A quick replacement tool and method for a belt idler

Abstract

The present invention provides a quick replacement tool and method for belt rollers. The tool includes a bottom roller installation device, an upper roller installation device. The bottom roller installation device includes a cross frame, vertical rods vertically connected to both ends of the cross frame, a crowbar, and a limiting device. A number of horizontal plates are fixedly connected to the vertical rods. The upper roller installation device includes a trough-shaped frame. A lifting rod is fixedly connected to one side of the upper end of the trough-shaped frame, and a strut is obliquely fixedly connected to the other side. A limiting pin is provided on the trough-shaped frame. This tool can quickly replace the belt conveyor rollers and improve the maintenance efficiency.

Description

Technical Field

[0001] The invention belongs to the field of underground transportation equipment, and in particular relates to a belt roller quick replacement tool and a replacement method. Background Art

[0002] The belt conveyor in coal mines is an important component of the coal transportation system. The advantage of the belt conveyor is that it can realize continuous transportation under the conditions of continuous loading and unloading. Therefore, in daily production, rapid maintenance of the belt conveyor in coal mines is an inevitable requirement of production. During use, the most common fault is the roller damage caused by poor sealing of the roller, slurry pollution, corrosion of the roller tube body, and mechanical structure design. This also makes the roller of the belt conveyor one of the most frequently maintained parts, which requires maintenance almost every day.

[0003] When the coal mine rollers need to be replaced, due to the tension of the belt itself and the gravity effect, two people must work together during the installation process. One person uses a crowbar to lift the belt, and the other person installs the roller's bracket on the support pin. This is time-consuming and labor-intensive, and greatly reduces the efficiency of maintenance work. Summary of the invention

[0004] The purpose of the present invention is to provide a belt roller quick replacement tool, which can quickly replace the belt conveyor rollers and improve the maintenance efficiency.

[0005] It is another object of the present invention to provide a replacement method suitable for the tool of the present invention.

[0006] To achieve the above object, the technical solution of the present invention is: a belt roller quick replacement tool, comprising a bottom roller installation device, an upper roller installation device,

[0007] The bottom roller installation device includes a horizontal frame, longitudinal bars vertically connected to both ends of the horizontal frame, a crowbar, and a limit device, wherein a plurality of horizontal plates are fixedly connected to the longitudinal bars, and the limit device is an L-shaped plate, one end of the L-shaped plate is fixedly connected to the lower part of one side of the horizontal frame, and the L-shaped plate and the horizontal frame form a limit slot;

[0008] The upper roller installation device comprises a groove frame, one side of the upper end of the groove frame is fixedly connected to the lifting rod, and the other side is obliquely fixed to the frame rod. The two sides of the groove frame are symmetrically provided with fixing holes, and the symmetrically arranged fixing holes are provided with limit pins.

[0009] The included angle between the frame rod and the slot frame is 40-60 degrees.

[0010] The included angle between the lifting rod and the slot frame is 90-100 degrees.

[0011] The length of the side of the mounting rod of the trough-type frame is greater than the length of the mounting lifting rod.

[0012] The belt idler quick replacement tool of the present invention can achieve the purpose of replacing the idlers of the belt conveyor by a single person, greatly improving the work efficiency. At the same time, the tool has strong stability, and is safe and reliable.

[0013] A method for using a belt idler quick replacement tool includes the following steps:

[0014] Step 1: Replace the bottom idler. Place the cross frame of the bottom idler installation device on the belt conveyor frame, and use the limiting device to clamp on the belt conveyor frame. Then place the crowbar on the horizontal plate of the longitudinal beam. The crowbar passes through from the lower side of the bottom belt. The maintenance personnel lift the crowbar from the other end and place it on the horizontal plate on the other side to lift the lower belt. The maintenance personnel replace the bottom idler.

[0015] Step 2: Replace the upper idler. Place the rod of the upper idler installation device under the upper belt of the belt conveyor, with one end resting on the belt conveyor frame. The maintenance personnel hold the lifting rod and lift it upward. As the rod is lifted with the trough-shaped frame, the upper belt is lifted. When the trough-shaped frame sleeves the side beam of the belt conveyor, use the limit pin to lock the trough-shaped frame on the side beam of the belt conveyor.

[0016] The above belt idler quick replacement method can be selected for use individually or all used.

[0017] Adopting the method of the present invention, the maintenance personnel can achieve the operation of quickly replacing the idlers by a single person, greatly improving the work efficiency. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the bottom idler installation device of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the upper idler installation device of the present invention.

[0020] Figure 3 It is a schematic diagram of the use of the bottom idler installation device.

[0021] Figure 4 It is a schematic diagram of the use of the upper idler installation device. Detailed Description of the Invention

[0022] Embodiment 1

[0023] As Figures 1-4 shown, a belt idler quick replacement tool includes a bottom idler installation device and an upper idler installation device.

