Coal gangue shunting and locking protection device for underground main transportation and transfer point of coal mine

Abstract

The utility model provides an underground coal mine main transportation transfer point coal gangue shunting latching protection device, which relates to the technical field of coal gangue shunting, and comprises a first machine tool, a top frame and a second machine tool, the top frame is arranged at the top of the first machine tool, the second machine tool is arranged at the bottom of the first machine tool, and a conveyor belt is arranged on the second machine tool. A plurality of screening shafts are rotationally connected to the inner side of the first machine tool, a material crushing mechanism is arranged at the top of the top frame, and protection mechanisms are symmetrically arranged on the two sides of the top frame; the output end of the first hydraulic cylinder is hinged to the connecting rod through the connecting base, the connecting rod and the rotating arm are fixed together, the first hydraulic cylinder can drive the connecting rod to rotate around the hinge point of the rotating arm, the baffle and the connecting rod are fixed together so as to drive the baffle to rotate, and when the baffle rotates downwards, the baffle can rotate around the hinge point of the rotating arm. The two sides of the top frame can be closed, people are prevented from being hurt by broken stones burst out when the crushing mechanism crushes gangue, and then the first hydraulic cylinder drives the baffle to rotate upwards to reset.

Description

Technical Field

[0001] The utility model relates to the technical field of coal-gangue diversion, in particular to a coal-gangue diversion locking protection device at the main transfer point in a coal mine underground. Background Technique

[0002] Coal-gangue diversion is a key technology and management measure in coal mine production. The main purpose is to effectively separate the gangue generated from tunneling and the raw coal from the mining face, reduce the pollution of the raw coal entering the coal preparation plant by gangue, reduce production costs, and improve economic benefits.

[0003] The main belt conveyor is the key thoroughfare of the coal and gangue diversion system in the whole mine. The switching of coal-gangue diversion is realized by the forward and backward movement of the movable belt. The switching cycle time of this technical process is long, and there is a risk of derailment when moving due to accumulated goods on the track. When switching, both ends of the coal bunker and the gangue bunker are open, and it is necessary to manually operate to close the safety door, which poses a risk of personnel falling. Therefore, the utility model proposes a coal-gangue diversion locking protection device at the main transfer point in a coal mine underground to solve the above problems. Content of the Utility Model

[0004] In view of the above problems, the utility model proposes a coal-gangue diversion locking protection device at the main transfer point in a coal mine underground to solve the problem that both ends of the coal bunker and the gangue bunker are open during switching in the prior art, and it is necessary to manually operate to close the safety door, resulting in a risk of personnel falling.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A coal-gangue diversion locking protection device at the main transfer point in a coal mine underground includes a first machine tool, a top frame, and a second machine tool. A top frame is provided on the top of the first machine tool, a second machine tool is provided at the bottom of the first machine tool, a conveyor belt is installed on the second machine tool, a plurality of screening shafts are rotatably connected inside the first machine tool, a crushing mechanism is provided on the top of the top frame, and protection mechanisms are symmetrically provided on both sides of the top frame.

[0006] Further improvement lies in that: The protection mechanism includes a first hydraulic cylinder, a rotating arm, a baffle, a connecting seat, and a connecting rod. Hinge seats are symmetrically and fixedly connected to both ends of the top of the top frame. A first hydraulic cylinder is hinged to the top of the hinge seat. A group of rotating arms are symmetrically hinged on both sides of the top frame. A connecting rod is fixedly connected between a group of the rotating arms. A baffle is fixedly connected to the bottom end of the connecting rod. The output end of the first hydraulic cylinder is hinged to the top of the connecting rod through the connecting seat.

[0007] Further improvement lies in that: The crushing mechanism includes a second hydraulic cylinder and a tool rest. The second hydraulic cylinder is fixedly connected to the top of the top frame. The output end of the tool rest is fixedly connected to the tool rest. The tool rest includes cutting knives and an assembly plate, and a plurality of cutting knives are welded to the bottom of the tool rest.

[0008] A further improvement lies in that: the transmission teeth on the screening shaft are arranged in a pentagonal structure, the positions of the transmission teeth between adjacent screening shafts are staggered with each other, and the spacing distances between them are equal.

[0009] A further improvement lies in that: the screening shaft and the conveyor belt are parallel to each other vertically. A motor is installed on one side of the first machine tool, and a drive box is fixed to the outside of the first machine tool. A rotating mechanism is provided inside the drive box.

[0010] A further improvement lies in that: the rotating mechanism includes a belt pulley and a belt. One end of the screening shaft penetrates through the inside of the drive box and is fixedly connected to the belt pulley. The outer walls of multiple belt pulleys are engaged with the belt. A motor is installed on the outside of the first machine tool, and the output end of the motor is fixedly connected to one end of one of the screening shafts.

[0011] A further improvement lies in that: one end of the motor is fixedly connected to a flange plate. Mounting holes are symmetrically provided on both sides of the flange plate. Bolts are symmetrically provided inside the mounting holes. The flange plate is detachably connected to the drive box through the bolts.

