CN115744121A - Circuit breaker dragging mechanism - Google Patents

Abstract

The invention provides a circuit breaker dragging mechanism, which belongs to the technical field of power equipment and comprises a sliding plate, a linear driving assembly, a sliding connecting plate, a switching operation assembly and two groups of gripper assemblies, wherein the linear driving assembly is assembled on the sliding plate; the sliding connection plate is connected to the linear driving assembly through a nut. The switching operation assembly comprises a screwing motor, a sleeve assembly, a push rod, a guide rail, a first sliding block and a follow-up connecting plate, the guide rail is fixed on the sliding connecting plate, the screwing motor is fixed on the first sliding block, and the sleeve assembly is assembled on a main shaft of the screwing motor; the push rod is fixed on the sliding connection plate and located on one side of the screwing motor, a moving block is arranged at the front end of the push rod, and the follow-up connection plate is connected with the moving block and the first sliding block. The linear driving assembly drives the sliding connection plate to move forwards, the gripper of the gripper assembly grips the circuit breaker and moves backwards to pull the circuit breaker out of the power distribution cabinet, so that the manual labor intensity is greatly reduced, the labor burden of operators is reduced, and the working efficiency is improved.

Description

Circuit breaker dragging mechanism

Technical Field

The invention belongs to the technical field of power equipment, and particularly relates to a circuit breaker dragging mechanism.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time.

The handcart type circuit breaker is large in size and weight, and the traditional replacement mode of manual push-pull movement is high in labor intensity, time-consuming and labor-consuming.

Disclosure of Invention

The embodiment of the invention provides a circuit breaker dragging mechanism, aiming at reducing the labor intensity of workers during circuit breaker replacement and improving the working efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a circuit breaker pulling mechanism comprising: the linear gripper comprises a sliding plate, a linear driving assembly, a sliding connecting plate, a switching operation assembly and two groups of gripper assemblies, wherein the linear driving assembly is assembled on the sliding plate; the sliding connection plate is connected to the linear driving assembly through a nut; the switching operation assembly is arranged on the sliding connection plate and comprises a screwing motor, a sleeve assembly, a push rod, a guide rail, a first sliding block and a follow-up connection plate, the guide rail is fixed on the sliding connection plate, the first sliding block is in sliding fit with the guide rail, the screwing motor is fixed on the first sliding block, and the sleeve assembly is assembled on a main shaft of the screwing motor; the push rod is fixed on the sliding connecting plate and is positioned on one side of the screwing motor, the center line of the push rod is parallel to the moving direction of the first sliding block, a moving block is arranged at the front end of the push rod, and the follow-up connecting plate is connected with the moving block and the first sliding block;

the two groups of gripper assemblies are arranged on the sliding connection plate and symmetrically arranged on the left side and the right side of the switching operation assembly; the linear driving assembly drives the sliding connection plate to move forwards, so that the gripper of the gripper assembly grips the circuit breaker and moves backwards to pull the circuit breaker out of the power distribution cabinet.

In a possible implementation manner, the gripper assembly comprises the gripper, a rotating shaft and a grabbing cylinder, the gripper is assembled on the rotating shaft, two ends of the rotating shaft are assembled on the sliding connecting plate through bearing seats, a cylinder body of the grabbing cylinder is hinged on the sliding connecting plate, and a telescopic rod of the grabbing cylinder is hinged on a crank arm assembled on the rotating shaft; the telescopic rod of the grabbing cylinder extends forwards to drive the rotating shaft to drive the tongs to overturn downwards to grab the circuit breaker.

In a possible implementation manner, the gripper assembly further comprises an adjusting cylinder and a third sliding block which is assembled on the rotating shaft in a sliding manner, the gripper is fixed on the third sliding block, a cylinder body of the adjusting cylinder is fixed on the gripper, and a telescopic rod of the adjusting cylinder is connected with the crank arm; the rotating shaft is provided with an anti-rotation structure capable of preventing the third sliding block from rotating.

In a possible implementation manner, the telescopic rod of the adjusting cylinder is connected with the crank arm through a floating joint.

In a possible implementation manner, the rotation-preventing structure is a rotation-preventing plane disposed on the rotating shaft.

