Pre-splitting blasting charging structure for peripheral holes of foundation pit

Abstract

The utility model relates to the technical field of blasting engineering, in particular to a foundation pit peripheral hole presplitting blasting charging structure which comprises a charging box, a bottom shell covers the charging box, a top shell is fixedly connected to the upper surface of the bottom shell, a threaded sleeve is arranged in the top shell, a threaded rod is arranged in the threaded sleeve in a sleeved mode, and the bottom of the threaded rod is fixedly connected with a U-shaped frame. A driving roller is arranged in the U-shaped frame, an adjusting plate is installed on the lower side of the driving roller and slidably installed on a limiting rod, and a fixing frame is arranged on the lower side of the limiting rod; the device has the beneficial effects that cartridges of different models are placed in the grooves formed in the charging box, the U-shaped frame moves downwards, the U-shaped frame is adjusted to the proper height away from the charging box, the distance between the adjusting plates is adjusted, then the adjusting plates move to drive the fixing frame to move to the position above the cartridges, and finally the cartridges are fixed by rotating the adjusting rods. And one end of the adjusting rod abuts against the cartridge, so that the cartridge is fixed, and finally the cartridges with different sizes can be fixed while the fixing mechanism is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting engineering, and particularly relates to a pre-splitting blasting charge structure for peripheral holes of a foundation pit. Background Technique

[0002] The pre-splitting blasting charge structure for peripheral holes of a foundation pit is a technology applied in blasting engineering. Its main purpose is to pre-blast a through crack with a certain width on the designed excavation contour line before blasting. This crack can reflect and buffer the vibration waves of subsequent blasting, thereby controlling its destructive influence on the reserved rock mass and making the excavation contour after blasting smoother.

[0003] In the prior art, a series-connected interval charge structure is mainly adopted in pre-splitting blasting. According to the specified linear charge density, standard cartridges or self-modified small cartridges are bundled on the detonating cord at a certain distance, and then tied to bamboo slices or bamboo poles together and placed into the hole. The problem is that during implementation, the cartridges are placed in the charge box. Due to the fixed position of the fixing mechanism and the different sizes of the cartridges, the fixing mechanism cannot be flexibly adjusted to fix the cartridges. At the same time, using the same fixing mechanism to fix cartridges of different sizes cannot ensure the fixing stability, and ultimately affects the pre-splitting blasting effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pre-splitting blasting charge structure for peripheral holes of a foundation pit to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pre-splitting blasting charge structure for peripheral holes of a foundation pit, comprising: a charge box, a bottom shell is covered outside the charge box, a top shell is fixedly connected to the upper surface of the bottom shell, a threaded sleeve is arranged inside the top shell, and a threaded rod is sleeved inside the threaded sleeve.

[0006] The bottom of the threaded rod is fixedly connected to a U-shaped frame, a driving roller is arranged inside the U-shaped frame, an adjusting plate is installed on the lower side of the driving roller, the adjusting plate is slidably installed on a limiting rod, and a fixing frame is arranged on the lower side of the limiting rod, and an adjusting rod is sleeved on the fixing frame.

[0007] Preferably, the side wall of the charge box is slidably connected with the bottom shell, the bottom of the bottom shell is fixedly connected to the charge box through bolts, and both sides of the bottom shell are fixedly connected to a cover plate through screws.

[0008] Preferably, the outer circumferential surface of the threaded sleeve is fixedly sleeved inside a worm gear, a worm is meshed with one side of the worm gear, one end of the worm is rotatably sleeved inside the top shell, and the other end of the worm penetrates through the top shell and is fixedly connected to a hand wheel.

[0009] Preferably, the side wall of the U-shaped frame is slidably connected with the bottom shell and the top shell, one end of the driving roller is rotatably sleeved on one side of the U-shaped frame, and the other end of the driving roller is fixedly connected to an adjusting wheel.

[0010] Preferably, spiral grooves are provided on the surface of the driving roller, one end of the sliding rod is slidably connected to the spiral grooves, and the other end of the sliding rod is fixedly connected to the upper surface of the adjusting plate.

