A medium-length hole blasting charging device

Abstract

The present application relates to the technical field of medium-length hole blasting, and provides a medium-length hole blasting charging device, which comprises a base, a connecting head arranged on the upper side of the base, a discharging pipe arranged below the base, a floating plate arranged at the lower end of the discharging pipe, and a limiting device connected to the side edge of the base; the lower end of the discharging pipe penetrates through the floating plate and extends downward; the connecting head is in communication with the discharging pipe. The medium-length hole blasting charging device can well ensure the compaction state of the blasting hole, improve the stability of the equipment in filling the stemming, and enhance the safety of the equipment.

Description

Technical Field

[0001] This invention relates to the technical field of medium-deep hole blasting, and more specifically, to a medium-deep hole blasting charging device. Background Technology

[0002] Traditional rock tunnel blasting technology generally uses shallow hole blasting. The monthly tunneling advance using this technology usually does not exceed 100m, and the quality of the blasted tunnel is poor, while the tunnel support cost is high. Therefore, improving the traditional blasting technology to increase blasting efficiency is of great significance for rock tunnel excavation.

[0003] By employing medium-deep hole blasting technology, without altering the equipment configuration, changes in the cutting method and blasting techniques can effectively increase the cycle advance and achieve the goal of rapid excavation in rock tunnels. Porous granular ammonium nitrate explosive (ANFO) is used as the main explosive. Each borehole adopts a continuous coupled charging structure. The detonating charge is made of rock emulsion explosive, with two detonators of the same length loaded onto each charge and secured with tape. During the filling of the borehole with stemming material, effective plugging prevents premature leakage of detonation gases from the charging hole, ensuring a high-pressure state within the charging hole before rock fracturing, thus effectively utilizing blasting energy and improving blasting efficiency. The prepared detonating charge and ANFO are loaded into the borehole, which is then filled with stemming material.

[0004] In the process of using existing deep-hole blasting well-drilling charging structures, the filling of stemming material requires extreme care to ensure safety. This makes it impossible to guarantee slow addition, resulting in poor compaction and easy damage to the detonating cord. Summary of the Invention

[0005] The purpose of this invention is to provide a medium-deep hole blasting charging device, which can effectively ensure the compaction state of the blasting hole by filling the blasting hole with blasting mud, thereby improving the stability of the equipment filling the blasting mud and enhancing the safety of the equipment.

[0006] The embodiments of the present invention are achieved through the following technical solutions: The medium-deep hole blasting charging device of the present invention includes a base, a connector disposed on the upper side of the base, a feeding pipe disposed below the base, a float disposed at the lower end of the feeding pipe, and a limiting device connected to the side of the base; the lower end of the feeding pipe passes through the float and extends downward; the connector is connected to the feeding pipe.

[0007] Furthermore, the limiting device is provided in multiple parts, and the multiple limiting devices are distributed along the circumference of the base.

[0008] Furthermore, the limiting device includes a telescopic member connected to the side of the base, a locking plate is provided at the end of the telescopic member away from the base, and a locking tooth is provided on the side of the locking plate away from the telescopic rod; a first spring is provided inside the telescopic member, and the tips of the locking teeth are arranged facing downwards.

[0009] Furthermore, the telescopic component includes a telescopic cylinder connected to the base and a telescopic rod connected to the clamping plate; the telescopic rod is slidably disposed within the telescopic cylinder; the limiting device includes a fixed plate fixedly connected to the telescopic cylinder, a first connecting arm hinged to the clamping plate, a second connecting arm hinged to the fixed plate, and a traction ring hinged to both the first connecting arm and the second connecting arm.

[0010] Furthermore, the limiting device also includes a second spring disposed between the card plate and the fixing plate.

[0011] Furthermore, the limiting device also includes a hollow drive plate disposed at the lower end of the card plate, a slide plate slidably disposed within the drive plate, and a drive rod hinged to the slide plate; the lower end of the drive rod is connected to the float plate; the drive plate is inclined and its lower end faces the feed pipe; the feed pipe is movably connected to the float plate.

