Automatic press-fitting equipment for generator assembly

Abstract

The invention discloses automatic press-fitting equipment for generator assembly, and relates to the technical field of generator assembly, the automatic press-fitting equipment comprises a press-fitting base and a transmission type discharging assembly, an output motor is fixed to the bottom of the press-fitting base, and the transmission type discharging assembly is arranged in a material rotating disc; a force storage spring is arranged between the elastic piston rod and the transmission piston rod in the pipe sleeve, and the outer wall of the output motor is rotationally connected with a fixed cam. According to the automatic press-fitting equipment for generator assembly, the opening of the discharging groove can be opened in the discharging area through rotation of the material rotating disc, the force storage spring stretches and resets and releases kinetic energy, so that the elastic piston rod carries the material returning plate to stretch out to push a generator assembly to be separated from the discharging groove, and therefore the press-fitted part is rapidly transferred; the labor burden is reduced, the discharging efficiency is improved, meanwhile, a high-precision mechanical arm does not need to be configured, reciprocating motion of the mechanical arm is not needed, the discharging time consumption is shortened, and meanwhile the cost for configuring a mechanical mechanism for discharging is effectively saved.

Description

Technical Field

[0001] The invention relates to the technical field of generator assembly, in particular to automatic press-assembly equipment for generator assembly. Background Art

[0002] A generator is a mechanical device that converts other forms of energy into electrical energy. There are many forms of generators, but their working principles are all based on the laws of electromagnetic induction and electromagnetic force. In the engine production process, engine components A and engine components B need to be pressed together, so automatic pressing equipment is needed, such as pressing the sleeve onto the shaft.

[0003] After the existing automatic press-fitting equipment presses the sleeve onto the shaft, it is often necessary for a robot or manual labor to lift the pressed component upward from the rotating material plate and transfer it to the next work area to complete the unloading. Manual lifting for unloading results in low efficiency, and mechanical mechanisms such as robots need to meet the requirements of reciprocating precise movement, positioning and clamping for unloading, resulting in high costs.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an automatic press-fitting device for assembling a generator is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automatic press-fitting device for assembling a generator, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic press-fitting device for assembling a generator, comprising a press-fitting base and a transmission type blanking assembly, an output motor is fixed at the bottom of the press-fitting base, and the top output end of the output motor is connected to a rotating disk, a discharge trough is provided on the surface of the rotating disk, and the transmission type blanking assembly is arranged inside the rotating disk, the transmission type blanking assembly comprises a sleeve, a transmission piston rod, a force storage spring, an elastic piston rod, a stripping plate, a fixed cam and a support rod, a transmission piston rod is penetrated inside the end of the sleeve close to the output end of the output motor, and an elastic piston rod is penetrated inside the end of the sleeve away from the transmission piston rod, a force storage spring is provided inside the sleeve between the elastic piston rod and the transmission piston rod, and a stripping plate is fixed to the end of the elastic piston rod, the outer wall of the output motor is rotatably connected to the fixed cam, and a support rod is fixed to the bottom of the fixed cam.

[0007] Furthermore, the pipe sleeve is fixedly connected to the inner wall of the rotating material tray through a bracket, and the transmission piston rod is elastically connected to the elastic piston rod through a force storage spring inside the pipe sleeve.

[0008] Furthermore, the outer side surface of the stripping plate is flush with the inner side surface of the material discharge trough, and the stripping plate is elastically connected to the pipe sleeve through an elastic piston rod.

[0009] Furthermore, the outer side surface of the fixed cam fits with the round head end of the transmission piston rod, and the fixed cam is fixedly connected to the press-fit base via a support rod.

[0010] Furthermore, a support frame is provided on the surface of the press-fitting base at one side of the rotating disk, and a press-fitting mechanism is fixed on the top of the support frame.

[0011] Furthermore, an inner groove is provided inside the rotating disc, and a solid material component is arranged inside the inner groove.

[0012] Furthermore, the material fixing assembly includes an arc spring and a material fixing plate, and one end of the arc spring is connected to the material fixing plate.

