Hydraulic rod sleeve removal device

Abstract

The hydraulic rod retaining sleeve removal device of this invention includes a rotating assembly and an ejector assembly. The rotating assembly includes a connecting plate and a transmission frame. The hydraulic rod includes a cylinder, a piston rod, and a retaining sleeve. The connecting plate is detachably connected to the retaining sleeve and has a first communicating hole suitable for the piston rod to pass through. The lower end of the transmission frame is connected to the connecting plate and has a first receiving cavity suitable for accommodating the piston rod. The upper end of the connecting plate has a first transmission member suitable for connecting to a tool. The tool drives the retaining sleeve to rotate sequentially through the first transmission member, the transmission frame, and the connecting plate. The ejector assembly is located outside and connected to the rotating assembly. The ejector assembly includes an ejector member that can move up and down. The lower end of the ejector member abuts against the upper end of the cylinder. When the ejector member moves downward, it drives the rotating assembly to move upward, thereby driving the retaining sleeve to move upward. Therefore, the hydraulic rod retaining sleeve removal device of this invention has the characteristics of simple and convenient operation and high removal efficiency.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic rod maintenance technology, specifically relating to a hydraulic rod sleeve disassembly device. Background Technology

[0002] Hydraulic supports used in coal mining are equipped with a large number of hydraulic rods of various types, such as push cylinders, side support cylinders, and large uprights. During the maintenance of these hydraulic rods, it is necessary to remove the retaining sleeves at the cylinder inlet. The retaining sleeves are parts assembled between the cylinder body and the piston rod. Due to the dampness caused by dripping water in the underground fully mechanized mining face, rust will form between the retaining sleeves and the inner wall of the cylinder, making the retaining sleeves difficult to remove. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention provide a hydraulic rod sleeve disassembly device.

[0005] The hydraulic rod in the hydraulic rod retainer removal device of this embodiment includes a cylinder body, a piston rod, and a retainer. The hydraulic rod retainer removal device of this embodiment includes:

[0006] Rotating assembly, the rotating assembly comprising: A connecting plate, detachably connected to the retaining sleeve, the connecting plate having a first communicating hole suitable for the piston rod to pass through. A transmission frame, the lower end of which is connected to the connecting plate and has a first receiving cavity suitable for accommodating the piston rod, and the upper end of the connecting plate has a first transmission member suitable for connecting with the tool, the tool driving the retaining sleeve to rotate sequentially through the first transmission member, the transmission frame and the connecting plate; An ejector assembly is provided outside the rotating assembly and connected to the rotating assembly. The ejector assembly includes an ejector member that can move up and down. The lower end of the ejector member abuts against the upper end of the cylinder. When the ejector member moves downward, it drives the rotating assembly to move upward, which in turn drives the retaining sleeve to move upward.

[0007] The hydraulic rod retainer removal device of this invention uses a rotating component to rotate the retainer, causing loosening between the retainer and the cylinder. Then, the retainer is pushed out of the cylinder by the ejector component, thus removing the retainer. The operation is simple and convenient, greatly improving the disassembly efficiency and thus improving the maintenance efficiency of the hydraulic rod.

[0008] In some embodiments, the ejector assembly includes a first fixing member, which is annular and located outside the connecting plate and connected to the connecting plate. The first fixing member has a threaded hole, and the ejector is threadedly connected to the threaded hole. The lower end of the ejector abuts against the cylinder body. The ejector moves downward by rotation, which drives the connecting plate to move upward, thereby driving the retaining sleeve to move upward.

[0009] The hydraulic rod sleeve removal device of this invention provides a threaded hole on the first fixing member and connects the ejector to the threaded hole by thread. This allows the ejector to be rotated to move downwards, thereby driving the sleeve to move upwards and removing the sleeve from the cylinder.

