Tool for disassembling and assembling cylinder sleeve gland

Abstract

The utility model belongs to the field of tools enabling a cylinder sleeve gland of a cylinder body to be easy to disassemble and assemble, and particularly relates to a tool for disassembling and assembling the cylinder sleeve gland. The utility model provides a tool for disassembling and assembling a cylinder sleeve gland in order to achieve the purposes that the cylinder sleeve gland is convenient to disassemble and assemble quickly, manpower is saved, and the service life of the tool is prolonged. The tool for disassembling and assembling the cylinder sleeve gland comprises a shell, a rotating shaft and a guide rod used for being fixedly installed on a bolt of a cylinder body, and a transmission gear is installed on the rotating shaft. The axial direction of the rotating shaft is the front-back direction, and a guide hole extending in the front-back direction is formed in the shell. A front axial stop structure and a rear axial stop structure are arranged at the end, close to the cylinder sleeve pressing sleeve, of the shell, and a space allowing part of the cylinder sleeve pressing cover to be inserted in the using process is formed between the front axial stop structure and the rear axial stop structure. And the rotating shaft moves along with the cylinder sleeve gland, so that the transmission gear and the straight tooth type transmission structure always have a relatively large meshing contact area, and the service life of the tool for disassembling and assembling the cylinder sleeve gland is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of tools for facilitating the disassembly and assembly of a cylinder liner gland of a cylinder body, in particular to a tool for disassembly and assembly of the cylinder liner gland. Background Art

[0002] The cylinder liner is a consumable part in the mud pump cylinder and needs to be replaced frequently during the drilling process. During this process, the mud pump cylinder cannot operate. Therefore, shortening the time required to replace the cylinder liner can effectively improve drilling efficiency.

[0003] To facilitate rapid cylinder liner replacement, a Chinese invention patent application with publication number CN118110663A and a publication date of May 31, 2024, discloses a quick-release device for a mud pump cylinder block and liner. The device comprises a cylinder liner gland and a transmission component. The gland is provided with a threaded section with external threads adapted to mate with internal threads on the cylinder liner flange. The gland also features a spur-tooth transmission structure. The transmission component comprises a housing secured to the cylinder liner flange and a gear shaft (equivalent to a rotating shaft) rotatably assembled within the housing. The gear shaft has a gear portion. One end of the gear shaft has a connection portion for transmission connection to an electric tool (equivalent to a force-applying device).

[0004] When replacing the cylinder liner, first install the cylinder liner gland into the cylinder liner and make the straight tooth transmission structure engage with the gear part. Then, use an electric tool to drive the gear shaft to rotate, and the gear shaft drives the cylinder liner gland to rotate. The external thread on the cylinder liner gland cooperates with the internal thread on the cylinder liner flange, so that the cylinder liner gland drives the cylinder liner to move straight.

[0005] However, when using the aforementioned cylinder liner quick-release device, the gear shaft only rotates, while the cylinder liner gland rotates and translates. When the gear shaft initially rotates, the axial length of engagement between the gear shaft and the spur gear transmission structure is relatively short. This means the contact area between the gear shaft and the spur gear transmission structure is relatively small. Consequently, the pressure at the contact point between the gear shaft and the spur gear transmission structure is relatively high, which can easily damage the gear shaft and the spur gear transmission structure, resulting in a shorter service life for the aforementioned cylinder liner quick-release device. Utility Model Content

[0006] The purpose of the utility model is to provide a tool for disassembling and assembling a cylinder liner gland, so as to solve the technical problem that the gear shaft and the spur gear transmission structure in the existing cylinder liner quick-release device are easily damaged, resulting in a short service life of the existing cylinder liner quick-release device.

