Power supply device for debugging power supply of electric locomotive

Abstract

The invention relates to the technical field of equipment debugging, in particular to a power supply device for a debugging power supply of an electric locomotive, which is simple in structure, a collecting box can be quickly dismounted when a power supply body is dismounted, the power supply body can be fixed in front, back, left and right directions, and the fixing effect is better; comprising a collecting box and a bottom plate with walking wheels, a power source body is installed on the bottom plate, and a cooling fan is fixed to the bottom plate through stand columns; a groove is formed in the collecting box, the top end of the stand column extends into the groove, vertical plates are fixed to the two sides of the bottom plate, a first through hole and a second through hole are formed in the vertical plates, the first through hole is vertical, and the second through hole comprises a first vertical section and a first arc section; a first moving shaft and a second moving shaft are fixed to the two sides of the collecting box, the first moving shaft penetrates through the first through hole, and the second moving shaft penetrates through the second through hole; the driving mechanism is used for driving the moving shaft II to move along the through hole II; and the limiting assembly is used for fixing the power supply body.

Description

Technical Field

[0001] The invention relates to the technical field of equipment debugging, and in particular to a power supply device for debugging a power supply of an electric locomotive. Background Art

[0002] The application number is: 202122703402.6, which discloses a power supply device for electric locomotives in the depot and for debugging, including a base, the four corners of the top surface of the base are fixedly connected with uprights, the outsides of the four uprights are slidably connected with sliding seats, the insides of the four outer sides of the sliding seats are provided with rotating wheels, and the four rotating wheels are respectively threadedly connected with the four uprights. The advantages of the utility model are: uprights are fixedly connected with uprights at the four corners of the top surface of the base, sliding seats are sleeved on the outsides of the four uprights, rotating wheels are provided inside the sliding seats, the rotating wheels are threadedly connected with the uprights, and a fan is provided between the two groups of sliding seats. At the same time, a power supply body is provided in the middle of the top surface of the base. When in use, since the power supply body is exposed to the outside, it is convenient for users to connect, and the position of the fan is adjusted so that it has a better heat dissipation effect on the power supply body, meeting the needs of actual use.

[0003] The following deficiencies were found during use of the above device: the collection box is fixedly mounted on the top of the device, and the power supply body itself is relatively heavy. When a failure occurs in the power supply body, since the position of the collection box is fixed, only one person can push it on one side and the other person can pull it on the other side. In addition, the device needs to be locked to prevent the power supply body from moving during the pushing process, which brings inconvenience to the user. In addition, the power supply body is only fixed in the left and right directions. During the movement, the power supply body may not be firmly fixed, resulting in misalignment of the power supply body. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a power supply device for debugging power supply of electric locomotive, which has a simple structure. When the power supply body is disassembled, the collection box can be quickly removed, and the power supply body can be fixed in the front, back, left and right directions, with a better fixing effect.

[0005] The invention discloses a power supply device for debugging power supply of electric locomotive, comprising a collection box and a bottom plate with running wheels, the bottom plate is provided with a power supply body, and a cooling fan is fixed to the bottom plate through a column; a groove is provided in the collection box, and the top of the column extends into the groove, and vertical plates are fixed on both sides of the bottom plate, and a through hole 1 and a through hole 2 are provided on the vertical plates, the through hole 1 is vertical, and the through hole 2 comprises a vertical section 1 and a circular arc section 1;

[0006] A moving shaft 1 and a moving shaft 2 are fixed on both sides of the collecting box, the moving shaft 1 passes through the through hole 1, and the moving shaft 2 passes through the through hole 2;

[0007] Also included is a driving mechanism for driving the second moving shaft to move along the second through hole;

[0008] It also includes a limiting component for fixing the power supply body.

[0009] The present invention is further improved, the collection box is slidably provided with a drawer and a slider, one end of the slider is fixed with a cover plate, and the other end of the slider is fixed with a fixed shaft 1;

[0010] A movable plate is slidably mounted on the collecting box, and a through hole 3 is formed on the movable plate. The through hole 3 includes an inclined section 1, and a fixed shaft 1 passes through the through hole 3.