[0013] Furthermore, the material fixing plate is elastically connected to the rotating disc via an arc spring, and the inner wall of the material fixing plate and the inner wall of the material discharge trough are in contact with the outer wall of the component to be pressed.

[0014] Furthermore, the solid material assembly also includes a torsion spring shaft and a force-bearing paddle. The outer wall of the solid material plate is provided with a torsion spring shaft, and the outer wall of the torsion spring shaft is connected to the force-bearing paddle.

[0015] Furthermore, the solid material assembly also includes a force-applying paddle in the material discharge area, and a force-applying paddle is arranged on the outer side surface of the force-applying paddle, and the outer side surface of the force-applying paddle is fixedly connected to the press-fitting base through a support rod.

[0016] The present invention provides an automatic press-fitting device for assembling a generator, which has the following beneficial effects:

[0017] 1. The automatic press-fitting equipment for assembling the generator utilizes the rotation of the rotating disc to automatically retract the fixed material plate into the inner groove in the unloading area after completing the press-fitting operation of the generator assembly so that the opening of the unloading groove is open. At the same time, the round head end of the transmission piston rod is located at the convex end of the fixed cam, and the storage spring stretches and resets and releases kinetic energy to make the elastic piston rod carry the stripping plate to extend to push the generator assembly A out of the unloading groove, thereby quickly transferring the pressed parts. Only a transfer device needs to be set in the unloading area, which reduces the labor burden and improves the unloading efficiency without the need to configure a high-precision manipulator. The manipulator does not need to move back and forth to shorten the unloading time and effectively saves the cost of configuring the mechanical mechanism for unloading.

[0018] 2. The automatic pressing equipment for assembling the generator, after the generator assembly is pressed and rotated toward the lower material area, the force-applying paddle in the lower material area pushes the force-applying paddle in disguise during the rotation of the force-bearing paddle so that it carries the solid material plate and retracts into the inner groove until the solid material plate retracts to the opening of the discharge trough and is fully opened, so that the material withdrawal plate can extend to withdraw the generator assembly to complete the unloading, and then the rotating disc continues to rotate. During the rotation, the force-applying paddle in the lower material area is misaligned with the force-bearing paddle. At this time, the rotating disc continues to rotate while the arc spring inside the inner groove stretches and resets, so that the solid material plate extends out to cover the opening of the discharge trough again, so as to facilitate the stabilization of the generator assembly to be loaded in the subsequent loading area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the internal structure of a rotating tray of an automatic press-fitting device for assembling a generator according to the present invention;

[0020] Figure 2 A schematic diagram of the external structure of a rotating tray of an automatic press-fitting device for assembling a generator according to the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of an inner tank of an automatic press-fitting device for assembling a generator according to the present invention;

[0022] Figure 4 An automatic press-fitting device for assembling a generator according to the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of a force storage spring and an elastic piston rod of an automatic press-fitting device for assembling a generator according to the present invention.

[0024] In the figure: 1. Press-fit base; 2. Output motor; 3. Rotating plate; 4. Transmission type unloading assembly; 401. Pipe sleeve; 402. Transmission piston rod; 403. Accumulation spring; 404. Elastic piston rod; 405. Unloading plate; 406. Fixed cam; 407. Support rod; 5. Support frame; 6. Press-fit mechanism; 7. Inner groove; 8. Solid material assembly; 801. Arc spring; 802. Solid material plate; 803. Torsion spring shaft; 804. Force paddle; 805. Force paddle in unloading area; 9. Discharge trough. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] like Figure 1-Figure 5As shown, the present invention provides a technical solution: an automatic press-fitting device for assembling a generator, comprising a press-fitting base 1 and a transmission type blanking component 4, an output motor 2 is fixed at the bottom of the press-fitting base 1, and the top output end of the output motor 2 is connected to a rotating disk 3, a discharge trough 9 is provided on the surface of the rotating disk 3, and the transmission type blanking component 4 is arranged inside the rotating disk 3, and the transmission type blanking component 4 comprises a sleeve 401, a transmission piston rod 402, a force storage spring 403, an elastic piston rod 404, a stripping plate 405, a fixed cam 406 and a support rod 407, a transmission piston rod 402 is penetrated in one end of the sleeve 401 close to the output end of the output motor 2, and an elastic piston rod 404 is penetrated in one end of the sleeve 401 away from the transmission piston rod 402, and a sleeve 401 is provided inside between the elastic piston rod 404 and the transmission piston rod 402 A force storage spring 403, and a stripping plate 405 is fixed to the end of the elastic piston rod 404, the outer wall of the output motor 2 is rotatably connected to a fixed cam 406, and a support rod 407 is fixed to the bottom of the fixed cam 406, the sleeve 401 is fixedly connected to the inner wall of the rotating material disc 3 through a bracket, the transmission piston rod 402 is elastically connected to the elastic piston rod 404 through the force storage spring 403 inside the sleeve 401, the outer side surface of the stripping plate 405 is flush with the inner side surface of the discharge trough 9, and the stripping plate 405 is elastically connected to the sleeve 401 through the elastic piston rod 404, the outer side surface of the fixed cam 406 is fitted with the round head end of the transmission piston rod 402, and the fixed cam 406 is fixedly connected to the press-fitting base 1 through the support rod 407, and a support frame 5 is provided on the surface of the press-fitting base 1 on one side of the rotating material disc 3, and a press-fitting mechanism 6 is fixed to the top of the support frame 5;

