Circuit breaker operating mechanism main pull spring assembly device and assembly method thereof

Abstract

The application belongs to the technical field of circuit breaker assembly, and discloses a circuit breaker operating mechanism main tension spring assembly device and an assembly method thereof. The circuit breaker operating mechanism main tension spring assembly device comprises a feeding mechanism, a positioning mechanism, a stretching mechanism and a clamping and hooking mechanism. The feeding mechanism comprises a material channel and a pushing assembly. The operating mechanism is placed on the material channel. The pushing assembly can push the operating mechanism to slide and can limit the rotation of the main tension spring. The limiting piece of the positioning mechanism can be inserted into the structure main body to position the structure main body and can limit the swing of the main tension spring. The stretching rod of the stretching mechanism can extend into the hook of the second end of the main tension spring and can perform primary stretching on the hook. The clamping jaw assembly of the clamping and hooking mechanism can clamp the hook that passes through the connecting hole and can perform secondary stretching on the main tension spring. The clamping jaw assembly can move to stagger the hook and the connecting hole. The clamping jaw assembly releases the hook, so that the hook is hooked on the structure main body. The device can automatically assemble the main tension spring of the circuit breaker.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker assembly, in particular to a circuit breaker operating mechanism main spring assembly device and an assembly method thereof. BACKGROUND

[0002] The existing circuit breaker generally comprises a base, an upper cover, an operating mechanism contained in the base, a conductive system, a magnetic tripping assembly, a thermal tripping assembly and an arc extinguishing mechanism. Among them, the operating mechanism mainly comprises a bracket, a rocker arm, a trip buckle, a trip buckle spring (i.e. a main spring), a lock buckle, a lock buckle spring, a re-buckle, a re-buckle spring, an upper connecting rod and a lower connecting rod. One end of the main spring is hung on the connecting shaft of the upper connecting rod and the lower connecting rod, and the other end is hung on the connecting hole on the rocker arm. The lower connecting rod in the operating mechanism is connected with the rotating shaft in the conductive system through a pin, and is fixed in the base, forming a four-bar linkage mechanism when the circuit breaker is closed.

[0003] The main spring is a key part of the circuit breaker operating mechanism, and is a decisive factor of the final pressure of the circuit breaker contact parameter, which affects the mechanical life of the circuit breaker. At present, the assembly of the main spring is mainly through manual assembly. Taking a 250A circuit breaker as an example, its operating mechanism has two main springs, and the single main spring has a pulling force of up to 155N, and the two main springs have a pulling force of up to 310N. In addition, the diameter of the connecting hole on the rocker arm is only 4.6mm, so the assembly requires certain skills, the assembly difficulty is large, the technical requirements for workers are high, and the assembly efficiency is also low.

[0004] Therefore, there is an urgent need for a circuit breaker operating mechanism main spring assembly device and an assembly method thereof to solve the above problems. SUMMARY

[0005] An object of the present application is to provide a circuit breaker operating mechanism main spring assembly device, which can automatically assemble the circuit breaker operating mechanism main spring, reduce the dependence on manual work, and greatly improve the assembly efficiency.

[0006] To achieve this object, the present application adopts the following technical solutions:

[0007] The circuit breaker operating mechanism main spring assembly device, the operating mechanism of the circuit breaker comprises a structure main body and a main spring, the first end of the main spring is hung on the structure main body, the structure main body is provided with a connecting hole corresponding to the second end of the main spring, the circuit breaker operating mechanism main spring assembly device is used for hanging the second end of the main spring on the structure main body through the connecting hole, and the circuit breaker operating mechanism main spring assembly device comprises:

[0008] The feeding mechanism comprises a material channel and a pushing assembly, the operating mechanism is placed on the material channel, the pushing assembly can push the operating mechanism to slide to a preset position in the material channel, and can limit the rotation of the main spring;

[0009] A positioning mechanism, comprising a limiting member, which is capable of being inserted into the structural body to position the structural body and capable of limiting the swing of the main tension spring;

[0010] A stretching mechanism, comprising a stretching rod, which is capable of being inserted into the hook of the second end of the main tension spring and stretching the hook in the first stage to make the hook pass through the connecting hole;

[0011] A clamping hooking mechanism, comprising a clamping jaw assembly, which is capable of clamping the hook passing out of the connecting hole and stretching the main tension spring in the second stage, and the clamping jaw assembly is capable of moving to make the hook stagger with the connecting hole, the clamping jaw assembly releases the hook to make the hook hook on the structural body.

[0012] As an option, the feeding mechanism further comprises:

[0013] Two channel blocks, which are arranged in parallel and interval to form the channel, and the inner side of the channel block is provided with a boss, and the operating mechanism is supported on the bosses on both sides;

[0014] At least one limiting block, which is arranged at the end of the channel block and extends to the channel, and the operating mechanism is positioned by sliding against the limiting block.

[0015] As an option, the pushing assembly comprises:

[0016] A first driving member, which is arranged on one side of the channel block;

[0017] A pushing member and a first connecting member, the pushing member is arranged between the two channel blocks, and the pushing member is connected to the output end of the first driving member through the first connecting member, and the first driving member is capable of driving the pushing member to slide along the channel to make the pushing member push the operating mechanism against the limiting block;

[0018] A limiting profiling member, which is elastically connected to the pushing member, and the limiting profiling member comprises a profiling fork and a top block, the profiling fork is capable of being inserted into both sides of the hook of the first end of the main tension spring to limit the rotation of the main tension spring, and the top block is capable of being topped on the second end of the main tension spring to make the main tension spring keep vertical state.

