A reversible circuit breaker installation and testing device

Abstract

The application relates to a circuit breaker auxiliary installation device, in particular to a reversible circuit breaker installation and inspection device. The device comprises a machine table, a positioning seat is arranged on the machine table, and a pole column is horizontally placed on the positioning seat; a clamping and overturning mechanism for overturning the machine box is further arranged on the machine table, and the clamping and overturning mechanism has two states of forward rotation and reverse rotation; when the clamping and overturning mechanism is 90-degree forward rotated, the machine box is moved from a vertical state to a horizontal state, a first installation hole in the front surface of the machine box is aligned with a second installation hole in the bottom of the pole column, and the bottom surface of the machine box faces the outside; when the clamping and overturning mechanism is 90-degree reverse rotated, the machine box, the assembled pole column and the bottom disc vehicle can be reset from the horizontal state to the vertical state; a movable inspection plate is further arranged on the machine table, and an inspection hole with the same shaft as the contact arm installation hole of the pole column in the vertical state is further arranged on the inspection plate. The application can improve the installation efficiency and precision of the circuit breaker.

Description

Technical Field

[0001] This application relates to circuit breaker auxiliary installation equipment, and more particularly to a reversible circuit breaker installation and inspection device. Background Technology

[0002] The following problems exist in the installation of circuit breakers using related technologies: 1. The installation of circuit breaker poles, contact arms, and chassis vehicles cannot be combined, resulting in multiple handling operations; 2. The electric control of the assembly tooling tilting platform is complex and increases energy consumption; 3. Vertical assembly of poles requires manual adjustment of installation accuracy, and the installation difficulty is not considered; 4. The procedure of checking the installation accuracy with a gauge after the contact arms are installed is unreasonable; 5. It is impossible to perform interlocking inspection between the chassis vehicle and the circuit breaker mechanism on the installation tooling. Summary of the Invention

[0003] In view of this, this application provides a reversible circuit breaker installation and inspection device, which can improve the installation efficiency of circuit breakers.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A reversible circuit breaker installation and inspection device, characterized in that: it includes a machine base, on which a positioning seat for positioning and placing poles is provided, the poles being horizontally placed on the positioning seat; the machine base is also provided with a clamping and reversing mechanism for rotating the chassis, the clamping and reversing mechanism having two states: when the clamping and reversing mechanism rotates 90° forward, it moves the chassis from a vertical state to a horizontal state, with the first mounting hole on the front of the chassis aligned with the second mounting hole on the bottom of the pole, and the bottom surface of the chassis facing outward; when the clamping and reversing mechanism rotates 90° reverse, it can move the chassis, the assembled poles, and the chassis vehicle from the horizontal state back to the vertical state; the machine base is also provided with a movable inspection plate, the inspection plate being provided with inspection holes coaxial with the contact arm mounting holes of the poles in the vertical state.

[0006] The aforementioned flip-up circuit breaker installation and inspection device, as described in this application, positions the pole post using a positioning base, allowing it to be placed horizontally. A clamping and flipping mechanism then flips the chassis, enabling assembly of the pole post and chassis in a horizontal position, facilitating installation. Furthermore, the bottom surface of the chassis faces outwards, facilitating installation on a chassis vehicle. An inspection plate is also provided on the platform; when the contact arm is installed onto the pole post, the inspection plate provides precise positioning. Therefore, this device allows for the installation of the pole post, contact arm, and chassis vehicle on a single unit, improving the installation efficiency of the circuit breaker.

[0007] In some embodiments, the clamping and flipping mechanism includes a rotating shaft rotatably connected to the machine base and two crank arms mounted on the rotating shaft. Each crank arm is provided with a fixing component for fixing the chassis, and the two crank arms clamp the chassis in the middle for flipping.

