Long-distance conveying belt tearing protection device

Abstract

The utility model aims at providing a long-distance conveying belt tearing protection device. The long-distance conveying belt tearing protection device comprises a fixing support, a protection rope and a pull rope switch. A plurality of fixing supports are arranged on one side of a support of the conveying belt at intervals in the conveying direction, pull cord switches are correspondingly arranged on the other side of the support of the conveying belt, and the fixing supports correspond to the pull cord switches one to one. The protection rope is horizontally arranged perpendicular to the conveying direction, one end of the protection rope is connected with the pull rope switch, and the other end of the protection rope is connected with the fixing support. All the protection ropes are arranged below the conveying belt. The belt conveying device is simple in structural design and relatively low in cost, conveying can be stopped quickly when the belt is torn, and the belt tearing length is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor belt protection equipment, in particular to a long-distance conveyor belt tearing protection device. Background Art

[0002] In thermal power plants, multi-channel long-distance belt conveyors are needed. For example, the annual coal consumption of three units in a power plant is designed to be 411×104t / a, and the daily coal consumption is about 1.3×104t. The coal transportation system has 14 channels and 23 belts, and the belt conveyor output is 1000t / h. It takes 17-18 hours of belt operation to meet the daily coal consumption of the boiler. The coal for power plants is mainly transported into the plant by trains and cars. The coal transported by belts will be mixed with metal foreign bodies left behind by the transport vehicles and dropped inside the coal transportation system equipment. Although disc or belt iron removers are installed along the way, the metal foreign bodies are buried inside the coal pile and cannot be adsorbed by the iron remover. When the metal foreign bodies fall from the upper belt to the guide trough of the lower belt, they will be stuck in the guide trough and pierce the belt. If they are not discovered in time, the belt will be torn longitudinally, which seriously threatens the safety and stability of production.

[0003] At present, the coal conveyor belt is mainly stopped on site by pulling ropes. The ropes are mainly distributed on the brackets on both sides of the belt. When there is a problem with the equipment or personnel, the on-site operator will make an emergency stop by pulling the rope after judgment. However, the personnel cannot keep a close eye on the belt and the longitudinal tearing of the belt during loading is concealed and not easy to be discovered by humans. Therefore, the belt cannot be judged and stopped in time, which leads to major production accidents. Summary of the invention

[0004] The utility model aims to provide a long-distance conveying belt tear protection device, which has a simple structural design and relatively low cost. When tearing occurs, the transmission can be stopped quickly, effectively reducing the tear length of the belt.

[0005] The long-distance conveyor belt tear protection device comprises a fixed bracket, a protection rope, and a pull rope switch;

[0006] A plurality of fixed brackets are arranged at intervals along the conveying direction on one side of the bracket of the conveying belt, and a pull-rope switch is correspondingly arranged on the other side of the bracket of the conveying belt, and the fixed brackets correspond to the pull-rope switches one by one;

[0007] The protective rope is arranged horizontally and perpendicular to the conveying direction, one end of the protective rope is connected to the pull rope switch, and the other end is connected to the fixed bracket; all the protective ropes are arranged under the conveying belt.

[0008] The distance between adjacent fixing brackets is 15-40cm.

[0009] The fixed bracket includes a base and a column. The base is provided with a plurality of screw holes and is installed on the conveyor belt bracket by bolts. The column is vertically arranged on the top surface of the base, and the connection point of the protective rope is located on the column.

[0010] Both sides of the lower part of the column are respectively provided with reinforcing ribs fixedly connected to the top surface of the base.

[0011] A drawstring hole is provided at the upper end of the column, and the protective rope is passed through the drawstring hole and then locked with a fixed lock buckle.

[0012] The signal lines of all pull-rope switches are connected in series.

[0013] Each pull-rope switch is connected to the control device of the conveyor belt through a signal line. When the pull-rope switch is pulled, the conveyor belt stops working.

[0014] The distance between the protective rope and the lowest point of the bottom surface of the conveyor belt is 0.8-1.2cm.

[0015] The working principle of the utility model is as follows:

[0016] When metal foreign objects tear the belt, coal and metal foreign objects will pass through the cracks to the bottom of the belt, contact and compress the protective rope, thereby pulling the pull rope switch and transmitting a signal to the control device, which stops the conveyor belt from working.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model has a simple structure and relatively low cost. When tearing occurs, the transmission can be stopped quickly, the tearing length of the belt can be effectively reduced, the maintenance time and cost can be reduced, the safe production capacity can be improved, and the utility model has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a long-distance conveyor belt tear protection device according to Example 1;

[0020] Figure 2 A schematic structural diagram of a fixing bracket of an embodiment;

[0021] The serial numbers and names in the figure are as follows:

[0022] 1-fixed bracket, 2-protective rope, 3-pull rope switch, 4-conveying belt, 5-signal line;

[0023] 11-base, 12-column, 13-rope hole, 14-reinforcement rib. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0025] like Figure 1-2 As shown, the long-distance conveyor belt tear protection device includes a fixing bracket 1, a protection rope 2, and a pull rope switch 3;

[0026] On one side of the bracket of the conveyor belt 4, multiple fixed brackets 1 are arranged at intervals of 20 cm along the conveying direction, and a pull-rope switch 3 is correspondingly provided on the other side of the bracket of the conveyor belt 4. The fixed brackets 1 correspond to the pull-rope switches 3 one by one; the distance between the protective rope 2 and the lowest point of the lower bottom surface of the conveyor belt 4 is 1 cm.

