Tail rope isolation protection device of mine hoisting system

Abstract

The utility model discloses a mine hoisting system tail rope isolation protection device which comprises rope guide mechanisms arranged on the two sides of a tail rope, each rope guide mechanism comprises two transverse carrier rollers and a plurality of longitudinal carrier rollers, and a row of tail ropes penetrate between the two transverse carrier rollers. The two ends of each transverse carrier roller are rotationally connected with a fixed cross beam in the shaft; the longitudinal carrier rollers are horizontally placed and are perpendicular to the transverse carrier rollers, the longitudinal carrier rollers are arranged in the axial direction of the transverse carrier rollers, the two ends of each longitudinal carrier roller are rotationally connected with the fixed cross beam, a tail rope penetrates through the space between every two adjacent longitudinal carrier rollers, and a rolling protection device is arranged on the inner side of the U-shaped tail rope. According to the utility model, the rope guide mechanism is used for rope separation, the rolling protection device is arranged in the tail rope, the rolling protection device is triggered when the tail rope is rolled, and the elevator stops running. The reliability of the tail rope isolation protection device is greatly improved, the labor intensity of workers and the operation danger can be reduced, and safe and stable operation of a mine hoisting system is guaranteed.

Description

Technical Field

[0001] The utility model relates to a tail rope isolation and protection device for a mine hoisting system, belonging to the technical field of mine equipment. Background Art

[0002] In the mining production process, the hoisting system is the key equipment connecting the surface and underground, carrying the task of lifting and lowering personnel and materials. The most important part of the hoisting system is the hoisting wire rope, of which the tail rope is used to balance the weight of the head rope. In actual use, in order to ensure the safe and stable operation of the hoisting system, the tail rope of the wire rope needs to be installed with a tail rope isolation protection device (or rope separation device) to isolate the tail ropes to prevent the tail ropes from colliding with each other, tying, twisting, breaking wires and ropes due to large swings, and avoid equipment accidents.

[0003] At present, most domestic tail rope isolation and protection devices use rope splitters for rope splitting. There is sliding friction between the rope splitters and the tail rope, and the friction position is concentrated, which increases the wear rate of the rope splitters and the tail rope. Since the rope splitters have poor wear resistance, they are very easy to rot in the wellbore environment with high moisture content. The ore materials and other debris dropped during the loading and unloading of the hoisting system will also cause damage to them, resulting in a short service life of the rope splitters and poor reliability, which seriously affects the safety and stability of the mine hoisting system. At the same time, since the rope splitters are easily damaged, the frequency of personnel inspection is high, which invisibly increases the labor intensity of workers and the danger of wellbore operations. Therefore, it is very necessary to design a highly reliable tail rope isolation and protection device. Utility Model Content

[0004] The utility model aims to provide a highly reliable tail rope isolation protection device for a mine hoisting system to address the drawbacks of the prior art, so as to reduce the labor intensity and operation danger of workers and ensure the safe and stable operation of the mine hoisting system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tail rope isolation and protection device for a mine hoisting system comprises two rope guide mechanisms symmetrically arranged on both sides of a U-shaped tail rope, each rope guide mechanism comprises two transverse rollers and a plurality of longitudinal rollers, the two transverse rollers are horizontally placed and parallel to each other, a row of tail ropes pass through between the two transverse rollers, and both ends of each transverse roller are rotatably connected to a fixed beam in a shaft through a transverse roller bearing seat; the longitudinal rollers are horizontally placed and perpendicular to the transverse rollers, a plurality of longitudinal rollers are arranged along the axial direction of the transverse rollers, and both ends of each longitudinal roller are rotatably connected to a fixed beam through a longitudinal roller bearing seat, a tail rope passes between every two adjacent longitudinal rollers, and a winding protection device is provided on the inner side of the U-shaped tail rope.

[0007] The above-mentioned mine hoisting system tail rope isolation and protection device, the winding protection device includes a pull rope, a pull rope fixing bracket, a fixed pulley, a pulley bracket, a proximity switch and a trigger block, the pull rope fixing bracket and the pulley bracket are respectively located on both sides of the shaft and fixed to the lower part of the fixed beam, the fixed pulley is fixed on the pulley bracket, the pull rope passes through the inner side of the U-shaped tail rope, one end of the pull rope is fixed on the pull rope fixing bracket, and the other end is fixedly connected to the trigger block after passing around the fixed pulley, the proximity switch is fixed below the fixed beam and corresponds to the trigger block, and the signal output end of the proximity switch is connected to the controller of the mine hoisting system.

[0008] The tail rope isolation and protection device of the above-mentioned mine hoisting system, the winding protection device also includes a protection tube and a protection tube bracket, the trigger block is suspended inside the protection tube, the protection tube is vertically fixed below the fixed beam through the protection tube bracket, and the proximity switch is fixed on the inner wall of the protection tube.

