Explosive charging structure for open blasting

Abstract

The utility model relates to an open blasting charge structure which comprises a U-shaped supporting frame, a moving shell with an opening in the bottom is arranged in the supporting frame, an electric push rod is fixedly connected to the inner top wall of the supporting frame, and a moving plate is arranged on the upper half portion in the moving shell. And the output end of the electric push rod penetrates through the top wall of the moving shell and is fixedly connected with the top of the moving plate, a feeding part is arranged above the moving shell, and a first limiting part is arranged on the outer side of the moving shell. The utility model relates to the technical field of mine blasting. After the supporting frame moves to a proper position, the electric push rod works to drive the lower half part of the moving shell to be inserted into a blast hole, explosive is added into the blast hole, then the electric push rod continues to work to drive the moving plate to move to be coplanar with the bottom face of the moving shell, and then the moving plate and the moving shell synchronously move downwards to compact the explosive. And the position of the device does not need to be moved after the explosive is added, so that the device is convenient for workers to use, and the explosive filling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine blasting, in particular to an open-pit blasting charge structure. Background Art

[0002] Blasting is a technology that uses the compression, loosening, destruction, throwing and killing effects generated by the explosion of explosives in air, water, soil-rock media or objects to achieve the expected purpose. When a cartridge or charge explodes in soil-rock media or structures, it causes phenomena such as compression, deformation, destruction, loosening and throwing of the soil-rock media or structures, and it is the main method used in mine exploitation.

[0003] For example, the Chinese patent with the publication number CN219454862U discloses an open-pit mine exploitation blasting charge structure, which includes a blast hole alignment component. The blast hole alignment component includes a pressing plate, a material guiding pipe is fixedly penetrated through the middle of the pressing plate, a dust flowmeter is fixedly installed above the material guiding pipe, and a docking hopper is fixedly installed above the dust flowmeter; a feeding component, the feeding component includes a connecting plate, hydraulic telescopic rods are fixedly connected to the four corners of the bottom of the connecting plate, universal wheels are fixedly connected below the hydraulic telescopic rods, a medicine storage barrel is arranged inside the connecting plate, an electromagnetic valve is fixedly connected to the bottom of the medicine storage barrel, the electromagnetic valve is electrically connected to the dust flowmeter, and a medicine inlet is opened above the medicine storage barrel; a compaction component, the compaction component is arranged through one side of the connecting plate. The utility model can achieve that the dust does not leak during the charging process, avoid the explosion dust of the explosive being inhaled by people and endangering physical health, and the explosion dust of the explosive floating in the air causing potential safety hazards. And after charging, the explosive in the blast hole can be compacted to make the explosive filling tight and make the blasting effect of the explosive better.

[0004] After adding the explosive, this patent still needs to be moved as a whole so that the compaction plate is located directly above the blast hole. Therefore, this patent is not convenient for the staff to use and also reduces the explosive loading efficiency. Content of the Utility Model

[0005] In view of the deficiencies of the existing technology, the purpose of the utility model is to provide an open-pit blasting charge structure to solve the technical problems mentioned in the above background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] An open-pit blasting charge structure includes a U-shaped support frame. A moving shell with an open bottom is arranged inside the support frame. A telescopic electric push rod is fixedly connected to the inner top wall of the support frame. A moving plate is arranged in the upper half of the moving shell. The output end of the electric push rod passes through the top wall of the moving shell and is fixedly connected to the top of the moving plate. A feeding part is arranged above the moving shell, and a first limiting part is arranged outside the moving shell.

[0008] The internal space of the moving shell can be divided into an upper cavity, a middle cavity and a lower cavity from top to bottom. The inner circumference of the lower cavity is coplanar with the outer circumference of the moving plate. The inner diameter of the upper cavity is larger than the inner diameter of the lower cavity. The inner diameter of the middle cavity is gradually reduced from top to bottom. A plurality of first springs are fixedly connected between the top of the moving plate and the inner top wall of the moving shell, and a second limiting portion is provided on the outer circumference of the moving plate.

[0009] Furthermore, the second limiting portion includes two limiting grooves opened on the inner wall of the upper cavity, and two limiting rods are fixedly connected to the top of the moving plate. The upper half of the limiting rods is horizontally arranged, and when the bottom surface of the moving plate is coplanar with the bottom surface of the moving shell, the bottom surface of the horizontal section of the limiting rod is in contact with the bottom wall of the corresponding limiting groove.