[0011] The movable plate is provided with a through hole four, the through hole four includes an inclined section two, and a fixed shaft two is fixed on the vertical plate, and the fixed shaft two passes through the through hole four.

[0012] The present invention is further improved, and the through hole four also includes a vertical section two and a vertical section three which are respectively connected to the inclined section two at the ends, and an arc section two which is connected to the vertical section three.

[0013] The present invention is further improved, where the through hole three also includes a horizontal section one and a horizontal section two which are connected to the inclined section at one end and the other end respectively.

[0014] The present invention is further improved, the limit assembly includes a screw rod 1 symmetrically rotatably mounted on the base plate, the screw rod 1 is threadedly connected to a clamping plate 1, two screw rods 2 are rotatably mounted on the clamping plate 1, and each screw rod 2 is threadedly connected to a clamping plate 2.

[0015] The present invention is further improved, the driving mechanism comprises a rotating shaft rotatably mounted on two vertical plates, one end of a swing arm 1 is fixed at both ends of the rotating shaft, one end of a swing arm 2 is rotatably mounted at the other end of the swing arm 1, and the other end of the swing arm 2 is rotatably connected to the moving shaft 2;

[0016] The driving mechanism also includes an oil cylinder fixed on one of the vertical plates, a rack is fixed on the output end of the oil cylinder, and a gear meshing with the rack is fixed on one end of the rotating shaft.

[0017] The present invention is further improved in that the bottom plate is installed with a wire drum 1 and a wire drum 2, and the wire drum 1 is driven by a motor to reel in and release the wire, and a handle is fixed on the bottom plate, and a handle for controlling the start and stop of the motor is installed on the handle.

[0018] The present invention is further improved in that the bottom of the cover plate is provided with a pressing pad.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the device can flip the collection box to increase the space for disassembling and assembling the power source body, and can also fix the power source body in the front, back, left and right directions to prevent displacement during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 yes Figure 1 Stereoscopic image of

[0022] Figure 3 yes Figure 2 A partial enlarged view of the middle A part;

[0023] Figure 4 yes Figure 2 Schematic diagram of the structure after hiding some components;

[0024] Figure 5 yes Figure 4 A partial enlarged view of the middle B part;

[0025] Figure 6 It is a schematic diagram of the structure of the base plate, the screw rod 1 and the screw rod 2;

[0026] Markings in the attached figure: 1, collection box; 2, bottom plate; 3, power supply body; 4, column; 5, cooling fan; 6, limit ring; 7, vertical plate; 8, through hole 1; 9, vertical section 1; 10, arc section 1; 11, moving axis 1; 12, moving axis 2; 13, roller; 14, drawer; 15, slider; 16, cover plate; 17, fixed axis 1; 18, moving plate; 19, track; 20, tilting section 1; 21, Inclined section two; 22, fixed axis two; 23, vertical section two; 24, vertical section three; 25, arc section two; 26, horizontal section one; 27, horizontal section two; 28, screw rod one; 29, clamping plate one; 30, screw rod two; 31, clamping plate two; 32, rotating shaft; 33, swing arm one; 34, swing arm two; 35, oil cylinder; 36, rack; 37, gear; 38, wire drum one; 39, wire drum two; 40, handle. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 6As shown, a power supply device for debugging power supply of an electric locomotive of the present invention comprises a collection box 1 and a bottom plate 2 with running wheels, a power source body 3 is installed on the bottom plate 2, and a cooling fan 5 is fixed to the bottom plate 2 through four vertical columns 4. There are four cooling fans 5, which are distributed on both sides of the power source body 3. When in use, the cooling fans 5 work at the same time, so that forced convection occurs around the power source body 3 to cool the power source body 3; grooves are provided at the four corners of the collection box 1, and the top of the column 4 extends into the groove. In order to limit the collection box 1, a limiting ring 6 is fixed on the column 4, and the limiting ring 6 contacts the bottom of the collection box 1;

[0030] like Figures 1 to 3 As shown, vertical plates 7 are fixed on both sides of the bottom plate 2, and through holes 1 8 and 2 are provided on the vertical plates 7. The through hole 1 8 is vertical, and the through hole 2 includes a vertical section 1 9 and an arc section 10, and the center of the arc section 10 is concentric with the center of the top of the through hole 1 8;

