A cable storage device for commissioning test of urban rail vehicle

Abstract

The utility model relates to a kind of cable storage device for urban rail vehicle debugging test, including base, support frame, carousel assembly and drive mechanism, the support frame is installed on base, carousel assembly and drive mechanism are installed on support frame, the drive mechanism drives carousel assembly to rotate reversely, the carousel assembly includes the transverse rotary drum and the two turntables of installation in rotary drum both ends, cable is wound on the outer surface of rotary drum, there is recessed accommodating cavity on the rotary drum, fixed clamp is installed in the accommodating cavity, cable end is fixed by fixed clamp and the plug of end installation is placed in the accommodating cavity. The utility model can greatly improve work efficiency while ensuring cable storage, and can make cable winding more neat.

Description

Technical Field

[0001] This utility model relates to the field of urban rail vehicle commissioning and testing equipment technology, and in particular to a cable storage device for urban rail vehicle commissioning and testing. Background Technology

[0002] After assembly, urban rail vehicles need to undergo static testing, including electrical and braking tests, in the testing workshop to ensure their normal operation. Static testing includes verifying the correct connections of traction, braking, and grounding system circuits, the correctness of logic commands, the normality of communication, and the proper functioning of auxiliary electrical functions such as doors.

[0003] At the site of static commissioning tests for urban rail vehicles, the external DC 110V (or DC 24V) power supply to the vehicle needs to be tested. The DC 110V (or DC 24V) power supply cabinet connects to a plug box located below the track, and from the plug box, a DC 110V (or DC 24V) power cable is connected to the vehicle to supply power. The DC power cable is typically 40m to 50m long, with a wire diameter of 25mm. One end of the cable is equipped with an aviation plug structure, and the other end has a crimp terminal. To prevent cable wear, two cables are wrapped together with rubber and secured with cable ties at intervals during the test.

[0004] When not conducting vehicle testing, power cables need to be neatly stored to maintain a clean work environment. Currently, cable storage at the dispatching and testing site is done by two workers: one lays the cables out to avoid tangling, the other pulls the cables while the other coils them, and finally places them on a tray for storage. This method of cable storage is time-consuming and labor-intensive, with low efficiency. Moreover, after coiling, especially for cables with terminals or connectors at the ends, the cables are more prone to becoming untidy and loose. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a cable storage device for urban rail vehicle commissioning and testing that can significantly improve work efficiency and make the cables more neatly wound while ensuring cable storage.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A cable storage device for urban rail vehicle commissioning and testing includes a base, a support frame, a turntable assembly, and a drive mechanism. The support frame is mounted on the base, and the turntable assembly and drive mechanism are mounted on the support frame. The drive mechanism drives the turntable assembly to rotate in both directions. The turntable assembly includes a horizontally placed rotating cylinder and two turntables mounted at both ends of the rotating cylinder. The cable is wound around the outer surface of the rotating cylinder. The rotating cylinder has a recessed receiving cavity. A fixing clamp is installed in the receiving cavity. The end of the cable is clamped and fixed by the fixing clamp, and the plug installed at the end is placed in the receiving cavity.

[0008] Furthermore, the accommodating cavity and the fixing clamp are disposed at one end of the rotating drum.

[0009] Furthermore, the fixing clamp includes a fixing plate, a clamping plate, a mounting base, and two screws. The fixing plate and the mounting base are fixed to the wall of the accommodating cavity. A handle is installed at one end of each screw. The other end of the screw passes through the mounting base and is fixedly connected to the clamping plate. The screw is threadedly connected to the mounting base. Rotating the handle causes the clamping plate to move toward or away from the fixing plate, thereby clamping or releasing the cable.

[0010] Furthermore, the distance L1 between the screw shaft centerline and the drum shaft centerline near the outlet end is greater than the distance L2 between the screw shaft centerline and the drum shaft centerline near the plug end.

