Mine hoist protection device

Abstract

The utility model discloses a protection device for a mine hoist, which relates to the technical field of mine hoists and comprises a box body, a coupling rod is rotatably mounted in the box body, a linkage disc is fixedly sleeved on one side of the coupling rod, a rotating speed sensor for detecting the rotating speed of the coupling rod is arranged in the box body, and a brake component capable of clamping the linkage disc is further mounted in the box body. The braking assembly comprises two fixing plates, a right-hand and left-hand threaded rod driven by the power assembly to rotate is installed between the two fixing plates, threaded blocks are connected to the right-hand threaded section and the left-hand threaded section of the right-hand and left-hand threaded rod in a threaded mode, limiting blocks are arranged on the sides, close to the side wall of the box body, of the two threaded blocks, and braking plates are installed on the other sides of the two threaded blocks. The two brake plates are located on the two sides of the linkage disc correspondingly, and a limiting groove for the limiting block to slide is formed in the box body. The rotating speed sensor is used for monitoring the rotating speed of the coupling rod in real time, when the rotating speed of the coupling rod is too high, the two brake plates clamp the brake linkage disc, and the protection effect on the mine hoist is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine hoists, in particular to a mine hoist protection device. Background Art

[0002] A vertical shaft refers to a mine with a shaft perpendicular to the ground, serving underground mining. It is a vertical passage dug in the stratum that leads directly to the ground. The mine hoist is the main transportation equipment connecting the underground and the ground. It can make the material supply in the mine more convenient, thereby improving the production efficiency of the mine. In order to ensure the safety of the mine hoist during operation, it is necessary to add corresponding braking protection devices to the mine hoist.

[0003] The Chinese utility model patent with the announcement number CN218665170U discloses a mine hoist braking device, comprising a table, wherein support frames are respectively provided on the front and rear of the upper wall of the table, a winding shaft is provided between the two support frames, brake plates are provided on both sides of the winding shaft, and slide bars are provided on the opposite sides of the table respectively through slide grooves, the bottom end of the slide bar is connected to a slider, the other end of the slide bar is connected to a connecting rod, the other end of the connecting rod is connected to a clamping plate, and the table is provided with a driving mechanism for driving the two sliders to slide left and right. Compared with the prior art, the advantage of this utility model is that it can quickly brake the winding shaft and speed up the braking speed of the hoist winding shaft. However, in the above scheme, the braking protection effect is poor, and it is not provided with a corresponding sensor. When the main shaft speed is too fast due to a fault or other factors, it cannot automatically clamp and brake. Utility Model Content

[0004] The utility model aims to provide a mine hoist protection device, aiming to solve the technical problems in the prior art of poor braking protection effect and failure to automatically clamp and brake when the main shaft speed is too fast.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A mine hoist protection device includes a box body, a coupling rod is rotatably installed in the box body, a linkage disk is fixed on one side of the coupling rod, a speed sensor for detecting the speed of the coupling rod is provided in the box body, and a brake assembly capable of clamping the linkage disk is also installed in the box body, the brake assembly includes two fixed plates respectively fixed on both sides of the inner wall of the box body, a positive and negative threaded rod driven to rotate by a power assembly is installed between the two fixed plates, the positive and negative threaded sections of the positive and negative threaded rods are both screwed with threaded blocks, and the two threaded blocks are each provided with a limit block on one side close to the side wall of the box body, and a brake plate is installed on the other side of the two threaded blocks, the two brake plates are respectively located on both sides of the linkage disk, and a limit groove for the limit block to slide is opened on the box body.

[0007] Preferably, sliding plates are fixed to the two threaded blocks, and slots are provided on the opposite sides of the two sliding plates. A clamping plate that matches the slots is provided on the brake plate, and fixing bolts are screwed onto the sliding plates, and fixing screw holes that match the fixing bolts are provided on the clamping plates.

[0008] Preferably, the card slot is convex.

[0009] Preferably, anti-slip grooves are provided on the opposite surfaces of the two brake plates.

[0010] Preferably, friction grooves evenly distributed along the circumference of the linkage disk are provided on both sides of the linkage disk.

[0011] Preferably, a distance measuring assembly is provided at the lower end of the box, which includes a connecting rod with one end fixed to the box, a distance measuring seat fixed to the other end of the connecting rod, and an infrared rangefinder with a probe extending below the connecting rod installed on the distance measuring seat.

