Motor convenient to maintain

Abstract

The invention provides a motor convenient to maintain, and relates to the field of motors. A motor base is arranged at the bottom of the motor body, four T-shaped sliding strips are evenly arranged on the bottom end face of the motor base, and the bottom of the motor base is slidably connected with a mounting base through the four T-shaped sliding strips. The left side and the right side of the mounting base are each provided with two mounting plates. Through cooperation of an annular one-way limiting plate, a one-way limiting tooth block, an annular limiting block, an annular sliding plate, a strip-shaped sliding groove and a one-way limiting plate, the situation that a fixing bolt is loosened can be effectively avoided, and the situation that the stability and the operation efficiency of a motor body are affected by intensified vibration is avoided; the problems that in the actual use process of an existing motor, due to the fact that vibration is generated, a fixing bolt is prone to being affected by vibration force to be loosened, after the fixing bolt is loosened, vibration is intensified, and the stability and the operation efficiency of the motor are affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor that is convenient for maintenance. Background Art

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. The main function of the motor is to generate a driving torque and serve as a power source for electrical appliances or various machines. Motors are widely used in various fields, such as industry, transportation, household appliances, etc., and are an indispensable part of modern life.

[0003] In the actual use process of existing motors, the motor base is generally fixedly connected to a supporting object through fixing bolts. During the operation of the motor, due to vibration, the fixing bolts are prone to loosen under the influence of the vibration force. When the fixing bolts become loose, the vibration will intensify, affecting the stability and operating efficiency of the motor. If the bolts remain loose for a long time, it will also cause motor damage and safety accidents. In addition, when disassembling and repairing existing motors, since the motor base is fixedly connected to the supporting object through multiple bolts, when disassembling and repairing the motor, tools are needed to first loosen and remove these bolts before the motor can be removed from the supporting object, thus reducing the convenience of disassembling and repairing the motor. Summary of the Invention

[0004] An embodiment of the present disclosure relates to a motor that is convenient for maintenance. Through the cooperation of an annular one-way limiting plate, one-way limiting teeth, an annular limiting block, an annular sliding plate, a strip-shaped chute, and a one-way limiting plate, when the fixing bolt is tightened clockwise, the lower end of the one-way limiting plate is in close contact with the upper end surface of the annular one-way limiting plate, and the one-way limiting plate is located between two adjacent one-way limiting teeth, effectively avoiding the loosening of the fixing bolt, avoiding the situation where the vibration intensifies and affects the stability and operating efficiency of the motor body, and thus avoiding the motor body damage phenomenon and safety accidents caused by the intensified vibration.

[0005] In the first aspect of the present disclosure, a motor that is convenient for maintenance is provided, specifically including: a motor body; a motor base is provided at the bottom of the motor body, and four T-shaped sliding strips are evenly arranged on the bottom end surface of the motor base. The bottom of the motor base is slidably connected to a mounting seat through the four T-shaped sliding strips; two mounting plates are provided on both the left and right sides of the mounting seat, and a mounting hole is opened on each mounting plate, and a fixing bolt is movably inserted into each mounting hole; a limiting plate is fixedly connected to the front end surface of the mounting seat, and two one-way locking mechanisms are symmetrically mounted on the front end surface of the limiting plate in the left and right directions; a wind cover is installed at the rear end of the motor body, and a limiting mechanism is provided on each of the left and right sides of the wind cover.

[0006] In at least some embodiments, an annular one-way limiting plate is fixedly installed on the upper end surface of each of the mounting plates, and one-way limiting teeth are arranged in an annular array on the upper end surface of each annular one-way limiting plate, and chamfers are provided at the edges on one side of the upper end surface of each one-way limiting tooth.

[0007] In at least some embodiments, two plug-in plates are fixedly connected to the front end surface of the motor base, and a rectangular plug-in through hole is formed in the right end surface of each plug-in plate, and the two plug-in plates can pass through the limiting plate.

[0008] In at least some embodiments, four T-shaped sliding grooves are evenly formed on the upper end surface of the mounting seat, and the four T-shaped sliding grooves on the mounting seat are used for sliding connection with the four T-shaped sliding strips on the bottom end surface of the motor base.