[0019] As an option, the positioning mechanism further comprises:

[0020] A mounting bracket;

[0021] A second driving member, the fixed end of the second driving member is arranged on the mounting bracket;

[0022] The first guide rail is provided with the limiting member at one end, and the other end of the first guide rail is connected to the output end of the second driving member through the second connecting member, and the second driving member can drive the first guide rail and the limiting member to move up and down;

[0023] A guide block is arranged on the mounting bracket, and a sliding groove is arranged on the guide block, and the first guide rail slides along the sliding groove.

[0024] As an option, the stretching mechanism further comprises:

[0025] A fixed block is provided with a stretching rod mounting groove, and the stretching rod passes through the stretching rod mounting groove and is rotationally connected to the fixed block through a first rotating shaft;

[0026] A third driving member is connected to the end of the stretching rod away from the material channel, and the third driving member can drive the stretching rod to rotate around the first rotating shaft, so that the stretching rod presses the hook of the second end of the main tension spring to stretch the main tension spring.

[0027] As an option, the circuit breaker operating mechanism main tension spring assembly further comprises a workbench, the fixed block is arranged on the workbench and can slide relative to the workbench, and the stretching mechanism further comprises:

[0028] A spring limiting block is arranged on the workbench and located between the fixed block and the third driving member;

[0029] A first elastic member is arranged between the spring limiting block and the fixed block, and the first elastic member can provide a pushing force to the fixed block.

[0030] As an option, the clamping and hooking mechanism further comprises a movement driving assembly for driving the clamping jaw assembly to move so that the hook of the second end is staggered with the connecting hole, and the movement driving assembly comprises:

[0031] A fourth driving member;

[0032] A sliding block and a sliding rail, the sliding rail extends along the movement direction of the clamping jaw assembly, the sliding block is connected to the output end of the fourth driving member, and the clamping jaw assembly is connected to the sliding block, and the fourth driving member can drive the sliding block to slide along the sliding rail.

[0033] As an option, the clamping jaw assembly comprises:

[0034] The mounting plate is rotatably connected to the sliding block through a second rotating shaft, and the clamping jaw is arranged at one end of the mounting plate and used for clamping the main tension spring.

[0035] The fifth driving member and a connecting rod, one end of the connecting rod is elastically and movably connected to the output end of the fifth driving member, the other end of the connecting rod is connected to the other end of the mounting plate, and the fifth driving member can drive the one end of the connecting rod to move up and down to drive the mounting plate to rotate.

[0036] As an optional solution, the clamping jaw comprises:

[0037] The fixed plate is arranged on the mounting plate in the vertical direction, and the two movable plates are rotatably arranged on the mounting plate and located on the two sides of the fixed plate respectively, and the movable plates can rotate to make the clamping ends thereof approach or move away from the fixed plate.

[0038] The second elastic member is connected to one end of the movable plate away from the clamping end, and the second elastic member can exert a pulling force on the movable plate to make the clamping end of the movable plate move away from the fixed plate.

[0039] The movable plate driving member is configured to drive the movable plate to rotate to make the clamping end of the movable plate approach the fixed plate.

[0040] As an optional solution, the movable plate driving member comprises:

[0041] The sixth driving member has a fixed end arranged on the mounting plate.

[0042] The taper plate is connected to the output end of the sixth driving member, the taper plate is arranged between the two movable plates, the width of the movable plate gradually decreases from one end connected to the sixth driving member to the other end, and the sixth driving member can drive the taper plate to move and adjust the position of the taper plate extending between the two movable plates to drive the movable plate to rotate.

[0043] Another object of the present application is to provide a circuit breaker operating mechanism main tension spring assembling method, which uses the circuit breaker operating mechanism main tension spring assembling device to automatically assemble the circuit breaker operating mechanism main tension spring.

[0044] To achieve the above object, the present application uses the following technical solutions.

[0045] The circuit breaker operating mechanism main tension spring assembling method based on the circuit breaker operating mechanism main tension spring assembling device comprises the following steps.

[0046] Put the operation mechanism to be assembled on the material channel, push the operation mechanism to the preset position by the pushing assembly to position, and limit the rotation of the main tension spring;

[0047] Insert the limiting piece of the positioning mechanism into the structure body to limit the swing of the main tension spring;

[0048] Insert the stretching rod into the hook at the second end of the main tension spring to perform primary stretching on the main tension spring, and make the hook pass through the connecting hole on the structure body;

[0049] Start the clamping jaw assembly to clamp the hook passing out of the connecting hole to perform secondary stretching on the main tension spring, move the clamping jaw assembly to make the hook staggered with the connecting hole, release the clamping jaw assembly to release the hook, and make the hook hung on the structure body.

