Hole reaming device for coal bunker in shaft bottom

Abstract

The utility model discloses a well bottom coal bunker gangue hole reaming equipment belongs to reaming device technical field, including long drill rod and thick steel sheet, the upper surface fixed connection of thick steel sheet has cutting drill bit, the surface of long drill rod is fixedly connected with thick steel sheet, the position of long drill rod is located the axle center of thick steel plate, and the one end of long drill rod is provided with the screw hole, and the inner wall of screw hole is provided with wear -resisting plating, and the end surface of long drill rod is provided with cooperation gasket, and the hole of cooperation gasket is adapted with screw hole, and the end surface fixedly connected with the connecting piece of long drill rod is away from screw hole. The utility model discloses, cutting drill bit adopts the drill bit of old and useless comprehensive excavator, can utilize the field material more effectively, ZDY6500LPS type coal mine caterpillar band type full hydraulic tunnel drill machine is nimble, and it is convenient to fix, and the field drill machine worker is simple and convenient to operate, and it is convenient to transport below, compares the leasing anti -well drilling equipment, and a lot of processes are saved, and the material cost is lower, and the manpower is less.

Description

Technical Field

[0001] This utility model relates to hole enlargement equipment, and in particular to hole enlargement equipment for coal bunker chutes at the bottom of mines, belonging to the technical field of hole enlargement devices. Background Technology

[0002] In coal bunker construction, the ZDY6500LPS type tracked fully hydraulic tunnel drilling rig for coal mines uses a drill bit to enlarge the hole. Enlarging refers to a semi-finishing process that uses an enlarging drill or special tools to enlarge the hole diameter, correct axial deviation, and improve dimensional accuracy and surface quality on the basis of an existing hole (such as the initial hole formed by drilling).

[0003] However, current hole-reaming construction requires renting or purchasing separate hole-reaming equipment, which is costly and results in low resource utilization. Utility Model Content

[0004] The main purpose of this utility model is to solve the problems of high cost and low resource utilization caused by the need to rent or purchase separate hole-expanding equipment, and to provide hole-expanding equipment for coal bunker chutes at the bottom of the mine.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A hole enlargement device for a coal chute at the bottom of a mine includes a long drill rod and a thick steel plate. A cutting drill bit is fixedly connected to the upper surface of the thick steel plate, and the surface of the long drill rod is fixedly connected to the thick steel plate. The long drill rod is located at the axis of the thick steel plate.

[0007] Preferably, one end of the long drill rod is provided with a screw hole, and the inner wall of the screw hole is provided with a wear-resistant coating.

[0008] Preferably, the end face of the long drill rod is provided with a mating washer, and the hole of the mating washer is adapted to the screw hole.

[0009] Preferably, the long drill rod has a connector fixedly connected to its end face away from the screw hole, and the position of the connector is adapted to the screw hole.

[0010] Preferably, a first support frame is fixedly connected to the lower surface of the thick steel plate, and the side wall of the long drill rod is fixedly connected to the first support frame.

[0011] Preferably, a second support frame is fixedly connected to the lower surface of the thick steel plate, and the side wall of the long drill rod is fixedly connected to the second support frame.

[0012] Preferably, a first connecting rib is fixedly connected to the surface of the first support frame, and the surface of the second support frame is fixedly connected to the first connecting rib.

[0013] Preferably, a second connecting rib is fixedly connected to the surface of the second support frame, the lower surface of the thick steel plate is fixedly connected to the second connecting rib, and the side wall of the long drill rod is fixedly connected to the second connecting rib.

[0014] The beneficial technical effects of this utility model are as follows: The bottom coal bunker chute hole enlargement equipment of this utility model uses a scrap roadheader drill bit for cutting, which can make more effective use of on-site materials. The ZDY6500LPS type tracked full hydraulic tunnel drilling rig for coal mines is flexible to move and easy to fix. The on-site drilling operator can operate it simply and conveniently. It is also convenient to transport it to the bottom. Compared with renting uphole drilling equipment, it saves a lot of processes, and the material cost is lower and the manpower required is less. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view according to a preferred embodiment of the present invention;

[0016] Figure 2 According to a preferred embodiment of the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0017] Figure 3 This is a top view according to a preferred embodiment of the present invention.

[0018] In the diagram: 1. Long drill rod; 2. Thick steel plate; 3. Cutting drill bit; 4. Screw hole; 5. Wear-resistant coating; 6. Matching gasket; 7. Connector; 8. First support frame; 9. Second support frame; 10. First connecting rib; 11. Second connecting rib. Detailed Implementation

[0019] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0020] like Figures 1-3 As shown, the bottom coal bunker chute reaming device provided in this embodiment includes a long drill rod 1 and a thick steel plate 2. The diameter of the thick steel plate 2 is 1000mm, and the reaming diameter of this application is 1000mm. A cutting drill bit 3 is fixedly connected to the upper surface of the thick steel plate 2. The surface of the long drill rod 1 is fixedly connected to the thick steel plate 2. The position of the long drill rod 1 is located at the axis of the thick steel plate 2. The cutting drill bit 3 is a scrap roadheader drill bit. The scrap roadheader drill bit is reused, making full use of existing materials and making use of residual heat. The long drill rod 1 is driven by a ZDY6500LPS type tracked full hydraulic tunnel drilling rig for coal mines.

