Belt cleaning device for coal yard

Abstract

The invention relates to the technical field of mine belt cleaning, and discloses a belt cleaning device for a coal yard, which comprises a bracket I, a bracket II fixedly connected to the surface of the bracket I, and air cylinders symmetrically mounted on the surface of the bracket II, a plurality of carrier roller frames are fixedly connected to the surface of the bracket I, and a belt is arranged on the surfaces of the carrier roller frames. Through the arrangement of the coordination mechanism, the bearing mechanism and the auxiliary part, when large-area caking is generated on the surface of the belt, the first air cylinder drives the second auxiliary roller to press the surface of the belt downwards, so that the belt is pressed to form a v-shaped or w-shaped curve, and when the flexible belt deforms, the caking material is brittle and hard and cannot generate elastic deformation along with the belt synchronously; when the belt is cleaned, the second auxiliary roller which actively and reversely rotates generates continuous shoveling and prying effects on the roots of the loosened blocks, the loosened blocks effectively fall off from the surface of the belt, and the fallen fragments are swept away by the first auxiliary roller which rotates along the direction behind, so that the effect of cleaning the belt is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of belt cleaning for mines, in particular to a belt cleaning device for coal yards. BACKGROUND

[0002] In the process of mining and transportation of coal mines, the belt conveying system is a vital "artery" and plays a role in transporting coal mines. However, the environment of underground and open-air transfer stations of coal mines is extremely harsh, which causes the belt, especially the non-working face of the return section (i.e. the section of empty return after unloading), to easily adhere and form hard clumps. Wet coal powder will adhere to the surface of the belt, and with the operation of the belt, it will be repeatedly crushed when passing through the tensioning roller and roller bracket in the return section. At the same time, underground ventilation will accelerate water evaporation, causing the coal powder mixture to form a hard and dense crust layer clump.

[0003] At present, the cleaning devices commonly used in the industry, such as alloy scraper sweeper and empty section sweeper, are difficult to efficiently process the crust layer clumps when facing the above working conditions. Relying on the scraping force on the surface of the belt to remove the adhering material is effective for loose materials, but for the already compacted and dry-hard "riverbed-shaped" clumps, the scraping force will be transmitted to the surface of the belt after being transmitted to the surface of the clumps, causing damage to the surface of the belt, which may cause the equipment to be stuck, the belt to be deviated, and affect the working efficiency of the belt conveying system. SUMMARY

[0004] The purpose of the present application is to provide a belt cleaning device for coal yards to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a belt cleaning device for coal yards, comprising a support one, a plurality of roller brackets are fixedly connected to the surface of the support one, and a belt is arranged on the surface of the roller bracket, further comprising:

[0006] a support two is fixedly connected to the support one, a plurality of air cylinders one are symmetrically installed on the support two, a telescopic rod one is fixedly connected to the output end of each air cylinder one, a telescopic rod two is symmetrically installed on the surface of the support two, the telescopic rod two is located below the roller bracket, and an auxiliary part is symmetrically arranged on the surface of the support two;

[0007] a coordination mechanism is arranged on the support two;

[0008] a supporting mechanism is arranged on the support two.

[0009] The auxiliary part comprises an adapter block fixedly connected to the surface of the support, the surface of the adapter block is threadedly connected with a support block, the two support blocks are fixedly connected with a bent rod one, the surface of the bent rod one is rotatably connected with a plurality of auxiliary rollers one, one of the adapter blocks is fixedly connected with a motor one, and the auxiliary rollers one have the same inclination angle as the belt.

[0010] The coordination mechanism comprises a rotating rod one and a bent rod two, one end of the rotating rod one is fixedly connected with the output end of the motor one, the other end is rotatably connected with the other adapter block, the surface of the rotating rod one is circumferentially provided with a plurality of ring-shaped tooth grooves, each ring-shaped tooth groove is engaged with a chain, the surface of the bent rod two is rotatably connected with a plurality of auxiliary rollers two, each auxiliary roller two is engaged with the chain, and the two ends of the bent rod two are fixedly connected with the two adapter blocks.