[0012] Preferably, a protective plate that can slide to the bottom of the probe is installed at the lower end of the connecting rod.

[0013] Preferably, a sliding groove is provided at the lower end of the connecting rod, and a slider that slides in the sliding groove is fixed to the protective plate.

[0014] Preferably, the connecting rod is provided with two positioning screw holes respectively located on both sides of the slide groove, and the protective plate is provided with a positioning bolt that can be screwed into one of the positioning screw holes.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. In the utility model, a speed sensor is used to monitor the speed of the coupling rod in real time. When the speed of the coupling rod is too fast, the power component can drive the forward and reverse threaded rods to rotate, so that the two threaded blocks slide toward each other, thereby driving the sliding plate to slide, and then driving the two brake plates to clamp the linkage disk, braking the linkage disk, thereby braking the coupling rod, and using anti-skid patterns and friction grooves to increase the friction force between the brake plate and the linkage disk surface, thereby improving the clamping and braking effect on both sides of the linkage disk, and improving the protection effect on the mine hoist.

[0017] 2. The utility model uses an infrared rangefinder to monitor the distance between the lifting container and the mine hoist in real time. When the lifting container is too close, the power component can drive the forward and reverse threaded rods to rotate, so that the two threaded blocks slide toward each other, thereby driving the sliding plate to slide, and then driving the two brake plates to clamp the linkage disk, braking the linkage disk, thereby braking the coupling rod, and using anti-skid patterns and friction grooves to increase the friction force between the brake plate and the linkage disk surface, thereby improving the clamping and braking effect on both sides of the linkage disk and improving the protection effect on the mine hoist.

[0018] 3. The utility model protects the infrared rangefinder through a protective plate. When the mine hoist is working, the protective plate is moved to not block the infrared rangefinder, and the infrared rangefinder monitors the distance between the lifting container and the mine hoist to achieve top impact protection. When the mine hoist is not in use, the protective plate blocks the bottom of the infrared rangefinder to improve its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the first embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the exploded structure of the brake assembly of the utility model;

[0022] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at A;

[0023] Figure 5 This is a schematic cross-sectional view of the second embodiment of the present invention;

[0024] Figure 6 yes Figure 5 Schematic diagram of the exploded structure of the ranging component.

[0025] In the figure, the door body 1, the support leg 2, the distance measuring component 3, the distance measuring seat 301, the slide groove 302, the positioning screw hole 303, the positioning bolt 304, the anti-slip ridge 305, the protective plate 306, the slider 307, the infrared rangefinder 308, the connecting rod 4, the coupling rod 5, the box body 6, the speed sensor 7, the ventilation hole 8, the brake assembly 9, the servo motor 901, the fixing bolt 902, the clamping plate 903, the fixing screw hole 904, the brake plate 905, the anti-slip pattern 906, the clamping groove 907, the sliding plate 908, the limit block 909, the limit groove 910, the fixing plate 911, the positive and negative threaded rods 912, the threaded block 913, the linkage disk 10, the controller 11, and the friction groove 12. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] The orientations mentioned in this specification are based on the orientations of the mine hoist protection device of the present invention during normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0028] Example 1:

[0029] like Figures 1 to 4As shown, a mine hoist protection device includes a box body 6, in which a coupling rod 5 is rotatably installed, and a linkage disk 10 is fixedly mounted on one side of the coupling rod 5. A speed sensor 7 for detecting the speed of the coupling rod 5 is provided in the box body 6, and a brake assembly 9 capable of clamping the linkage disk 10 is also installed in the box body 6. The brake assembly 9 includes two fixed plates 911 respectively fixed on both sides of the inner wall of the box body 6, and a positive and negative threaded rod 912 driven to rotate by a power assembly is installed between the two fixed plates 911. The positive thread section and the negative thread section of the positive and negative threaded rod 912 are both screwed with thread blocks 913, and the two thread blocks 913 are each provided with a limit block 909 on one side close to the side wall of the box body 6, and a brake plate 905 is installed on the other side of the two thread blocks 913. The two brake plates 905 are respectively located on both sides of the linkage disk 10, and a limit groove 910 for the limit block 909 to slide is opened on the box body 6. One end of the coupling rod passes through the box body 6. The cooperation between the limiting groove 910 and the limiting block 909 restricts the threaded block 913 to slide along the limiting groove 910 and cannot rotate with the screw, thereby converting the rotational motion of the screw into linear motion of the threaded block 913.