[0009] In at least some embodiments, four sliding rails are arranged in an annular array on the rear side of the outer peripheral surface of the motor body, and a T-shaped sliding groove is formed in each sliding rail, and a limiting jack is formed in the T-shaped sliding groove formed in each of the left and right sliding rails; four T-shaped sliding blocks are arranged in an annular array on the inner peripheral surface of the wind hood, and the four T-shaped sliding blocks are used for sliding connection with the T-shaped sliding grooves formed in the four sliding rails.

[0010] In at least some embodiments, an annular limiting block is fixedly connected to the outside of the fixing bolt, and two strip-shaped sliding grooves are formed in the outer peripheral surface of the annular limiting block; the tightening direction of the fixing bolt is clockwise.

[0011] In at least some embodiments, an annular sliding plate is slidably connected to the outside of the fixing bolt, and the annular sliding plate is located above the annular limiting block; two one-way limiting plates are fixedly connected to the bottom end surface of the annular sliding plate in an annular array, and the two one-way limiting plates can be slidably connected with the two strip-shaped sliding grooves; chamfers are provided at the edges on one side of the lower end surface of each one-way limiting plate; an annular limiting plate is fixedly connected to the outside of the fixing bolt at the bottom of the hexagonal rotating block, and a spring is sleeved between the annular limiting plate and the annular sliding plate on the outside of the fixing bolt; when the one-way limiting plate is in a one-way limiting state, the lower end of the one-way limiting plate is in close contact with the upper end surface of the annular one-way limiting plate, and the one-way limiting plate is located between two adjacent one-way limiting teeth.

[0012] In at least some embodiments, the one-way locking mechanism includes a rectangular sliding shell, a rectangular sliding block, a trapezoidal plug-in block and a pulling block, the rectangular sliding shell is fixedly installed on the front end surface of the limiting plate, and the rectangular sliding block is slidably connected inside the rectangular sliding shell; a trapezoidal plug-in block penetrating through the head of the rectangular sliding shell is arranged on the head end surface of the rectangular sliding block, and a spring is arranged at the tail end of the rectangular sliding block inside the rectangular sliding shell; a pulling block is fixedly connected to the front end surface of the rectangular sliding block, and a handle is arranged on the pulling block; when the two one-way locking mechanisms are in a locking and limiting state, the two trapezoidal plug-in blocks are respectively inserted into the two rectangular plug-in through holes.

[0013] In at least some embodiments, the limiting mechanism includes a limiting housing, a rectangular slider, a rectangular sliding plate, a pulling handle, a limiting insertion rod, an L-shaped limiting block, a cushion block, a hexagonal sliding column and a spring guide rod. The limiting housing is fixedly connected to the front side of the outer periphery of the wind cover, and a rectangular slider is slidably connected inside the limiting housing. The head end face of the rectangular slider is fixedly connected with a limiting insertion rod penetrating through the head of the limiting housing, and the tail end face of the rectangular slider is provided with a spring guide rod penetrating through the tail of the limiting housing. A spring is sleeved outside the spring guide rod and inside the limiting housing. The upper end face of the rectangular slider is fixedly connected with a cushion block, and the upper end face of the cushion block is fixedly connected with a hexagonal sliding column. A circular limiting plate is arranged at the upper end of the hexagonal sliding column, and a rectangular sliding plate is slidably connected to the outside of the hexagonal sliding column. A pulling handle is fixedly connected to the rectangular sliding plate. A spring is sleeved between the rectangular sliding plate and the circular limiting plate on the outside of the hexagonal sliding column. The upper end face of the limiting housing is fixedly connected with an L-shaped limiting block. When the two limiting mechanisms are in the limiting state, the two limiting insertion rods are respectively inserted into the two limiting insertion holes.

[0014] The present invention provides a motor that is convenient for maintenance, and has the following beneficial effects: 1. Through the cooperation of the annular one-way limiting plate, the one-way limiting tooth block, the annular limiting block, the annular sliding plate, the strip-shaped sliding groove and the one-way limiting plate, when the fixing bolt is tightened clockwise, the lower end of the one-way limiting plate is in close contact with the upper end face of the annular one-way limiting plate, and the one-way limiting plate is located between two adjacent one-way limiting tooth blocks, thereby effectively preventing the fixing bolt from loosening, avoiding the situation that the vibration intensifies and affects the stability and operation efficiency of the motor main body, and thus avoiding the damage phenomenon and safety accident of the motor main body caused by the intensification of vibration.