[0011] The supporting mechanism comprises a bent rod three arranged between the supports two, the surface of the bent rod three is rotatably connected with a plurality of auxiliary rollers three, and the surface of the bent rod three is fixedly connected with a load block near the two sides of the auxiliary rollers three.

[0012] The inclination angles of the plurality of auxiliary rollers three are the same as the direction of the belt close to the center of the earth surface.

[0013] The ends of the telescopic rod two are rotatably connected with the load block through a short rod, and the auxiliary rollers three are always in contact with the surface of the belt close to the center of the earth surface in the working state.

[0014] The telescopic rod two and the telescopic rod one are both provided with springs.

[0015] The end of the telescopic rod one is fixedly connected with the adapter block.

[0016] The heights of the plurality of auxiliary rollers one are higher than those of the plurality of bent rods two from the vertical direction of the center of the earth surface.

[0017] The bent rod three is rotatably connected with the support two, and the plurality of auxiliary rollers three and the plurality of auxiliary rollers two are arranged alternately.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] When a large area of the belt surface is blocked, the auxiliary rollers two are pressed on the surface of the belt under the driving of the air cylinder one, so that the belt is pressed to form a v-shaped or w-shaped curl, and when the flexible belt is deformed, the material of the block is brittle and hard, and cannot be elastically deformed synchronously with the belt, so that the peeling stress is generated at the adhesive interface between the block and the belt surface, at this time, the auxiliary rollers two are reversely rotated, the auxiliary rollers two continuously chip and pry the loosened root of the block, so that the block is effectively separated from the belt surface, the separated fragments are swept away by the auxiliary rollers one rotating in the rear direction, and the effect of cleaning the belt is achieved.

[0020] Further, in order to improve the cleaning efficiency of the stubborn lump, the auxiliary roller two and the auxiliary roller three are staggered, which not only makes the belt cross section locally curved, but also induces a continuous wave shape in the running longitudinal direction, so that the lump is subjected to multi-directional and alternating bending stress and shear stress, causing the lump to crack and break from the inside, achieving deep and efficient cleaning effect.

[0021] Further, through the setting of the supporting mechanism, the telescopic rod two always supports the auxiliary roller three to the lower surface of the belt during the working and cleaning of the belt, and in the cleaning state, it still plays a lifting effect while giving way to the pressed belt. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the first perspective schematic diagram of the whole device of the application;

[0023] Figure 2 It is the second perspective schematic diagram of the whole device of the application;

[0024] Figure 3 It is the schematic diagram of the supporting mechanism of the application;

[0025] Figure 4 It is the first perspective schematic diagram of the bracket;

[0026] Figure 5 It is the second perspective schematic diagram of the bracket;

[0027] Figure 6 It is the schematic diagram of the belt deformation in the working state.

[0028] In the figure: 10, bracket one; 11, supporting roller frame; 12, belt; 20, bracket two; 21, air cylinder one; 22, telescopic rod one; 23, telescopic rod two; 211, adapter block; 212, supporting block; 213, bent rod one; 214, auxiliary roller one; 215, motor one; 30, coordination mechanism; 31, rotating rod one; 32, bent rod two; 33, chain; 34, auxiliary roller two; 40, supporting mechanism; 41, bent rod three; 42, auxiliary roller three; 43, load block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0030] This invention discloses a conveyor belt cleaning device for coal yards, including a support frame 10, a plurality of idler roller frames 11 fixedly connected to the surface of the support frame 10, and a conveyor belt 12 disposed on the surface of the idler roller frames 11, and further comprising:

[0031] Support 20 is fixedly connected to support 10. Cylinder 1 21 is symmetrically installed on support 20. Each cylinder 1 21 has a telescopic rod 1 22 fixedly connected to its output end. Telescopic rod 23 is symmetrically installed on the surface of support 20. Telescopic rod 23 is located below roller frame 11. Auxiliary parts are symmetrically arranged on the surface of support 20.