[0031] A moving shaft 11 and a moving shaft 2 12 are fixed on both sides of the collecting box 1. The moving shaft 11 passes through the through hole 1 8, and the moving shaft 2 12 passes through the through hole 2. In order to prevent the moving shaft 11 and the moving shaft 2 12 from changing their positions relative to the vertical plate 7, bearings are installed on the moving shaft 11 and the moving shaft 2 12. The outer ring of the bearing is fixed with a roller 13, and the roller 13 is stuck in the through hole 1 8 or the through hole 2.

[0032] Also includes a driving mechanism for driving the second moving shaft 12 to move along the second through hole;

[0033] It also includes a limiting component for fixing the power supply body 3;

[0034] In this embodiment, if Figure 1-Figure 3 As shown, when the power source body 3 needs to be dismantled, the driving mechanism is operated to move the moving shaft 12 along the through hole 2, and the moving shaft 12 passes through the vertical section 19 and the arc section 10 in turn. Since the moving shaft 12 and the moving shaft 11 are both fixed on the collection box 1, the moving shaft 11 also moves upward along the through hole 8 during the upward movement of the moving shaft 12 along the vertical section 9, so that the collection box 1 is first separated from the column 4. When the moving shaft 11 moves to the top of the through hole 8, the moving shaft 12 simultaneously moves to the starting end of the arc section 10, and The center of the arc segment 10 is concentric with the center of the top of the through hole 18, so the movable shaft 2 12 can rotate around the arc segment 10. During this process, the position of the movable shaft 11 remains unchanged, so the movable shaft 2 12, the collection box 1, etc. all rotate around the movable shaft 11. When the movable shaft 2 12 reaches the other end of the arc segment 10, the angle of the collection box 1 reaches the maximum. At this time, there is no obstruction above the power source body 3. When the power source body 3 needs to be removed, one person stands on each side of the power source body 3 to lift the power source body 3 or a lifting machine is used to lift it.

[0035] After disassembly and assembly are completed, operate the driving mechanism to move the movable shaft 12 along the arc segment 10 and the vertical segment 9 successively. During the movement along the arc segment 10, the collection box 1 rotates. During the movement along the vertical segment 9, the collection box 1 moves vertically downward, and the column 4 is gradually inserted into the groove of the collection box 1 until the collection box 1 contacts the limit ring 6, and then stop the driving mechanism.

[0036] The present invention is further improved as follows: Figure 1 As shown, the collection box 1 slides with a drawer 14 and a slider 15, and the drawer 14 can be pulled relative to the collection box 1. When in use, the tools are placed in the drawer 14, and the slider 15 slides on the top of the collection box 1. A cover plate 16 is fixed to one end of the slider 15. As shown in the figure, the collection box 1 is in a normal use state, and the cover plate 16 is at a certain distance from the drawer 14. The tools in the drawer 14 can be used by holding the handle of the drawer 14 and pulling out the drawer 14. When the collection box 1 is turned over, the tools in the drawer 14 will also turn over. If there is no cover plate 16 to press them, the tools in the drawer 14 will be misplaced. Therefore, the cover plate 16 is provided. When the collection box 1 rises, the cover plate 16 can be pressed down into the drawer 14 to press the tools in the drawer 14, so that there will be no significant misplacement.

[0037] The other end of the slider 15 is fixed with a fixed shaft 17;

[0038] A movable plate 18 is slidably mounted on the collecting box 1. The movable plate 18 slides on a track 19 at the top of the collecting box 1. The movable plate 18 is provided with a through hole 3. The through hole 3 includes an inclined section 1 20. The fixed shaft 17 passes through the through hole 3. Figure 2 , Figure 3 and Figure 5 As shown, when the movable plate 18 moves to the left along the track 19, the inclined section 1 20 moves relative to the fixed axis 17, so the slider 15 and the cover plate 16 move downward;

[0039] The movable plate 18 is provided with a through hole 4, the through hole 4 includes an inclined section 21, a fixed shaft 22 is fixed on the vertical plate 7, and the fixed shaft 22 passes through the through hole 4. Figure 3 and Figure 5 As shown, during the vertical upward movement of the collecting box 1, the collecting box 1 and the movable plate 18 both move upward relative to the fixed axis 22. When the inclined section 21 passes through the fixed axis 22, the movable plate 18 moves vertically upward and to the left at the same time, thereby causing the slider 15 and the cover plate 16 to move downward.

