Cantilevered tunneling machine with safety protection for coal mine

Abstract

The utility model discloses a kind of safety protection's coal mine with cantilever type heading machine, including bottom plate, the upper surface of bottom plate is fixedly connected with lower mounting seat, the side of lower mounting seat away from bottom plate is fixedly connected with support rod, the end of support rod away from lower mounting seat is slidably connected with support cylinder, the end of support cylinder away from support rod is fixedly connected with upper mounting seat, the side of upper mounting seat away from support cylinder is fixedly connected with V-shaped protection plate, the upper surface of bottom plate is fixedly connected with buffer assembly, the both sides of bottom plate are fixedly connected with fixed plate, the utility model is formed by setting first spring and second spring, when double buffering mechanism, when top ore drop impact V-shaped protection plate, first spring first preliminary buffering impact force, second spring subsequently carries out secondary buffering, can significantly reduce the impact of ore drop to heading machine, effectively protect the structure and component of heading machine, prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to a cantilever tunneling machine for coal mines with safety protection. Background Technology

[0002] The cantilever tunneling machine for coal mines is a comprehensive tunneling equipment that integrates cutting, loading and transportation, self-propelled movement and spray dust suppression functions. It is designed specifically for tunneling underground roadways in coal mines. Its core structure is a cantilever that can be tilted and rotated. A cutting head is installed at the front end of the cantilever, which breaks coal and rock through high-speed rotating cutting teeth to meet the tunneling needs of different cross-sectional shapes.

[0003] Traditional cantilever roadheaders for coal mines mainly consist of a cutting mechanism, a transport mechanism, a traveling mechanism, a hydraulic system, and a safety protection system. Their working principle is as follows: the operator controls the lifting and lowering via a double-handle system, adjusts the cutting head position, and the cutting motor drives the cutting head to rotate, breaking up coal and rock. The cutting head must not be started under load. The swing amplitude of the cutting arm is limited when the shovel is not on the ground. After starting the second transporter, the coal and rock are transferred to the rear equipment. The machine automatically stops if the first transporter jams. The shovel and support are linked to prevent the machine body from swaying. The traveling motor drives the tracks or wheel sets, and the direction and speed are controlled by the hydraulic system. Fixed baffles protect the top of the roadheader.

[0004] However, traditional cantilever tunneling machines for coal mines still face many problems in actual use. For example, in terms of protecting against falling ore from the top, a simple baffle structure is usually used only on the top of the cantilever tunneling machine for protection. This structure lacks an effective buffer mechanism, and when the ore falls, the strong impact force it brings may still damage the cantilever tunneling machine.

[0005] Therefore, this utility model proposes a cantilever tunneling machine with safety protection for coal mines to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a cantilever tunneling machine for coal mines with safety protection, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cantilever tunneling machine for coal mines with safety protection, comprising a cantilever tunneling machine and its safety protection mechanism. The safety protection mechanism includes a base plate, with fixed plates fixedly connected to both sides of the base plate. A mounting hole is provided through the upper surface of the fixed plate. A lower mounting seat is fixedly connected to the upper surface of the base plate. A support rod is fixedly connected to the side of the lower mounting seat away from the base plate. A support cylinder is slidably connected to the end of the support rod away from the lower mounting seat. An upper mounting seat is fixedly connected to the end of the support cylinder away from the support rod. A V-shaped protective plate is fixedly connected to the side of the upper mounting seat away from the support cylinder. A buffer assembly is fixedly connected to the upper surface of the base plate.

[0008] Preferably, a first spring is sleeved on the outer wall of the support rod, one end of the first spring abuts against the upper surface of the lower mounting base, and the other end of the first spring abuts against the side of the support cylinder near the support rod.

[0009] Preferably, a first connecting seat is fixedly connected to the outer wall of the support cylinder, a first mounting shaft is fixedly connected to the outer surface of the first connecting seat, a connecting rod is rotatably connected to the outer wall of the first mounting shaft, and a first limiting block is fixedly connected to the side of the first mounting shaft away from the first connecting seat.

[0010] Preferably, the buffer assembly includes a mounting shell fixedly connected to the upper surface of the base plate, a cover plate fixedly connected to the upper surface of the mounting shell by screws, a sliding groove extending through the upper surface of the cover plate, and a second connecting seat slidably connected to the inner wall of the sliding groove.

[0011] Preferably, a second mounting shaft is fixedly connected to the outer wall of the second connecting seat, and the end of the connecting rod away from the first mounting shaft is rotatably connected to the outer wall of the second mounting shaft. A second limiting block is fixedly connected to the end of the second mounting shaft away from the second connecting seat.

[0012] Preferably, the inner wall of the mounting shell is provided with a guide groove, the inner wall of the guide groove is slidably connected with a guide block, and the side of the guide block away from the guide groove is fixedly connected with a slide block, the upper surface of the slide block being fixedly connected to the lower surface of the second connecting seat.