[0008] In some embodiments, the fixing assembly includes a small fixing pin and a large fixing pin fixedly installed on the inner side of the crank arm. The small fixing pin and the large fixing pin are used to insert into the first pin hole and the second pin hole of the chassis side panel, respectively. The large fixing pin is also provided with an eccentric hook. The eccentric hook includes an eccentric shaft rotatably connected in the large fixing pin, a hook head fixedly installed at one end of the inner side of the eccentric shaft, a handle rod installed at the other end of the eccentric shaft, a spring sleeved on the eccentric shaft with its two ends respectively pressing between the large fixing pin and the handle rod, and an elastic positioning bead installed inside the large fixing pin to lock the rotational position of the eccentric shaft. When the eccentric shaft rotates in one direction, the hook head protrudes from the outer peripheral wall of the large fixing pin and can lock the inner wall of the chassis side panel. The small fixing pin and the large fixing pin are used to insert into the pin holes on the chassis to ensure the accuracy of the position during flipping. The eccentric hook can lock the inner wall of the chassis side panel to prevent the chassis from shaking or falling out.

[0009] In some embodiments, a downwardly protruding chassis limiting block is fixedly provided on the outer wall of the crank arm. The left and right sides of the chassis vehicle are restricted between the chassis limiting blocks of the two crank arms. A downwardly protruding chassis positioning piece, located inside the chassis limiting block, is also provided at the end of the crank arm near the rotation axis to lock one end of the chassis vehicle. The chassis limiting block is mainly used to limit the left and right sides of the chassis vehicle, and the chassis positioning piece is mainly used to limit the lower end of the chassis vehicle, thereby ensuring the accuracy of the chassis vehicle's position during installation. The chassis positioning piece is integrally formed with the crank arm.

[0010] In some embodiments, the clamping and flipping mechanism further includes a worm gear reducer connected to the rotating shaft for driving its rotation. The clamping and flipping mechanism achieves flipping through a worm gear, which is easy, labor-saving, and energy-efficient.

[0011] In some embodiments, the clamping and flipping mechanism is located on the front side of the positioning seat, and the inspection plate is located on the rear side of the positioning seat. The positioning seats are arranged in multiple rows along the left-right direction, with two positioning seats in each row, spaced apart along the front-back direction. Each positioning seat includes a circular base that fits into the contact arm mounting hole of the pole post. The circular base is provided with positioning pins that mate with the insertion holes in the contact arm mounting holes. The two contact arm mounting holes on the pole post are respectively inserted into the front and rear positioning seats. The number of rows of positioning seats can be reasonably arranged according to the number of pole posts, such as three rows or others.

[0012] In some embodiments, the machine base is provided with two linear guide rails located on the left and right sides of the positioning seat, respectively. The linear guide rails extend in the front-to-back direction, and the inspection plate is slidably connected to the linear guide rails via a slider. The number of inspection holes on the inspection plate corresponds to the number of mounting holes for the contact arm on the pole. The inspection plate is positioned higher than the positioning seat to avoid interference.

[0013] In some embodiments, the machine base is provided with two guide rails located on the left and right sides of the clamping and flipping mechanism, respectively, and the guide rails extend in the front-to-back direction. The machine base is also provided with a flipping support located between two crank arms and extending in the front-to-back direction. The flipping support is rotatable relative to the machine base. When the flipping support is upright, its height is higher than the guide rails, and the bottom surface of the chassis rests on the flipping support to allow the chassis to be pushed into position. When the flipping support is flipped downwards, its height is lower than the guide rails, allowing the wheels of the chassis mounted on the chassis to be placed on the guide rails. The flipping support is rotatably connected to the machine base via hinges and is made of square bars.

[0014] In some embodiments, the end of the guide rail is provided with an upwardly protruding limiting hook, allowing the chassis to move back and forth on the guide rail. The limiting hook prevents the chassis from derailing, and the chassis's ability to move back and forth on the guide rail allows for direct interlocking inspection on the guide rail, reducing handling requirements.

[0015] In some embodiments, the crank arm is connected to the rotating shaft in a left-right movable manner, and the rotating shaft is also provided with a touch limit block for limiting the movement position of the crank arm.