[0040] The present invention is further improved as follows: Figure 5 As shown, the through hole 4 further includes a vertical section 23 and a vertical section 3 24 respectively connected to the inclined section 21 end to end, and an arc section 25 connected to the vertical section 3 24;

[0041] In this embodiment, if Figure 5 As shown, the fixed shaft 22 is on the vertical section 23, and in the process of the vertical upward movement of the movable plate 18 and the collecting box 1, the fixed shaft 22 will successively pass through the vertical section 23, the inclined section 21 and the vertical section 3 24. Since the moving track of the movable plate 18 is vertical during this process, the fixed shaft 22 will not affect the position of the movable plate 18 when passing through the vertical section 23 and the vertical section 3 24, that is, it will move to the left in the middle of the rising process of the movable plate 18. The purpose of this setting is to improve the fault tolerance rate and reduce the influence of the size of the inclined section 21 on the moving amplitude of the movable plate 18;

[0042] In order to better adapt to the fixed shaft 22, when the collection box 1 drives the movable plate 18 to rotate, the fixed shaft 22 moves along the arc segment 25, and at this time, the arc segment 25 and the collection box 1 rotate around the same axis.

[0043] The present invention is further improved as follows: Figure 3 As shown, the through hole three also includes a horizontal section 1 26 and a horizontal section 27 connected end to end with the inclined section 1 20 respectively;

[0044] In this embodiment, if Figure 3 As shown, during the movement of the movable plate 18 to the left, the fixed axis 17 passes through the horizontal section 1 26, the inclined section 1 20 and the horizontal section 2 27 in succession. Since the moving trajectory of the movable plate 18 is horizontal, when the fixed axis passes through the horizontal section 1 26 and the horizontal section 2 27, it will not affect the height of the slider 15 and the fixed axis. In other words, the slider 15 will not move downward until the middle stage of the movement of the movable plate 18 to the left. The purpose of this arrangement is to improve the fault tolerance rate and reduce the influence of the size of the inclined section 20 on the movement amplitude of the slider 15.

[0045] The present invention is further improved as follows: Figure 6 As shown, the limit assembly includes a screw rod 28 symmetrically rotatably mounted on the base plate 2, the screw rod 28 is threadedly connected to a clamping plate 29, the clamping plate 29 is slidably connected to the base plate 2, two screw rods 30 are rotatably mounted on the clamping plate 29, each screw rod 30 is threadedly connected to a clamping plate 31, and the clamping plate 31 is slidably connected to the clamping plate 29;

[0046] In this embodiment, after the power supply body 3 is placed on the base plate 2, the screw rod 28 is first rotated to make the clamping plate 29 clamp the power supply body 3, and then the screw rod 2 30 is rotated to make the clamping plate 2 31 clamp the other two side surfaces of the power supply body 3, thereby limiting the power supply body 3 in the front, back, left and right directions, and achieving a better fixing effect.

[0047] The present invention is further improved as follows: Figure 1 and Figure 3 As shown, the driving mechanism includes a rotating shaft 32 rotatably mounted on two vertical plates 7, one end of a swing arm 1 33 is fixed at both ends of the rotating shaft 32, one end of a swing arm 2 34 is rotatably mounted at the other end of the swing arm 1 33, and the other end of the swing arm 2 34 is rotatably connected to the moving shaft 2 12;

[0048] The driving mechanism further includes an oil cylinder 35 fixed on one of the vertical plates 7, a rack 36 is fixed to the output end of the oil cylinder 35, and a gear 37 meshing with the rack 36 is fixed to one end of the rotating shaft 32;

[0049] In this embodiment, if Figure 1 As shown, when the power source body 3 needs to be removed, the oil cylinder 35 is operated to move the rack 36 to the left, thereby driving the gear 37, the rotating shaft 32 and the swing arm 1 33 to rotate clockwise. Since the two ends of the swing arm 2 34 are respectively rotatably connected to the rotating shaft 32 and the swing arm 1 33, the movable shaft 2 12 will be pushed to move along the through hole 2.