In a possible implementation manner, the crank arm includes a shaft sleeve assembled on the rotating shaft, and an outer support arm and an inner support arm radially connected to the shaft sleeve, the outer support arm and the inner support arm are axially arranged in a staggered manner, the telescopic rod of the grabbing cylinder is hinged to the outer support arm, and the telescopic rod of the adjusting cylinder is connected to the inner support arm.

In a possible implementation manner, the linear driving assembly comprises two sliding rails fixedly arranged on the sliding plate, a driving motor fixedly arranged below the rear end of the sliding plate, a lead screw connected with the driving motor through a transmission assembly, and a nut connected to the lead screw, wherein the sliding rails are symmetrically arranged on the left side and the right side of the lead screw, second sliding blocks are arranged below the sliding connection plate and correspond to the sliding rails, and the second sliding blocks are in sliding fit with the sliding rails.

In a possible implementation manner, the transmission assembly comprises a driving wheel assembled on the main shaft of the driving motor, a driven wheel assembled on the screw rod, and a synchronous belt wound on the driving wheel and the driven wheel.

In a possible implementation mode, the device further comprises a dust cover, and the sliding rail and the screw rod are both provided with dust covers.

In a possible implementation manner, a drag chain is further arranged on the sliding plate.

Compared with the prior art, the circuit breaker dragging mechanism provided by the invention has the beneficial effects that: the linear driving assembly is used for driving the gripper assembly to move forwards, the gripper assembly is used for gripping the circuit breaker, and the circuit breaker is driven by the linear driving assembly to move backwards, so that the circuit breaker can be pulled out of the power distribution cabinet. Utilize the circuit breaker dragging mechanism that this embodiment provided, when the circuit breaker is changed or is maintained, can utilize power to drag out the internal circuit breaker of cabinet to it is internal to push into the cabinet with maintenance back or new circuit breaker, realizes that the automation of circuit breaker drags out or pushes, greatly reduced artifical intensity of labour, alleviateed operation personnel's work burden, improved work efficiency.

And the circuit breaker dragging mechanism that this embodiment provided, because the push rod that switches the operation subassembly is twisting the left side or the right side of motor soon, the push rod can assemble sliding connection board on, tongs subassembly and switching operation subassembly are integrated on sliding connection board, two subassemblies use sliding connection board as depending on, shortened sliding connection board length in front and back direction, integrated back size is little, and is small, light in weight, hold up or remove sliding connection board and can assemble these two subassemblies on the slide wholly, easy operation during the equipment, the equipment is convenient.

Drawings

Fig. 1 is a schematic perspective view (top view) of a circuit breaker dragging mechanism provided in an embodiment of the present invention;

fig. 2 is a schematic perspective view (bottom view) of a circuit breaker dragging mechanism according to an embodiment of the present invention;

fig. 3 is a schematic perspective view (bottom view) of a circuit breaker dragging mechanism provided by an embodiment of the present invention, with a slide plate removed;

fig. 4 is a schematic perspective view illustrating an integrated structure of the gripper assembly and the switching operation assembly according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a gripper assembly according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a circuit breaker dragging mechanism and a circuit breaker provided in an embodiment of the present invention;

description of reference numerals:

1. a slide plate; 2. a supporting seat; 21. section steel; 22. angle steel; 3. a gripper assembly; 31. a grabbing cylinder; 32. adjusting the air cylinder; 33. a gripper; 34. a reinforcing plate; 35. a rotating shaft; 36. a bearing seat; 37. a crank arm; 371. a shaft sleeve; 372. an outer support arm; 373. an inner support arm; 38. a tensioning sleeve; 39. a third slider; 4. sliding the connecting plate; 5. a drag chain; 6. switching the operating components; 61. a sleeve assembly; 62. a screwing motor; 63. a push rod; 64. a guide rail; 65. a first slider; 66. a follow-up connecting plate; 67. a moving block; 7. a linear drive assembly; 71. a drive motor; 72. a screw rod; 73. a slide rail; 74. a driven wheel; 75. a synchronous belt; 76. a driving wheel; 77. a second slider; 78. a screw nut; 8. a circuit breaker; 9. a dust cover.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "front", "back", "left", "right", etc. appear, the positional relationship when the circuit breaker is drawn out of operation, with the direction toward the circuit breaker being front and the direction away from the circuit breaker being back, is merely for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 to 5 together, the circuit breaker dragging mechanism provided by the present invention will now be described. The circuit breaker dragging mechanism comprises a sliding plate 1, a linear driving assembly 7, a sliding connecting plate 4, a switching operation assembly 6 and two groups of gripper assemblies 3, wherein the linear driving assembly 7 is assembled on the sliding plate 1; the slide attachment plate 4 is connected to the linear drive assembly 7 by a nut 78.