[0016] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0017] 1. This application enables the pole post, contact arm, and chassis vehicle to be uniformly installed on this device;

[0018] 2. This application achieves rotation via a worm gear, which is easy, labor-saving, and energy-efficient;

[0019] 3. The horizontal installation of the pole column in this application ensures accuracy while facilitating installation;

[0020] 4. The contact arm of this application is positioned using a gauge during installation, ensuring precise installation and a reasonable procedure;

[0021] 5. After the pole, contact arm, and chassis of this application are installed, interlocking tests can be performed directly on the device, reducing handling. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the clamping and flipping mechanism in the embodiments of this application;

[0024] Figure 3 This is a schematic diagram of the eccentric hook structure in an embodiment of this application;

[0025] Figure 4 This is a diagram showing the usage state of the eccentric hook in the embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the structure of the inspection plate and positioning seat in the embodiments of this application;

[0027] Figure 6 This is a schematic diagram of the positioning seat in an embodiment of this application;

[0028] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 8 Usage status of this application embodiment Figure 1 ;

[0030] Figure 9 Usage status of this application embodiment Figure 2 ;

[0031] Figure 10 Usage status of this application embodiment Figure 3 ;

[0032] Figure 11 Usage status of this application embodiment Figure 4 ;

[0033] Figure 12 Usage status of this application embodiment Figure 5 ;

[0034] Figure 13 Usage status of this application embodiment Figure 6 .

[0035] Label Explanation: 1. Machine base; 2. Positioning seat; 21. Circular seat; 22. Positioning pin; 3. Clamping and flipping mechanism; 31. Rotating shaft; 32. Crank arm; 33. Small fixing pin; 34. Large fixing pin; 35. Eccentric hook; 351. Eccentric shaft; 352. Hook head; 353. Handle lever; 354. Spring; 355. Elastic positioning bead; 36. Chassis limit block; 37. Chassis positioning plate; 38. Worm gear reducer; 39. Contact 4. Limiting block; 5. Inspection plate; 6. Inspection hole; 7. Linear guide rail; 8. Slider; 9. Guide rail strip; 10. Limiting hook; 11. Flip support; 12. Hinge; 13. Pole post; 14. Second mounting hole; 15. Contact arm mounting hole; 16. Insertion hole; 17. Chassis; 18. First mounting hole; 19. Bottom surface; 20. Side plate; 10. First pin hole; 11. Second pin hole; 22. Chassis; 13. Wheel; 14. Contact arm. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0037] See Figures 1 to 13 This application provides a reversible circuit breaker installation and inspection device, including a machine base 1. The machine base 1 is provided with a positioning seat 2 for positioning and placing the pole post 7, and the pole post 7 is horizontally placed on the positioning seat 2. The machine base 1 is also provided with a clamping and flipping mechanism 3 for driving the chassis 8 to flip. The clamping and flipping mechanism 3 has two states: forward and reverse. When the clamping and flipping mechanism 3 rotates forward 390°, it moves the chassis 8 from a vertical state to a horizontal state, with the first mounting hole 81 on the front of the chassis 8 aligned with the second mounting hole 71 on the bottom of the pole post 7, and the bottom surface 82 of the chassis 8 facing outward. When the clamping and flipping mechanism 3 rotates reverse 390°, it can move the chassis 8, the assembled pole post 7, and the chassis 9 from the horizontal state back to the vertical state. The machine base 1 is also provided with a movable inspection plate 4, and the inspection plate 4 is also provided with an inspection hole 41 that is coaxial with the contact arm mounting hole 72 of the pole post 7 in the vertical state.

[0038] This reversible circuit breaker installation and inspection device positions the pole 7 via the positioning seat 2, allowing it to be placed horizontally. The clamping and flipping mechanism 3 then flips the housing 8, enabling assembly of the pole 7 and housing 8 in a horizontal position, facilitating installation. Furthermore, the bottom surface 82 of the housing 8 faces outwards, facilitating installation on the chassis 9. The machine base 1 also features an inspection plate 4, which positions the contact arm 10 when it is installed onto the pole 7, ensuring precise installation. Therefore, this device allows for the installation of the pole 7, contact arm 10, and chassis 9 on a single unit, improving circuit breaker installation efficiency.

[0039] The clamping and flipping mechanism 3 includes a rotating shaft 31 rotatably connected to the machine base 1 and two crank arms 32 mounted on the rotating shaft 31. Each of the two crank arms 32 is provided with a fixing component for fixing the chassis 8. The two crank arms 32 clamp the chassis 8 in the middle and flip it.