[0050] Beneficial effects:

[0051] The circuit breaker operation mechanism main tension spring assembling device provided by the application can perform the following steps when assembling the main tension spring: first, put the operation mechanism to be assembled on the material channel, push the operation mechanism to the preset position by the pushing assembly to position, and limit the rotation of the main tension spring; then, insert the limiting piece of the positioning mechanism into the structure body to limit the swing of the main tension spring; then, insert the stretching rod into the hook at the second end of the main tension spring to perform primary stretching on the main tension spring, and make the hook pass through the connecting hole on the structure body; then, start the clamping jaw assembly to clamp the hook passing out of the connecting hole to perform secondary stretching on the main tension spring, move the clamping jaw assembly to make the hook staggered with the connecting hole, release the clamping jaw assembly to release the hook, and make the hook hung on the structure body, thereby completing the automatic assembly of the main tension spring. In the assembling process, no manual intervention is needed, the dependence on manual work is reduced, and the assembling efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is a structure schematic diagram of the operation mechanism in one perspective provided by the embodiment of the application;

[0053] Figure 2 is a structure schematic diagram of the operation mechanism in another perspective provided by the embodiment of the application;

[0054] Figure 3 is a whole structure schematic diagram of the circuit breaker operation mechanism main tension spring assembling device provided by the embodiment of the application;

[0055] Figure 4 is a structure schematic diagram of the circuit breaker operation mechanism main tension spring assembling device provided by the embodiment of the application, in which part of the workbench is removed;

[0056] Figure 5is a structural schematic view of the feeding mechanism from another perspective provided by the embodiment of the present application;

[0057] Figure 6 is a structural schematic view of the feeding mechanism from another perspective provided by the embodiment of the present application;

[0058] Figure 7 is a structural schematic view of the positioning mechanism from another perspective provided by the embodiment of the present application;

[0059] Figure 8 is a structural schematic view of the positioning mechanism from another perspective provided by the embodiment of the present application;

[0060] Figure 9 is a structural schematic view of the stretching mechanism provided by the embodiment of the present application;

[0061] Figure 10 is a partial structural schematic view of the clamping and hooking mechanism provided by the embodiment of the present application Figure 1 ;

[0062] Figure 11 is a partial structural schematic view of the clamping and hooking mechanism provided by the embodiment of the present application Figure 2 ;

[0063] Figure 12 is Figure 10 an enlarged structural schematic view of A in the figure.

[0064] in the figure:

[0065] 100, operating mechanism; 110, support; 120, rocker arm; 1201, connecting hole; 1202, avoiding hole; 130, jump buckle; 140, upper connecting rod; 150, lower connecting rod; 160, traction rod; 170, lock buckle; 180, re-buckle; 190, main tension spring; 1901, first end; 1902, second end; 101, connecting shaft;

[0066] 1, feeding mechanism; 11, material channel; 12, pushing assembly; 121, first driving piece; 122, pushing piece; 123, first connecting piece; 124, limiting profiling piece; 1241, profiling fork; 1242, top block; 125, floating joint; 126, shaft shoulder screw; 127, first compression spring; 128, second guide rail; 13, material channel block; 131, boss; 14, limiting block;

[0067] 2, positioning mechanism; 21, limiting piece; 22, mounting support; 23, second driving piece; 24, first guide rail; 25, second connecting piece; 26, guide block;

[0068] 3, stretching mechanism; 31, stretching rod; 32, fixed block; 33, first rotating shaft; 34, third driving member; 35, spring limiting block; 36, first elastic member;

[0069] 4, clamping and hooking mechanism; 41, clamping jaw assembly; 411, mounting plate; 412, clamping jaw; 4121, fixed plate; 4122, movable plate; 4123, second elastic member; 4124, sixth driving member; 4125, taper plate; 413, fifth driving member; 4131, through hole; 4132, second compression spring; 414, connecting rod; 415, second rotating shaft; 416, equal-height column; 42, moving driving assembly; 421, fourth driving member; 422, sliding block; 423, sliding rail;

[0070] 5, workbench. DETAILED DESCRIPTION

[0071] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the application are shown in the drawings, rather than all the parts.

[0072] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0073] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or it can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and oblique upward of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the vertical and oblique downward of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0074] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

[0075] As shown in Figure 1 and Figure 2 The operating mechanism 100 of a circuit breaker includes a structural body and a main tension spring 190, the first end 1901 of the main tension spring 190 is hung on the structural body, and the second end 1902 of the main tension spring 190 is provided with a connecting hole 1201 on the structural body. Specifically, the structural body includes a bracket 110, a rocker arm 120 and a jump buckle 130 pivoted on the bracket 110, an upper connecting rod 140 pivoted with the jump buckle 130, a lower connecting rod 150 rotatably connected with the upper connecting rod 140, a traction rod 160 connected to the bracket 110, a lock buckle 170 and a re-buckle 180. Among them, the connecting shaft 101 is arranged between the upper connecting rod 140 and the lower connecting rod 150, the first end 1901 of the main tension spring 190 is hung on the connecting shaft 101, and the main tension spring 190 is generally provided with two and hung side by side on the connecting shaft 101. The bottom side of the rocker arm 120 is provided with a connecting hole 1201 corresponding to the second end 1902 of the main tension spring 190, which passes through the connecting hole 1201 and is hung on the rocker arm 120. The operating mechanism 100 of the circuit breaker is a common structure in the prior art, and the connection relationship between the parts and the action principle will not be described in detail here.

[0076] Optionally, as shown in Figure 2 , the rocker arm 120 is further provided with an avoiding hole 1202 near the connecting hole 1201, and the avoiding hole 1202 and the connecting hole 1201 form a hanging rod. After the hook passes out of the connecting hole 1201, the hook end extends into the avoiding hole 1202 to be hung on the hanging rod, so as to ensure that the hook is hung more firmly and is not easy to be unhooked.

