Driving wheel assembly of scraper conveyor for coal mine

Abstract

The utility model discloses a driving wheel assembly of a scraper conveyer for coal mine, which comprises a driving wheel assembly, a driving roller and a conveying belt which are arranged in the inner cavity of the scraper conveyer, the driving wheel assembly comprises a motor, the output end of the motor is fixedly connected with a driving shaft, a plurality of groups of driving plates are arranged on the outer wall of the driving shaft at intervals in the circumferential direction, and the driving plates are fixedly connected with the motor. The driving shaft comprises a mounting shaft, a plurality of adjusting rods are arranged on the outer wall of the mounting shaft at intervals, an adjusting button is arranged at the end, away from the motor, of the mounting shaft, and the adjusting button drives the adjusting rods to control the distance between the inner wall of the driving plate and the outer wall of the driving shaft so as to adjust and control the tension degree of the conveying belt. By arranging the driving wheel assembly, the tensioning degree of the conveying belt is regulated and controlled, so that the driving force of the driving wheel to the conveying belt is matched with the mass of conveyed objects, the equipment abrasion is reduced, meanwhile, the load increase caused by blockage of obstacles to the driving wheel is reduced, and the service life of the driving wheel is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of coal mine equipment technology, specifically to a drive wheel assembly for a scraper conveyor used in coal mines. Background Technology

[0002] Scraper conveyors are the main transportation equipment in fully mechanized coal mining faces. They transport the coal that has been broken down by the mining machine and fallen into the central trough to the transfer conveyor in the roadway. The transfer conveyor then transports the coal to the belt conveyor, forming a complete coal transportation pipeline that transports the coal out of the mine.

[0003] Existing scraper conveyors use scrapers and conveyor belts to form a track, transporting coal by tensioning and driving the conveyor belt. However, due to the complex environment of mines, broken coal can get stuck on the conveyor belt and the inner wall of the conveyor, causing excessive demand on the drive wheel and increasing the load on the drive wheel. Moreover, after the obstacle is removed, the drive wheel cannot smoothly transition from the high load state, resulting in the conveyor belt not being able to maintain stable transport and increasing equipment wear during the transport process. At the same time, the required tension of the conveyor belt is different when transporting coal of different weights. Existing equipment can only maintain the same tension for transport, which can lead to excessive power or slippage between the drive wheel and the conveyor belt, affecting transport efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a drive wheel assembly for a scraper conveyor in a coal mine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a drive wheel assembly for a scraper conveyor in a coal mine, including a drive wheel assembly, a drive roller, and a conveyor belt installed in the inner cavity of the scraper conveyor. The drive wheel assembly is connected to the drive roller via the conveyor belt. The drive wheel assembly includes a motor, and a drive shaft is fixedly connected to the output end of the motor. Several sets of drive plates are circumferentially spaced on the outer wall of the drive shaft. The drive shaft includes a mounting shaft, and several sets of adjusting rods are spaced on the outer wall of the mounting shaft. An adjusting knob is provided at the end of the mounting shaft opposite to the motor. The adjusting knob drives the adjusting rods to control the distance between the inner wall of the drive plate and the outer wall of the drive shaft, thereby adjusting the tension of the conveyor belt.

[0006] As a further preferred embodiment, the drive plate includes an arc-shaped plate, the arc-shaped plate having an adjustment groove inside, and spring pieces installed at intervals along the axis in the adjustment groove. Several sets of anti-slip posts are fixedly connected at intervals to the outer wall of the spring pieces, and the anti-slip posts are arranged radially and extend through the outer wall of the arc-shaped plate at one end away from the spring pieces.

[0007] As a further preferred embodiment, the drive shaft further includes an adjustment shaft, and the mounting shaft has a mounting groove. The adjustment shaft is rotatably disposed in the mounting groove, with one end passing through the mounting shaft and the other end fixedly connected to the adjustment knob. The outer wall of the adjustment shaft is provided with several sets of wedge-shaped drive teeth at intervals, and the wedge-shaped drive teeth drive the adjustment rod to rotate.

