A sleeve installation tool and method

Abstract

The application relates to the technical field of prefabricated building tools, and particularly discloses a sleeve mounting tool which comprises a fixing base, an adjusting mechanism, two limiting seats, a transmission gear shaft, two push-pull plates and an automatic pressurizing mechanism; a motor is fixedly connected in the fixing base; the adjusting mechanism is rotationally connected to the fixing base; two limiting seats are fixedly arranged on the adjusting mechanism; the push-pull plates are slidingly matched with the limiting seats; the transmission gear shaft is rotationally connected to the fixing base; the transmission gear shaft drives the two push-pull plates to realize reciprocating movement and realize sleeve mounting; the automatic pressurizing mechanisms are rotationally connected to the push-pull plates and realize pressure change. The sleeve mounting tool adopts the technical means of the transmission gear shaft and the push-pull plates, effectively solves the technical problems in the prior art, continuously rotates the sleeve by using a machine, realizes sleeve mounting, can greatly improve the sleeve mounting efficiency, and simultaneously reduces the labor intensity.

Description

Technical Field

[0001] This application relates to the field of prefabricated building tools technology, and more specifically, to a sleeve installation tool and installation method. Background Technology

[0002] In the construction industry, the use of rebar couplers can significantly reduce material usage, and they are easy to operate and not limited by the type of rebar. They can be prefabricated, saving time and increasing processing efficiency. However, installation tools are required when installing rebar couplers.

[0003] The prior art publication CN114888754A provides a socket installation tool. This device applies force directly to the socket through the force-applying structure on the inner edge of the fixed and movable lips. Because the force-applying structure is movable, the tool can be rotated back and forth to make the force-applying structure contact the appropriate force-applying point for socket installation. The installation tool can be installed without removing it during construction, improving installation efficiency. The reaction component adopts the form of guide pins and springs. When the movable tongue contacts the socket, the spring compression can control the pressing depth of the guide pin on the fixed and movable lips, thereby automatically adapting to the installation of sockets of different specifications. It is suitable for the installation of butt sockets and can also be used for the installation of sockets in confined spaces, solving the problem of difficult installation of existing wrenches when the installation space is limited.

[0004] While the existing technical solutions described above can achieve the relevant beneficial effects through their structure, they still have the following drawbacks: During use, the device requires manual, repeated rotation to install the sleeve. This method is not only inefficient but also increases labor intensity and causes fatigue.

[0005] In view of this, we propose a sleeve installation tool. Summary of the Invention

[0006] 1. Technical problems to be solved

[0007] The purpose of this application is to provide a sleeve installation tool that solves the technical problems mentioned in the background art and achieves the technical effect of mechanized sleeve installation.

[0008] 2. Technical Solution

[0009] This application provides a sleeve installation tool, including: a fixed base, an adjustment mechanism, two limit seats, a transmission gear shaft, two push-pull plates and an automatic pressurization mechanism. A motor is fixedly connected inside the fixed base, and the adjustment mechanism is rotatably connected to the fixed base.

[0010] The adjustment mechanism is fixedly equipped with two limit seats; each limit seat is slidably fitted with a push-pull plate.

[0011] The transmission gear shaft is rotatably connected to the fixed base. The motor can drive the transmission gear shaft to rotate, and the transmission gear shaft drives two push-pull plates to reciprocate and move to install the sleeve.

[0012] Each push-pull plate is equipped with an automatic pressurization mechanism that rotates to change the pressure.

[0013] As an optional solution to the technical solution of this application, the adjustment mechanism includes a bidirectional lead screw and an adjustment block. The bidirectional lead screw is rotatably connected to the inner wall of the fixed seat. Two adjustment blocks are threadedly connected to both ends of the bidirectional lead screw, and each adjustment block is fixedly connected to a corresponding limit seat.

[0014] By adopting the above technical solution, rotating the bidirectional lead screw causes the two adjusting blocks to move, thereby adjusting the position of the sliding push-pull plate on the limit seat.

[0015] As an optional solution to the technical solution of this application, two bevel gears are symmetrically connected and fixedly arranged in the middle of the transmission gear shaft; an incomplete bevel gear is connected and fixedly arranged at the output end of the motor, and the incomplete bevel gear meshes with the bevel gear for transmission.

