Multifunctional ladder trolley for maintenance of rail transit overhead line system

Abstract

The invention relates to the technical field of rail transit maintenance equipment, in particular to a multifunctional ladder truck for maintenance of a rail transit overhead line system. According to the technical scheme, the working platform comprises a movable base, a fixed ladder assembly, a main working platform and telescopic ladder assemblies, the fixed ladder assembly is fixedly arranged on the movable base, the main working platform is fixedly arranged at the top of the fixed ladder assembly, the telescopic ladder assemblies are divided into two pieces and are connected to the two sides of the fixed ladder assembly in a sliding mode, and the two pieces of telescopic ladder assemblies are connected through telescopic ladder assembly supporting rods. The device has the beneficial effects that the telescopic ladder assembly arranged on the fixed ladder assembly can be used for super-high-altitude maintenance operation above a contact line; the telescopic ladder assembly adopts a two-stage telescopic ladder assembly and can quickly complete telescopic fixation, so that the height of the ladder trolley can be quickly changed in the maintenance process for corresponding maintenance or movement; the anti-toppling device is arranged on the movable base, and the retractable extension supporting legs are further arranged on the fixed ladder frame, so that the stability of the ladder truck can be improved during work overhaul, and the safety of overhaul work is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit maintenance equipment, and particularly to a multi-functional ladder car for the maintenance of an overhead catenary system of rail transit. Background Art

[0002] For the overhead catenary system of rail transit, at present, a ladder car is required for its inspection and maintenance, which facilitates the staff to move along the overhead catenary above the track and complete the inspection work. For the currently commonly used ordinary ladder car, due to the limitation of the height of the catenary, the working platform must be lower than the catenary, which results in that for the catenary equipment above the catenary, the ordinary ladder car cannot provide sufficient working height. Therefore, at present, the method adopted is to add an engineering vehicle, and the ultra-high altitude operation above the catenary is carried out by means of setting up a ladder on the platform of the engineering vehicle. However, since there is no fixing facility between the ladder and the platform of the engineering vehicle, it is easy to have safety hazards such as the ladder sliding or tipping over only by manual ladder support, and the shift fees of the driver and the engineering vehicle are additionally increased. At the same time, due to the complexity of the tracks in the rail transit, when the engineering vehicle enters the inspection area, various aspects need to cooperate for the approach debugging, resulting in a multiple increase in the shunting time of the engineering vehicle, seriously affecting the inspection efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-functional ladder car for the inspection and maintenance of an overhead catenary system of rail transit, which can realize ultra-high altitude inspection operations on the premise of avoiding conflicts with the catenary and improve the inspection efficiency. It can not only carry out the inspection and emergency disposal operations of the catenary at the conventional height on the main working platform of the ladder car below the catenary, but also avoid the catenary and realize the inspection and emergency disposal operations of the ultra-high altitude catenary equipment by ascending the telescopic ladder frame. It can also realize the inspection and emergency disposal operations of the catenary equipment in the horizontal direction by extending the horizontal platform, significantly expanding the inspection scope and improving the operation and emergency disposal efficiency. At the same time, it is equipped with an electric device to save labor; equipped with an anti-tipping device to improve the safety and stability of the ladder car; equipped with a pantograph simulation device to realize the simulation detection of the pantograph-catenary relationship and ensure a good pantograph-catenary transition state. It can also be applied to the inspection and maintenance of other equipment and buildings above the track, with a wide range of applications.

[0004] To achieve the above purpose, the present invention adopts the following technical scheme: A multi-functional ladder car for the maintenance of an overhead catenary system of rail transit, including a mobile base, a fixed ladder frame, a main working platform and a telescopic ladder frame. The fixed ladder frame is fixedly arranged on the mobile base, the main working platform is fixedly arranged at the top of the fixed ladder frame, the telescopic ladder frame is divided into two pieces and is slidably connected to both sides of the fixed ladder frame, and the two telescopic ladder frames are connected by a telescopic ladder frame support rod.

