CN210613818U

CN210613818U - Underground secondary blasting device

Info

Publication number: CN210613818U
Application number: CN201921391166.5U
Authority: CN
Inventors: 何小明; 许明; 邵为民
Original assignee: Xinjiang Daming Mining Group Co ltd
Current assignee: Xinjiang Daming Mining Group Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-05-26
Anticipated expiration: 2029-08-26

Abstract

The application relates to a secondary blasting device, in particular to an underground secondary blasting device; the device comprises a conveyor belt, a bottom support, a punching machine and an independent drilling machine; the tail end of the conveyor belt is connected to the bottom support; the bottom support comprises a concave arch surface and at least three claws formed by extending upwards along the edge of the arch surface; the bottom of the punch hammer of the punch press capable of repeatedly pressing downwards is fixedly provided with a bursting head. Due to the implementation of the technical scheme, the ore with the volume which does not reach the standard after primary blasting is conveyed to the bottom support through the conveyor belt, the top of the ore is drilled manually through the drilling machine, the drilling hole is located right below the blasting head, the blasting head connected with the impact hammer impacts the drilling hole, and the ore is split into a plurality of small blocks under the impact action of the triangular cone; the method has the advantages that chemical explosives are not needed, the blasting sound is small, the amount of underground smoke is small after blasting, and the working environment of underground operators is improved to a certain extent; and explosive professionals are not needed, the cost is reduced, and the danger and the difficulty of secondary blasting are reduced.

Description

Underground secondary blasting device

Technical Field

The application relates to a secondary blasting device, especially relates to a secondary blasting ware in pit.

Background

The secondary blasting is a process of secondary treatment of large rocks or minerals which do not meet transportation requirements or meet specific specifications in certain fields, and plays an extremely important role and significance in the mining industry in China.

Currently, the mining and secondary blasting means in China mostly depend on chemical explosives; the method has high requirement on professional level of personnel, is not beneficial to large-scale use, has huge blasting sound, has long duration of underground smoke dust after blasting, has high danger at the blasting moment, and causes potential safety hazards due to factors such as blocked sight, more dust particles in air and the like in the follow-up blasting process. Although the mining industry establishes safety awareness all the time and makes self precaution work for related personnel to popularize safety knowledge, accidents still often occur. Therefore, the current secondary blasting has high cost, high danger, difficulty and danger.

Disclosure of Invention

The utility model aims to provide a reduce cost reduces danger and the secondary blasting ware in pit of the degree of difficulty.

The application is realized as follows: the underground secondary blasting device comprises a conveyor belt, a bottom support, a punching machine and an independent drilling machine; the tail end of the conveyor belt is connected to the bottom support; the bottom support comprises a concave arch surface and at least three claws formed by extending upwards along the edge of the arch surface; the bottom of a punch hammer of the punching machine capable of repeatedly pressing downwards is fixedly provided with a blasting head, the blasting head is in a triangular pyramid shape with the downward head, and the blasting head is arranged right above the arch surface.

Further, the drilling depth of the drilling machine is not less than 50 mm; the size of the head of the blasting head is smaller than that of the drill hole; the bottom of the blasting head is larger than the drill hole.

Furthermore, an auxiliary splitting head is arranged at the center of the upper end face of the bottom support and is in a triangular pyramid shape with an upward head.

Furthermore, the number of the clamping jaws is three to five, and the clamping jaws are uniformly distributed along the center of the bottom support in a circumferential manner.

Furthermore, the inner side of the clamping jaw is provided with a cutting edge.

Further, the punching machine comprises a frame, a guide rail, a gravity block, a pneumatic box and a lifter; the air pressure box with an opening at the lower end is fixedly arranged in the frame and communicated with an air pump; the bottom end face of the air pressure box is fixedly provided with a guide rail, the upper end face of the air pressure box is fixedly provided with a lifter, and the gravity block is arranged in the guide rail in a vertically sliding manner through the lifter; when the gravity block moves to the highest point, the gravity block and the lower end opening of the air pressure box form sealing; the bottom of the gravity block is fixed with a hammer.

Furthermore, a sealing ring is arranged at the opening at the lower end of the air pressure box.