[0027] The specific operation is as follows: the output motor 2 drives the rotating material tray 3 to rotate clockwise, and the generator assembly A, such as the shaft body to be press-fitted with the shaft sleeve, is placed inside the discharge trough 9. The surface of the rotating material tray 3 at the nine o'clock direction is the loading area, the surface of the rotating material tray 3 directly below the press-fitting mechanism 6 is the press-fitting area, and the convex end of the fixed cam 406 is facing the unloading area;

[0028] After carrying the generator assembly A, the discharge chute 9 rotates to the press-fitting area through the output motor 2, and the press-fitting mechanism 6 presses the generator assembly B onto the generator assembly A. Taking the shaft body as an example, the shaft sleeve is pressed onto the shaft body, and then the discharge chute 9 carries the pressed shaft body to rotate to the unloading area. In this process, the transmission piston rod 402 rotates synchronously with the rotating material plate 3. The round head end of the transmission piston rod 402 always slides on the outer side of the fixed cam 406 under the elastic action of the force storage spring 403 and the elastic piston rod 404. When the transmission piston rod 402 gradually approaches the convex end of the fixed cam 406, the transmission piston rod 402 is forced to press into the inside of the pipe sleeve 401, so that the force storage spring 403 is compressed into the force storage state, and the stripping plate 405 is tightly attached to the outer surface of the generator assembly A. At this time, the outer side of the generator assembly A is blocked by the fixed material plate 802 inside the discharge chute 9, thereby preventing the generator assembly A from being pushed out of the discharge chute 9.

[0029] When the discharge trough 9 rotates to the unloading area, the solid material plate 802 is driven by the force-bearing paddle 804 to retract into the inner groove 7, so that the opening of the discharge trough 9 is opened. At this time, the round head end of the transmission piston rod 402 is located at the convex end of the fixed cam 406, and the force storage spring 403 stretches and resets and releases kinetic energy to make the elastic piston rod 404 carry the stripping plate 405 to extend to push the generator assembly A out of the discharge trough 9, thereby realizing automatic unloading. After the discharge trough 9 is empty, it continues to move toward the loading area. During this movement, the round head end of the transmission piston rod 402 gradually moves away from the convex end of the fixed cam 406. At this time, under the action of the spring of the elastic piston rod 404, it carries the stripping plate 405 to retract until the outer side surface of the stripping plate 405 is flush with the inner side surface of the discharge trough 9, thereby facilitating the subsequent generator assembly A to enter the discharge trough 9 from the loading area;

[0030] The round head end of the transmission piston rod 402 may be embedded with a movable ball to convert the sliding friction between the round head end of the transmission piston rod 402 and the outer side of the fixed cam 406 into rolling friction to reduce the friction force;

