Continuous charging equipment for tunnel blasting construction

By designing a continuous charging device for tunnel blasting construction, and using a servo motor to drive the transmission screw to push the explosive cartridges, the problems of high labor intensity and low efficiency in the existing charging technology have been solved, and a highly efficient and simple charging process has been achieved.

CN223965979UActive Publication Date: 2026-03-03DALIAN WEIYE BLASTING ENGINEERING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-24
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

In existing tunnel blasting construction, the segmented charging process is labor-intensive, especially when the amount of explosives is large and the number of blast holes is large, which reduces the efficiency of blasting operations.

Method used

A continuous charging device for tunnel blasting was designed. It uses a servo motor to drive a transmission screw to drive an L-shaped charging rod, which pushes the bundled explosive cartridges into the blast hole as a whole. The depth of the explosive cartridges is controlled by a scale, simplifying the operation process.

Benefits of technology

It improves charging efficiency, reduces labor intensity, and is suitable for charging various blast holes, especially for efficient operation under complex field conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses continuous charging equipment for tunnel blasting construction, which comprises an equipment groove, an explosive feeding groove is arranged above the equipment groove, a storage battery and a driving mechanism are arranged on one side of the equipment groove, a control button is arranged on the side wall of the equipment groove, a foldable support is arranged at the bottom of the equipment groove, and the foldable support is connected with the storage battery. The utility model relates to the technical field of tunnel blasting construction, a bound explosive cartridge is placed in the explosive feeding groove, the explosive loading equipment is moved to the position of a shot hole, one end of the explosive feeding groove is inserted into the shot hole, the driving mechanism is started through the control button, the driving mechanism is used for driving the transmission lead screw to rotate, and the explosive cartridge is loaded into the equipment groove. The transmission lead screw rotates to drive the moving seat to move, so that the whole cartridge is pushed into the blast hole through the L-shaped explosive feeding rod, when the cartridge completely enters the blast hole, the moving seat is controlled to continue to act, the scale change on the L-shaped explosive feeding rod at the blast hole is observed, and when the designed depth is reached, filling is completed.
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Description

Technical Field

[0001] This utility model relates to the field of tunnel blasting construction technology, specifically to a continuous charging device for tunnel blasting construction. Background Technology

[0002] Drill-and-blast method is a commonly used technique in tunnel engineering. It is simple to implement, has a wide range of applications, and is highly adaptable. The main procedures of the drill-and-blast method include surveying and setting out, hole layout, drilling, charging and networking, detonation, ventilation and smoke extraction, safety inspection, removal of loose rocks, and slag removal. In bench deep-hole blasting, to improve blasting quality and reduce vibration, the blast hole needs to be divided into several sections for charging. This is called segmented charging. Segmented charging typically involves dividing the explosive into multiple sections, using thin bamboo strips or similar materials to bind them together, fixing the interval between each section. The bamboo strips, along with the bound explosive cartridges and detonating equipment (detonating cord, detonator, etc.), are then placed into the blast hole. Currently, most techniques involve manually pushing the bound explosive cartridges into the blast hole, which is labor-intensive, especially when the explosive charge is large and the number of blast holes is numerous, further reducing the overall efficiency of the blasting operation. Therefore, this case study addresses these issues and has been developed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a continuous charging device for tunnel blasting construction, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a continuous charging device for tunnel blasting construction, comprising an equipment trough, a charging trough above the equipment trough, a battery and a drive mechanism on one side of the equipment trough, a control button on the side wall of the equipment trough, a foldable support at the bottom of the equipment trough, a transmission control component inside the equipment trough, the moving end of the transmission control component extending into the charging trough, a rectangular through slot on the lower end face of the charging trough, an L-shaped charging rod on the moving end of the transmission control component, a contact block at one end of the L-shaped charging rod, and graduations on the L-shaped charging rod;

[0005] The transmission control assembly includes a transmission screw, a movable seat, a screw nut, and guide members. The transmission screw is rotatably mounted in the equipment slot and one end is connected to the output end of the drive mechanism. The screw nut is embedded in the movable seat and threadedly engaged with the transmission screw. The guide members are symmetrically arranged on both sides of the transmission screw and their movable ends are fixedly connected to the movable seat.