Due to the implementation of the technical scheme, the ore with the volume which does not reach the standard after primary blasting is conveyed to the bottom support through the conveyor belt, the top of the ore is drilled manually through the drilling machine, the drilling hole is located right below the blasting head, the blasting head connected with the impact hammer impacts the drilling hole, and the ore is split into a plurality of small blocks under the impact action of the triangular cone; the method has the advantages that chemical explosives are not needed, the blasting sound is small, the amount of underground smoke is small after blasting, and the working environment of underground operators is improved to a certain extent; and explosive professionals are not needed, the cost is reduced, and the danger and the difficulty of secondary blasting are reduced.

Drawings

The specific structure of the application is given by the following figures and examples:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present application;

fig. 2 is a schematic top view of the shoe of fig. 1.

Legend: 1. the device comprises an arch face, 2 jaws, 3 punches, 4 blasting heads, 5 cutting edges, 6 guide rails, 7 gravity blocks, 8 pneumatic boxes, 9 elevators, 10 openings, 11 sealing rings, 12 air pumps and 13 auxiliary splitting heads.

Detailed Description

The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.

Example, as shown in fig. 1-2, a downhole secondary blaster comprises a conveyor belt, a shoe, a punch and a separate drill; the tail end of the conveyor belt is connected to the bottom support; the bottom support comprises a concave arch surface 1 and at least three claws 2 formed by extending upwards along the edge of the arch surface 1; the bottom of the punch hammer 3 of the punching machine capable of repeatedly pressing downwards is fixedly provided with a blasting head 4, the blasting head 4 is in a triangular pyramid shape with the downward head, and the blasting head 4 is arranged right above the arch surface 1.

After the primary blasting, putting ores needing the secondary blasting on a conveyer belt (not shown in the figure), and conveying the ores to the bottom support position along with the conveyer belt; the ore is placed on the bottom support, and the position and the direction of the ore are adjusted, so that the ore is stably seated on the bottom support. The worker drills a hole in the ore at the top of the ore with a drill rig, the drilling location being directly below the blasting head 4. The punching machine applies pressure downwards, the blasting head 4 connected with the bottom of the impact hammer 3 impacts the drill hole, and under the impact action of the triangular cone, the ore is split into a plurality of small blocks. Collet 2 that the border upwards extends is convenient for on the one hand to the ore formation fixed, and on the other hand is instantaneous at the punching press, and the bottom side can be followed to the jack catch 2 and to the supplementary cutting of ore formation, and the ore splitting of being convenient for is the fritter.

The application does not need to adopt chemical explosives and explosive professionals, and is beneficial to large-scale popularization and application. According to the method, through physical blasting, the blasting sound is small, the underground smoke is less after blasting, and the working environment of underground operators is improved to a certain extent; the cost can be reduced, and the danger and the difficulty of secondary blasting can be reduced.

As shown in fig. 1 to 2, the drilling depth of the drilling machine is not less than 50 mm; the size of the head part of the blasting head 4 is smaller than the size of a drill hole; the size of the bottom of the blasting head 4 is larger than the size of the drill hole.

The drilling depth is convenient for splitting the ore under the impact action of the blasting head 4.

As shown in fig. 1 to 2, the auxiliary splitting head 13 is arranged at the center of the upper end face of the collet, and the auxiliary splitting head 13 is in a triangular pyramid shape with an upward head. Therefore, the ore can be stressed from the top and the bottom, and the upper pressure and the lower pressure form splitting force under the action of the triangular-cone-shaped blasting head 4 and the auxiliary splitting head 13, so that the ore can be split more easily and quickly.

As shown in fig. 1 to 2, the number of the claws 2 is three to five, and the claws 2 are evenly distributed along the center of the bottom support in a circumference way.

As shown in fig. 1 to 2, the jaws 2 are provided with cutting edges 5 on the inside.

As shown in fig. 1 to 2, the press includes a frame, a guide rail 6, a gravity block 7, a pneumatic tank 8, and a lifter 9; an air pressure box 8 with an opening 10 at the lower end is fixedly arranged in the frame, and the air pressure box 8 is communicated with an air pump 12; the bottom end face of the air pressure box 8 is fixedly provided with a guide rail 6, the upper end face of the air pressure box 8 is fixedly provided with a lifter 9, and the gravity block 7 is arranged in the guide rail 6 in a vertically sliding manner through the lifter 9; when the gravity block 7 moves to the highest point, the gravity block 7 and the lower end opening 10 of the air pressure box 8 form a seal; the bottom of the gravity block 7 is fixed with a hammer 3.