[0010] Furthermore, the first limiting portion includes two side plates fixedly connected to the upper half of the side wall of the moving shell, a second spring is fixedly connected to the top of the side plate, an escape opening is opened at the top of the support frame corresponding to the second spring, the second spring passes through the corresponding escape opening, and the top of the second spring is fixedly connected to the limiting plate, and a gap is left between the limiting plate and the top surface of the support frame.

[0011] Furthermore, the feeding part includes a feeding hopper located above the support frame, a discharge pipe is fixedly penetrated at the bottom of the feeding hopper, three vertical pipes are fixedly connected to the bottom of the discharge pipe, the vertical pipes are fixedly passed through the top wall of the support frame, and a plurality of sliding tubes are fixedly penetrated at the upper half of the moving shell, and the upper half of the sliding tubes are slidably connected to the corresponding vertical pipes.

[0012] Furthermore, the top surface of the sports board is gradually inclined downward from the center to the periphery.

[0013] Furthermore, an electric gate valve is fixedly sleeved on the outer peripheral surface of the discharge pipe.

[0014] In summary, the utility model includes at least one of the following beneficial technical effects:

[0015] 1. This open-air blasting charging structure, after the support frame is moved to a suitable position, the electric push rod works to drive the lower half of the moving shell to be inserted into the blast hole, and explosives are added to the blast hole. Then the electric push rod continues to work to drive the moving plate to move to the same plane as the bottom surface of the moving shell, and then the moving plate and the moving shell move downward synchronously to compact the explosives. It is no longer necessary to move the position of the device after adding the explosives, which is convenient for the use of the staff and improves the efficiency of explosives loading;

[0016] 2. The open-air blasting charging structure controls the amount of explosives added to the blasthole by the opening and closing time of the electric gate valve. Therefore, a large amount of explosives can be added to the charging hopper at one time, without the need to add explosives to the charging hopper separately before each charging, which further facilitates the use of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional view of an open-pit blasting charging structure of this embodiment;

[0019] Figure 2 is a front sectional view of the moving shell in an open-pit blasting charging structure of this embodiment;

[0020] Figure 3 is a schematic diagram of the internal shape of the moving shell in an open-pit blasting charging structure of this embodiment.

[0021] In the figure, 1, support frame; 2, moving shell; 21, upper cavity; 22, middle cavity; 23, lower cavity; 3, electric push rod; 4, moving plate; 5, feeding part; 51, feeding hopper; 52, discharge pipe; 53, vertical pipe; 54, sliding pipe; 6, first limiting part; 61, side plate; 62, second spring; 63, avoidance opening; 64, limiting plate; 7, first spring; 8, second limiting part; 81, limiting groove; 82, limiting rod; 9, electric gate valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will further describe the present invention in detail with reference to the drawings.

[0023] Embodiment: Referring to Figures 1 to 3 , an open-pit blasting charging structure disclosed by the present invention includes a U-shaped support frame 1. A moving shell 2 with an open bottom is arranged inside the support frame 1. An electric push rod 3 is fixedly connected to the inner top wall of the support frame 1. A moving plate 4 is arranged in the upper half of the moving shell 2. The output end of the electric push rod 3 passes through the top wall of the moving shell 2 and is fixedly connected to the top of the moving plate 4. A feeding part 5 is arranged above the moving shell 2. A first limiting part 6 is arranged outside the moving shell 2;

[0024] The internal space of the moving shell 2 can be sequentially divided into an upper cavity 21, a middle cavity 22 and a lower cavity 23 from top to bottom. The inner peripheral surface of the lower cavity 23 is coplanar with the outer peripheral surface of the moving plate 4. The inner diameter of the upper cavity 21 is larger than that of the lower cavity 23. The inner diameter of the middle cavity 22 is gradually decreased from top to bottom. A plurality of first springs 7 are fixedly connected between the top of the moving plate 4 and the inner top wall of the moving shell 2. A second limiting part 8 is arranged on the outer peripheral side of the moving plate 4.

[0025] In this embodiment, in the initial state, the bottom surface of the moving shell 2 is located above the bottom surface of the support frame 1. When the support frame 1 is placed on the ground, the moving shell 2 does not contact the ground. The output end of the electric push rod 3 slides through the top wall of the moving shell 2.