[0011] Furthermore, the rotating drum consists of a central cylinder and end plates at both ends, and the turntable consists of a rotating ring and multiple connecting parts. One end of each connecting part is fixedly connected to the rotating ring, and the other end of each connecting part is fixed to the corresponding end plate. The diameter of the end plate is greater than or equal to the outer diameter of the cylinder.

[0012] Furthermore, a connection structure is provided between the connector and the end plate;

[0013] The connection structure includes a slot provided at the end of the connector, which is engaged with the end plate and fixed by welding;

[0014] Alternatively, the connection structure includes a protrusion that protrudes radially outward along the outer periphery of the end plate and a slot on the connector, wherein the protrusion is inserted into the slot and fixed by welding.

[0015] Furthermore, the connector adopts a U-shaped cross-section structure, which is formed by bending a metal plate. The slot is formed by utilizing the space enclosed by the U-shaped structure, or the notch is formed by opening on both sides of the U-shaped structure.

[0016] Furthermore, the support frame consists of two trapezoidal support plates, which are installed in parallel on the base, and the turntable frame assembly is installed between the two support plates.

[0017] Furthermore, the drive mechanism includes a motor, a reducer, and a frequency converter control box. The output end of the reducer is fixedly connected to the rotating shaft, the rotating shaft is fixedly connected to the rotating drum, and the motor, reducer, and frequency converter control box are fixed on one of the support frames. The motor, reducer, and frequency converter control box are electrically connected.

[0018] In summary, the cable storage device for railway vehicle commissioning and testing provided by this utility model has the following advantages compared with the prior art:

[0019] (1) This utility model can electrically store cables, which improves the efficiency of operators in storing cables in the track, thereby improving the efficiency of debugging and testing operations.

[0020] (2) When storing, this utility model can conveniently place the plug and the fixing point of the cable inside the receiving cavity of the rotating drum, without protruding from the outside of the rotating drum, so that the cable can be neatly wrapped on the outer surface of the rotating drum.

[0021] (3) This utility model clamps the end of the cable with a fixing clamp, which can be used for electric storage of cables of different diameters and has strong versatility.

[0022] (4) The motor in the drive mechanism of this utility model is equipped with a reducer and a frequency converter control box. When controlling forward and reverse rotation, the motor can start smoothly and stop when controlling stop, thus avoiding the motor from freely sliding to stop.

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0025] In the attached diagram:

[0026] Figure 1 This is a schematic diagram of the structure of the storage device of this utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of the storage device of this utility model. Figure 2 ;

[0028] Figure 3 This is a longitudinal sectional view of the storage device of this utility model;

[0029] Figure 4 yes Figure 2 Top view;

[0030] Figure 5 yes Figure 4 AA sectional view.

[0031] In the picture:

[0032] Cable 1, Airplane plug 2, Base 3, Support frame 4, Support plate 41, Turntable frame assembly 5, Rotary cylinder 51, Cylinder body 511, End plate 512, Turntable 52, Rotary ring 521, Connector 522, Accommodating cavity 53, Connecting structure 54, Slot 541, Drive mechanism 6, Motor 61, Reducer 62, Variable frequency control box 63, Rotating shaft 64, Bearing 65, Bearing seat 66, Fixing clamp 7, Fixing plate 71, Clamping plate 72, Mounting seat 73, Screw 74, Handle 75, Protective cover 8, Bolt 9, Fixing sleeve 10, Connecting arm 11, Mounting plate 12.

[0033] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] like Figures 1 to 5As shown, this utility model provides a cable storage device for urban rail vehicle commissioning and testing. It is installed beside the track at the static commissioning test site of urban rail vehicles, and is mainly used to store DC110V (or DC24V) power cables 1 under the track at the static commissioning test site of urban rail vehicles. Plugs are installed at both ends of the cable 1, such as an aviation plug 2 installed at one end of the cable 1, and a terminal (not shown in the figure) installed at the other end of the cable 1.

[0038] like Figures 1 to 5 As shown, the cable storage device for urban rail vehicle debugging and testing provided by this utility model includes a base 3, a support frame 4, a turntable assembly 5 and a drive mechanism 6. The support frame 4 is installed on the base 3, the turntable assembly 5 and the drive mechanism 6 are installed on the support frame 4, and the drive mechanism 6 drives the turntable assembly 5 to rotate in both directions to store or release the cable 1.

