Brake unit turnover device and method

Abstract

The application provides a brake unit turnover device and method, and belongs to the technical field of rail transit, to solve the technical problem that the brake unit is heavy and at least two people are needed to cooperate to turn over the brake unit on a workbench in the prior art; the device comprises a base, a frame vertically arranged on the top of the base, a mounting seat slidably connected in the frame, a motor arranged on the mounting seat, a rotating shaft fixedly connected to the output end of the motor, a first placing seat fixedly connected to the rotating shaft, and a plurality of first fixing holes arranged on the first placing seat and corresponding to through holes on the brake unit; the device further comprises a lifting device for lifting the mounting seat; in the application, the lifting device can drive the first placing seat to ascend or descend; when the first placing seat is lowered to a position, workers can place the brake unit on the first placing seat with less effort; when the first placing seat is raised to a certain height, workers can easily overhaul the brake unit.

Description

Technical Field

[0001] This invention belongs to the field of rail transit technology, specifically relating to a braking unit flipping device and method. Background Technology

[0002] The braking unit (TBU) is a crucial component of the basic braking system of urban rail vehicles. The quality of its maintenance directly affects the braking performance, service life, and operational safety of the braking unit. To ensure maintenance quality, it is essential to strictly adhere to maintenance technical requirements and quality standards. After a major overhaul of the braking unit, the inspection department should supervise and accept its quality. The acceptance personnel will conduct random checks according to regulations, performing bench tests according to the "XFD Type Tread Braking Unit Maintenance and Testing Specification." Only after passing the inspection and completing the necessary maintenance record, test report, and certificate of conformity can the finished product be stored and installed on the vehicle.

[0003] Because the brake unit has many disassembly and repair surfaces and is quite heavy, at least two people are needed to flip the brake unit on the workbench. This is not only laborious, but the brake unit can also easily crush the workers' fingers during the flipping process, which seriously affects the efficiency of disassembling and repairing the brake unit. Summary of the Invention

[0004] In view of this, the present invention provides a brake unit flipping device and method to solve the problem that in the prior art, due to the large number of disassembly and repair surfaces of the brake unit and the heavy weight of the brake unit, at least two people are required to flip the brake unit on the workbench. This is not only laborious, but also the brake unit can easily cause crush injuries to the fingers of the workers during the flipping process, which seriously affects the work efficiency of disassembling and repairing the brake unit.

[0005] The technical solution adopted in this invention is as follows: A braking unit flipping device includes a base, a frame vertically arranged on the top of the base, a mounting seat slidably connected inside the frame, a motor on the mounting seat, a rotating shaft fixedly connected to the output end of the motor, a first placement seat fixedly connected to the rotating shaft, and a plurality of first fixing holes on the first placement seat opposite to the through holes on the braking unit. It also includes a lifting device for raising and lowering the mounting base.

[0006] In this technical solution, it should be noted that when the braking unit needs maintenance, the first placement seat is first lowered to a lower position using a lifting device. This allows workers to more easily move the braking unit onto the first placement seat. After the first placement seat is lowered, the workers place the braking unit on it, aligning the first fixing hole on the first placement seat with the through hole on the braking unit. Then, bolts are passed through the first fixing hole and the through hole, and two nuts are screwed into both ends of the bolts to secure the first placement seat and the braking unit. After the braking unit is secured, the workers then use the lifting device to raise the first placement seat to a height convenient for maintenance, and then the braking unit can be maintained. When the braking unit needs to be flipped, the motor is started, which drives the first placement seat to rotate 180 degrees. At this time, the braking unit also rotates 180 degrees, thus completing the flipping of the braking unit. In summary, in this invention, the lifting device can drive the first placement seat to rise or fall. When the first placement seat is lowered to a lower position, the staff can place the braking unit on the first placement seat with less effort. When the first placement seat is raised to a certain height, the staff can easily inspect the braking unit without having to squat down to inspect it. Furthermore, in this invention, the motor can automatically flip the braking unit on the first placement seat, eliminating the need for multiple people to work together to flip it.

