Assembly tool of high-voltage switchgear

Abstract

The invention relates to the technical field of high-voltage switch equipment assembly, in particular to a high-voltage switch equipment assembly tool which comprises an assembly table, clamping tables are symmetrically distributed on the upper end face of the assembly table, the two clamping tables are movably connected with the assembly table, and the adjacent faces of the two clamping tables are rotationally connected with a rotating mechanism. A driving motor is fixed to the right end face of the assembling table, and a driving mechanism in transmission connection with the clamping table is arranged in the assembling table. The rotating mechanism comprises a clamp disc rotationally connected with the clamping table, and four clamping plates are annularly distributed on the surface of the clamp disc at equal intervals. The driving mechanism is designed to be matched with the clamping table, adjustment of the high-voltage switch cabinet framework of any length size can be achieved, clamping and fixing of the frameworks of different sizes and thicknesses are achieved in cooperation with the clamping base and the adjustable and movable clamping plate, a user is assisted in clamping, fixing and assembling work of the high-voltage switch cabinet framework, and the working efficiency is improved. And the assembling efficiency and the assembling precision are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage switchgear assembly, and in particular to an assembly tool for high-voltage switchgear. Background Art

[0002] High-voltage switchgear refers to electrical appliances with a rated voltage of 1kV or above, which are mainly used for opening and closing conductive circuits. It is a general term for high-voltage switches and their corresponding control, measurement, protection, and adjustment devices, as well as accessories, housings, supports, and other components and their electrical and mechanical connections. It is an important control device for connecting and disconnecting circuits, removing and isolating faults. During the assembly process of high-voltage switchgear, assembly tooling is required to assist the assembly process;

[0003] However, during the use of existing assembly tools, especially for high-voltage switchgear, it is not easy to quickly position high-voltage switchgear of different sizes, which affects the assembly efficiency. The high-voltage switchgear includes a frame and a sheet metal shell fixed on the frame. In the process of equipping the high-voltage switchgear, the fixation of the frame is particularly important. During the installation process, the holes between adjacent frames need to correspond, so the fixation of the frame needs to be ensured. After the assembly of the frame is completed, the surface sheet metal shell needs to be screwed. Manual operation is time-consuming and labor-intensive, and cannot meet the user's needs.

[0004] To this end, an assembly tool for high-voltage switchgear is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an assembly tool for high-voltage switchgear. The present application designs a driving mechanism in conjunction with a clamping platform to achieve adjustment of a high-voltage switch cabinet frame of any length, and cooperates with a clamping seat and an adjustable and movable clamping plate to achieve clamping and fixing of frames of different sizes and thicknesses, thereby assisting users in clamping, fixing and assembling the high-voltage switch cabinet frame, further improving assembly efficiency and assembly accuracy, and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an assembly tool for high-voltage switchgear, comprising an assembly table, wherein clamping tables are symmetrically distributed on the upper end surface of the assembly table, two clamping tables are movably connected to the assembly table, adjacent surfaces of the two clamping tables are rotatably connected with a rotating mechanism, a driving motor is fixed to the right end surface of the assembly table, and a driving mechanism is arranged inside the assembly table and is transmission-connected to the clamping tables;

[0007] The rotating mechanism comprises a clamping plate rotatably connected to the clamping table, the surface of the clamping plate is provided with four clamping plates distributed in an annular manner at equal distances, a clamping seat is arranged in the middle of the four clamping plates, the side surfaces of the clamping seat are designed to be parallel to the clamping plates, the clamping seat is fixed to the clamping plate, and the clamping plates are movably connected to the clamping plate;

[0008] The driving mechanism includes a bidirectional screw rotatably connected to the assembly table, and a sleeve is symmetrically sleeved on the surface of the bidirectional screw and the corresponding position of the clamping table, a pulley is fixedly connected between the two sleeves, the sleeve is fixedly connected to the pulley, a belt body is sleeved between the pulley and the rotating mechanism, and the end of the output shaft of the driving motor is fixed to the bidirectional screw.