[0077] As shown in Figure 3 and Figure 4As shown, the embodiment provides a circuit breaker operating mechanism main tension spring assembly device for hanging the second end 1902 of the main tension spring 190 on the rocker arm 120 through the connecting hole 1201. Before the device is used for assembly, the components of the operating mechanism 100 are assembled into a semi-finished product, and the first end 1901 of the main tension spring 190 is hung on the connecting shaft 101. Specifically, the circuit breaker operating mechanism main tension spring assembly device includes a workbench 5, a feeding mechanism 1, a positioning mechanism 2, a stretching mechanism 3, and a clamping and hanging mechanism 4. The feeding mechanism 1, the positioning mechanism 2, the stretching mechanism 3, and the clamping and hanging mechanism 4 are arranged on the workbench 5. The feeding mechanism 1 includes a feeding channel 11 and a pushing assembly 12. The operating mechanism 100 is placed on the feeding channel 11, the pushing assembly 12 can push the operating mechanism 100 to slide to a preset position in the feeding channel 11, and can limit the rotation of the main tension spring 190. The positioning mechanism 2 includes a limiting piece 21, which can be inserted into the structure body to position the structure body, and can limit the swing of the main tension spring 190. The stretching mechanism 3 includes a stretching rod 31, which can extend into the hook of the second end 1902 of the main tension spring 190, and can stretch the hook in the first stage to make the hook pass through the connecting hole 1201. The clamping and hanging mechanism 4 includes a clamping jaw assembly 41, which can clamp the hook passing through the connecting hole 1201, and can stretch the main tension spring 190 in the second stage. The clamping jaw assembly 41 can move to stagger the hook and the connecting hole 1201, release the hook, and make the hook hang on the structure body.

[0078] When the main tension spring 190 is assembled, the operating mechanism 100 to be assembled is placed on the feeding channel 11, the operating mechanism 100 is pushed to a preset position by the pushing assembly 12 for positioning, and the rotation of the main tension spring 190 is limited. Then the limiting piece 21 of the positioning mechanism 2 is inserted into the structure body to limit the swing of the main tension spring 190. Then the stretching rod 31 extends into the hook of the second end 1902 of the main tension spring 190, and stretches the main tension spring 190 in the first stage to make the hook of the second end 1902 pass through the connecting hole 1201 on the structure body. Then the clamping jaw assembly 41 is started to clamp the hook passing through the connecting hole 1201, and the main tension spring 190 is stretched in the second stage. The clamping jaw assembly 41 is moved to stagger the hook and the connecting hole 1201, and the clamping jaw assembly 41 is released to release the hook, so that the hook is hung on the structure body, that is, the automatic assembly of the main tension spring 190 is completed. In this assembly process, no manual intervention is required, the dependence on manual work is reduced, and the assembly efficiency is greatly improved.

[0079] The structure and working principle of each mechanism of the circuit breaker operating mechanism main tension spring assembly device will be described in detail below with reference to the drawings.

[0080] As shown in Figure 5 and Figure 6 , it is a structure schematic diagram of the feeding mechanism 1.

[0081] The feeding mechanism 1 further comprises two channel blocks 13 and at least one limiting block 14. The channel blocks 13 are arranged on the workbench 5, and the two channel blocks 13 are arranged in parallel and at intervals to form the channel 11. The inner side of the channel block 13 is provided with a boss 131, and the operating mechanism 100 is supported on the bosses 131 on both sides. The limiting block 14 is arranged at the end of the channel block 13 and extends to the channel 11. The operating mechanism 100 is positioned by sliding against the limiting block 14. In the embodiment, the limiting block 14 is arranged at the right end of the two channel blocks 13, and a certain gap is maintained between the two limiting blocks 14, so that the limiting member 21 of the positioning mechanism 2 can pass between the two limiting blocks 14 to contact the main tension spring 190.

[0082] Optionally, the pushing assembly 12 comprises a first driving member 121, a pushing member 122, a first connecting member 123 and a limiting profiling member 124. The first driving member 121 is arranged on one side of the channel block 13, and preferably adopts a linear cylinder. The pushing member 122 is arranged between the two channel blocks 13. The pushing member 122 is connected to the output end of the first driving member 121 through the first connecting member 123. The first driving member 121 can drive the pushing member 122 to slide along the channel 11, so that the pushing member 122 pushes the operating mechanism 100 against the limiting block 14. The bottom side of the pushing member 122 is preferably supported on the boss 131 of the channel block 13, which is beneficial to the stable movement of the pushing member 122. The limiting profiling member 124 is elastically connected to the pushing member 122. The limiting profiling member 124 comprises a profiling fork 1241 and a top block 1242. The profiling fork 1241 can be inserted on both sides of the hook of the first end 1901 of the main tension spring 190 to limit the rotation of the main tension spring 190. The top block 1242 can be abutted on the second end 1902 of the main tension spring 190 to keep the main tension spring 190 in a vertical state.

[0083] Preferably, the output end of the first driving member 121 and the first connecting member 123 are connected through a floating joint 125 to play a buffering role, which is beneficial to prevent the pushing member 122 from excessively extruding the rocker arm 120 and causing damage.

