Maintenance-free scraper conveyor chain wheel assembly
By adopting maintenance-free bearings and oil seals in the sprocket assembly of the mining scraper conveyor, the problems of oil leakage and frequent oiling of the sprocket assembly have been solved, achieving long service life of the sprocket assembly and reducing the labor intensity of workers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-20
AI Technical Summary
Existing mining scraper conveyor sprocket assemblies are prone to oil leakage in the harsh underground environment, leading to frequent replacements and repeated daily oiling, which increases the labor intensity of workers.
It adopts a maintenance-free bearing and oil seal structure, combined with a felt ring design, to avoid oil leakage problems in the floating seal ring in the sprocket assembly. The maintenance-free bearing and grease lubrication reduce maintenance work.
This achieves long-life operation of the sprocket assembly, reduces the maintenance frequency and labor intensity of downhole workers, and reduces the trouble of oil leaks and repeated oil injections.
Smart Images
Figure CN224014633U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of mine scraper conveyor, concretely relates to maintenance -free scraper conveyor sprocket assembly. BACKGROUND
[0002] The sprocket assembly is the core component of the scraper conveyor, the torque transmitted by the motor is transmitted to the sprocket assembly through the speed reducer, the sprocket assembly drives the scraper to move, the movement of the scraper drives the coal mined by the coal mining machine to be transported out of the working face, and the damage of the sprocket assembly directly causes the shutdown of the working face, which seriously affects the output of the coal mine. The lubrication mode of the sprocket assembly is mainly thin oil lubrication at present, and the biggest problem of the lubrication mode is that the poor working environment in the mine causes the failure of the floating seal ring, causes the oil leakage of the sprocket, and the sprocket needs to be replaced with a new sprocket assembly, which increases the labor intensity of the workers in the mine. In order to avoid the oil leakage problem of the thin oil lubrication, the grease lubrication sprocket assembly is designed, the lubrication mode avoids the occurrence of the oil leakage problem, but the workers need to inject oil into the sprocket assembly by the oil injection pump every day, and the work is repeated every day. The application solves the problems of sprocket oil leakage and daily repeated oil injection by arranging the maintenance-free bearing in the sprocket assembly, and reduces the labor intensity of the workers in the mine. SUMMARY
[0003] The utility model discloses a maintenance -free scraper conveyor sprocket assembly, solves the problem of sprocket oil leakage and daily repeated oil injection.
[0004] The maintenance -free scraper conveyor sprocket assembly includes a sprocket body, a sprocket shaft, a felt ring, an oil seal, a maintenance -free bearing, a bearing seat and a transparent cover, the sprocket body is connected with the sprocket shaft through a key, the felt ring and the oil seal are arranged in the bearing seat, the inner ring of the maintenance -free bearing is matched with the sprocket shaft, the outer ring is matched with the bearing seat, one side of the transparent cover abuts against the maintenance -free bearing, and the other side is connected with the bearing seat through bolts, since the maintenance -free bearing is arranged inside, the sprocket does not need to be injected with oil every day during operation.
[0005] The two oil seals and the felt ring replace the floating seal ring assembly in the sprocket assembly, and the cost is reduced.
[0006] The labyrinth is added between the sprocket body and the bearing seat to prevent part of the coal powder from passing through the felt ring, damaging the oil seal and entering the lubricating cavity and damaging the maintenance -free bearing.
[0007] The service life of the maintenance -free bearing is greater than 20,000 hours.
[0008] The application solves the problems of sprocket oil leakage and daily repeated oil injection by arranging the maintenance -free bearing in the sprocket assembly, and reduces the labor intensity of the workers in the mine. BRIEF DESCRIPTION OF DRAWINGS
[0009] The utility model will be further described below by the drawings and examples
[0010] Figure 1 is the main view and top view structure schematic diagram of the utility model
[0011] 1, chain wheel body, 2, chain wheel shaft, 3, felt ring, 4, oil seal, 5, maintenance-free bearing, 6, bearing seat, 7, transparent cover. DETAILED DESCRIPTION
[0012] In Figure 1 , chain wheel body 1 is coupled with chain wheel shaft 2 through key, felt ring 3 is arranged inside bearing seat 6, plays dustproof effect, one oil seal 4 is arranged inside bearing seat 7, another is arranged inside transparent cover 7, maintenance-free bearing 5 inner ring is matched with chain wheel shaft 2, outer ring is matched with bearing seat 6, transparent cover 7 is coupled with bearing seat 6 through bolt.In initial installation, the space of two oil seals 4 is filled with lubricating grease, and the lubricating grease is used to ensure that maintenance-free bearing 5 runs in a relatively clean environment, thereby prolonging service life.Felt ring 3 is dustproof, prevents coal powder from entering and damaging the operation of oil seal 4.This chain wheel assembly arranged with maintenance-free bearing avoids a large number of disassembly work caused by chain wheel oil leakage, does not need daily oiling maintenance, and greatly reduces the labor intensity of underground workers.
Claims
1. A maintenance-free scraper conveyor sprocket assembly, characterized in that, Includes a sprocket body (1), a sprocket shaft (2), a felt ring (3), an oil seal (4), a maintenance-free bearing (5), a bearing housing (6), and a cover (7). The sprocket body (1) and the sprocket shaft (2) are connected by a key. The felt ring (3) and the oil seal (4) are arranged inside the bearing housing (6). The inner ring of the maintenance-free bearing (5) is fitted with the sprocket shaft (2), and the outer ring is fitted with the bearing housing (6). One side of the cover (7) presses against the maintenance-free bearing (5), and the other side is connected to the bearing housing (6) by bolts.
2. The maintenance-free scraper conveyor sprocket assembly according to claim 1, characterized in that, The floating seal ring assembly inside the sprocket assembly is replaced by two oil seals (4) and a felt ring (3).
3. The maintenance-free scraper conveyor sprocket assembly according to claim 1, characterized in that, The sprocket body (1) and bearing housing (6) are connected to a maze.