[0005] Specifically, the telescopic ladder frame includes a first-stage telescopic ladder frame and a second-stage telescopic ladder frame. The first-stage telescopic ladder frame is slidably connected to the fixed ladder frame, and the second-stage telescopic ladder frame is slidably connected to the first-stage telescopic ladder frame. The telescopic ladder support rods include a first-stage support rod and a second-stage support rod. The first-stage telescopic ladder frames are fixedly connected by the first-stage support rods, and the second-stage telescopic ladder frames are fixedly connected by the second-stage support rods.

[0006] Specifically, an electric drive moving device is provided on the mobile base. The electric drive moving device includes a power supply mechanism, a drive motor, and moving wheels. The mobile base can move on the track through the moving wheels. The power supply mechanism supplies power to the drive motor, and the drive motor is drivingly connected to the moving wheels.

[0007] Specifically, anti-tipping devices are further provided on both sides of the mobile base. The anti-tipping devices include support linkages and brake-equipped moving mechanisms. The brake-equipped moving mechanisms are fixedly connected to the mobile base through the support linkages, and the brake-equipped moving mechanisms can move on the track.

[0008] Specifically, a laterally extending platform is provided on one side of the main working platform. The laterally extending platform is connected to the fixed ladder frame through platform support rods.

[0009] Specifically, extension support feet are further connected to the fixed ladder frame. The extension support feet are connected to the fixed ladder frame through connecting rods. The top ends of the extension support feet are connected to the connecting rods through connecting sliding sleeves, and the top ends of the extension support feet are rotatably connected to the connecting sliding sleeves.

[0010] Specifically, the lower part of the extension support feet is fixedly connected to the fixed ladder frame through support linkages; the support linkages are detachably connected to the extension support feet and the fixed ladder frame.

[0011] Specifically, a pantograph simulation device is further provided on the main working platform.

[0012] Specifically, both sides of the fixed ladder frame are connected through fixed support rods.

[0013] Specifically, auxiliary support rods are further provided on the telescopic ladder frame. After the telescopic ladder frame extends upward, it is fixedly connected to the main working platform through the auxiliary support rods.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. By providing a fixed ladder frame on the mobile base, a main working platform is provided on the fixed ladder frame for maintenance operations below the contact wire. At the same time, a telescopic ladder frame is also provided on the fixed ladder frame for ultra-high altitude maintenance operations above the contact wire;

[0016] 2. The telescopic ladder frame adopts a two-stage telescopic ladder frame and can be quickly extended and fixed, facilitating quickly changing the height of the ladder truck during maintenance for corresponding maintenance or movement;

[0017] 3. An electric drive moving device is provided on the mobile base, which can control the movement of the mobile base on the track to facilitate movement during maintenance.

[0018] 4. An anti-tipping device is provided on the mobile base, and a retractable extension support foot is also provided on the fixed ladder frame, which can improve the stability of the ladder truck and the safety of maintenance work during maintenance. Description of the Drawings

[0019] Appendix Figure 1 It is a schematic side structure diagram of the multifunctional ladder truck in the embodiment.

[0020] Appendix Figure 2 It is a schematic front structure diagram of the multifunctional ladder truck in the embodiment. Detailed Implementation Manner

[0021] Embodiment 1. Refer to Figure 1-2 , a multifunctional ladder truck for maintaining the overhead catenary of rail transit, including a mobile base 1, a fixed ladder frame 2, a main working platform 3 and a telescopic ladder frame 4. The fixed ladder frame 2 is fixedly arranged on the mobile base 1, the main working platform 3 is fixedly arranged on the top of the fixed ladder frame 2, the telescopic ladder frame 4 is divided into two pieces and is slidably connected to both sides of the fixed ladder frame 2, and the two telescopic ladder frames 4 are connected by a telescopic ladder frame support rod 5.