[0039] In this embodiment, the turntable assembly 5 includes a horizontally positioned rotating drum 51 and two turntables 52 installed at both ends of the drum 51. The cable 1 is wound around the outer surface of the rotating drum 51, and is also confined between the two turntables 52 to prevent the cable 1 from scattering after winding. The rotating drum 51 is fixedly connected to the drive mechanism 6, which drives the rotating drum 51 and the turntables 52 to rotate, thereby winding the cable 1 neatly around the outer circumference of the rotating drum 51 in sequence. This not only enables the cable 1 to be electrically retracted, improving the efficiency of cable retraction within the track for operators, thus enhancing the efficiency of debugging and testing operations, but also makes it applicable to the electric retraction of cables 1 of different diameters, demonstrating strong versatility.

[0040] like Figure 3 and Figure 4 As shown, in this embodiment, a recessed receiving cavity 53 is provided on the rotating drum 51, and an opening is made on the rotating drum 51. This opening is preferably rectangular, and the receiving cavity 53 is located below the opening. A fixing clamp 7 is installed in the receiving cavity 53. The plug (such as the aviation plug 2) installed at the end of the cable 1 is inserted into the receiving cavity 53 through the opening, and the cable 1 near the aviation plug 2 is then clamped and fixed by the fixing clamp 7. In this way, by clamping the end of the cable 1 with the fixing clamp 7, not only can the end of the cable 1 be firmly clamped and will not loosen during storage, but it also ensures that the cable 1 will not loosen when winding. This also makes the device applicable to the electric storage of cables 1 of different diameters, making it more versatile. At the same time, the fixing clamp 7 does not need to be clamped on the aviation plug 2, but rather on the cable 1, which helps to protect the aviation plug 2 from damage.

[0041] In this embodiment, the component 2, which is significantly larger than the cable 1, and the fixing clamp 7 used to fix the cable 1 are both placed inside the rotating drum 51. They do not protrude from the outside of the rotating drum 51 and do not occupy the space on the outer surface of the rotating drum 51. This allows the cable 1 to be neatly wound on the outer surface of the rotating drum 51, and the appearance of the cable 1 after winding is also more beautiful.

[0042] In this embodiment, preferably, a relatively independent space is formed below the opening inside the rotating drum 51 using a wall panel as the receiving cavity 53. Alternatively, the rotating drum 51 can be a hollow cylindrical structure, directly utilizing the space inside the rotating drum 51 as the receiving cavity 53. More preferably, the receiving cavity 53 and the fixing clamp 7 are located at one end of the rotating drum 51, so that the cable 1 can be wound from one end of the rotating drum 51, which helps to make the cable 1 wound more neatly.

[0043] like Figures 3 to 5 As shown, in this embodiment, it is further preferred that the fixing clamp 7 includes a fixing plate 71, a clamping plate 72, a mounting base 73, and two screws 74. The fixing plate 71 and the mounting base 73 are parallel to each other and are fixed on the wall of the accommodating cavity 53 (i.e., the inner wall of the rotating cylinder 51). One end of the screw 74 passes through the mounting base 73 and is fixed to the clamping plate 72. Two internal threaded holes (not shown in the figure) are opened on the mounting base 73. The two screws 74 are threadedly connected to the mounting base 73 respectively. The other end of the screw 74 is connected to a handle 75. Rotating the handle 75 can drive the clamping plate 72 to move toward the fixing plate 71 to clamp the cable 1, or move it away from the fixing plate 71 to release the cable 1.

[0044] This embodiment also provides another implementation method, in which the fixing plate 71 and the mounting base 73 are integrated into a single structure, forming an integrated structure with a concave cavity in the middle (not shown in the figure). The clamping plate 72 is installed in the cavity, and two screws 74 pass through one side wall of the cavity (i.e., the mounting base 73) and are fixedly connected to the clamping plate 72. The cable 1 is clamped between the clamping plate 72 and the other side wall of the cavity (i.e., the fixing plate 71).