[0009] Specifically, a slide groove is provided on the upper end surface of the assembly table at a position corresponding to the clamping table, and a slider is slidably connected inside the slide groove. The lower end of the slider is fixedly connected to the sleeve and does not contact the pulley. A semicircular groove is provided on the lower end surface of the slider, and the semicircular groove matches the outside of the sleeve.

[0010] Specifically, the clamping platform includes a left plate body and a right plate body, and the left plate body and the right plate body are connected by screws. An installation groove is opened between the left plate body and the right plate body. A rotating groove matching the clamping disk is opened through the surface of the right plate body. The clamping platform is made of magnetic metal material, and an electromagnet is embedded in the inner wall of the rotating groove. The clamping disk is located in the rotating groove and is rotatably connected to the rotating groove.

[0011] Specifically, the rotating mechanism includes a turntable rotatably connected inside the mounting groove, a rotating shaft passes through the middle of the turntable, an electromagnetic block is provided at the intersection of the turntable and the rotating shaft, and the electromagnetic block is fixed to the turntable, one end of the rotating shaft is rotatably connected to the inner wall of the mounting groove, and the other end is rotatably connected to the clamp disk through an electromagnet.

[0012] Specifically, a displacement groove is opened on the outside of the clamp disk at a position corresponding to the clamp plate, and a sliding block is slidably connected in the displacement groove. An arc-shaped driving groove is opened on the side of the turntable close to the sliding block. One end of the sliding block is located in the driving groove, and the other end is fixedly connected to the clamp plate.

[0013] Specifically, a through slot is formed inside the slider, the bottom of the through slot is connected to the inside of the assembly platform, and the top of the through slot is connected to the inside of the installation slot, and the belt body is arranged inside the through slot.

[0014] Specifically, an annular belt groove is provided on the outside of the turntable, the top of the belt body is sleeved in the belt groove, and the bottom of the belt body is sleeved on the outside of the belt pulley.

[0015] Specifically, the interior of the sleeve is fixedly connected with an electromagnetic sleeve 1, and the interior of the electromagnetic sleeve 1 is rotatably connected with an internal threaded sleeve made of a magnetic metal material, and the internal threaded sleeve is threadedly connected to the bidirectional screw.

[0016] Specifically, an electromagnetic sleeve 2 is fixed inside the pulley, and the inner wall of the electromagnetic sleeve 2 is designed with a threaded structure and is threadedly connected to the bidirectional screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present application can adjust the high-voltage switch cabinet frame of any length and size by designing a driving mechanism in conjunction with a clamping platform, and can clamp and fix frames of different sizes and thicknesses by cooperating with a clamping seat and an adjustable and movable clamping plate, thereby assisting users in clamping and fixing the high-voltage switch cabinet frame and further improving assembly efficiency and assembly accuracy;

[0019] 2. The present application can adjust the rotation angle of the skeleton by designing a rotating mechanism in conjunction with a driving mechanism to facilitate the installation of different skeleton connection nodes. The user does not need to frequently change positions. At the same time, after the subsequent skeleton splicing is completed, it can also facilitate the installation of sheet metal parts on the surface of the skeleton, thereby improving the use efficiency of the device;

[0020] 3. The clamping platform used in this application is detachable, which facilitates the user to install and maintain the internal structure and improves the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the overall structural view of the present invention;

[0023] Figure 2 It is a front view of the overall structure of the present invention;

[0024] Figure 3 The exploded view of the clamping platform of the present invention is Figure 1 ;

[0025] Figure 4 The exploded view of the clamping platform of the present invention is Figure 2 ;

[0026] Figure 5 It is a structural exploded diagram of the driving mechanism of the present invention;

[0027] Figure 6 For the present invention Figure 4 A front view of

[0028] Figure 7 It is a structural view of the bidirectional screw and the clamping platform of the present invention;

[0029] Figure 8 It is a structural view of the sleeve and the bidirectional screw of the present invention;

[0030] Fig. 9 It is a structural view of the pulley and the bidirectional screw of the present invention.