[0031] Based on the above description, after the press-fitting operation of the generator assembly is completed by the rotation of the rotating disc 3, the fixing plate 802 can be automatically retracted into the inner groove 7 in the unloading area to open the opening of the discharge groove 9. At the same time, the round head end of the transmission piston rod 402 is located at the convex end of the fixed cam 406, and the force storage spring 403 extends and resets and releases kinetic energy to make the elastic piston rod 404 carry the stripping plate 405 to extend to push the generator assembly A away from the discharge groove 9, thereby quickly transferring the pressed components. Only a transfer device needs to be set up in the unloading area, which reduces the labor burden and improves the unloading efficiency without the need to configure a high-precision manipulator. There is no need for the manipulator to move back and forth to shorten the unloading time and effectively saves the cost of configuring the mechanical mechanism for unloading.

[0032] like Figure 1-Figure 5As shown, an inner groove 7 is provided inside the rotating material disc 3, and a solid material assembly 8 is arranged inside the inner groove 7, the solid material assembly 8 includes an arc spring 801 and a solid material plate 802, one end of the arc spring 801 is connected to the solid material plate 802, the solid material plate 802 is elastically connected to the rotating material disc 3 through the arc spring 801, and the inner wall of the solid material plate 802 and the inner wall of the discharge groove 9 are in contact with the outer wall of the component to be pressed, the solid material assembly 8 also includes a torsion spring shaft 803 and a force-bearing paddle 804, the outer wall of the solid material plate 802 is provided with a torsion spring shaft 803, and the outer wall of the torsion spring shaft 803 is connected with the force-bearing paddle 804, the solid material assembly 8 also includes a force-applying paddle 805 in the unloading area, the outer side surface of the force-bearing paddle 804 is provided with a force-bearing paddle 804, and the outer side surface of the force-bearing paddle 804 is fixedly connected to the press-fitting base 1 through a support rod;

[0033] The specific operation is as follows: the generator assembly A is placed into the discharge groove 9 from top to bottom in the loading area. At this time, the fixing plate 802 closes the opening of the discharge groove 9 under the elastic action of the arc spring 801, and the inner side of the fixing plate 802 is fitted against the outer side of the generator assembly A, thereby cooperating with the inner side of the discharge groove 9 to stabilize the generator assembly A to prevent the generator assembly A from loosening during the rotation and press-fitting process;

[0034] When the generator assembly is pressed and rotated toward the lower material area, the force-applying paddle 805 in the lower material area contacts the end of the force-receiving paddle 804 in rotation. During the rotation of the force-receiving paddle 804, the force-applying paddle 805 in the lower material area pushes the force-receiving paddle 804 in disguised form so that it can carry the fixed material plate 802 into the inner groove 7. At this time, the arc spring 801 is compressed, and as the force-receiving paddle 804 is retracted into the inner groove 7 with the fixed material plate 802, the force-receiving paddle 804 expands outwards through the torsion spring shaft 803, and the angle formed between the force-receiving paddle 804 and the fixed material plate 802 gradually becomes smaller until the fixed material plate 802 is closed. 02 retracts until the opening of the discharge trough 9 is fully opened, and the rotation is stopped at this time. At this time, the material stripping plate 405 extends to withdraw the generator assembly to complete the unloading, and then the rotating disc 3 continues to rotate. During the rotation process, the angle formed between the force-applying paddle 804 and the solid material plate 802 further decreases until the force-applying paddle 805 and the force-applying paddle 804 in the unloading area are misaligned. At this time, the rotating disc 3 continues to rotate and the arc spring 801 inside the inner groove 7 stretches and resets to make the solid material plate 802 extend to cover the opening of the discharge trough 9 again, so as to facilitate the stabilization of the generator assembly to be loaded in the subsequent loading area;

[0035] The torsion spring shaft 803 can slide at a specific position on the surface of the solid material plate 802, and the position of the force-bearing paddle 804 can be adjusted by sliding so that after the solid material plate 802 is fully retracted, the force-bearing paddle 804 can still maintain contact with the force-applying paddle 805 in the unloading area, and after the generator assembly is unloaded, the force-bearing paddle 804 is subsequently rotated to continue to retract into the inner groove 7 to reduce the angle, thereby separating the force-bearing paddle 804 from the force-applying paddle 805 in the unloading area, so that the solid material plate 802 can be reset. After the position of the torsion spring shaft 803 is adjusted, it can be clamped and fixed to the surface of the solid material plate 802 by tightening the nuts at both ends to prevent it from sliding at will. For this purpose, the upper and lower surfaces of the solid material plate 802 and the contact surfaces with the nuts are ground to make the surfaces rough to increase friction.

