Train wheel set withdrawing and lifting device

Abstract

The utility model provides a train wheelset withdrawal lifting device, which comprises a track, a moving frame, a high-pressure oil cylinder, a wheel supporting mechanism, a rotary adjusting mechanism and a lifting mechanism, wheels are arranged at the bottom of the moving frame and are arranged in the track in a sliding manner, the wheel supporting mechanism is fixedly arranged above the rotary adjusting mechanism, the rotary adjusting mechanism is fixedly arranged above the lifting mechanism, and the lifting mechanism is arranged on the moving frame. The lifting mechanism is arranged on the right side of the moving frame, a limiting plate is arranged on the side, close to the supporting mechanism, of the moving frame, the limiting plate is provided with an opening structure and a semicircular inwards-concave limiting groove used for supporting an axle, the moving frame is further provided with a guide plate, the high-pressure oil cylinder is installed on the left side of the guide plate, and the guide plate is provided with a limiting hole. An ejector rod of the high-pressure oil cylinder penetrates through the limiting hole to abut against the end face of the axle. According to the lifting device for withdrawal of the train wheel set, withdrawal work of wheels on the side of a gear box of the bullet train wheel set of an urban railway vehicle can be simply, conveniently and rapidly achieved.

Description

Technical Field

[0001] This utility model relates to the field of locomotive assembly technology, specifically a train wheelset unloading and lifting device. Background Technology

[0002] During train operation, the wheelsets constantly contact and rub against the rails, inevitably causing wear. According to railway industry regulations, urban rail vehicles need to be returned to the factory for overhaul and major repairs when they reach a specified mileage or age limit. The overhaul period is 5 years or 500,000 kilometers, and the factory repair period is 10 years or 1 million kilometers. The running gear (bogie) needs to be disassembled, the wheelsets removed and pressed, and the bogies are reassembled after inspection. Urban rail vehicle wheelsets have a gearbox structure. Because the clearance between the gearbox and the wheel is too small, the existing wheelset unloading machine cannot meet the single-side wheel removal capacity of the gearbox. Therefore, specialized unloading equipment is needed for removal for inspection and maintenance. Utility Model Content

[0003] The purpose of this utility model is to provide a train wheelset unloading and lifting device to solve the technical problems in the background art.

[0004] To achieve the aforementioned objectives, this utility model provides the following technical solution:

[0005] A train wheelset unloading and lifting device includes a track, a movable frame, a high-pressure hydraulic cylinder, a wheel support mechanism, a rotation adjustment mechanism, and a lifting mechanism. A wheel is slidably mounted on the track at the bottom of the movable frame. The wheel support mechanism is fixed above the rotation adjustment mechanism, which is also fixed above the lifting mechanism. The lifting mechanism is located on the right side of the movable frame. A limiting plate is provided on the side of the movable frame near the support mechanism. The limiting plate has an open structure and a semi-circular concave limiting groove for supporting the axle. A guide plate is also provided on the movable frame. The high-pressure hydraulic cylinder is installed on the left side of the guide plate. The guide plate has a limiting hole whose axis coincides with the axis of the limiting groove. The push rod of the high-pressure hydraulic cylinder passes through the limiting hole and presses against the end face of the axle.

[0006] The wheel support mechanism includes a base frame, on which at least two sets of positioning plates are provided. The positioning plates are vertically mounted on the base frame and have an open structure and a semi-circular concave positioning groove for supporting the wheelset.

[0007] The movable frame is also equipped with a fixing seat for installing a limiting plate. The fixing seat is vertically fixed on the movable frame. The fixing seat includes a vertical plate and a bottom plate. The vertical plate is vertically fixed above the bottom plate. The bottom plate is fixedly installed with the movable frame. The limiting plate is installed on the front side of the vertical plate. The vertical plate is provided with an open structure and a semi-circular concave guide groove. The axis of the guide groove coincides with the axis of the limiting groove. The diameter of the guide groove is larger than the diameter of the limiting groove.

[0008] The front end of the vertical plate is provided with two support plates, which are vertically fixed between the base plate and the vertical plate.

[0009] The lifting mechanism is a scissor-type lifting platform, comprising an upper support platform, a hydraulic cylinder, a scissor lifting arm, and a base. The scissor lifting arm is hinged between the upper support platform and the base. The hydraulic cylinder is mounted on the scissor lifting arm. The scissor lifting arm includes two sets of cross arm assemblies, which are respectively hinged to each other via several horizontal axes. Each cross arm assembly includes an outer arm and an inner arm. One end of the outer arm is hinged to the upper support platform, and the other end is slidably connected to the base. One end of the inner arm is hinged to the base, and the other end is slidably connected to the upper support platform. A drive rod is provided between the two sets of cross arm assemblies. Both ends of the drive rod are fixedly installed to the outer arm. One end of the hydraulic cylinder is hinged to the horizontal axis, and the drive shaft at the other end is hinged to the drive rod.