[0007] To achieve the above-mentioned purpose, the technical solution of the tooling for disassembling and assembling the cylinder liner gland provided by the present invention is:

[0008] A tool for disassembling and assembling a cylinder liner gland comprises a housing and a rotating shaft rotatably assembled in the housing, one end of the rotating shaft has a connecting portion for transmission connection with a force-applying device, the rotating shaft has a gear portion for meshing and contacting with a spur-tooth transmission structure provided on the cylinder liner gland, or a transmission gear for meshing and contacting with a spur-tooth transmission structure provided on the cylinder liner gland is installed on the rotating shaft; the axial direction of the rotating shaft is defined as the front-to-back direction, the tool for disassembling and assembling a cylinder liner gland further comprises a guide rod mounted on a bolt of the cylinder body, and the housing is provided with a guide rod extending in the front-to-back direction. The guide hole is used for inserting the guide rod when disassembling and assembling the cylinder liner cover; the shell is provided with a front axial stop structure and a rear axial stop structure at one end close to the cylinder liner cover, and a space for inserting part of the cylinder liner cover when in use is formed between the front axial stop structure and the rear axial stop structure, the rear part of the front axial stop structure constitutes a front axial stop portion for cooperating with the cylinder liner cover stop when the cylinder liner cover moves forward, and the front part of the rear axial stop structure constitutes a rear axial stop portion for cooperating with the cylinder liner cover stop when the cylinder liner cover moves backward.

[0009] Furthermore, the front axial stop structure and the rear axial stop structure are arranged opposite to each other in the front-to-back direction.

[0010] Furthermore, the tooling for disassembling and assembling the cylinder liner gland further includes a cylinder liner gear, which is used to be fixedly mounted on the cylinder liner gland that does not have a spur gear transmission structure, and the tooth portion of the cylinder liner gear constitutes the spur gear transmission structure.

[0011] Furthermore, the tooling for disassembling and assembling the cylinder liner gland also includes a cylinder liner gear, which is mounted on a cylinder liner gland that does not have a spur gear transmission structure, and the tooth portion of the cylinder liner gear constitutes the spur gear transmission structure; the cylinder liner gear includes a circumferential stop portion that cooperates with the cylinder liner gland along the circumferential stop.

[0012] Furthermore, the front axial stop structure is a front axial stop plate, and the rear surface of the front axial stop plate constitutes the front axial stop portion; the rear axial stop structure is a rear axial stop plate, and the front surface of the rear axial stop plate constitutes the rear axial stop portion.

[0013] Furthermore, each axial stop portion is provided with a ball to reduce the friction between each axial stop portion and the cylinder liner gland.

[0014] Furthermore, one end of the guide rod has a hexagonal socket for matching with a bolt head of a corresponding bolt.

[0015] Furthermore, the shell is also provided with a sling connection structure for cooperating with a sling for lifting.

[0016] Furthermore, the connecting portion includes two clamped surfaces arranged opposite to each other and used to be clamped by the force applying device.

[0017] Furthermore, the number of the guide rods and the number of the guide holes are the same, and there are at least two guide rods, wherein the two guide holes are respectively located on both sides of the rotating shaft.

[0018] The beneficial effects of the tooling for disassembling and assembling the cylinder liner gland of the present invention are as follows: the present invention is an improved invention. Since a guide hole is provided on the housing, and the housing cooperates with the guide rod in the front-to-back direction through the guide hole, the rotating shaft located in the housing can move with the cylinder liner gland when disassembling and assembling the cylinder liner gland (i.e., disassembling and assembling the cylinder liner). Specifically, when installing the cylinder liner, the rotating shaft rotates to drive the cylinder liner gland to rotate, and the cylinder liner gland moves forward while rotating. After the cylinder liner gland engages with the front axial stop portion, the cylinder liner gland drives the rotating shaft in the housing to move forward, thereby ensuring that the gear portion (or transmission gear) and the spur gear transmission structure have a larger meshing contact area, thereby reducing the pressure at the meshing contact point between the gear portion (or transmission gear) and the spur gear transmission structure, and improving the service life of the tooling for disassembling and assembling the cylinder liner gland. Similarly, when removing the cylinder liner, the cylinder liner cover moves backward while rotating. After the cylinder liner cover engages with the rear axial stop portion, the cylinder body drives the rotating shaft in the housing to move backward, thereby ensuring that the gear part (or transmission gear) and the spur gear transmission structure have a larger meshing contact area, thereby reducing the pressure at the meshing contact point between the gear part (or transmission gear) and the spur gear transmission structure, and improving the service life of the tooling used for disassembly and assembly of the cylinder liner cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a side view of the specific embodiment 1 of the tool for disassembling and assembling the cylinder liner gland of the utility model when in use;