[0007] Preferably, the lifting device includes a lead screw, the upper and lower ends of which are rotatably connected to the upper and lower ends of the frame, the frame is provided with a drive motor for driving the lead screw to rotate, and the mounting base is threadedly connected to the lead screw.

[0008] In this technical solution, it should be noted that the lifting device specifically includes a lead screw and a drive motor. The drive motor drives the lead screw to rotate, thereby causing the mounting base to rise or fall.

[0009] Preferably, the base is further provided with a second placement seat, which is located below the first placement seat, and the second placement seat is provided with a plurality of second fixing holes.

[0010] In this technical solution, it should be noted that when the braking unit on the first placement seat is rotated 180 degrees, the side of the braking unit that contacts the first placement seat is still blocked by the first placement seat. At this time, the operator can only remove the braking unit from the first placement seat to inspect the blocked side. However, when removing the braking unit, the operator needs to lift the braking unit to prevent it from falling, which increases the operator's workload. Based on this, the present invention provides a second placement seat. When the braking unit is rotated 180 degrees, the bottom of the braking unit contacts the second placement seat or has only a small gap. At this time, the operator only needs to remove the bolts on the first placement seat, and the braking unit can automatically fall onto the second placement seat without manual lifting of the braking unit.

[0011] Preferably, the base is provided with a slide rail, which is arranged along the width direction of the base, and the second placement seat is slidably connected to the slide rail. A connecting rope is provided on the rotating shaft, and the end of the connecting rope away from the rotating shaft is connected to the slide seat. The base is provided with a guide plate, which has a through hole, and the end of the connecting rope away from the rotating shaft passes through the through hole and connects to the bottom of the groove. The first placement seat includes a horizontal plate and a vertical plate, which are arranged vertically. The first fixing hole is located on the horizontal plate, and the end of the horizontal plate is detachably connected to the vertical plate.

[0012] In this technical solution, it should be noted that, in order to facilitate the movement of the braking unit onto the first placement seat, the first placement seat needs to be lowered to a certain position. However, during the descent of the first placement seat, the second placement seat located below it will obstruct the first placement seat, preventing it from descending to its lowest position. Therefore, this invention incorporates a connecting rope and a guide rail, allowing the position of the second placement seat to be automatically adjusted. The specific principle is as follows: Initially, the first and second placement seats are vertically aligned. Pushing the second placement seat inward causes it to shift away from the first placement seat, at which point the connecting rope is taut. The drive motor is then activated, causing the lead screw to rotate forward, lowering the mounting seat threadedly connected to the lead screw. The mounting seat then lowers the first placement seat to the initial position of the second placement seat, at which point the connecting rope is slack. The braking unit is placed on the first placement seat, aligning the first fixing hole on the first placement seat with the through hole on the braking unit. Then, the braking unit is... Bolts are passed through the first fixing hole and the through hole, and two nuts are screwed into both ends of the bolts to fix the first placement seat and the braking unit. The drive motor is started, which drives the lead screw to reverse, causing the mounting seat connected to the lead screw thread to rise to the initial position, allowing the operator to inspect the braking unit. At this time, the connecting rope returns to a taut state. When it is necessary to flip the braking unit, the motor is started, which drives the shaft to rotate, thereby causing the first placement seat to rotate. During the rotation of the shaft, the connecting rope is wound around the shaft, which in turn pulls the second placement seat below to move. After the first placement seat rotates 180 degrees, the second placement seat moves exactly below the first placement seat, and the second placement seat is in contact with or separated from the braking unit by a certain gap. At this time, the bolts and nuts on the first placement seat are released, the flipped braking unit is placed on the second placement seat, and it is fixed through the second fixing hole. The horizontal plate is removed from the vertical plate. At this time, there are no obstructions above the braking unit located at the top of the second placement seat, and the braking unit can be inspected.

[0013] Preferably, the base is provided with wheels at its bottom.

[0014] In this technical solution, it should be noted that the wheels facilitate the movement of this tooling, and the wheels have a built-in braking structure. The braking structure is existing technology and will not be discussed in detail here.

