A shaded-pole motor stator winding device

Abstract

The present invention relates to the technical field of shaded pole motors, and in particular to a shaded pole motor stator winding device, comprising a bottom plate and a support leg, wherein the bottom plate is provided with a lower groove, the support leg is fixedly arranged on the lower side of the bottom plate, a side plate is fixedly arranged on the bottom plate, one end of the side plate away from the bottom plate is fixedly connected to a top plate, and the top plate is provided with an upper groove; an expansion and contraction mechanism, which is fixedly installed on the side plate; a reciprocating mechanism, which is installed in the lower groove provided on the bottom plate, and the power output end of the reciprocating mechanism is fixedly connected to the winding mechanism; a first trigger block, which is fixedly installed in the lower groove; a pressing mechanism, which is installed in the upper groove provided on the top plate, and the lower end of the pressing mechanism is arranged in the lower groove and is provided with a second trigger block. The shaded pole motor stator winding device provided by the present invention can not only wind the stator, but also wind stators of different sizes, has good versatility, further facilitates the fixing of the stator, ensures the stability of the stator during winding, and has strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of shaded-pole motors, and in particular to a stator winding device for shaded-pole motors. Background Art

[0002] The structure of the shaded pole motor is relatively simple, and its basic structure includes two parts: the stator and the rotor. The stator is provided with a main winding and a self-closed secondary winding or shaded pole winding. These two sets of windings are arranged non-orthogonally in space. The main winding is mostly in the form of concentrated winding, while the secondary winding is a short-circuited coil placed on the local magnetic pole, namely the shaded pole coil. This design enables the motor to generate a rotating air gap magnetic field after power is applied, thereby achieving self-starting and normal operation. In order to optimize the performance of the motor, some measures can also be taken, such as stepped air gap, magnetic bridge, etc., to improve the performance of the motor.

[0003] During the production of shaded-pole motors, coils need to be wound on the stators. Although the existing winding devices are capable of performing the winding work, there are still some problems. First, the current winding devices can only wind stators of specified sizes and are difficult to adapt to stators of different sizes, and have poor versatility. Second, the current winding devices are not convenient for fixing the stators, and the stators may shift in position during winding. Therefore, a shaded-pole motor stator winding device is needed to solve the above problems. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a shaded-pole motor stator winding device, aiming to solve the following problem: the existing winding device can only wind stators of a specified size and is inconvenient to fix the stator.

[0005] The embodiment of the present invention is implemented as follows: a stator winding device for a shaded-pole motor comprises: a bottom plate and a supporting leg, wherein the bottom plate is provided with a lower groove, the supporting leg is fixedly arranged on the lower side of the bottom plate, a side plate is fixedly arranged on the bottom plate, one end of the side plate away from the bottom plate is fixedly connected to a top plate, and the top plate is provided with an upper groove; an expansion and contraction mechanism, which is fixedly installed on the side plate, and the power output end of the expansion and contraction mechanism is used to extend outward to fix the stator; a reciprocating mechanism, which is installed in the lower groove provided on the bottom plate, the power output end of the reciprocating mechanism is fixedly connected to the winding mechanism, the stator is arranged in the winding mechanism, the reciprocating mechanism is used to drive the winding mechanism to reciprocate, and the winding mechanism is used to wind the stator; a first trigger block, which is fixedly installed in the lower groove, the first trigger block is used to control the reciprocating mechanism to drive the winding mechanism to move in the reverse direction; a pressing mechanism, which is installed in the upper groove provided on the top plate, the pressing mechanism is used to press against the left end of the stator, the lower end of the pressing mechanism is arranged in the lower groove and is provided with a second trigger block, and the second trigger block is used to control the reciprocating mechanism to drive the winding mechanism to move in the reverse direction.