[0011] Preferably, both ends of the limiting rod are fixedly connected to the U-shaped frame, both sides of the upper surface of the fixing frame are fixedly connected to the adjusting plate, the adjusting rod is threadedly connected to the fixing frame, and one end of the adjusting rod is fixedly connected to the buffer pad.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the device has a reasonable structure, low cost and convenient use. The charging box is provided with a plurality of charging grooves, which can accommodate a plurality of cartridges of different models at one time, improving the blasting force at a single point. By rotating the handwheel, the height of the U-shaped frame is indirectly adjusted, so as to facilitate the adjustment of the height of the fixing frame, and further facilitate the fixing of the cartridges by the adjusting rod, preventing the cartridges from shifting during blasting and affecting the blasting effect. The spiral grooves provided on the surface of the driving roller drive the sliding rod to slide therein, so that the sliding rod drives the adjusting plate fixedly connected thereto to move, increasing the distance between the adjusting plates, and further adjusting the distance between the adjusting plates, so as to facilitate the fixing of the cartridges at different positions in the charging box, realizing flexible adjustment of the position of the fixing mechanism. Since the adjusting rod is threadedly connected to the fixing frame, each adjusting rod can be adjusted, so as to adapt to cartridges of different models, further improving the cartridge fixing effect, effectively fixing cartridges of different models, and further improving the pre-splitting blasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 is a top view of the internal structure of the utility model;

[0015] Figure 3 is a side view of the internal structure of the utility model;

[0016] Figure 4 is a bottom view of the internal structure of the utility model.

[0017] In the figure: 1, charging box; 2, bottom shell; 3, top shell; 4, threaded sleeve; 5, threaded rod; 6, U-shaped frame; 7, driving roller; 8, adjusting plate; 9, limiting rod; 10, fixing frame; 11, adjusting rod; 12, bolt; 13, screw; 14, cover plate; 15, worm gear; 16, worm; 17, handwheel; 18, adjusting wheel; 19, spiral groove; 20, sliding rod; 21, buffer pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make its advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0019] Embodiment 1: Please refer to Figures 1-4 , the present utility model provides a technical solution: a pre-splitting blasting charging structure for holes around a foundation pit, including: a charging box 1, a bottom shell 2 is externally covered on the charging box 1, a top shell 3 is fixedly connected to the upper surface of the bottom shell 2, a threaded sleeve 4 is arranged inside the top shell 3, a threaded rod 5 is sleeved inside the threaded sleeve 4, the bottom of the threaded rod 5 is fixedly connected to a U-shaped frame 6, a driving roller 7 is arranged inside the U-shaped frame 6, an adjusting plate 8 is installed below the driving roller 7, the adjusting plate 8 is slidably installed on a limiting rod 9, a fixing frame 10 is arranged below the limiting rod 9, and an adjusting rod 11 is sleeved on the fixing frame 10.

[0020] Place cartridges of different models in the grooves opened in the charging box 1, cover the top shell 3 and the bottom shell 2 outside the charging box 1. At this time, by rotating the threaded sleeve 4, the threaded rod 5 sleeved inside it moves, and the threaded rod 5 drives the U-shaped frame 6 fixedly connected to its bottom to move, so that the U-shaped frame 6 moves downward, and the U-shaped frame 6 is adjusted to a suitable height from the charging box 1. At this time, the rotation of the driving roller 7 indirectly drives the adjusting plate 8 to slide on the limiting rod 9. There are multiple adjusting plates 8, so as to adjust the distance between the adjusting plates 8. Then, the movement of the adjusting plate 8 drives the fixing frame 10 to move above the cartridge. Finally, by rotating the adjusting rod 11, one end of the adjusting rod 11 abuts against the cartridge, so as to fix the cartridge, and thus it is realized that the fixing mechanism can be adjusted and at the same time it is convenient to fix cartridges of different sizes.

[0021] Embodiment 2: On the basis of Embodiment 1, the side wall of the charging box 1 is slidably connected to the bottom shell 2. The bottom of the bottom shell 2 is fixedly connected to the charging box 1 through bolts 12. Both sides of the bottom shell 2 are fixedly connected to the cover plate 14 through screws 13. The bottom shell 2 is sleeved outside the charging box 1 by sliding from the top of the charging box 1. The charging box 1 is fixedly connected to the bottom shell 2 through the connection of bolts 12. The bottom shell 2 and the cover plate 14 are fixedly connected through screws 13, which facilitates the installation and disassembly of the cover plate 14. By disassembling the cover plate 14, it is convenient to operate inside the bottom shell 2. The outer circumferential surface of the threaded sleeve 4 is fixedly sleeved inside the worm gear 15. One side of the worm gear 15 is engaged with a worm 16. One end of the worm 16 is rotatably sleeved inside the top shell 3. The other end of the worm 16 penetrates through the top shell 3 and is fixedly connected to the hand wheel 17. The worm gear 15 is rotatably installed on the support frame. The support frame limits the worm gear 15. The support frame is fixedly installed inside the top shell 3. By rotating the hand wheel 17, the hand wheel 17 drives the worm 16 to rotate. The worm 16 is in meshing transmission with the worm gear 15 on its side, so that the worm gear 15 drives the threaded sleeve 4 to rotate. The threaded sleeve 4 thus drives the threaded rod 5 to move. The top of the threaded rod 5 is rotatably sleeved inside the top shell 3. The top shell 3 limits the threaded rod 5.

