Riding wheel set system of car dumper

Abstract

The utility model belongs to the technical field of car dumper, and relates to a car dumper riding wheel set system which comprises a car inlet end riding wheel set and a car outlet end riding wheel set, each riding wheel tread on the car inlet end riding wheel set is of a narrow tread structure, and each riding wheel tread on the car outlet end riding wheel set is of a wide tread structure. Wheel body end covers are arranged at the two ends of a wheel body of the riding wheel, and the outer edges of the wheel body end covers are symmetrically provided with sweeping scrapers. An existing wheel body with the same tread width is designed to be of a structure that the tread of the wheel body at the inlet is narrow and the tread of the wheel body at the vehicle outlet end is wide, so that automatic compensation of axial deviation and deformation of the car dumper body is realized while reliable axial positioning of the car dumper body is ensured; the rail gnawing problem of the car dumper riding wheel and the annular supporting rail is effectively prevented; and through the arrangement of the sweeping scrapers, accumulated materials and dust on the two sides of the wheel body can be automatically removed, and the problems of running failure and heating of the riding wheel bearing are fundamentally solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of car tippers, and in particular relates to a supporting wheel assembly system of a car tipper. Background Art

[0002] A car tipper is a specialized device used for unloading bulk cargo train cars. It primarily consists of a large-span main car tipper and a tilting support ring that allows the main car to tilt. The tilting support ring includes an end ring body and an annular support track at the bottom of the end ring body. Each annular support track is equipped with a roller assembly mounted on a roller beam at the bottom of each annular support track.

[0003] The two tilting support rings are symmetrically arranged front and back. The main tipper passes through the two tilting support rings and performs a reciprocating tilting motion between the two tilting support rings, thereby driving the car body fixed to the main tipper to rotate and realize the material unloading operation. The supporting roller assembly supports and positions the tipper. Therefore, the working condition of the supporting roller assembly is directly related to the long-term and stable operation of the tipper.

[0004] The existing dumper wheel assembly has the following defects and deficiencies in practical applications:

[0005] 1. The two front and rear roller groups, namely the roller group at the car dumper inlet end and the roller group at the car dumper outlet end, together constitute the roller group system. The rollers in the existing roller group system are all designed with narrow treads. Although the narrow tread structure has good positioning performance for the annular support track, due to the long axial dimension of the dumper body, especially the 36-48 meters long three-car or four-car dumper, when shrinkage and deformation occur due to temperature changes and self-deformation, the track side and the roller wheel rim are prone to sticking (rail gnawing), causing component wear and increasing the driving load, affecting service life and operational stability.

[0006] 2. Since the unloaded materials are bulk materials, such as coal or ore, in actual operating conditions, dust from some of the unloaded materials continuously accumulates around the supporting rollers, causing the supporting rollers to be wrapped in dust for a long time, which in turn causes the dust to gradually penetrate into the bearings of the supporting roller assembly, causing bearing failure;

[0007] In addition, the material dust accumulated on the outside of the roller assembly, due to its own moisture content and the effect of water spray, easily forms a hard covering layer, which wraps around the roller assembly, causing friction between the wheel body and the covering layer to generate heat, and at the same time causing the heat generated by the operation of the roller to be unable to be effectively dissipated.

[0008] Under the dual effects of dust pollution and poor heat dissipation, the failure rate of the grease and bearings of the roller group is significantly increased, resulting in the gradual intrusion of dust into the bearings of the roller group, abnormal increase in operating temperature, and finally complete seizure and failure of the bearings, which seriously affects the service life of the roller group and increases the frequency of replacement and maintenance of the roller group, causing adverse effects on unloading operations, equipment operation safety and maintenance costs. Summary of the Invention

[0009] The purpose of the present utility model is to provide a dumper supporting wheel assembly system to overcome the problems raised in the above background technology.

[0010] The utility model solves the technical problem by adopting the following technical solutions:

[0011] A dumper wheel assembly system includes an inlet-end wheel assembly and an outlet-end wheel assembly, characterized in that: each wheel tread on the inlet-end wheel assembly is a narrow tread structure, the width of the narrow tread structure is adapted to the width of the annular support track at the bottom of the tipping support ring; each wheel tread on the outlet-end wheel assembly is a wide tread structure, the width of the wide tread structure is appropriately larger than the width of the annular support track at the bottom of the tipping support ring;

[0012] Wheel end covers are provided at both ends of the wheel body of the supporting wheel. The wheel end covers are structures with cleaning scrapers provided opposite to each other at their outer edges. Each cleaning scraper extends out and covers the material receiving area at both ends of the wheel body.