[0020] Figure 2 This is a cross-sectional view of a specific embodiment 1 of the tooling for disassembling and assembling a cylinder liner gland of the present invention when in use;

[0021] Figure 3 This is a structural schematic diagram of a specific embodiment 1 of the tooling for disassembling and assembling a cylinder liner gland of the present invention when in use;

[0022] Figure 4 This is a front view of a specific embodiment 1 of the tooling for disassembling and assembling the cylinder liner gland of the present invention;

[0023] Figure 5 This is a cross-sectional view of a specific embodiment 1 of the tooling for disassembling and assembling the cylinder liner gland of the present invention;

[0024] Figure 6 This is a front view of a specific embodiment 1 of the tooling for disassembling and assembling the cylinder liner gland of the utility model after being installed on the cylinder liner gland;

[0025] Figure 7 This is a cross-sectional view of a specific embodiment 1 of the tooling for disassembling and assembling the cylinder liner gland of the utility model after being installed on the cylinder liner gland;

[0026] Figure 8 This is a structural schematic diagram of a specific embodiment of the cylinder liner gland disassembly and assembly tool with two openings in specific embodiment 1 of the present invention;

[0027] Figure 9 This is a cross-sectional view of a specific embodiment 2 of the tooling for disassembling and assembling the cylinder liner gland of the present invention;

[0028] Figure 10 This is a cross-sectional view of a specific embodiment 3 of the tooling for disassembling and assembling the cylinder liner gland of the present invention.

[0029] Description of reference numerals:

[0030] 1. Cylinder body; 2. Bolt; 3. Guide rod; 4. Housing; 4-1. Axial stop; 4-2. Opening cavity location; 5. Lifting ring; 6. Cylinder liner; 7. Cylinder liner gear; 7-1. Circumferential stop; 8. Rotating shaft; 9. Cylinder liner gland; 10. Transmission gear; 11. Ball bearing. DETAILED DESCRIPTION

[0031] In order to solve the problems in the background technology, the core inventive concept of the present utility model is: to make the housing and the cylinder liner cover cooperate with each other in the front and rear directions to ensure that the rotating shaft can move with the cylinder liner cover, thereby ensuring that the gear part (or transmission gear) and the straight tooth transmission structure always have a large meshing contact area.

[0032] The present invention is further described in detail below with reference to the embodiments.

[0033] Specific embodiment 1 of the tooling for disassembling and assembling the cylinder liner gland provided by the utility model:

[0034] like Figures 1 to 7As shown, in order to extend the service life of the cylinder liner gland disassembly and assembly tool, as a first specific embodiment, the cylinder liner gland disassembly and assembly tool includes a shell 4 and a rotating shaft 8 rotatably assembled in the shell 4, one end of the rotating shaft 8 has a connecting portion for transmission connection with the force-applying device, and a transmission gear 10 is installed on the rotating shaft 8 for meshing with the straight-tooth transmission structure provided on the cylinder liner gland 9; the axial direction of the rotating shaft 8 is defined as the front-to-back direction, and the cylinder liner gland disassembly and assembly tool also includes a guide rod 3 for being installed on the bolt 2 of the cylinder body 1, and the shell 4 is provided with a The guide hole is used for inserting the guide rod 3 when disassembling and assembling the cylinder liner cover 9; the housing 4 is provided with a front axial stop structure and a rear axial stop structure at one end close to the cylinder liner cover 9, and a space for inserting part of the cylinder liner cover 9 when in use is formed between the front axial stop structure and the rear axial stop structure, and the rear part of the front axial stop structure constitutes a front axial stop portion for cooperating with the cylinder liner cover 9 stop when the cylinder liner cover 9 moves forward, and the front part of the rear axial stop structure constitutes a rear axial stop portion for cooperating with the cylinder liner cover 9 stop when the cylinder liner cover 9 moves backward.

