A cartridge pushing device for tunnel blasting

Abstract

The utility model discloses a cartridge pushing device for tunnel blasting, including support seat, the threaded hole is passed through and is seted up on the support seat, first threaded rod is threadedly connected in the threaded hole, the upper end of first threaded rod is rotated and is connected with the push board through the bearing, the support seat is fixedly connected with the clamping block of triangle shape setting, the push board is passed through and is seted up with the clamping hole of triangle shape setting, the injection hole is passed through and is seted up on the clamping block and the support seat together, the lower surface of support seat is seted up with the rotation groove, the threaded groove is passed through and is seted up between the outer wall of support seat and rotation groove, the beneficial effects of the utility model are: triangle clamping block and cartridge recess joint, limit cartridge rotation deviation, ensure the design direction of energy accumulation hole, and first threaded rod and threaded hole transmission realize the quantitative control of advancing distance. Subsequently, the cannon mud is filled first, and then the mounting seat is disassembled, so that the cartridge is supported throughout the whole process, deformation and movement are avoided, and the problems of inaccurate depth and angle deviation are solved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel blasting hole loading technology, specifically a tunnel blasting explosive roll pushing device. Background Technology

[0002] In tunnel blasting, the accuracy of the angle and the controllability of the depth of the shaped charge directly determine the blasting effect, especially in scenarios such as smooth blasting and pre-splitting blasting, where it is crucial to ensure that the shaped charge cavity is aligned with the design direction and that the depth meets the requirements. However, existing charge delivery technologies have key shortcomings: On the one hand, traditional pushing tools (such as bamboo poles and wooden sticks) lack directional limiting structures. When pushing and placing the explosive cartridge, it is easily rotated or deviated due to friction from the hole wall and obstruction from gravel at the bottom of the hole. This causes the shaped charge cavity to deviate from the preset blasting direction, which in turn leads to problems such as uneven rock fragmentation and over- or under-excavation, increasing subsequent repair costs. Moreover, manual judgment of pushing depth based on experience cannot achieve quantitative control, often resulting in the explosive cartridge being too shallow or too deep, affecting the efficiency of blasting energy release. On the other hand, the connection between the filling of the stemming material and the operation of the equipment is not reasonable. Existing technologies often disassemble the pushing device before filling the stemming material, or the device is difficult to recover after filling. This causes the explosive cartridge to lose stable support during the subsequent filling of stemming material and adjustment of the equipment. It is easy to deform or shift due to external pressure, which further aggravates the problems of inaccurate depth and angle deviation, seriously affecting the stability of the blasting effect and failing to meet the needs of high-precision tunnel blasting construction. Utility Model Content

[0003] The purpose of this invention is to provide a tunnel blasting explosive roll delivery device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tunnel blasting explosive cartridge pushing device, comprising a support base, a threaded hole through which the support base is formed, a first threaded rod threadedly connected to the threaded hole, a push plate rotatably connected to the upper end of the first threaded rod via a bearing, a triangularly shaped locking block fixedly connected to the support base, a triangularly shaped locking hole through which the push plate is formed, an injection hole through which the locking block and the support base are formed, a rotating groove on the lower surface of the support base, a threaded groove through which the outer wall of the support base and the rotating groove are formed, a second threaded rod threadedly connected to the threaded groove, one end of the second threaded rod extending into the rotating groove and fixedly connected to a rotating block.

[0005] Preferably, the lower end of the first threaded rod extends outside the support base, and the lower end of the first threaded groove is provided with a retaining groove.

[0006] Preferably, the upper end of the card block passes through the card hole and extends upward to the outside of the push plate.

[0007] Preferably, the upper opening of the injection hole is located on the outer wall of the block near the lower end, and the lower opening of the injection hole is located on the lower surface of the support.

[0008] Preferably, a shaped charge is placed on the upper surface of the push plate, and the groove on the shaped charge coincides with the locking block.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the precise engagement of the triangular locking block with the groove of the shaped charge cartridge can strictly limit the rotation and offset of the cartridge during the pushing and placement process, ensuring that the shaped charge cavity of the cartridge is always aligned with the blasting design direction; at the same time, the threaded transmission structure of the first threaded rod and the threaded hole can realize the quantitative control of the cartridge pushing distance. Then, by filling the stemming material first and then disassembling the mounting base, the cartridge will be supported throughout the process, thus avoiding deformation and movement in subsequent operations, and thus avoiding problems such as inaccurate depth and angle offset. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention in the state before being pushed. Figure 2 This is a structural schematic diagram of the mounting base of this utility model in the removed state; Figure 3 This is a schematic diagram of the mounting base of this utility model; Figure 4 This is a schematic diagram of the structure of the push plate of this utility model.

[0011] In the diagram: 1. Support base; 2. Threaded hole; 3. First threaded rod; 4. Push plate; 5. Locking block; 6. Locking hole; 7. Injection hole; 8. Rotating groove; 9. Threaded groove; 10. Second threaded rod; 11. Rotating block; 12. Locking groove. Detailed Implementation

[0012] 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.