[0032] There are two telescopic rods 23, both located between the belt 12 and several idler roller frames 11, and are set horizontally.

[0033] Coordination mechanism 30 is mounted on bracket 20;

[0034] The supporting mechanism 40 is mounted on the bracket 20.

[0035] The auxiliary component includes a transition block 211 fixedly connected to the surface of the bracket 20. The surface of the transition block 211 is connected to a support block 212 by bolts. A bent rod 213 is fixedly connected between two support blocks 212. Several auxiliary rollers 214 are rotatably connected to the surface of the bent rod 213. A motor 215 is fixedly connected inside one of the transition blocks 211. The auxiliary rollers 214 are inclined at the same angle as the belt 12.

[0036] During use, auxiliary roller 1 214 is shaped to match the bent rod 1 213, ensuring its tilt angle is the same as that of belt 12. Auxiliary rollers 2 34 and 3 42 follow the same principle. All three rollers—3 42, 34, and 214—are metal cylinders with rubber rings or similar materials covering their surfaces. The identical tilt angles allow for better contact with the upper and lower surfaces of belt 12, achieving "surface contact" rather than "point contact" or "line contact," thus ensuring stable operation. However, the difference lies in the surface texture: auxiliary roller 3 42 has a smooth rubber layer, while auxiliary rollers 1 214 and 34 have textured rubber layers. Roller 3 42 serves as a support and is a passive support component. The sharp edges of the patterns on auxiliary rollers 1 214 and 2 34 can cut into the interior of the agglomerate like "claws," generating huge local pressure and breaking it. When auxiliary roller 2 34 rotates in the opposite direction, the patterns can generate multi-directional shearing force on the agglomerate, peeling it off like prying something with a screwdriver. The gaps between the patterns can prevent sticky materials from adhering to the auxiliary rollers 1 214 and 2 34 over a large area. The difference between the two is that one side of the surface of auxiliary roller 2 34 is engaged with chain 33. Chain 33 is set to make each auxiliary roller 2 34 rotate at the same speed when the rotating rod 1 31 rotates.

[0037] It should be noted that the upper auxiliary roller 34 and the lower auxiliary roller 42 of the belt 12 are not on the same vertical line, and the auxiliary rollers 34 and 42 are arranged alternately. However, when they are on the same vertical plane, the auxiliary roller 34 between the two auxiliary rollers 42 is left with a certain distance from the adjacent auxiliary roller 42. This is to prevent the belt 12 from getting stuck in the gap between the two when the auxiliary roller 34 is pressed down, which would damage the belt 12. The reserved gap between the two is greater than the thickness of the belt 12 when bent, and at the same time, it allows the auxiliary rollers 34 and 42 to be aligned vertically. 2. During operation, the agglomerates on the surface of belt 12 are brittle materials. Their staggered arrangement causes the agglomerates to bend downwards and then upwards in a short period. This rapid stress change induces fatigue cracks within the agglomerates, eventually causing them to detach from the belt 12 surface. This S-shaped bend generates a significant peeling stress at the bond between the agglomerates and belt 12, similar to prying something with a crowbar. Furthermore, the staggered arrangement breaks down a large bend into two continuous, relatively gentle bends, allowing the internal steel cables of belt 12 to adapt to this deformation more smoothly, reducing running resistance and damage to belt 12. (See reference...) Figure 6 Auxiliary rollers 342, 342, and 2142 are arranged in a V-shape on belt 12. The upper V-shape, i.e., auxiliary rollers 342 and 2142, forces belt 12 to bend. Due to the elasticity of the rubber, its surface will be stretched. However, the clump is brittle and hard. The clump stuck on it cannot deform elastically and will be peeled off. At the same time, due to the reverse rotation of auxiliary roller 34, a scraping effect is generated. In the working state, auxiliary roller 34 is driven by a driving force and its rotation speed is greater than that of belt 12. The pattern of auxiliary roller 34 will generate a strong cutting force on the root of the clump, directly "shoveling" off the clump. The clump is similar to the clump on the surface of a metal block. The metal block is shaken from side to side to loosen it, and it will also generate a back-and-forth shaking trajectory to expand the loosening of the clump.