[0012] The beneficial effect of the present utility model is that: the output end of the first hydraulic cylinder is hinged to the connecting rod through the connecting seat, and the connecting rod is fixed to the rotating arm. The first hydraulic cylinder can drive the connecting rod to rotate around the hinge point of the rotating arm, and the baffle is fixed to the connecting rod to drive the baffle to rotate. After the baffle rotates downward, the two sides of the top frame can be closed to prevent the broken stones ejected by the crushing mechanism from hurting people. Then the first hydraulic cylinder drives the baffle to rotate upward to reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the front view of the present utility model;

[0014] Figure 2 is the structural schematic diagram of the protection mechanism of the present utility model;

[0015] Figure 3 is the structural schematic diagram of the crushing mechanism of the present utility model;

[0016] Figure 4 is the structural schematic diagram of the rotating mechanism of the present utility model.

[0017] Wherein: 1. First machine tool; 2. Top frame; 3. Second machine tool; 4. Conveyor belt; 5. Hinge seat; 6. First hydraulic cylinder; 7. Rotating arm; 8. Baffle; 9. Connecting seat; 10. Second hydraulic cylinder; 11. Tool rest; 12. Screening shaft; 13. Motor; 14. Drive box; 15. Belt pulley; 16. Belt; 17. Connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0019] According to Figure 1 , 2 , 3, and 4, this embodiment proposes a coal and gangue shunt locking protection device for the main transfer point underground in a coal mine, which includes a first machine tool 1, a top frame 2, and a second machine tool 3. A top frame 2 is provided on the top of the first machine tool 1, a second machine tool 3 is provided at the bottom of the first machine tool 1, a conveyor belt 4 is installed on the second machine tool 3, and a plurality of screening shafts 12 are rotatably connected inside the first machine tool 1. A crushing mechanism is provided on the top of the top frame 2, and protection mechanisms are symmetrically provided on both sides of the top frame 2. The coal mine raw materials are placed on one side of the first machine tool 1, and the screening shafts 12 inside the first machine tool 1 rotate to play a role in shunting the coal mine raw materials, separating the gangue from the coal. When there are relatively large pieces of gangue staying on the screening shafts 12, the gangue is crushed by the crushing mechanism. Among them, the protection mechanisms can enclose both sides of the first machine tool 1 to prevent the crushed stones ejected by the crushing of the gangue by the crushing mechanism from hurting people.

[0020] The transmission teeth on the screening shafts 12 are set in a pentagonal structure, and the positions of the transmission teeth between adjacent screening shafts 12 are staggered with each other, and the interval distances between them are equal.

[0021] The screening shafts 12 and the conveyor belt 4 are parallel to each other vertically. A motor 13 is installed on one side of the first machine tool 1, a drive box 14 is fixed on the outside of the first machine tool 1, and a rotating mechanism is provided inside the drive box 14. The rotating mechanism includes a belt pulley 15 and a belt 16. One end of the screening shaft 12 penetrates inside the drive box 14 and is fixedly connected with the belt pulley 15. The outer walls of a plurality of belt pulleys 15 are engaged with the belt 16. A motor 13 is installed on the outside of the first machine tool 1, and the output end of the motor 13 is fixedly connected with one end of one of the screening shafts 12. The motor 13 can drive the screening shaft 12 at its output end to rotate. One ends of a plurality of screening shafts 12 are all connected with belt pulleys 15, and the plurality of belt pulleys 15 are connected with each other through the belt 16, so that the motor 13 can drive a plurality of screening shafts 12 to rotate simultaneously, separating the gangue from the coal. The finely crushed gangue falls to the conveyor belt 4 through the gaps between the screening shafts 12, while the coal blocks are conveyed outwards through the screening shafts 12.

[0022] One end of the motor 13 is fixedly connected with a flange plate. Mounting holes are symmetrically provided on both sides of the flange plate, and bolts are symmetrically provided inside the mounting holes. The flange plate is detachably connected with the drive box 14 through the bolts.

[0023] The crushing mechanism includes a second hydraulic cylinder 10 and a tool rest 11. The top of the top frame 2 is fixedly connected to the second hydraulic cylinder 10. The output end of the tool rest 11 is fixedly connected to the tool rest 11. The tool rest 11 includes a cutting tool and an assembly plate, and a plurality of cutting tools are welded to the bottom of the tool rest 11. The output end of the second hydraulic cylinder 10 can drive the tool rest 11 to move downward, and the tool rest 11 is used to crush the relatively large gangue. After that, the second hydraulic cylinder 10 drives the tool rest 11 to move upward and reset.

