In-warehouse self-walking car pulling and power supply device

Abstract

The utility model provides a self -walking in the library pulls car power supply device, including ground power supply, the arrangement slide wire assembly along the locomotive walking direction part, slide wire assembly and ground power supply electric connection obtains direct current power supply, still include walking unit, walking unit is connected with inverter and can reciprocatingly move along slide wire assembly, walking unit and slide wire assembly electric connection obtains direct current power supply as inverter input, inverter output end through the car cable connection locomotive is car power supply for locomotive. The utility model provides the traction power supply device, obtains direct current power supply from ground power supply with slide wire assembly, walking unit can obtain the direct current power supply of slide wire assembly while following locomotive walking, inverter is followed with walking unit and walks along with locomotive, and direct current power supply from slide wire assembly is as input, and power supply for locomotive traction. Since the power supply line between inverter and locomotive always follows locomotive walking, the cable length is relatively short, solves the problem of long distance car pressure drop.

Description

Technical Field

[0001] This utility model relates to the field of maintenance operation technology in electric locomotive depots, specifically to a self-propelled tractor power supply device for depots. Background Technology

[0002] When electric locomotives undergo maintenance, they need to enter the locomotive depot's maintenance yard for repairs. Since the depot is a power-deprived area, the locomotive cannot be powered by a pantograph; a dedicated traction power supply is required to power the locomotive for movement within the depot. The applicant's earlier invention patent, publication number "CN116552250A," entitled "A Traction Power Supply Method in a Locomotive Depot," utilizes a retractable cable for power transmission and a plug-and-socket connection for power access. During power supply, starting, stopping, and reversing the locomotive can be controlled via a handheld control panel, eliminating the need for intermittent power access and improving operational efficiency and equipment shock resistance. However, this solution still has limitations. In maintenance yards with long traction distances, the retractable cable needs to accommodate the extended distance from the starting point to the end point of the traction, resulting in a cable length longer than the straight-line distance. This excessively long cable leads to significant voltage drop, causing insufficient or unstable power supply voltage during traction. Therefore, further optimization of the technical solution is needed to address this issue. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a self-propelled locomotive traction power supply device within a depot, including a ground power supply, a sliding rail assembly deployed along the locomotive's travel direction, the sliding rail assembly and the ground power supply being electrically connected to obtain DC power; it also includes a traveling unit, which is connected to an inverter and can reciprocate along the sliding rail assembly, the traveling unit and the sliding rail assembly being electrically connected to obtain DC power as the inverter's input terminal, and the inverter's output terminal being connected to the locomotive via a traction cable to supply power to the locomotive's traction.

[0004] Furthermore, the sliding rail assembly includes a power supply slide rail deployed along the locomotive's travel direction and a current collector slidably connected to the power supply slide rail. The traveling unit includes a traveling track deployed along the locomotive's travel direction and a traveling trolley that travels on the traveling track. The traveling trolley drives the current collector to move along the power supply slide rail and obtain DC power.

[0005] Furthermore, the walking unit can be connected to the locomotive via an insulated rope to serve as the locomotive's traction power source.

[0006] Furthermore, the walking unit obtains DC power from the slide rail assembly as a power source for walking and / or reversing.

[0007] Furthermore, both the power supply slide rail and the travel rail are laid overhead, the travel trolley is slidably connected to the travel rail, the travel trolley is connected to the load-bearing component, the inverter is installed on the load-bearing component, and the current collector is connected to the load-bearing component.

[0008] Furthermore, a winding assembly is also connected to the bearing assembly, and the winding assembly is connected to the traction cable. The winding assembly can be driven to wind the traction cable by the DC power obtained from the sliding wire assembly.

[0009] Furthermore, at least two equipotential bonding points are deployed at intervals along the locomotive's travel direction on the sliding rail assembly, and all equipotential bonding points are electrically connected to the ground power output terminal.

[0010] Furthermore, the ground power output terminal is connected to the pre-drain ground busbar, and the equipotential bonding point is electrically connected to the pre-drain ground busbar.