[0038] Furthermore, when the auxiliary roller 34 presses down on the auxiliary roller 42, if the agglomeration is too large, the auxiliary roller 42 will be subjected to excessive pressure from the belt 12. The auxiliary roller 42 will then drive the bending rod 41 to move aside. When the auxiliary roller 42 is not under force or the force is small, the telescopic rod 23 tilts and lifts the load block 43, so that the auxiliary roller 42 is always in contact with the surface of the belt 12.

[0039] The coordination mechanism 30 includes a rotating rod 31 and a bent rod 32. One end of the rotating rod 31 is fixedly connected to the output end of the motor 215, and the other end is rotatably connected to another adapter block 211. The rotating rod 31 has several sets of annular toothed grooves on its surface. Each annular toothed groove is meshed with a chain 33. Several auxiliary rollers 34 are rotatably connected to the surface of the bent rod 32. Each auxiliary roller 34 meshes with the chain 33. The two ends of the bent rod 32 are fixedly connected to two adapter blocks 211 respectively.

[0040] The supporting mechanism 40 includes a bent rod 41 disposed between the brackets 20. Several auxiliary rollers 42 are rotatably connected to the surface of the bent rod 41. Carrier blocks 43 are fixedly connected to the surface of the bent rod 41 near the two sides of the auxiliary rollers 42.

[0041] The tilt angle of the auxiliary rollers 42 is the same as that of the belt 12 near the center of gravity of the ground.

[0042] The end of the telescopic rod 23 is rotatably connected to the carrier block 43 via a short rod, and the auxiliary roller 42 is always in contact with the belt 12 near the center of gravity of the ground surface during operation.

[0043] Both the second telescopic rod 23 and the first telescopic rod 22 are equipped with springs inside.

[0044] The end of the telescopic rod 22 is fixedly connected to the adapter block 211.

[0045] The height of the multiple auxiliary rollers 214, vertically from the center of gravity on the ground, is higher than that of the multiple curved rods 32.

[0046] The bent rod 41 is rotatably connected to the support 20, and the multiple auxiliary rollers 42 and multiple auxiliary rollers 34 are arranged alternately.

[0047] Working principle:

[0048] Preparations, see reference Figure 5 Adjust the angle of the support block 212 on the adapter block 211 to ensure that the height of the auxiliary roller 1 214 is higher than that of the auxiliary roller 2 34. That is, when the auxiliary roller 1 214 is driven by the cylinder 1 21 to drive the telescopic rod 1 22 to lower the adapter block 211, the auxiliary roller 1 214 will contact the surface of the belt 12. Then fix the support block 212 and the adapter block 211. In the initial state of the telescopic rod 2 23 driving the carrier block 43 to rise, the bent rod 3 41 drives the auxiliary roller 3 42 to conform to the curvature of the lower surface of the belt 12. The preparation work is thus completed.

[0049] When a large area of ​​clumps forms on the belt surface, refer to Figure 5 as well as Figure 4When cylinder 21 of bracket 20 starts working, it drives the adapter block 211 to descend, causing the rotating rod 31 and the bent rod 213 on the adapter block 211 to descend synchronously. Auxiliary roller 34 and auxiliary roller 214 move closer to belt 12. (See reference...) Figure 5 When auxiliary roller 1 214 and auxiliary roller 2 34 press the belt 12 down to the set height, auxiliary roller 3 42 lifts the lower surface of the belt 12 to form a convex surface. At this time, the belt 12 has a V-shaped or W-shaped curved cross section. Motor 1 215 starts to work. The output end of motor 1 215 drives the rotating rod 1 31 to rotate. At this time, several chains 33 on the surface of rotating rod 1 31 start to rotate. The chains 33 drive their respective lower auxiliary rollers 2 34 to start to rotate. The auxiliary rollers 2 34 rotate in the opposite direction to the transport direction of the belt 12. When the cylinder 1 21 presses down too much or the belt 12 is subjected to too much force, the telescopic rod 2 23 descends towards the center of gravity of the ground. The auxiliary roller 3 42 makes way for the downward pressure of the belt 12. The auxiliary roller 2 34 cleans or scrapes away the warped clumps. The clumps below the belt 12 are less contaminated and have fewer clumps. During the curvature, the clumps are naturally shaken off by the subsequent mechanical vibration of the belt 12.