[0024] The protection mechanism includes a first hydraulic cylinder 6, a rotating arm 7, a baffle 8, a connecting seat 9 and a connecting rod 17. Hinge seats 5 are symmetrically and fixedly connected to both ends of the top of the top frame 2. The top of the hinge seat 5 is hinged to the first hydraulic cylinder 6. A group of rotating arms 7 are symmetrically hinged to both sides of the top frame 2. A connecting rod 17 is fixedly connected between the group of rotating arms 7. The bottom end of the connecting rod 17 is fixedly connected to the baffle 8. The output end of the first hydraulic cylinder 6 is hinged to the top of the connecting rod 17 through the connecting seat 9. The output end of the first hydraulic cylinder 6 is hinged to the connecting rod 17 through the connecting seat 9, and the connecting rod 17 is fixed to the rotating arm 7. The first hydraulic cylinder 6 can drive the connecting rod 17 to rotate around the hinge point of the rotating arm 7. One end of the first hydraulic cylinder 6 is hinged to the hinge seat 5. The first hydraulic cylinder 6 can rotate along with the connecting rod 17 to avoid interfering with the rotation of the connecting rod 17. The baffle 8 is fixed to the connecting rod 17 to drive the baffle 8 to rotate. When the baffle 8 rotates downward, the two sides of the top frame 2 can be closed to prevent the crushed stones ejected by the crushing mechanism from injuring people. After that, the first hydraulic cylinder 6 drives the baffle 8 to rotate upward and reset.

[0025] For the coal gangue shunt locking protection device at the main transfer point in the underground coal mine, the output end of the first hydraulic cylinder 6 is hinged to the connecting rod 17 through the connecting seat 9, and the connecting rod 17 is fixed to the rotating arm 7. The first hydraulic cylinder 6 can drive the connecting rod 17 to rotate around the hinge point of the rotating arm 7. The baffle 8 is fixed to the connecting rod 17 to drive the baffle 8 to rotate. When the baffle 8 rotates downward, the two sides of the top frame 2 can be closed to prevent the crushed stones ejected by the crushing mechanism from injuring people. After that, the first hydraulic cylinder 6 drives the baffle 8 to rotate upward and reset.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal gangue diversion and locking protection device for the main transfer point underground in a coal mine, comprising a first machine tool (1), a top frame (2) and a second machine tool (3), characterized in that: A top frame (2) is provided at the top of the first machine tool (1), a second machine tool (3) is provided at the bottom of the first machine tool (1), a conveyor belt (4) is installed on the second machine tool (3), and a plurality of screening shafts (12) are rotatably connected inside the first machine tool (1). A material crushing mechanism is provided at the top of the top frame (2), and protection mechanisms are symmetrically provided on both sides of the top frame (2). The protection mechanism includes a first hydraulic cylinder (6), a rotating arm (7), a baffle (8), a connecting seat (9) and a connecting rod (17). Hinge seats (5) are symmetrically and fixedly connected to both ends of the top of the top frame (2). The first hydraulic cylinder (6) is hinged to the top of the hinge seat (5). A group of rotating arms (7) are symmetrically hinged to both sides of the top frame (2). A connecting rod (17) is fixedly connected between the group of rotating arms (7). The bottom end of the connecting rod (17) is fixedly connected to the baffle (8). The output end of the first hydraulic cylinder (6) is hinged to the top of the connecting rod (17) through the connecting seat (9).

2. The coal gangue shunt locking protection device for the main transfer point underground in a coal mine according to claim 1, characterized in that: The material crushing mechanism includes a second hydraulic cylinder (10) and a tool rest (11). The second hydraulic cylinder (10) is fixedly connected to the top of the top frame (2). The output end of the tool rest (11) is fixedly connected to the tool rest (11). The tool rest (11) includes a cutting tool and an assembly plate, and a plurality of cutting tools are welded to the bottom of the tool rest (11).

3. The coal gangue diversion and locking protection device for the main transfer point underground in a coal mine according to claim 1, characterized in that: The transmission teeth on the screening shaft (12) are of a pentagonal structure, and the positions of the transmission teeth between adjacent screening shafts (12) are staggered, and the interval distances between them are equal.

4. A coal gangue diversion and interlock protection device for the main transfer point in underground coal mines according to claim 1, characterized in that: The screening shaft (12) and the conveyor belt (4) are parallel to each other vertically. A motor (13) is installed on one side of the first machine tool (1). A drive box (14) is fixed to the outside of the first machine tool (1), and a rotating mechanism is provided inside the drive box (14).

5. The coal gangue diversion and interlock protection device for the main transfer point underground in a coal mine according to claim 4, characterized in that: The rotating mechanism includes a belt pulley (15) and a belt (16). One end of the screening shaft (12) penetrates into the inside of the drive box (14) and is fixedly connected to the belt pulley (15). The outer walls of the plurality of belt pulleys (15) are engaged with the belt (16). A motor (13) is installed on the outside of the first machine tool (1), and the output end of the motor (***13***) is fixedly connected to one end of the screening shaft (12).

6. The coal gangue shunting and locking protection device for the main transfer point in the coal mine according to claim 5, characterized in that: One end of the motor (13) is fixedly connected to a flange. Mounting holes are symmetrically provided on both sides of the flange. Bolts are symmetrically provided inside the mounting holes. The flange is detachably connected to the drive box (14) through bolts.

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