[0024] Bottom idler installation device, including a cross-frame 11 for horizontally placing on the upper part of the belt conveyor frame, vertical rods 12 vertically connected to both ends of the cross-frame, pry bars 13, and a limiting device. A number of horizontal plates 14 are fixedly connected to the vertical rods. The horizontal plates are used to place the pry bars to lift the bottom belt. The limiting device is an L-shaped plate 15. One end of the L-shaped plate 15 is fixedly connected to the lower part of one side of the cross-frame. The L-shaped plate and the cross-frame form a limiting slot, and the limiting slot can hold the side beam of the belt conveyor frame.

[0025] Upper idler installation device, including a trough-shaped frame 21. One side of the upper end of the trough-shaped frame 21 is fixedly connected with a lifting rod 22. The included angle between the lifting rod 22 and the trough-shaped frame is 90°. The other side is obliquely fixedly connected with a support rod 23. The included angle between the support rod 23 and the trough-shaped frame is 60°. Fixing holes are symmetrically arranged on both sides of the trough-shaped frame. A limiting pin 24 is arranged on the symmetrically arranged fixing holes. When the trough-shaped frame 21 cooperates with the side beam of the belt conveyor frame, the other end of the lifting rod 22 is placed on the upper part of the other side beam of the belt conveyor frame.

[0026] During use, according to the position of the idler that needs to be replaced due to damage, select to use the bottom idler installation device or the upper idler installation device.

[0027] To replace the bottom idler, place the cross-frame of the bottom idler installation device on the belt conveyor frame, and use the limiting device to hold on the belt conveyor frame. Then place the pry bar on the horizontal plate of the longitudinal beam. The pry bar passes through from the lower side of the bottom belt. The maintenance personnel lift the pry bar from the other end and place it on the horizontal plate on the other side to lift the lower belt. The maintenance personnel replace the bottom idler.

[0028] To replace the upper idler, place the support rod of the upper idler installation device under the upper belt of the belt conveyor, with one end placed on the belt conveyor frame. The maintenance personnel hold the lifting rod and lift it upward. As the trough-shaped frame is lifted, the upper belt is lifted. When the trough-shaped frame sleeves the side beam of the belt conveyor, use the limiting pin to lock the trough-shaped frame on the side beam of the belt conveyor.

[0029] Embodiment 2

[0030] The length of the side of the trough-shaped frame where the support rod is installed is greater than the length of the side where the lifting rod is installed. Compared with the trough-shaped frame with both sides flush, when lifting to the same height, the belt lifted by the support rod is higher, which is more convenient for operation.

Claims

1. A quick replacement tool for belt rollers, characterized in that: It includes a bottom idler installation device and a top idler installation device. The bottom idler installation device includes a cross frame, vertical rods vertically connected to both ends of the cross frame, a crowbar, and a limiting device. A number of horizontal plates are fixedly connected to the vertical rods at equal intervals. The limiting device is an L-shaped plate, one end of which is fixedly connected to the lower part of one side of the cross frame, and the L-shaped plate and the cross frame form a limiting card slot. The top idler installation device includes a trough-shaped frame, a lifting rod fixedly connected to one side of the upper end of the trough-shaped frame, and a strut obliquely fixedly connected to the other side. Fixing holes are symmetrically arranged on both sides of the trough-shaped frame, and limiting pins are arranged on the symmetrically arranged fixing holes.

2. The quick replacement tool for belt rollers according to claim 1, characterized in that: The included angle between the strut and the trough-shaped frame is 40 - 60°.

3. The quick replacement tool for belt rollers according to claim 1, characterized in that: The included angle between the lifting rod and the trough-shaped frame is 90 - 100°.

4. The quick replacement tool for belt rollers according to claim 1, characterized in that: The length of the side of the trough-shaped frame where the strut is installed is greater than the length of the side where the lifting rod is installed.

5. The using method of the quick replacement tool for belt rollers according to claim 1 includes the following steps: Step 1, replace the bottom roller. Place the cross frame of the bottom roller installation device on the belt conveyor frame, and use the limit device to clamp on the belt conveyor frame. Then place the crowbar on the horizontal plate of the longitudinal beam. The crowbar passes through from the lower side of the bottom belt. The maintenance personnel lift the crowbar from the other end and place it on the horizontal plate on the other side to lift the lower belt. The maintenance personnel replace the bottom roller. Step 2, replace the upper roller. Place the rod of the upper roller installation device under the upper belt of the belt conveyor, with one end resting on the belt conveyor frame. The maintenance personnel hold the lifting rod and lift it upward. As the rod is lifted with the trough-shaped frame, the upper belt is lifted. When the trough-shaped frame sleeves the side beam of the belt conveyor, use the limit pin to lock the trough-shaped frame on the side beam of the belt conveyor.

6. The using method of the quick replacement tool for belt rollers according to claim 5, characterized in that: For the belt idler quick replacement method, either step 1 or step 2 can be selected for use, or both can be used.

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