[0035] In various specific implementations of this embodiment, the cylinder liner gland 9 itself does not include a spur gear transmission structure, so it is necessary to provide a cylinder liner gear 7 with a spur gear transmission structure on the cylinder liner gland 9 .

[0036] In a first embodiment, Figures 1 to 7 As shown, the cylinder liner gear 7 is mounted on the cylinder liner cover 9 (at this time, axial relative sliding can occur between the cylinder liner gear 7 and the cylinder liner cover 9), and the tooth portion of the cylinder liner gear 7 constitutes the above-mentioned straight tooth transmission structure. The cylinder liner gear 7 also includes a circumferential stop portion 7-1 that cooperates with the cylinder liner cover 9 along the circumferential stop. The circumferential stop portion 7-1 can drive the cylinder liner cover 9 to rotate when the cylinder liner gear 7 rotates.

[0037] In the second embodiment, referring to Figures 1 to 7 As shown, the cylinder liner gear 7 can also be used to be fixedly installed on the cylinder liner cover 9 (in this case, the cylinder liner gear 7 and the cylinder liner cover 9 are fixed as one, that is, no relative movement can occur between the cylinder liner gear 7 and the cylinder liner cover 9) to ensure that the cylinder liner gear 7 can drive the cylinder liner cover 9 to rotate.

[0038] In other embodiments except the first embodiment, Figures 1 to 7 On the basis of the above, referring to the rotating shaft 8 in the Chinese invention patent application with application publication number CN118110663A, the rotating shaft 8 may also have a gear portion for engaging with the straight tooth transmission structure provided on the cylinder liner cover 9. In this case, there is no need to provide the transmission gear 10.

[0039] In various specific embodiments of the present invention, since a guide hole is provided on the shell 4, and the shell 4 is guided and moved in cooperation with the guide rod 3 in the front-to-rear direction through the guide hole, when the cylinder liner cover 9 is disassembled and assembled (i.e., the cylinder liner 6 is disassembled and assembled), the rotating shaft 8 located in the shell 4 can move with the cylinder liner cover 9, thereby ensuring that the gear part (or transmission gear 10) and the spur gear transmission structure have a larger meshing contact area, thereby reducing the pressure at the meshing contact point of the gear part (or transmission gear 10) and the spur gear transmission structure, and improving the service life of the tooling for disassembling and assembling the cylinder liner cover.

[0040] Specifically, if Figures 1 to 7 As shown, when installing the cylinder liner 6, a force-applying device such as a rotary power source is used to drive the rotating shaft 8 to rotate in the forward direction, and the rotating shaft 8 drives the cylinder liner cover 9 to rotate in the forward direction. The cylinder liner cover 9 is threadedly engaged with the cylinder body 1 and moves forward. After the cylinder liner cover 9 is engaged with the front axial stop portion, the cylinder liner cover 9 drives the housing 4 to move forward until the cylinder liner 6 is installed; when removing the cylinder liner 6, a rotary power source is used to drive the rotating shaft 8 to rotate in the reverse direction. The rotating shaft 8 drives the cylinder liner cover 9 to rotate in the reverse direction. The cylinder liner cover 9 is threadedly engaged with the cylinder body 1 and moves backward. After the cylinder liner cover 9 is engaged with the rear axial stop portion, the cylinder liner cover 9 drives the housing 4 to move backward until the cylinder liner cover 9 is removed.

[0041] It should be noted that in various specific implementations of this embodiment, a rotary power source such as a rotary motor, rotary cylinder, electric wrench, or pneumatic wrench needs to be moved when disassembling or assembling the cylinder liner 6. The connection portion on the rotating shaft 8 is in transmission connection with the rotary power source such as the rotary motor, rotary cylinder, electric wrench, or pneumatic wrench.

[0042] exist Figures 1 to 7 In a first specific embodiment, the connecting portion includes two clamped surfaces arranged opposite to each other and used to be clamped by the force applying device. Specifically, the connecting portion is a quadrangular prism.