[0015] 2. Through the cooperation of the motor base, the mounting seat, the insertion plate and the one-way locking mechanism, when the motor main body needs to be disassembled and maintained, only by manually pulling the handles on the two pulling blocks in the opposite direction at the same time, the two rectangular sliding blocks and the two trapezoidal insertion blocks can be moved in the opposite direction at the same time, so that the two trapezoidal insertion blocks are respectively pulled out from the two rectangular insertion through holes, and then the motor main body can be pushed backward for disassembly. Since the bolts can be removed from the supporting object without using tools, the convenience of disassembling and maintaining the motor main body is improved.

[0016] 3. Through the cooperation of the slide rail, the limiting insertion hole and the limiting mechanism, the two limiting insertion rods can be pulled out from the two limiting insertion holes, so that the wind cover loses the limiting effect at the rear end of the motor main body, and finally the wind cover can be removed from the rear end of the motor main body. Moreover, no tools are needed during the disassembly process, so it is more rapid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below.

[0018] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] In the accompanying drawings: Figure 1 A structural schematic diagram showing the overall structure of the present application is shown; Figure 2 A structural schematic diagram showing the bottom view of the present application is shown; Figure 3 A structural schematic diagram showing the present application in a disassembled state is shown; Figure 4 A structural schematic diagram showing the motor main body of the present application is shown; Figure 5 A structural schematic diagram showing the disassembled state of the annular one-way limiting plate and the fixing bolt of the present application is shown; Figure 6 A structural schematic diagram showing the disassembled state of the fixing bolt and the annular sliding plate of the present application is shown; Figure 7 A structural schematic diagram showing the Figure 1 partial enlarged view at position A in the present application is shown; Figure 8 A structural schematic diagram showing the annular sliding plate and the one-way limiting plate of the present application in a limiting state at the top of the annular limiting block is shown; Figure 9 A structural schematic diagram showing the limiting plate and the one-way locking mechanism of the present application is shown; Figure 10 A structural schematic diagram showing the axonometric view of the limiting mechanism of the present application is shown; Figure 11 A structural schematic diagram showing the disassembled state of the limiting mechanism of the present application is shown.

[0020] List of reference numerals 1. Motor main body; 101. Motor base; 102. Mounting seat; 103. Mounting plate; 104. Annular one-way limiting plate; 105. One-way limiting tooth block; 106. Limiting plate; 107. Plug-in plate; 108. Rectangular plug-in through hole; 109. Slide rail; 1010. Wind hood; 1011. T-shaped sliding block; 1012. Limiting jack; 2. Fixing bolt; 201. Annular limiting block; 202. Annular sliding plate; 203. Strip-shaped sliding groove; 204. One-way limiting plate; 205. Annular limiting plate; 3. One-way locking mechanism; 301. Rectangular sliding shell; 302. Rectangular sliding block; 303. Trapezoidal plug-in block; 304. Pulling block; 4. Limit mechanism; 401. Limit housing; 402. Rectangular slider; 403. Rectangular sliding plate; 404. Pulling handle; 405. Limit insertion rod; 406. L-shaped limit block; 407. Pad; 408. Hexagonal sliding column; 409. Spring guide rod. Detailed implementation mode

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0022] Embodiment 1: Please refer to Figures 1 to 11 : The present invention provides a motor that is convenient for maintenance, including: a motor main body 1; a motor base 101 is provided at the bottom of the motor main body 1, and four T-shaped sliding strips are evenly arranged on the bottom end surface of the motor base 101. The bottom of the motor base 101 is slidably connected to a mounting seat 102 through the four T-shaped sliding strips; two mounting plates 103 are provided on both the left and right sides of the mounting seat 102, and each mounting plate 103 is provided with a mounting hole, and a fixing bolt 2 is movably inserted into each mounting hole; a limiting plate 106 is fixedly connected to the front end surface of the mounting seat 102, and two one-way locking mechanisms 3 are symmetrically mounted on the front end surface of the limiting plate 106 in the left-right direction; a wind cover 1010 is installed at the rear end of the motor main body 1, and a limiting mechanism 4 is provided on each of the left and right sides of the wind cover 1010 for limiting the wind cover 1010.