[0010] Compared with the prior art, the train wheelset unloading lifting device of this application can easily and quickly realize the unloading of the wheelset gearbox side wheel of urban rail vehicles. This application adopts a lifting and rotating support structure to support the wheel support mechanism, which can flexibly adjust the height and rotate to the optimal operating angle according to actual working requirements, so as to facilitate the precise unloading of the wheels. Attached Figure Description

[0011] Figure 1 : A three-dimensional structural diagram of this application;

[0012] Figure 2 : The front view of this application;

[0013] Figure 3 Installation structure diagram of wheel support mechanism, rotation adjustment mechanism and lifting mechanism;

[0014] Figure 4 The installation and usage effect diagram of this application. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Specific Implementation Example 1: Please refer to Figures 1 to 4In this embodiment of the utility model, a train wheelset unloading and lifting device includes a track 1, a movable frame 2, a high-pressure hydraulic cylinder 3, a wheel support mechanism 9, a rotation adjustment mechanism 8, and a lifting mechanism 7. The bottom of the movable frame 2 is provided with a wheel that is slidably installed in the track 1. The wheel support mechanism 9 is fixed above the rotation adjustment mechanism 8, and the rotation adjustment mechanism 8 is fixed above the lifting mechanism 7. The lifting mechanism 7 is on the right side of the movable frame 2. A limiting plate 5 is provided on the side of the movable frame 2 near the wheel support mechanism 9. The limiting plate 5 has an open structure and a semi-circular concave limiting groove 501 for supporting the axle. The movable frame 2 is also provided with a guide plate 4. The high-pressure hydraulic cylinder 3 is installed on the left side of the guide plate 4. The guide plate 4 has a limiting hole 401. The axis of the limiting hole 401 coincides with the axis of the limiting groove 501. The push rod of the high-pressure hydraulic cylinder 3 passes through the limiting hole 401 and presses against the end face of the axle.

[0017] The wheel support mechanism 9 includes a base frame 901, on which at least two sets of positioning plates 902 are provided. The positioning plates 902 are vertically mounted on the base frame 901, and each positioning plate 902 has an open structure and a semi-circular recessed positioning groove 902-1 for supporting the wheelset. In this embodiment, three sets of positioning plates 902 are mounted on the base frame 901, and the three sets of positioning plates 902 are spaced apart and parallel to each other.

[0018] The movable frame 2 is also equipped with a fixing seat 6 for installing the limiting plate 5. The fixing seat 6 is vertically fixed to the movable frame 2 and includes a vertical plate 601 and a base plate 602. The vertical plate 601 is vertically fixed above the base plate 602, and the base plate 602 is fixedly installed to the movable frame 2. The limiting plate 5 is installed on the front side of the vertical plate 601. The vertical plate 601 has an open structure and a semi-circular concave guide groove 601-1. The axis of the guide groove 601-1 coincides with the axis of the limiting groove 501, and the diameter of the guide groove 601-1 is larger than the diameter of the limiting groove 501. Two support plates 603 are provided at the front end of the vertical plate 601, and the support plates 603 are vertically fixed between the base plate 602 and the vertical plate 601. In this embodiment, several guide rods are also installed between the vertical plate 601 and the guide plate 4. The two ends of the guide rods are fixedly installed to the vertical plate 601 and the guide plate 4 respectively. Installing guide rods between the vertical plate 601 and the guide plate 4 can make the installation on the movable frame 2 more stable and improve its stability during lateral movement.

[0019] The lifting mechanism 7 is a scissor-type lifting platform. The lifting mechanism 7 includes an upper support platform 701, a hydraulic cylinder 704, a scissor lifting arm, and a base 702. The scissor lifting arm is hinged between the upper support platform 701 and the base 702. The hydraulic cylinder 704 is mounted on the scissor lifting arm. The scissor lifting arm includes two sets of cross arm assemblies 703, which are respectively hinged to each other via several horizontal shafts 706. Each cross arm assembly 703 includes an outer arm 703-2 and an inner arm 703-2. 03-1, one end of the outer arm 703-2 is hinged to the upper support platform 701, and the other end is slidably connected to the base 702. One end of the inner arm 703-1 is hinged to the base 702, and the other end is slidably connected to the upper support platform 701. A drive rod 705 is provided between the two sets of cross arm assemblies 703. Both ends of the drive rod 705 are fixedly installed to the outer arm 703-2. One end of the hydraulic cylinder 704 is hinged to the horizontal shaft 706, and the drive shaft at the other end is hinged to the drive rod 705. When the drive rod 705 of the hydraulic cylinder 704 extends and retracts outward, it drives the entire upper support platform 701 to move up and down under the drive of the two sets of cross arm assemblies 703. The scissor-type mechanical structure gives the upper support platform 701 high stability after lifting, and the overall structure has a large range of change. In the fully retracted state, it occupies very little space, making it easy to store and operate and store in a limited space.