[0012] Furthermore, the lower end of the discharge pipe is provided with a filling port, which is connected to the float plate through a connecting frame; the discharge pipe is a telescopic pipe, and a third spring is provided on the outer sleeve of the discharge pipe.

[0013] Furthermore, a roller is provided at the end of the telescopic rod away from the telescopic cylinder.

[0014] Furthermore, the roller is connected to a ratchet assembly.

[0015] Furthermore, a connecting rod is provided on the side of the base, and a protective ring is provided at the end of the connecting rod; the protective ring is used to connect the lead wire.

[0016] The technical solution of this invention has at least the following advantages and beneficial effects: In the use of the medium-deep hole blasting charging device of this invention, the feed pipe for transporting the stemming material is connected to the connector, and then the device is connected to the connecting rope. The entire device is sent into the blast hole. When it is sent to the appropriate position, the limiting device will lock the entire device in the blast hole. The stemming material is sent into the blast hole (located below the float) through the feed pipe and the feed pipe of the connector. As the stemming material is continuously sent in, it fills the space below the float and then pushes the float to rise. During the rising process, the float continues to compress the stemming material, so that the stemming material in the blast hole maintains a certain high pressure, thereby ensuring the compaction of the stemming material.

[0017] Therefore, this device avoids damage to the detonation structure caused by the free fall of the stemming material inside the blast hole by gradually injecting it from the bottom of the blast hole. At the same time, the floats apply a certain amount of pressure to the stemming material inside the blast hole, thereby ensuring that the stemming material inside the blast hole maintains a certain high pressure, thus ensuring the compaction of the stemming material, improving the stability of the equipment's stemming material filling, and enhancing the safety of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the medium-deep hole blasting charging device provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the medium-deep hole blasting charging device provided in an embodiment of the present invention.

[0021] Icons: 10-Float, 11-Base, 12-Connector, 13-Feeding pipe, 14-Third spring, 15-Feeding port, 16-Connecting frame, 17-Connecting rod, 18-Protective ring, 21-Telescopic cylinder, 22-Telescopic rod, 23-Clamping plate, 24-Clamping tooth, 25-First connecting arm, 26-Second connecting arm, 27-Traction ring, 28-Fixing plate, 29-Second spring, 210-Drive plate, 211-Slide plate, 212-Drive rod, 213-Roller. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example

[0028] The following description, in conjunction with specific embodiments, further illustrates the points, as shown in the appendix. Figure 1 -Appendix Figure 2As shown, the medium-deep hole blasting charging device of this embodiment includes a base 11, a connector 12 located on the upper side of the base 11, a feed pipe located below the base 11, a float 10 located at the lower end of the feed pipe, and a limiting device connected to the side of the base 11; the lower end of the feed pipe passes through the float 10 and extends downward; the connector 12 is connected to the feed pipe. Specifically, in use, the feed pipe for transporting the stemming material is connected to the connector 12, and then a connecting rope is used to connect to the device, and the entire device is sent into the blast hole. When it is sent to the appropriate position, the limiting device will lock the entire device in the blast hole, and the stemming material is sent into the blast hole (located below the float 10) through the feed pipe and the feed pipe of the connector 12. As the stemming material is continuously sent in, it fills the space below the float 10, and then pushes the float 10 upward. During the upward process, the float 10 still maintains the compression of the stemming material, so that the stemming material in the blast hole maintains a certain high pressure, thereby ensuring the compaction of the stemming material. Therefore, this device avoids damage to the detonation structure caused by the free fall of the stemming material inside the blast hole by gradually injecting it from the bottom of the blast hole. At the same time, the floats apply a certain amount of pressure to the stemming material inside the blast hole, thereby ensuring that the stemming material inside the blast hole maintains a certain high pressure, thus ensuring the compaction of the stemming material, improving the stability of the equipment's stemming material filling, and enhancing the safety of the equipment.