[0010] In some embodiments, the ejection assembly further includes a second fixing member and a first connecting member. The second fixing member is disposed outside the transmission frame and connected to the transmission frame. The second fixing member is provided with a second through hole. The lower end of the first connecting member passes through the second through hole and is connected to the upper end of the ejection member. The upper end of the first connecting member is provided with a first toothed ring. It also includes a sleeve assembly, which includes a first sleeve and a second sleeve that are sleeved together. The second sleeve is rotatable relative to the first sleeve. The second sleeve is adapted to be connected and driven by the first transmission member. The upper end of the first sleeve is provided with a second transmission member adapted to be connected to a tool. The outer side of the first sleeve is provided with a second gear ring adapted to be connected and driven by the first gear ring.

[0011] In some embodiments, the rotating assembly further includes a second connector, through which the connecting disc is connected to the retaining sleeve.

[0012] In some embodiments, the connecting plate is provided with a third connecting hole, and the first connecting member passes through the third connecting hole to connect with the retaining sleeve and to the connecting plate.

[0013] In some embodiments, the connecting plate has a notch communicating with the first communicating hole, and the transmission frame has a window on one side corresponding to the notch for the piston rod to pass through.

[0014] The hydraulic rod sleeve removal device of this invention improves the convenience of the device by providing a notch on the connecting plate that connects to the first connecting hole, allowing the piston rod to enter the first connecting hole more easily.

[0015] In some embodiments, there are two ejector members, two fixing members and two connecting members. The two ejector members are evenly spaced along the circumference of the first fixing member, the two second fixing members are evenly spaced along the circumference of the first fixing member, and the two first connecting members are evenly spaced along the circumference of the first fixing member.

[0016] In some embodiments, the diameter of the connecting disc is smaller than the inner diameter of the cylinder.

[0017] In some embodiments, the diameter of the first fixing member is larger than the outer diameter of the cylinder body.

[0018] The hydraulic rod sleeve disassembly device of this invention makes it easier to set threaded holes by making the diameter of the first fixing member larger than the outer diameter of the cylinder body, so that the ejector can more easily abut against the upper end of the rod body.

[0019] In some embodiments, the lower end face of the connecting disc protrudes downward from the lower end face of the first fixing member.

[0020] The hydraulic rod sleeve disassembly device of this invention allows the lower end of the connecting disc to protrude downwards from the lower end of the first fixing member, making it easier to insert the connecting disc into the cylinder body and connect it to the sleeve. Attached Figure Description

[0021] Figure 1 This is a hydraulic rod sleeve disassembly device according to an embodiment of the present invention; Figure 2 This is a partial sectional view of the hydraulic rod sleeve disassembly device according to an embodiment of the present invention.

[0022] Icon labels: 100. Cylinder block; 200. Piston rod; 300, gear sleeve; 400. Rotating component; 500. Eject component; 1. Connecting plate; 101. First connecting hole; 102. Third connecting hole; 103. Notch; 2. Transmission frame; 201. First chamber; 203. First transmission component; 3. Ejector component; 4. First fastener; 401. Threaded hole; 5. Second fastener; 501. Second connecting hole; 6. First connecting component; 601. First gear ring; 7. Sleeve assembly; 701. First sleeve; 7011. Second gear ring; 7012. Second transmission component; 702. Second sleeve; 8. Second connector. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The following is in conjunction with the appendix Figure 1-2 This invention describes a hydraulic rod sleeve 300 disassembly device according to an embodiment of the present invention.

[0025] The hydraulic rod of the hydraulic rod retainer 300 disassembly device of this embodiment includes a cylinder body 100, a piston rod 200, and a retainer 300. The hydraulic rod retainer 300 disassembly device of this embodiment includes a rotating assembly 400 and an ejection assembly 500. The rotating assembly 400 includes a connecting plate 1 and a transmission frame 2. The connecting plate 1 is detachably connected to the retainer 300. The connecting plate 1 has a first connecting hole 101 suitable for the piston rod 200 to pass through. The lower end of the transmission frame 2 is connected to the connecting plate 1 and has a first receiving cavity 201 suitable for accommodating the piston rod 200. The upper end of the connecting plate 1 has a first transmission member 203 suitable for connecting with a tool. The tool drives the retainer 300 to rotate sequentially through the first transmission member 203, the transmission frame 2, and the connecting plate 1.