The switching operation assembly 6 is arranged on the sliding connection plate 4, the switching operation assembly 6 comprises a screwing motor 62, a sleeve assembly 61, a push rod 63, a guide rail 64, a first sliding block 65 and a follow-up connection plate 66, the guide rail 64 is fixed on the sliding connection plate 4, the first sliding block 65 is in sliding fit with the guide rail 64, the screwing motor 62 is fixed on the first sliding block 65, and the sleeve assembly 61 is assembled on a spindle of the screwing motor 62; the push rod 63 is fixed on the sliding connection plate 4 and located on one side of the screwing motor 62, the center line of the push rod 63 is parallel to the moving direction of the first slide block 65, the front end of the push rod 63 is provided with a moving block 67, and the follow-up connection plate 66 is connected with the moving block 67 and the first slide block 65.

As shown in fig. 6, the two groups of gripper assemblies 3 are disposed on the sliding connection plate 4 and symmetrically disposed on the left and right sides of the switching operation assembly 6; the linear driving assembly 7 drives the sliding connection plate 4 to move forwards, so that the gripper 33 of the gripper assembly 3 grips the circuit breaker 8 and moves backwards to pull the circuit breaker 8 out of the power distribution cabinet.

Compared with the prior art, the circuit breaker dragging mechanism provided by the invention has the beneficial effects that: the linear driving assembly is used for driving the gripper assembly to move forwards, the gripper assembly is used for gripping the circuit breaker, and the circuit breaker is driven by the linear driving assembly to move backwards, so that the circuit breaker can be pulled out of the power distribution cabinet. Utilize the circuit breaker pulling mechanism that this embodiment provided, install on taking the lift dolly of walking wheel, when the circuit breaker is changed or is maintained, can utilize power to drag out the internal circuit breaker of cabinet to it is internal to push into the cabinet with maintenance back or new circuit breaker, realizes that the automation of circuit breaker drags out or pushes, greatly reduced artifical intensity of labour, alleviateed operation personnel's work burden, improved work efficiency.

And the circuit breaker dragging mechanism that this embodiment provided, because the push rod that switches the operation subassembly is twisting the left side or the right side of motor soon, the push rod can assemble sliding connection board on, tongs subassembly and switching operation subassembly are integrated on sliding connection board, two subassemblies use sliding connection board as depending on, shortened sliding connection board length in front and back direction, integrated back size is little, and is small, light in weight, hold up or remove sliding connection board and can assemble these two subassemblies on the slide wholly, easy operation during the equipment, the equipment is convenient.

The effect of switching operation subassembly 6 that this embodiment provided is when circuit breaker 8 pushes away the switch board to close the switch board door after, push rod 63 promotes slide 65 forward, slide 65 drives to revolve wrong motor 62 and sleeve subassembly 61 forward movement, and sleeve subassembly 61 is aimed at shaking into on the circuit breaker 8 and is shaken out the handle hole, realizes the switching of circuit breaker 8 test state and operating condition. The switching of 8 operating condition of circuit breaker utilizes motor drive to realize, has replaced artifical manual operation, has reduced manual operation's intensity of labour.

Referring to fig. 6, specifically changing the operation process of circuit breaker 8, assemble the circuit breaker that this embodiment provided and pull the mechanism on three-dimensional moving platform, through three-dimensional moving platform XYZ to position control, can realize snatching that the accurate position that is in circuit breaker 8 of pulling the mechanism waits to change the position, each position control can be realized through automatic control, also need not artifical manual operation, labour saving and time saving.

In some embodiments, as shown in fig. 4 and 5, the gripper assembly 3 includes a gripper 33, a rotating shaft 35 and a gripping cylinder 31, the gripper 33 is assembled on the rotating shaft 35, two ends of the rotating shaft 35 are assembled on the sliding connection plate 4 through a bearing seat 36, a cylinder body of the gripping cylinder 31 is hinged on the sliding connection plate 4, and a telescopic rod of the gripping cylinder 31 is hinged on a crank arm 37 assembled on the rotating shaft 35; the telescopic rod of the grabbing cylinder 31 extends forwards, the driving rotating shaft 35 drives the grabbing hand 33 to overturn downwards, and the circuit breaker 8 is grabbed.

