Automatic assembling and tightening device for circuit breaker

Abstract

The invention relates to the technical field of circuit breaker automatic assembly, in particular to an automatic assembly tightening device for a circuit breaker, which comprises a lifting assembly, a rotating assembly and a locking assembly, the lifting assembly comprises a lifting seat and a lifting power source for driving the lifting seat to do lifting motion, and the rotating assembly comprises a rotating driving mechanism and a rotating piece. The rotating piece is connected with the driving end of the rotating driving mechanism, the rotating driving mechanism is fixed to the lifting base, the output end of the rotating driving mechanism is connected with the rotating piece through a floating shaft, and the rotating piece is matched with the air cylinder. The locking assembly is arranged on the rotating piece and comprises a locking driving mechanism and a locking piece, and the locking driving mechanism drives the locking piece to be inserted into or withdrawn from the pin hole of the air cylinder. According to the automatic tightening device for assembling the cylindrical parts of the circuit breaker, the auxiliary holes in the circumferential direction serve as counter-force points to fix and lock the parts, and meanwhile the parts on one side are driven through rotation to automatically tighten the two parts.

Description

Technical Field

[0001] The invention relates to the technical field of automatic assembly of circuit breakers, in particular to an automatic assembly and tightening device for circuit breakers. Background Art

[0002] During the assembly and production process of the circuit breaker, it is necessary to fasten the static contact in the circuit breaker to the static side support conductor by thread, and it is necessary to fasten the pressure cylinder in the circuit breaker to the dynamic side support conductor by thread. Process holes are provided on both the static contact and the pressure cylinder. During assembly, the clamping shaft on the tightening tool is inserted into the process hole. The operator holds the tightening tool and rotates the static contact (pressure cylinder) to tighten its corresponding thread onto the static side support conductor (dynamic side support conductor). In the related art, the above-mentioned manual operation method is generally used for tightening operations, which results in the inability to realize automated assembly at the assembly operation station on the automated assembly production line of the circuit breaker, affecting the assembly efficiency of the overall automated assembly production line.

[0003] The current manual tightening thread tightening solution for circuit breakers: using a tightening tool, workers install the tightening tool on the parts to be tightened, and then connect the handheld torque wrench to the tightening tool for tightening. This has the following disadvantages: 1) Workers are prone to bumping into the surface of parts when installing tightening tools, which may cause discharge during testing.

[0004] 2) The tightening torque required by the process is very large. Workers need to first fix the non-rotating parts on a workbench that bears the reaction force, and then tighten them. After tightening, they still need to be disassembled, and the cycle is slow.

[0005] 3) The tightening torque required by the process is very large, and manual tightening can easily lead to unqualified tightening torque. Summary of the invention

[0006] In view of the problem that tightening tooling in the prior art has low tightening efficiency and poor quality, the present invention provides an automatic assembly tightening device for a circuit breaker.

[0007] The present invention is achieved through the following technical solutions: An automatic assembly tightening device for a circuit breaker comprises a lifting assembly, a rotating assembly and a locking assembly. The lifting assembly comprises a lifting seat and a lifting power source for driving the lifting seat to perform lifting movement. The rotating assembly comprises a rotating drive mechanism and a rotating member. The rotating member is connected to the driving end of the rotating drive mechanism. The rotating drive structure is fixed to the lifting seat. The output end of the rotating drive mechanism is connected to the rotating member through a floating shaft. The rotating member cooperates with a pressure cylinder. The locking assembly is arranged on the rotating member. The locking assembly comprises a locking drive mechanism and a locking member. The locking drive mechanism drives the locking member to insert or withdraw from the pin hole of the pressure cylinder.

[0008] Preferably, the lifting seat includes an upper support plate, a lower support plate and an elastic member, the upper surface of the upper support plate is connected to the driving end of the lifting power source; the upper support plate and the lower support plate are arranged in parallel with each other, and the elastic member is arranged between the upper support plate and the lower support plate in a compressed state, the upper end of the elastic member abuts against the lower surface of the upper support plate, and the lower end abuts against the upper surface of the lower support plate.

[0009] Preferably, a limiting column is provided on the upper surface of the lower support plate, and the length of the limiting column is smaller than the length of the elastic member when not in use.

[0010] Preferably, it also includes a limiting mechanism, which includes a limiting rod and a limiting sleeve, one end of the limiting rod is connected to the lower surface of the upper support plate, and the other end passes through the lower support plate and cooperates with the limiting sleeve; the elastic member is sleeved on the limiting rod.