[0040] The fixing assembly includes a small fixing nail 33 and a large fixing nail 34 fixedly installed inside the crank arm 32. The small fixing nail 33 and the large fixing nail 34 are used to insert into the first pin hole 84 and the second pin hole 85 of the side plate 83 of the chassis 8, respectively. An eccentric hook 35 is also provided inside the large fixing nail 34. The eccentric hook 35 includes an eccentric shaft 351 rotatably connected inside the large fixing nail 34, a hook head 352 fixedly installed at one end of the inner side of the eccentric shaft 351, a handle bar 353 installed at the other end of the eccentric shaft 351, a spring 354 sleeved on the eccentric shaft 351 and with its two ends respectively pressing between the large fixing nail 34 and the handle bar 353, and an elastic positioning bead 355 installed inside the large fixing nail to lock the rotation position of the eccentric shaft 351. When the eccentric shaft 351 rotates in one direction, the hook head 352 protrudes from the outer peripheral wall of the large fixing nail 34 and can lock the inner wall of the side plate 83 of the chassis 8. The small fixing pins 33 and the large fixing pins 34 are used to be inserted into the pin holes on the chassis 8 to ensure the accuracy of the position when flipping. The eccentric hook 35 can be used to hold the inner wall of the side plate 83 of the chassis 8 to prevent the chassis 8 from shaking or falling out.

[0041] A downwardly protruding chassis limiting block 36 is fixedly installed on the outer wall of the crank arm 32. The left and right sides of the chassis vehicle 9 are restricted between the chassis limiting blocks 36 of the two crank arms 32. A chassis positioning piece 37, protruding downwards and located inside the chassis limiting block 36, is also provided at the end of the crank arm 32 near the rotation shaft 31 to hold one end of the chassis vehicle 9 in place. The chassis limiting block 36 is mainly used to limit the left and right sides of the chassis vehicle 9, and the chassis positioning piece 37 is mainly used to limit the lower end of the chassis vehicle 9, thereby ensuring the accuracy of the chassis vehicle 9's position during installation. The chassis positioning piece 37 is integrally formed with the crank arm 32.

[0042] The clamping and flipping mechanism 3 also includes a worm gear reducer 38 connected to the rotating shaft 31 for driving its rotation. The clamping and flipping mechanism 3 achieves flipping through the worm gear, which is easy, labor-saving, and energy-efficient.

[0043] The clamping and flipping mechanism 3 is located on the front side of the positioning seat 2, and the inspection plate 4 is located on the rear side of the positioning seat 2. The positioning seats 2 are arranged in multiple rows along the left-right direction, with two positioning seats 2 in each row, spaced apart along the front-back direction. Each positioning seat 2 includes a circular base 21 that fits into the contact arm mounting hole 72 of the pole post 7. The circular base 21 is provided with a positioning pin 22 that mates with the insertion hole 73 in the contact arm mounting hole 72. The two contact arm mounting holes 72 on the pole post 7 are respectively inserted into the front and rear positioning seats 2. The number of rows of positioning seats 2 can be reasonably arranged according to the number of pole posts 7, such as three rows or others.

[0044] The machine base 1 is equipped with two linear guide rails 42 located on the left and right sides of the positioning seat 2, respectively. The linear guide rails 42 extend in the front-to-back direction, and the inspection plate 4 is slidably connected to the linear guide rails 42 via a slider 43. The number of inspection holes 41 on the inspection plate 4 corresponds to the number of contact arm mounting holes 72 on the pole post 7. The inspection plate 4 is higher than the positioning seat 2 to avoid interference.

[0045] The machine base 1 is equipped with two guide rails 5 located on the left and right sides of the clamping and flipping mechanism 3, respectively, extending in the front-to-back direction. The machine base 1 also has a flipping support 6 located between two crank arms 32 and extending in the front-to-back direction. The flipping support 6 is rotatable relative to the machine base 1. When the flipping support 6 is upright, its height is higher than the guide rails 5, and the bottom surface 82 of the chassis 8 rests on the flipping support 6 to allow the chassis 8 to be pushed into position. When the flipping support 6 is flipped downwards, its height is lower than the guide rails 5, allowing the wheels 91 of the chassis mounted on the chassis 8 to be placed on the guide rails 5. The flipping support 6 is rotatably connected to the machine base 1 via a hinge 61 and is made of square bars.