[0023] An annular one-way limiting plate 104 is fixedly installed on the upper end surface of each mounting plate 103, and one-way limiting teeth 105 are arranged in an annular array on the upper end surface of each annular one-way limiting plate 104, and one side edge of the upper end surface of each one-way limiting tooth 105 is provided with a chamfer for cooperating with the rounded corner on one side of the lower end surface of the one-way limiting plate 204.

[0024] Two plugging plates 107 are fixedly connected to the front end surface of the motor base 101, and a rectangular plugging through hole 108 is opened on the right end surface of each plugging plate 107. The two plugging plates 107 can pass through the limiting plate 106.

[0025] Four T-shaped sliding grooves are evenly opened on the upper end surface of the mounting seat 102, and the four T-shaped sliding grooves on the mounting seat 102 are used for sliding connection with the four T-shaped sliding strips on the bottom end surface of the motor base 101. After the motor base 101 and the mounting seat 102 are slidably connected, a limiting effect in the up-down direction will be obtained between the mounting seat 102 and the mounting seat 102.

[0026] Four slide rails 109 are arranged in an annular array on the rear side of the outer peripheral surface of the motor body 1, and a T-shaped chute is provided on each slide rail 109. Moreover, a limit jack 1012 is provided inside the T-shaped chutes provided on the left and right slide rails 109; Four T-shaped sliding blocks 1011 are arranged in an annular array on the inner peripheral surface of the wind cover 1010, and the four T-shaped sliding blocks 1011 are used for sliding connection with the T-shaped chutes provided on the four slide rails 109.

[0027] An annular limit block 201 is fixedly connected to the outside of the fixing bolt 2, and two strip-shaped chutes 203 are provided on the outer peripheral surface of the annular limit block 201; The tightening direction of the fixing bolt 2 is clockwise.

[0028] An annular sliding plate 202 is slidably connected to the outside of the fixing bolt 2, and the annular sliding plate 202 is located above the annular limit block 201; Two one-way limit plates 204 are fixedly connected to the bottom end surface of the annular sliding plate 202 in an annular array, and the two one-way limit plates 204 can be slidably connected with the two strip-shaped chutes 203; One side edge of the lower end surface of each one-way limit plate 204 is provided with a rounded corner; An annular limit plate 205 is fixedly connected to the outside of the fixing bolt 2 at the bottom of the hexagonal rotating block, and a spring is sleeved between the annular limit plate 205 and the annular sliding plate 202 on the outside of the fixing bolt 2; When the one-way limit plate 204 is in the one-way limit state, the lower end of the one-way limit plate 204 is in close contact with the upper end surface of the annular one-way limit plate 104, and the one-way limit plate 204 is located between two adjacent one-way limit teeth 105, thus effectively preventing the fixing bolt 2 from loosening and avoiding the situation that the vibration intensifies and affects the stability and operation efficiency of the motor body 1; By pulling the annular sliding plate 202 upward, and then rotating the annular sliding plate 202 by 45 to 90 degrees, the annular sliding plate 202 and the one-way limit plate 204 can be stuck above the annular limit block 201. At this time, the fixing bolt 2 can be easily rotated counterclockwise, which is convenient for the disassembly work of the fixing bolt 2.

[0029] The one-way locking mechanism 3 includes a rectangular sliding shell 301, a rectangular sliding block 302, a trapezoidal plugging block 303 and a pulling block 304. The rectangular sliding shell 301 is fixedly installed on the front end surface of the limit plate 106, and the rectangular sliding block 302 is slidably connected inside the rectangular sliding shell 301; A trapezoidal plugging block 303 penetrating the head of the rectangular sliding shell 301 is provided on the head end surface of the rectangular sliding block 302, and a spring is provided at the tail end of the rectangular sliding block 302 inside the rectangular sliding shell 301; A pulling block 304 is fixedly connected to the front end surface of the rectangular sliding block 302, and a handle is provided on the pulling block 304; When the two one-way locking mechanisms 3 are in the locking and limiting state, the two trapezoidal plugging blocks 303 are respectively plugged into the two rectangular plugging through holes 108; Through the setting of the one-way locking mechanism 3, it is used to limit the one-way locking mechanism 3.