[0011] Preferably, the shell of the rotary drive mechanism is fixed to the upper surface of the upper support plate, the driving end of the rotary drive mechanism is fixedly connected to the floating shaft, and the floating shaft passes through the upper support plate, the lower support plate and the top of the rotating part; the rotating part has a hollow structure, and when in use, the air cylinder is placed in the hollow receiving groove of the rotating part.

[0012] Preferably, the floating shaft includes an upper shaft body and a lower shaft body, the upper shaft body passes through the upper support plate and is fixedly connected to the output end of the rotating drive mechanism, one end of the lower shaft body passes through the lower support plate and is connected to the upper shaft body, and the other end is fixedly connected to the rotating member.

[0013] Preferably, the upper shaft body and the rotary drive mechanism are connected by a spline-matching pin; the upper shaft body and the lower shaft body are connected by a spline.

[0014] Preferably, the locking drive mechanism is an air pump, the locking member is a pin shaft, the housing of the air pump is fixedly connected to the outer wall of the rotating member, the output end of the air pump is connected to the pin shaft, and a through hole is provided on the locking member. When locked, the pin shaft passes through the through hole through the rotating member and is connected to the pin hole of the air pressure cylinder.

[0015] Preferably, a detection sensor is also provided on the rotating member, the detection sensor is linked to the rotation drive mechanism, the probe of the detection sensor faces the central axis of the rotating member, and the length axis of the detection sensor is parallel to the length axis of the locking member.

[0016] Preferably, a controller is further included, the output end of the detection sensor is connected to the input end of the controller, and the driving ends of the lifting power source, the rotating driving mechanism, and the locking driving mechanism are all connected to the output end of the controller.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses an automatic assembly tightening device for a circuit breaker. The locking assembly uses the process holes of the components themselves to fix the components that need to be tightened, and then the rotating assembly is used to automatically tighten two components that have been selected. By integrating the lifting assembly, the rotating assembly and the locking assembly into one device, an automated tightening process is realized. The locking assembly can automatically align and lock with the force-bearing structure, thereby improving the tightening accuracy. The device is an automated tightening device that integrates the lifting assembly, the rotating assembly and the locking assembly. The device is used to tighten the static contact (pressure cylinder) thread onto the static side support conductor (dynamic side support conductor), and can be applied to target components of different shapes and sizes, including but not limited to the static contact components and pressure cylinder components in the circuit breaker.

[0018] The locking component is driven to move by the lifting component and the rotating component. The locking component can be lifted and moved alone, can be rotated alone, or can be lifted and moved and rotated at the same time. The locking component finds the force-bearing structure and aligns it with the force-bearing structure by performing the locking action. The locking drive mechanism drives the locking component to move after the locking component is aligned with the force-bearing structure, so that the locking component is locked with the force-bearing structure. Then, the static contact (pressure cylinder) can be driven by the rotating component to lift and rotate at the same time, and then the static contact (pressure cylinder) can be screwed onto the static side support conductor (dynamic side support conductor). The automated tightening and assembly of the static contact (pressure cylinder) and the static side support conductor (dynamic side support conductor) is realized. Experimental tests show that the use of the tightening device of the present invention for automated tightening and assembly is more efficient than manual operation, thereby improving production efficiency.

[0019] Furthermore, the lifting seat includes a support plate, a limiting mechanism and an elastic member, which, combined with the limiting rod, provide stable support and precise limiting.

[0020] Furthermore, the floating shaft includes an upper shaft body and a lower shaft body, which are connected by a spline to allow relative sliding along the axial direction, thereby improving the adaptability and flexibility of the device.

[0021] Furthermore, the detection sensor is used to detect the position information of the force-bearing structure, thereby improving the accuracy of alignment.