[0043] In other embodiments except the first embodiment, refer to Figures 1 to 7 As shown, the connecting portion may also be a groove provided at one end of the rotating shaft 8, and the output shaft of the rotating motor is inserted into the groove.

[0044] In this embodiment, the specific structure of the connecting portion varies according to the force applying device, and will not be described in detail here.

[0045] In a first embodiment, Figures 1 to 7 As shown, one side of the shell 4 is provided with an open cavity for accommodating part of the cylinder liner cover 9, and the inner walls on the front and rear sides of the open cavity constitute an axial stop portion 4-1 (i.e., a front axial stop portion and a rear axial stop portion) for cooperating with the cylinder liner cover 9 in the front and rear directions.

[0046] exist Figure 6In the first embodiment shown, the number of the opening portion 4-2 is one, that is, the number of the opening is one; Figure 8 In the third specific embodiment shown, the number of the parts 4 - 2 where the open cavities are located is two, that is, the number of the open cavities is two; of course, in other specific embodiments, the number of the open cavities can also be three or more.

[0047] exist Figures 1 to 8 In the first and third embodiments, since the housing 4 is located on the upper portion of the cylinder gland 9, the opening is located on the lower side of the housing 4; however, in other embodiments, referring to Figures 1 to 7 As shown, when the housing 4 is located on the left side of the cylinder liner cover 9, the opening cavity can also be located on the right side of the housing 4; of course, the housing 4 can also be located on other sides of the cylinder liner cover 9, and the opening cavity is located on the side of the housing 4 close to the cylinder liner cover 9.

[0048] In the first and third embodiments, Figures 1 to 8 As shown, each axial stop structure is an axial stop plate, the rear surface of the front axial stop plate constitutes the front axial stop portion, the front surface of the rear axial stop plate constitutes the rear axial stop portion, and the front axial stop plate and the rear axial stop plate are arranged opposite to each other in the front-to-back direction to form an open cavity for accommodating part of the cylinder liner cover 9.

[0049] In other embodiments, refer to Figures 1 to 8 As shown, the front axial stop plate and the rear axial stop plate can also be staggered along the front-back direction. In different specific embodiments, each axial stop plate can be integrally formed with the housing 4, or can be fixedly mounted on the housing 4 separately.

[0050] In other embodiments except the first embodiment and the third embodiment, refer to Figures 1 to 8 As shown, each axial stop structure can also be an axial stop rod, and the cylinder head cover 9 can contact multiple axial stop rods at the same time; of course, each axial stop structure can also be an axial stop block or other structure. Compared with the axial stop rod, the axial stop plate has a larger contact area with the cylinder liner cover 9.

[0051] like Figures 1-3 As shown, in order to simplify the structure, in the first specific embodiment, one end of the guide rod 3 has a hexagonal hole for matching with the bolt head of the corresponding bolt 2, which has a simple structure and is convenient for installing the guide rod 3 on the bolt 2.

[0052] In other embodiments except the first embodiment, refer to Figures 1 to 7As shown, one end of the guide rod 3 may also be provided with an elastic clamping claw for clamping the bolt head, and the guide rod 3 is fixedly mounted on the bolt 2 through the elastic clamping claw.

[0053] In the above technical solution, the shell 4, the rotating shaft 8 and the transmission gear 10 are supported by a longer guide rod 3. In order to prevent the guide rod 3 from breaking during use, the guide rod 3 must be made of a higher-strength material, which is costly. At the same time, once the guide rod 3 breaks, the shell 4 will fall and injure people, posing a safety hazard.

