Traction power supply device in locomotive garage

Abstract

The utility model provides a traction power supply device in a locomotive garage, which comprises a recovery device, the recovery device comprises a power part and a connecting part, the power part is connected to one end of a cable track, the connecting part is connected with a traction tackle, and the traction tackle is connected with the recovery device. The power part can drive the connecting part to drive the traction tackle to move in the opposite direction of the locomotive. According to the traction power supply device provided by the utility model, after the traction tackle arrives at the traction power supply terminal point along with the locomotive, the traction tackle can be withdrawn by utilizing the recovery device, and as the connecting part of the recovery device is connected with the traction tackle, when the power part of the recovery device provides driving force, the traction tackle can be recovered. The connecting part can be driven to drive the traction tackle to return to the traction tackle, and compared with the traction tackle pushed by a recovery tackle, the traction tackle does not slip.

Description

Technical Field

[0001] The utility model relates to the technical field of renovation work in an electric locomotive depot, in particular to a traction power supply system in a locomotive depot. Background Art

[0002] When an electric locomotive is undergoing repair and maintenance, it needs to enter the maintenance yard inside the locomotive depot for refurbishment. Since the depot is a non-electrical area, the locomotive cannot be driven by a pantograph, and a special traction power supply is required to power the locomotive to move inside the depot. The applicant's prior application for a utility model patent with the publication number "CN220129950U" and the name "A traction power supply system inside a locomotive depot" uses a telescopic cable for power transmission and a plug and socket for power connection. During the power supply process, the start and stop, forward and reverse traction operations can be achieved through a handheld operating panel, without the need for intermittent power supply operations, thereby improving operating efficiency and the equipment's impact resistance. However, in this solution, after the traction pulley is brought with the locomotive to the traction power supply end point, an independently powered recovery pulley is used to bring the traction pulley back. Since both the traction pulley and the recovery pulley slide on the cable track, the recovery pulley will slip when pushing the traction pulley due to insufficient friction between the track, resulting in the traction pulley being unable to be automatically recovered. Adding a counterweight to the recovery pulley might be one solution, but this remains unreliable and can exacerbate slippage in freezing, rainy, and snowy weather. Another approach is to add a rack to the cable track and mesh the gears on the recovery pulley to address the slippage issue, but this complicates the structure and requires a higher drive torque for the recovery pulley.

[0003] The invention patent publication number "CN102785669A," titled "Method and System for Powering EMUs in Electric Locomotive Depots Based on Busbars," utilizes busbars for power supply, with a collector trolley attached to the busbars and following the locomotives to collect power. While this method provides continuous power to the locomotives, the busbars and collector trolleys still suffer from unreliable contact and conductivity, resulting in a short service life.

[0004] Therefore, it is of great significance to propose a method in this field that can reliably retract the telescopic cable and realize continuous towing operation. Utility Model Content

[0005] In response to the deficiencies of the prior art, the utility model provides a traction power supply device in a locomotive shed, comprising a telescopic cable electrically connected to a ground traction power supply, a cable track laid along the locomotive's traveling direction, the telescopic cable laid on the cable track, a traction pulley also slidably installed on the cable track, the traction pulley can move with the locomotive and drive the telescopic cable to extend and retract, and further comprising a recovery device, the recovery device comprising a power part and a connecting part, the power part being connected to one end of the cable track, the connecting part being connected to the traction pulley, the power part being able to drive the connecting part to drive the traction pulley to move in the opposite direction of the locomotive's traveling direction.

[0006] Furthermore, the recovery device is a winch device, which includes a winch cable and a winch. One end of the winch cable is connected to a traction pulley. The rotation of the winch can drive the traction pulley to move in the opposite direction of the locomotive's travel through the winch cable.

[0007] Furthermore, the winch is driven by a winch motor.

[0008] Alternatively, the capstan is provided with a rebound spring, which can drive the capstan to rotate.

[0009] Furthermore, the cable track is laid overhead, and multiple intermediate cable pulleys are slidably installed on the cable track. The telescopic cable is connected to the intermediate cable pulley and the end is connected to the traction pulley. The winch line passes through the intermediate cable pulley and the end is connected to the traction pulley.

[0010] Furthermore, a bridging steel rope is connected between the intermediate cable pulleys, and the length of the bridging steel rope between two adjacent intermediate cable pulleys is less than the length of the telescopic cable connected therebetween.

[0011] Furthermore, it also includes a power cable and a locomotive cable. The ground traction power supply, power cable, telescopic cable, and locomotive cable are electrically connected through plugs and sockets in sequence, and the locomotive cable is electrically connected to the locomotive through a plug.