[0031] Description of reference numerals:

[0032] 1. Assembly table; 2. Clamping table; 21. Left plate; 22. Right plate; 23. Mounting slot; 24. Rotation slot; 25. Turntable; 26. Rotating shaft; 27. Clamping plate; 271. Sliding block; 272. Clamping plate; 273. Clamping seat; 274. Displacement slot; 28. Belt slot; 29. ​​Driving slot; 3. Rotating mechanism; 4. Slide slot; 41. Sliding block; 42. Through slot; 5. Driving motor; 6. Driving mechanism; 61. Belt body; 62. Bidirectional screw; 63. Pulley; 64. Sleeve; 66. Electromagnetic sleeve one; 67. Internal threaded sleeve; 68. Electromagnetic sleeve two. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 9 , the present invention provides a technical solution:

[0035] An assembly tool for a high-voltage switchgear comprises an assembly platform 1, wherein clamping platforms 2 are symmetrically distributed on the upper end surface of the assembly platform 1, two clamping platforms 2 are movably connected to the assembly platform 1, adjacent surfaces of the two clamping platforms 2 are rotatably connected with a rotating mechanism 3, a driving motor 5 is fixed to the right end surface of the assembly platform 1, and a driving mechanism 6 is provided inside the assembly platform 1 and is transmission-connected to the clamping platforms 2;

[0036] The rotating mechanism 3 includes a clamping plate 27 rotatably connected to the clamping table 2, and four clamping plates 272 are distributed in an annular manner at equal distances on the surface of the clamping plate 27, and a clamping seat 273 is arranged in the middle of the four clamping plates 272, and the side surface of the clamping seat 273 is designed to be parallel to the clamping plates 272, and the clamping seat 273 is fixed to the clamping plate 27, and the clamping plates 272 are movably connected to the clamping plate 27;

[0037] The driving mechanism 6 includes a bidirectional screw 62 rotatably connected to the assembly table 1, and a sleeve 64 is symmetrically sleeved on the surface of the bidirectional screw 62 and the corresponding position of the clamping table 2, a pulley 63 is fixedly connected between the two sleeves 64, the sleeve 64 is fixedly connected to the pulley 63, a belt body 61 is sleeved between the pulley 63 and the rotating mechanism 3, and the end of the output shaft of the driving motor 5 is fixed to the bidirectional screw 62.

[0038] Specifically, if Figure 1 and Figure 3 As shown, a slide groove 4 is provided on the upper end surface of the assembly table 1 at a position corresponding to the clamping table 2, and a slider 41 is slidably connected inside the slide groove 4, and the lower end of the slider 41 is fixedly connected to the sleeve 64 and does not contact the pulley 63, and a semicircular groove is provided on the lower end surface of the slider 41, and the semicircular groove is consistent with the outer part of the sleeve 64, and the clamping table 2 includes a left plate body 21 and a right plate body 22, and the left plate body 21 and the right plate body 22 are screwed, and a mounting groove 23 is provided between the left plate body 21 and the right plate body 22, and a rotating groove 24 matching the clamp disk 27 is provided on the surface of the right plate body 22, and the clamping table 2 is made of magnetic metal material, and an electromagnet is embedded in the inner wall of the rotating groove 24, and the clamp disk 27 is located in the rotating groove 24 and is rotatably connected to the rotating groove 24.

[0039] By adopting the above technical solution, the clamping platform 2 composed of the left plate body 21 and the right plate body 22 connected by screws is convenient for users to install and maintain the internal structure, and the service life of the device is improved. During operation, the clamping plate 27 moves through the clamping plate 272 to cooperate with the clamping seat 273 to clamp and fix skeletons of different sizes, and the clamping plate 27 is rotatably connected in the rotating groove 24 to facilitate the user to adjust the rotation angle of the skeleton after clamping and fixing, so as to facilitate the installation and fixation of the skeleton connection node, and after the adjustment is completed, when connecting the support rods of the skeleton between the two clamping platforms 2, it is convenient for the user to adjust the length of the support rods.