[0015] A method for flipping a braking unit, comprising: Step 1: In the initial state, the first placement seat and the second placement seat are aligned vertically. Push the second placement seat inward so that the second placement seat and the first placement seat are offset from each other. At this time, the connecting rope is taut. Step 2: Start the drive motor. The drive motor drives the lead screw to rotate forward, causing the mounting seat connected to the lead screw to descend. The mounting seat drives the first placement seat to descend to the initial position of the second placement seat. At this time, the connecting rope is in a slack state. Step 3: Place the braking unit on the first mounting base, aligning the first fixing hole on the first mounting base with the through hole on the braking unit. Then, pass a bolt through the first fixing hole and the through hole, and screw two nuts into both ends of the bolt to fix the first mounting base and the braking unit. Step 4: Start the drive motor. The drive motor drives the lead screw to reverse, causing the mounting seat connected to the lead screw to rise to the initial position. The staff can then inspect the braking unit. At this time, the connecting rope returns to a taut state. Step 5: When it is necessary to flip the brake unit, start the motor. The motor drives the rotating shaft to rotate, which in turn causes the first placement seat to rotate. During the rotation of the rotating shaft, the connecting rope is wrapped around the rotating shaft, which in turn pulls the second placement seat below to move. When the first placement seat rotates 180 degrees, the second placement seat moves exactly below the first placement seat, and the second placement seat is in contact with or separated from the brake unit by a certain gap. At this time, release the bolts and nuts on the first placement seat, place the flipped brake unit on the second placement seat, and fix it through the second fixing hole. Step 6: Remove the horizontal plate from the vertical plate. At this point, there are no obstructions above the braking unit located at the top of the second mounting seat, and the braking unit can be inspected.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the lifting device can drive the first placement seat to rise or fall. When the first placement seat falls to a lower position, the staff can place the braking unit on the first placement seat with less effort. When the first placement seat rises to a certain height, the staff can easily inspect the braking unit without having to squat down to inspect it. Secondly, in this invention, the motor can automatically flip the braking unit on the first placement seat without the need for multiple people to cooperate in flipping it. 2. In this invention, a second placement seat is provided. When the braking unit is rotated 180 degrees, the bottom of the braking unit is in contact with the second placement seat or there is only a small gap. At this time, the operator only needs to remove the bolts on the first placement seat, and the braking unit can automatically fall onto the second placement seat without manual lifting of the braking unit. 3. In this invention, it should be noted that in order to facilitate the workers to move the braking unit onto the first placement seat, the first placement seat needs to be lowered to a certain position. However, during the descent of the first placement seat, the second placement seat located below the first placement seat will block the first placement seat, preventing the first placement seat from descending to the lowest position. Based on this, this invention provides a connecting rope and a guide rail so that the position of the second placement seat can be automatically adjusted. That is, during the rotation of the first placement seat, the connecting rope will be wound around the rotating shaft, thereby automatically pulling the second placement seat below the first placement seat. Attached Figure Description

[0017] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side-view perspective view of the three-dimensional structure of the present invention; Figure 3 This is a rear-view three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the first placement base of the present invention after being rotated 180 degrees; Figure 5 This is a three-dimensional structural diagram of the mounting base and the first placement base of the present invention; Figure 6 This is a three-dimensional structural diagram of the guide plate of the present invention; Wherein: 1-base, 2-wheel, 3-frame, 4-mounting seat, 5-first placement seat, 51-horizontal plate, 52-vertical plate, 6-motor, 7-rotating shaft, 8-second placement seat, 9-slide rail, 10-connecting rope, 11-guide plate, 111-through hole, 12-first fixing hole, 13-second fixing hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. Example 1