[0006] Preferably, the expansion and contraction mechanism includes: a support ring, which is fixedly mounted on the side plate, a guide column is fixedly provided on the inner wall of the support ring, a guide sleeve is sleeved on the guide column, a first mounting plate is fixedly provided on the guide sleeves on both sides, and a first clamping plate is fixedly mounted on the first mounting plate; an electric telescopic rod, which is fixedly connected to the inner wall of the support ring, and a power output end of the electric telescopic rod is fixedly connected to the first mounting plate on one side, so as to drive the first mounting plate to move; a guide rod, whose two ends are fixedly connected to the inner wall of the support ring, a second mounting plate is sleeved on the guide rod, and a linkage rod is hinged between the second mounting plate and the first mounting plate on both sides; a second clamping plate, which is fixedly mounted on the second mounting plate, and the first clamping plate and the second clamping plate are used to expand outward to fit tightly against the inner wall of the stator.

[0007] Preferably, the reciprocating mechanism includes: a first power member, which is fixedly mounted on the inner wall of the lower groove opened on the bottom plate, and the output shaft of the first power member is fixedly connected to the first gear; a screw rod, whose two ends are rotatably connected to the inner wall of the groove, and one side of the screw rod is fixed with a second gear meshing with the first gear; a sliding rod, whose two ends are fixedly connected to the inner wall of the groove and are distributed on both sides of the screw rod, and the sliding rods on both sides are sleeved with reciprocating plates threadedly connected to the screw rod; a connecting rod, one end of which is fixedly connected to the reciprocating plate, and the winding mechanism is fixedly connected to the other end of the connecting rod, and the reciprocating plate is used to drive the winding mechanism to move through the connecting rod.

[0008] Preferably, a first trigger switch and a second trigger switch are respectively installed on both sides of the reciprocating plate, and the first trigger switch and the second trigger switch are used to change the rotation direction of the output shaft of the first power member.

[0009] Preferably, the winding mechanism includes: a cylinder, which is fixedly connected to the reciprocating mechanism, the reciprocating mechanism is used to drive the cylinder to move back and forth, and an annular rack is fixedly provided on the inner wall of the cylinder and a wheel groove is opened; a moving component, which is slidably set in the wheel groove opened in the cylinder and meshes with the annular rack; a bracket, which is installed on the moving component, and a wire coil is rotatably set on the bracket, and the wire coil is used to wind the wire around the stator.

[0010] Preferably, the moving component includes: a guide wheel, which is slidably mounted in the wheel groove formed by the cylinder, a wheel rod is fixedly mounted on the guide wheel, an end of the wheel rod away from the guide wheel is fixedly connected to a wheel frame, and a bracket is mounted on the wheel frame; a second power member, which is mounted on the wheel frame, a second power member output shaft is fixedly connected to a third gear, and the third gear is meshed with a fourth gear rotatably mounted on the wheel frame; a moving gear, which is rotatably mounted in the wheel frame and fixedly connected to the fourth gear, and a ring rack is meshed with the moving gear.

[0011] Preferably, the clamping mechanism comprises: a cross bar, both ends of which are fixedly connected to the inner wall of the upper groove formed on the top plate, a sleeve block is sleeved on the cross bar, a push spring is fixedly connected between the sleeve block and the inner wall of the upper groove; a slide groove is fixed on the inner wall of the upper groove, a pulley mounted on the sleeve block is slidably arranged in the slide groove; a pulling plate, one end of which is fixedly connected to the sleeve block, a clamping plate for clamping the left end of the stator is installed on one side of the pulling plate, and a handle for pulling the clamping plate away from the stator is installed on the other side, and a second trigger block is installed at the lower end of the pulling plate.

[0012] The shaded-pole motor stator winding device provided by the present invention can not only wind the stator, but also wind stators of different sizes, has good versatility, further facilitates the fixation of the stator, ensures the stability of the stator during winding, is simple to operate, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the stator winding device of the shaded-pole motor.

[0014] Figure 2 This is a three-dimensional diagram of the expansion and contraction mechanism of the stator winding device of the shaded-pole motor.

[0015] Figure 3 This is a schematic diagram of the expansion and contraction mechanism of the stator winding device of the shaded-pole motor.

[0016] Figure 4 This is a schematic diagram of the internal structure of the reciprocating mechanism of the stator winding device of the shaded-pole motor.

[0017] Figure 5 Schematic diagram of the winding mechanism of the stator winding device of the shaded-pole motor.

[0018] Figure 6 This is a schematic diagram of the wheel groove of the stator winding device of the shaded pole motor.