[0027] The protective rope 2 is arranged horizontally and perpendicular to the conveying direction, one end of the protective rope 2 is connected to the pull rope switch 3, and the other end is connected to the fixed bracket 1; all the protective ropes 2 are arranged under the conveying belt 4.

[0028] The fixed bracket 1 includes a base 11 and a column 12. The base 11 is provided with a plurality of screw holes and is installed on the conveyor belt 4 bracket by bolts. The column 12 is vertically arranged on the top surface of the base 11, and the connection point of the protective rope 2 is located on the column 12; reinforcing ribs 14 fixedly connected to the top surface of the base 11 are respectively provided on both sides of the lower part of the column 12; a rope pulling hole 13 is provided at the upper end of the column 12, and the protective rope 2 is locked with a fixed lock after passing through the rope pulling hole 13.

[0029] The signal lines 5 of all the pull-wire switches 3 are connected in series. Each pull-wire switch 3 is connected to the control device of the conveyor belt 4 through the signal line 5. When the pull-wire switch 3 is pulled, the conveyor belt 4 stops working. Example 2

[0030] Take a thermal power plant as an example: before the application of the utility model technology, when tearing occurred, the pull rope switch was pulled manually, the reaction was slow, and the conveyor belt was torn for a long distance. A belt torn and damaged could be as long as 400 meters, the cost was about 140,000 yuan, the replacement and maintenance cost was about 30,000 yuan, and the replacement time was about 72 hours.

[0031] After using the device of Example 1, as long as the pull rope switch is triggered, the tearing distance will be controlled within 10 meters, the spare parts and maintenance costs are about 15,000 yuan, and the replacement time is about 6 hours, which greatly shortens the maintenance time and maintenance cost. More importantly, it reduces the risk of affecting safe production and ensures the stable operation of the boiler. The above equipment and method are suitable for most factories and mines with material transportation needs, and play an important role in reducing maintenance time and costs and improving safe production capabilities.

Claims

1. A long-distance conveyor belt tear protection device, comprising a fixed bracket (1), a protection rope (2), and a pull rope switch (3); characterized in that: A plurality of fixed brackets (1) are arranged at intervals along the conveying direction on one side of the bracket of the conveying belt (4), and a pull-wire switch (3) is correspondingly arranged on the other side of the bracket of the conveying belt (4), and the fixed brackets (1) correspond to the pull-wire switches (3) one by one; The protective rope (2) is arranged horizontally and perpendicular to the conveying direction; one end of the protective rope (2) is connected to the pull rope switch (3), and the other end is connected to the fixed bracket (1); all the protective ropes (2) are arranged below the conveying belt (4).

2. The long distance conveyor belt tear protection device according to claim 1, characterized in that: The distance between adjacent fixing brackets (1) is 15-40 cm.

3. The long distance conveyor belt tear protection device according to claim 1, characterized in that: The fixed bracket (1) comprises a base (11) and a column (12). The base (11) is provided with a plurality of screw holes and is mounted on a conveyor belt (4) bracket by means of bolts. The column (12) is vertically arranged on the top surface of the base (11), and the connection point of the protective rope (2) is located on the column (12).

4. The long distance conveyor belt tear protection device according to claim 3, characterized in that: Both sides of the lower part of the upright column (12) are respectively provided with reinforcing ribs (14) which are fixedly connected to the top surface of the base (11).

5. The long distance conveyor belt tear protection device according to claim 3, characterized in that: A rope hole (13) is provided at the upper end of the upright post (12), and the protective rope (2) is passed through the rope hole (13) and then locked with a fixed lock buckle.

6. The long distance conveyor belt tear protection device according to claim 1, characterized in that: The signal lines (5) of all the pull-cord switches (3) are connected in series.

7. The long distance conveyor belt tear protection device according to claim 5, characterized in that: Each pull-cord switch (3) is connected to a control device of a conveyor belt (4) via a signal line (5); when the pull-cord switch (3) is pulled, the conveyor belt (4) stops working.

8. The long distance conveyor belt tear protection device according to claim 1, characterized in that: The distance between the protective rope (2) and the lowest point of the lower bottom surface of the conveyor belt (4) is 0.8-1.2 cm.

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