[0030] When in use, first connect the coupling rod 5 to the shaft of the mine hoist. The main shaft and the coupling rod 5 can be connected through the coupling, and then the protective device is installed and fixed at a suitable position. The speed sensor 7 is used to monitor the speed of the coupling rod 5 in real time. When the speed of the coupling rod 5 is too fast, the power component can drive the forward and reverse threaded rods 912 to rotate, so that the two threaded blocks 913 slide toward each other, and then drive the two sliding plates 908 to slide toward each other, and then drive the two brake plates 905 to clamp the linkage disk 10, brake the linkage disk 10, and improve the protection effect of the mine hoist.

[0031] The front of the box body 6 is fixedly connected to the door body 1 through a hinge, and the four corners of the bottom end of the box body 6 are fixedly connected to the supporting legs 2.

[0032] The power assembly is a servo motor 901 mounted on a fixed plate 911 on one side. The output end of the servo motor 901 passes through the fixed plate 911 and is fixedly connected to the forward and reverse threaded rods 912 through a coupling.

[0033] The housing 6 is provided with a controller 11, which is electrically connected to the servo motor 901 and the speed sensor 7. When the speed of the coupling rod 5 is too fast, the controller 11 controls the servo motor 901 to operate and clamp the coupling disk 10.

[0034] Preferably, a sliding plate 908 is fixed to each of the two threaded blocks 913. Slots 907 are defined on opposing sides of each sliding plate 908. A retaining plate 903 is provided on the brake plate 905, which mates with the retaining plate 907. A fixing bolt 902 is threaded onto the sliding plate 908, and a fixing screw hole 904 is defined on the retaining plate 903, which mates with the fixing bolt 902. The retaining plate 907 and retaining plate 903 cooperate to mount the brake plate 905 on the sliding plate 908, facilitating installation and removal of the brake plate 905. If the brake plate 905 becomes severely worn or damaged, it can be removed for maintenance or replacement. The fixing bolt 902 and fixing screw hole 904 cooperate to secure the brake plate 905 to the sliding plate 908, preventing it from slipping off.

[0035] Furthermore, in order to improve the stability of the sliding plate 908, a guide block can be set at the lower end of the sliding plate 908 away from the threaded hole, and a guide groove compatible with the guide block can be opened at the bottom of the box body 6. When the sliding plate 908 moves, the guide block moves in the guide groove.

[0036] As a preferred example of this embodiment, the slot 907 is convex and the clamping plate 903 is made into a convex structure that matches the slot 907. The sliding fit between the convex clamping plate 903 and the slot 907 improves the stability of the sliding installation between the brake plate 905 and the sliding plate 908.

[0037] Furthermore, anti-skid patterns 906 are provided on the opposing surfaces of the two brake plates 905. The anti-skid patterns 906 are isosceles trapezoidal in top view, which improve the clamping braking friction between the brake plates 905 and the linkage disc 10.

[0038] Furthermore, friction grooves 12 are uniformly distributed along the circumference of the linkage disk 10 on both sides. The friction grooves 12 are wavy in shape, and the wavy friction grooves 12 further increase the clamping braking friction between the linkage disk 10 and the brake plate 905.

[0039] In addition, ventilation holes 8 are opened at equal intervals on one side of the box 6. The ventilation holes 8 are inclined at an angle of thirty degrees to the horizontal direction. The inclined ventilation holes 8 can realize ventilation and heat dissipation inside the box 6 while reducing the entry of external dust into the interior of the box 6.

