CN-121974268-A - Railway automatic dumping car hinge pin replacement device and implementation method

CN121974268ACN 121974268 ACN121974268 ACN 121974268ACN-121974268-A

Abstract

The invention relates to the technical field of railway vehicle maintenance equipment, in particular to a railway automatic dumping car hinge pin replacement device and an implementation method; according to the technical scheme, the railway automatic dumping car hinge pin replacement device comprises a moving trolley, rollers are arranged at four corners of the bottom surface of the moving trolley, an anti-slip block is arranged at the front end of the bottom surface of the moving trolley, an electric push rod is arranged in the anti-slip block, and a fixed block is arranged on the surface of the moving trolley.

Inventors

YU SHIFENG
YIN FEI
XU YUYONG
TAN SHANGYU
DING JIAJUN
CAO LEI
LI JINGPENG
WANG ZHEN
ZHAI BINGYAN
ZHANG JIAN
ZUO JUN

Assignees

安徽马钢矿业资源集团南山矿业有限公司

Dates

Publication Date: 20260505
Application Date: 20260304

Claims (10)

1. A railway automatic dumping car hinge pin replacement device is characterized by comprising a moving trolley (1), wherein rollers (13) are arranged at four corners of the bottom surface of the moving trolley (1), an anti-slip block (10) is arranged at the front end of the bottom surface of the moving trolley (1), an electric push rod is arranged in the anti-slip block (10), a fixed block (15) is arranged on the surface of the moving trolley (1), a lifting platform (2) is arranged at the top end of the fixed block (15), hydraulic telescopic rods (12) are arranged at four corners of the inner part of the fixed block (15), the hydraulic telescopic rods (12) are connected with bottom clamping grooves of the lifting platform (2), and the fixed block (15) is welded and fixed with the moving trolley (1).
2. The railway automatic dumping car hinge pin replacement device according to claim 1, wherein an upright post (4) is welded on the surface of the lifting platform (2), a first jack (6) is arranged at the top end of the lifting platform (2), a hydraulic station (3) is arranged on one side of the upright post (4), an electrical control cabinet (5) is arranged on one side of the upright post (4), a control screen (9) is arranged on the surface of the electrical control cabinet (5), and the control screen (9) is used for controlling an electric push rod arranged in a hydraulic telescopic rod (12) and an anti-sliding block (10) to work.
3. The railway automatic dumping car hinge pin replacing device according to claim 2, wherein a second jack (7) is arranged at the top end of one side of the upright post (4), a bracket (8) is welded on one side of the upright post (4), the bracket (8) is positioned on two sides of the second jack (7), the bracket (8) is used for dragging an automatic dumping car hinge and preventing the automatic dumping car hinge pin from falling off, an automatic dumping car hinge pin fixing ring (11) is hung on the inner side of the bracket (8), and the automatic dumping car hinge pin fixing ring (11) is hooked into a car box bottom side section bar.
4. A device for replacing a folding pin of a railway automatic dumper according to claim 3, wherein the first jack (6) is used for supporting a roller of the automatic dumper longitudinally, the second jack (7) is used for supporting the outer edge of the folding pin of the automatic dumper horizontally, and the hydraulic station (3) is used for providing hydraulic power for the first jack (6), the second jack (7) and the hydraulic telescopic rod (12).
5. The device for replacing the folding pin of the railway automatic dumper according to claim 1, wherein the anti-skid block (10) stretches out through a built-in electric push rod to be contacted with the ground so as to prevent the trolley from sliding, and the hydraulic telescopic rod (12) is used for adjusting the height of the lifting platform (2) through telescopic adjustment so as to adapt to the replacement operation of the folding pin of the automatic dumper with different heights.
6. The device for replacing the folding pin of the railway automatic dumper according to claim 2, wherein an electric control cabinet (5) integrally controls starting and stopping of the hydraulic station (3), telescopic actions of the first jack (6) and the second jack (7), lifting adjustment of the hydraulic telescopic rod (12) and telescopic control of an electric push rod arranged in the anti-slip block (10), and a control screen (9) is used for displaying working states and parameters of all execution components.
7. The device for replacing the hinge pin of the railway automatic dumper according to claim 3, wherein the bracket (8) is of a U-shaped structural design, the opening direction of the bracket faces the hinge of the automatic dumper, a rubber anti-slip layer is arranged on the inner wall of the bracket (8), and the hinge pin fixing ring (11) of the automatic dumper is of an adjustable clamp structure and meets the hinge pin fixing requirements of different diameters.
8. The device for replacing the folding pin of the railway automatic dumper according to claim 4, wherein the first jack (6) and the second jack (7) are two-way hydraulic jacks, the stroke can be adjusted steplessly through the flow control of the hydraulic station (3), and the device is suitable for the size difference of the folding pin of the automatic dumper with different specifications.
9. The device for replacing the folding pin of the railway automatic dumper according to claim 1 is characterized in that a level gauge is arranged at the bottom end of the moving trolley (1) and used for detecting the levelness of the device, and data of the level gauge are synchronously displayed on the control screen (9) for an operator to monitor in real time.
10. The device for replacing the hinge pin of the railway automatic dumper according to any one of claims 1 to 9, is characterized by comprising the following steps: S11, manually pushing the mobile trolley (1) to a proper position below the automatic dumping car hinge by an operator, enabling the longitudinal axis of the device to be basically aligned with the axis of the automatic dumping car roller, starting an anti-slip structure through the control screen (9), pushing the anti-slip block (10) to extend downwards by the electric push rod until the anti-slip block is compacted with the ground and reaches a preset pressure value, and displaying anti-slip locked through the control screen (9); S12, inputting a target height on the control screen (9), starting a lifting function, synchronously lifting the hydraulic telescopic rod (12) to drive the lifting platform (2) to stably lift, observing level data in the process, and ensuring that the platform keeps level and the bracket (8) is slightly lower than the lower edge of the hinge pin fixing ring (11) after the platform is lifted to the target height; S13, firstly, operating a first jack (6) to slowly lift, enabling a top of the jack to be in contact with the lower surface of the automatic dumping roller and exerting proper pre-jacking force, then operating a second jack (7) to horizontally lift, enabling the top of the jack to be attached to the outer side face of the hinge and exert stable lateral supporting force, finally adjusting the position of a bracket (8), clamping a fixing ring (11) into the root of a hinge pin and hooking into a profile groove at the bottom side of the vehicle box, and completing three-point stable support; S14, using a manual or hydraulic wrench to disassemble an original hinge pin fixing bolt, lightly knocking or using a pin puller to take out an old hinge pin, checking whether a pin hole is intact, cleaning residual abrasion, coating lubricating grease on a new hinge pin, aligning the new hinge pin with the pin hole, lightly knocking in place by using a rubber hammer, installing a fixing ring (11) and fastening the bolt, and confirming that the hinge is flexible to rotate and free of clamping stagnation; And S15, sequentially operating the second jack (7) and the first jack (6) to retract, releasing the supporting of the hinge, loosening the bolts of the fixed ring (11), taking out the bolts from the bracket (8), lowering the lifting platform (2) to the lowest position through the control screen (9), retracting the anti-skid blocks (10), and manually pushing the movable trolley (1) away from the operation area after confirming that all the components are reset, cleaning the site and completing the replacement operation.