[0022] Furthermore, the force-bearing structure is a pin hole, and the locking member is a pin shaft, which can move under the drive of the locking drive mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an automatic assembly and tightening device for a circuit breaker of the present invention; Figure 2 It is a cross-sectional view of an automatic assembly and tightening device for a circuit breaker of the present invention; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 It is a side view of an automatic assembly and tightening device for a circuit breaker of the present invention; Figure 5 It is a schematic diagram of the structure of an automatic assembly tightening device for a circuit breaker of the present invention, which is locked and pressed down by a locking piece and a pressure cylinder; Figure 6 It is a side view of an automatic assembly and tightening device for a circuit breaker of the present invention when in use; Figure 7 It is a cross-sectional view of an automatic assembly and tightening device for a circuit breaker of the present invention when in use; Figure 8 yes Figure 7 A magnified schematic diagram of part B; Fig. 9 It is an exploded view of a rotary drive mechanism and a floating shaft in an automatic assembly and tightening device for a circuit breaker of the present invention; Fig.10 The invention discloses a structural schematic diagram of a locking drive mechanism and a pneumatic slip ring in an automatic assembly and tightening device for a circuit breaker.

[0024] In the figure, 1, lifting seat; 10, upper support plate; 11, lower support plate; 110, connecting column; 12, limiting mechanism; 120, limiting plate; 121, guide column; 122, limiting block; 13, elastic member; 14, limiting column; 15, mounting plate; 2, rotating drive mechanism; 20, driving shaft; 21, floating shaft; 210, upper shaft body; 211, lower shaft body; 3, rotating member; 30, accommodating groove; 31, opening; 4, locking drive mechanism; 40, air inlet and outlet holes; 41, mounting seat; 5, locking member; 6, detection sensor; 7, pneumatic slip ring; 70, fixed section; 700, fixed end air pipe; 71, rotating section; 710, rotating end air pipe; 72, pressure reducing valve mechanism; 73, valve port; 8, air cylinder; 80, pin hole. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0026] The present invention discloses an automatic assembly and tightening device for a circuit breaker, referring to Figure 1 , 2, 3, including a descending component, a rotating component, a locking component and a controller. The lifting component includes a lifting seat 1 and a lifting power source for driving the lifting seat 1 to perform lifting movement. The lifting power source can be a cylinder, a hydraulic cylinder, etc. The lifting seat 1 includes an upper support plate 10, a lower support plate 11, an elastic member 13, a limiting column 14 and a limiting mechanism 12. The upper surface of the upper support plate 10 is connected to the driving end of the lifting power source; the upper support plate 10 and the lower support plate 11 are arranged in parallel with each other at intervals, and the elastic member 13 is arranged between the upper support plate 10 and the lower support plate 11 in a compressed state. The upper end of the elastic member 13 abuts against the lower surface of the upper support plate 10, and the lower end abuts against the upper surface of the lower support plate 11. The upper surface of the lower support plate 11 is provided with a limiting column 14, and the length of the limiting column 14 is less than the length of the elastic member 13 when it is not in use. The limiting mechanism 12 includes a limiting rod and a limiting sleeve. One end of the limiting rod is connected to the lower surface of the upper support plate 10, and the other end passes through the lower support plate 11 and cooperates with the limiting sleeve. The elastic member 13 is sleeved on the limiting rod. In this embodiment, the elastic member 13 adopts a compression spring.

[0027] Reference Figure 4 , 6 The elastic member 13 causes the upper support plate 10 and the lower support plate 11 to have a tendency to move away from each other and exerts pressure on both of them. The limiting mechanism 12 is used to limit the spacing between the upper support plate 10 and the lower support plate 11 to no more than a preset spacing H. Under the action of the elastic member 13, the upper support plate 10 and the lower support plate 11 have a tendency to move away from each other, but under the action of the limiting mechanism 12, the upper support plate 10 and the lower support plate 11 cannot continue to move away from each other after moving away from each other to the preset spacing H.

[0028] The rotating assembly includes a rotating drive mechanism 2 and a rotating member 3. The rotating member 3 is connected to the driving end of the rotating drive mechanism 2. The rotating drive structure is fixed on the lifting seat 1. The output end of the rotating drive mechanism 2 is connected to the rotating member 3 through a floating shaft 21. The rotating member 3 cooperates with the air cylinder 8. The housing of the rotating drive mechanism 2 is fixed to the upper surface of the upper support plate 10. The driving end of the rotating drive mechanism 2 is fixedly connected to the floating shaft 21. The floating shaft 21 penetrates the upper support plate 10 and the lower support plate 11 and is connected to the top of the rotating member 3. The rotating member 3 is a hollow structure. When in use, the air cylinder 8 is placed in the hollow receiving groove 30 of the rotating member 3. When the tightening device is applied, the rotating member 3 can be sleeved on the outside of the static contact (air cylinder 8) through the receiving groove 30. The rotating member 3 is designed as a hollow shell structure, and its outer surface is also large enough to facilitate the installation of the locking assembly on the rotating member 3. The rotating member 3 may also be designed as a bracket structure, as long as the locking member 5 arranged on the rotating member 3 can be aligned with and locked with the force-bearing structure on the static contact (pressure cylinder 8).