[0008] As a further preferred embodiment, the adjusting rod includes a telescopic rod, the top end of which extends radially through the mounting shaft and is threadedly connected to the mounting shaft, and the lower end of the telescopic rod is fixedly connected to a wedge-shaped driven tooth, which meshes with the wedge-shaped drive gear.

[0009] As a further preferred embodiment, the mounting block is symmetrically fixedly connected to two sets of mounting blocks on the outer wall of the inner portion of the mounting groove, and the adjacent areas of the two sets of mounting blocks are jointly fixedly connected to a spring.

[0010] As a further preferred embodiment, the mounting block includes a frustum base, and two sets of frustum bases are circumferentially rotatably connected with several sets of balls on opposite sides of each other.

[0011] Through the above technical solution, the drive wheel assembly of the scraper conveyor for coal mines provided by this utility model has the following benefits:

[0012] This utility model sets up a drive wheel assembly, and the adjustment knob drives the adjustment shaft to rotate. Through the meshing of the wedge-shaped drive teeth and the wedge-shaped driven teeth, the telescopic rod is driven to rotate. The telescopic rod is threadedly connected to the mounting shaft. The telescopic rod drives the arc plate to move closer to or away from the outer wall of the mounting shaft, thereby adjusting the tension of the conveyor belt. This makes the driving force of the drive wheel on the conveyor belt match the mass of the conveyed items, reducing equipment wear.

[0013] Meanwhile, the anti-slip posts on the outer wall of the arc plate fit against the inner wall of the conveyor belt, increasing the friction against the inner wall of the conveyor belt. When there is an obstacle on the outside of the conveyor belt that causes jamming, the external force on the conveyor belt increases, pushing the anti-slip posts to squeeze the spring sheet and deform, thereby buffering and adjusting the gap between the conveyor belt and the scraper conveyor, causing the obstacle to fall off or disengage from the gap, reducing the increased load on the drive wheel caused by the obstacle jamming, and extending the service life of the drive wheel. Attached Figure Description

[0014] Figure 1 This is a partial cross-sectional structural diagram of the scraper conveyor of this utility model.

[0015] Figure 2 This is a schematic diagram of the drive wheel assembly structure of this utility model.

[0016] Figure 3 This is a schematic diagram of a half-section of the drive board of this utility model.

[0017] Figure 4This is a cross-sectional structural diagram of the drive shaft of this utility model.

[0018] Figure 5 This is a schematic diagram of the adjusting rod structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the mounting block structure of this utility model.

[0020] In the diagram: 1. Scraper conveyor; 2. Drive wheel assembly; 21. Motor; 22. Drive plate; 221. Anti-slip column; 222. Arc plate; 223. Adjustment groove; 224. Spring; 23. Drive shaft; 231. Mounting groove; 232. Mounting shaft; 233. Adjustment shaft; 234. Adjustment knob; 235. Wedge drive tooth; 236. Adjustment rod; 2361. Telescopic rod; 2362. Mounting block; 2362-1. Frustum base; 2362-2. Ball bearing; 2363. Spring; 2364. Wedge driven tooth. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The present invention will be further described in detail with reference to the accompanying drawings.

[0023] Please see Figure 1 - Figure 6 The present invention provides a drive wheel assembly for a scraper conveyor used in coal mines, comprising a drive wheel assembly 2 and a conveyor belt installed in the inner cavity of the scraper conveyor 1.

[0024] Please refer to Figure 1 and Figure 2 The drive wheel assembly 2 includes a motor 21, which is mounted on the outer wall of the scraper conveyor 1. The output end of the motor 21 extends through the scraper conveyor 1 and is fixedly connected to a drive shaft 23. Several sets of drive plates 22 are installed at intervals on the outer wall of the drive shaft 23, and the outer wall of the drive plate 22 is connected to the conveyor belt for transmission.