The working process of the gripper assembly 3 is as follows: the driving motor 71 is started to drive the sliding plate 1 to move forwards to the circuit breaker 8 grabbing position, then the telescopic rod of the grabbing cylinder 31 extends forwards to push the rotating shaft 35 to rotate downwards, and the hand grip 33 can be driven to turn downwards until the hand grip 33 grabs the handle on the chassis vehicle of the circuit breaker 8; the driving motor 71 rotates reversely to drive the screw rod 72 to rotate reversely, the screw nut 78 moves backwards to drive the sliding plate 1 to move backwards, and the circuit breaker 11 can move backwards along with the grabbing component until the circuit breaker is separated from the power distribution cabinet and is dragged onto the sliding plate 1; the telescopic rod is retracted to drive the rotating shaft 35 to rotate backwards and reversely, and the hand grip 33 is separated from the circuit breaker 8. Utilize the cylinder of tongs subassembly 3 to snatch circuit breaker 8 automatically to utilize driving motor 71's power to realize dragging backward of circuit breaker 8 automatically, can liberate operating personnel's both hands, alleviate operating personnel's intensity of labour, and can realize accurate counterpoint through automatic control, also avoided artifical hand eye action to need the problem of trying to snatch many times.

Alternatively, as shown in fig. 4 and 5, the hand grip 33 is a bent sheet metal member so as to be able to grasp a handle of the circuit breaker. Meanwhile, in order to improve the strength of the grip 33 and prevent the grip 33 from being deformed during pulling, a reinforcing plate 34 is attached to the grip 33, and particularly, the reinforcing plate 34 may be a rectangular steel pipe.

Alternatively, as shown in fig. 4 and 5, the crank arm 37 is fitted to the rotating shaft 35 at the outer end of the bearing housing 36, and the hand grip 33 is fitted between the two bearing housings 36. Meanwhile, a tension sleeve 38 is provided on the rotating shaft 35 to which the crank arm 37 is assembled to lock the crank arm 37. The tensioning sleeve 38 may be a nut, and may be a double nut or a cooperating pin to lock the closure.

In some embodiments, as shown in fig. 4 and 5, the gripper assembly 3 further includes an adjusting cylinder 32 and a sliding block 39 slidably mounted on the rotating shaft 35, the gripper 33 is fixed on the third sliding block 39, a cylinder body of the adjusting cylinder 32 is fixed on the gripper 33, and an expansion link of the adjusting cylinder 32 is connected with the crank arm 37; the rotation shaft 35 has a rotation preventing structure for preventing the third slider 39 from rotating.

The adjusting cylinder 32 is arranged on the basis of the hand grip 33 and the crank arm 37, the hand grip 33 and the crank arm 37 are both assembled on the rotating shaft 35, the adjusting cylinder 32 extends out, the hand grip 33 can move along the rotating shaft 35, so that the effect of adjusting the distance between the two hand grips 33 is achieved, the distance between the hand grips 33 can be adjusted according to the distance between the hand grips on the circuit breaker 8 through adjustment of the adjusting cylinder 32, the position correspondence between the hand grip 33 and the hand grips of the circuit breaker 8 is guaranteed, and the adjusting cylinder 32 also has the effect of positioning the hand grip 33.

In some embodiments, as shown in fig. 4 and 5, the extension rod of the adjustment cylinder 32 is connected to the crank arm 37 by a floating joint. The floating joint connection is adopted, so that the hand grip 33 can play a role in vibration reduction and buffering in the process of adjusting the displacement.

In some embodiments, as shown in fig. 4 and 5, the anti-rotation structure is an anti-rotation plane disposed on the rotating shaft 35. With the cooperation of pivot 35 planar pivot 35 section of the hole of third slider 39 of pivot 35 complex, prevent changeing the function that the plane replaced the key, play and prevent that third slider 39 from taking place the problem of rotation, guarantee can with pivot 35 synchronous revolution, prevent changeing the plane and also play the effect of direction to the slip of third slider 39. The crank arm 37 is assembled at the outer end of the rotating shaft 35, and the rotation of the crank arm 37 can be prevented by adopting a key connection mode.