[0026] In the initial state, the moving plate 4 is located in the upper cavity 21, so there is a gap between the outer wall of the moving plate 4 and the inner wall of the upper cavity 21, and the explosives in the upper cavity 21 can fall from between the moving plate 4 and the inner wall of the upper cavity 21, pass through the middle cavity 22 and the lower cavity 23, and finally fall into the blast hole.

[0027] In a further preferred embodiment of the present invention, Figure 2 As shown, the second limiting portion 8 includes two limiting grooves 81 opened on the inner wall of the upper cavity 21, and two limiting rods 82 are fixedly connected to the top of the moving plate 4. The upper half of the limiting rods 82 is horizontally arranged, and when the bottom surface of the moving plate 4 is coplanar with the bottom surface of the moving shell 2, the bottom surface of the horizontal section of the limiting rod 82 is in contact with the inner bottom wall of the corresponding limiting groove 81.

[0028] In this embodiment, the limit groove 81 is used to limit the moving plate 4 so that the moving plate 4 can only move vertically, and after the moving plate 4 moves to be coplanar with the bottom surface of the moving shell 2, the bottom surface of the horizontal section of the limit rod 82 fits with the inner bottom wall of the corresponding limit groove 81, so the moving plate 4 can no longer move downward relative to the moving shell 2.

[0029] In a further preferred embodiment of the present invention, Figure 1 As shown, the first limiting portion 6 includes two side plates 61 fixedly connected to the upper half of the side wall of the moving shell 2, and the top of the side plate 61 is fixedly connected to the second spring 62. The top of the support frame 1 is provided with an avoidance opening 63 corresponding to the second spring 62. The second spring 62 passes through the corresponding avoidance opening 63, and the top of the second spring 62 is fixedly connected to a limiting plate 64, and a gap is left between the limiting plate 64 and the top surface of the support frame 1.

[0030] In this embodiment, after the support frame 1 is placed (the blast hole is located directly below the moving shell 2), the electric push rod 3 is started, and the electric push rod 3 drives the moving plate 4 to move downward, and the moving plate 4 drives the moving shell 2 to move downward through the first spring 7, and the moving shell 2 drives the side plate 61, the second spring 62 and the limit plate 64 to move downward. Until the bottom surface of the limit plate 64 fits the top surface of the support frame 1, at this time, the lower half of the moving shell 2 is inserted into the blast hole.

[0031] Explosives are added into the moving shell 2 through the charging portion 5, and the explosives pass between the moving plate 4 and the inner wall of the upper cavity 21, and then pass through the middle cavity 22 and the lower cavity 23, and finally fall into the blast hole.

[0032] After the explosive is added, the electric push rod 3 continues to extend. Since the limit plate 64 cannot pass through the corresponding avoidance opening 63, the electric push rod 3 continues to work, driving the moving plate 4 to move downward, the first spring 7 extends, and the moving shell 2 no longer moves downward. The elastic force of the second spring 62 is much greater than the elastic force of the first spring 7. Therefore, after the limit plate 64 is attached to the top surface of the support frame 1, the electric push rod 3 continues to extend, which only drives the first spring 7 to extend, and the extension of the second spring 62 can be ignored.

[0033] When the moving plate 4 moves downward to be coplanar with the bottom surface of the moving shell 2, the bottom surface of the horizontal section of the limiting rod 82 fits with the inner bottom wall of the corresponding limiting groove 81, so the moving plate 4 can no longer move downward relative to the moving shell 2, and the electric push rod 3 continues to extend, overcoming the elastic force of the second spring 62, driving the moving plate 4 and the moving shell 2 to move downward synchronously, and the bottom surfaces of the moving shell 2 and the moving plate 4 jointly contact the explosives in the blast hole to compact the explosives.

[0034] Finally, the electric push rod 3 contracts, and the moving shell 2 and the moving plate 4 return to their initial positions.

[0035] In a further preferred embodiment of the present invention, Figure 1 As shown, the feeding part 5 includes a feeding hopper 51 located above the support frame 1, a discharge pipe 52 is fixedly penetrated at the bottom of the feeding hopper 51, three vertical pipes 53 are fixedly connected to the bottom of the discharge pipe 52, the vertical pipes 53 are fixedly passed through the top wall of the support frame 1, and a plurality of sliding pipes 54 are fixedly penetrated at the upper half of the moving shell 2, and the upper half of the sliding pipes 54 are slidably connected to the corresponding vertical pipes 53.