[0050] The present invention is further improved as follows: Figure 2 As shown, the bottom plate 2 is installed with a wire drum 1 38 and a wire drum 2 39, and the wire drum 1 38 is driven by a motor to reel in and release the wire. A handle is fixed on the bottom plate 2, and a handle 40 for controlling the start and stop of the motor is installed on the handle;

[0051] In this embodiment, the power supply body 3 is a rectifier system that can convert a 380V three-phase AC power supply into a 600V DC power supply. The 380V three-phase AC power line is wound on the wire reel 1 38, and the 600V DC power line is wound on the wire reel 2 39. The 380V three-phase AC power line is relatively long, which can reduce line loss. When in use, one end of the 380V three-phase AC power line on the wire reel 1 38 is connected to the 380V three-phase AC power system in the distribution room, the wire reel 1 38 is connected to the power supply body 3 through the 380V three-phase AC power line and a plug, the power supply body 3 is connected to the wire reel 2 39 through the 600V DC power line and a plug, and the 600V DC power line on the wire reel 2 39 is connected to the electric locomotive to be tested. During the movement of the device, since the 380V three-phase AC power line is relatively long, a handle 40 is used to control the motor, thereby controlling the retraction and extension of the 380V three-phase AC power line, which is more convenient to use.

[0052] Further, the bottom of the cover plate 16 is provided with a compression pad;

[0053] In this embodiment, the compression pad may be a sponge that can adapt to the shape of the tool.

[0054] When the present invention is in use, the power supply body 3 is a rectifier system that can convert a 380V three-phase AC power supply into a 600V DC power supply. The 380V three-phase AC power line is wound on the wire reel 1 38, and the 600V DC power line is wound on the wire reel 2 39. The 380V three-phase AC power line is relatively long, which can reduce line loss. When in use, one end of the 380V three-phase AC power line on the wire reel 1 38 is connected to the 380V three-phase AC power system in the power distribution room, the wire reel 1 38 is connected to the power supply body 3 through the 380V three-phase AC power line and a plug, the power supply body 3 is connected to the wire reel 2 39 through the 600V DC power line and a plug, and the 600V DC power line on the wire reel 2 39 is connected to the electric locomotive to be tested. During the movement of the device, since the 380V three-phase AC power line is relatively long, a handle 40 is used to control the motor, thereby controlling the retraction and extension of the 380V three-phase AC power line.

[0055] When the power source body 3 needs to be dismantled, the oil cylinder 35 is operated to move the rack 36 to the left. Under the action of the swing arm 1 33 and the swing arm 2 34, the movable shaft 2 12 moves along the through hole 2. The movable shaft 2 12 passes through the vertical section 1 9 and the arc section 10 in succession. Since the movable shaft 2 12 and the movable shaft 11 are both fixed on the collection box 1, during the process of the movable shaft 2 12 moving upward along the vertical section 1 9, the movable shaft 11 also moves upward along the through hole 1 8, so that the collection box 1 first separates from the column 4. During the vertical upward movement of the collection box 1, the collection box 1 and the movable plate 18 both move upward relative to the fixed shaft 2 22. When the inclined section 21 passes through the fixed shaft 22, the movable plate 18 moves vertically upward and to the left at the same time. Under the left and right of the inclined section 1 20 and the fixed shaft 17, the slider 15 and the cover plate 16 move downward. The cover plate 16 and the pressing pad cover the tools in the drawer 14 to prevent them from being misaligned during rotation.

[0056] When the movable shaft 11 moves to the top of the through hole 18, the movable shaft 2 12 simultaneously moves to the starting end of the arc segment 10, and the center of the arc segment 10 is concentric with the center of the top of the through hole 8, so the movable shaft 2 12 can rotate around the arc segment 10. During this process, the position of the movable shaft 11 remains unchanged, so the movable shaft 2 12, the collection box 1, etc. all rotate around the movable shaft 11. When the movable shaft 2 12 reaches the other end of the arc segment 10, the angle of the collection box 1 reaches the maximum. During the above process, the fixed shaft 22 moves relative to the arc segment 25. At this time, there is no obstruction above the power supply body 3. When the power supply body 3 needs to be removed, one person stands on each side of the power supply body 3 to lift the power supply body 3 or a lifting machine is used for lifting.