[0084] Optionally, the pushing member 122 is arranged as an L-shaped plate. The limiting profiling member 124 is connected to the pushing member 122 through a shaft shoulder screw 126. The outer side of the shaft shoulder screw 126 is sleeved with a first compression spring 127. The limiting profiling member 124 can slide along the shaft shoulder screw 126 to abut against the first compression spring 127, so as to realize the elastic connection of the limiting profiling member 124 and the pushing member 122, and make the profiling fork 1241 and the top block 1242 have a certain buffering property when abutting against the main tension spring 190.

[0085] Further, in order to make the pushing piece 122 move more smoothly, the feeding mechanism 1 further comprises a second guide rail 128, a mounting groove is arranged on the workbench 5 at a position between the two material channel blocks 13, the second guide rail 128 is arranged in the mounting groove, and the pushing piece 122 slides along the second guide rail 128, so that the smoothness of movement is maintained.

[0086] As shown in Figure 7 and Figure 8 , it is a structural schematic view of the positioning mechanism 2.

[0087] The positioning mechanism 2 further comprises a mounting bracket 22, a second driving piece 23, a first guide rail 24, a second connecting piece 25 and a guide block 26. The mounting bracket 22 is vertically arranged on the workbench 5, the fixed end of the second driving piece 23 is arranged on the right side of the mounting bracket 22, and the second driving piece 23 is preferably a linear cylinder. The lower end of the first guide rail 24 is provided with the limiting piece 21, and the upper end of the first guide rail 24 is connected to the output end of the second driving piece 23 through the second connecting piece 25, so that the second driving piece 23 can drive the first guide rail 24 and the limiting piece 21 to move up and down. The guide block 26 is arranged on the left side of the mounting bracket 22, and a sliding groove is arranged on the guide block 26, and the first guide rail 24 slides along the sliding groove. The second driving piece 23 drives the first guide rail 24 and the limiting piece 21 to move up and down, so that the limiting piece 21 is inserted between the upper connecting rod 140 and the lower connecting rod 150, the upper connecting rod 140 and the lower connecting rod 150 cannot rotate, and the limiting piece 21 abuts against the right side of the main tension spring 190. In cooperation with the feeding mechanism 1, the operation mechanism 100 is completely positioned, which is beneficial to the subsequent stretching and hanging of the main tension spring 190.

[0088] As shown in Figure 9 , it is a structural schematic view of the stretching mechanism 3.

[0089] The stretching mechanism 3 further comprises a fixing block 32 and a third driving piece 34. The fixing block 32 is arranged on the workbench 5, and a stretching rod mounting groove is arranged on the fixing block 32. The stretching rod 31 passes through the stretching rod mounting groove and is rotationally connected to the fixing block 32 through a first rotation shaft 33. The fixed end of the third driving piece 34 is arranged on the bottom side of the workbench 5, and the output end of the third driving piece 34 is connected to one end of the stretching rod 31 away from the material channel 11. The third driving piece 34 can drive the stretching rod 31 to rotate around the first rotation shaft 33, so that the left end of the stretching rod 31 can move up and down to abut against the hook of the second end 1902 of the main tension spring 190, thereby realizing the stretching of the main tension spring 190. The third driving piece 34 is preferably a linear cylinder.

[0090] The third driving member 34 drives the right end of the stretching rod 31 to move up and down, and the up-down position of the fixed block 32 is fixed. When the right end of the stretching rod 31 moves up, the fixed block 32 should move right to ensure that the stretching rod 31 does not interfere with the output end of the third driving member 34. Therefore, the fixed block 32 is arranged to slide left and right relative to the workbench 5. In order to make the sliding of the fixed block 32 along the workbench 5 more smooth, the stretching mechanism 3 further comprises a spring limiting block 35 and a first elastic member 36. The spring limiting block 35 is arranged on the workbench 5, and the first elastic member 36 is arranged between the spring limiting block 35 and the fixed block 32. The first elastic member 36 provides a pushing force to the fixed block 32, so that the fixed block 32 moves left more smoothly under the driving force of the third driving member 34.

[0091] As shown in Figures 10-12 , it is a structural schematic view of the clamping and hanging mechanism 4.

[0092] As shown in Figure 10 , the clamping and hanging mechanism 4 further comprises a moving driving assembly 42 arranged at the bottom side of the workbench 5, which is used to drive the clamping jaw assembly 41 to move left and right so that the hook of the second end 1902 is staggered with the connecting hole 1201. Specifically, the moving driving assembly 42 comprises a fourth driving member 421, a sliding block 422 and a sliding rail 423. The fixed end of the fourth driving member 421 is arranged at the bottom side of the workbench 5, the sliding rail 423 extends along the moving direction of the clamping jaw assembly 41, i.e. left and right, the sliding block 422 is connected to the output end of the fourth driving member 421, and the clamping jaw assembly 41 is connected to the sliding block 422. The fourth driving member 421 can drive the sliding block 422 to slide along the sliding rail 423, thereby driving the clamping jaw assembly 41 to move left and right. In the embodiment, the moving driving assembly 42 is provided with two groups, which are respectively located at the front and rear sides of the clamping jaw assembly 41. The two groups of moving driving assemblies 42 jointly push the clamping jaw assembly 41 to move left and right, so that the clamping jaw assembly 41 is evenly stressed, which is beneficial to ensure the stability of the movement of the clamping jaw assembly 41. The fourth driving member 421 preferably adopts a linear cylinder.