[0021] like Figures 1-3As shown, a screw hole 4 is provided at one end of the long drill rod 1. The inner wall of the screw hole 4 is provided with a wear-resistant coating 5, which improves the wear resistance of the inner wall of the screw hole 4. A mating washer 6 is provided on the end face of the long drill rod 1. The hole of the mating washer 6 is adapted to the screw hole 4. A connector 7 is fixedly connected to the end face of the long drill rod 1 away from the screw hole 4. The surface of the connector 7 is provided with external threads. The position of the connector 7 is adapted to the screw hole 4. When the long drill rod 1 is connected, the connectors 7 on the other drill rods are inserted into the screw holes 4. When the other drill rods are connected to the long drill rod 1, the mating washer 6 undergoes elastic deformation, making it less likely for the screw hole 4 to slip when it mates with the connector 7.

[0022] like Figures 1-3 As shown, a first support frame 8 is fixedly connected to the lower surface of the thick steel plate 2, and the side wall of the long drill rod 1 is fixedly connected to the first support frame 8. A second support frame 9 is fixedly connected to the lower surface of the thick steel plate 2, and the side wall of the long drill rod 1 is fixedly connected to the second support frame 9. A first connecting rib 10 is fixedly connected to the surface of the first support frame 8, and the surface of the second support frame 9 is fixedly connected to the first connecting rib 10. A second connecting rib 11 is fixedly connected to the surface of the second support frame 9, and the lower surface of the thick steel plate 2 is fixedly connected to the second connecting rib 11. The side wall of the long drill rod 1 is fixedly connected to the second connecting rib 11. The thick steel plate 2 is reinforced by the first support frame 8 and the second support frame 9, and the first support frame 8 and the second support frame 9 are connected together by the second connecting rib 11, improving the overall integrity of the first support frame 8 and the second support frame 9. The second connecting rib 11 reinforces the second support frame 9.

[0023] In this embodiment, as Figures 1-3 As shown in the figure, the working process of the shaft bottom coal bunker chute enlargement device provided in this embodiment is as follows:

[0024] The ZDY6500LPS type tracked fully hydraulic tunnel drilling rig for coal mines was driven to the center of the coal bunker at the top of the bottom of the shaft. The drilling rig was fixed and the borehole was aligned. First, a φ120mm drill bit was used to drill down 30m to the coal feeder chamber below. The drilling rig was then stopped, and the φ120mm drill bit was replaced with a φ300mm raise drill bit. The drill bit was then lifted up to the top of the coal bunker for the first time, and then the drill rod was lowered into the coal feeder chamber. The drill bit was replaced with a φ700mm self-made raise drill bit for the second time. After the construction was completed, the drill bit was replaced with a φ1000mm self-made raise drill bit for the third time until the drilling was completed. The raise drill hole was completed and the conditions for the use of the chute during the excavation of the bottom coal bunker were met.

[0025] In summary, in this embodiment, the ZDY6500LPS type tracked fully hydraulic tunnel drilling rig for coal mines, which is equipped with a bottom coal bunker chute enlargement device, is flexible in movement and convenient for underground transportation. Compared with renting uphole drilling equipment, it saves a lot of processes, and the material cost and manpower are lower.

[0026] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A hole enlargement device for bottom coal bunker chute, characterized in that, The device includes a long drill rod (1) and a thick steel plate (2). A cutting drill bit (3) is fixedly connected to the upper surface of the thick steel plate (2). The surface of the long drill rod (1) is fixedly connected to the thick steel plate (2). The long drill rod (1) is located at the axis of the thick steel plate (2). A first support frame (8) is fixedly connected to the lower surface of the thick steel plate (2). The side wall of the long drill rod (1) is fixedly connected to the first support frame (8). A second support frame (9) is fixedly connected to the lower surface of the thick steel plate (2). The side wall of the long drill rod (1) is fixedly connected to the second support frame (9).

2. The hole enlargement device for the bottom coal bunker chute according to claim 1, characterized in that, One end of the long drill rod (1) is provided with a screw hole (4), and the inner wall of the screw hole (4) is provided with a wear-resistant coating (5).

3. The hole enlargement device for the bottom coal bunker chute according to claim 2, characterized in that, The end face of the long drill rod (1) is provided with a mating shim (6), and the hole of the mating shim (6) is adapted to the screw hole (4).

4. The hole enlargement device for the bottom coal bunker chute according to claim 3, characterized in that, The long drill rod (1) has a connector (7) fixedly connected to its end face away from the screw hole (4), and the position of the connector (7) is adapted to the screw hole (4).

5. The hole enlargement device for the bottom coal bunker chute according to claim 1, characterized in that, The surface of the first support frame (8) is fixedly connected to the first connecting rib (10), and the surface of the second support frame (9) is fixedly connected to the first connecting rib (10).

6. The hole enlargement device for the bottom coal bunker chute according to claim 5, characterized in that, The surface of the second support frame (9) is fixedly connected with a second connecting rib (11), the lower surface of the thick steel plate (2) is fixedly connected with the second connecting rib (11), and the side wall of the long drill rod (1) is fixedly connected with the second connecting rib (11).

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