[0040] Specifically, if Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the rotating mechanism 3 includes a turntable 25 rotatably connected inside the mounting groove 23, a rotating shaft 26 passes through the middle of the turntable 25, an electromagnetic block is arranged at the intersection of the turntable 25 and the rotating shaft 26, and the electromagnetic block is fixed to the turntable 25, one end of the rotating shaft 26 is rotatably connected to the inner wall of the mounting groove 23, and the other end is rotatably connected to the clamping plate 27 through an electromagnet, a displacement groove 274 is provided on the outside of the clamping plate 27 at a position corresponding to the clamping plate 272, and a sliding block 271 is slidably connected in the displacement groove 274, a driving groove 29 of an arc structure is provided on the side of the turntable 25 close to the sliding block 271, one end of the sliding block 271 is located in the driving groove 29, and the other end is fixedly connected to the clamping plate 272, and the slider 41 is penetrated inside There is a through groove 42, the bottom of which is connected to the interior of the assembly table 1, and the top of the through groove 42 is connected to the interior of the mounting groove 23, a belt body 61 is arranged inside the through groove 42, an annular belt groove 28 is provided on the outside of the turntable 25, the top of the belt body 61 is sleeved in the belt groove 28, and the bottom of the belt body 61 is sleeved on the outside of the pulley 63, an electromagnetic sleeve 1 66 is fixedly connected to the inside of the sleeve 64, and an internal threaded sleeve 67 made of a magnetic metal material is rotatably connected to the inside of the electromagnetic sleeve 1 66, and the internal threaded sleeve 67 is threadedly connected to the bidirectional screw 62, an electromagnetic sleeve 2 68 is fixed to the inside of the pulley 63, and the inner wall of the electromagnetic sleeve 2 68 is designed with a threaded structure and is threadedly connected to the bidirectional screw 62.

[0041] By adopting the above technical solution, when working, the user first places the skeleton between the clamp seat 273 and the clamp plate 272, and connects the driving motor 5, the electromagnet, the electromagnetic block, the electromagnetic sleeve 1 66 and the electromagnetic sleeve 2 68 to the controller. At this time, the user controls the electromagnetic sleeve 2 68 between the pulley 63 and the two-way screw 62 to be magnetically fixed through the controller, and then controls the electromagnetic sleeve 1 66 to cut off the power. When the two-way screw 62 rotates, the internal threaded sleeve 67 rotates with the two-way screw 62, and thus cannot drive the sleeve 64 to move. Then the user controls the electromagnetic block between the turntable 25 and the rotating shaft 26 to be conductively fixed, and the electromagnet between the rotating groove 24 and the clamp disk 27 is conductive. Therefore, when the driving motor 5 drives the two-way screw 62 to rotate, the two-way screw 62 drives the pulley 63 to rotate through the electromagnetic sleeve 2 68 magnetic attraction, thereby driving the belt body 6 1 rotates, further driving the turntable 25 to rotate inside the installation groove 23, driving the rotating shaft 26 to rotate, at this time, the electromagnet at the connection between the end of the rotating shaft 26 and the clamping plate 27 is disconnected and the electromagnetic attraction disappears, so when the turntable 25 rotates, the sliding block 271 located in the driving groove 29 of the arc-shaped structure outside the turntable 25 is displaced, and at this time, the sliding block 271 is displaced inside the displacement groove 274, driving the clamping plate 272 to move toward the clamping seat 273, so that the clamping plate 272 cooperates with the clamping seat 273 to clamp and fix the skeleton. In the subsequent skeleton splicing process, the controller is also used to control the electromagnets at the rotating shaft 26 and the clamping plate 27 to conduct electricity, and the electromagnets between the rotating groove 24 and the clamping plate 27 to conduct electricity, so as to realize the rotation of the turntable 25, drive the rotating shaft 26 to rotate, drive the clamping plate 27 to rotate in the rotating groove 24, and realize the angle adjustment of the skeleton fixed by the clamping groove;

[0042] And when the skeleton in the clamp seat 273 on the two clamping platforms 2 is connected with the support parts, the distance between the two clamping platforms 2 can also be adjusted according to the length of the support parts. At this time, the electromagnetic sleeve 2 68 is powered off, and the electromagnetic sleeve 1 66 is conductive. The bidirectional screw 62 rotates, and the internal threaded sleeve 67 and the sleeve 64 cooperate to realize the displacement of the slider 41 in the slide groove 4, thereby driving the clamping platform 2 on the top of the slider 41 to move.