[0045] In this embodiment, it is further preferred that the two screws 74 have a height difference in the radial direction, that is, the distance between the axis of the two screws 74 and the axis of the rotating drum 51 is different. The distance L1 between the axis of the screw 74 near the cable outlet end and the axis of the rotating drum 51 is greater than the distance L2 between the axis of the screw 74 near the plug end and the axis of the rotating drum 51. This facilitates the smooth insertion of the cable 1 and the connector 2 into the receiving cavity 53 at an angle and their smooth placement within the receiving cavity 53. The cable 1 does not need to be bent at its end, thus protecting the cable 1.

[0046] like Figures 1 to 3As shown, in this embodiment, the rotating drum 51 consists of a central cylinder 511 and end plates 512 at both ends. The cylinder 511 and end plates 512 are directly welded together, or they can be fixed with several screws. The turntable 52 consists of an outer ring 521 and multiple connecting parts 522. The connecting parts 522 extend from the ring 521 toward the axis, such as... Figures 1 to 4 As shown, six connectors 522 are provided between the rotating ring 521 and the end plate 512, and the six connectors 522 are evenly distributed on the outer periphery of the end plate 512. One end of the connector 522 is fixed to the rotating ring 521, and the other end of the connector 522 is fixed to the corresponding end plate 512. The connector 522 is welded to the rotating ring 521, and the connector 522 and the end plate 512 can be fixed by welding or by screws.

[0047] In this embodiment, it is further preferred that a connecting structure 54 is provided between the connector 522 and the end plate 512. The purpose of the connecting structure 54 is to increase the connection area between the connector 522 and the end plate 512, so as to ensure the connection strength between the connector 522 and the end plate 512. The diameter of the end plate 512 can be greater than or equal to the outer diameter of the cylinder 511.

[0048] Regarding the connecting structure 54, this embodiment provides an implementation method in which the diameter of the end plate 512 is larger than the outer diameter of the cylinder 511, and the end plate 512 protrudes circumferentially from the middle cylinder 511 by a certain height. The connecting structure 54 includes a slot 541 provided at the end of the connector 522. The slot 541 is engaged with the end plate 512 (the part protruding from the cylinder 511) and fixed by welding.

[0049] Regarding the connecting structure 54, this embodiment provides another implementation method. The diameter of the end plate 512 is equal to or slightly larger than the outer diameter of the cylinder 511. The connecting structure 54 includes a protrusion (not shown in the figure) that protrudes radially outward on the outer periphery of the end plate 512 and a slot on the connector 522. The protrusion is a sheet-like structure with the same thickness as the end plate 512. The protrusion is inserted into the slot and fixed by welding.

[0050] In this embodiment, the connector 522 is further preferably constructed with a U-shaped cross-section, formed by integrally bending a metal plate. Notches are opened on both sides of the U-shaped structure to form the required slots 541, or the space enclosed by the U-shaped structure is used to form the required slots. This ensures the overall structural strength of the connector 522 while also reducing the overall weight of the turntable assembly 5.

[0051] In this embodiment, the turntable frame assembly 5 is entirely made of stainless steel. The cylinder 511 of the rotating drum 51 is a hollow stainless steel cylinder, the end plate 512 is a circular stainless steel plate, the rotating ring 521 in the turntable 52 is a stainless steel tube, and the connecting piece 522 is also formed by bending a stainless steel plate into a U-shape. Based on the length of the cable 1 required for the static debugging test of the urban rail vehicle, the outer diameter of the turntable 52 is preferably 825 mm, the outer diameter of the rotating drum 51 is preferably 400 mm, and the width of the rotating drum 51 is preferably 260 mm.