[0013] Moreover, the supporting wheel includes a wheel body, a wheel body support pin, a sleeve, a support bearing, a wheel body end cover and a sleeve end cover. The sleeve, support bearing and wheel body are sequentially mounted on the wheel body support pin from the inside to the outside, and the wheel body end cover and sleeve end cover are sequentially mounted on both ends of the wheel body support pin from the inside to the outside. The wheel body end cover is fixed to the side end of the wheel body by screws, and the sleeve end cover is fixed to the side end of the sleeve by screws.

[0014] Moreover, it also includes a sealing mechanism, which includes a rotating dustproof sealing ring, a first fixed dustproof sealing ring and a second fixed dustproof sealing ring. Three circles of grooves are provided on the outer side of the wheel body end cover, and the first fixed dustproof sealing ring is installed in the middle groove. The inner side surface of the sleeve end cover is provided with an assembly protrusion that is installed at the inner and outer grooves of the wheel body end cover. A circle of rotating dustproof sealing ring is provided between the outer edge of the sleeve end cover and the inner wall of the outer ring groove of the wheel body end cover, and a second fixed dustproof sealing ring is provided between the sleeve end cover and the sleeve.

[0015] Moreover, it also includes a floating support frame, which includes a mounting base, a primary balance beam and a secondary balance beam. The primary balance beam is hingedly mounted on the mounting base, secondary balance beams are hingedly mounted at both ends of the primary balance beam, and supporting wheels are rotatably mounted at both ends of the secondary balance beam.

[0016] The advantages and positive effects of the utility model are:

[0017] 1. This car tipper supporting wheel system, by designing the existing wheel bodies with equal tread width into a structure with a narrow tread on the inlet end and a wide tread on the outlet end, ensures reliable axial positioning of the car tipper body while automatically compensating for axial deformation of the car tipper body, effectively preventing the occurrence of gnawing between the supporting wheels of the car tipper and the annular support rail.

[0018] By setting the cleaning scraper, when the supporting roller is in reciprocating rotation, the scraper rotates synchronously with the wheel body, cleaning the accumulated materials and dust on both sides of the wheel body in real time, thereby preventing the wheel body from being in a state of accumulation and coverage of accumulated materials and dust for a long time, and fundamentally solving the problems of failure and heating of the supporting roller bearing.

[0019] The improved dumper wheel assembly system has increased the service life of the supporting bearings to at least twice the original length. In addition, it has effectively saved the daily cleaning work after the wheel assembly is covered with dust, greatly reducing the labor efficiency of workers.

[0020] 2. The wheel assembly system of this car tipper avoids dust accumulation affecting the movement of the wheel body through the setting of the sealing mechanism, and effectively blocks dust from entering the bearing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model (assembled with the flip support ring and the roller beam);

[0022] Figure 2 This is a structural diagram of the upper supporting roller of the inlet-end supporting roller assembly of the utility model (narrow tread);

[0023] Figure 3 This is a structural diagram of the upper roller of the exit roller assembly of the utility model (wide tread);

[0024] Figure 4 for Figure 3 A magnified view of part A;

[0025] Figure 5 This is a schematic diagram of the structure of the utility model in which the supporting wheel is assembled on the floating support frame;

[0026] Figure 6 This is a front view of the supporting wheel of the utility model;

[0027] Figure 7This is a structural diagram of the utility model assembled with a tipper (the arrow in the figure indicates the direction of travel of the tipper).

[0028] Description of Reference Numerals

[0029] 1- roller beam, 2- floating support frame, 3- supporting roller, 4- flip support ring, 5- annular support track, 6- wheel body, 7- cleaning scraper, 8- wheel body end cover, 9- wheel body support pin, 10- bushing end cover, 11- tread, 12- bushing, 13- rotating dustproof sealing ring, 14- first fixed dustproof sealing ring, 15- second fixed dustproof sealing ring, 16- mounting base, 17- first balance beam, 18- second balance beam, 19- inlet end supporting roller group, 20- dumper main engine and car skin to be unloaded, 21- outlet end supporting roller group, 22- support bearing, 23- wear-resistant plate. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0032] A dumper roller assembly system includes an inlet-end roller assembly 19 and an outlet-end roller assembly 21. The innovation lies in: the treads of each roller 3 on the inlet-end roller assembly are narrow, the width of which matches the width of the annular support track 5 at the bottom of the tipping support ring 4; and the treads 11 on the outlet-end roller assembly are wide, the width of which is appropriately greater than the width of the annular support track at the bottom of the tipping support ring.