[0026] The ejector assembly 500 is located outside the rotating assembly 400 and connected to the rotating assembly 400. The ejector assembly 500 includes an ejector 3 that can move up and down. The lower end of the ejector 3 abuts against the upper end of the cylinder body 100. When the ejector 3 moves downward, it drives the rotating assembly 400 to move upward, which in turn drives the retaining sleeve 300 to move upward.

[0027] The hydraulic rod retainer sleeve 300 disassembly device of this invention uses a rotating component 400 to rotate the retainer sleeve 300, causing loosening between the retainer sleeve 300 and the cylinder body 100. Then, the ejector component 500 ejects the retainer sleeve 300 from the cylinder body 100, thus disassembling the retainer sleeve 300. The operation is simple and convenient, greatly improving the disassembly efficiency and thus improving the maintenance efficiency of the hydraulic rod.

[0028] Therefore, the hydraulic rod sleeve 300 disassembly device of this invention has the characteristics of simple and convenient operation and high disassembly efficiency.

[0029] The following is in conjunction with the appendix Figure 1-2 The hydraulic rod sleeve 300 disassembly device of the present invention will be described in further detail in an embodiment of the present invention.

[0030] The hydraulic rod of the hydraulic rod sleeve 300 disassembly device of this embodiment includes a cylinder body 100, a piston rod 200 and a sleeve 300. The hydraulic rod sleeve 300 disassembly device of this embodiment includes a rotating assembly 400 and an ejection assembly 500.

[0031] like Figure 1 As shown, the rotating assembly 400 includes a connecting plate 1 and a transmission frame 2. The connecting plate 1 is detachably connected to the retaining sleeve 300. The connecting plate 1 is a disc-shaped piece, and its diameter is smaller than the inner diameter of the cylinder body 100 so that the connecting plate 1 can be placed inside the cylinder body 100 and connected to the retaining sleeve 300. The connecting plate 1 has a first connecting hole 101 suitable for the piston rod 200 to pass through. When it is necessary to remove the retaining sleeve 300 of the hydraulic rod, the connecting plate 1 is inserted into the cylinder body 100 through the piston rod 200 and connected to the retaining sleeve 300. The lower end of the transmission frame 2 is connected to the connecting plate 1 and has a first receiving cavity 201 suitable for accommodating the piston rod 200. The upper end of the connecting plate 1 has a first transmission member 203 suitable for connecting to a tool. The tool drives the retaining sleeve 300 to rotate in sequence through the first transmission member 203, the transmission frame 2, and the connecting plate 1.

[0032] Optionally, the lower end of the connecting plate 1 protrudes downward from the lower end of the first fixing member 4. The hydraulic rod sleeve 300 disassembly device of this embodiment of the invention can more conveniently insert the connecting plate 1 into the cylinder body 100 and connect it to the sleeve 300 by having the lower end of the connecting plate 1 protrude downward from the lower end of the first fixing member 4.

[0033] It is understood that the tools mentioned here can be manual wrenches or automatic wrenches. Manual tools include wrenches, while automatic tools include electric wrenches, pneumatic wrenches, etc. The specific type of tool can be selected according to the actual work needs.

[0034] For example, the pneumatic wrench is connected to the first transmission. The pneumatic wrench drives the retaining sleeve 300 to rotate through the first transmission component 203, the transmission frame 2 and the connecting plate 1, so that the retaining sleeve 300 and the cylinder 100 are loosened, making it easier to push the retaining sleeve 300 out using the ejector assembly 500 later.

[0035] like Figure 1 As shown, the ejector assembly 500 is located outside the rotating assembly 400 and connected to the rotating assembly 400. The ejector assembly 500 includes an ejector 3 that can move up and down. The lower end of the ejector 3 abuts against the upper end of the cylinder body 100. When the ejector 3 moves downward, it drives the rotating assembly 400 to move upward, which in turn drives the retaining sleeve 300 to move upward and remove the retaining sleeve 300 from the cylinder body 100.

