Auxiliary tensioning device of downward belt conveyor

Abstract

The utility model relates to an auxiliary tensioning device of a downward belt conveyor. At present, when a belt conveyor for a coal mine moves downwards, a disc brake can effectively prevent reverse galloping accidents caused by failure of a backstop. However, when sudden stop occurs during downward transportation sometimes, the materials suddenly stop at an unloading section of the belt conveyor, so that the belt is damaged. The auxiliary tensioning device of the downward conveying belt conveyor comprises two original rollers (3) and a turnabout roller (1), the two original rollers and the turnabout roller are connected through a transmission belt, a roller shaft (13) is installed on the turnabout roller and penetrates through an insertion hole of an outer sleeve (7), an inner sleeve (8) is inserted into the outer sleeve, springs (6) are installed in the outer sleeve and the inner sleeve, and the springs (6) are connected with the transmission belt. When the outer sleeve is pressed downwards, the spring is compressed, and the shaft end of the roller shaft of the turnabout roller is connected with a piston rod of the air cylinder (4). The device is applied to the field of coal mines.

Description

Technical Field

[0001] The utility model relates to an auxiliary tensioning device for a down-conveying belt conveyor. Background Art

[0002] At present, when the coal mine conveyor is transported downward, the disc brake can effectively prevent the reverse runaway accident caused by the failure of the backstop. However, sometimes when the conveyor stops suddenly during transportation, the material stops suddenly at the unloading section of the conveyor, causing damage to the belt. Summary of the invention

[0003] The utility model aims to provide an auxiliary tensioning device for a down-conveying belt conveyor.

[0004] The above purpose is achieved through the following technical solutions:

[0005] An auxiliary tensioning device for a downward conveying belt conveyor comprises: two original rollers and a redirecting roller, the two original rollers and the redirecting roller are connected by a transmission belt, a roller shaft is installed on the redirecting roller, the roller shaft passes through the insertion hole of an outer sleeve, an inner sleeve is inserted into the outer sleeve, springs are installed in the outer sleeve and the inner sleeve, the springs will be compressed when the outer sleeve is pressed down, and the shaft end of the roller shaft of the redirecting roller is connected to the piston rod of the cylinder.

[0006] The auxiliary tensioning device for the lower belt conveyor is characterized in that the bottom of the cylinder is connected with a baffle, the baffle is connected with the side frame through a pin shaft, and a slideway is provided on the side frame.

[0007] The auxiliary tensioning device for the lower belt conveyor, the side frames are connected by a connecting beam, and the redirecting roller is arranged between the two side frames. Beneficial Effects

[0008] For this purpose, a belt conveyor auxiliary tensioning device is installed at the return part of the machine head to reduce the stress on the conveyor belt, make the conveyor belt evenly stressed, prevent the conveyor belt from deformation, effectively prevent the conveyor belt from longitudinal tearing due to material jamming, and extend the service life of the conveyor belt.

[0009] In order to overcome the problem that the disc brake cannot effectively prevent the backstop from failing and causing a runaway accident, the utility model provides a device for tension compensation, which has the characteristics of convenient and quick installation, simple and easy operation, reduces the labor intensity of workers, and significantly improves economic benefits.

[0010] Working process: During normal operation, the spring is in a stretched state, and the piston rod of the cylinder extends out to support the shaft end of the φ400 redirection roller under the action of the air pump. This device acts as a redirection device. When an emergency stop occurs during downhaul, the spring is compressed under the action of the belt gravity, and the piston rod of the cylinder contracts under the action of the air pump, so that the belt acts as a buffer, reducing the stress on the belt, evenly applying force, preventing deformation, and playing a role of tension compensation. When driving normally, the belt returns to normal working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a structural schematic diagram of the utility model.

[0012] Attached Figure 2 Yes Figure 1 Longitudinal section view of .

[0013] Attached Figure 3 Yes Figure 1 Horizontal cross-sectional view. DETAILED DESCRIPTION

[0014] In the figure, 1, redirecting roller, 2, side frame, 3, original roller, 4, cylinder, 5, shaft retaining ring, 6, spring, 7, outer sleeve, 8, inner sleeve, 9, pin shaft, 10, baffle, 11, connecting beam, 12, slideway, and 13, roller shaft. Example

[0015] An auxiliary tensioning device for a downward conveying belt conveyor comprises: two original rollers 3 and a redirecting roller 1, wherein the two original rollers and the redirecting roller are connected by a transmission belt, a roller shaft 13 is installed on the redirecting roller, the roller shaft passes through the insertion hole of an outer sleeve 7, an inner sleeve 8 is inserted into the outer sleeve, a spring 6 is installed in the outer sleeve and the inner sleeve, and the spring will be compressed when the outer sleeve is pressed downward, and the shaft end of the roller shaft of the redirecting roller is connected to the piston rod of a cylinder 4.

[0016] The auxiliary tensioning device for the lower belt conveyor has a baffle 10 connected to the bottom of the cylinder, the baffle is connected to the side frame 2 through a pin 9, and a slideway 12 is provided on the side frame.

[0017] The auxiliary tensioning device for the lower belt conveyor, the side frames are connected by a connecting beam, and the redirecting roller is arranged between the two side frames. Example

[0018] An auxiliary tensioning device for a down-carrying belt conveyor. In order to overcome the problem that the disc brake cannot effectively prevent the failure of the backstop and cause a runaway accident, the utility model provides a device composed of a side frame, a spring, a cylinder, a redirecting roller, a pin shaft, etc. for tension compensation. The installation is convenient and quick, and the operation is simple and easy. The labor intensity of workers is reduced, and the economic benefits are significantly improved. During normal operation, the spring is in a stretched state, and the piston rod of the cylinder extends out to support the shaft end of the φ400 redirecting roller under the action of the air pump. This device acts as a redirecting device. When an emergency stop occurs during down-carrying, the spring is compressed under the action of the belt gravity, and the piston rod of the cylinder contracts under the action of the air pump, so that the belt acts as a buffer, reducing the stress on the belt, evenly applying force, preventing deformation, and playing a role of tension compensation. When driving normally, the belt returns to normal working state.

Claims

1. An auxiliary tensioning device for a down-conveying belt conveyor, comprising: Two original rollers and a redirecting roller, the two original rollers and the redirecting roller are connected by a transmission belt, and are characterized in that a roller shaft is installed on the redirecting roller, the roller shaft passes through the insertion hole of the outer sleeve, an inner sleeve is inserted into the outer sleeve, springs are installed in the outer sleeve and the inner sleeve, and the springs will be compressed when the outer sleeve is pressed down, and the shaft end of the roller shaft of the redirecting roller is connected to the piston rod of the cylinder.

2. The auxiliary tensioning device for the lower conveyor belt conveyor according to claim 1 is characterized in that: The bottom of the cylinder is connected with a baffle, the baffle is connected with the side frame through a pin shaft, and the side frame is provided with a slideway.

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