[0024] like Figure 1-6As shown in the figure, an embodiment of the present invention discloses a braking unit flipping device, including a base 1, a frame 3 vertically arranged on the top of the base 1, a mounting seat 4 slidably connected inside the frame 3, a motor 6 provided on the mounting seat 4, a rotating shaft 7 fixedly connected to the output end of the motor 6, a first placement seat 5 fixedly connected to the rotating shaft 7, and a plurality of first fixing holes 12 provided on the first placement seat 5 opposite to the through hole on the braking unit; it also includes a lifting device for lifting the mounting seat 4. It should be noted that when the brake unit needs to be inspected, the first placement seat 5 is first lowered to a lower position using the lifting device. This allows the workers to more easily move the brake unit onto the first placement seat 5. After the first placement seat 5 is lowered, the workers place the brake unit on it, aligning the first fixing hole 12 on the first placement seat 5 with the through hole on the brake unit. Then, bolts are passed through the first fixing hole 12 and the through hole, and two nuts are screwed into both ends of the bolts to secure the first placement seat 5 and the brake unit. After the brake unit is secured, the workers then use the lifting device to raise the first placement seat 5 to a height convenient for inspection, and then the brake unit can be inspected. When the braking unit is flipped, the motor 6 is activated, which drives the first placement seat 5 to rotate 180 degrees. At this time, the braking unit also rotates 180 degrees, thus completing the flipping of the braking unit. In summary, in this invention, the lifting device can drive the first placement seat 5 to rise or fall. When the first placement seat 5 is lowered to a lower position, the staff can place the braking unit on the first placement seat 5 with less effort. When the first placement seat 5 is raised to a certain height, the staff can easily inspect the braking unit without having to squat down to inspect it. Furthermore, in this invention, the motor 6 can automatically flip the braking unit on the first placement seat 5, eliminating the need for multiple people to cooperate in the flipping.

[0025] like Figure 1 As shown, in this embodiment, the lifting device includes a lead screw, the upper and lower ends of which are rotatably connected to the upper and lower ends of the frame 3, respectively. The frame 3 is equipped with a drive motor for driving the lead screw to rotate, and the mounting base 4 is threadedly connected to the lead screw. It should be noted that the lifting device specifically includes a lead screw and a drive motor. The drive motor drives the lead screw to rotate, thereby causing the mounting base 4 to rise or fall.

[0026] like Figure 1 and Figure 3 , Figure 4As shown, in this embodiment, the base 1 is further provided with a second placement seat 8, which is located below the first placement seat 5. The second placement seat 8 is provided with several second fixing holes 13. It should be noted that when the braking unit on the first placement seat 5 is rotated 180 degrees, the side of the braking unit that contacts the first placement seat 5 is still blocked by the first placement seat 5. At this time, the operator can only remove the braking unit from the first placement seat 5 to inspect the blocked side. However, when removing the braking unit, the operator needs to lift the braking unit to prevent it from falling, which increases the operator's workload. Based on this, the present invention provides a second placement seat 8. When the braking unit is rotated 180 degrees, the bottom of the braking unit contacts the second placement seat 8 or has only a small gap. At this time, the operator only needs to remove the bolts on the first placement seat 5, and the braking unit can automatically fall onto the second placement seat 8 without manual lifting of the braking unit.