[0036] In summary, when the automatic press-fitting equipment for assembling the generator is used, the output motor 2 first drives the rotating disc 3 to rotate clockwise, and the generator assembly A, such as the shaft body of the shaft sleeve to be press-fitted, is placed inside the discharge trough 9. The surface of the rotating disc 3 at the nine o'clock direction is the loading area, the surface of the rotating disc 3 directly below the press-fitting mechanism 6 is the press-fitting area, and the convex end of the fixed cam 406 faces the unloading area. The generator assembly A is placed into the discharge trough 9 from top to bottom in the loading area. At this time, the solid material plate 802 closes the opening of the discharge trough 9 under the elastic action of the arc spring 801, and at the same time, the inner side of the solid material plate 802 is fitted against the outer side of the generator assembly A, thereby cooperating with the inner side of the discharge trough 9 to stabilize the generator assembly A to prevent the generator assembly A from loosening during the rotation and press-fitting process;

[0037] After carrying the generator assembly A, the discharge chute 9 rotates to the press-fitting area through the output motor 2, and the press-fitting mechanism 6 presses the generator assembly B onto the generator assembly A. Taking the shaft body as an example, the shaft sleeve is pressed onto the shaft body, and then the discharge chute 9 carries the pressed shaft body to rotate to the unloading area. In this process, the transmission piston rod 402 rotates synchronously with the rotating material plate 3. The round head end of the transmission piston rod 402 always slides on the outer side of the fixed cam 406 under the elastic action of the force storage spring 403 and the elastic piston rod 404. When the transmission piston rod 402 gradually approaches the convex end of the fixed cam 406, the transmission piston rod 402 is forced to press into the inside of the pipe sleeve 401, so that the force storage spring 403 is compressed into the force storage state, and the stripping plate 405 is tightly attached to the outer surface of the generator assembly A. At this time, the outer side of the generator assembly A is blocked by the fixed material plate 802 inside the discharge chute 9, thereby preventing the generator assembly A from being pushed out of the discharge chute 9.

[0038] When the generator assembly is pressed and rotated toward the lower material area, the force-applying paddle 805 in the lower material area contacts the end of the rotating force-receiving paddle 804. During the rotation of the force-receiving paddle 804, the force-applying paddle 805 in the lower material area pushes the force-receiving paddle 804 in disguised form so that it can retract into the inner groove 7 with the solid material plate 802. At this time, the arc spring 801 is compressed, and as the force-receiving paddle 804 retracts into the inner groove 7 with the solid material plate 802, the force-receiving paddle 804 expands outward through the torsion spring shaft 803, and the angle formed between it and the solid material plate 802 gradually becomes smaller, until the solid material plate 802 retracts to the opening of the discharge groove 9 and is fully opened. At this time, the rotation is stopped and the opening of the discharge groove 9 is open. Open, at this time, the round head end of the transmission piston rod 402 is located at the convex end of the fixed cam 406, and the storage spring 403 stretches and resets and releases kinetic energy to make the elastic piston rod 404 carry the stripping plate 405 to extend to push the generator assembly A out of the discharge trough 9, thereby realizing automatic unloading, and after the discharge trough 9 is empty, it continues to move toward the loading area. During this movement, the round head end of the transmission piston rod 402 gradually moves away from the convex end of the fixed cam 406. At this time, under the action of the spring of the elastic piston rod 404, it carries the stripping plate 405 to retract until the outer side surface of the stripping plate 405 is flush with the inner side surface of the discharge trough 9, thereby facilitating the subsequent generator assembly A to enter the discharge trough 9 from the loading area;

[0039] After unloading is completed, the rotating disc 3 continues to rotate. During the rotation process, the angle formed between the force-applying paddle 804 and the solid material plate 802 becomes smaller until the force-applying paddle 805 in the unloading area is misaligned with the force-applying paddle 804. At this time, the rotating disc 3 continues to rotate while the arc spring 801 inside the inner groove 7 stretches and resets, allowing the solid material plate 802 to extend out and re-cover the opening of the discharge groove 9, so as to facilitate the stabilization of the generator assembly that is subsequently loaded in the loading area.