[0016] By adopting the above technical solution, the motor drives the connected incomplete bevel gear to rotate. At this time, the incomplete bevel gear will mesh with the two bevel gears respectively, thereby driving the transmission gear shaft connected to the two bevel gears to rotate in both directions.

[0017] As an optional solution to the technical solution of this application, a slider is fixedly connected to one end of the push-pull plate; a limit groove is provided on the limit seat, and the inner wall of the limit groove is slidably engaged with the outer wall of the slider.

[0018] As an optional solution to the technical solution of this application, a transmission rack is fixedly connected to the inner wall of one end of the push-pull plate, and the transmission rack meshes with the transmission gear shaft for transmission.

[0019] As an optional solution to the technical solution of this application, a pressure friction plate is slidably provided on the inner wall of the other end of the push-pull plate, and a plurality of springs are fixedly connected to one end of the pressure friction plate inside the push-pull plate, and the other end of the springs is fixedly connected to the inner wall of the push-pull plate.

[0020] As an optional solution to the technical solution of this application, the automatic pressurizing mechanism includes a protruding block, a worm gear, and a worm. The protruding block is rotatably connected to the inner wall of the push-pull plate, and the outer wall of the protruding block is slidably in contact with the inner side of the pressurizing friction plate. A worm gear is fixedly connected to one end of the protruding block, and a worm is meshed with the worm gear. The worm is rotatably connected to the inner wall of the push-pull plate.

[0021] By adopting the above technical solution, when the push-pull plate drives the sleeve to rotate, the protrusion is pressed against the pressure friction plate, so that the pressure friction plate can abut against the sleeve, thereby driving the sleeve to rotate when the push-pull plate moves.

[0022] As an optional solution to the technical solution of this application, an adjusting gear is fixedly connected to one end of the worm gear, and a sector gear is engaged with the adjusting gear. The sector gear is rotatably connected to the inner wall of the push-pull plate via a pin.

[0023] As an optional solution to the technical solution of this application, one end of the sector gear extends through the inner wall of the push-pull plate to the outside and is connected and fixedly provided with a contact rod;

[0024] By adopting the above technical solution, the contact rod rotates, thereby driving the connected sector gear to rotate, which in turn drives the meshing adjusting gear to rotate.

[0025] As an optional solution to the technical solution of this application, a U-shaped reversing rod is fixedly connected to one end of the limiting seat, and the U-shaped reversing rod is in movable contact with the contact rod.

[0026] A method for using a sleeve installation tool includes the following steps:

[0027] S1. When it is necessary to connect steel bars with sleeves during construction, the distance between the two push-pull plates can be adjusted according to the size of the sleeve. By rotating the double-acting screw, the double-acting screw drives the two adjusting blocks to move, thereby adjusting the distance between the two push-pull plates sliding on the limit seat.

[0028] S2. Then, the sleeve is clamped by two push-pull plates. The motor drives the connected incomplete bevel gear to rotate. At this time, the incomplete bevel gear will mesh with the two bevel gears respectively, thereby driving the transmission gear shaft connected to the two bevel gears to rotate in both directions. This drives the push-pull plate connected to the meshing transmission rack to move back and forth, so that the two push-pull plates move in opposite directions, thereby driving the sleeve to rotate in one direction.

[0029] S3. When the push-pull plate drives the sleeve to rotate, the protrusion is pressed against the pressure friction plate, so that the pressure friction plate can abut against the sleeve, thereby driving the sleeve to rotate when the push-pull plate moves.

[0030] S4. When the push-pull plate moves to a certain position to reset, the contact rod will contact one end of the U-shaped reversing rod, causing the contact rod to rotate. This will drive the connected sector gear to rotate, which in turn drives the meshing adjusting gear to rotate. The adjusting gear will then drive the connected worm gear to rotate, which in turn drives the meshing worm wheel to rotate. This will cause the worm wheel to rotate, preventing the worm wheel from contacting the pressure friction plate. At this point, the pressure friction plate will move inwards towards the push-pull plate under the action of the spring, preventing it from contacting the sleeve. Therefore, the sleeve will not rotate when the push-pull plate resets.

[0031] S5. Then, when the push-pull plate is reset to its position, the contact rod rotates in the opposite direction under the action of the U-shaped reversing rod. This drives the protrusion to press against the pressure friction plate, allowing the pressure friction plate to abut against the sleeve. Then, under the action of the push-pull plate, the sleeve is continuously rotated and installed.