[0050] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A belt cleaning device for coal yards, comprising a support frame (10), wherein a plurality of idler frames (11) are fixedly connected to the surface of the support frame (10), and a belt (12) is provided on the surface of the idler frames (11), characterized in that, Also includes: Support 2 (20) is fixedly connected to support 1 (10). Support 2 (20) is symmetrically equipped with cylinder 1 (21). Each cylinder 1 (21) is fixedly connected to a telescopic rod 1 (22) at its output end. Support 2 (20) is symmetrically equipped with telescopic rod 2 (23) on its surface. The telescopic rod 2 (23) is located below the roller frame (11). Support 2 (20) is symmetrically equipped with auxiliary parts on its surface. The coordinating mechanism (30) is mounted on the second support (20); The supporting mechanism (40) is set on the second bracket (20).

2. The conveyor belt cleaning device for coal yards according to claim 1, characterized in that: The auxiliary component includes a transition block (211) fixedly connected to the surface of the second bracket (20). The surface of the transition block (211) is connected to a support block (212) by bolt thread. A bent rod (213) is fixedly connected between the two support blocks (212). Several auxiliary rollers (214) are rotatably connected to the surface of the bent rod (213). A motor (215) is fixedly connected inside one of the transition blocks (211). The auxiliary rollers (214) have the same tilt angle as the belt (12).

3. A conveyor belt cleaning device for coal yards according to claim 2, characterized in that: The coordination mechanism (30) includes a rotating rod (31) and a bent rod (32). One end of the rotating rod (31) is fixedly connected to the output end of the motor (215), and the other end is rotatably connected to another adapter block (211). The rotating rod (31) has several sets of annular toothed grooves on its surface in a circular shape. Each annular toothed groove is meshed with a chain (33). Several auxiliary rollers (34) are rotatably connected to the surface of the bent rod (32). Each auxiliary roller (34) meshes with the chain (33). Both ends of the bent rod (32) are fixedly connected to two adapter blocks (211).

4. A conveyor belt cleaning device for coal yards according to claim 3, characterized in that: The supporting mechanism (40) includes a bent rod three (41) disposed between the bracket two (20), and a plurality of auxiliary rollers three (42) are rotatably connected to the surface of the bent rod three (41), and a carrier block (43) is fixedly connected to the two sides of the surface of the bent rod three (41) near the auxiliary rollers three (42).

5. A conveyor belt cleaning device for coal yards according to claim 4, characterized in that: The tilt angle of the auxiliary rollers (42) is the same as that of the belt (12) near the center of gravity of the ground.

6. A conveyor belt cleaning device for coal yards according to claim 5, characterized in that: The end of the telescopic rod (23) is rotatably connected to the carrier block (43) via a short rod, and the auxiliary roller (42) is always in contact with the belt (12) near the center of gravity of the ground surface during operation.

7. A conveyor belt cleaning device for coal yards according to claim 6, characterized in that: Both the second telescopic rod (23) and the first telescopic rod (22) are equipped with springs.

8. A conveyor belt cleaning device for coal yards according to claim 7, characterized in that: The telescopic rod (22) is fixedly connected to the adapter block (211) at one end.

9. A conveyor belt cleaning device for coal yards according to claim 8, characterized in that: The height of the multiple auxiliary rollers (214) is higher than that of the multiple bent rods (32) in the vertical direction from the center of gravity of the ground.

10. A conveyor belt cleaning device for coal yards according to claim 9, characterized in that: The bending rod three (41) is rotatably connected to the bracket two (20), and the multiple auxiliary rollers three (42) and multiple auxiliary rollers two (34) are staggered.

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