[0027] like Figure 1 and Figure 3 , Figure 4As shown, in this embodiment, the base 1 is provided with a slide rail 9, which is arranged along the width direction of the base 1, and the second placement seat 8 is slidably connected to the slide rail 9. A connecting rope 10 is provided on the rotating shaft 7, and the end of the connecting rope 10 away from the rotating shaft 7 is connected to the slide seat. A guide plate 11 is provided on the base 1, and a through hole 111 is provided on the guide plate 11. The end of the connecting rope 10 away from the rotating shaft 7 passes through the through hole 111 and connects to the bottom of the groove. The first placement seat 5 includes a horizontal plate 51 and a vertical plate 52, which are arranged vertically. The first fixing hole 12 is provided on the horizontal plate 51, and the end of the horizontal plate 51 is detachably connected to the vertical plate 52. It should be noted that, in order to facilitate the movement of the braking unit onto the first placement seat 5, the first placement seat 5 needs to be lowered to a certain position. However, during the descent of the first placement seat 5, the second placement seat 8 located below the first placement seat 5 will obstruct the first placement seat 5, preventing it from descending to its lowest position. Therefore, this invention incorporates a connecting rope 10 and a guide rail, allowing the position of the second placement seat 8 to be automatically adjusted. The specific principle is as follows: Initially, the first placement seat 5 and the second placement seat 8 are vertically aligned. Pushing the second placement seat 8 inward causes it to shift away from the first placement seat 5, at which point the connecting rope 10 is taut. The drive motor is then activated, causing the lead screw to rotate forward, lowering the mounting seat 4, which is threaded onto the lead screw. The mounting seat 4 then lowers the first placement seat 5 to the initial position of the second placement seat 8, at which point the connecting rope 10 is slack. The braking unit is placed on the first placement seat 5, aligning the first fixing hole 12 on the first placement seat 5 with the through hole on the braking unit, and then a bolt is passed through... The first fixing hole 12 and the through hole are connected, and two nuts are screwed into both ends of the bolt to fix the first placement seat 5 and the braking unit. The drive motor is started, and the drive motor drives the lead screw to reverse, so that the mounting seat 4 connected to the lead screw thread rises to the initial position, and the operator can then inspect the braking unit. At this time, the connecting rope 10 returns to a taut state. When it is necessary to flip the braking unit, the motor 6 is started, and the motor 6 drives the rotating shaft 7 to rotate, which in turn causes the first placement seat 5 to rotate. During the rotation of the rotating shaft 7, the connecting rope 10 is wrapped around the rotating shaft 7, which in turn pulls the second placement seat 8 below to move. When the first placement seat 5 rotates 180 degrees, the second placement seat 8 moves exactly below the first placement seat 5, and the second placement seat 8 is in contact with or separated from the braking unit by a certain gap. At this time, the bolts and nuts on the first placement seat 5 are released, the flipped braking unit is placed on the second placement seat 8, and it is fixed through the second fixing hole 13. The horizontal plate 51 is removed from the vertical plate 52. At this time, there are no obstructions above the braking unit located at the top of the second placement seat 8, and the braking unit can be inspected.

[0028] like Figure 1As shown, in this embodiment, the bottom of the base 1 is provided with wheels 2. It should be noted that the wheels 2 facilitate the movement of this tooling, and the wheels 2 have a built-in braking structure. The braking structure is existing technology and will not be described in detail here. Example 2

[0029] This embodiment proposes a method for flipping a braking unit, including: Step 1: In the initial state, the first placement seat 5 and the second placement seat 8 are aligned vertically. Push the second placement seat 8 inward so that the second placement seat 8 and the first placement seat 5 are offset from each other. At this time, the connecting rope 10 is in a taut state. Step 2: Start the drive motor. The drive motor drives the lead screw to rotate forward, causing the mounting seat 4, which is threadedly connected to the lead screw, to descend. The mounting seat 4 drives the first placement seat 5 to descend to the initial position of the second placement seat 8. At this time, the connecting rope 10 is in a slack state. Step 3: Place the braking unit on the first mounting base 5, aligning the first fixing hole 12 on the first mounting base 5 with the through hole on the braking unit. Then, pass a bolt through the first fixing hole 12 and the through hole, and screw two nuts into both ends of the bolt to fix the first mounting base 5 and the braking unit. Step 4: Start the drive motor. The drive motor drives the lead screw to reverse, causing the mounting seat 4, which is threadedly connected to the lead screw, to rise to the initial position. The staff can then inspect the braking unit. At this time, the connecting rope 10 returns to a taut state. Step 5: When it is necessary to flip the brake unit, start the motor 6. The motor 6 drives the rotating shaft 7 to rotate, which in turn causes the first placement seat 5 to rotate. During the rotation of the rotating shaft 7, the connecting rope 10 is wrapped around the rotating shaft 7, which in turn pulls the second placement seat 8 below to move. When the first placement seat 5 rotates 180 degrees, the second placement seat 8 moves exactly below the first placement seat 5, and the second placement seat 8 is in contact with or separated from the brake unit by a certain gap. At this time, release the bolts and nuts on the first placement seat 5, place the flipped brake unit on the second placement seat 8, and fix it through the second fixing hole 13. Step 6: Remove the horizontal plate 51 from the vertical plate 52. At this time, there are no obstructions above the braking unit located at the top of the second placement seat 8, and the braking unit can be inspected.