When the pneumatic lifting device works, the lifting machine 9 lifts the gravity block 7 to lift and form sealing with the lower end opening 10 of the pneumatic box 8, the air pump 12 is used for pressurizing the interior of the pneumatic box 8, and the pressurization is stopped after a certain pressure is reached. The lifting machine 9 applies lifting force, and the blasting head 4 below the impact hammer 3 can impact the ore below under the action of the gravity block 7 and air pressure to split the ore. The hoist 9 is a well-known common technique, and pulls the weight block 7 by a wire rope or a rack and pinion (described in application No. 2007100144648).

The frame structure is not shown in the figure, and the purpose of the frame is to fixedly mount the parts of the gravity block 7, the air pressure box 8 and the hoisting machine 9 so that they are suspended above the bottom support.

As shown in fig. 1, a sealing ring 11 is provided at a lower opening 10 of the pneumatic tank 8.

The above technical features constitute the best embodiment of the present application, which has strong adaptability and best implementation effect, and unnecessary technical features can be added or subtracted according to actual needs to meet the needs of different situations.

Claims

1. A secondary blasting ware in pit which characterized in that: the device comprises a conveyor belt, a bottom support, a punching machine and an independent drilling machine; the tail end of the conveyor belt is connected to the bottom support; the bottom support comprises a concave arch surface and at least three claws formed by extending upwards along the edge of the arch surface; the bottom of a punch hammer of the punching machine capable of repeatedly pressing downwards is fixedly provided with a blasting head, the blasting head is in a triangular pyramid shape with the downward head, and the blasting head is arranged right above the arch surface.

2. The downhole secondary blaster of claim 1 further comprising: the drilling depth of the drilling machine is not less than 50 mm; the size of the head of the blasting head is smaller than that of the drill hole; the bottom of the blasting head is larger than the drill hole.

3. The downhole secondary blaster of claim 1 or 2 further comprising: the auxiliary splitting head is arranged at the center of the upper end face of the bottom support and is in a triangular pyramid shape with the upward head.

4. The downhole secondary blaster of claim 1 or 2 further comprising: the number of the clamping jaws is three to five, and the clamping jaws are uniformly distributed along the center of the bottom support in a circumferential manner.

5. The downhole secondary blaster of claim 3 further comprising: the number of the clamping jaws is three to five, and the clamping jaws are uniformly distributed along the center of the bottom support in a circumferential manner.

6. The downhole secondary blaster of claim 4 further comprising: the inner side of the clamping jaw is provided with a cutting edge.

7. The downhole secondary blaster of claim 1 or 2 further comprising: the punching machine comprises a frame, a guide rail, a gravity block, a pneumatic box and a lifter; the air pressure box with an opening at the lower end is fixedly arranged in the frame and communicated with an air pump; the bottom end face of the air pressure box is fixedly provided with a guide rail, the upper end face of the air pressure box is fixedly provided with a lifter, and the gravity block is arranged in the guide rail in a vertically sliding manner through the lifter; when the gravity block moves to the highest point, the gravity block and the lower end opening of the air pressure box form sealing; the bottom of the gravity block is fixed with a hammer.

8. The downhole secondary blaster of claim 6 further comprising: the punching machine comprises a frame, a guide rail, a gravity block, a pneumatic box and a lifter; the air pressure box with an opening at the lower end is fixedly arranged in the frame and communicated with an air pump; the bottom end face of the air pressure box is fixedly provided with a guide rail, the upper end face of the air pressure box is fixedly provided with a lifter, and the gravity block is arranged in the guide rail in a vertically sliding manner through the lifter; when the gravity block moves to the highest point, the gravity block and the lower end opening of the air pressure box form sealing; the bottom of the gravity block is fixed with a hammer.

9. The downhole secondary blaster of claim 7 further comprising: the lower end opening of the air pressure box is provided with a sealing ring.

10. The downhole secondary blaster of claim 8 wherein: the lower end opening of the air pressure box is provided with a sealing ring.