[0029] Among them, since the upper support plate 10 and the lower support plate 11 are designed to be relatively movable, the rotary drive mechanism 2 arranged on the upper support plate 10 will move downward relative to the rotating member 3, so the transmission connection structure between the two can not only realize the axial torque transmission, but also meet the need for relative movement between the two in the vertical direction. Figure 5 , 9 The output shaft of the rotary drive mechanism 2 is connected to the rotating member 3 through a floating shaft 21. The floating shaft 21 includes an upper shaft body 210 and a lower shaft body 211. The upper shaft body 210 is fixedly connected to the output shaft of the rotary drive mechanism 2, and the lower shaft body 211 is fixedly connected to the rotating member 3. The upper shaft body 210 and the lower shaft body 211 are spline-connected so that the two can slide relative to each other in the axial direction. The upper shaft body 210 is spline-connected to the output shaft of the rotary drive mechanism 2 to achieve circumferential limit, and a pin is used to penetrate the two to achieve axial limit. The upper end of the lower shaft body 211 is spline-connected to the lower end of the upper shaft body 210, and the lower end of the lower shaft body 211 is fixedly connected to the rotating member 3.

[0030] Reference Figure 1 , 3 The locking assembly is arranged on the rotating member 3, and the locking assembly is arranged on the rotating member 3 and can follow the movement of the rotating member 3. The locking member 5 can be aligned with the force-bearing structure in the process of following the movement of the rotating member 3. The locking drive mechanism 4 can drive the locking member 5 to move and lock with the force-bearing structure after the locking member 5 is aligned with the force-bearing structure, so that the rotating member 3 can drive the static contact (pressure cylinder 8) to move. The locking assembly includes a locking drive mechanism 4 and a locking member 5. The locking drive mechanism 4 drives the locking member 5 to insert or withdraw from the pin hole 80 of the pressure cylinder 8. When the rotating member 3 performs lifting and rotating movements, the locking member 5 follows the rotating member 3 to perform lifting and rotating movements. The locking drive mechanism 4 is an air pump, and the locking member 5 is a pin shaft. The housing of the air pump is fixedly connected to the outer wall of the rotating member 3, and the output end of the air pump is connected to the pin shaft. A through hole is opened on the locking member 5. The locking member 5 is aligned with the force-bearing structure during the movement of the rotating member 3. When locked, the pin shaft passes through the rotating member 3 through the through hole and is connected to the pin hole 80 of the air pressure cylinder 8. The locking member 5 extends into the pin hole 80, which means that the locking member 5 is locked with the force-bearing structure, so that the air pressure cylinder 8 can move under the drive of the rotating member 3.

[0031] In this embodiment, the air pump is a bidirectional air pump. Fig.10, that is, the air pump has two air inlet and outlet holes 40. When one of the air inlet and outlet holes 40 is filled with air and pressurized, the output shaft of the air pump extends out and drives the locking member 5 to extend into the pin hole 80; when the other air inlet and outlet hole 40 is filled with air and pressurized, the output shaft of the air pump retracts and exits the pin hole 80. Since the air inlet and outlet holes 40 of the air pump need to be connected to the air pipe, and at the same time the air pump needs to rotate, lift and move with the rotating member 3, the tightening device also includes a fixed end air pipe 700, a rotating end air pipe 710 and a pneumatic slip ring 7 arranged between the lower support plate 11 and the rotating member 3. The pneumatic slip ring 7 is arranged around the outside of the floating shaft 21, and the pneumatic slip ring 7 includes a fixed section 70 fixedly arranged relative to the lower support plate 11 and a rotating section 71 fixedly arranged relative to the rotating member 3. The fixed end air pipe 700 is connected to the fixed section 70 , and the rotating end air pipe 710 is connected to the rotating section 71 . The fixed end air pipe 700 and the rotating end air pipe 710 are connected through the pneumatic slip ring 7 , and the rotating end air pipe 710 is connected to the air inlet and outlet holes 40 of the air pump.