[0093] Optionally, as shown in Figure 10 and Figure 11As shown, the clamping jaw assembly 41 comprises a mounting plate 411, a clamping jaw 412, a fifth driving member 413 and a connecting rod 414. The mounting plate 411 is rotatably connected to the sliding block 422 through a second rotating shaft 415. The clamping jaw 412 is arranged at the right end of the mounting plate 411 and used for clamping the main tension spring 190. The mounting plate 411 is rotatable to drive the clamping jaw 412 to move close to or away from the connecting hole 1201. The left end of the connecting rod 414 is elastically and movably connected to the output end of the fifth driving member 413. The right end of the connecting rod 414 is connected to the left end of the mounting plate 411. The fifth driving member 413 can drive the left end of the connecting rod 414 to move up and down to drive the mounting plate 411 to rotate, so as to drive the clamping jaw 412 to move up and down. The clamping jaw 412 moves up to clamp the hook and then moves down to perform secondary stretching on the main tension spring 190.

[0094] Specifically, as shown in Figure 12 the clamping jaw 412 comprises a fixed plate 4121, two movable plates 4122, a second elastic member 4123 and a movable plate 4122 driving member. The fixed plate 4121 is arranged in the vertical direction on the mounting plate 411. The two movable plates 4122 are rotatably arranged on the mounting plate 411 and respectively located at the two sides of the fixed plate 4121. The movable plates 4122 are rotatable to make the clamping ends thereof move close to or away from the fixed plate 4121. The two ends of the second elastic member 4123 are respectively connected to one end of the movable plates 4122 away from the clamping end. The second elastic member 4123 can exert a pulling force on the movable plates 4122 to make the clamping ends of the movable plates 4122 move away from the fixed plate 4121, so as to release the hook. The movable plate 4122 driving member is used for driving the movable plates 4122 to rotate to make the clamping ends of the movable plates 4122 move close to the fixed plate 4121, so as to clamp the hook. The second elastic member 4123 preferably adopts a tension spring.

[0095] Preferably, as shown in Figure 12 the movable plate 4122 driving member comprises a sixth driving member 4124 and a tapered plate 4125. The fixed end of the sixth driving member 4124 is arranged on the mounting plate 411. The tapered plate 4125 is connected to the output end of the sixth driving member 4124. The tapered plate 4125 is arranged between the two movable plates 4122. The width of the movable plates 4122 gradually decreases from one end connected to the sixth driving member 4124 to the other end. The sixth driving member 4124 can drive the tapered plate 4125 to move, adjust the position of the tapered plate 4125 extending into the two movable plates 4122, drive the movable plates 4122 to rotate, and thus adjust the distance between the clamping ends of the movable plates 4122 and the fixed plate 4121.

[0096] Further, as shown in Figure 11As shown, the fixed end of the fifth driving member 413 is arranged on the upper side of the workbench 5, connected to the workbench 5 through a plurality of equal-height columns 416, and the output end of the fifth driving member 413 penetrates the workbench 5 and is connected to the connecting rod 414 on the bottom side of the workbench 5. The lower end of the output end of the fifth driving member 413 is provided with a penetrating hole 4131, and the connecting rod 414 is slidingly connected in the penetrating hole 4131. A second compression spring 4132 is also arranged in the penetrating hole 4131 and vertically arranged on the upper side of the connecting rod 414 to exert a downward elastic force on the connecting rod 414.

[0097] The embodiment also provides an assembly method of the main tension spring of the circuit breaker operating mechanism, based on the assembly device of the main tension spring of the circuit breaker operating mechanism, comprising the following steps:

[0098] S1: placing the operating mechanism 100 to be assembled on the material channel 11, and pushing the operating mechanism 100 to a preset position for positioning by the pushing assembly 12 to limit the rotation of the main tension spring 190;

[0099] S2: inserting the limiting piece 21 into the structure main body to limit the swing of the main tension spring 190;

[0100] S3: extending the stretching rod 31 into the hook of the second end 1902 of the main tension spring 190 to perform primary stretching on the main tension spring 190, so that the hook penetrates through the connecting hole 1201 on the structure main body;

[0101] S4: starting the jaw assembly 41 to clamp the hook penetrating out of the connecting hole 1201 to perform secondary stretching on the main tension spring 190, moving the jaw assembly 41 to stagger the hook and the connecting hole 1201, releasing the jaw assembly 41 to release the hook, and hanging the hook on the structure main body.

[0102] Specifically, in step S1, after placing the operating mechanism 100 on the material channel 11, starting the first driving member 121 to drive the limiting profile to move rightward and push the operating mechanism 100 to slide rightward until the operating mechanism 100 abuts against the limiting block 14. At this time, the profiled fork 1241 abuts against the hook on both sides of the first end 1901 of the main tension spring 190, so that the main tension spring 190 cannot rotate at will, and the top block 1242 abuts against the second end 1902 of the main tension spring 190 to keep the main tension spring 190 in a vertical state.

[0103] In step S2, starting the second driving member 23 to drive the limiting piece 21 to move downward and insert between the upper connecting rod 140 and the lower connecting rod 150 to prevent the upper connecting rod 140 and the lower connecting rod 150 from rotating, and the limiting piece 21 abuts against the right side of the main tension spring 190 to cooperate with the top block 1242 to limit the main tension spring 190 from swinging at will.