[0032] 3. Beneficial effects

[0033] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0034] 1. This application effectively solves the technical problems in the prior art by adopting the technical means of transmission gear shaft and push-pull plate, thereby realizing the installation of the sleeve by continuously rotating the sleeve mechanically, which can greatly improve the installation efficiency of the sleeve and reduce the labor force.

[0035] 2. This application provides an automatic pressurizing mechanism on the push-pull plate. When the push-pull plate moves back and forth, the automatic pressurizing mechanism can apply pressure to the friction plate in one direction, thereby driving the sleeve to rotate in one direction to achieve installation. No manual adjustment is required, making it convenient to use.

[0036] 3. This application improves the practicality of the device by setting an adjustment mechanism on the fixed base, which makes the distance between the two push-pull plates adjustable, so that the device can be used to install sleeves of different diameters. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the sleeve installation tool disclosed in a preferred embodiment of this application;

[0038] Figure 2This is a partial cross-sectional view of the overall structure of the sleeve installation tool disclosed in a preferred embodiment of this application;

[0039] Figure 3 This is a partial cross-sectional schematic diagram of the fixing seat and adjustment mechanism structure of the sleeve installation tool disclosed in a preferred embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the limiting seat structure of the sleeve installation tool disclosed in a preferred embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the transmission gear shaft and other structures of a sleeve installation tool disclosed in a preferred embodiment of this application;

[0042] Figure 6 This is a partial cross-sectional schematic diagram of the push-pull plate and automatic pressurization mechanism of the sleeve installation tool disclosed in a preferred embodiment of this application;

[0043] The following are the labels in the diagram: 1. Fixed seat; 2. Adjusting mechanism; 3. Limiting seat; 4. Transmission gear shaft; 5. Push-pull plate; 6. Automatic pressurizing mechanism; 7. Motor; 201. Two-way lead screw; 202. Adjusting block; 401. Bevel gear; 402. Incomplete bevel gear; 501. Slider; 502. Transmission rack; 503. Pressurizing friction plate; 504. Spring; 301. Limiting groove; 302. U-shaped reversing rod; 601. Protrusion; 602. Worm gear; 603. Worm; 604. Adjusting gear; 605. Sector gear; 606. Contact rod. Detailed Implementation

[0044] The present application will be further described in detail below with reference to the accompanying drawings.

[0045] Reference Figure 1 and Figure 2 A sleeve installation tool includes a fixed base 1, an adjustment mechanism 2, a limit base 3, a transmission gear shaft 4, a push-pull plate 5, an automatic pressure mechanism 6, and a motor 7;

[0046] A motor 7 is fixedly connected inside the fixed base 1, and an adjustment mechanism 2 is rotatably connected to the fixed base 1.

[0047] Two limit seats 3 are fixedly installed on the adjusting mechanism 2;

[0048] Each of the limiting seats 3 is equipped with a sliding plate 5;

[0049] The transmission gear shaft 4 is rotatably connected to the fixed base 1. The motor 7 can drive the transmission gear shaft 4 to rotate. The transmission gear shaft 4 drives the two push-pull plates 5 to reciprocate and move to install the sleeve.

[0050] Each push-pull plate 5 is rotatably connected to an automatic pressurizing mechanism 6, which performs the function of pressure conversion. A handle is fixedly connected to the fixed base 1.

[0051] Reference Figure 3 The adjusting mechanism 2 includes a bidirectional lead screw 201 and adjusting blocks 202. The bidirectional lead screw 201 is rotatably connected to the inner wall of the fixed base 1. Adjusting blocks 202 are threadedly connected to both ends of the bidirectional lead screw 201, and each adjusting block 202 is fixedly connected to a corresponding limiting seat 3. The bidirectional lead screw 201 enables adjustment of the distance between the two push-pull plates 5.

[0052] Reference Figure 5 Two bevel gears 401 are symmetrically connected and fixed in the middle of the transmission gear shaft 4; an incomplete bevel gear 402 is fixedly connected to the output end of the motor 7, and the incomplete bevel gear 402 meshes with the bevel gear 401 for transmission. The incomplete bevel gear 402 drives the transmission gear shaft 4 to rotate in both directions.

[0053] Reference Figure 4 and Figure 6 A slider 501 is fixedly connected to one end of the push-pull plate 5; a limit groove 301 is provided on the limit seat 3, and the inner wall of the limit groove 301 is slidably engaged with the outer wall of the slider 501. The limit groove 301 makes the movement of the push-pull plate 5 more stable.