[0006] The aforementioned guide component includes a guide rail and a slider. The guide rail is symmetrically arranged on both sides of the transmission screw, and the slider is slidably mounted on the guide rail and fixedly connected to the movable seat.

[0007] The aforementioned drive mechanism includes a servo motor, a reducer, and a connecting shaft. The input end of the reducer is connected to the drive end of the servo motor, and one end of the connecting shaft is connected to the output end of the reducer, while the other end is connected to the transmission screw.

[0008] The aforementioned drive mechanism is fitted with a protective cover on its outer side.

[0009] Handrails are provided on both sides and at the bottom of the aforementioned equipment slot.

[0010] The aforementioned foldable support is fixed to the ground or a mobile lifting platform. Beneficial effects

[0011] This utility model provides a continuous charging device for tunnel blasting. It has the following advantages: The continuously charging device places the bundled explosive cartridge into the delivery slot, moves the charging equipment to the blast hole position, inserts one end of the delivery slot into the blast hole, and starts the drive mechanism via a control button. The drive mechanism drives the transmission screw to rotate, which in turn moves the moving seat, thus using an L-shaped delivery rod to push the explosive cartridge into the blast hole. When the cartridge is completely inside the blast hole, the moving seat continues to move, and the changes in the scale on the L-shaped delivery rod at the blast hole are observed. When the designed depth is reached, the loading is complete. The drive mechanism is then reversed to reset the moving seat, reloading the explosive and moving the charging equipment to the next blast hole position. The device has a simple structure, is easy to operate, and can be used for charging various blast holes. It is more efficient when used with a lifting device. When on-site conditions are complex, it can also be operated manually. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a continuous charging device for tunnel blasting construction as described in this utility model.

[0013] Figure 2 This is an isometric structural diagram of a continuous charging device for tunnel blasting construction according to the present invention.

[0014] Figure 3 This utility model Figure 1 A schematic diagram of the front view cross-section structure.

[0015] Figure 4 This utility model Figure 1 A schematic diagram of the side view cross-sectional structure.

[0016] In the diagram: 1. Equipment slot; 2. Medicine delivery slot; 3. Battery; 4. Control button; 5. Foldable support; 6. L-shaped medicine delivery rod; 7. Contact block; 8. Transmission screw; 9. Moving seat; 10. Screw nut; 11. Guide rail; 12. Slider; 13. Servo motor; 14. Reducer; 15. Connecting shaft; 16. Protective cover; 17. Handrail. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Refer to the appendix of the instruction manual Figure 1-4As can be seen, this application specifically designs a continuous charging device for tunnel blasting construction. A charging trough 2 is provided above the equipment trough 1. A battery 3 and a drive mechanism are provided on one side of the equipment trough 1. A control button 4 is provided on the side wall of the equipment trough 1. A foldable support 5 is provided at the bottom of the equipment trough 1. A transmission control component is provided inside the equipment trough 1. The moving end of the transmission control component extends into the charging trough 2. A rectangular through slot is provided on the lower end face of the charging trough 2. An L-shaped charging rod 6 is provided on the moving end of the transmission control component. A contact block 7 is provided at one end of the L-shaped charging rod 6. A scale is provided on the L-shaped charging rod 6. The transmission control assembly includes a lead screw 8, a movable seat 9, a lead screw nut 10, and guide members. The lead screw 8 is rotatably mounted in the equipment slot 1, with one end connected to the output end of the drive mechanism. The lead screw nut 10 is embedded in the movable seat 9 and threadedly engaged with the lead screw 8. Guide members are symmetrically arranged on both sides of the lead screw 8, with their moving ends fixedly connected to the movable seat 9. The guide members include guide rails 11 and sliders 12. Guide rails 11 are symmetrically arranged on both sides of the lead screw 8, and sliders 12 are slidably mounted on guide rails 11 and fixedly connected to the movable seat 9. The drive mechanism includes a servo motor. The system consists of a motor 13, a reducer 14, and a connecting shaft 15. The input end of the reducer 14 is connected to the drive end of the servo motor 13. One end of the connecting shaft 15 is connected to the output end of the reducer 14, and the other end is connected to the transmission screw 8. The bundled explosive cartridge is placed into the delivery trough 2. The loading equipment is moved to the borehole position, and one end of the delivery trough 2 is inserted into the borehole. The drive mechanism is started via the control button 4. The servo motor 13 and the reducer 14 work together to drive the connecting shaft 15 to rotate. The rotation of the connecting shaft 15 then drives the transmission screw 8 to rotate, which in turn drives... The movable seat 9 moves to push the entire propellant cartridge into the borehole using the L-shaped feed rod 6. Once the cartridge is fully inside the borehole, the movable seat 9 continues to move. The changes in the scale on the L-shaped feed rod 6 at the borehole are observed. When the designed depth is reached, the loading is complete. The drive mechanism is then reversed to reset the movable seat 9, reload the propellant, and move the loading equipment to the next borehole. The structure is simple and easy to operate, suitable for loading propellant in various boreholes. It is more efficient when used with lifting equipment. When the on-site working conditions are complex, it can also be operated manually.