[0029] In this embodiment, multiple limiting devices are provided, distributed along the circumference of the base 11. Each limiting device includes a telescopic component connected to the side of the base 11. A locking plate 23 is provided at the end of the telescopic component away from the base 11, and locking teeth 24 are provided on the side of the locking plate 23 away from the telescopic rod 22. A first spring is provided inside the telescopic component, and the tips of the locking teeth 24 are positioned downwards. Specifically, the locking teeth 24 in the limiting device can lock onto the inner wall of the blast hole, preventing the device from falling. Since the locking teeth 24 are positioned downwards, they do not obstruct the overall upward movement of the device. The first spring inside the telescopic component can push the locking plate 23 upwards against the inner wall of the blast hole.

[0030] The telescopic component in this embodiment includes a telescopic cylinder 21 connected to the base 11 and a telescopic rod 22 connected to the clamping plate 23; the telescopic rod 22 is slidably disposed within the telescopic cylinder 21; the limiting device includes a fixed plate 28 fixedly connected to the telescopic cylinder 21, a first connecting arm 25 hinged to the clamping plate 23, a second connecting arm 26 hinged to the fixed plate 28, and a traction ring 27 hinged to both the first connecting arm 25 and the second connecting arm 26. The limiting device also includes a second spring 29 disposed between the clamping plate 23 and the fixed plate 28. Specifically, before the entire device is sent into the blast hole, a traction rope can be used to hang on the traction ring 27. When the device is lifted, the traction rope exerts a pulling force on the traction ring 27, which will reduce the angle between the first connecting arm 25 and the second connecting arm 26, causing the telescopic rod 22 to retract into the telescopic cylinder 21. At this time, the clamping plate 23 will not press against the inner wall of the blast hole, and the entire device can be sent into the blast hole well. When the traction rope is released, the clamping plate 23 and the fixing plate 28 move away from each other under the action of the first spring and the second spring 29. At this time, the clamping plate 23 is close to the inner wall of the blast hole and can be stably clamped on the inner wall of the blast hole.

[0031] The limiting device in this embodiment also includes a hollow drive plate 210 located at the lower end of the clamping plate 23, a sliding plate 211 slidably disposed within the drive plate 210, and a drive rod 212 hinged to the sliding plate 211; the lower end of the drive rod 212 is connected to the float plate 10; the drive plate 210 is inclined and its lower end faces the feed pipe; the feed pipe is movably connected to the float plate 10. The lower end of the feed pipe is provided with a filling port 15, which is connected to the float plate 10 through a connecting frame 16; the feed pipe is a telescopic pipe, and a third spring 14 is sleeved on the feed pipe. Specifically, when the mud fills the space below the float 10 and begins to exert a pushing force on the float 10, the float 10 can rise independently a certain distance because the feed pipe is a telescopic structure. At this time, the drive rod 212 will push the slide plate 211 to rise. However, since the slide plate 211 and the drive plate 210 are both inclined, the slide plate 211 will also push the drive plate 210 closer to the feed pipe during the upward movement, causing the clamping plate 23 to move a small distance, so that the clamping plate 23 loses contact with the inner wall of the blast hole. In this way, the entire device can move upward well.

[0032] In this embodiment, the end of the telescopic rod 22 away from the telescopic cylinder 21 is provided with a roller 213. The roller 213 is connected to a ratchet assembly. Specifically, the roller 213 facilitates the entire device to roll within the blast hole, while the ratchet assembly ensures that the roller 213 will only roll upwards and not downwards.

[0033] In this embodiment, a connecting rod 17 is provided on the side of the base 11, and a protective ring 18 is provided at the end of the connecting rod 17; the protective ring 18 is used to connect the lead wire. Specifically, the connecting rod 17 can separate the explosive lead wire from the main body of the device, preventing the equipment from damaging the lead wire.