[0054] A transmission rack 502 is fixedly connected to the inner wall of one end of the push-pull plate 5. A transmission rack 502 is connected to the lower side of one push-pull plate 5 and a transmission rack 502 is connected to the upper side of the other push-pull plate 5. The transmission racks 502 are all meshed with the transmission gear shaft 4 for transmission.

[0055] Reference Figure 4 and Figure 6 A pressure friction plate 503 is slidably fitted onto the inner wall of the other end of the push-pull plate 5. Multiple springs 504 are fixedly connected to one end of the pressure friction plate 503 within the push-pull plate 5, and the other ends of the springs 504 are fixedly connected to the inner wall of the push-pull plate 5. The springs 504 enable the pressure friction plate 503 to automatically reset.

[0056] The automatic pressurizing mechanism 6 includes a protrusion 601, a worm gear 602, and a worm 603. The protrusion 601 is rotatably connected to the inner wall of the push-pull plate 5, and the outer wall of the protrusion 601 is in sliding contact with the inner side of the pressure friction plate 503. The worm gear 602 is fixedly connected to one end of the protrusion 601, and the worm gear 602 meshes with the worm 603. The worm 603 is rotatably connected to the inner wall of the push-pull plate 5. The protrusion 601 pushes the pressure friction plate 503.

[0057] One end of the worm gear 603 is fixedly connected to an adjusting gear 604, which meshes with a sector gear 605. The sector gear 605 is rotatably connected to the inner wall of the push-pull plate 5 via a pin.

[0058] One end of the sector gear 605 extends through the inner wall of the push-pull plate 5 to the outside and is connected and fixedly mounted with a contact rod 606; one end of the limiting seat 3 is connected and fixedly mounted with a U-shaped reversing rod 302, which is in movable contact with the contact rod 606. The U-shaped reversing rod 302 serves to adjust the protrusion 601.

[0059] Reference Figures 1-6 A method for using a sleeve installation tool includes the following steps:

[0060] S1. When it is necessary to connect steel bars with sleeves during construction, the distance between the two push-pull plates 5 can be adjusted according to the size of the sleeve. By rotating the double-acting screw 201, the double-acting screw 201 drives the two adjusting blocks 202 to move, thereby adjusting the distance between the push-pull plates 5 sliding on the two adjusting limit seats 3.

[0061] S2. Then, the sleeve is clamped by two push-pull plates 5. Then, the motor 7 drives the connected incomplete bevel gear 402 to rotate. At this time, the incomplete bevel gear 402 will mesh with the two bevel gears 401 respectively, thereby driving the transmission gear shaft 4 connected to the two bevel gears 401 to rotate back and forth. This drives the push-pull plate 5 connected to the meshing transmission rack 502 to move back and forth, so that the two push-pull plates 5 move in opposite directions, thereby driving the sleeve to rotate in one direction.

[0062] S3. When the push-pull plate 5 drives the sleeve to rotate, the protrusion 601 is pressed against the pressure friction plate 503, so that the pressure friction plate 503 can abut against the sleeve, thereby driving the sleeve to rotate when the push-pull plate 5 moves.

[0063] S4. When the push-pull plate 5 moves to a certain position to reset, the contact rod 606 will contact one end of the U-shaped reversing rod 302, causing the contact rod 606 to rotate, thereby driving the connected sector gear 605 to rotate, which in turn drives the meshing adjusting gear 604 to rotate. The adjusting gear 604 will then drive the connected worm gear 603 to rotate, which in turn drives the meshing worm wheel 602 to rotate, thereby driving the protrusion 601 connected to the worm wheel 602 to rotate, so that the protrusion 601 does not contact the pressure friction plate 503. At this time, the pressure friction plate 503 will move inward to the push-pull plate 5 under the action of the spring 504, so that the pressure friction plate 503 does not contact the sleeve. At this time, the sleeve will not rotate when the push-pull plate 5 resets.

[0064] S5. Then, when the push-pull plate 5 is reset to its position, the contact rod 606 rotates in the opposite direction under the action of the U-shaped reversing rod 302. This drives the protrusion 601 to abut against the pressure friction plate 503, so that the pressure friction plate 503 can abut against the sleeve. Then, under the action of the push-pull plate 5, the sleeve is continuously rotated and installed.