[0054] To reduce costs and prevent the housing 4 from falling and injuring people, in a first embodiment, the housing 4 is further provided with a sling connection structure for cooperating with a sling for lifting. The sling connection structure can be a conventional sling connection structure such as a lifting ring 5, a lifting hole, or a hoist head. During assembly and disassembly of the press sleeve, the housing 4 is lifted by the sling, which bears the weight of the housing 4, the rotating shaft 8, and the transmission gear 10. At this time, the guide rod 3 only serves as a guide, and the interaction force between the guide rod 3 and the housing 4 is zero or much less than the weight of the housing 4. This eliminates restrictions on the material of the guide rod 3, which helps reduce costs. Furthermore, even if the guide rod 3 breaks, the housing 4 remains suspended by the sling, preventing the housing 4 from falling and injuring people.

[0055] In the fourth embodiment, referring to Figures 1 to 7 As shown, the housing 4 may not be provided with a sling connection structure. In this case, the guide rod 3 is a solid rod and is made of a high-strength material such as steel to ensure that the guide rod 3 will not break during use. At the same time, before each removal of the cylinder liner gland 9, it is necessary to check whether there are any cracks on the guide rod 3.

[0056] In order to better guide the housing 4, in a first embodiment, the number of the guide rods 3 and the number of the guide holes are the same, and there are at least two guide rods 3. Figures 1 to 7 In the embodiment, there are two guide rods 3, but in other embodiments except the first embodiment, refer to Figures 1 to 7 As shown, there can be one or another number of guide rods 3. A greater number of guide rods 3 improves the guiding effect between the housing 4 and the guide rods 3, thereby improving the translational stability of the rotating shaft 8. However, a greater number of guide rods 3 also increases the complexity of the entire cylinder liner gland disassembly and assembly tooling.

[0057] In order to further optimize the guidance of the shell 4, in a fifth specific embodiment with at least two guide holes, the two guide holes are respectively located on both sides of the rotating shaft 8, so that the shell 4 is guided from both sides of the rotating shaft 8, thereby improving the guiding effect of the guide rod 3 on the shell 4 and the stability of the translation of the rotating shaft 8.

[0058] However, in the sixth embodiment with at least two guide holes, Figures 1 to 7As shown, the guide holes may also all be located on one side of the rotating shaft 8 .

[0059] like Figures 1 to 7 As shown, in the first embodiment, the gear ratio between the spur gear transmission structure and the transmission gear 10 is 4-12:1. When the rotating shaft 8 directly has a gear portion, the gear ratio between the spur gear transmission structure and the gear portion is 4-12:1. Specifically, it can be 4:1, 6:1, or 12:1. The module ratio between the spur gear transmission structure and the transmission gear 10 (or gear portion) is 2-3:1, specifically 2:1, 2.5:1, or 3:1. Of course, depending on actual needs, this module ratio can also be 1.5:1 or 4:1.

[0060] Of course, in other specific embodiments except the first specific embodiment, the gear ratio between the spur gear transmission structure and the transmission gear 10 (or gear portion) may also be 0.5:1, 1:1, 2:1 or 16:1.

[0061] Specific embodiment 2 of the tooling for disassembling and assembling the cylinder liner gland provided by the utility model:

[0062] The purpose of this embodiment is to provide a tool for disassembling and assembling a cylinder liner gland that does not include a cylinder liner gear.

[0063] In reference Figures 1 to 8 On the basis of Figure 9 As shown, the main difference between this embodiment and specific embodiment 1 is that: in specific embodiment 1, the tool for disassembling and assembling the cylinder liner cover is used to disassemble and assemble the cylinder liner cover 9 that does not include a straight-tooth transmission structure; in this embodiment, the tool for disassembling and assembling the cylinder liner cover is used to disassemble and assemble the cylinder liner cover 9 that includes a straight-tooth transmission structure. Therefore, the tool for disassembling and assembling the cylinder liner cover in this embodiment does not include the cylinder liner gear 7.

[0064] The cylinder liner gland 9 disassembled and assembled in this embodiment may be the cylinder liner gland 9 in the Chinese invention patent application with application publication number CN118110663A, and will not be described in detail here.

[0065] Specific embodiment 3 of the tooling for disassembling and assembling the cylinder liner gland provided by the utility model:

[0066] The purpose of this embodiment is to provide a tool for disassembling and assembling a cylinder liner gland with low friction between the tool and the cylinder liner gland.