[0052] In this embodiment, the base 3 is made of ordinary carbon steel and has pre-drilled fixing holes (not shown in the figure), allowing it to be fixed to the ground below the track using bolts. The support frame 4 consists of two trapezoidal support plates 41, installed parallel to each other on the base 3. The turntable frame assembly 5 is rotatably mounted between the two support plates 41. This enhances the support strength of the support frame 4, ensuring the safe and reliable use of the device for storing the cable 1.

[0053] like Figures 1 to 3 As shown, in this embodiment, the drive mechanism 6 includes a motor 61, a reducer 62, and a frequency converter control box 63. A rotating shaft 64 is fixedly connected to the output end of the reducer 62. The rotating shaft 64 is fixedly connected to the rotating drum 51. The rotating shaft 64 is a single, continuous shaft, with its two ends respectively mounted on two support plates 41 via a set of bearings 65 and bearing seats 66. The motor 61, reducer 62, and frequency converter control box 63 are fixed to one of the support plates 41. Thus, driven by the motor 61 and reducer 62, the rotating shaft 64 drives the rotating drum 51 to rotate smoothly in both directions.

[0054] The motor 61, reducer 62, and frequency converter control box 63 are electrically connected. The frequency converter control box 63 is equipped with an EM730 series frequency converter and its corresponding power circuit breaker. The frequency converter operation keypad, forward / reverse, stop, and emergency stop buttons are located on the door of the frequency converter control box 63. The rotation direction, rotation speed, torque, and other operating parameters of the motor 61 can be set through the frequency converter control box 63 to achieve smooth start of the motor 61 during forward / reverse control and deceleration and stopping of the motor 61 during stop control. This can avoid the motor 61 from freely coasting to a stop.

[0055] In this embodiment, it is further preferred that a protective cover 8 is installed on the outer side of the two support plates 41, corresponding to the position of the bearing seat 66, and the protective cover 8 is fixed to the support plate 41 by screws.

[0056] In this embodiment, it is further preferred that an inclined connecting arm 11 is installed on the support plate 41. The reducer 62 is fixed to one end of the connecting arm 11. The connecting arm 11 has an opening through which the rotating shaft 64 passes and connects to the rotating cylinder 51 and the support plate 41. The other end of the connecting arm 11 is fixedly connected to the support plate 41 by a bolt 9. A fixing sleeve 10 is fitted over the bolt 9. The fixing sleeve 10 is a hollow cylinder. The bolt 9 passes through the fixing sleeve 10 and is fixedly connected to the support plate 41 and the connecting arm 11. This allows control of the horizontal distance between the connecting arm 11 and the support plate 41, which is used to avoid the bearing seat 66 and other structures. The inclined connecting arm 11 is used to facilitate the connection point between the connecting arm 11 and the support plate 41 to avoid the installation position of the reducer 62.

[0057] The frequency converter 63 is also fixed to the support plate 41 by two inverted L-shaped mounting plates 11. The two mounting plates 12 are located on both sides of the reducer 62. The housing of the frequency converter 63, the support plate 41 and the mounting plates 12 are all fixedly connected by bolts.

[0058] The cable management device is used as follows:

[0059] 1. When storing cable 1, first arrange cable 1, then insert cable 1 from one end of the connector 2 into the receiving cavity 53 of the rotating drum 51 through the opening on the rotating drum 51, and clamp and fix cable 1 on the device by operating the two handles 75 on the fixing clamp 7.

[0060] 2. One person operates the button on the frequency converter control box 63, the motor 61 starts, and begins to wind the cable. Before the cable 1 is almost completely wound up, the frequency converter control box 63 is moved to the stop position to complete the winding of the cable 1. At the same time, the end of the cable 1 is fixed with hooks, clamps and other structures to prevent the cable 1 from becoming loose.

[0061] 3. When using cable 1, one person operates the button on the frequency converter control box 63 while the other person pulls cable 1 to make the motor 61 run in reverse. Just before cable 1 is fully pulled out, the frequency converter control box 63 is switched to the stop position to release cable 1.

[0062] The above technical solution has the following beneficial effects:

[0063] 1. This cable storage device can electrically store cables, improving the efficiency of cable storage within the track for operators, thereby enhancing the efficiency of debugging and testing operations.