[0020] Workflow: Hoist wheel 10 to one side of limit plate 5, and simultaneously place wheelset assembly 11 (including gearbox) above wheel support mechanism 9. Adjust lifting mechanism 7 and rotation adjustment mechanism 8 to adjust the wheelset as a whole to the optimal unloading position of wheel 7. After the position of wheel 7 is adjusted, start the push rod of high pressure cylinder 3 to push against the end face of the axle of wheelset assembly 11 (including gearbox) (gearbox side). During the start of high pressure cylinder 3, oil is injected to unload the wheel. During the unloading process, wheel 7 will be placed in limit groove 501. Wheelet assembly 11 (including gearbox) will move with wheel support mechanism 9. Finally, after wheel 7 is unloaded, it falls onto the axle journal (the axle journal is protected by a rubber sleeve).

[0021] Compared with the prior art, the train wheelset unloading lifting device of this application can easily and quickly realize the unloading of the wheelset gearbox side wheel of urban rail vehicles. This application adopts a lifting and rotating support structure to support the wheel support mechanism, which can flexibly adjust the height and rotate to the optimal operating angle according to actual working requirements, so as to facilitate the precise unloading of the wheels.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the foregoing exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A train wheelset unloading and lifting device, characterized in that: The device includes a track, a movable frame, a high-pressure hydraulic cylinder, a wheel support mechanism, a rotation adjustment mechanism, and a lifting mechanism. The movable frame has wheels that slide within the track at its bottom. The wheel support mechanism is fixed above the rotation adjustment mechanism, which is also fixed above the lifting mechanism. The lifting mechanism is located on the right side of the movable frame. A limiting plate is located on the side of the movable frame near the support mechanism. The limiting plate has an open structure and a semi-circular recessed limiting groove for supporting the axle. A guide plate is also provided on the movable frame. The high-pressure hydraulic cylinder is installed on the left side of the guide plate. The guide plate has a limiting hole whose axis coincides with the axis of the limiting groove. The push rod of the high-pressure hydraulic cylinder passes through the limiting hole and presses against the end face of the axle.

2. The train wheelset unloading and lifting device according to claim 1, characterized in that: The wheel support mechanism includes a base frame, on which at least two sets of positioning plates are provided. The positioning plates are vertically mounted on the base frame and have an open structure and a semi-circular concave positioning groove for supporting the wheelset.

3. The train wheelset unloading and lifting device according to claim 1, characterized in that: The movable frame is also equipped with a fixing seat for installing a limiting plate. The fixing seat is vertically fixed on the movable frame. The fixing seat includes a vertical plate and a bottom plate. The vertical plate is vertically fixed above the bottom plate. The bottom plate is fixedly installed with the movable frame. The limiting plate is installed on the front side of the vertical plate. The vertical plate is provided with an open structure and a semi-circular concave guide groove. The axis of the guide groove coincides with the axis of the limiting groove. The diameter of the guide groove is larger than the diameter of the limiting groove.

4. A train wheelset unloading and lifting device according to claim 3, characterized in that: The front end of the vertical plate is provided with two support plates, which are vertically fixed between the base plate and the vertical plate.

5. A train wheelset unloading and lifting device according to claim 4, characterized in that: The lifting mechanism is a scissor-type lifting platform, comprising an upper support platform, a hydraulic cylinder, a scissor lifting arm, and a base. The scissor lifting arm is hinged between the upper support platform and the base. The hydraulic cylinder is mounted on the scissor lifting arm. The scissor lifting arm includes two sets of cross arm assemblies, which are respectively hinged to each other via several horizontal axes. Each cross arm assembly includes an outer arm and an inner arm. One end of the outer arm is hinged to the upper support platform, and the other end is slidably connected to the base. One end of the inner arm is hinged to the base, and the other end is slidably connected to the upper support platform. A drive rod is provided between the two sets of cross arm assemblies. Both ends of the drive rod are fixedly installed to the outer arm. One end of the hydraulic cylinder is hinged to the horizontal axis, and the drive shaft at the other end is hinged to the drive rod.

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