[0036] The hydraulic rod retainer sleeve 300 disassembly device of this invention uses a rotating component 400 to rotate the retainer sleeve 300, causing loosening between the retainer sleeve 300 and the cylinder body 100. Then, the ejector component 500 ejects the retainer sleeve 300 from the cylinder body 100, thus disassembling the retainer sleeve 300. The operation is simple and convenient, greatly improving the disassembly efficiency and thus improving the maintenance efficiency of the hydraulic rod.

[0037] In some embodiments, such as Figure 2As shown, the ejector assembly 500 also includes a first fixing member 4. The first fixing member 4 is annular and is located on the outside of the connecting plate 1 and connected to the connecting plate 1. The first fixing member 4 is provided with a threaded hole 401. The ejector 3 is threadedly connected to the threaded hole 401. The lower end of the ejector 3 abuts against the cylinder body 100. The ejector 3 moves downward by rotating, which drives the connecting plate 1 to move upward, and then drives the retaining sleeve 300 to move upward.

[0038] Optionally, the first fixing member 4 and the connecting plate 1 can be integrally molded, for example by casting, which can reduce the process steps in manufacturing this device and improve manufacturing efficiency.

[0039] Optionally, the diameter of the first fixing member 4 is greater than the outer diameter of the cylinder body 100.

[0040] The hydraulic rod sleeve 300 disassembly device of this embodiment of the invention makes it easier to set the threaded hole 401 by making the diameter of the first fixing member 4 larger than the outer diameter of the cylinder body 100, so that the ejector member 3 can more easily abut against the upper end of the rod body.

[0041] Optionally, the ejector 3 is a bolt, which is connected to the threaded hole 401 by a thread. By rotating the bolt, the bolt can be moved in the vertical direction. Thus, when the rotating assembly 400 causes the retaining sleeve 300 and the cylinder 100 to loosen, rotating the bolt causes the screw to move downward, which in turn drives the retaining sleeve 300 to move upward and remove the retaining sleeve 300 from the cylinder 100.

[0042] The hydraulic rod sleeve 300 disassembly device of this invention provides a threaded hole 401 on the first fixing member 4 and connects the ejector 3 to the threaded hole 401 by thread. This allows the ejector 3 to be rotated to move downward and thus drive the sleeve 300 to move upward, thereby removing the sleeve 300 from the cylinder 100.

[0043] In some embodiments, such as Figure 1 As shown, the ejector assembly 500 also includes a second fixing member 5 and a first connecting member 6. The second fixing member 5 is disposed on the outside of the transmission frame 2 and connected to the transmission frame 2. A second connecting hole 501 is provided on the second fixing member 5. The lower end of the first connecting member 6 passes through the second connecting hole 501 and is connected to the upper end of the ejector 3. A first gear ring 601 is provided on the upper end of the first connecting member 6. It also includes a sleeve assembly 7, which includes a first sleeve 701 and a second sleeve 702. The second sleeve 702 is located inside the first sleeve 701 and can rotate relative to the first sleeve 701. The second sleeve 702 is adapted to be connected and driven by the first transmission member 203. The upper end of the first sleeve 701 is provided with a second transmission member 7012 adapted to be connected to the tool. The outer side of the first sleeve 701 is provided with a second gear ring 7011 adapted to be connected and driven by the first gear ring 601.

[0044] The hydraulic rod sleeve 300 disassembly device of this invention is provided with a second fixing member 5 and a first connecting member 6. The lower end of the first connecting member 6 is connected to the upper end of the ejector member 3. Therefore, it can be driven simply by rotating the first connecting member 6.

[0045] like Figure 2 As shown, there are two of each of the first ejector 3, the first connector 6, and the second fixing member 5. The two first ejector 3, the two first connector 6, and the two second fixing members 5 are evenly spaced along the circumference of the first fixing member 4. It can also be understood that the two first ejector 3, the two first connector 6, and the two second fixing members 5 are symmetrical about the center of the first fixing member 4.