[0040] Example 2:

[0041] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, a mine hoist protection device includes a box body 6, in which a coupling rod 5 is rotatably installed, and a linkage disk 10 is fixedly mounted on one side of the coupling rod 5. A speed sensor 7 for detecting the speed of the coupling rod 5 is provided in the box body 6, and a brake assembly 9 capable of clamping the linkage disk 10 is also installed in the box body 6. The brake assembly 9 includes two fixed plates 911 respectively fixed on both sides of the inner wall of the box body 6, and a positive and negative threaded rod 912 driven to rotate by a power assembly is installed between the two fixed plates 911. The positive thread section and the negative thread section of the positive and negative threaded rod 912 are both screwed with thread blocks 913, and the two thread blocks 913 are each provided with a limit block 909 on one side close to the side wall of the box body 6, and a brake plate 905 is installed on the other side of the two thread blocks 913. The two brake plates 905 are respectively located on both sides of the linkage disk 10, and a limit groove 910 for the limit block 909 to slide is opened on the box body 6. The cooperation between the limiting groove 910 and the limiting block 909 restricts the threaded block 913 to slide along the limiting groove 910 and cannot rotate with the screw, thereby converting the rotational motion of the screw into linear motion of the threaded block 913.

[0042] Among them, a ranging component 3 is provided at the lower end of the box body 6, and the ranging component 3 includes a connecting rod 4 with one end fixed to the box body 6, and the other end of the connecting rod 4 is fixed to a ranging seat 301, and an infrared rangefinder 308 with a probe extending to the bottom of the connecting rod 4 is installed on the ranging seat 301.

[0043] When in use, first connect the coupling rod 5 to the shaft of the mine hoist, then install and fix the protective device in a suitable position, use the speed sensor 7 to monitor the speed of the coupling rod 5 in real time, and use the infrared rangefinder 308 to monitor the distance between the lifting container and the mine hoist in real time. When the speed of the coupling rod 5 is too fast or the lifting container is too close, the power component can drive the forward and reverse threaded rods 912 to rotate, so that the two threaded blocks 913 slide toward each other, thereby driving the sliding plate 908 to slide, and then driving the two brake plates 905 to clamp the linkage disk 10, performing emergency braking on the linkage disk 10, and improving the protection effect of the mine hoist.

[0044] The power assembly is a servo motor 901 mounted on a fixed plate 911 on one side. The output end of the servo motor 901 passes through the fixed plate 911 and is fixedly connected to the forward and reverse threaded rods 912 through a coupling.

[0045] Controller 11 is installed within housing 6 and is electrically connected to servo motor 901, speed sensor 7, and infrared rangefinder 308. Speed ​​sensor 7 monitors the speed of coupling rod 5 in real time and transmits a speed signal to controller 11. Infrared rangefinder 308 monitors the distance between the hoist container and the mine hoist in real time and transmits a distance signal to controller 11. If coupling rod 5 rotates too fast or the hoist container is too close, controller 11 activates servo motor 901, clamping and braking coupling disc 10.

[0046] As a preferred example of this embodiment, a protective plate 306 that can slide under the probe is installed at the lower end of the connecting rod 4. The protective plate 306 protects the infrared rangefinder 308. When the mine hoist is in operation, the protective plate 306 is moved to not block the infrared rangefinder 308, and the infrared rangefinder 308 monitors the distance between the hoist container and the mine hoist to achieve top impact protection. When the mine hoist is not in use, the protective plate 306 is moved in the opposite direction to block the bottom of the infrared rangefinder 308, thereby improving its practicality.

[0047] Furthermore, a chute 302 is formed at the lower end of the connecting rod 4, and a slider 307 is fixed to the protective plate 306 and slides within the chute 302. Preferably, two chute 302s are provided, and two sliders 307 are also provided. The sliders 307 slide within the chute. The sliders 307 have an inverted convex shape, so that the sliders 307 do not fall out of the chute 302.

[0048] Furthermore, the connecting rod 4 is provided with two positioning screw holes 303, one on either side of the chute 302. A positioning bolt 304 is mounted on the protective plate 306 and can be screwed into one of the positioning screw holes 303. Preferably, the positioning screw hole 303 is located between the two chute 302. When the mine hoist is in operation, the protective plate 306 is moved to the left to not block the infrared rangefinder 308, and the positioning bolt 304 is screwed into the left positioning screw hole 303. When the mine hoist is not in use, the positioning bolt 304 is unscrewed, and the protective plate 306 is moved to the right to directly below the infrared rangefinder 308. The protective plate 306 then shields and protects the bottom of the infrared rangefinder 308, thereby improving its practicality.

[0049] Furthermore, the bolt head of the positioning bolt 304 is fixed with anti-slip ridges 305 evenly distributed along its circumference. The anti-slip ridges 305 are arc-shaped when viewed from above. The arc-shaped anti-slip ridges 305 make it easier for the user to rotate the positioning bolt 304.