In a specific implementation manner of the circuit breaker dragging mechanism provided by this embodiment, the rotation preventing structure may also be as follows: the cross section of the rotating shaft 35 is oval, square, regular hexagon, etc., and two symmetrical anti-rotation planes can be arranged on the rotating shaft 35 to play the anti-rotation role after the crank arms 37 are assembled. Of course, the two ends of the rotating shaft 35 are circular structures and are matched with the bearing seats 36 so as to facilitate the rotation of the rotating shaft 35.

In some embodiments, as shown in fig. 4 and 5, the crank arm 37 includes a sleeve 371 assembled on the rotating shaft 35, and an outer arm 372 and an inner arm 373 radially connected to the sleeve 371, the outer arm 372 and the inner arm 373 are axially offset, the telescopic rod of the grasping cylinder 31 is hinged to the outer arm 372, and the telescopic rod of the adjusting cylinder 32 is connected to the inner arm 373.

Snatch cylinder 31 and adjust cylinder 32 and articulate respectively on different fulcrums, and through the dislocation set of interior support arm 373 with outer support arm 372, embody the disalignment of snatching cylinder 31 hinge point and adjust cylinder 32 hinge point, and then embody the telescopic link at adjust cylinder 32 and the disalignment of snatching cylinder 31's hinge point, for the flexible great torsion that provides of the flexible of snatching cylinder 31, thereby realize the optimization of energy consumption, or, realize that tongs 33 upset catches the action of the handle of circuit breaker 8, adopt less energy consumption can.

In some embodiments, as shown in fig. 1 to fig. 3, the linear driving assembly 7 includes two sliding rails 73 fixed on the sliding plate 1, a driving motor 71 fixed below the rear end of the sliding plate 1, a screw rod 72 connected to the driving motor 71 through a transmission assembly, and a nut 78 connected to the screw rod, wherein the sliding rails 73 are symmetrically disposed on the left and right sides of the screw rod 72, a second sliding block 77 is disposed below the sliding connection plate 4 and corresponding to the sliding rails 73, and the second sliding block 77 is in sliding fit with the sliding rails 73. The driving assembly adopts a transmission connection mode, the driving motor 71 is arranged below the sliding plate, the length of the sliding plate in the front-back direction is shortened by utilizing the space below the sliding plate, and the size of the whole structure is reduced.

In some embodiments, as shown in fig. 1 to 3, the transmission assembly includes a driving pulley 76 mounted on the main shaft of the driving motor 71, a driven pulley 74 mounted on the lead screw 72, and a timing belt 75 wound around the driving pulley 76 and the driven pulley 74. The force transmission is reliable and stable by using a synchronous belt transmission mode.

In some embodiments, as shown in fig. 1 to 3, a dust cover 9 is further included, and the sliding rail 73 and the lead screw 72 are provided with the dust cover 9. The dust cover is additionally arranged on the sliding rail and the screw rod, and when the equipment is idle, the dust cover can prevent dust, collision and other damage problems.

In some embodiments, as shown in fig. 1 to 2, the skateboard 1 is further provided with a drag chain 5. Adopt the mode of tow chain, make things convenient for the spacing line of walking of cylinder trachea and photoelectricity, rule control circuit, avoid trachea signal line to become a group in a jumble, the hindrance that causes the equipment operation.

As shown in fig. 1 to 3, the left and right sides of the slide plate 1 are respectively provided with a support base 2 for supporting the circuit breaker 8. The circuit breaker 8 is pulled out, and along with the backward movement of the sliding connection plate 4, the circuit breaker 8 moves to the sliding plate 1 and moves along the supporting seats 2 at the two sides. Specifically, supporting seat 2 includes shaped steel 21 and angle steel 22, and shaped steel 21 is fixed on slide 1, as angle steel 22's support, and angle steel 22 provides reliable assurance as the track of the wheel removal of the chassis car of circuit breaker 11, support and the position after dragging out for circuit breaker 8.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A circuit breaker pulling mechanism, comprising:

a skateboard (1);

a linear drive assembly (7) mounted on the sled (1);

the sliding connecting plate (4) is connected to the linear driving assembly (7) through a nut (78);