[0009] In the above-mentioned mine hoisting system tail rope isolation and protection device, the proximity switch is a magnetic induction switch, and the trigger block is a high-strength magnet.

[0010] In the above-mentioned mine hoisting system tail rope isolation and protection device, the two transverse rollers in the same rope guide mechanism have the same height, multiple longitudinal rollers are arranged at equal intervals, and the distance between two adjacent longitudinal rollers is equal to the distance between the two transverse rollers; the distance from each tail rope to the two transverse rollers is equal, and the distance from each tail rope to the two adjacent longitudinal rollers is also equal.

[0011] In the above-mentioned mine hoisting system tail rope isolation and protection device, the transverse roller bearing seat and the longitudinal roller bearing seat are connected to the fixed crossbeam by bolts.

[0012] In the above-mentioned mine hoisting system tail rope isolation and protection device, each rope guide mechanism is provided with two fixed beams, the two beams have the same height and are parallel to the transverse rollers, the two transverse rollers are respectively installed on the opposite side walls of the two fixed beams, and the two ends of each longitudinal roller are rotatably connected to the tops of the two fixed beams through the longitudinal roller bearing seats.

[0013] In the above-mentioned mine hoisting system tail rope isolation and protection device, the fixed crossbeam adopts a fixed steel beam in the mine hoisting shaft.

[0014] In the above-mentioned mine hoisting system tail rope isolation and protection device, the material of the transverse roller and the longitudinal roller is polyurethane.

[0015] The utility model uses a rope guide mechanism to separate the ropes, prevents the tail ropes from colliding with each other and getting tangled, and installs a coiling protection device in the tail rope. When the tail rope is coiled, the coiling protection device is triggered, and the hoist stops running to prevent the tail rope from being broken. The device greatly improves the reliability of the tail rope isolation protection device and reduces the frequency of personnel inspection, thereby reducing the labor intensity of workers and the danger of operations, and ensuring the safe and stable operation of the mine hoisting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 It is a side view of the utility model.

[0020] The numbers in the figure are as follows: 1. Fixed crossbeam, 2. Horizontal roller fixing bolts, 3. Horizontal roller bearing seat, 4. Horizontal roller end cover bolts, 5. Longitudinal roller end cover bolts, 6. Longitudinal roller fixing bolts, 7. Longitudinal roller bearing seat, 8. Horizontal roller, 9. Longitudinal roller, 10. Tail rope, 11. Pull rope fixing bracket, 12. Pull rope, 13. Pulley bracket, 14. Protective tube, 15. Protective tube bracket, 16. Fixed pulley, 17. Proximity switch, 18. Trigger block. DETAILED DESCRIPTION

[0021] The utility model provides a tail rope isolation and protection device for a mine hoisting system. The device does not need to be replaced frequently, and the frequency of personnel inspection is also low. The tail rope splitting effect is excellent. There is rolling friction between the roller and the tail rope, which eliminates the disadvantage of concentrated sliding friction. At the same time, the roller is made of polyurethane, which has the best elasticity, wear resistance, corrosion resistance, shock absorption, and insulation. It is also light in weight, easy to install, replace, and inspect, reducing the danger of shaft operations and extending the service life of the tail rope and the rope splitting device. At the same time, when an abnormal fault such as the tail rope curling occurs, the curling protection device can be triggered, and the hoisting system stops running, thereby ensuring the safe and stable operation of the hoisting system.

[0022] See also Figure 1-Figure 3The utility model includes a rolling protection device and two rope guide mechanisms. The rope guide mechanism includes a fixed crossbeam 1, a transverse roller fixing bolt 2, a transverse roller bearing seat 3, a transverse roller end cover bolt 4, a longitudinal roller end cover bolt 5, a longitudinal roller fixing bolt 6, a longitudinal roller bearing seat 7, a transverse roller 8, and a longitudinal roller 9. The rolling protection device includes a rope fixing bracket 11, a rope 12, a pulley bracket 13, a protective tube 14, a protective tube bracket 15, a fixed pulley 16, a proximity switch 17 and a trigger block 18.

[0023] Taking the hoist model JKM-4X6 (Z) III as an example, there are three U-shaped tail ropes 10, and two fixed beams 1 and four longitudinal rollers 9 are required to be arranged on each side.