[0046] The end of the guide rail 5 is provided with an upwardly protruding limiting hook 51, and the chassis 9 can move back and forth on the guide rail 5. The limiting hook 51 prevents the chassis 9 from derailing. Since the chassis 9 can move back and forth on the guide rail 5, interlocking inspection can be performed directly on the guide rail 5, reducing handling.

[0047] The crank arm 32 is connected to the rotating shaft 31 in a left-right movable manner. The rotating shaft 31 is also provided with a touch limit block 39 for limiting the movement position of the crank arm 32.

[0048] Specifically, the rotating shaft 31 is a square tube, and the crank arm is movably connected to the rotating shaft 31 through a square hole.

[0049] The following is a brief description of the working process and usage method of the reversible circuit breaker installation and inspection device according to the above embodiments:

[0050] 1. See Figure 8 Align the mounting holes 72 of the contact arms of the three pole posts 7 downward with the positioning base 2, so that the positioning pins 22 are aligned with the insertion holes 73, and then turn the two flip supports 6 to the side.

[0051] 2. See also Figure 9 Place the circuit breaker housing 8 onto the flip support 6; align the large and small fixing pins 33 on the two side crank arms 32 with the first pin hole 84 and the second pin hole 85 of the housing 8; push the crank arms 32 towards the middle and stop when they touch the limit block 39; rotate the eccentric hook 35 and stop when you hear a "click", thus completing the locking of the crank arms 32 and the housing 8.

[0052] 3. See also Figure 10 Operate the worm gear reducer with the handle to rotate the housing 8 90 degrees so that the bottom surface 82 of the circuit breaker housing 8 faces the operator. At this time, the pole 7 can be easily fastened to the circuit breaker housing 8.

[0053] 4. See also Figure 11 Place the bottom of the chassis 9 on the plane vacated by the crank arm 32, with the left side against the chassis limiting block 36 and locked into the chassis positioning piece 37, thus easily completing the fixation of the chassis 8 and the chassis 9.

[0054] 5. See also Figure 12 Place the two flip supports 6 flat; operate the worm gear reducer 38 with the handle to rotate the circuit breaker housing 8 90 degrees, so that the wheels 91 of the chassis 9 contact the guide rails 5.

[0055] 6. Complete the interlocking installation of the internal mechanisms of the chassis 9 and the housing 8;

[0056] 7. Rotate the eccentric hook 35 until you hear a "click" and stop. Move the crank arm 32 outward to release the lock between the device and the chassis 8.

[0057] 8. See also Figure 13 Pre-lock the contact arm 10 onto the pole post 7, gently push the inspection plate 4 to align the contact arm 10 with the inspection hole 41 on the inspection plate 4, and lock the contact arm 10. Install 6 contact arms 10 in this manner.

[0058] 9. Move the chassis 9 on the guide rail 5 to perform a circuit breaker interlocking test.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A reversible circuit breaker installation and inspection device, characterized in that: Includes a machine base (1), on which a positioning seat (2) is provided for positioning and placing the pole post (7), the pole post (7) is placed horizontally on the positioning seat (2); the machine base (1) is also provided with a clamping and flipping mechanism (3) for driving the machine housing (8) to flip, the clamping and flipping mechanism (3) has two states: forward and reverse; when the clamping and flipping mechanism (3) rotates 90° forward, it moves the machine housing (8) from the vertical state to the horizontal state, the first mounting hole on the front of the machine housing (8) ( 81) Align the second mounting hole (71) at the bottom of the pole post (7) and the bottom surface (82) of the chassis (8) faces outward; when the clamping and flipping mechanism (3) reverses 90°, it can bring the chassis (8) and the assembled pole post (7) and chassis (9) back from the horizontal state to the vertical state; the machine base (1) is also provided with a movable inspection plate (4), and the inspection plate (4) is also provided with an inspection hole (41) on the same axis as the contact arm mounting hole (72) of the pole post (7) in the vertical state.

2. The reversible circuit breaker installation and inspection device according to claim 1, characterized in that: The clamping and flipping mechanism (3) includes a rotating shaft (31) rotatably connected to the machine base (1) and two crank arms (32) mounted on the rotating shaft (31). Each of the two crank arms (32) is provided with a fixing component for fixing the chassis (8). The two crank arms (32) clamp the chassis (8) in the middle and flip it.