[0011] Furthermore, the DC power obtained by the current collector from the power supply slide rail is electrically connected to the traction cable via a switching device. The end of the traction cable is connected to a DC socket. The switching device can control the DC power obtained by the current collector from the power supply slide rail to supply power to the AC / DC traction locomotive via the DC socket at the end of the traction cable.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects: The traction power supply device provided by this utility model utilizes the sliding line assembly to obtain DC power from the ground power source. The traveling unit can obtain DC power from the sliding line assembly while moving with the locomotive. The inverter, along with the traveling unit, moves with the locomotive, using the DC power from the sliding line assembly as input to supply traction power to the locomotive. Because the power supply line between the inverter and the locomotive always moves with the locomotive, the cable length is relatively short, solving the voltage drop problem caused by long-distance traction. Attached Figure Description

[0013] Figure 1 Schematic diagram of the traction power supply device;

[0014] Figure 2 : Schematic diagram of the traction power supply device along the locomotive head direction;

[0015] Figure 3 : Figure 2 Partial schematic diagram;

[0016] Figure 4 : Schematic diagram of the load-bearing component structure;

[0017] Figure 5 Basic circuit diagram of traction power supply device. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 As shown, a self-propelled locomotive traction power supply device for a depot includes a ground power supply 1, a sliding rail assembly 2 deployed along the locomotive's travel direction, and the sliding rail assembly 2 and the ground power supply 1 electrically connected to obtain DC power; it also includes a traveling unit 3, which is connected to an inverter 4 and can reciprocate along the sliding rail assembly 2. The traveling unit 3 and the sliding rail assembly 2 are electrically connected to obtain DC power as the input terminal of the inverter 4, and the output terminal of the inverter 4 is connected to the locomotive through a traction cable 5 to supply power for the locomotive's traction.

[0020] In this embodiment, the ground power supply 1 provides the power for the entire locomotive's traction operation. Fixed within the maintenance depot, it does not need to move with the locomotive and outputs DC power at a suitable power level. The sliding rail assembly 2 is electrically connected to the output of the ground power supply 1, ensuring DC power is supplied to the entire assembly. The traveling unit 3 moves with the locomotive, drawing DC power from the sliding rail assembly 2. The inverter 4, connected to the traveling unit 3, uses this DC power as input, inverts it, and outputs AC power, which supplies power to the traction locomotive via the traction cable 5. During traction, the operator only needs to connect the locomotive and the traction cable 5 to complete continuous traction operations. Since the retractable cable does not need to adapt to the locomotive's traction distance, and the inverter 4 moves with the locomotive via the traveling unit 3, the power supply line from the inverter 4's output to the locomotive is fixed, thus solving the voltage drop problem caused by the retractable cable when the traction distance is long.

[0021] In a more preferred embodiment, the sliding rail assembly 2 includes a power supply slide rail 21 deployed along the locomotive travel direction and a current collector 22 slidably connected to the power supply slide rail 21. The traveling unit 3 includes a traveling track 31 deployed along the locomotive travel direction and a traveling trolley 32 traveling on the traveling track 31. The traveling trolley 32 drives the current collector 22 to move along the power supply slide rail 21 and obtain DC power.

[0022] In this embodiment, the power supply slide rail 21 is connected to the output terminal of the ground power supply 1, so the entire power supply slide rail 21 carries DC power. The power collector 22 is slidably connected to the power supply slide rail 21 to draw power. It does not need its own power, but is driven by the traveling trolley 32. When the traveling trolley 32 is pulling the car, it can move back and forth on the traveling track 31 using its own power. The inverter 4 also moves along with it. Thus, the inverter 4 can instantly convert the DC power on the power supply slide rail 21 into AC power and supply power to the traction locomotive through the traction cable 5.

[0023] The power source for the traveling unit 3 can be implemented as follows: the traveling unit 3 can be connected to the locomotive via an insulated rope 6 to serve as the locomotive's traction power source. One end of the insulated rope 6 is connected to the traveling trolley 32, and the other end can be attached to the locomotive. When the locomotive is towed, the traveling trolley 32 can be pulled to follow the locomotive. Correspondingly, the power source for the traveling unit 3 can also utilize the DC power obtained from the self-powered slide rail 21 as a power source to follow the locomotive.