[0025] It is understandable that a set of conveyor rollers is installed inside the conveyor belt. The motor 21 drives the drive shaft 23 to rotate, and the drive plate 22 is connected to the conveyor rollers through the conveyor belt to drive the conveyor belt to transport coal.

[0026] Please see Figure 3The drive plate 22 includes an arc plate 222. An adjustment groove 223 is provided inside the arc plate 222. Several sets of spring pieces 224 are installed at intervals along the axis inside the adjustment groove 223. Several sets of anti-slip columns 221 are fixedly connected at intervals to the outer wall of the spring pieces 224. The anti-slip columns 221 extend radially through the outer wall of the arc plate 222.

[0027] It should be added that when the spring piece 224 reaches its maximum deformation, both ends of the spring piece 224 abut against the two sides of the adjustment groove 223 respectively. At this time, the top of the anti-slip column 221 still extends out of the outer wall of the arc plate 222.

[0028] Please see Figures 4 to 6 The drive shaft 23 includes a mounting shaft 232 and an adjusting shaft 233. The mounting shaft 232 has a mounting groove 231 inside, which is connected to one end of the mounting shaft 232. One end of the adjusting shaft 233 is rotatably connected to the inner wall of the mounting groove 231, and the other end passes through the mounting shaft 232 and is fixedly connected to an adjusting knob 234. The output end of the motor 21 is fixedly connected to the outer wall of the mounting shaft 232 away from the adjusting knob 234, and is used to drive the mounting shaft 232 to rotate. Several sets of wedge-shaped drive teeth 235 are fixedly connected at intervals on the outer wall of the adjusting shaft 233. Several sets of adjusting rods 236 are axially spaced at the same cross-section of the outer wall of the mounting shaft 232 and the wedge-shaped drive teeth 235. The lower end of the adjusting rod 236 meshes with the wedge-shaped drive teeth 235, and the upper end of the adjusting rod 236 is rotatably connected to the inner wall of the arc plate 222.

[0029] Specifically, the adjusting rod 236 includes a telescopic rod 2361. The upper end of the telescopic rod 2361 passes through the mounting shaft 232 and is threadedly connected to the mounting shaft 232. The lower end of the telescopic rod 2361 is fixedly connected to a wedge-shaped driven tooth 2364, which is always engaged with the wedge-shaped driving tooth 235. Two sets of mounting blocks 2362 are symmetrically fixedly connected to the outer wall of the part of the telescopic rod 2361 located in the mounting groove 231. The adjacent areas of the two sets of mounting blocks 2362 are jointly fixedly connected to a spring 2363.

[0030] Furthermore, the mounting block 2362 includes a frustum 2362-1, and two sets of frustums 2362-1 are rotatably connected to each other with a number of sets of balls 2362-2 on opposite sides.

[0031] It should be noted that the telescopic rod 2361 is divided into an inner rod and an outer rod. The top of the inner rod is slidably connected to the inner wall of the outer rod along the axis. The outer rod is threadedly connected to the mounting shaft 232. The bottom of the inner rod is fixedly connected to the wedge-shaped driven tooth 2364. Two sets of frustum seats 2362-1 are respectively installed at the bottom of the outer rod and the bottom of the inner rod. The rotating balls 2362-2 abut against the inner wall of the mounting groove 231 and the top of the wedge-shaped driven tooth 2364 to reduce the friction between the two ends of the mounting block 2362 and the inner wall of the mounting groove 231 and the top of the wedge-shaped driven tooth 2364 during rotation.