the switching operation assembly (6) is arranged on the sliding connection plate (4), the switching operation assembly (6) comprises a screwing motor (62), a sleeve assembly (61), a push rod (63), a guide rail (64), a first sliding block (65) and a follow-up connection plate (66), the guide rail (64) is fixed on the sliding connection plate (4), the first sliding block (65) is in sliding fit with the guide rail (64), the screwing motor (62) is fixed on the first sliding block (65), and the sleeve assembly (61) is assembled on a main shaft of the screwing motor (62); the push rod (63) is fixed on the sliding connecting plate (4) and is positioned on one side of the screwing motor (62), the center line of the push rod (63) is parallel to the moving direction of the first sliding block (65), a moving block (67) is arranged at the front end of the push rod (63), and the follow-up connecting plate (66) is connected with the moving block (67) and the first sliding block (65); and

the two groups of gripper assemblies (3) are arranged on the sliding connecting plate (4) and symmetrically arranged on the left side and the right side of the switching operation assembly (6); the linear driving assembly (7) drives the sliding connection plate (4) to move forwards, so that the hand grips (33) of the hand grip assemblies (3) grip the circuit breaker (8), and move backwards to pull the circuit breaker (8) out of the power distribution cabinet.

2. The circuit breaker dragging mechanism according to claim 1, wherein the hand grip assembly (3) comprises the hand grip (33), a rotating shaft (35) and a gripping cylinder (31), the hand grip (33) is assembled on the rotating shaft (35), two ends of the rotating shaft (35) are assembled on the sliding connection plate (4) through a bearing seat (36), a cylinder body of the gripping cylinder (31) is hinged on the sliding connection plate (4), and a telescopic rod of the gripping cylinder (31) is hinged on a crank arm (37) assembled on the rotating shaft (35); the telescopic rod of the grabbing cylinder (31) extends forwards to drive the rotating shaft (35) to drive the grabbing hand (33) to turn downwards to grab the breaker (8).

3. The circuit breaker dragging mechanism according to claim 2, wherein the hand grip assembly (3) further comprises an adjusting cylinder (32) and a third sliding block (39) slidably assembled on the rotating shaft (35), the hand grip (33) is fixed on the third sliding block (39), a cylinder body of the adjusting cylinder (32) is fixed on the hand grip (33), and an expansion rod of the adjusting cylinder (32) is connected with the crank arm (37); the rotating shaft (35) is provided with an anti-rotation structure capable of preventing the third sliding block (39) from rotating.

4. The circuit breaker pulling mechanism as recited in claim 3, wherein the extension rod of the adjustment cylinder (32) is connected to the crank arm (37) by a floating joint.

5. The circuit breaker pulling mechanism according to claim 3, wherein the anti-rotation structure is an anti-rotation plane provided on the rotating shaft (35).

6. The circuit breaker dragging mechanism according to claim 3, characterized in that the crank arm (37) comprises a bushing fitted to the rotating shaft (35), an outer arm and an inner arm radially connected to the bushing, the outer arm being axially offset from the inner arm, the telescopic rod of the gripping cylinder (31) being hinged to the outer arm, the telescopic rod of the adjustment cylinder (32) being connected to the inner arm.

7. The circuit breaker dragging mechanism according to claim 1, wherein the linear driving assembly (7) comprises two sliding rails (73) fixed on the sliding plate (1), a driving motor (71) fixed below the rear end of the sliding plate (1), a screw rod (72) connected with the driving motor (71) through a transmission assembly, and a nut (78) connected to the screw rod, wherein the sliding rails (73) are symmetrically arranged on the left side and the right side of the screw rod (72), a second sliding block (77) is arranged below the sliding connection plate (4) at a position corresponding to the sliding rails (73), and the second sliding block (77) is in sliding fit with the sliding rails (73).

8. The circuit breaker pulling mechanism as recited in claim 7, wherein the transmission assembly comprises a driving pulley (76) mounted on a main shaft of the driving motor (71), a driven pulley (74) mounted on the lead screw (72), and a timing belt (75) wound around the driving pulley (76) and the driven pulley (74).

9. The circuit breaker dragging mechanism according to claim 7, further comprising a dust cover (9), wherein the dust cover (9) is disposed on each of the sliding rail (73) and the screw (72).

10. The circuit breaker pulling mechanism according to claim 1, wherein a pulling chain (5) is further provided on the slider (1).

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