[0024] The figure shows that the fixed crossbeam 1 is the original fixed steel beam or steel tank road of the hoisting shaft. A transverse roller 8 is installed on each of the opposite side walls of the two parallel and equal-height fixed crossbeams 1 in the shaft; four longitudinal rollers 9 are installed between the tops of the two fixed crossbeams 1. The transverse rollers 8 and the longitudinal rollers 9 are arranged perpendicular to each other. Their projections on the horizontal plane form three squares. A tail rope passes through each square, and the tail rope is located at the center of the square. In other words, the three tail ropes 10 are all located between the two transverse rollers 8, and the four longitudinal rollers 9 are arranged at equal intervals along the axial direction of the transverse rollers 8. The distance between adjacent longitudinal rollers 9 is equal to the distance between the two transverse rollers 8. A tail rope 10 is arranged between every two adjacent longitudinal rollers 9, and the distance between each tail rope 10 and the two transverse rollers 8 and the distance to the two adjacent longitudinal rollers 9 are equal. This arrangement can ensure that the tail rope 10 will not touch other tail ropes when swinging in any direction, and the rope splitting effect is good.

[0025] The figure shows that the two ends of the transverse roller 8 are rotatably connected to the fixed crossbeam 1 through the transverse roller bearing seat 3; the two ends of the longitudinal roller 9 are rotatably connected to the fixed crossbeam 1 through the longitudinal roller bearing seat 7. When the tail rope 10 swings, no matter it contacts the transverse roller 8 or the longitudinal roller 9, the roller rotates accordingly, and there is rolling friction between the tail rope 10 and the transverse roller 8 and the longitudinal roller 9, which can reduce the amount of wear and extend the service life of the tail rope and the roller.

[0026] The surface of the transverse roller 8 and the longitudinal roller 9 is sprayed with polyurethane, which has good wear resistance, shock absorption performance, and corrosion resistance. It is not easy to corrode in the wellbore environment with large water vapor, which can extend the service life of the equipment. At the same time, the roller has a certain elasticity. After contacting the tail rope, the tail rope can be slightly bounced off, reducing the friction range, and the fallen objects in the wellbore will also be bounced off, reducing the possibility of damage; the roller is light in weight, which is easy to install, inspect and replace.

[0027] As shown in the figure, the transverse roller bearing seat 3 and the longitudinal roller bearing seat 7 are fixed to the fixed crossbeam 1 by the transverse roller fixing bolts 2 and the longitudinal roller fixing bolts 6 respectively, which are convenient for disassembly and installation.

[0028] As shown in the figure, the winding protection device is a rope fixing bracket 11 welded to the lower part of one end of the two fixed cross beams 1 in the middle of the shaft, and a pulley bracket 13 and a protective pipe bracket 15 are welded to the lower part of the other end. A fixed pulley 16 is installed on the pulley bracket 13, and a vertical protective pipe 14 is fixed on the protective pipe bracket 15; one end of the rope 12 is fixed to the rope fixing bracket 11, and the other end is fixedly connected to the trigger block 18 after passing through the fixed pulley 16, and the trigger block 18 is suspended in the center of the protective pipe 14; a proximity switch 17 corresponding to the trigger block 18 is fixed inside the protective pipe 14, and the signal output end of the proximity switch 17 is connected to the controller of the mine hoisting system through a cable.

[0029] The proximity switch 17 is a magnetic induction switch, and the trigger block 18 is a high-strength magnet.

[0030] The working process of the utility model is as follows:

[0031] During the operation of the lifting system, when the tail rope 10 swings in an undirected manner to balance the tension difference of the head rope, the tail rope 10 touches the transverse roller 8 or the longitudinal roller 9. Under the influence of the linear velocity of the tail rope 10, the transverse roller 8 or the longitudinal roller 9 rotates. At the same time, the roller itself is made of polyurethane. After the tail rope 10 collides with it, it rebounds under the influence of the elastic force of the roller. The elastic force is uncertain in size and direction, so that when it rebounds to the transverse roller 8 or the longitudinal roller 9 again, the contact position changes, avoiding frequent friction and damage to the roller at the same position. Due to the isolation effect of the transverse roller 8 and the longitudinal roller 9 arranged perpendicular to each other, adjacent tail ropes will not contact or knot; once the tail rope 10 is knotted, the tail rope 10 will move upward and touch the pull rope 12. The pull rope 12 will knot with the tail rope 10, causing the trigger block 18 to move upward and away from the proximity switch 17. The output signal of the proximity switch 17 changes, triggering the action of the safety circuit of the lifting system, and the lifting system stops suddenly to prevent the tail rope 10 from being twisted off, thereby ensuring the normal operation of the lifting system.