[0040] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An automatic press-fitting device for assembling a generator, comprising a press-fitting base (1) and a transmission type blanking assembly (4), characterized in that: An output motor (2) is fixed at the bottom of the press-fit base (1), and a rotating disc (3) is connected to the top output end of the output motor (2). A discharge trough (9) is provided on the surface of the rotating disc (3). The transmission type unloading assembly (4) is arranged inside the rotating disc (3). The transmission type unloading assembly (4) comprises a sleeve (401), a transmission piston rod (402), a force storage spring (403), an elastic piston rod (404), a stripping plate (405), a fixed cam (406) and a support rod (407). The sleeve (401) is close to the output motor. (2) A transmission piston rod (402) is inserted into one end of the output end, and an elastic piston rod (404) is inserted into one end of the sleeve (401) away from the transmission piston rod (402). A force storage spring (403) is arranged between the elastic piston rod (404) and the transmission piston rod (402) in the sleeve (401), and a stripping plate (405) is fixed to the end of the elastic piston rod (404). The outer wall of the output motor (2) is rotatably connected to a fixed cam (406), and a support rod (407) is fixed to the bottom of the fixed cam (406).

2. The automatic press-fitting equipment for generator assembly according to claim 1, characterized in that: The pipe sleeve (401) is fixedly connected to the inner wall of the rotating disc (3) via a bracket, and the transmission piston rod (402) is elastically connected to the elastic piston rod (404) via a force storage spring (403) inside the pipe sleeve (401).

3. The automatic press-fitting equipment for generator assembly according to claim 1, characterized in that: The outer side surface of the stripping plate (405) is flush with the inner side surface of the material discharge trough (9), and the stripping plate (405) is elastically connected to the pipe sleeve (401) via an elastic piston rod (404).

4. The automatic press-fitting equipment for generator assembly according to claim 1, characterized in that: The outer side surface of the fixed cam (406) fits the round head end of the transmission piston rod (402), and the fixed cam (406) is fixedly connected to the press-fit base (1) via a support rod (407).

5. The automatic press-fitting equipment for generator assembly according to claim 1, characterized in that: A support frame (5) is provided on the surface of the press-fitting base (1) at one side of the rotating disc (3), and a press-fitting mechanism (6) is fixed on the top of the support frame (5).

6. The automatic press-fitting equipment for generator assembly according to claim 1, characterized in that: An inner groove (7) is provided inside the rotating material disc (3), and a solid material assembly (8) is arranged inside the inner groove (7).

7. The automatic press-fitting equipment for generator assembly according to claim 6, characterized in that: The material fixing assembly (8) comprises an arc-shaped spring (801) and a material fixing plate (802), and one end of the arc-shaped spring (801) is connected to the material fixing plate (802).

8. The automatic press-fitting equipment for generator assembly according to claim 7, characterized in that: The material fixing plate (802) is elastically connected to the rotating disc (3) via an arc spring (801), and the inner wall of the material fixing plate (802) and the inner wall of the material discharge groove (9) are in contact with the outer wall of the component to be pressed.

9. The automatic press-fitting equipment for generator assembly according to claim 7, characterized in that: The solid material assembly (8) further comprises a torsion spring shaft (803) and a force-bearing paddle (804); the outer wall of the solid material plate (802) is provided with the torsion spring shaft (803), and the outer wall of the torsion spring shaft (803) is connected with the force-bearing paddle (804).

10. The automatic press-fitting equipment for generator assembly according to claim 9, characterized in that: The solid material assembly (8) further comprises a force-applying paddle (805) in the material discharge area, and a force-applying paddle (804) is arranged on the outer side surface of the force-applying paddle (804), and the outer side surface of the force-applying paddle (804) is fixedly connected to the press-fitting base (1) via a support rod.

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