[0019] In the specific implementation process, as a preferred configuration, a protective cover 16 is fastened to the outside of the aforementioned drive mechanism.

[0020] In practice, as a preferred option, handrails 17 are provided on both sides and at the bottom of the equipment slot 1 to facilitate moving the equipment.

[0021] In practice, as a preferred option, the aforementioned support is fixed to the ground or a mobile lifting platform to facilitate support of the equipment and can be used in conjunction with mobile lifting equipment.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] 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 continuous charging device for tunnel blasting, comprising a charging tank, characterized in that, A medicine delivery trough is provided above the equipment trough. A battery and a drive mechanism are provided on one side of the equipment trough. A control button is provided on the side wall of the equipment trough. A foldable support is provided at the bottom of the equipment trough. A transmission control component is provided inside the equipment trough. The moving end of the transmission control component extends into the medicine delivery trough. A rectangular through slot is opened on the lower end face of the medicine delivery trough. An L-shaped medicine delivery rod is provided on the moving end of the transmission control component. A contact block is provided at one end of the L-shaped medicine delivery rod. A scale is provided on the L-shaped medicine delivery rod. The transmission control assembly includes a transmission screw, a movable seat, a screw nut, and guide members. The transmission screw is rotatably mounted in the equipment slot and one end is connected to the output end of the drive mechanism. The screw nut is embedded in the movable seat and threadedly engaged with the transmission screw. The guide members are symmetrically arranged on both sides of the transmission screw and their movable ends are fixedly connected to the movable seat.

2. The continuous charging equipment for tunnel blasting construction according to claim 1, characterized in that, The guide component includes a guide rail and a slider. The guide rail is symmetrically arranged on both sides of the transmission screw, and the slider is slidably mounted on the guide rail and fixedly connected to the movable seat.

3. The continuous charging equipment for tunnel blasting construction according to claim 1, characterized in that, The drive mechanism includes a servo motor, a reducer, and a connecting shaft. The input end of the reducer is connected to the drive end of the servo motor, and one end of the connecting shaft is connected to the output end of the reducer, while the other end is connected to the transmission screw.

4. The continuous charging equipment for tunnel blasting construction according to claim 1, characterized in that, The drive mechanism is fitted with a protective cover on its outer side.

5. A continuous charging device for tunnel blasting construction according to claim 1, characterized in that, Handrails are provided on both sides and at the bottom of the equipment slot.

6. The continuous charging equipment for tunnel blasting construction according to claim 1, characterized in that, The foldable support is fixed to the ground or a mobile lifting platform.