3. The reversible circuit breaker installation and inspection device according to claim 2, characterized in that: The fixing assembly includes a small fixing nail (33) and a large fixing nail (34) fixedly installed inside the crank arm (32). The small fixing nail (33) and the large fixing nail (34) are used to insert into the first pin hole (84) and the second pin hole (85) of the side plate (83) of the chassis (8), respectively. An eccentric hook (35) is also provided inside the large fixing nail (34). The eccentric hook (35) includes an eccentric shaft (351) rotatably connected inside the large fixing nail (34) and a hook head (351) fixedly installed at one end inside the eccentric shaft (351). 52) A handle (353) is provided at the other end of the eccentric shaft (351), a spring (354) is sleeved on the eccentric shaft (351) and its two ends are respectively pressed between the large fixing nail (34) and the handle (353), and an elastic positioning bead (355) is installed on the inside of the large fixing nail to lock the rotation position of the eccentric shaft (351). When the eccentric shaft (351) rotates in one direction, the hook (352) protrudes from the outer peripheral wall of the large fixing nail (34) and can be stuck in the inner wall of the side plate (83) of the chassis (8).

4. The reversible circuit breaker installation and inspection device according to claim 2, characterized in that: A downward protruding chassis limiting block (36) is fixedly provided on the outer side wall of the crank arm (32). The left and right sides of the chassis vehicle (9) are restricted between the chassis limiting blocks (36) of the two crank arms (32). A downward protruding chassis positioning piece (37) is also provided at the end of the crank arm (32) near the rotating shaft (31) and located inside the chassis limiting block (36) to lock one end of the chassis vehicle (9).

5. The reversible circuit breaker installation and inspection device according to claim 2, characterized in that: The clamping and flipping mechanism (3) also includes a worm gear reducer (38) connected to the rotating shaft (31) for driving its rotation.

6. The reversible circuit breaker installation and inspection device according to claim 1, characterized in that: The clamping and flipping mechanism (3) is located on the front side of the positioning seat (2), and the inspection plate (4) is located on the rear side of the positioning seat (2). The positioning seats (2) are arranged in multiple rows along the left and right direction. There are two positioning seats (2) in each row and they are spaced apart along the front and back direction. The positioning seat (2) includes a circular seat (21) that is inserted into the contact arm mounting hole (72) of the pole post (7). The circular seat (21) is provided with a positioning pin (22) that cooperates with the insertion hole (73) in the contact arm mounting hole (72). The two contact arm mounting holes (72) on the pole post (7) are respectively inserted into the front and rear positioning seats (2).

7. The reversible circuit breaker installation and inspection device according to claim 6, characterized in that: The machine base (1) is provided with two linear guide rails (42) located on the left and right sides of the positioning seat (2) respectively. The linear guide rails (42) extend in the front-back direction. The inspection plate (4) is slidably connected to the linear guide rails (42) by a slider (43).

8. The reversible circuit breaker installation and inspection device according to claim 2, characterized in that: The machine base (1) is provided with two guide rails (5) located on the left and right sides of the clamping and flipping mechanism (3), and the guide rails (5) extend in the front-back direction. The machine base (1) is also provided with a flipping support (6) located between two crank arms (32) and extending in the front-back direction. The flipping support (6) is rotatable relative to the machine base (1). When the flipping support (6) is upright, the height of the flipping support (6) is higher than that of the guide rails (5). The bottom surface (82) of the machine box (8) is placed on the flipping support (6) so that the machine box (8) can be pushed into place. When the flipping support (6) is flipped downward, the height of the flipping support (6) is lower than that of the guide rails (5) so that the wheels (91) of the chassis vehicle assembled on the machine box (8) can be placed on the guide rails (5).

9. The reversible circuit breaker installation and inspection device according to claim 8, characterized in that: The end of the guide rail (5) is provided with an upward protruding limiting hook (51), and the chassis (9) can move back and forth on the guide rail (5).

10. The reversible circuit breaker installation and inspection device according to claim 2, characterized in that: The crank arm (32) is connected to the rotating shaft (31) in a left-right movable manner. The rotating shaft (31) is also provided with a touch limit block (39) for limiting the movement position of the crank arm (32).

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