[0032] Reference Figure 1 , 10 The pneumatic slip ring 7 is a commonly used component in the mechanical field, which can maintain continuous transmission of gas during rotation. The pneumatic slip ring 7 includes a fixed section 70 and a rotating section 71. A connecting column 110 is fixedly arranged below the lower support plate 11. A mounting plate 15 is fixedly arranged below the connecting column 110. The mounting plate 15 is provided with a through hole. The fixed section 70 of the pneumatic slip ring 7 passes through the mounting plate 15 through the through hole and is fixedly connected to the mounting plate 15. The fixed section 70 of the pneumatic slip ring 7 is fixedly installed on the lower support plate 11 through the mounting plate 15 and the connecting column 110. The rotating section 71 of the pneumatic slip ring 7 is tightly fitted and fixed to the lower end of the lower shaft body 211. A connecting groove is formed at the upper end of the rotating member 3. The rotating section 71 of the pneumatic slip ring 7 is partially inserted into the connecting groove and the two are tightly fitted and connected. In this way, when the rotary drive mechanism 2 is working, the rotating member 3 and the rotating section 71 of the pneumatic slip ring 7 can be driven to rotate synchronously, thereby completing automatic tightening.

[0033] The rotating member 3 is also provided with a detection sensor 6, which is linked to the rotation drive mechanism 2, and the probe of the detection sensor 6 faces the central axis of the rotating member 3, and the length axis of the detection sensor 6 is parallel to the length axis of the locking member 5. In this embodiment, the detection sensor 6 is a laser sensor. The detection sensor 6 can be replaced by an infrared sensor, a camera, etc., and the pin hole 8080 or the protrusion and other structures are detected by the infrared sensor and the camera.

[0034] The output end of the detection sensor 6 is connected to the input end of the controller, and the driving ends of the lifting power source, the rotating drive mechanism 2, and the locking drive mechanism 4 are all connected to the output end of the controller. The lifting power source, the rotating drive mechanism 2, the locking drive mechanism 4 and the detection sensor 6 are connected to the controller. The controller can receive the detection signal from the detection sensor 6, and at the same time process the received detection signal, and issue the corresponding execution command to the lifting power source, the rotating drive mechanism 2, and the locking drive mechanism 4. The modular design allows the various components of the tightening device to work together, which is easy to maintain and upgrade. The controller enables the automated tightening assembly to provide a more accurate tightening torque, thereby reducing assembly quality problems and improving product reliability and assembly quality.

[0035] Reference Figure 6 , 7 , 8. During the assembly operation, the air cylinder 88 is positioned at a predetermined position, whereby the horizontal position information of the pin hole 80 provided on the side of the air cylinder 8 is easy to determine. The rotating member 3 can drive the detection sensor 6 to move in the vertical direction to the same plane as the pin hole 80 through the lifting action, and then drive the detection sensor 6 to rotate through the rotation action. The laser sensor serving as the detection sensor 6 will be aligned with the pin hole 80 as the force-bearing structure during the rotation process. When the two are aligned, the length of time the laser sensor receives the reflected laser will change, thereby determining the position of the pin hole 80. Thereafter, the locking member 5 is driven by the rotating member 3 to move to align with the pin hole 80.

[0036] After the locking member 5 is inserted into the pin hole 80 on the pressure cylinder 8 to achieve locking, the rotating member 3 is abutted against the pressure cylinder 8 through the locking member 5 in the vertical direction, and then the power source is controlled by the controller to drive the upper support plate 10 to move downward. In this process, since the pressure cylinder 8 has a limiting effect on the rotating member 3 in the vertical direction, and the rotating member 3 has a limiting effect on the lower support plate 11 in the vertical direction, the lower support plate 11 cannot move downward in the vertical direction. As a result, the upper support plate 10 can overcome the elastic force of the compression spring and move closer to the lower support plate 11, causing the compression spring to produce a greater deformation. When the rotating member 3 drives the pressure cylinder 8 to rotate through the rotation action, since the pressure cylinder 8 will be screwed relative to the moving side support conductor thread as the static side support conductor (moving side support conductor), the pressure cylinder 8 will not only rotate, but also move downward. In this process, through the elastic force of the compression spring, the rotating member 33 and the lower support plate 11 will move downward with the pressure cylinder 8.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and substitutions, and these modifications and substitutions are also within the scope of protection covered by the claims.