[0043] Working principle: When working, the user first places the skeleton between the clamp seat 273 and the clamp plate 272, and connects the driving motor 5, the electromagnet, the electromagnetic block, the electromagnetic sleeve 1 66 and the electromagnetic sleeve 2 68 to the controller. At this time, the user controls the electromagnetic sleeve 2 68 between the pulley 63 and the bidirectional screw 62 to be magnetically fixed through the controller, and then controls the electromagnetic sleeve 1 66 to cut off the power. When the bidirectional screw 62 rotates, the internal thread sleeve 67 rotates with the bidirectional screw 62, and thus cannot drive the sleeve 64 to move. Then the user controls the electromagnetic block between the turntable 25 and the rotating shaft 26 to be conductively fixed, and the electromagnet between the rotating groove 24 and the clamp disk 27 is conductive. Therefore, when the driving motor 5 drives the bidirectional screw 62 to rotate, the bidirectional screw 62 drives the pulley 63 to rotate through the electromagnetic sleeve 2 68 magnetic attraction, and then drives the belt body 61 to rotate. , further driving the turntable 25 to rotate inside the installation groove 23, driving the rotating shaft 26 to rotate, at this time, the electromagnet at the connection between the end of the rotating shaft 26 and the clamp disk 27 is disconnected and the electromagnetic attraction disappears, so when the turntable 25 rotates, the sliding block 271 located in the driving groove 29 of the arc-shaped structure outside the turntable 25 is displaced, and at this time the sliding block 271 is displaced inside the displacement groove 274, driving the clamping plate 272 to move in the direction of the clamping seat 273, so that the clamping plate 272 cooperates with the clamping seat 273 to clamp and fix the skeleton, and subsequently in the skeleton splicing process, the controller is also used to control the electromagnets at the rotating shaft 26 and the clamp disk 27 to conduct electricity, and the electromagnets between the rotating groove 24 and the clamp disk 27 to conduct electricity, so that the turntable 25 rotates, driving the rotating shaft 26 to rotate, and driving the clamp disk 27 to rotate in the rotating groove 24, so as to achieve the angle adjustment of the skeleton fixed by the clamping groove;

[0044] And when the skeleton in the clamp seat 273 on the two clamping platforms 2 is connected with the support parts, the distance between the two clamping platforms 2 can also be adjusted according to the length of the support parts. At this time, the electromagnetic sleeve 2 68 is powered off, and the electromagnetic sleeve 1 66 is conductive. The bidirectional screw 62 rotates, and the internal threaded sleeve 67 and the sleeve 64 cooperate to realize the displacement of the slider 41 in the slide groove 4, thereby driving the clamping platform 2 on the top of the slider 41 to move.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assembly tool for a high-voltage switchgear, comprising an assembly platform (1), characterized in that: The upper end surface of the assembly platform (1) is symmetrically provided with clamping platforms (2), two of the clamping platforms (2) are movably connected to the assembly platform (1), adjacent surfaces of the two clamping platforms (2) are rotatably connected with a rotating mechanism (3), a driving motor (5) is fixed to the right end surface of the assembly platform (1), and a driving mechanism (6) is provided inside the assembly platform (1) and is transmission-connected to the clamping platforms (2); The rotating mechanism (3) comprises a clamping plate (27) rotatably connected to the clamping platform (2), the surface of the clamping plate (27) is provided with four clamping plates (272) equidistantly distributed in a circular shape, a clamping seat (273) is arranged in the middle of the four clamping plates (272), the side surface of the clamping seat (273) is designed to be parallel to the clamping plates (272), the clamping seat (273) is fixed to the clamping plate (27), and the clamping plates (272) are movably connected to the clamping plate (27); The driving mechanism (6) comprises a bidirectional screw (62) rotatably connected to the assembly platform (1), and a sleeve (64) is symmetrically sleeved on the surface of the bidirectional screw (62) at a corresponding position of the clamping platform (2), a pulley (63) is fixedly connected between the two sleeves (64), the sleeve (64) is fixedly connected to the pulley (63), a belt body (61) is sleeved between the pulley (63) and the rotating mechanism (3), and the output shaft end of the driving motor (5) is fixed to the bidirectional screw (62).