[0104] In step S3, after the main tension spring 190 is positioned in step S2, the left end of the stretching rod 31 is inserted into the hook of the second end 1902, the third driving member 34 is started to drive the right end of the stretching rod 31 to move upward, and the left end of the stretching rod 31 moves downward to perform the first stretching on the hook of the second end 1902, so that the hook passes through the connecting hole 1201 on the structure body.

[0105] In step S4, the fifth driving member 413 is started to drive the left end of the connecting rod 414 to move downward, and the right end of the mounting plate 411 is driven to move upward, so that the clamping end of the clamping jaw 412 is attached to the bottom side of the rocker arm 120, then the fourth driving member 421 is started to drive the clamping jaw 412 to move left and right to clamp the hook of the second end 1902; after the hook is clamped, the fifth driving member 413 is started again to drive the clamping end of the clamping jaw 412 to move downward to stretch the tension spring 190 again, so that the hook is completely avoided from the rocker arm 120; the fourth driving member 421 is started again to drive the clamping jaw 412 to move right with the hook, so that the end of the hook is aligned with the avoiding hole 1202; the sixth driving member 4124 is started to drive the tapered plate 4125 to move left, and the two movable plates 4122 are close to each other at the lower end and far away from the fixed plate 4121 at the upper end under the pulling force of the second elastic member 4123, so that the hook is loosened, and the hook is bounced upward and hung on the rocker arm 120.

[0106] After one main tension spring 190 is assembled, the main tension spring 190 is taken out, the mechanisms are reset, the next operation mechanism 100 to be assembled is put in again, and the above steps are repeated to continue the assembly of the main tension spring 190.

[0107] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A main pull spring assembly device for a circuit breaker operating mechanism, the circuit breaker operating mechanism (100) comprising a structural body and a main pull spring (190), a first end (1901) of the main pull spring (190) being hung on the structural body, a connecting hole (1201) being provided on the structural body corresponding to a second end (1902) of the main pull spring (190), the main pull spring assembly device being used for hanging the second end (1902) of the main pull spring (190) on the structural body through the connecting hole (1201), characterized in that, The circuit breaker operating mechanism main tension spring assembly device comprises: The feeding mechanism (1) comprises a channel (11) and a pushing assembly (12), the operating mechanism (100) is placed on the channel (11), and the pushing assembly (12) can push the operating mechanism (100) to slide to a preset position in the channel (11) and can limit the rotation of the main tension spring (190); The positioning mechanism (2) comprises a limiting piece (21), the limiting piece (21) can be inserted into the structural body to position the structural body and can limit the swing of the main tension spring (190); The stretching mechanism (3) comprises a stretching rod (31), the stretching rod (31) can be inserted into the hook of the second end (1902) of the main tension spring (190) and can perform primary stretching on the hook to make the hook pass through the connecting hole (1201); The clamping and hooking mechanism (4) comprises a clamping jaw assembly (41), the clamping jaw assembly (41) can clamp the hook passing through the connecting hole (1201) and perform secondary stretching on the main tension spring (190), the clamping jaw assembly (41) can be moved to make the hook staggered with the connecting hole (1201), the clamping jaw assembly (41) releases the hook, and the hook is hooked on the structural body.

2. The circuit breaker operating mechanism main tension spring assembly of claim 1, wherein, The feeding mechanism (1) further comprises: Two channel blocks (13) are arranged in parallel and at intervals to form the channel (11), the inner side of the channel block (13) is provided with a boss (131), and the operating mechanism (100) is supported on the bosses (131) on both sides; At least one limiting block (14) is arranged at the end of the channel block (13) and extends to the channel (11), and the operating mechanism (100) is positioned by sliding against the limiting block (14).

3. The circuit breaker operating mechanism main tension spring assembly of claim 2 wherein, The pushing assembly (12) comprises: A first driving piece (121) is arranged on one side of the channel block (13); A pushing piece (122) and a first connecting piece (123), the pushing piece (122) is arranged between the two channel blocks (13), the pushing piece (122) is connected to the output end of the first driving piece (121) through the first connecting piece (123), the first driving piece (121) can drive the pushing piece (122) to slide along the channel (11), so that the pushing piece (122) pushes the operating mechanism (100) against the limiting block (14); A limiting profiling piece (124) is elastically connected to the pushing piece (122), the limiting profiling piece (124) comprises a profiling fork (1241) and a top block (1242), the profiling fork (1241) can be inserted into the hook on both sides of the first end (1901) of the main tension spring (190) to limit the rotation of the main tension spring (190), and the top block (1242) can be abutted against the second end (1902) of the main tension spring (190) to make the main tension spring (190) keep vertical.

4. The circuit breaker operating mechanism main drag spring assembly of claim 1, wherein, The positioning mechanism (2) further comprises: a mounting bracket (22); a second driving member (23), a fixed end of the second driving member (23) is arranged on the mounting bracket (22); a first guide rail (24) and a second connecting member (25), one end of the first guide rail (24) is provided with the limiting member (21), the other end of the first guide rail (24) is connected to an output end of the second driving member (23) through the second connecting member (25), and the second driving member (23) can drive the first guide rail (24) and the limiting member (21) to move up and down; a guide block (26) arranged on the mounting bracket (22), the guide block (26) is provided with a sliding groove, and the first guide rail (24) slides along the sliding groove.