[0033] like Figure 7 As shown, this is the running direction of the car tipper. The main body of the car tipper and the car skin 20 to be unloaded pass through the car tipper. The roller group located at the entry end of the car tipper is the entry end roller group, and the roller group located at the exit end of the car tipper is the exit end roller group. The tread of the entry end roller group adopts a structure with flanges on both sides, and the tread between the two flanges forms an axially fixed narrow tread. The tread of the exit end roller group adopts a structure with flanges on both sides, and the tread between the two flanges forms an axially movable wide tread. That is, the entry end roller group is the axial positioning fixed end of the car tipper, and the exit end roller group is the axial positioning free end of the car tipper. The narrow tread roller realizes effective axial positioning (fixed support) of the car body of the car tipper, and the wide tread adopts floating support for the car body to realize axial deformation compensation for the car body of the car tipper, effectively preventing the occurrence of the problem of the tipper roller and the end ring track biting the rail.

[0034] Wheel end covers 8 are provided at both ends of the wheel body of the supporting roller. The wheel end covers are structures with cleaning scrapers 7 arranged relatively on their outer edges. Each cleaning scraper extends out and covers the material-carrying area on both sides of the wheel body. In order to increase the strength of the cleaning scraper, wear-resistant plates 23 are provided on the inner and outer sides of the cleaning scraper.

[0035] like Figure 2 or Figure 3 As shown, the working parts on the front and back sides of the cleaning scraper are an overall widened plate structure, which does not interfere with the roller frame when rotating with it; the widened plate structure can effectively increase the cleaning area, and achieve the maximum cleaning effect on the accumulated materials and coal dust in the areas on both sides of the wheel body and the shaft sleeve end cover; at the same time, the cleaning parts on the front and back sides of the cleaning scraper are provided with detachable wear-resistant plates, which are fixed to the cleaning scraper body by countersunk screws, and when the wear-resistant plates are worn to the limit, they can be disassembled and replaced to protect the cleaning scraper body from abnormal wear.

[0036] During the reciprocating flipping process of the tipping machine from the horizontal zero position to the maximum tilt angle and then from the maximum tilt angle back to the horizontal zero position, the cleaning scraper can perform reciprocating follow-up rotation motion synchronously with the supporting roller. The working part of the cleaning scraper can synchronously clean the accumulated materials and dust on both sides of the wheel body, thereby avoiding the wheel body being in a long-term accumulation and coverage condition of accumulated materials and dust, and fundamentally solving the problem of operating failure and heating of the supporting roller bearing caused by dust intrusion and accumulation.

[0037] The supporting wheel includes a wheel body 6, a wheel body support pin shaft 9, a sleeve 12, a support bearing 22, a wheel body end cover and a sleeve end cover 10. The sleeve, support bearing and wheel body are sequentially mounted on the wheel body support pin shaft from the inside to the outside, and the wheel body end cover and sleeve end cover are sequentially mounted on both ends of the wheel body support pin shaft from the inside to the outside. The wheel body end cover is fixed to the side end of the wheel body by screws, and the sleeve end cover is fixed to the side end of the sleeve by screws.

[0038] The bearing assembly further includes a sealing mechanism comprising a rotating dustproof seal 13, a first fixed dustproof seal 14, and a second fixed dustproof seal 15. The outer side of the wheel end cap is provided with three circles of labyrinthine grooves, with the first fixed dustproof seal fitted in the middle groove. The inner side of the shaft sleeve end cap is provided with mounting protrusions that fit into the inner and outer grooves of the wheel end cap. A rotating dustproof seal is provided between the outer edge of the shaft sleeve end cap and the inner wall of the outer groove of the wheel end cap. A second fixed dustproof seal is provided between the shaft sleeve end cap and the shaft sleeve. The labyrinthine end cap structure and the cooperation of the rotating dustproof seal, the first fixed dustproof seal, and the second fixed dustproof seal effectively prevent dust from entering the bearing chamber through this portion.

