Automatic belt winding and unwinding device of belt conveyor with movable end slope

Abstract

The utility model discloses an automatic belt winding and unwinding device of a belt conveyor with a movable end slope, and belongs to the technical field of conveying belt control of belt conveyors. Part of the conveying belt is wound among the multiple turnabout drums, the tensioning winch and the tensioning hydraulic cylinder are used for controlling the walking trolley to move in the horizontal direction of the operation track, the distance between the turnabout drums is adjusted, and the length of the conveying belt in the automatic belt winding and unwinding device is adjusted. In this way, the length of the conveying belt in the horizontal direction of the end-slope-movable belt conveyor is changed, and the problem that the length of the conveying belt is frequently adjusted due to the fact that the end-slope-movable belt conveyor is frequently moved and arranged and the machine length is changed is solved. And compared with a vulcanization mode for changing the length of the conveying belt, the adjustment time is obviously shortened, the horizontal machine length adjustment time of the end slope movable belt conveyor is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of belt conveyor control technology, and specifically relates to an automatic belt take-up and unwinding device for a belt conveyor with movable end side. Background Technology

[0002] Due to their operational characteristics, end-side movable belt conveyors require frequent relocation and adjustments in length based on the end-side layout. Currently, the most common method for adjusting the conveyor belt length is vulcanization. This involves cutting the existing conveyor belt, increasing or decreasing its length, and then vulcanizing the joint to make the conveyor belt a single unit, meeting the required length. However, this vulcanization process requires waiting for the joint to cure to the required strength, resulting in a significant time commitment to production. Therefore, this invention proposes an automatic belt unwinding and rewinding device suitable for end-side movable belt conveyors.

[0003] Mobile belt conveyors for end-side mining operations require frequent relocation and length adjustments as they advance to support the mining face. Consequently, the conveyor belt also needs frequent adjustments. Currently, the main method for adjusting the conveyor belt length is re-vulcanizing the belt to meet production requirements for extending or shortening the conveyor. The specific vulcanization process involves cutting the existing conveyor belt, increasing or decreasing its length to the required amount, and then re-vulcanizing the belt joint to make the conveyor belt a single unit. While this vulcanization method is relatively simple, the frequent length adjustments required for mobile belt conveyors for end-side mining operations, coupled with the need to wait for the vulcanized joint to cure, result in a long production time and low efficiency. Summary of the Invention

[0004] To address the above shortcomings, the purpose of this utility model is to provide an automatic belt feeding and unloading device for end-side movable belt conveyors, which solves the problem of frequent belt length adjustments caused by frequent relocation and changes in machine length of end-side movable belt conveyors.

[0005] The technical solution adopted by the utility model is: an automatic belt feeding and unloading device for an end-side movable belt conveyor. Its key technical points are that it mainly consists of a redirecting roller assembly, a conveyor belt, a running track, a traveling trolley and guide pulley blocks, a tensioning winch, and a tensioning hydraulic cylinder. A traveling trolley is installed on the track between the raft plates of the two end-side movable belt conveyor frames. The conveyor belt passes over the redirecting rollers fixed to the frame and the traveling trolley, and after being redirected by the rollers, returns to the return belt surface of the belt conveyor. A steel wire rope, with one end fixed to the movable belt conveyor frame, passes around the guide pulley blocks on the traveling trolley and the guide pulley blocks at the end of the tensioning hydraulic cylinder. The other end is fixed to the tensioning winch, changing the length of the steel wire rope between the frame and the traveling trolley, thereby changing the length of the conveyor belt.

[0006] In the above scheme, the redirecting roller assembly includes a first redirecting roller, a second redirecting roller, and a fifth redirecting roller fixed on the frame, and a third redirecting roller and a fourth redirecting roller fixed on the traveling trolley. The conveyor belt passes over the fifth redirecting roller fixed on the frame, the third redirecting roller fixed on the traveling trolley, the first redirecting roller fixed on the frame, the fourth redirecting roller fixed on the traveling trolley, and the second redirecting roller fixed on the frame before reaching the exiting roller.