[0030] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The scope of protection of this invention does not involve any improvement to the software and methods.

[0031] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A braking unit flipping device, characterized in that, Includes a base (1), a frame (3) is vertically arranged on the top of the base (1), a mounting seat (4) is slidably connected inside the frame (3), a motor (6) is provided on the mounting seat (4), a rotating shaft (7) is fixedly connected to the output end of the motor (6), a first placement seat (5) is fixedly connected to the rotating shaft (7), and the first placement seat (5) is provided with a plurality of first fixing holes (12) opposite to the through holes on the braking unit; It also includes a lifting device for raising and lowering the mounting base (4); The base (1) is also provided with a second placement seat (8), which is located below the first placement seat (5). The second placement seat (8) is provided with a plurality of second fixing holes (13). The base (1) is provided with a slide rail (9), which is arranged along the width direction of the base (1), and the second placement seat (8) is slidably connected to the slide rail (9); The rotating shaft (7) is provided with a connecting rope (10), and one end of the connecting rope (10) away from the rotating shaft (7) is connected to the second placement seat (8).

2. The braking unit flipping device according to claim 1, characterized in that, The lifting device includes a lead screw, the upper and lower ends of which are rotatably connected to the upper and lower ends of the frame (3), the frame (3) is provided with a drive motor for driving the lead screw to rotate, and the mounting base (4) is threadedly connected to the lead screw.

3. The braking unit flipping device according to claim 1, characterized in that, The base (1) is provided with a guide plate (11), and the guide plate (11) is provided with a through hole (111). The end of the connecting rope (10) away from the rotating shaft (7) passes through the through hole (111).

4. The braking unit flipping device according to claim 1, characterized in that, The base (1) is provided with wheels (2) at its bottom.

5. A braking unit flipping device according to claim 1, characterized in that, The first placement seat (5) includes a horizontal plate (51) and a vertical plate (52), which are arranged vertically. The first fixing hole (12) is provided on the horizontal plate (51), and the end of the horizontal plate (51) is detachably connected to the vertical plate (52).

6. A method for flipping a braking unit, employing a braking unit flipping device according to any one of claims 1-5, characterized in that, include: Step 1: In the initial state, the first placement seat (5) and the second placement seat (8) are aligned vertically. Push the second placement seat (8) inward so that the second placement seat (8) and the first placement seat (5) are misaligned. At this time, the connecting rope (10) is in a taut state. Step 2: Start the drive motor. The drive motor drives the lead screw to rotate forward, causing the mounting seat (4) connected to the lead screw to descend. The mounting seat (4) drives the first placement seat (5) to descend to the initial position of the second placement seat (8). At this time, the connecting rope (10) is in a slack state. Step 3: Place the braking unit on the first mounting base (5) and align the first fixing hole (12) on the first mounting base (5) with the through hole on the braking unit. Then, pass the bolt through the first fixing hole (12) and the through hole, and screw two nuts into both ends of the bolt to fix the first mounting base (5) and the braking unit. Step 4: Start the drive motor. The drive motor drives the lead screw to reverse, so that the mounting seat (4) connected to the lead screw thread rises to the initial position. The staff can then inspect the braking unit. At this time, the connecting rope (10) returns to a taut state. Step 5: When it is necessary to flip the brake unit, start the motor (6). The motor (6) drives the rotating shaft (7) to rotate, which in turn causes the first placement seat (5) to rotate. During the rotation of the rotating shaft (7), the connecting rope (10) is wrapped around the rotating shaft (7), which in turn pulls the second placement seat (8) below to move. When the first placement seat (5) rotates 180 degrees, the second placement seat (8) moves exactly below the first placement seat (5), and the second placement seat (8) is in contact with or separated from the brake unit by a certain gap. At this time, release the bolts and nuts on the first placement seat (5), place the flipped brake unit on the second placement seat (8), and fix it through the second fixing hole (13). Step 6: Remove the horizontal plate (51) from the vertical plate (52). At this time, there are no obstructions above the braking unit located at the top of the second placement seat (8), so the braking unit can be inspected.

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