[0024] After the traction is completed, the locomotive runs to the end point. At this time, it is necessary to disconnect the insulated rope 6 and the traction cable 5 from the locomotive. At this time, the traveling trolley 32 in the traveling unit 3 can obtain DC power from the sliding line assembly 2 as the power source for traveling back, driving and moving the current collector 22 and the inverter 4 back to the starting point of the traction to wait for the next traction operation.

[0025] In a more preferred embodiment, it can be as follows Figure 2 and Figure 3 As shown. The power supply slide rail 21 and the travel track 31 are both laid in the air. The travel trolley 32 is slidably connected to the travel track 31. The travel trolley 32 is connected to the bearing component 7. The inverter 4 is installed on the bearing component 7. The current collector 22 is connected to the bearing component 7.

[0026] In this embodiment, the walking track 31 is an I-beam laid overhead in the preparation warehouse. The I-beam is supported by columns 33 that are set at intervals. The power supply slide rail 21 is laid parallel to the walking track 31 and is also supported by columns 33. Figure 3In the partial schematic diagram, the column 33 has a beam 34 for lateral support. The I-beam and the power supply slide rail 21 are both supported and laid through the beam 34. Above the beam 34, rain shelters 35 are connected to each column 33 to prevent rain and snow from eroding the power supply slide rail 21. One end of the current collector 22 slides on the power supply slide rail 21 to collect power, and the other end is connected to the traveling unit 3. The traveling wheels of the traveling trolley 32 travel on the inner surface of the I-beam, thereby driving the current collector 22 to slide and collect power. The power output end of the current collector 22 is electrically connected to the input end of the inverter 4. The load-bearing component 7 is a structural component for installing and fixing the inverter 4. It can be a box-type structure or a support frame structure. The load-bearing component 7 is suspended under the I-beam by the traveling trolley 32. On the one hand, it serves as a fixed load-bearing installation component for the inverter 4. On the other hand, it can provide a certain amount of self-weight, enhance the friction between the traveling wheels of the traveling trolley 32 and the I-beam, and prevent slippage, especially when using its own power to return to the starting point of the trolley.

[0027] In a more preferred embodiment, the carrying component 7 is further connected to a winding component 8, which is connected to the traction cable 5. The winding component 8 can be driven by a DC power source obtained from the sliding component 2 to wind the traction cable 5. The winding component 8 is a motor-driven winding reel that can wind and store the traction cable 5 after the traction operation is completed.

[0028] In a more preferred embodiment, see [link to preferred embodiment]. Figure 1 To further address the voltage drop issue caused by excessively long power supply lines, at least two equipotential bonding points 23 are spaced apart along the locomotive's travel direction on the sliding rail assembly 2. Each equipotential bonding point 23 is electrically connected to the output terminal of the ground power supply 1. That is, the power supply rail 21 draws power from the ground power supply 1 at regular intervals through the equipotential bonding points 23. When the power collector 22 moves and draws power along with the traveling trolley 32, the multiple equipotential bonding points 23 ensure that the voltage on the power supply rail 21 remains consistent with the voltage at the output terminal of the ground power supply 1.

[0029] In a more preferred embodiment, the output terminal of the ground power supply 1 is connected to the pre-installed ground busbar 11, and the equipotential bonding point 23 is electrically connected to the pre-installed ground busbar 11. The pre-installed ground busbar 11 has been pre-deployed in the maintenance depot. In the prior art, the power supply for the traction vehicle is obtained by intermittently contacting the power extraction point of the pre-installed ground busbar 11 with a power extraction rod. In this embodiment, the pre-installed ground busbar 11 is used to extract power and connect to the power supply slide rail 21 through cables deployed along the column 33 at certain intervals, ensuring the consistency of the voltage on the power supply slide rail 21 and minimizing the amount of work required for modification within the depot.

[0030] While most locomotive traction operations require AC power, there are also instances of DC traction locomotives. To improve the applicability of this power supply device, such as... Figure 5As shown, the DC power source obtained by the current collector 22 from the power supply slide rail 21 is electrically connected to the traction cable 5 via a switching device. The end of the traction cable 5 is connected to the DC socket 51. The switching device can control the DC power source obtained by the current collector 22 from the power supply slide rail 21 to supply power to the DC traction locomotive via the DC socket 51 at the end of the traction cable 5.