[0067] In reference Figures 1 to 8 On the basis of Figure 10 As shown, the main differences between this embodiment and specific embodiments 1 and 2 are:

[0068] In specific embodiments 1 and 2, Figures 1 to 8In the embodiment, since the cylinder liner gland 9 rotates and moves in translation at the same time, and the housing 4 only moves in translation, the friction between each axial stop portion and the cylinder liner gland 9 is sliding friction, and the friction force is relatively large.

[0069] In this specific embodiment, Figure 10 As shown, to reduce friction between each axial stop and the cylinder liner gland, each axial stop is provided with a mounting groove. A ball 11 is positioned within the groove, and the groove is narrowed to prevent the ball from falling out (i.e., the groove width is smaller than the outer diameter of ball 11). A portion of ball 11 is positioned outside the groove. When cylinder liner gland 9 rotates, rolling friction occurs between ball 11 and the cylinder liner gland 9, effectively reducing friction between the axial stops and the cylinder liner gland 9.

[0070] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A tool for disassembling and assembling a cylinder liner gland, comprising a housing and a rotating shaft rotatably assembled in the housing, one end of the rotating shaft having a connecting portion for transmission connection with a force applying device, characterized in that: The rotating shaft has a gear portion for meshing with a straight-tooth transmission structure provided on the cylinder liner cover, or a transmission gear for meshing with a straight-tooth transmission structure provided on the cylinder liner cover is installed on the rotating shaft; the axial direction of the rotating shaft is defined as the front-to-back direction, and the tooling for disassembling and assembling the cylinder liner cover also includes a guide rod installed on a bolt installed on the cylinder body, and a guide hole extending along the front-to-back direction is provided on the shell body, and the guide hole is used for inserting the guide rod when disassembling and assembling the cylinder liner cover; the shell body is used to be provided with a front axial stop structure and a rear axial stop structure at one end close to the cylinder liner cover, and a space is formed between the front axial stop structure and the rear axial stop structure for inserting part of the cylinder liner cover when in use, the rear part of the front axial stop structure constitutes a front axial stop portion for cooperating with the cylinder liner cover stop when the cylinder liner cover moves forward, and the front part of the rear axial stop structure constitutes a rear axial stop portion for cooperating with the cylinder liner cover stop when the cylinder liner cover moves backward.

2. The tool for disassembling and assembling the cylinder liner gland according to claim 1, characterized in that: The front axial stop structure and the rear axial stop structure are arranged opposite to each other along the front-to-back direction.

3. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: The tooling for disassembling and assembling the cylinder liner gland further comprises a cylinder liner gear, which is used to be fixedly mounted on the cylinder liner gland that does not have a spur gear transmission structure, and the tooth portion of the cylinder liner gear constitutes the spur gear transmission structure.

4. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: The tooling for disassembling and assembling the cylinder liner gland also includes a cylinder liner gear, which is mounted on a cylinder liner gland that does not have a spur gear transmission structure, and the tooth portion of the cylinder liner gear constitutes the spur gear transmission structure; the cylinder liner gear includes a circumferential stop portion that cooperates with the cylinder liner gland along the circumferential stop.

5. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: The front axial stop structure is a front axial stop plate, the rear surface of which constitutes the front axial stop portion; the rear axial stop structure is a rear axial stop plate, the front surface of which constitutes the rear axial stop portion.

6. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: Each axial stop portion is provided with a ball to reduce the friction between each axial stop portion and the cylinder liner gland.

7. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: One end of the guide rod is provided with a hexagonal socket for matching with the bolt head of a corresponding bolt.

8. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: The shell is also provided with a sling connection structure for cooperating with a sling for lifting.

9. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: The connecting portion includes two clamped surfaces which are arranged in opposite directions and are used to be clamped by the force applying device.

10. The tool for disassembling and assembling the cylinder liner gland according to claim 1 or 2, characterized in that: The number of the guide rods and the number of the guide holes are the same, and there are at least two guide rods, wherein the two guide holes are respectively located on both sides of the rotating shaft.

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