[0057] After disassembly and assembly are completed, operate the oil cylinder 35 to move the movable shaft 12 along the arc segment 10 and the vertical segment 9 successively. During the movement along the arc segment 10, the collecting box 1 rotates. During the movement along the vertical segment 9, the collecting box 1 moves vertically downward, and the column 4 is gradually inserted into the groove of the collecting box 1 until the collecting box 1 contacts the limit ring 6, and then stop the oil cylinder 35.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A power supply device for debugging power supply of electric locomotive, comprising a collection box and a bottom plate with running wheels, the bottom plate is installed with a power supply body, and the bottom plate is fixed with a cooling fan through a column; characterized in that, The collection box is provided with a groove, the top of the column extends into the groove, vertical plates are fixed on both sides of the bottom plate, through hole 1 and through hole 2 are provided on the vertical plates, through hole 1 is vertical, and through hole 2 includes vertical section 1 and arc section 1; A moving shaft 1 and a moving shaft 2 are fixed on both sides of the collecting box, the moving shaft 1 passes through the through hole 1, and the moving shaft 2 passes through the through hole 2; Also included is a driving mechanism for driving the second moving shaft to move along the second through hole; It also includes a limiting component for fixing the power supply body.

2. A power supply device for debugging power supply of electric locomotive as claimed in claim 1, characterized in that: The collection box is provided with a drawer and a slide block, a cover plate is fixed to one end of the slide block, and a fixed shaft 1 is fixed to the other end of the slide block; A movable plate is slidably mounted on the collecting box, and a through hole 3 is formed on the movable plate. The through hole 3 includes an inclined section 1, and a fixed shaft 1 passes through the through hole 3. The movable plate is provided with a through hole four, the through hole four includes an inclined section two, and a fixed shaft two is fixed on the vertical plate, and the fixed shaft two passes through the through hole four.

3. A power supply device for debugging power supply of electric locomotive as claimed in claim 2, characterized in that: The through hole four also includes a vertical section two and a vertical section three which are respectively connected to the inclined section two at the ends, and an arc section two which is connected to the vertical section three.

4. A power supply device for debugging power supply of electric locomotive as claimed in claim 3, characterized in that: The through hole three also includes a horizontal section one and a horizontal section two which are connected to the inclined section from end to end respectively.

5. A power supply device for debugging power supply of electric locomotive as claimed in claim 4, characterized in that: The limit assembly comprises a screw rod 1 symmetrically rotatably mounted on the bottom plate, the screw rod 1 is threadedly connected to a clamping plate 1, two screw rods 2 are rotatably mounted on the clamping plate 1, and each screw rod 2 is threadedly connected to a clamping plate 2.

6. A power supply device for debugging power supply of electric locomotive as claimed in claim 5, characterized in that: The driving mechanism comprises a rotating shaft rotatably mounted on two vertical plates, one end of a swing arm 1 is fixed at both ends of the rotating shaft, one end of a swing arm 2 is rotatably mounted at the other end of the swing arm 1, and the other end of the swing arm 2 is rotatably connected to the moving shaft 2; The driving mechanism also includes an oil cylinder fixed on one of the vertical plates, a rack is fixed on the output end of the oil cylinder, and a gear meshing with the rack is fixed on one end of the rotating shaft.

7. A power supply device for debugging power supply of electric locomotive as claimed in claim 6, characterized in that: The bottom plate is equipped with a wire drum 1 and a wire drum 2, and the wire drum 1 is driven by a motor to reel in and release the wire. A handle is fixed on the bottom plate, and a handle for controlling the start and stop of the motor is installed on the handle.

8. The power supply device for debugging power supply of electric locomotive according to claim 7, characterized in that: The bottom of the cover has a hold-down pad.

Images