[0013] Preferably, a slide rod is fixedly connected to the inner wall of the mounting housing, the outer wall of the slide rod is slidably connected to the inner wall of the slide block, and a second spring is sleeved on the outer wall of the slide rod. One end of the second spring abuts against the inner wall of the mounting housing, and the other end of the second spring abuts against the outer surface of the slide block.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention forms a dual buffer mechanism by setting a first spring and a second spring. When the top ore falls and impacts the V-shaped protective plate, the first spring first buffers the impact force, and then the second spring provides secondary buffering. This can significantly reduce the impact of falling ore on the tunneling machine, effectively protect the structure and components of the tunneling machine, and extend the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support rod structure of this utility model; Figure 3 This is a schematic diagram of the support cylinder structure of this utility model; Figure 4 This is a schematic diagram of the buffer component structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the mounting shell of this utility model.

[0016] In the diagram: 1. Base plate; 2. Fixing plate; 3. V-shaped protective plate; 4. Lower mounting base; 5. Support rod; 6. Upper mounting base; 7. Buffer assembly; 701. Mounting shell; 702. Cover plate; 703. Slide groove; 704. Second connecting seat; 705. Slide seat; 706. Guide block; 707. Slide rod; 708. Guide groove; 709. Second spring; 8. Support cylinder; 9. First connecting seat; 10. First spring; 11. Connecting rod. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Please see Figures 1 to 5This utility model provides a technical solution: a cantilever tunneling machine for coal mines with safety protection, including a base plate 1. Fixing plates 2 are fixedly connected to both sides of the base plate 1. Mounting holes are provided through the upper surface of the fixing plates 2 for securing the base plate 1 to the tunneling machine using bolts or other fasteners. A lower mounting seat 4 is fixedly connected to the upper surface of the base plate 1. A support rod 5 is fixedly connected to the side of the lower mounting seat 4 away from the base plate 1. A support cylinder 8 is slidably connected to the end of the support rod 5 away from the lower mounting seat 4. An upper mounting seat 6 is fixedly connected to the end of the support cylinder 8 away from the support rod 5. A V-shaped protective plate 3 is fixedly connected to the side of the upper mounting seat 6 away from the support cylinder 8. The design of the V-shaped protective plate 3 increases the contact area with the top ore, improving the protective effect. A buffer assembly is fixedly connected to the upper surface of the base plate 1. 7. A first spring 10 is sleeved on the outer wall of the support rod 5. One end of the first spring 10 abuts against the upper surface of the lower mounting seat 4, and the other end of the first spring 10 abuts against the side of the support cylinder 8 near the support rod 5. When the V-shaped protective plate 3 is impacted by the top ore, the upper mounting seat 6 moves downward, causing the support cylinder 8 to move downward on the outer wall of the support rod 5 and squeeze the first spring 10. The first spring 10 generates elastic force through deformation, which plays a preliminary buffering role and reduces the direct impact on the tunneling machine. A first connecting seat 9 is fixedly connected to the outer wall of the support cylinder 8. A first mounting shaft is fixedly connected to the outer surface of the first connecting seat 9. A connecting rod 11 is rotatably connected to the outer wall of the first mounting shaft. A first limiting block is fixedly connected to the side of the first mounting shaft away from the first connecting seat 9 to prevent the connecting rod 11 from falling off the first mounting shaft.

[0019] In actual use, firstly, the base plate 1 is securely installed on the tunneling machine using bolts and other fasteners through the mounting holes on the fixing plate 2, ensuring that the entire protective device is firmly connected to the tunneling machine. During the tunneling process in the underground roadway of the coal mine, when ore falls from the top, the ore will first hit the V-shaped protective plate 3. After the V-shaped protective plate 3 is impacted, the upper mounting seat 6 will move downward, which in turn will cause the support cylinder 8 to move downward on the outer wall of the support rod 5. During this process, the support cylinder 8 compresses the first spring 10, and the first spring 10 deforms to generate elastic force, which initially buffers the impact force and reduces the direct impact on the tunneling machine.