[0046] To enable the two first connecting parts 6 to rotate synchronously, as shown in the figure, the upper ends of the two first connecting parts 6 are provided with first gear rings 601. At the same time, a sleeve assembly 7 including a first cylinder 701 and a second cylinder 702 is provided on the first transmission member 203. The second cylinder 702 is rotatably connected to the first cylinder 701 and is adapted to be connected to the first transmission member 203. Meanwhile, the upper end of the first cylinder 701 is provided with a second transmission member 7012 adapted to be connected to a tool, and the outer side of the first cylinder 701 is provided with a second gear ring 7011 adapted to be connected and transmitted with the first gear ring 601.

[0047] Therefore, when the tool is connected to the second transmission component 7012 to drive the first cylinder 701 to rotate, the first cylinder 701 drives the ejector 3 to rotate through the first connecting component 6, so that the two first connecting components 6 can rotate synchronously, and the ejector 3 descends at the same speed, so that the sleeve 300 moves upward at the same speed, and there will be no tilting or deviation problem, which greatly improves the stability of the hydraulic rod sleeve 300 disassembly device.

[0048] At this time, the second cylinder 702 is connected to the first transmission component 203 for transmission. Since the first cylinder 701 and the second cylinder 702 are rotatably connected, the first cylinder 701 can rotate without driving the first cylinder 701 to rotate, and thus not drive the rotating component 400 to rotate. Therefore, the first cylinder 701 can drive the ejector 3 to rotate without affecting the rotating component 400.

[0049] In some embodiments, the hydraulic rod sleeve 300 disassembly device of the present invention further includes a second connector 8, and the connecting plate 1 is connected to the sleeve 300 through the second connector 8.

[0050] Optionally, the connecting plate 1 is provided with a third connecting hole 102, and the first connecting member 6 passes through the third connecting hole 102 to connect with the retaining sleeve 300 and to the connecting plate 1.

[0051] Optionally, the second connector 8 can be a bolt, which connects the lower end of the bolt to the retaining sleeve 300 by extending the lower end of the bolt into the third connecting hole, and the bolt head abuts against the connecting disc 1. Thus, the bolt connects and fixes the connecting disc 1 and the retaining sleeve 300 together.

[0052] Optionally, there may be multiple second connecting members 8, which are evenly spaced around the circumference of the connecting plate 1. Correspondingly, there may be multiple third connecting holes, also evenly spaced around the circumference of the connecting plate 1. The hydraulic rod retainer 300 disassembly device of this embodiment of the invention, by evenly spaced multiple second connecting members 8 around the circumference of the connecting plate 1, makes the connection between the connecting plate 1 and the retainer 300 more stable. Simultaneously, it allows the rotational vibration generated by the tool (wrench) to be better transmitted to the corroded portion between the retainer 300 and the cylinder 100, making it easier to loosen the retainer 300 and allowing for easier ejection of the retainer 300.

[0053] In some embodiments, such as Figure 1 As shown, the connecting plate 1 has a notch 103 that connects to the first connecting hole 101. The transmission frame 2 has a window on one side corresponding to the notch 103 for the piston rod 200 to pass through. The width of the notch 103 is greater than or equal to the diameter of the first connecting hole 101.

[0054] The hydraulic rod sleeve 300 disassembly device of this embodiment of the invention provides a notch 103 on the connecting plate 1 that connects to the first connecting hole 101, which makes it easier for the piston rod 200 to enter the first connecting hole 101, greatly improving the convenience of the hydraulic rod sleeve 300 disassembly device of this embodiment of the invention.

[0055] In the description of this invention, 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," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 limitations on this invention.