5. The circuit breaker operating mechanism main tension spring assembly of claim 1, wherein, The stretching mechanism (3) further comprises: a fixed block (32), the fixed block (32) is provided with a stretching rod mounting groove, the stretching rod (31) passes through the stretching rod mounting groove and is rotationally connected to the fixed block (32) through a first rotating shaft (33); a third driving member (34), an output end of the third driving member (34) is connected to one end of the stretching rod (31) away from the material channel (11), and the third driving member (34) can drive the stretching rod (31) to rotate around the first rotating shaft (33), so that the stretching rod (31) presses the hook of the second end (1902) of the main tension spring (190) to stretch the main tension spring (190).

6. The circuit breaker operating mechanism main pull spring assembly of claim 5 wherein, The main tension spring assembly of the circuit breaker operating mechanism further comprises a workbench (5), the fixed block (32) is arranged on the workbench (5) and can slide relative to the workbench (5), and the stretching mechanism (3) further comprises: a spring limiting block (35) arranged on the workbench (5) and located between the fixed block (32) and the third driving member (34); a first elastic member (36) arranged between the spring limiting block (35) and the fixed block (32), the first elastic member (36) can provide a pushing force to the fixed block (32).

7. The circuit breaker operating mechanism main tension spring assembly of any of claims 1-6, wherein, The clamping and hooking mechanism (4) further comprises a movement driving assembly (42) for driving the clamping jaw assembly (41) to move so that the hook of the second end (1902) is staggered with the connecting hole (1201), and the movement driving assembly (42) comprises: a fourth driving member (421); a sliding block (422) and a sliding rail (423), the sliding rail (423) extends along the movement direction of the clamping jaw assembly (41), the sliding block (422) is connected to an output end of the fourth driving member (421), the clamping jaw assembly (41) is connected with the sliding block (422), and the fourth driving member (421) can drive the sliding block (422) to slide along the sliding rail (423).

8. The circuit breaker operating mechanism main tension spring assembly of claim 7 wherein, The clamping jaw assembly (41) comprises: An installation plate (411) is rotatably connected to the sliding block (422) through a second rotating shaft (415), and a clamping jaw (412) is arranged at one end of the installation plate (411) and used for clamping the main tension spring (190), and the installation plate (411) can drive the clamping jaw (412) to approach or move away from the connecting hole (1201) through rotation. A fifth driving member (413) and a connecting rod (414) are arranged, one end of the connecting rod (414) is elastically and movably connected to the output end of the fifth driving member (413), the other end of the connecting rod (414) is connected to the other end of the installation plate (411), and the fifth driving member (413) can drive the one end of the connecting rod (414) to move up and down to drive the installation plate (411) to rotate.

9. The circuit breaker operating mechanism main draw spring assembly of claim 8 wherein, The clamping jaw (412) comprises: A fixed plate (4121) is arranged on the installation plate (411) in the vertical direction, and two movable plates (4122) are rotatably arranged on the installation plate (411) and located on the two sides of the fixed plate (4121) respectively, and the movable plates (4122) can make their clamping ends approach or move away from the fixed plate (4121) through rotation. A second elastic member (4123) is arranged, and two ends of the second elastic member (4123) are connected to one end of the movable plate (4122) away from the clamping end respectively, and the second elastic member (4123) can exert a pulling force on the movable plate (4122) to make the clamping end of the movable plate (4122) move away from the fixed plate (4121). A movable plate driving member is arranged and configured to drive the movable plate (4122) to rotate to make the clamping end of the movable plate (4122) approach the fixed plate (4121).

10. The circuit breaker operating mechanism main draw spring assembly of claim 9, wherein, The movable plate driving member comprises: A sixth driving member (4124) is arranged, and a fixed end of the sixth driving member (4124) is arranged on the installation plate (411); A taper plate (4125) is connected to the output end of the sixth driving member (4124), the taper plate (4125) is arranged between the two movable plates (4122), the width of the movable plate (4122) gradually decreases from one end connected to the sixth driving member (4124) to the other end, and the sixth driving member (4124) can drive the taper plate (4125) to move, adjust the position of the taper plate (4125) extending into the two movable plates (4122), and drive the movable plates (4122) to rotate.

11. A method of assembling a main pull spring for a circuit breaker operating mechanism, characterized by, The main tension spring assembly device based on the circuit breaker operating mechanism as claimed in any one of claims 1-10 comprises: The operating mechanism (100) to be assembled is placed on the channel (11), and the operating mechanism (100) is pushed to a preset position by the pushing assembly (12) to be positioned and limited to rotate the main tension spring (190); The limiting piece (21) is inserted into the structure body to limit the swing of the main tension spring (190); The stretching rod (31) is stretched into the hook of the second end (1902) of the main tension spring (190), the main tension spring (190) is stretched in the first stage, and the hook of the second end (1902) passes through the connecting hole (1201) on the structure body; The hook passing out of the connecting hole (1201) is clamped by the jaw assembly (41), the main tension spring (190) is stretched in the second stage, the jaw assembly (41) is moved to dislocate the hook from the connecting hole (1201), the jaw assembly (41) is released to release the hook, and the hook is hung on the structure body.

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