Description

Railway automatic dumping car hinge pin replacement device and implementation method Technical Field The invention relates to the technical field of railway vehicle maintenance equipment, in particular to a railway automatic dumping car hinge pin replacement device and an implementation method. Background The railway automatic dumping car is a common railway transport vehicle, the carriage of the railway automatic dumping car can realize automatic dumping through a hydraulic or mechanical device, the hinge pin is a key component for connecting the carriage and the underframe, the problems of abrasion, deformation and the like can occur after long-term use, and the railway automatic dumping car needs to be replaced regularly. In the prior art, when the automatic turning-over folding pin is replaced, at least five workers are required to be matched with a maintenance worker, the labor intensity is high, safety accidents are easy to be caused by matching errors, due to the lack of special tools, the maintenance worker cannot quickly complete the disassembly and assembly of the folding pin, the overall maintenance efficiency is low, the side folding pin which bears ore extrusion for a long time is easy to generate plastic deformation, five pins are difficult to keep on the same axis after the pin rolls are worn and bent, the replacement difficulty is further increased, the effective support cannot be provided for the position of a fixing ring of the folding pin in the prior art, the folding is easy to fall off or the position is offset in the replacement process, the operation safety is not only influenced, the maintenance quality is also reduced, the side of the automatic turning-over folding pin is frequently damaged, and the spare part cost is increased. According to the technical scheme, the movable trolley, the lifting platform, the hydraulic system and the electrical control cabinet are integrated into a whole, the lifting platform is carried on, the upright post is welded in the middle of the platform, the second jack is arranged on one side of the upright post to prop against the outer edge of the hinge of the automatic dumping car, the first jack is arranged on the other side of the upright post to prop against the roller of the automatic dumping car, a longitudinal and transverse bidirectional supporting structure is formed, the brackets are arranged on two sides of the second jack, the bracket can be directly hooked on the position of the hinge fixing ring of the automatic dumping car after being welded with the upright post, the hinge is effectively prevented from falling or shifting, the hydraulic system and the electrical control cabinet are integrated on the lifting platform, the hydraulic telescopic rod and the built-in electric push rod of the anti-sliding block can be accurately controlled through the control panel, the height adjustment and the stable fixation of equipment of the lifting platform are realized, the problem that the prior art needs to be temporarily spliced and built on site is avoided, the hinge falling risk is effectively avoided by embedding the brackets into the fixing ring position and fixing the periphery of the hinge pin, the stability during maintenance is improved, the bidirectional jack and the fixing ring position are cooperatively supported, so that the automatic dumping car keeps a stress balance state in the replacement process. Disclosure of Invention In order to overcome among the prior art, when changing the folding pin of the automatic dumping car, need the cooperation of at least five people of going up the worker and overhauling the worker to accomplish, not only intensity of labour is big, still easily cause the incident because of the cooperation mistake, because lack specialized tool, the dismouting of folding pin can't be accomplished fast to the maintainer, lead to whole maintenance inefficiency, bear the easy emergence plastic deformation of the easy emergence of the folding pin of ore extruded rim for a long time, after the round pin axle wearing and tearing bending, five round pins are difficult to keep on same axis, the further increase the change degree of difficulty, and prior art can not provide effective support to folding pin solid fixed ring position, fold paper in the change process and easily drop or the position skew, not only influence the operation safety, still reduced the maintenance quality, lead to the frequent damage of automatic dumping car rim, increase spare part cost's problem. The technical scheme includes that the railway automatic dumping car hinge pin replacement device comprises a moving trolley, rollers are arranged at four corners of the bottom surface of the moving trolley, an anti-skid block is arranged at the front end of the bottom surface of the moving trolley, an electric push rod is arranged in the anti-skid block, a fixed block is arranged on the surface of the moving trolley, a lifting platform is arranged at the