[0056] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly 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 part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for disassembling a hydraulic rod retainer (300), the hydraulic rod comprising a cylinder body (100), a piston rod (200), and a retainer (300), characterized in that, include: Rotating assembly (400), the rotating assembly (400) comprising: A connecting plate (1) is detachably connected to the retaining sleeve (300), and the connecting plate (1) has a first connecting hole (101) suitable for the piston rod (200) to pass through. The transmission frame (2) is connected at its lower end to the connecting plate (1) and has a first receiving cavity (201) suitable for accommodating the piston rod (200). The upper end of the connecting plate (1) has a first transmission member (203) suitable for connecting with the tool. The tool drives the retaining sleeve (300) to rotate in sequence through the first transmission member (203), the transmission frame (2) and the connecting plate (1). An ejector assembly (500) is located outside the rotating assembly (400) and connected to the rotating assembly (400). The ejector assembly (500) includes an ejector member (3) that can move up and down. The lower end of the ejector member (3) abuts against the upper end of the cylinder body (100). The ejector member (3) moves downward, causing the rotating assembly (400) to move upward, which in turn causes the retaining sleeve (300) to move upward. The ejector assembly (500) further includes a second fixing member (5) and a first connecting member (6). The second fixing member (5) is disposed on the outside of the transmission frame (2) and connected to the transmission frame (2). The second fixing member (5) is provided with a second connecting hole (501). The lower end of the first connecting member (6) passes through the second connecting hole (501) and is connected to the upper end of the ejector (3). The upper end of the first connecting member (6) is provided with a first toothed ring (601). It also includes a sleeve assembly (7), which includes a first sleeve (701) and a second sleeve (702) that are sleeved together. The second sleeve (702) is rotatable relative to the first sleeve (701). The second sleeve (702) is adapted to be connected and driven by the first transmission member (203). The upper end of the first sleeve (701) is provided with a second transmission member (7012) adapted to be connected to the tool. The outer side of the first sleeve (701) is provided with a second gear ring (7011) adapted to be connected and driven by the first gear ring (601).

2. The hydraulic rod retainer (300) disassembly device according to claim 1, characterized in that, The ejector assembly (500) includes a first fixing member (4), which is annular and located outside the connecting plate (1) and connected to the connecting plate (1). The first fixing member (4) is provided with a threaded hole (401). The ejector (3) is threadedly connected to the threaded hole (401). The lower end of the ejector (3) abuts against the cylinder body (100). The ejector (3) moves downward by rotation, which drives the connecting plate (1) to move upward, and then drives the retaining sleeve (300) to move upward.

3. The hydraulic rod retainer (300) disassembly device according to claim 1, characterized in that, The rotating assembly (400) further includes a second connector (8), through which the connecting disc (1) is connected to the retaining sleeve (300).

4. The hydraulic rod retainer (300) disassembly device according to claim 1, characterized in that, The connecting plate (1) is provided with a third connecting hole (102), and the first connecting member (6) passes through the third connecting hole (102) and is connected to the retaining sleeve (300) and the connecting plate (1).

5. A hydraulic rod retainer (300) disassembly device according to claim 1, characterized in that, The connecting plate (1) has a notch (103) that connects to the first connecting hole (101), and the transmission frame (2) has a window on one side corresponding to the notch (103) for the piston rod (200) to pass through.

6. A hydraulic rod retainer (300) disassembly device according to claim 2, characterized in that, There are two ejector (3), two fixing members (5) and two connecting members (6). The two ejector (3) are evenly spaced along the circumference of the first fixing member (4), the two second fixing members (5) are evenly spaced along the circumference of the first fixing member (4), and the two first connecting members (6) are evenly spaced along the circumference of the first fixing member (4).

7. The hydraulic rod retainer (300) disassembly device according to claim 1, characterized in that, The diameter of the connecting disc (1) is smaller than the inner diameter of the cylinder (100).

8. A hydraulic rod retainer (300) disassembly device according to claim 2, characterized in that, The diameter of the first fixing member (4) is greater than the outer diameter of the cylinder body (100).

9. A hydraulic rod retainer (300) disassembly device according to claim 2, characterized in that, The lower end of the connecting plate (1) protrudes downward from the lower end of the first fixing member (4).

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