[0065] The implementation principle of a sleeve installation tool in this application embodiment is as follows: When it is necessary to connect steel bars with sleeves during construction, the distance between the two push-pull plates 5 can be adjusted according to the size of the sleeve. By rotating the bidirectional screw 201, the bidirectional screw 201 drives the two adjusting blocks 202 to move, thereby adjusting the position of the distance between the two push-pull plates 5 sliding on the limit seat 3.

[0066] Then, the sleeve is clamped by two push-pull plates 5, and the motor 7 drives the connected incomplete bevel gear 402 to rotate. At this time, the incomplete bevel gear 402 will mesh with the two bevel gears 401 respectively, thereby driving the transmission gear shaft 4 connected to the two bevel gears 401 to rotate in both directions. This drives the push-pull plate 5 connected to the meshing transmission rack 502 to move back and forth, so that the two push-pull plates 5 move in opposite directions, thereby driving the sleeve to rotate in one direction. When the push-pull plate 5 drives the sleeve to rotate, the protrusion 601 is abutting against the pressure friction plate 503, so that the pressure friction plate 503 can abut against the sleeve, thereby driving the sleeve to rotate when the push-pull plate 5 moves.

[0067] Then, when the push-pull plate 5 moves to a certain position to reset, the contact rod 606 will contact one end of the U-shaped reversing rod 302, causing the contact rod 606 to rotate, thereby driving the connected sector gear 605 to rotate, which in turn drives the meshing adjusting gear 604 to rotate. The adjusting gear 604 will then drive the connected worm 603 to rotate, and the worm 603 will then drive the meshing worm wheel 602 to rotate, thereby driving the protrusion 601 connected to the worm wheel 602 to rotate, so that the protrusion 601 does not contact the pressure friction plate 503. At this time, the pressure friction plate 503 will move inward to the push-pull plate 5 under the action of the spring 504, so that the pressure friction plate 503 does not contact the sleeve. At this time, when the push-pull plate 5 resets, it will not drive the sleeve to rotate.

[0068] Then, when the push-pull plate 5 is reset to its position, the contact rod 606 rotates in the opposite direction under the action of the U-shaped reversing rod 302. This drives the protrusion 601 to abut against the pressure friction plate 503, allowing the pressure friction plate 503 to abut against the sleeve. Then, under the action of the push-pull plate 5, the sleeve is continuously rotated and installed.

[0069] This invention utilizes a transmission gear shaft and push-pull plates to achieve continuous mechanical rotation of the sleeve, thereby realizing the installation of the sleeve. This significantly improves installation efficiency and reduces labor costs. An automatic pressure mechanism on the push-pull plates applies unidirectional force to the friction plates during reciprocating movement, driving the sleeve to rotate unidirectionally for installation without manual adjustment, making it convenient to use. An adjustment mechanism on the fixed base allows for adjustable spacing between the two push-pull plates, making the device suitable for installing sleeves of different diameters, thus enhancing its practicality.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sleeve installation tool, comprising: a fixed base (1), an adjusting mechanism (2), two limiting seats (3), a transmission gear shaft (4), two push-pull plates (5), and an automatic pressurizing mechanism (6), characterized in that: A motor (7) is fixedly connected inside the fixed base (1), and an adjustment mechanism (2) is rotatably connected to the fixed base (1). The adjustment mechanism (2) includes a two-way lead screw (201) and an adjustment block (202). The two-way lead screw (201) is rotatably connected to the inner wall of the fixed base (1). Two adjustment blocks (202) are threadedly connected to both ends of the two-way lead screw (201), and each adjustment block (202) is fixedly connected to a corresponding limiting seat (3). Two limit seats (3) are fixedly installed on the adjustment mechanism (2); Each of the limiting seats (3) is equipped with a sliding plate (5); A transmission rack (502) is fixedly provided on the inner wall of one end of the push-pull plate (5), and the transmission rack (502) is meshed with the transmission gear shaft (4) for transmission. A pressure friction plate (503) is slidably fitted on the inner wall of the other end of the push-pull plate (5). A plurality of springs (504) are fixedly installed on one end of the pressure friction plate (503) inside the push-pull plate (5). The other end of the springs (504) is connected and fixedly installed to the inner wall of the push-pull plate (5). The transmission gear shaft (4) is rotatably connected to the fixed base (1). The motor (7) can drive the transmission gear shaft (4) to rotate. The transmission gear shaft (4) drives the two push-pull plates (5) to reciprocate and perform the function of installing the sleeve. An automatic pressurizing mechanism (6) is rotatably connected to each of the push-pull plates (5), and the automatic pressurizing mechanism (6) realizes the function of pressure conversion; The automatic pressurization mechanism (6) includes a protrusion (601), a worm gear (602), and a worm (603). The protrusion (601) is rotatably connected to the inner wall of the push-pull plate (5). The outer wall of the protrusion (601) is slidably in contact with the inner side of the pressurization friction plate (503). A worm gear (602) is fixedly provided at one end of the protrusion (601). The worm gear (602) is meshed with the worm (603). The worm (603) is rotatably connected to the inner wall of the push-pull plate (5). One end of the worm (603) is fixedly connected to an adjusting gear (604), and the adjusting gear (604) meshes with a sector gear (605). The sector gear (605) is rotatably connected to the inner wall of the push-pull plate (5) via a pin. One end of the sector gear (605) extends through the inner wall of the push-pull plate (5) to the outside and is connected and fixedly provided with a contact rod (606). The limiting seat (3) is fixedly connected to a U-shaped reversing rod (302) at one end, and the U-shaped reversing rod (302) is in contact with the contact rod (606).