[0012] Furthermore, a winding winch is connected to the cable track, one end of the winding winch is connected to a storage basket, and the locomotive cable is stored in the storage basket and is driven to rise and fall by the winding winch.

[0013] Compared with the existing technology, the technical solution of the present application has the following beneficial effects: the traction power supply device provided by the utility model can use the recovery device to retract the traction pulley after the traction pulley follows the locomotive to the traction power supply end point. Since the connecting part of the recovery device is connected to the traction pulley, when the power part of the recovery device provides driving force, the connecting part can be driven to drive the traction pulley back to the traction vehicle, which will not cause the problem of slipping when the recovery pulley pushes the traction pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1: Overall structural principle diagram of the traction power supply device;

[0015] Figure 2 : Schematic diagram of the traction pulley and intermediate cable pulley structure. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] A traction power supply device in a locomotive depot includes a telescopic cable 2 electrically connected to a ground traction power supply 1, a cable track 4 laid along the locomotive's travel direction, the telescopic cable 2 laid on the cable track 4, and a traction pulley 5 slidably installed on the cable track 4. The traction pulley 5 can move with the locomotive and drive the telescopic cable 2 to extend and retract. The device also includes a recovery device, the recovery device including a power part and a connecting part. The power part is connected to one end of the cable track 4, and the connecting part is connected to the traction pulley 5. The power part can drive the connecting part to drive the traction pulley 5 to move in the opposite direction of the locomotive's travel.

[0018] It should be noted that the power part of the recovery device is fixed and will not move with the recovery of the traction pulley 5. The connecting part is connected to the traction pulley 5. When the traction pulley 5 needs to be recovered, the power part provides driving force to drive the connecting part to move along the cable track 4. During this process, the driving force of the power part will continue to act on the traction pulley 5 through the connecting part. Even if the traction pulley 5 itself slips, it can be recovered to the starting point of the traction power supply under this force, which is convenient for the continuous operation of the next traction vehicle.

[0019] Generally speaking, the power part of the recovery device can be active, such as electric drive, or passive, such as driven by mechanical rebound force. Under the action of the driving force, the connecting part can pull the traction pulley 5 back or push the traction pulley 5 to retract.

[0020] A possible implementation method may be that the recovery device is a winch device 100, which includes a winch cable 101 and a winch 102. One end of the winch cable 101 is connected to the traction pulley 5. The rotation of the winch 102 can drive the traction pulley 5 to move in the opposite direction of the locomotive's travel through the winch cable 101.

[0021] In this embodiment, if Figure 1As shown in the figure, the winch 102 is electrically driven and installed near the starting point of the traction. The winch cable 101 is fixedly connected to the traction sheave 5. During traction, the winch 102 is powered off, and the winch cable 101 is gradually lengthened as the traction sheave 5 moves. When the traction sheave 5 reaches the end of the traction, following the locomotive, the winch 102 begins to rotate, and the winch cable 101 pulls the traction sheave 5 back to the starting position. During the traction sheave 5 recovery process, the winch cable 101 continuously applies the pull-back driving force of the winch 102 to the traction sheave 5, preventing retrieval failure due to slippage.

[0022] like Figure 2 As shown, in another embodiment, the capstan 102 is passively driven. Specifically, the capstan 102 is equipped with a rebound spring 103, which drives the capstan 102 to rotate. Similar to the previous embodiment, the capstan cable 101 pulls the rebound spring 103 during traction, causing it to deform and accumulate force. When the traction sheave 5 follows the locomotive to the traction end point, the connection between the traction sheave 5 and the locomotive is released, and the capstan 102 begins to rotate under the deformation force of the rebound spring 103. The capstan cable 101 pulls the traction sheave 5 back to the starting position of the traction.

[0023] Based on the above embodiment, the cable track 4 is laid overhead, and multiple intermediate cable pulleys 6 are slidably installed on the cable track 4. The telescopic cable 2 is connected to the intermediate cable pulley 6 and the end is connected to the traction pulley 5. The winch wire 101 passes through the intermediate cable pulley 6 and the end is connected to the traction pulley 5.

[0024] In this embodiment, the cable track 4 is constructed of an I-beam or other structural form of track, and the telescopic cable 2 is mounted on the cable track 4 using an intermediate cable pulley 6 and a traction pulley 5. The traction pulley 5 is located at the head end of the telescopic cable 2, which can follow the locomotive on the cable track 4 and pull the telescopic cable 2. This pulley also drives the intermediate cable pulley 6 to slide on the cable track 4, further driving the telescopic cable 2 to extend and retract to accommodate the locomotive's movement. The end of the telescopic cable 2 is a fixed, immovable hanging frame. The intermediate cable pulley 6 and the traction pulley 5 are connected to the cable track 4 in a manner similar to a hanging rail, with a certain gap between them. The winch cable 101 passes through the gap between the intermediate cable pulley 6 and the cable track 4 and is connected to the traction pulley 5 at its end. When retrieving the traction pulley 5, the tension of the winch cable 101 acts on the traction pulley 5, which pushes each intermediate cable pulley 6 to move in sequence during the traction pulley 5 recovery process.