[0064] 2. When storing cables, this cable storage device can conveniently place the connectors, terminals, and cable fixing points inside the accommodating cavity located inside the rotating drum, without protruding outside the rotating drum, allowing the cables to be neatly wound on the outer surface of the rotating drum.

[0065] 3. This cable storage device clamps the end of the cable with a fixing clamp, and can be used for electric storage of cables of different diameters, making it highly versatile.

[0066] 4. The motor, reducer, and frequency converter control box in the drive mechanism of this cable storage device can achieve smooth motor start-up during forward and reverse rotation control, and decelerate and stop the motor during stop control, avoiding the motor freely sliding to a stop.

[0067] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A cable storage device for urban rail vehicle commissioning and testing, characterized in that: The device includes a base, a support frame, a turntable assembly, and a drive mechanism. The support frame is mounted on the base, and the turntable assembly and drive mechanism are mounted on the support frame. The drive mechanism drives the turntable assembly to rotate in both directions. The turntable assembly includes a horizontally placed rotating cylinder and two turntables mounted at both ends of the rotating cylinder. A cable is wound around the outer surface of the rotating cylinder. The rotating cylinder has a recessed receiving cavity. A fixing clamp is installed in the receiving cavity. The end of the cable is clamped and fixed by the fixing clamp, and the plug installed at the end is placed in the receiving cavity.

2. The cable storage device for urban rail vehicle commissioning and testing according to claim 1, characterized in that: The accommodating cavity and the fixing clamp are located at one end of the rotating drum.

3. The cable storage device for urban rail vehicle commissioning and testing according to claim 1, characterized in that: The fixing clamp includes a fixing plate, a clamping plate, a mounting base, and two screws. The fixing plate and the mounting base are fixed to the wall of the accommodating cavity. A handle is installed at one end of each screw. The other end of the screw passes through the mounting base and is fixedly connected to the clamping plate. The screw is threadedly connected to the mounting base. Rotating the handle causes the clamping plate to move toward or away from the fixing plate, thereby clamping or releasing the cable.

4. The cable storage device for urban rail vehicle commissioning and testing according to claim 3, characterized in that: The distance L1 between the screw shaft centerline and the drum shaft centerline near the outlet end is greater than the distance L2 between the screw shaft centerline and the drum shaft centerline near the plug end.

5. The cable storage device for urban rail vehicle commissioning and testing according to claim 1, characterized in that: The rotating cylinder consists of a central cylinder and end plates at both ends. The turntable consists of a rotating ring and multiple connecting parts. One end of each connecting part is fixedly connected to the rotating ring, and the other end of each connecting part is fixed to the corresponding end plate. The diameter of the end plate is greater than or equal to the outer diameter of the cylinder.

6. The cable storage device for urban rail vehicle commissioning and testing according to claim 5, characterized in that: A connection structure is provided between the connector and the end plate; The connection structure includes a slot provided at the end of the connector, which is engaged with the end plate and fixed by welding; Alternatively, the connection structure includes a protrusion that protrudes radially outward along the outer periphery of the end plate and a slot on the connector, wherein the protrusion is inserted into the slot and fixed by welding.

7. The cable storage device for urban rail vehicle commissioning and testing according to claim 6, characterized in that: The connector has a U-shaped cross-section and is formed by bending a metal plate. The slot is formed by utilizing the space enclosed by the U-shaped structure or by openings on both sides of the U-shaped structure to form the card slot.

8. The cable storage device for urban rail vehicle commissioning and testing according to claim 1, characterized in that: The support frame consists of two trapezoidal support plates, which are installed in parallel on the base, and the turntable assembly is installed between the two support plates.

9. The cable storage device for urban rail vehicle commissioning and testing according to any one of claims 1-8, characterized in that: The drive mechanism includes a motor, a reducer, and a frequency converter control box. The output end of the reducer is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the rotating drum. The motor, reducer, and frequency converter control box are fixed on one of the support frames, and the motor, reducer, and frequency converter control box are electrically connected.

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