[0019] In the accompanying drawings: 1-bottom plate, 2-support leg, 3-side plate, 4-top plate, 5-expansion and contraction mechanism, 6-reciprocating mechanism, 7-winding mechanism, 8-first trigger block, 9-tightening mechanism, 10-second trigger block, 51-support ring, 52-guide column, 53-guide sleeve, 54-first mounting plate, 55-first clamping plate, 56-electric telescopic rod, 57-guide rod, 58-second mounting plate, 59-linking rod, 510-second clamping plate, 61-first power member, 62-first gear, 63-screw rod, 64-second gear, 65-sliding Rod, 66-reciprocating plate, 67-connecting rod, 68-first trigger switch, 69-second trigger switch, 71-cylinder, 72-annular rack, 73-wheel groove, 74-moving assembly, 75-bracket, 76-wire reel, 741-guide wheel, 742-wheel rod, 743-wheel frame, 744-second power member, 745-third gear, 746-fourth gear, 747-moving gear, 91-cross bar, 92-block, 93-push spring, 94-slide groove, 95-pulley, 96-pull plate, 97-tight plate, 98-handle. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] See also Figure 1 , an embodiment of the present invention provides a shaded-pole motor stator winding device, the shaded-pole motor stator winding device comprising:

[0023] A bottom plate 1 and a supporting leg 2, wherein the bottom plate 1 is provided with a lower groove, the supporting leg 2 is fixedly arranged on the lower side of the bottom plate 1, a side plate 3 is fixedly arranged on the bottom plate 1, and the end of the side plate 3 away from the bottom plate 1 is fixedly connected to a top plate 4, and the top plate 4 is provided with an upper groove; an expansion and contraction mechanism 5, which is fixedly installed on the side plate 3, and the power output end of the expansion and contraction mechanism 5 is used to extend outward to fix the stator; a reciprocating mechanism 6, which is installed in the lower groove provided on the bottom plate 1, and the power output end of the reciprocating mechanism 6 is fixedly connected to a winding mechanism 7, and the stator is arranged on the winding In the mechanism 7, the reciprocating mechanism 6 is used to drive the winding mechanism 7 to move back and forth, and the winding mechanism 7 is used to wind the stator; the first trigger block 8 is fixedly installed in the lower groove, and the first trigger block 8 is used to control the reciprocating mechanism 6 to drive the winding mechanism 7 to move in the opposite direction; the clamping mechanism 9 is installed in the upper groove opened in the top plate 4, and the clamping mechanism 9 is used to clamp the left end of the stator, and the lower end of the clamping mechanism 9 is arranged in the lower groove and is installed with the second trigger block 10, and the second trigger block 10 is used to control the reciprocating mechanism 6 to drive the winding mechanism 7 to move in the opposite direction.

[0024] When using the stator winding device of the shaded pole motor, first pull the clamping mechanism 9 to the left to facilitate the stator to pass through the winding mechanism 7 and be placed on the expansion and contraction mechanism 5, release the clamping mechanism 9, and the clamping mechanism 9 can be clamped to the left end of the stator under the action of its own elastic force, and at the same time drive the second trigger block 10 to move to the left, open the expansion and contraction mechanism 5, the power output ends of the expansion and contraction mechanism 5 can move away from each other and close to the inner wall of the stator, so that the stator can be fixed, and then one end of the wire on the winding mechanism 7 is fixed to the stator, and the winding mechanism 7 and the reciprocating mechanism 6 are turned on. After the reciprocating mechanism 6 contacts the first trigger block 8 and the second trigger block 10, the direction of movement can be changed, thereby driving the winding mechanism 7 to move back and forth, and the winding mechanism 7 can evenly wind the stator.

[0025] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the present invention, the expansion and contraction mechanism 5 includes: a support ring 51, which is fixedly mounted on the side plate 3, a guide column 52 is fixedly arranged on the inner wall of the support ring 51, a guide sleeve 53 is sleeved on the guide column 52, a first mounting plate 54 is fixedly arranged on the guide sleeve 53 on both sides, and a first clamping plate 55 is fixedly mounted on the first mounting plate 54; an electric telescopic rod 56, which is fixedly connected to the inner wall of the support ring 51, and the power output end of the electric telescopic rod 56 is fixedly connected to the first mounting plate 54 on one side, which is used to drive the first mounting plate 54 to move; a guide rod 57, both ends of which are fixedly connected to the inner wall of the support ring 51, a second mounting plate 58 is sleeved on the guide rod 57, and a linkage rod 59 is hinged between the second mounting plate 58 and the first mounting plate 54 on both sides; a second clamping plate 510, which is fixedly mounted on the second mounting plate 58, and the first clamping plate 55 and the second clamping plate 510 are used to expand outward to fit closely to the inner wall of the stator.