[0025] To prevent excessive tension on the telescopic cables 2 between the intermediate cable pulleys 6, a jumper cable 200 is connected between the intermediate cable pulleys 6. The jumper cable 200 between two adjacent intermediate cable pulleys 6 is shorter than the length of the telescopic cable 2 connected therebetween. When the trolley is pulled, the intermediate cable pulleys 6 are pulled apart by the jumper cable 200, and the telescopic cables 2 are not stressed.

[0026] In a more preferred embodiment, a power cable 7 and a locomotive cable 8 are also included. The ground traction power supply 1, power cable 7, telescopic cable 2, and locomotive cable 8 are electrically connected in sequence via plugs and sockets, with the locomotive cable 8 being electrically connected to the locomotive via a plug. Because the power cable 7 does not need to extend or retract with the locomotive's movement, the use of a plug and socket connection facilitates replacement and maintenance. One end of the telescopic cable 2 is connected to the power cable 7 at the fixed cable hanger using a plug and socket, while the other end is also connected to the locomotive cable 8 using a plug and socket. The locomotive cable 8 can be stored during idle time and serves as the power supply connection cable between the telescopic cable 2 and the locomotive during operation. All of these cables utilize plugs and sockets, ensuring reliable connection and facilitating segmented replacement if damaged.

[0027] In a more preferred embodiment, the cable track 4 is further connected to a winding winch 300, one end of which is connected to a storage basket 15. The locomotive cable 8 is stored in the storage basket 15 and is raised and lowered by the winding winch 300. The storage basket 15 can be lowered by the winding winch 300 during the towing operation and can be raised and recovered after the operation is completed to prevent collision with people passing below.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction power supply device in a locomotive shed, comprising a telescopic cable (2) electrically connected to a ground traction power supply (1), a cable track (4) laid along the locomotive travel direction, the telescopic cable (2) laid on the cable track (4), a traction pulley (5) slidably mounted on the cable track (4), the traction pulley (5) being able to move along with the locomotive and drive the telescopic cable (2) to extend and retract, and characterized in that: The utility model also includes a recovery device, wherein the recovery device includes a power part and a connection part, wherein the power part is connected to one end of the cable track (4), and the connection part is connected to the traction pulley (5). The power part can drive the connection part to drive the traction pulley (5) to move in the opposite direction of the locomotive's travel.

2. The traction power supply device in a locomotive garage according to claim 1, characterized in that: The recovery device is a winch device (100), which includes a winch cable (101) and a winch (102). One end of the winch cable (101) is connected to a traction pulley (5). The rotation of the winch (102) can drive the traction pulley (5) to move in the opposite direction of the locomotive's travel through the winch cable (101).

3. The traction power supply device in a locomotive garage according to claim 2, characterized in that: The winch (102) is driven by a winch motor.

4. The traction power supply device in a locomotive garage according to claim 2, characterized in that: The capstan (102) is provided with a rebound spring (103), and the rebound spring (103) can drive the capstan (102) to rotate.

5. The traction power supply device in a locomotive depot according to claim 3 or 4, characterized in that: The cable track (4) is laid overhead, and a plurality of intermediate cable pulleys (6) are slidably installed on the cable track (4). The telescopic cable (2) is connected to the intermediate cable pulley (6) and its end is connected to the traction pulley (5). The winch cable (101) passes through the intermediate cable pulley (6) and its end is connected to the traction pulley (5).

6. The traction power supply device in a locomotive depot as claimed in claim 5, characterized in that: A bridging steel rope (200) is connected between the intermediate cable pulleys (6), and the length of the bridging steel rope (200) between two adjacent intermediate cable pulleys (6) is less than the length of the telescopic cable (2) connected therebetween.

7. The traction power supply device in a locomotive garage according to claim 6, characterized in that: It also includes a power cable (7) and a locomotive cable (8), wherein the ground traction power supply (1), the power cable (7), the telescopic cable (2), and the locomotive cable (8) are electrically connected in sequence through a plug and a socket, and the locomotive cable (8) is electrically connected to the locomotive through a plug.

8. The traction power supply device in a locomotive garage according to claim 7, characterized in that: The cable track (4) is also connected to a winding winch (300), one end of which is connected to a storage basket (15). The locomotive cable (8) is stored in the storage basket (15) and is driven to rise and fall by the winding winch (300).

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