[0030] Embodiment 2, based on Embodiment 1, as Figure 1 , Figure 4 and Figure 10 shown, the limiting mechanism 4 includes a limiting housing 401, a rectangular slider 402, a rectangular sliding plate 403, a pulling handle 404, a limiting insertion rod 405, an L-shaped limiting block 406, a cushion block 407, a hexagonal sliding column 408 and a spring guide rod 409. The limiting housing 401 is fixedly connected to the front side of the outer circumference of the wind hood 1010, and a rectangular slider 402 is slidably connected inside the limiting housing 401; a limiting insertion rod 405 penetrating the head of the limiting housing 401 is fixedly connected to the head end face of the rectangular slider 402, and a spring guide rod 409 penetrating the tail of the limiting housing 401 is provided at the tail end face of the rectangular slider 402, and a spring is sleeved outside the spring guide rod 409 inside the limiting housing 401; a cushion block 407 is fixedly connected to the upper end face of the rectangular slider 402, and a hexagonal sliding column 408 is fixedly connected to the upper end face of the cushion block 407. A circular limiting plate is provided at the upper end of the hexagonal sliding column 408, and a rectangular sliding plate 403 is slidably connected to the outside of the hexagonal sliding column 408. A pulling handle 404 is fixedly connected to the rectangular sliding plate 403; a spring is sleeved between the rectangular sliding plate 403 and the circular limiting plate outside the hexagonal sliding column 408; an L-shaped limiting block 406 is fixedly connected to the upper end face of the limiting housing 401; when the two limiting mechanisms 4 are in the limiting state, the two limiting insertion rods 405 are respectively inserted into the two limiting insertion holes 1012; through the cooperation of the slide rail 109, the limiting insertion holes 1012 and the limiting mechanism 4, the wind hood 1010 can be removed from the rear end of the motor main body 1 without using tools, thus being more rapid.

[0031] The working principle of this embodiment: When in use, first place the mounting base 102 on a supporting object, then insert the four fixing bolts 2 into the four mounting plates 103 movably, and then screw the four fixing bolts 2 clockwise into the nuts on the supporting object. The nuts on the supporting object are fixed to the supporting object. When the fixing bolts 2 are screwed clockwise, the bottom end face of the annular limiting block 201 is in close contact with the upper end face of the mounting plate 103, and at this time, the lower end of the one-way limiting plate 204 is in close contact with the upper end face of the annular one-way limiting plate 104, and the one-way limiting plate 204 is located between two adjacent one-way limiting teeth 105. Since the edges on one side of the lower end face of the one-way limiting plate 204 are all rounded, and the edges on one side of the upper end face of each one-way limiting tooth 105 are all chamfered, and the one-way limiting plate 204 is slidably connected inside the strip-shaped chute 203 at this time, the annular limiting block 201 and the fixing bolts 2 can only rotate clockwise at this time and cannot rotate counterclockwise, thus effectively avoiding the loosening of the fixing bolts 2.

[0032] When the motor main body 1 needs to be disassembled and repaired, simply manually pull the handles on the two pulling blocks 304 in opposite directions at the same time, then the two rectangular sliding blocks 302 and the two trapezoidal insertion blocks 303 can be moved in opposite directions at the same time, so that the two trapezoidal insertion blocks 303 are respectively pulled out from the two rectangular insertion through holes 108, so that the two insertion plates 107 lose their limiting effect. Then push the motor main body 1 backward, and the motor base 101 can be slid and separated from the mounting seat 102. When the motor base 101 slides backward and separates from the upper part of the mounting seat 102, the motor main body 1 is disassembled.