[0032] Principle: Rotating the adjustment knob 234 drives the wedge-shaped drive tooth 235 to rotate via the adjustment shaft 233. The wedge-shaped drive tooth 235 meshes with the wedge-shaped driven tooth 2364, causing the telescopic rod 2361 to move radially along the mounting shaft 232. When the telescopic rod 2361 moves, it causes the arc plate 222 to move closer to or away from the outer wall of the mounting shaft 232. Since the conveyor belt is connected to the outer wall of the arc plate 222, the tension of the conveyor belt can be adjusted by controlling the enclosing diameter of the arc plate 222 to adapt to different conveying volumes, reduce equipment damage, and save conveying power. At the same time, when an obstacle appears in the gap between the conveyor belt and the scraper conveyor 1, the increased stress pushes the anti-slip column 221 to compress the spring 224 and move it closer to the axis of the adjustment groove 223. This buffers the stress caused by the obstacle and adjusts the gap between the conveyor belt and the scraper conveyor 1, causing the obstacle to fall off or disengage from the gap, reducing the wear on the drive wheel assembly when the obstacle jams the conveyor belt.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drive wheel assembly for a scraper conveyor in a coal mine, comprising a drive wheel assembly (2) installed in the inner cavity of the scraper conveyor (1), a drive roller, and a conveyor belt, wherein the drive wheel assembly (2) is connected to the drive roller via the conveyor belt, characterized in that: The drive wheel assembly (2) includes a motor (21), the output end of which is fixedly connected to a drive shaft (23). Several sets of drive plates (22) are circumferentially installed on the outer wall of the drive shaft (23). The drive shaft (23) includes a mounting shaft (232). Several sets of adjusting rods (236) are spaced apart on the outer wall of the mounting shaft (232). An adjusting knob (234) is provided at the end of the mounting shaft (232) away from the motor (21). The adjusting knob (234) drives the adjusting rods (236) to control the distance between the inner wall of the drive plate (22) and the outer wall of the drive shaft (23), thereby adjusting the tension of the conveyor belt.

2. The drive wheel assembly of the scraper conveyor for coal mines according to claim 1, characterized in that: The drive plate (22) includes an arc-shaped plate (222), an adjustment groove (223) is provided inside the arc-shaped plate (222), and spring pieces (224) are installed at intervals along the axis in the adjustment groove (223). Several sets of anti-slip columns (221) are fixedly connected at intervals on the outer wall of the spring pieces (224). The anti-slip columns (221) are arranged radially and extend through the outer wall of the arc-shaped plate (222) at one end away from the spring pieces (224).

3. The drive wheel assembly of the scraper conveyor for coal mines according to claim 2, characterized in that: The drive shaft (23) also includes an adjustment shaft (233). The mounting shaft (232) has a mounting groove (231) inside. The adjustment shaft (233) is rotatably disposed in the mounting groove (231) and one end passes through the mounting shaft (232) while the other end is fixedly connected to the adjustment knob (234). The outer wall of the adjustment shaft (233) is provided with several sets of wedge-shaped drive teeth (235) at intervals. The wedge-shaped drive teeth (235) drive the adjustment rod (236) to rotate.

4. The drive wheel assembly of the scraper conveyor for coal mines according to claim 3, characterized in that: The adjusting rod (236) includes a telescopic rod (2361), the top end of which extends radially through the mounting shaft (232) and is threadedly connected to the mounting shaft (232). The lower end of the telescopic rod (2361) is fixedly connected to a wedge-shaped driven tooth (2364), which meshes with the wedge-shaped drive tooth (235).

5. The drive wheel assembly of the scraper conveyor for coal mines according to claim 4, characterized in that: The mounting block (2362) is located in the inner part of the mounting groove (231) and two sets of mounting blocks (2362) are symmetrically fixedly connected to the outer wall. The adjacent areas of the two sets of mounting blocks (2362) are jointly fixedly connected to a spring (2363).

6. The drive wheel assembly of the scraper conveyor for coal mines according to claim 5, characterized in that: The mounting block (2362) includes a frustum base (2362-1), and two sets of frustum bases (2362-1) are circumferentially rotatably connected to each other on one side away from each other, with several sets of balls (2362-2).

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