[0007] In the above scheme, the tensioning winch is equipped with a drum for winding the wire rope.

[0008] The beneficial effects of this utility model are as follows: An automatic belt take-up and unload device for an end-side movable belt conveyor, by having a portion of the conveyor belt wind between multiple redirecting rollers, uses a tension winch and a tensioning hydraulic cylinder to control the traveling trolley to move horizontally along the running track, adjusting the distance between the redirecting rollers to adjust the length of the conveyor belt inside the automatic take-up and unload device. This solves the problem of frequent conveyor belt length adjustments caused by frequent relocation and changes in the machine length of end-side movable belt conveyors. Compared to changing the conveyor belt length through vulcanization, the adjustment time is significantly shortened, reducing the horizontal length adjustment time of the end-side movable belt conveyor and improving production efficiency. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the automatic belt take-up and untake-up device for a movable belt conveyor in an embodiment of this utility model;

[0011] Figure 2 This is a schematic diagram of the wire rope winding method in the embodiment of this utility model;

[0012] The numbers in the diagram are explained as follows: 1. Redirecting roller assembly, 1-1 First redirecting roller, 1-2 Second redirecting roller, 1-3 Third redirecting roller, 1-4 Fourth redirecting roller, 1-5 Fifth redirecting roller, 2. Conveyor belt, 3. Running track, 4. Traveling trolley, 5. Guide pulley block, 6. Tensioning hydraulic cylinder, 7. Tensioning winch, 8. Raft plate, 9. Outgoing roller, 10. Wire rope, 11. Frame. Detailed Implementation

[0013] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-2 The present invention will be further described in detail below with reference to specific embodiments.

[0014] The automatic belt feeding and unloading device for the mobile belt conveyor used in this embodiment mainly consists of a redirecting roller assembly 1, a conveyor belt 2, a running track 3, a traveling trolley 4, a guide pulley block 5, a tensioning hydraulic cylinder 6, and a tensioning winch 7. Figure 1 As shown, the redirecting roller assembly consists of a first redirecting roller 1-1, a second redirecting roller 1-2, and a fifth redirecting roller 1-5 fixed to the belt conveyor frame 11, and a third redirecting roller 1-3 and a fourth redirecting roller 1-4 fixed to the traveling trolley 4. The running track 3 is composed of multiple track segments; in this embodiment, track 3 consists of three track segments. Each track segment is positioned between two end-mounted movable belt conveyor frames and rafts 8, with both ends of the track connected to the corresponding rafts 8. The traveling trolley 4 can move horizontally on the running track 3. Guide pulley blocks 5 are fixed to the traveling trolley 4 and the tensioning hydraulic cylinder 6, respectively, and connected to the belt conveyor frame 11 and the tensioning winch 7 via wire ropes 10. The tensioning hydraulic cylinder 6 and the tensioning winch 7 are respectively fixed to the belt conveyor frame 11.