[0050] The front of the box body 6 is fixedly connected to the door body 1 through a hinge, and the four corners of the bottom end of the box body 6 are fixedly connected to the supporting legs 2.

[0051] Sliding plates 908 are fixedly attached to the two threaded blocks 913. Sliding plates 908 are each provided with a retaining slot 907 on opposite sides. A retaining plate 903 is provided on the brake plate 905, which mates with the retaining slot 907. Fixing bolts 902 are screwed onto the sliding plates 908, and retaining screw holes 904 are provided on the retaining plate 903, which mate with the retaining bolts 902. The retaining slots 907 and retaining plates 903 cooperate to mount the brake plate 905 on the sliding plates 908, facilitating installation and removal of the brake plate 905. If the brake plate 905 becomes severely worn or damaged, it can be removed for maintenance or replacement. The retaining bolts 902 and retaining screw holes 904 cooperate to secure the brake plate 905 to the sliding plate 908, preventing it from slipping off.

[0052] In order to improve the stability of the sliding plate 908, a guide block can be set at the lower end of the sliding plate 908 away from the threaded hole, and a guide groove compatible with the guide block is opened at the bottom of the box body 6. When the sliding plate 908 moves, the guide block moves in the guide groove.

[0053] The card slot 907 is convex and the card plate 903 is made into a convex structure that matches the card slot 907. The sliding fit between the convex card plate 903 and the card slot 907 improves the stability of the sliding installation between the brake plate 905 and the sliding plate 908.

[0054] The two brake plates 905 have anti-skid grooves 906 on their opposite surfaces. The anti-skid grooves 906 are isosceles trapezoidal in shape when viewed from above. The isosceles trapezoidal anti-skid grooves 906 improve the clamping braking friction between the brake plates 905 and the linkage disk 10.

[0055] Furthermore, friction grooves 12 are uniformly distributed along the circumference of the linkage disk 10 on both sides. The friction grooves 12 are wavy in shape, and the wavy friction grooves 12 further increase the clamping braking friction between the linkage disk 10 and the brake plate 905.

[0056] In addition, ventilation holes 8 are opened at equal intervals on one side of the box 6. The ventilation holes 8 are inclined at an angle of thirty degrees to the horizontal direction. The inclined ventilation holes 8 can realize ventilation and heat dissipation inside the box 6 while reducing the entry of external dust into the interior of the box 6.

[0057] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A mine hoist protection device, characterized in that: The cam is secured to the chassis and has two camshafts that are each secured to a position adjacent to the chassis, and one camshaft is secured to the chassis with a camshaft that is secured to the chassis.

2. A mine hoist protection device according to claim 1, characterized in that: The two threaded blocks are fixed with sliding plates, and the opposite sides of the two sliding plates are provided with slots. The brake plate is provided with a card plate adapted to the slots. The sliding plates are screwed with fixing bolts, and the card plates are provided with fixing screw holes adapted to the fixing bolts.

3. A mine hoist protection device according to claim 2, characterized in that: The card slot is arranged in a convex shape.

4. A mine hoist protection device according to claim 3, characterized in that: Anti-skid grooves are provided on the opposite surfaces of the two brake plates.

5. A mine hoist protection device according to claim 4, characterized in that: Both sides of the linkage disk are provided with friction grooves evenly distributed along the circumference thereof.

6. A mine hoist protection device according to claim 5, characterized in that: The lower end of the box is provided with a distance measuring assembly, which includes a connecting rod with one end fixed to the box, and a distance measuring seat fixed to the other end of the connecting rod. The distance measuring seat is equipped with an infrared rangefinder with a probe extending below the connecting rod.

7. A mine hoist protection device according to claim 6, characterized in that: The lower end of the connecting rod is provided with a protective plate which can slide to the bottom of the probe.

8. A mine hoist protection device according to claim 7, characterized in that: A sliding groove is provided at the lower end of the connecting rod, and a sliding block sliding in the sliding groove is fixedly connected to the protective plate.

9. A mine hoist protection device according to claim 8, characterized in that: The connecting rod is provided with two positioning screw holes respectively located on both sides of the slide groove, and the protective plate is provided with a positioning bolt which can be screwed into one of the positioning screw holes.

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