[0036] In this embodiment, after the lower half of the moving shell 2 is inserted into the blast hole, a proper amount of explosive is added into the charging hopper 51, and the explosive enters the moving shell 2 through the discharge pipe 52, the vertical pipe 53 and the sliding pipe 54. The three vertical pipes 53 are arranged in a uniform annular arrangement, so that the explosive falls into different positions in the moving shell 2, thereby preventing the explosive from being unevenly distributed after falling into the blast hole.

[0037] In a further preferred embodiment of the present invention, Figure 2 As shown, the top surface of the sports board 4 is gradually inclined downward from the center to the periphery.

[0038] In this embodiment, the explosives that fall onto the top of the moving plate 4 can slide down along the top of the moving plate 4, preventing part of the explosives from remaining on the top of the moving plate 4 without fully entering the blast hole.

[0039] In a further preferred embodiment of the present invention, Figure 1 As shown, an electric gate valve 9 is fixedly sleeved on the outer peripheral surface of the discharge pipe 52 .

[0040] In this embodiment, the staff can control the amount of explosives entering the moving shell 2 by opening the electric gate valve 9 for a certain period of time, and can add a large amount of explosives into the feeding hopper 51 at one time, which is convenient for the staff to use.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An open-pit blasting charge structure, comprising a U-shaped support frame (1), characterized in that: A moving shell (2) with an opening at the bottom is arranged inside the support frame (1); an electric push rod (3) is fixedly connected to the top wall inside the support frame (1); a moving plate (4) is arranged on the upper half inside the moving shell (2); an output end of the electric push rod (3) passes through the top wall of the moving shell (2) and is fixedly connected to the top of the moving plate (4); a feeding portion (5) is arranged above the moving shell (2); and a first limiting portion (6) is arranged on the outer side of the moving shell (2); The internal space of the moving shell (2) can be divided into an upper chamber (21), a middle chamber (22) and a lower chamber (23) from top to bottom. The inner circumference of the lower chamber (23) is coplanar with the outer circumference of the moving plate (4). The inner diameter of the upper chamber (21) is larger than the inner diameter of the lower chamber (23). The inner diameter of the middle chamber (22) is gradually reduced from top to bottom. A plurality of first springs (7) are fixedly connected between the top of the moving plate (4) and the inner top wall of the moving shell (2). A second limiting portion (8) is provided on the outer circumference of the moving plate (4).

2. The open-air blasting charge structure according to claim 1, characterized in that: The second limiting portion (8) comprises two limiting grooves (81) formed on the inner wall of the upper cavity (21); the top of the moving plate (4) is fixedly connected to two limiting rods (82); the upper half of the limiting rods (82) is arranged horizontally, and when the bottom surface of the moving plate (4) is coplanar with the bottom surface of the moving shell (2), the bottom surface of the horizontal section of the limiting rod (82) fits with the inner bottom wall of the corresponding limiting groove (81).

3. The open-air blasting charge structure according to claim 2, characterized in that: The first limiting portion (6) comprises two side plates (61) fixedly connected to the upper half of the side wall of the moving shell (2); a second spring (62) is fixedly connected to the top of the side plate (61); a clearance opening (63) is provided at the top of the support frame (1) corresponding to the second spring (62); the second spring (62) passes through the corresponding clearance opening (63); and a limiting plate (64) is fixedly connected to the top of the second spring (62); a gap is left between the limiting plate (64) and the top surface of the support frame (1).

4. The open-air blasting charge structure according to claim 3, characterized in that: The feeding part (5) comprises a feeding hopper (51) located above the support frame (1); a discharge pipe (52) is fixedly penetrated at the bottom of the feeding hopper (51); three vertical pipes (53) are fixedly connected to the bottom of the discharge pipe (52); the vertical pipes (53) are fixedly penetrated through the top wall of the support frame (1); a plurality of sliding pipes (54) are fixedly penetrated at the upper half of the moving shell (2); the upper half of the sliding pipe (54) is slidably connected to the corresponding vertical pipe (53).

5. The open-air blasting charge structure according to claim 4, characterized in that: The top surface of the movement plate (4) is arranged to be gradually inclined downward from the center to the periphery.

6. The open-air blasting charge structure according to claim 5, characterized in that: An electric gate valve (9) is fixedly sleeved on the outer peripheral surface of the discharge pipe (52).

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