Claims

1. An automatic assembly and tightening device for a circuit breaker, characterized in that: The invention comprises a lifting assembly, a rotating assembly and a locking assembly. The lifting assembly comprises a lifting seat (1) and a lifting power source for driving the lifting seat (1) to perform lifting movement. The rotating assembly comprises a rotating drive mechanism (2) and a rotating member (3). The rotating member (3) is connected to the driving end of the rotating drive mechanism (2). The rotating drive structure is fixed on the lifting seat (1). The output end of the rotating drive mechanism (2) is connected to the rotating member (3) via a floating shaft (21). The locking assembly is arranged on the rotating member (3). The locking assembly comprises a locking drive mechanism (4) and a locking member (5). The locking drive mechanism (4) drives the locking member (5) to be inserted into or withdrawn from a pin hole (80) of a pressure cylinder (8).

2. The automatic assembly and tightening device for circuit breaker according to claim 1, characterized in that: The lifting seat (1) comprises an upper support plate (10), a lower support plate (11) and an elastic member (13); the upper surface of the upper support plate (10) is connected to the driving end of a lifting power source; the upper support plate (10) and the lower support plate (11) are arranged in parallel with each other at intervals; the elastic member (13) is arranged between the upper support plate (10) and the lower support plate (11) in a compressed state; the upper end of the elastic member (13) abuts against the lower surface of the upper support plate (10), and the lower end abuts against the upper surface of the lower support plate (11).

3. The automatic assembly and tightening device for circuit breaker according to claim 2, characterized in that: A limiting column (14) is provided on the upper surface of the lower support plate (11), and the length of the limiting column (14) is smaller than the length of the elastic member (13) when not in use.

4. The automatic assembly and tightening device for circuit breaker according to claim 3, characterized in that: It also includes a limiting mechanism (12), which includes a limiting rod and a limiting sleeve, one end of the limiting rod is connected to the lower surface of the upper support plate (10), and the other end passes through the lower support plate (11) and cooperates with the limiting sleeve; the elastic member (13) is sleeved on the limiting rod.

5. The automatic assembly and tightening device for circuit breaker according to claim 2, characterized in that: The housing of the rotary drive mechanism (2) is fixed to the upper surface of the upper support plate (10), the driving end of the rotary drive mechanism (2) is fixedly connected to the floating shaft (21), and the floating shaft (21) passes through the upper support plate (10), the lower support plate (11) and is connected to the top of the rotary member (3); the rotary member (3) is a hollow structure, and when in use, the air cylinder (8) is placed in the hollow receiving groove (30) of the rotary member (3).

6. The automatic assembly and tightening device for circuit breaker according to claim 5, characterized in that: The floating shaft (21) comprises an upper shaft body (210) and a lower shaft body (211); the upper shaft body (210) passes through the upper support plate (10) and is fixedly connected to the output end of the rotary drive mechanism (2); one end of the lower shaft body (211) passes through the lower support plate (11) and is connected to the upper shaft body (210), and the other end is fixedly connected to the rotating member (3).

7. The automatic assembly and tightening device for circuit breaker according to claim 6, characterized in that: The upper shaft body (210) and the rotary drive mechanism (2) are connected by a spline-matching latch; and the upper shaft body (210) and the lower shaft body (211) are connected by a spline.

8. The automatic assembly and tightening device for circuit breaker according to claim 5, characterized in that: The locking drive mechanism (4) is an air pump, the locking member (5) is a pin shaft, the housing of the air pump is fixedly connected to the outer wall of the rotating member (3), the output end of the air pump is connected to the pin shaft, a through hole is provided on the locking member (5), and when locked, the pin shaft passes through the rotating member (3) through the through hole and is connected to the pin hole (80) of the air pressure cylinder (8).

9. The automatic assembly and tightening device for circuit breaker according to claim 8, characterized in that: A detection sensor (6) is also provided on the rotating member (3). The detection sensor (6) is linked to the rotation drive mechanism (2). The probe of the detection sensor (6) faces the central axis of the rotating member (3). The length axis of the detection sensor (6) is parallel to the length axis of the locking member (5).

10. The automatic assembly and tightening device for circuit breaker according to claim 9, characterized in that: It also includes a controller, wherein the output end of the detection sensor (6) is connected to the input end of the controller, and the driving ends of the lifting power source, the rotating driving mechanism (2) and the locking driving mechanism (4) are all connected to the output end of the controller.

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