[0033] When the wind cover 1010 needs to be removed from the rear end of the motor main body 1, simply move the pulling handle 404 upward so that the pulling handle 404 is higher than the L-shaped limiting block 406. Then move the pulling handle 404 toward the tail end of the spring guide rod 409, so that the pulling handle 404 drives the rectangular sliding plate 403, the hexagonal sliding column 408, the cushion block 407, the rectangular sliding block 402 and the limiting insertion rod 405 to move toward the tail end of the spring guide rod 409, so that the limiting insertion rod 405 is pulled out from the limiting insertion hole 1012. Then, the pulling handle 404 is stuck at the lower part of the rear side of the L-shaped limiting block 406 to realize the limiting of the limiting insertion rod 405. When the two limiting insertion rods 405 are pulled out from the two limiting insertion holes 1012, the wind cover 1010 loses its limiting effect at the rear end of the motor main body 1. Finally, the wind cover 1010 can be removed from the rear end of the motor main body 1.

[0034] In this article, the following points need attention: 1. The attached drawings of the embodiments of the present disclosure only involve the structures related to the embodiments of the present disclosure. Other structures can refer to the general design.

[0035] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A motor that is easy to maintain, comprising: A motor body (1); a motor base (101) is provided at the bottom of the motor body (1), and the bottom end surface of the motor base (101) is evenly provided with four T-shaped slide bars, and the bottom of the motor base (101) is slidably connected to a mounting seat (102) via the four T-shaped slide bars; it is characterized in that two mounting plates (103) are provided on the left and right sides of the mounting seat (102), and each mounting plate (103) is provided with a mounting hole, and a fixing bolt (2) is movably inserted in each mounting hole; a limit plate (106) is fixedly connected to the front end surface of the mounting seat (102), and two one-way locking mechanisms (3) are installed on the front end surface of the limit plate (106) in a left-right symmetrical shape; a wind shield (1010) is installed at the rear end of the motor body (1), and a limit mechanism (4) is provided on the left and right sides of the wind shield (1010); An annular one-way limiting plate (104) is fixedly mounted on the upper end surface of each mounting plate (103), and each annular one-way limiting plate (104) is provided with one-way limiting tooth blocks (105) in an annular array on the upper end surface, and the corners on one side of the upper end surface of each one-way limiting tooth block (105) are chamfered; The front end surface of the motor base (101) is fixedly connected to two plug-in plates (107), and the right end surface of each plug-in plate (107) is provided with a rectangular plug-in through hole (108), so that the two plug-in plates (107) can pass through the limiting plate (106); The fixing bolt (2) is externally fixedly connected to an annular limit block (201), and the outer peripheral surface of the annular limit block (201) is provided with two strip-shaped sliding grooves (203); the tightening direction of the fixing bolt (2) is clockwise; The fixing bolt (2) is externally slidably connected to an annular sliding plate (202), and the annular sliding plate (202) is located on the upper part of the annular limiting block (201); the bottom end surface of the annular sliding plate (202) is fixedly connected to two one-way limiting plates (204) in an annular array shape, and the two one-way limiting plates (204) can be slidably connected to the two strip-shaped sliding grooves (203); the corners on one side of the lower end surface of each one-way limiting plate (204) are set as rounded corners; the fixing bolt (2) An annular limit plate (205) is fixedly connected to the bottom of the hexagonal rotating block, and a spring is sleeved between the annular limit plate (205) and the annular sliding plate (202) on the outside of the fixing bolt (2); when the one-way limit plate (204) is in a one-way limit state, the lower end of the one-way limit plate (204) is in close contact with the upper end surface of the annular one-way limit plate (104), and the one-way limit plate (204) is located between two adjacent one-way limit tooth blocks (105); The one-way locking mechanism (3) comprises a rectangular sliding shell (301), a rectangular sliding block (302), a trapezoidal plug-in block (303) and a pulling block (304); the rectangular sliding shell (301) is fixedly mounted on the front end surface of the limiting plate (106), and the rectangular sliding block (302) is slidably connected inside the rectangular sliding shell (301); the head end surface of the rectangular sliding block (302) is provided with a trapezoidal plug-in block (303) penetrating the head of the rectangular sliding shell (301), and the inside of the rectangular sliding shell (301) is provided with a spring at the rear end of the rectangular sliding block (302); the front end surface of the rectangular sliding block (302) is fixedly connected with the pulling block (304), and the pulling block (304) is provided with a handle; when the two one-way locking mechanisms (3) are in a locked limit state, the two trapezoidal plug-in blocks (303) are respectively plugged into the two rectangular plug-in through holes (108).

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