[0026] When fixing the stator, the stator is passed through the winding mechanism 7 and sleeved on the first clamping plate 55 and the second clamping plate 510, and then the electric telescopic rod 56 is turned on. The electric telescopic rod 56 drives the first mounting plate 54 on one side to move, and the first mounting plate 54 on one side enables the linkage rod 59 on one side to drive the second mounting plates 58 on both sides to move away from each other along the guide rod 57. When the second mounting plates 58 on both sides move away from each other, the linkage rod 59 on the other side can push the first mounting plate 54 on the other side to move. When the first mounting plates 54 on both sides move away from each other, the first clamping plates 55 on both sides can be driven away from each other and pressed against the inner wall of the stator. When the second mounting plates 58 on both sides move away from each other, the second clamping plates 510 on both sides can be driven away from each other. When the second clamping plates 510 on both sides move away from each other, they can be pressed against the inner wall of the stator, thereby fixing the stator.

[0027] like Figure 4As shown, as a preferred embodiment of the present invention, the reciprocating mechanism 6 includes: a first power member 61, which is fixedly mounted on the inner wall of the lower groove opened on the base plate 1, and the output shaft of the first power member 61 is fixedly connected to the first gear 62; a screw rod 63, both ends of which are rotatably connected to the inner wall of the groove, and one side of the screw rod 63 is fixed with a second gear 64 meshing with the first gear 62; a sliding rod 65, both ends of which are fixedly connected to the inner wall of the groove and distributed on both sides of the screw rod 63, and a reciprocating plate 66 threadedly connected to the screw rod 63 is sleeved on the sliding rod 65 on both sides; a connecting rod 67, one end of which is fixedly connected to the reciprocating plate 66, and the winding mechanism 7 is fixedly connected to the other end of the connecting rod 67, and the reciprocating plate 66 is used to drive the winding mechanism 7 to move through the connecting rod 67.

[0028] like Figure 4 As shown, as a preferred embodiment of the present invention, a first trigger switch 68 and a second trigger switch 69 are respectively installed on both sides of the reciprocating plate 66, and the first trigger switch 68 and the second trigger switch 69 are used to change the rotation direction of the output shaft of the first power member 61.

[0029] When controlling the reciprocating movement of the winding mechanism 7, the first power member 61 is turned on, and the output shaft of the first power member 61 drives the first gear 62 to rotate, and the first gear 62 drives the second gear 64 and the screw rod 63 to rotate. The rotation of the screw rod 63 causes the reciprocating plate 66 to drive the connecting rod 67 to move along the sliding rod 65. When the reciprocating plate 66 drives the first trigger switch 68 to contact the first trigger block 8, the first trigger switch 68 controls the output shaft of the first power member 61 to rotate in the opposite direction. At this time, the reciprocating plate 66 can move to the left. When the reciprocating plate 66 drives the second trigger switch 69 to contact the second trigger block 10, the second trigger switch 69 controls the output shaft of the first power member 61 to rotate in the opposite direction again. At this time, the reciprocating plate 66 can move to the right, realizing the reciprocating movement of the reciprocating plate 66. The reciprocating movement of the reciprocating plate 66 can drive the winding mechanism 7 to move back and forth, so that the wire can be evenly wound on the stator.

[0030] Furthermore, for stators of different sizes, since the pressing mechanism 9 can always press against the left end of the stators of different sizes, and the second trigger block 10 is installed at the lower end of the pressing mechanism 9, it is ensured that the winding mechanism 7 can move to the left end of the stators of different sizes and then change the moving direction.