2. The assembly tool for high-voltage switchgear according to claim 1, characterized in that: A slide groove (4) is provided at a position corresponding to the upper end surface of the assembly platform (1) and the clamping platform (2), and a slider (41) is slidably connected inside the slide groove (4), and the lower end of the slider (41) is fixedly connected to the sleeve (64) and does not contact the pulley (63), and a semicircular notch is provided on the lower end surface of the slider (41), and the semicircular notch is consistent with the outer portion of the sleeve (64).

3. The assembly tool for high-voltage switchgear according to claim 2, characterized in that: The clamping platform (2) comprises a left plate body (21) and a right plate body (22), and the left plate body (21) and the right plate body (22) are screwed together, a mounting groove (23) is provided between the left plate body (21) and the right plate body (22), a rotating groove (24) matching with a clamping plate (27) is provided through the surface of the right plate body (22), and the clamping platform (2) is made of a magnetic metal material, an electromagnet is embedded in the inner wall of the rotating groove (24), and the clamping plate (27) is located in the rotating groove (24) and is rotatably connected to the rotating groove (24).

4. The assembly tool for high-voltage switchgear according to claim 3, characterized in that: The rotating mechanism (3) comprises a turntable (25) rotatably connected inside the mounting groove (23), a rotating shaft (26) passing through the middle of the turntable (25), an electromagnetic block is arranged at the point where the turntable (25) and the rotating shaft (26) pass through, and the electromagnetic block is fixed to the turntable (25), one end of the rotating shaft (26) is rotatably connected to the inner wall of the mounting groove (23), and the other end is rotatably connected to the clamping plate (27) through an electromagnet.

5. The assembly tool for high-voltage switchgear according to claim 4, characterized in that: A displacement groove (274) is provided on the outside of the clamping plate (27) at a position corresponding to the clamping plate (272), and a sliding block (271) is slidably connected in the displacement groove (274); a driving groove (29) with an arc structure is provided on one side of the rotating disk (25) close to the sliding block (271); one end of the sliding block (271) is located in the driving groove (29), and the other end is fixedly connected to the clamping plate (272).

6. The assembly tool for high-voltage switchgear according to claim 5, characterized in that: A through slot (42) is provided inside the slider (41), the bottom of the through slot (42) is connected to the inside of the assembly platform (1), and the top of the through slot (42) is connected to the inside of the installation slot (23), and a belt body (61) is provided inside the through slot (42).

7. The assembly tool for high-voltage switchgear according to claim 6, characterized in that: An annular belt groove (28) is provided on the outside of the rotating disk (25), the top of the belt body (61) is sleeved in the belt groove (28), and the bottom of the belt body (61) is sleeved on the outside of the pulley (63).

8. The assembly tool for high-voltage switchgear according to claim 1, characterized in that: The interior of the sleeve (64) is fixedly connected to an electromagnetic sleeve (66), and the interior of the electromagnetic sleeve (66) is rotatably connected to an internal threaded sleeve (67) made of a magnetic metal material, and the internal threaded sleeve (67) is threadedly connected to the bidirectional screw (62).

9. The assembly tool for high-voltage switchgear according to claim 1, characterized in that: The interior of the belt pulley (63) is fixed with an electromagnetic sleeve (68), and the inner wall of the electromagnetic sleeve (68) is designed with a threaded structure and is threadedly connected to the bidirectional screw (62).

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