[0013] like Figures 1-4 As shown, this utility model provides the following technical solution: Example 1: A tunnel blasting explosive cartridge pushing device includes a support base 1, a threaded hole 2 through the support base 1, a first threaded rod 3 threadedly connected to the threaded hole 2, a push plate 4 rotatably connected to the upper end of the first threaded rod 3 via a bearing, a triangularly arranged locking block 5 fixedly connected to the support base 1, a triangularly arranged locking hole 6 through the push plate 4, an injection hole 7 through the locking block 5 and the support base 1, a rotating groove 8 on the lower surface of the support base 1, a threaded groove 9 through the outer wall of the support base 1 and the rotating groove 8, a second threaded rod 10 threadedly connected to the threaded groove 9, one end of the second threaded rod 10 extending into the rotating groove 8 and fixedly connected to a rotating block 11; When using it, the following steps are included: First, place the shaped charge on the push plate 4 and engage the groove on the shaped charge with the locking block 5 to place and support the shaped charge. The second step is to insert the support base 1, the push plate 4 and the shaped charge into the blast hole, and then rotate the second threaded rod 10 by rotating the rotating block 11. The second threaded rod 10 moves outward in the threaded groove 9 and abuts against the inner wall of the blast hole, thereby clamping and fixing the support base 1 at the opening of the blast hole. The third step is to insert the flathead screwdriver into the slot 12 and rotate the first threaded rod 3. The first threaded rod 3 will rotate in the threaded hole 2 and drive the push plate 4 to move in the blast hole until the shaped charge cartridge abuts against the innermost end of the blast hole. Fourth step: At this time, a gap can be made between the support base 1 and the push plate 4. Then, through the gap between the support base 1 and the blast hole, the stemming clay is injected into the gap between the support base 1 and the push plate 4 and the blast hole. When it is about to set, air is injected into the stemming clay through the injection hole 7, so that a cavity is created between the clamping block 5 and the stemming clay. Step 5: After the clay has solidified and solidified, it will support and fix the push plate 4. At this time, the second threaded rod 10 can be rotated by rotating block 11 to retract the second threaded rod 10 into the threaded groove 9, thereby releasing the support of the support seat 1. Then, the first threaded rod 3 is rotated, and the first threaded rod 3, supported by the push plate 4, pushes the support seat 1 to move outward. A cavity appears at the connection between the locking block 5 and the clay, so that the locking block 5 is not fixed, making it easier to remove the support seat 1 and the locking block 5. Finally, the gap after the support seat 1 and the locking block 5 are removed is filled, so that the installation angle of the shaped charge and the subsequent fixing effect are better and more convenient.

[0014] Example 2: The technical solutions in this example that differ from Example 1 include: The lower end of the first threaded rod 3 extends to the outside of the support base 1, and the lower end of the first threaded groove 3 is provided with a slot 12. A flathead screwdriver is inserted into the slot 12, and the first threaded rod 3 is rotated by the engagement of the flathead screwdriver with the slot 12. The upper end of the locking block 5 passes through the locking hole 6 and extends upward to the outside of the push plate 4. The upper opening of the injection hole 7 is opened on the outer wall of the locking block 5 near the lower end, and the lower opening of the injection hole 7 is opened on the lower surface of the support base 1. A shaped charge explosive cartridge is placed on the upper surface of the push plate 4, and the groove on the shaped charge explosive cartridge coincides with the locking block 5.

[0015] 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 tunnel blasting explosive cartridge delivery device, comprising a support base (1), characterized in that, The support base (1) has a threaded hole (2) through it. A first threaded rod (3) is threadedly connected to the threaded hole (2). The upper end of the first threaded rod (3) is rotatably connected to a push plate (4) via a bearing. A triangularly arranged locking block (5) is fixedly connected to the support base (1). A triangularly arranged locking hole (6) is through it on the push plate (4). An injection hole (7) is through it on both the locking block (5) and the support base (1). A rotating groove (8) is opened on the lower surface of the support base (1). A threaded groove (9) is through it between the outer wall of the support base (1) and the rotating groove (8). A second threaded rod (10) is threadedly connected to the threaded groove (9). One end of the second threaded rod (10) extends into the rotating groove (8) and is fixedly connected to a rotating block (11).

2. The tunnel blasting explosive cartridge delivery device according to claim 1, characterized in that: The lower end of the first threaded rod (3) extends outside the support base (1), and a slot (12) is provided at the lower end of the first threaded rod (3).

3. The tunnel blasting explosive cartridge delivery device according to claim 1, characterized in that: The upper end of the card block (5) passes through the card hole (6) and extends upward to the outside of the push plate (4).

4. The tunnel blasting explosive cartridge delivery device according to claim 1, characterized in that: The upper opening of the injection hole (7) is located on the outer wall of the card block (5) near the lower end, and the lower opening of the injection hole (7) is located on the lower surface of the support base (1).

5. The tunnel blasting explosive cartridge delivery device according to claim 1, characterized in that: The upper surface of the push plate (4) is provided with a shaped charge explosive cartridge, and the groove on the shaped charge explosive cartridge coincides with the locking block (5).

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