[0020] The buffer assembly 7 includes a mounting shell 701 fixedly connected to the upper surface of the base plate 1. A cover plate 702 is fixedly connected to the upper surface of the mounting shell 701 by screws. A sliding groove 703 is formed through the upper surface of the cover plate 702. A second connecting seat 704 is slidably connected to the inner wall of the sliding groove 703. A second mounting shaft is fixedly connected to the outer wall of the second connecting seat 704. The end of the connecting rod 11 away from the first mounting shaft is rotatably connected to the outer wall of the second mounting shaft. A second limiting block is fixedly connected to the end of the second mounting shaft away from the second connecting seat 704 to prevent the connecting rod 11 from falling off the second mounting shaft. A guide groove 708 is formed on the inner side wall of the mounting shell 701. A guide block 706 is slidably connected to the inner wall of the guide groove 708. The side of the guide block 706 away from the guide groove 708 is fixedly connected to the guide block 706. A slide block 705 is fixedly connected, and the upper surface of the slide block 705 is fixedly connected to the lower surface of the second connecting seat 704. A slide rod 707 is fixedly connected to the inner wall of the mounting shell 701, and the outer wall of the slide rod 707 is slidably connected to the inner wall of the slide block 705. A second spring 709 is sleeved on the outer wall of the slide rod 707. One end of the second spring 709 abuts against the inner wall of the mounting shell 701, and the other end of the second spring 709 abuts against the outer surface of the slide block 705. When the support cylinder 8 moves downward, it drives the first connecting seat 9 to move downward, and pushes the second connecting seat 704 to slide on the inner wall of the slide groove 703 through the connecting rod 11. This, in turn, drives the slide block 705 to slide along the guide groove 708 on the outer wall of the slide rod 707 and squeeze the second spring 709, further improving the buffering effect.

[0021] In actual use, as the support cylinder 8 moves downward, it drives the first connecting seat 9 to move downward. The first connecting seat 9 pushes the second connecting seat 704 to slide on the inner wall of the slide groove 703 through the connecting rod 11. The second connecting seat 704 drives the slide seat 705 to slide along the guide groove 708 on the outer wall of the slide rod 707 and squeezes the second spring 709. The second spring 709 further deforms to generate elastic force, which buffers the impact force a second time, thereby further improving the buffering effect of the entire device and better protecting the tunneling machine from damage caused by falling ore.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cantilever tunneling machine for coal mines with safety protection, comprising a cantilever tunneling machine and its safety protection mechanism, wherein the safety protection mechanism comprises a base plate (1), and fixing plates (2) are fixedly connected to both sides of the base plate (1), and mounting holes are provided through the upper surface of the fixing plates (2), characterized in that: A lower mounting base (4) is fixedly connected to the upper surface of the base plate (1). A support rod (5) is fixedly connected to the side of the lower mounting base (4) away from the base plate (1). A support cylinder (8) is slidably connected to the end of the support rod (5) away from the lower mounting base (4). An upper mounting base (6) is fixedly connected to the end of the support cylinder (8) away from the support rod (5). A V-shaped protective plate (3) is fixedly connected to the side of the upper mounting base (6) away from the support cylinder (8). A buffer assembly (7) is fixedly connected to the upper surface of the base plate (1).

2. The cantilever tunneling machine for coal mines with safety protection according to claim 1, characterized in that: The outer wall of the support rod (5) is fitted with a first spring (10), one end of the first spring (10) abuts against the upper surface of the lower mounting base (4), and the other end of the first spring (10) abuts against the side of the support cylinder (8) near the support rod (5).

3. The cantilever tunneling machine for coal mines with safety protection according to claim 2, characterized in that: The outer wall of the support cylinder (8) is fixedly connected to a first connecting seat (9), the outer surface of the first connecting seat (9) is fixedly connected to a first mounting shaft, the outer wall of the first mounting shaft is rotatably connected to a connecting rod (11), and the side of the first mounting shaft away from the first connecting seat (9) is fixedly connected to a first limiting block.

4. The cantilever tunneling machine for coal mines with safety protection according to claim 1, characterized in that: The buffer assembly (7) includes a mounting shell (701) fixedly connected to the upper surface of the base plate (1). A cover plate (702) is fixedly connected to the upper surface of the mounting shell (701) by screws. A sliding groove (703) is opened through the upper surface of the cover plate (702). A second connecting seat (704) is slidably connected to the inner wall of the sliding groove (703).

5. The cantilever tunneling machine for coal mines with safety protection according to claim 4, characterized in that: The outer wall of the second connecting seat (704) is fixedly connected to a second mounting shaft, and the end of the connecting rod (11) away from the first mounting shaft is rotatably connected to the outer wall of the second mounting shaft. The end of the second mounting shaft away from the second connecting seat (704) is fixedly connected to a second limiting block.

6. The cantilever tunneling machine for coal mines with safety protection according to claim 4, characterized in that: The inner wall of the mounting housing (701) is provided with a guide groove (708), and a guide block (706) is slidably connected to the inner wall of the guide groove (708). A slide block (705) is fixedly connected to the side of the guide block (706) away from the guide groove (708). The upper surface of the slide block (705) is fixedly connected to the lower surface of the second connecting seat (704).

7. The cantilever tunneling machine for coal mines with safety protection according to claim 4, characterized in that: A slide rod (707) is fixedly connected to the inner wall of the mounting housing (701). The outer wall of the slide rod (707) is slidably connected to the inner wall of the slide block (705). A second spring (709) is sleeved on the outer wall of the slide rod (707). One end of the second spring (709) abuts against the inner wall of the mounting housing (701), and the other end of the second spring (709) abuts against the outer surface of the slide block (705).

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