2. The sleeve installation tool according to claim 1, characterized in that: The transmission gear shaft (4) has two bevel gears (401) fixedly installed in the middle in a symmetrical structure. The output end of the motor (7) is fixedly provided with an incomplete bevel gear (402), and both bevel gears (401) are meshed with the incomplete bevel gear (402) for transmission.

3. The sleeve installation tool according to claim 1, characterized in that: A slider (501) is fixedly connected to one end of the push-pull plate (5); The limiting seat (3) has a limiting groove (301) and the inner wall of the limiting groove (301) is slidably fitted with the outer wall of the slider (501).

4. The method of using a sleeve installation tool according to claim 3, characterized in that... Includes the following steps: S1. When it is necessary to connect the steel bars with sleeves during construction, the distance between the two push-pull plates (5) is adjusted according to the size of the sleeve. By rotating the double-acting screw (201), the double-acting screw (201) drives the two adjusting blocks (202) to move, thereby adjusting the distance between the two push-pull plates (5) sliding on the limit seat (3). S2. Use two push-pull plates (5) to clamp the sleeve, start the motor (7) to drive the incomplete bevel gear (402) to rotate. At this time, the incomplete bevel gear (402) intermittently meshes with the two bevel gears (401) to drive the transmission gear shaft (4) connected to the two bevel gears (401) to rotate back and forth, thereby driving the push-pull plate (5) connected to the meshing transmission rack (502) to move back and forth, so that the two push-pull plates (5) move in opposite directions, thereby driving the sleeve to rotate in one direction. S3. When the push-pull plate (5) drives the sleeve to rotate, the protrusion (601) is against the pressure friction plate (503), so that the pressure friction plate (503) can abut against the sleeve, thereby driving the sleeve to rotate when the push-pull plate (5) moves. S4. When the push-pull plate (5) moves to a certain position to reset, the contact rod (606) will contact one end of the U-shaped reversing rod (302), thereby causing the contact rod (606) to rotate, thereby driving the connected sector gear (605) to rotate, thereby driving the meshing adjusting gear (604) to rotate, and then the adjusting gear (604) will drive the connected worm (603) to rotate, and then the worm (603) will drive the meshing worm wheel (602) to rotate, thereby driving the worm wheel (602) connected to the protrusion (601) to rotate, so that the protrusion (601) does not contact the pressure friction plate (503). At this time, the pressure friction plate (503) will move to the inside of the push-pull plate (5) under the action of the spring (504), so that the pressure friction plate (503) does not contact the sleeve. At this time, the sleeve will not be driven to rotate when the push-pull plate (5) is reset. S5. When the push-pull plate (5) is reset to the position, the contact rod (606) rotates in the opposite direction under the action of the U-shaped reversing rod (302), thereby driving the protrusion (601) to abut against the pressure friction plate (503) through transmission, so that the pressure friction plate (503) can abut against the sleeve, and then the sleeve is continuously rotated and installed under the action of the push-pull plate (5).

Images