[0031] like Figure 5 and Figure 6As shown, as a preferred embodiment of the present invention, the winding mechanism 7 includes: a cylinder 71, which is fixedly connected to the reciprocating mechanism 6, the reciprocating mechanism 6 is used to drive the cylinder 71 to move back and forth, and the inner wall of the cylinder 71 is fixedly provided with an annular rack 72 and a wheel groove 73; a moving component 74, which is slidably arranged in the wheel groove 73 provided in the cylinder 71 and meshed with the annular rack 72; a bracket 75, which is installed on the moving component 74, and a wire reel 76 is rotatably arranged on the bracket 75, and the wire reel 76 is used to wind the wire around the stator.

[0032] like Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, the moving component 74 includes: a guide wheel 741, which is slidably mounted on the wheel groove 73 opened by the cylinder 71, and a wheel rod 742 is fixedly mounted on the guide wheel 741, and the end of the wheel rod 742 away from the guide wheel 741 is fixedly connected to the wheel frame 743, and the bracket 75 is mounted on the wheel frame 743; a second power member 744, which is mounted on the wheel frame 743, and the output shaft of the second power member 744 is fixedly connected to the third gear 745, and the third gear 745 is meshed with a fourth gear 746 rotatably mounted on the wheel frame 743; a moving gear 747, which is rotatably mounted in the wheel frame 743 and fixedly connected to the fourth gear 746, and the annular rack 72 is meshed with the moving gear 747.

[0033] When winding, first use bolts to fix the bracket 75 to the wheel frame 743, and fix one end of the wire to the stator, turn on the second power member 744, the second power member 744 is specifically a motor, the output shaft of the second power member 744 drives the third gear 745 to rotate, the third gear 745 drives the fourth gear 746 and the moving gear 747 to rotate, the moving gear 747 can move around the annular rack 72 when it rotates, and at the same time the wheel rod 742 drives the guide wheel 741 to slide in the wheel groove 73, ensuring the stability of the circular motion of the moving gear 747, thereby driving the wheel frame 743 and the wire reel 76 to make a circular motion, and the wire reel 76 can make a circular motion to wind the stator.

[0034] like Figure 1 As shown, as a preferred embodiment of the present invention, the clamping mechanism 9 includes: a cross bar 91, both ends of which are fixedly connected to the inner wall of the upper groove opened on the top plate 4, a sleeve block 92 is sleeved on the cross bar 91, and a push spring 93 is fixedly connected between the sleeve block 92 and the inner wall of the upper groove; a slide groove 94, which is fixed on the inner wall of the upper groove, and a pulley 95 installed on the sleeve block 92 is slidably arranged in the slide groove 94; a pulling plate 96, one end of which is fixedly connected to the sleeve block 92, a clamping plate 97 for clamping the left end of the stator is installed on one side of the pulling plate 96, and a pull handle 98 for pulling the clamping plate 97 away from the stator is installed on the other side, and a second trigger block 10 is installed at the lower end of the pulling plate 96.