[0039] It also includes a floating support frame 2, which includes a mounting base 16, a primary balance beam 17 and a secondary balance beam 18. The primary balance beam is hingedly installed on the mounting base, and secondary balance beams are hingedly installed at both ends of the primary balance beam. Support wheels are rotatably installed at both ends of the secondary balance beam. The mounting base is installed on the roller beam 1.

[0040] The cleaning scraper can clean dust and materials covering both sides of the wheel end face as it reciprocates in forward and reverse rotation with the supporting roller, preventing dust and materials from covering both sides of the wheel end face for a long time. This successfully solves the problem of dust intrusion, poor heat dissipation, and high temperature caused by long-term dust accumulation on the wheel body. It also significantly improves the problem of dust intrusion and grease aging, which can lead to dust jamming and lubrication failure in the wheel set bearings.

[0041] Taking the Qingang Coal Phase IV three-car dumper as an example, the main dumper is 36 meters long, with an axial span of 24 meters for the end ring support roller assembly at the entry and exit. To address shrinkage and structural deformation caused by temperature fluctuations, as well as deviations in center distance during processing and installation, a structural design with a narrow, axially fixed tread at the entry end (track tread width: 150mm, fixed-end supporting roller tread width designed: 162mm) and a wide, axially floating tread at the exit end (track tread width: 150mm, fixed-end supporting roller tread width designed: 180mm) creates a fixed end and a free end. The narrow inlet supporting roller provides effective axial positioning (fixed support) for the car body, while the wide outlet supporting roller provides axial floating support for the car body. This automatically compensates for axial deformation and dimensional deviations of the dumper's main beam, successfully resolving the issue of the end ring track side and supporting roller flange sticking (rail gnawing) under these operating conditions.

[0042] The structure of the wheel assembly of the tipping machine described in this new invention can effectively improve the service life of the bearing, prevent dust from covering the end face area of ​​the wheel body for a long time, realize the axial temperature difference and deformation compensation and reliable positioning of the large-span tipping machine support structure, ensure the long-term stable operation of the tipping machine, and provide reliable equipment guarantee for loading and unloading production.

[0043] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A dumper wheel assembly system, comprising a vehicle entry-end wheel assembly and a vehicle exit-end wheel assembly, characterized in that: The treads of each supporting roller on the inlet-end supporting roller assembly are narrow, and the width of the narrow tread structure is adapted to the width of the annular support track at the bottom of the flip support ring; the treads of each supporting roller on the outlet-end supporting roller assembly are wide, and the width of the wide tread structure is greater than the width of the annular support track at the bottom of the flip support ring; Wheel body end covers are provided at both ends of the wheel body of the supporting wheel. The wheel body end covers are structures with cleaning scrapers provided opposite to each other at the outer edges thereof. Each cleaning scraper extends out and covers the wheel body.

2. The tipper wheel assembly system according to claim 1, characterized in that: The supporting wheel includes a wheel body, a wheel body support pin, a sleeve, a support bearing, a wheel body end cover and a sleeve end cover. The sleeve, support bearing and wheel body are sequentially mounted on the wheel body support pin from the inside to the outside. The wheel body end cover and the sleeve end cover are sequentially mounted on both ends of the wheel body support pin from the inside to the outside. The wheel body end cover is fixed to the side end of the wheel body by screws, and the sleeve end cover is fixed to the side end of the sleeve by screws.

3. The dumper supporting wheel assembly system according to claim 2, characterized in that: It also includes a sealing mechanism, which includes a rotating dustproof sealing ring, a first fixed dustproof sealing ring and a second fixed dustproof sealing ring. Three circles of grooves are provided on the outer side of the wheel body end cover, and the first fixed dustproof sealing ring is installed in the middle groove. The inner side surface of the sleeve end cover is provided with an assembly protrusion that is assembled at the inner and outer grooves of the wheel body end cover. A circle of rotating dustproof sealing ring is provided between the outer edge of the sleeve end cover and the inner wall of the outer ring groove of the wheel body end cover, and a second fixed dustproof sealing ring is provided between the sleeve end cover and the sleeve.

4. The dumper supporting wheel assembly system according to claim 1, characterized in that: It also includes a floating support frame, which includes a mounting base, a primary balance beam and a secondary balance beam. The primary balance beam is hingedly mounted on the mounting base, secondary balance beams are hingedly mounted at both ends of the primary balance beam, and supporting wheels are rotatably mounted at both ends of the secondary balance beam.

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