[0031] Specifically, the DC power obtained by the current collector 22 from the power supply rail 21 is connected to the inverter 4 via the normally open contact of contactor KM1. The output of inverter 4 is connected to the traction cable 5 in the winding assembly 8. Simultaneously, it is connected to the traction cable 5 in the winding assembly 8 via the normally closed contact of contactor KM1. One end of the traction cable 5 can be connected to a DC socket 51, which directly provides DC power to the locomotive. Another end of the traction cable 5 can be connected to an AC socket 52. The AC socket 52 can be multiplexed using a converter and the DC socket 51, or it can be branched within the traction cable 5. When the normally open contact of contactor KM1 is closed, AC power is provided to the locomotive for traction through the inverter 4 and the AC socket 52.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power supply device for a self-propelled trolley within a warehouse, comprising a ground power supply (1), characterized in that, A sliding rail assembly (2) is deployed along the locomotive's travel direction. The sliding rail assembly (2) is electrically connected to the ground power supply (1) to obtain DC power. The locomotive also includes a traveling unit (3), which is connected to an inverter (4) and can move back and forth along the sliding rail assembly (2). The traveling unit (3) is electrically connected to the sliding rail assembly (2) to obtain DC power as the input of the inverter (4). The output of the inverter (4) is connected to the locomotive via a traction cable (5) to provide power for the locomotive to pull the locomotive.

2. The power supply device for self-propelled trolleys within the warehouse as described in claim 1, characterized in that, The sliding rail assembly (2) includes a power supply slide rail (21) deployed along the locomotive travel direction and a current collector (22) slidably connected to the power supply slide rail (21). The traveling unit (3) includes a traveling track (31) deployed along the locomotive travel direction and a traveling trolley (32) traveling on the traveling track (31). The traveling trolley (32) drives the current collector (22) to move along the power supply slide rail (21) and obtain DC power.

3. The power supply device for self-propelled trolleys within the warehouse as described in claim 2, characterized in that, The walking unit (3) can be connected to the locomotive via an insulated rope (6) to serve as the locomotive's traction power source.

4. The power supply device for self-propelled trolleys within the warehouse as described in claim 3, characterized in that, The walking unit (3) obtains DC power from the slide rail assembly (2) as a power source for walking and / or reversing.

5. The power supply device for self-propelled trolleys within the warehouse as described in claim 2, characterized in that, The power supply slide rail (21) and the walking track (31) are both laid in the air. The walking trolley (32) is slidably connected to the walking track (31). The walking trolley (32) is connected to the bearing component (7). The inverter (4) is installed on the bearing component (7). The collector (22) is connected to the bearing component (7).

6. The power supply device for self-propelled trolleys within the warehouse as described in claim 5, characterized in that, The bearing component (7) is also connected to a winding component (8), which is connected to a traction cable (5). The winding component (8) can be driven to wind the traction cable (5) by the DC power obtained from the sliding component (2).

7. The power supply device for self-propelled trolleys within the warehouse as described in claim 2, characterized in that, At least two or more equipotential connection points (23) are deployed at intervals along the locomotive travel direction on the sliding rail assembly (2), and all equipotential connection points (23) are electrically connected to the output terminal of the ground power supply (1).

8. The power supply device for self-propelled trolleys within the warehouse as described in claim 7, characterized in that, The output terminal of the ground power supply (1) is connected to the pre-drained ground busbar (11), and the equipotential bonding point (23) is electrically connected to the pre-drained ground busbar (11).

9. The power supply device for a self-propelled trolley within the warehouse as described in claim 2, characterized in that, The current collector (22) obtains DC power from the power supply slide rail (21), and is electrically connected to the traction cable (5) via a switching device. The end of the traction cable (5) is connected to a DC socket (51). The switching device can control the current collector (22) to obtain DC power from the power supply slide rail (21) to supply power to the AC / DC traction locomotive via the DC socket (51) at the end of the traction cable (5).

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