[0035] When fixing the stator, pull the handle 98 to the right, and the handle 98 drives the pull plate 96, the sleeve block 92 and the pulley 95 to move to the left along the cross bar 91 and the slide groove 94 and compress the push spring 93. The pull plate 96 moves to the left and drives the clamping plate 97 to move to the left. At this time, it is convenient to pass the stator through the winding mechanism 7 and put it on the expansion and contraction mechanism 5. Release the handle 98, and the push spring 93 can push the clamping plate 97 to press against the left end of the stator, and at the same time drive the second trigger block 10 to move to the left, ensuring that the second trigger switch 69 can smoothly contact the second trigger block 10 when the winding mechanism 7 moves to the left end of the stator.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shaded-pole motor stator winding device, comprising a base plate and a support leg, characterized in that: The bottom plate is provided with a lower groove, the support legs are fixedly arranged on the lower side of the bottom plate, the bottom plate is fixedly provided with a side plate, one end of the side plate away from the bottom plate is fixedly connected to the top plate, and the top plate is provided with an upper groove; An expansion and contraction mechanism is fixedly mounted on the side plate, and a power output end of the expansion and contraction mechanism is used to extend outward to fix the stator; A reciprocating mechanism is installed in a lower groove provided in the bottom plate, a power output end of the reciprocating mechanism is fixedly connected with a winding mechanism, a stator is arranged in the winding mechanism, the reciprocating mechanism is used to drive the winding mechanism to move back and forth, and the winding mechanism is used to wind the stator; A first trigger block, which is fixedly installed in the lower groove, and is used to control the reciprocating mechanism to drive the winding mechanism to move in the reverse direction; The pressing mechanism is installed in the upper groove of the top plate, and is used to press the left end of the stator. The lower end of the pressing mechanism is arranged in the lower groove and is provided with a second trigger block, and the second trigger block is used to control the reciprocating mechanism to drive the winding mechanism to move in the reverse direction. The expansion and contraction mechanism comprises: a support ring, which is fixedly mounted on the side plate, a guide column is fixedly arranged on the inner wall of the support ring, a guide sleeve is sleeved on the guide column, a first mounting plate is fixedly arranged on the guide sleeve, and a first clamping plate is fixedly mounted on the first mounting plate; An electric telescopic rod, which is fixedly connected to the inner wall of the support ring, and a power output end of the electric telescopic rod is fixedly connected to the first mounting plate, and is used to drive the first mounting plate to move; A guide rod, both ends of which are fixedly connected to the inner wall of the support ring, a second mounting plate is sleeved on the guide rod, and a linkage rod is hinged between the second mounting plate and the first mounting plate; A second clamping plate, which is fixedly mounted on the second mounting plate, and the first clamping plate and the second clamping plate are used to expand outwards to be close to the inner wall of the stator; The reciprocating mechanism comprises: a first power member fixedly mounted on the inner wall of the lower groove formed in the bottom plate, and an output shaft of the first power member fixedly connected to a first gear; A screw rod, both ends of which are rotatably connected to the inner wall of the groove, and a second gear meshing with the first gear is fixed to one side of the screw rod; A sliding rod, both ends of which are fixedly connected to the inner wall of the groove and are distributed on both sides of the screw rod, and a reciprocating plate which is threadedly connected to the screw rod is sleeved on the sliding rod; A connecting rod, one end of which is fixedly connected to the reciprocating plate, and the winding mechanism is fixedly connected to the other end of the connecting rod, and the reciprocating plate is used to drive the winding mechanism to move through the connecting rod; A first trigger switch and a second trigger switch are respectively installed on both sides of the reciprocating plate, and the first trigger switch and the second trigger switch are used to change the rotation direction of the output shaft of the first power member; The winding mechanism comprises: a cylinder, the cylinder is fixedly connected to a reciprocating mechanism, the reciprocating mechanism is used to drive the cylinder to move back and forth, and an annular rack is fixedly arranged on the inner wall of the cylinder and a wheel groove is opened; A moving assembly is slidably disposed in a wheel groove provided in the cylinder and meshes with the annular rack; A bracket is mounted on the moving assembly, and a wire coil is rotatably arranged on the bracket, and the wire coil is used to wind the wire around the stator; The moving assembly comprises: a guide wheel, which is slidably mounted on a wheel groove provided in the cylinder, a wheel rod is fixedly mounted on the guide wheel, an end of the wheel rod away from the guide wheel is fixedly connected to a wheel frame, and a bracket is mounted on the wheel frame; A second power member is mounted on the wheel frame, an output shaft of the second power member is fixedly connected to a third gear, and the third gear is meshed with a fourth gear rotatably mounted on the wheel frame; The moving gear is rotatably mounted in the wheel frame and fixedly connected to the fourth gear, and the annular rack is meshed with the moving gear.

2. The shaded-pole motor stator winding device according to claim 1, characterized in that: The clamping mechanism comprises: The cross bar has two ends fixedly connected to the inner wall of the upper groove formed on the top plate, a sleeve block is sleeved on the cross bar, and a push spring is fixedly connected between the sleeve block and the inner wall of the upper groove; A slide groove is fixed on the inner wall of the upper groove, and a pulley mounted on the sleeve block is slidably arranged in the slide groove; The pull plate has one end fixedly connected to the sleeve block, one side of the pull plate is provided with a close plate for close contact with the left end of the stator, and the other side is provided with a handle for pulling the close plate away from the stator, and the second trigger block is provided at the lower end of the pull plate.

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