinder head A or cylinder B, the elastic force of the return spring 24 can provide support for the two clamping plates 22.

[0058] In this embodiment, one clamping component 2 is used to clamp the cylinder head A, and the other clamping component 2 is used to clamp the cylinder barrel B.

[0059] Please see Figure 1 This embodiment discloses a portable universal hydraulic cylinder disassembly device for field use, including a torque generator 3.

[0060] Specifically, the torque machine 3 includes a drive motor 31, the drive end of the drive motor 31 is fixedly connected to the mounting plate 21 of the lower clamping part 6, and the main body 1 of the device is provided with a mounting groove for mounting the drive motor 31, and a cover plate 32 is provided on the groove opening.

[0061] In this embodiment, firstly, the hydraulic cylinder is inserted into the lower clamping part 6 on the torque machine 3, and then the lifting assembly 4 is activated to fix the cylinder head A of the hydraulic cylinder.

[0062] Please see Figure 2 , Figure 3 and Figure 6 This embodiment discloses a portable universal hydraulic cylinder disassembly device for field use, including a lifting assembly 4.

[0063] Specifically, the lifting assembly 4 includes a lifting frame 41 that is vertically slidably disposed in the disassembly space. The mounting plate 21 of the upper clamping part 5 is fixedly connected to the lifting frame 41. The lifting frame 41 extends to the outside of the device body 1 and has a through mounting hole 44. A nut 45 is fixedly connected in the mounting hole 44. A threaded rod 43 is threadedly connected in the nut 45. A lifting motor 46 is fixedly connected to one end of the threaded rod 43, and a mounting base 47 is fixedly connected to the other end of the threaded rod 43. Both the lifting motor 46 and the mounting base 47 are fixedly connected to the device body 1.

[0064] Furthermore, the lifting frame 41 includes two slide rails 42 fixedly installed on both sides, and two slide grooves 48 are opened in the main body 1 of the device, with the two slide rails 42 slidably connected to the two slide grooves 48 at corresponding positions.

[0065] It should be noted that the disassembly space is open-ended. The parts on both sides of the main body 1 used to open the slide grooves 48 are columns. The front area of ​​the disassembly space is used to place the hydraulic cylinder into the disassembly space, while the rear area of ​​the disassembly space is blocked by the threaded rod 43.

[0066] In this embodiment, the lifting assembly 4 is specifically used to drive the upper clamping part 5 to press down and clamp the cylinder head A of the hydraulic cylinder, and the clamping assembly 2 connected to the drive motor 31 is used to clamp the cylinder barrel B. In other embodiments, the lifting assembly 4 is used to drive the upper clamping part 5 to press down and clamp the cylinder barrel B of the hydraulic cylinder, and the clamping assembly 2 connected to the drive motor 31 is used to clamp the cylinder head A.

[0067] In this embodiment, the hydraulic cylinder is placed in the disassembly space, and then the lifting motor 46 is started, causing the threaded rod 43 to rotate. The nut 45 will move with the rotation of the threaded rod 43, thereby driving the lifting frame 41 connected to it to move along the direction guided by the two slide rails 42 until the two clamping plates 22 of the upper clamping part 5 are pressed against the cylinder head A. The cylinder head A is clamped by the elastic force of the return spring 24, thereby completing the fixing of the cylinder head A.

[0068] In this embodiment, the specific disassembly and maintenance steps of the hydraulic cylinder are as follows:

[0069] S1. Insert the cylinder B of the hydraulic cylinder into the lower clamping part 6. Specifically, the cylinder B presses against the two clamping plates 22, causing the two clamping plates 22 to expand outward from the mounting plate 21, and the return spring 24 deforms. When the cylinder B is inserted between the two clamping plates 22, the elastic force of the return spring 24 drives the two clamping plates 22 to clamp the cylinder B.

[0070] S2. Start the lifting motor 46, causing the threaded rod 43 to rotate. The nut 45 will move with the rotation of the threaded rod 43, thereby driving the lifting frame 41 connected to it to move towards the cylinder head A in the direction guided by the two slide rails 42, until the two clamping plates 22 of the upper clamping part 5 are pressed against the cylinder head A, and the cylinder head A is clamped by the elastic force of the return spring 24.

[0071] S3. Start the drive motor 31 to make the lower clamping part 6 connected to it drive the cylinder B to rotate, so that the two clamping components 2 interact to unscrew and separate the cylinder head A and the cylinder B, so that the guide sleeve and piston rod inside the cylinder B can be taken out for maintenance.

[0072] It should be understood that the above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. It should not be considered that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A portable, universal hydraulic cylinder disassembly device for field use, characterized in that, The device includes a main body (1), a lifting assembly (4) is provided on the top of the main body (1), the lifting assembly (4) includes a lifting frame (41) that is vertically slidably disposed in the main body (1), a torque machine (3) is provided on the bottom of the main body (1), and clamping assemblies are connected to both the lifting frame (41) and the torque machine (3). The two clamping assemblies are used to clamp cylinder head A and cylinder B respectively, and the torque machine (3) is used to drive the clamping assembly (2) connected thereto to twist cylinder head A or cylinder B.

2. The field-portable universal hydraulic cylinder dismounting device according to claim 1, characterized in that The lifting assembly (4) includes a lifting motor (46) installed on the main body (1) of the device. The lifting motor (46) drives the lifting frame (41) to slide along the main body (1) of the device through a threaded rod (43) and a nut (45).

3. The field-portable universal hydraulic cylinder dismounting device according to claim 1, characterized in that: The main body (1) of the device has two slide grooves (48), and each of the two slide grooves (48) is slidably connected to a slide rail (42), and both slide rails (42) are connected to the lifting frame (41).

4. The field-portable universal hydraulic cylinder dismounting device of claim 1, wherein: The torque machine (3) includes a drive motor (31), the drive end of which is connected to one of the clamping components (2).

5. The field-portable universal hydraulic cylinder dismounting device according to claim 4, characterized in that The main body (1) of the device has an installation slot for installing a drive motor (31), and a cover plate (32) is provided on the opening of the installation slot.

6. The field-portable universal hydraulic cylinder dismounting device of claim 1, wherein: The clamping assembly (2) includes a mounting plate (21) with two adjustment slots (26) on the mounting plate (21). Sliding blocks (23) are slidably connected in both adjustment slots (26). A clamping plate (22) is connected to the top of each sliding block (23). A return spring (24) is fixedly connected to the opposite side of each of the two sliding blocks (23). The return spring (24) is connected to the inner wall of the adjustment slot (26).

7. The field-portable universal hydraulic cylinder dismounting device according to claim 6, characterized in that Each of the sliding blocks (23) has a guide hole, and each of the guide holes has a guide post (25) slidably connected to it. Each of the guide posts (25) is fixedly connected to the inner wall of the adjusting groove (26).

8. A portable, universal hydraulic cylinder disassembly device for field use according to claim 7, characterized in that: One end of the guide post (25) extending into the guide hole is fixedly connected to a limiting ring (27), and a limiting port adapted to the limiting ring (27) is provided in the guide hole.

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