[0022] In this embodiment, the mobile base 1 can move on the track to facilitate the movement of the ladder truck during maintenance; the fixed ladder frame 2 is divided into two parts and is respectively arranged on both sides of the mobile base 1, and both sides between the two fixed ladder frames 2 are connected by fixed support rods 21; the main working platform 3 is fixedly arranged at the upper end of the fixed ladder frame 2; in addition, the telescopic ladder frame 4 is also divided into two parts and is respectively slidably connected to the outside of the fixed ladder frame 2. At the same time, both sides between the two telescopic ladder frames 4 are connected by telescopic ladder frame support rods 5, so that the telescopic ladder frame 4 can be fixedly connected by the telescopic ladder frame support rods 5 after being extended upward, improving the stability of the telescopic ladder frame 4. In order to ensure that the telescopic ladder frame 4 can provide a relatively high maintenance working height, the telescopic ladder frame 4 adopts a two-stage telescopic structure, specifically including a first-stage telescopic ladder frame 41 and a second-stage telescopic ladder frame 42. The first-stage telescopic ladder frame 41 is slidably connected to the fixed ladder frame 2, and the second-stage telescopic ladder frame 42 is slidably connected to the first-stage telescopic ladder frame 41; the telescopic ladder frame support rods 5 include a first-stage support rod 51 and a second-stage support rod 52. The first-stage telescopic ladder frames 41 are fixedly connected by the first-stage support rod 51, and the second-stage telescopic ladder frames 42 are fixedly connected by the second-stage support rod 52. In addition, in order to further improve the stability of the telescopic ladder frame 4 after being extended upward, an auxiliary support rod 53 is also arranged on the telescopic ladder frame 4. After the telescopic ladder frame 4 is extended upward, it can be fixedly connected to the main working platform 3 through the auxiliary support rod 53. For the ladder truck of this embodiment, during actual maintenance work, it can be installed at the maintenance site, and when entering and exiting the track maintenance site, the ladder truck can be disassembled into multiple parts for transportation. The specific installation process is as follows. The fixed ladder frame 2 and the mobile base 1 are assembled in a side-down state, and at the same time, the main working platform 3 is fixedly installed at the upper end of the fixed ladder frame 2. Then, the ladder truck is lifted up so that the mobile base 1 is placed on the track. The sliding connection between the telescopic ladder frame 4 and the fixed ladder frame 2 is non-detachable. After completing the above steps, the staff can climb onto the main working platform 3 of the fixed ladder frame 2 and can move to the maintenance position by controlling the movement of the mobile base 1 on the track. When ultra-high-altitude maintenance work beyond the contact wire is required, the staff can extend the telescopic ladder frame 4 outside the fixed ladder frame 2 upward and use the telescopic ladder frame support rods 5 for support and fixation, so as to ensure the stability of the staff when working on the telescopic ladder frame 4. In addition, in order to ensure the stability of the ladder truck during maintenance work, anti-tipping devices 6 are also arranged on both sides of the mobile base 1. The anti-tipping devices 6 include support connecting rods 61 and brake-equipped mobile mechanisms 62. The brake-equipped mobile mechanisms 62 are fixedly connected to the mobile base 1 through the support connecting rods 61. The brake-equipped mobile mechanisms 62 can move on the track. When maintenance work is required, the brake-equipped mobile mechanisms 62 can be braked. At this time, the anti-tipping devices 6 can provide stable support for the mobile base 1 and prevent the mobile base 1 from sliding on the track.Specifically, in this embodiment, an electric drive moving device 7 is provided on the moving base 1. The electric drive moving device 7 includes a power supply mechanism 71, a drive motor 72, and moving wheels 73. The moving base 1 can move on the track through the moving wheels 73. The power supply mechanism 71 supplies power to the drive motor 72, and the drive motor 72 is drivingly connected to the moving wheels 73.

[0023] In order to further improve the maintenance process, especially the stability of the ladder truck during maintenance work when the telescopic ladder frame 4 is extended, an extended support foot 8 is also connected to the fixed ladder frame 2. The extended support foot 8 is connected to the fixed ladder frame 2 through a connecting rod 22. The top end of the extended support foot 8 is connected to the connecting rod 22 through a connecting sliding sleeve 81, and the top end of the extended support foot 8 is rotatably connected to the connecting sliding sleeve 81. The extended support foot 8 can be retracted or lowered by sliding up and down along the connecting rod 22 through the connecting sliding sleeve 81, so as to facilitate the setting of the extended support foot 8. Among them, the lower part of the extended support foot 8 is fixedly connected to the fixed ladder frame 2 through a support connecting rod 82; the support connecting rod 82 is detachably connected to the extended support foot 8 and the fixed ladder frame 2.