[0034] In summary, the medium-deep hole blasting charging device of this embodiment connects the feed pipe for transporting the stemming material to the connector 12 during use, and then connects the device with a connecting rope. The entire device is then sent into the blast hole. When it is sent to the appropriate position, the limiting device locks the entire device in the blast hole. The stemming material is then fed into the blast hole (located below the float 10) through the feed pipe and the discharge pipe of the connector 12. As the stemming material is continuously fed in, it fills the space below the float 10, and then pushes the float 10 upward. During the upward process, the float 10 continues to compress the stemming material, so that the stemming material in the blast hole maintains a certain high pressure, thereby ensuring the compaction of the stemming material. Therefore, this device avoids damage to the detonation structure caused by the free fall of the stemming material inside the blast hole by gradually injecting it from the bottom of the blast hole. At the same time, the floats apply a certain amount of pressure to the stemming material inside the blast hole, thereby ensuring that the stemming material inside the blast hole maintains a certain high pressure, thus ensuring the compaction of the stemming material, improving the stability of the equipment's stemming material filling, and enhancing the safety of the equipment.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A medium-length hole blasting charging device, characterized in that: The device comprises a base (11), a connecting head (12) arranged on the upper side of the base (11), a feeding pipe arranged below the base (11), a floating plate (10) arranged at the lower end of the feeding pipe, and a limiting device connected to the side edge of the base (11); The lower end of the feeding pipe extends downward through the floating plate (10); the connecting head (12) is connected to the feeding pipe; the limiting device comprises a telescopic member connected to the side edge of the base (11), and a clamping plate (23) arranged at the end of the telescopic member away from the base (11); a clamping tooth (24) is arranged on the side of the clamping plate (23) away from the telescopic member; The telescopic member is internally provided with a first spring, and the tooth tip of the clamping tooth (24) is arranged downward; The limiting device further comprises a hollow driving plate (210) arranged at the lower end of the clamping plate (23), a sliding plate (211) slidingly arranged in the driving plate (210), and a driving rod (212) hingedly connected to the sliding plate (211); The lower end of the driving rod (212) is connected to the floating plate (10); the driving plate (210) is arranged obliquely, and the lower end thereof faces the feeding pipe; and the feeding pipe is movably connected to the floating plate (10).

2. The medium-length hole blasting charge device according to claim 1, characterized in that: The limiting device comprises a plurality of members, and the plurality of members are distributed along the circumferential direction of the base (11).

3. The medium-length hole blasting charge device according to claim 1, characterized in that: The telescopic member comprises a telescopic cylinder (21) connected to the base (11), and a telescopic rod (22) connected to the clamping plate (23); the telescopic rod (22) is slidingly arranged in the telescopic cylinder (21); The limiting device comprises a fixed plate (28) fixedly connected to the telescopic cylinder (21), a first connecting arm (25) hingedly connected to the clamping plate (23), a second connecting arm (26) hingedly connected to the fixed plate (28), and a traction ring (27) hingedly connected to the first connecting arm (25) and the second connecting arm (26).

4. The medium-length hole blasting charge device according to claim 3, characterized in that: The limiting device further comprises a second spring (29) arranged between the clamping plate (23) and the fixed plate (28).

5. The medium-length hole blasting charge device according to claim 1, characterized in that: The lower end of the feeding pipe is provided with a filling port (15), and the filling port (15) is connected to the floating plate (10) through a connecting frame (16); The feeding pipe is a telescopic pipe, and a third spring (14) is arranged on the outer sleeve of the feeding pipe.

6. The medium-length hole blasting charge device according to claim 3, characterized in that: The end of the telescopic rod (22) away from the telescopic cylinder (21) is provided with a roller (213).

7. The medium-length hole blasting charge device according to claim 6, characterized in that: The roller (213) is connected with a ratchet assembly.

8. The medium-length hole blasting charge device according to claim 1, characterized in that: The side edge of the base (11) is provided with a connecting rod (17), and the end of the connecting rod (17) is provided with a protection ring (18); the protection ring (18) is used to connect a lead wire.

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