[0032] An embodiment of the present utility model is as follows:

[0033] The fixed crossbeam 1 is a steel beam with a length of 3550 mm, a width of 200 mm, and a height of 200 mm;

[0034] The transverse roller fixing bolts 2 and the longitudinal roller fixing bolts 6 are 8.8 grade high-strength hexagonal head bolts M26*60;

[0035] The horizontal roller bearing seat 3 and the longitudinal roller bearing seat 7 are φ100mm, SL series four-bolt reinforced bearing seats;

[0036] The transverse roller end cover bolts 4 and the longitudinal roller end cover bolts 5 are 8.8 grade high-strength hexagonal head bolts M8*20;

[0037] The transverse roller 8 is a polyurethane roller with a length of 2400 mm and a diameter of 300 mm, and the thickness of the polyurethane coating is 125 mm;

[0038] The longitudinal roller 9 is a polyurethane roller with a length of 1000 mm and a diameter of 300 mm, and the thickness of the polyurethane coating is 125 mm;

[0039] The length of the pull rope 12 is 0.5 m and the diameter is 16 mm;

[0040] The protective tube 14 is a plastic round tube with a length of 1.5m and a diameter of 2 inches;

[0041] The proximity switch 17 uses MM18-70APS-ZUK;

[0042] The size of the trigger block 18 is 40*20*10 mm.

Claims

1. A tail rope isolation and protection device for a mine hoisting system, characterized in that: The invention comprises two rope guide mechanisms symmetrically arranged on both sides of a U-shaped tail rope (10), each rope guide mechanism comprising two transverse rollers (8) and a plurality of longitudinal rollers (9), the two transverse rollers (8) being arranged horizontally and parallel to each other, a row of tail ropes (10) passing through between the two transverse rollers (8), and the two ends of each transverse roller (8) being rotatably connected to a fixed crossbeam (1) in a wellbore via a transverse roller bearing seat (3); the longitudinal rollers (9) being arranged horizontally and perpendicular to the transverse rollers (8), the plurality of longitudinal rollers (9) being arranged axially along the transverse rollers (8), the two ends of each longitudinal roller (9) being rotatably connected to the fixed crossbeam (1) via a longitudinal roller bearing seat (7), a tail rope (10) passing between every two adjacent longitudinal rollers (9), and a winding protection device being provided on the inner side of the U-shaped tail rope (10).

2. The tail rope isolation and protection device of a mine hoisting system according to claim 1 is characterized in that: The winding protection device comprises a pull rope (12), a pull rope fixing bracket (11), a fixed pulley (16), a pulley bracket (13), a proximity switch (17) and a trigger block (18). The pull rope fixing bracket (11) and the pulley bracket (13) are respectively located on both sides of the shaft and fixed to the lower part of the fixed crossbeam (1). The fixed pulley (16) is fixed to the pulley bracket (13). The pull rope (12) passes through the inner side of the U-shaped tail rope (10). One end of the pull rope (12) is fixed to the pull rope fixing bracket (11), and the other end is fixedly connected to the trigger block (18) after passing the fixed pulley (16). The proximity switch (17) is fixed below the fixed crossbeam (1) and corresponds to the trigger block (18). The signal output end of the proximity switch (17) is connected to the controller of the mine hoisting system.

3. The tail rope isolation and protection device of a mine hoisting system according to claim 2 is characterized in that: The curling protection device further comprises a protection tube (14) and a protection tube bracket (15), the trigger block (18) is suspended inside the protection tube (14), the protection tube (14) is vertically fixed below the fixed crossbeam (1) through the protection tube bracket (15), and the proximity switch (17) is fixed on the inner wall of the protection tube (14).

4. The tail rope isolation and protection device for a mine hoisting system according to claim 3 is characterized in that: The proximity switch (17) is a magnetic induction switch, and the trigger block (18) is a high-strength magnet.

5. A tail rope isolation and protection device for a mine hoisting system according to any one of claims 1 to 4, characterized in that: same The two transverse rollers (8) in the rope guide mechanism have the same height, the plurality of longitudinal rollers (9) are arranged at equal intervals, the distance between two adjacent longitudinal rollers (9) is equal to the distance between the two transverse rollers (8); the distance from each tail rope (10) to the two transverse rollers (8) is equal, and the distance from each tail rope (10) to the two adjacent longitudinal rollers (9) is also equal.

6. The tail rope isolation and protection device for a mine hoisting system according to claim 5 is characterized in that: The transverse roller bearing seat (3) and the longitudinal roller bearing seat (7) are connected to the fixed crossbeam (1) via bolts.

7. The tail rope isolation and protection device of a mine hoisting system according to claim 6 is characterized in that: Each rope guide mechanism is provided with two fixed cross beams (1), which are of the same height and are parallel to the transverse rollers (8). The two transverse rollers (8) are respectively mounted on opposite side walls of the two fixed cross beams (1). The two ends of each longitudinal roller (9) are respectively rotatably connected to the tops of the two fixed cross beams (1) via longitudinal roller bearing seats (7).

8. The tail rope isolation and protection device for a mine hoisting system according to claim 7 is characterized in that: The fixed cross beam (1) is a fixed steel beam in a mine hoist shaft.

9. The tail rope isolation and protection device for a mine hoisting system according to claim 8 is characterized in that: The transverse roller (8) and the longitudinal roller (9) are made of polyurethane.

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