[0024] In addition, the ladder truck of this embodiment is also convenient for expansion according to actual needs. For example, a horizontally extended platform 31 can be provided on one side of the main working platform 3. The horizontally extended platform 31 is connected to the fixed ladder frame 2 through a platform support rod 32. The horizontally extended platform 31 can widen the working range of the ladder truck and improve the efficiency of the maintenance process. Or, a pantograph simulation device 9 is provided on the main working platform 3. By using the pantograph simulation device 9, the pantograph-catenary transition state can be simulated, the catenary parameters can be finely adjusted, and the pantograph-catenary operation matching quality can be improved.

[0025] Of course, the above is only a preferred embodiment of the present invention, and it does not limit the scope of use of the present invention. Therefore, all equivalent changes made on the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional ladder car for the maintenance of the overhead catenary system of rail transit, characterized in that: It includes a mobile base, a fixed ladder frame, a main working platform and a telescopic ladder frame. The fixed ladder frame is fixedly arranged on the mobile base, the main working platform is fixedly arranged at the top of the fixed ladder frame, the telescopic ladder frame is divided into two pieces and is slidably connected to both sides of the fixed ladder frame, and the two telescopic ladder frames are connected by a telescopic ladder frame support rod.

2. The multi-functional ladder car for maintaining the overhead contact line of rail transit according to claim 1, wherein: The telescopic ladder frame includes a first-stage telescopic ladder frame and a second-stage telescopic ladder frame. The first-stage telescopic ladder frame is slidably connected to the fixed ladder frame, and the second-stage telescopic ladder frame is slidably connected to the first-stage telescopic ladder frame; the telescopic ladder frame support rod includes a first-stage support rod and a second-stage support rod. The first-stage telescopic ladder frames are fixedly connected by the first-stage support rod, and the second-stage telescopic ladder frames are fixedly connected by the second-stage support rod.

3. The multi-functional ladder car for the maintenance of the rail transit catenary according to claim 1, wherein: An electric drive moving device is arranged on the mobile base. The electric drive moving device includes a power supply mechanism, a drive motor and moving wheels. The mobile base can move on the track through the moving wheels. The power supply mechanism supplies power to the drive motor, and the drive motor is drivingly connected to the moving wheels.

4. A multi-functional ladder car for rail transit catenary maintenance according to claim 1, characterized in that: Anti-tipping devices are also arranged on both sides of the mobile base. The anti-tipping devices include support connecting rods and brake-equipped moving mechanisms. The brake-equipped moving mechanisms are fixedly connected to the mobile base through the support connecting rods, and the brake-equipped moving mechanisms can move on the track.

5. A multi-functional ladder car for maintaining an overhead contact line of rail transit, characterized in that: A laterally extending platform is arranged on one side of the main working platform. The laterally extending platform is connected to the fixed ladder frame through a platform support rod.

6. The multifunctional ladder car for the maintenance of the rail transit catenary according to claim 1, characterized in that: An extended support foot is also connected to the fixed ladder frame. The extended support foot is connected to the fixed ladder frame through a connecting rod. The top end of the extended support foot is connected to the connecting rod through a connecting sliding sleeve, and the top end of the extended support foot is rotatably connected to the connecting sliding sleeve.

7. A multi-functional ladder car for maintaining an overhead contact line of rail transit according to claim 6, characterized in that: The lower part of the extended support foot is fixedly connected to the fixed ladder frame through a support connecting rod; the support connecting rod is detachably connected to the extended support foot and the fixed ladder frame.

8. A multifunctional ladder car for the maintenance of rail transit catenary according to claim 1, characterized in that: A pantograph simulation device is also arranged on the main working platform.

9. A multi-functional ladder car for the maintenance of rail transit overhead catenary, characterized in that: Both sides of the fixed ladder frame are connected by fixed support rods.

10. A multi-functional ladder car for maintaining an overhead catenary system for rail transit according to claim 1, wherein: An auxiliary support rod is also arranged on the telescopic ladder frame. After the telescopic ladder frame extends upward, it is fixedly connected to the main working platform through the auxiliary support rod.

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