[0015] The automatic belt take-up and unwinding device for the end-side belt conveyor introduces the return belt surface of the belt conveyor into the automatic take-up and unwinding device through the redirecting rollers 1-5. The conveyor belt 2 passes around the fifth redirecting roller 1-5 fixed on the frame, the third redirecting roller 1-3 fixed on the traveling trolley 4, the first redirecting roller 1-1 fixed on the frame 11, the fourth redirecting roller 1-4 fixed on the traveling trolley 4, and the second redirecting roller 1-2 fixed on the frame 11, and finally returns to the return belt surface of the belt conveyor after being redirected by the exiting roller 9. The working principle of the automatic belt take-up and unwinding device for the end-side belt conveyor is as follows: the length of the conveyor belt inside the automatic take-up and unwinding device is adjusted by the winding and unwinding of the wire rope through the tensioning winch 7 fixed on the frame 11. The winding relationship of the wire rope 10 among the traveling trolley 4, guide pulley block 5, tensioning hydraulic cylinder 6, and tensioning winch 7 is as follows. Figure 2As shown. One end of the wire rope 10 is fixed to the frame 11 of the belt conveyor, and it passes through the guide pulley block 5 on the traveling trolley 4 and the guide pulley block at the end of the tensioning hydraulic cylinder 6. The other end is fixed to the tensioning winch 7. By changing the rotation direction of the tensioning winch 7, the traveling trolley 4 can move horizontally on the running track 3, and the function of adjusting the length of the conveyor belt can be further realized. The specific technical solution is as follows: When the tensioning winch 7 rotates clockwise, the wire rope 10 continuously winds around the drum of the tensioning winch 7, shortening the wire rope length between the wire rope and the traveling trolley 4, so that the traveling trolley 4 moves horizontally to the right along the running track 3, increasing the distance between the third redirecting roller on the traveling trolley 4 and the first redirecting roller fixed on the frame 11, increasing the length of the conveyor belt inside the automatic belt take-up and unwinding device, and shortening the length of the horizontal bearing surface of the belt conveyor. When the tensioning winch 4 rotates counterclockwise, the wire rope 10 continuously detaches from the drum of the tensioning winch 7, and the length of the wire rope 10 between it and the traveling trolley 4 continuously increases. The tension inherent in the conveyor belt 2 causes the traveling trolley 4 to move horizontally to the left along the running track 3. The distance between the third redirecting roller on the traveling trolley 4 and the third redirecting roller fixed on the frame 11 decreases, the length of the conveyor belt inside the automatic belt take-up and unwinding device continuously decreases, and the length of the horizontal bearing surface of the belt conveyor increases. Figure 1 It can be seen that the adjustment length of the conveyor belt is approximately four times the travel distance of the traveling trolley.

[0016] Meanwhile, the automatic belt take-up and unwinding device is equipped with a tensioning hydraulic cylinder 6, which can make fine adjustments to the length changes of the conveyor belt caused by tension during the operation of the belt conveyor, ensuring the stable operation of the conveyor belt. The automatic belt take-up and unwinding device uses a tensioning winch 7 and a tensioning hydraulic cylinder 6 to control the traveling trolley 4 to move horizontally along the running track 3, adjusting the distance between the first redirecting roller 1-1, the second redirecting roller 1-2 fixed on the frame 11 and the third redirecting roller 1-3 and the fourth redirecting roller 1-4 on the traveling trolley 4, thereby adjusting the length of the conveyor belt inside the automatic belt take-up and unwinding device, and thus adjusting the length of the conveyor belt outside the belt conveyor take-up and unwinding device to meet the relocation requirements of the end-side movable belt conveyor.

[0017] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An automatic belt unwinding and rewinding device for a movable end-side belt conveyor, characterized in that, It mainly consists of a redirecting roller assembly, a conveyor belt, a running track, a traveling trolley and guide pulley blocks, a release tensioning winch and a tensioning hydraulic cylinder. The traveling trolley is installed on the track between the raft plates of the two end-mounted movable belt conveyor frames. The conveyor belt passes around the redirecting rollers fixed on the frame and the redirecting rollers fixed on the traveling trolley, and returns to the return belt surface of the belt conveyor after being redirected by the exit rollers. A steel wire rope fixed at one end to the movable belt conveyor frame passes around the guide pulley blocks on the traveling trolley and the guide pulley blocks at the end of the tensioning hydraulic cylinder, and the other end is fixed to the tensioning winch. Changing the length of the steel wire rope between the frame and the traveling trolley changes the length of the conveyor belt.

2. The automatic belt unwinding and rewinding device for a movable end-side belt conveyor as described in claim 1, characterized in that, The redirecting roller assembly includes a first redirecting roller and a second redirecting roller fixed on the frame, a third redirecting roller and a fourth redirecting roller fixed on the traveling trolley, and the conveyor belt passes over the first redirecting roller fixed on the frame, the third redirecting roller fixed on the traveling trolley, the second redirecting roller fixed on the frame and the fourth redirecting roller fixed on the traveling trolley respectively to reach the exit roller.

3. The automatic belt feeding and unloading device for an end-side movable belt conveyor as described in claim 1 or 2, characterized in that, The tensioning winch is equipped with a drum for winding the wire rope.

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