[0022] By rotating the hand wheel 17, the hand wheel 17 drives the worm 16 fixedly sleeved inside it to rotate in the top shell 3. The worm 16 is in meshing transmission with the worm gear 15 on its side, so that the worm gear 15 drives the threaded sleeve 4 to rotate. Under the rotation action of the threaded sleeve 4, the threaded sleeve 4 further drives the threaded rod 5 to move, so that the threaded rod 5 drives the U-shaped frame 6 fixedly connected to its bottom to slide inside the top shell 3 and the bottom shell 2, thereby realizing the adjustment of the height of the U-shaped frame 6, facilitating the adjustment of the height of the fixing frame 10, and further facilitating the fixing of the cartridge by the adjusting rod 11. After the cartridge is fixedly installed, first fix the bottom shell 2 and the cover plate 14 through screws 13, and then fix the bottom shell 2 and the charging box 1 through bolts 12.

[0023] Embodiment 3: On the basis of Embodiment 2, the side wall of the U-shaped frame 6 is slidably connected to the bottom shell 2 and the top shell 3. One end of the driving roller 7 is rotatably sleeved on one side of the U-shaped frame 6. The other end of the driving roller 7 is fixedly connected to the adjusting wheel 18. The driving roller 7 is rotatably sleeved inside the U-shaped frame 6. By rotating the adjusting wheel 18, the adjusting wheel 18 drives the driving roller 7 to rotate. The surface of the driving roller 7 is provided with a spiral groove 19. One end of the spiral groove 19 is slidably connected to one end of the slide bar 20. The other end of the slide bar 20 is fixedly connected to the upper surface of the adjusting plate 8. When the driving roller 7 rotates, the spiral groove 19 provided on its surface is slidably connected to the slide bar 20, so that the slide bar 20 drives the adjusting plate 8 to slide on the limiting rod 9. Both ends of the limiting rod 9 are fixedly connected to the U-shaped frame 6. Both sides of the upper surface of the fixing frame 10 are fixedly connected to the adjusting plate 8. The adjusting rod 11 is threadedly connected to the fixing frame 10. One end of the adjusting rod 11 is fixedly connected to the buffer pad 21. The limiting rod 9 is fixed on the U-shaped frame 6 to limit the adjusting plate 8.

[0024] When the U-shaped frame 6 is adjusted to a suitable height from the charging box 1, by rotating the adjusting wheel 18, the adjusting wheel 18 drives the driving roller 7 to rotate, so that the spiral groove 19 formed on the surface of the driving roller 7 drives the sliding rod 20 to slide therein, and then the sliding rod 20 drives the adjusting plate 8 fixedly connected thereto to move, increasing the distance between the adjusting plates 8, thereby adjusting the distance between the adjusting plates 8, which facilitates fixing the cartridges at different positions in the charging box 1. When the adjusting plate 8 is adjusted to a suitable position, by twisting the adjusting rod 11 threadedly connected in the fixing frame 10, the adjusting rod 11 moves towards the outer circumferential surface of the cartridge until the buffer pad 21 at one end of the adjusting rod 11 abuts against the cartridge, thus fixing the cartridge. Since there is a threaded connection between the adjusting rod 11 and the fixing frame 10, each adjusting rod 11 can be adjusted, and thus cartridges of different models can be adapted, further improving the cartridge fixing effect.

[0025] In actual use, cartridges of different models are placed in the grooves formed in the charging box 1, and the top shell 3 and the bottom shell 2 are sleeved outside the charging box 1. By rotating the handwheel 17, the handwheel 17 drives the worm 16 fixedly sleeved therein to rotate in the top shell 3. The worm 16 meshes with and drives the worm gear 15 on one side thereof, so that the worm gear 15 drives the threaded sleeve 4 to rotate. Under the rotation of the threaded sleeve 4, the threaded sleeve 4 further drives the threaded rod 5 to move, so that the threaded rod 5 drives the U-shaped frame 6 fixedly connected to its bottom to slide in the top shell 3 and the bottom shell 2, thereby realizing the adjustment of the height of the U-shaped frame 6, facilitating the adjustment of the height of the fixing frame 10, and further facilitating the fixing of the cartridges by the adjusting rod 11. When the U-shaped frame 6 is adjusted to a suitable height from the charging box 1, by rotating the adjusting wheel 18, the adjusting wheel 18 drives the driving roller 7 to rotate, so that the spiral groove 19 formed on the surface of the driving roller 7 drives the sliding rod 20 to slide therein, and then the sliding rod 20 drives the adjusting plate 8 fixedly connected thereto to move, increasing the distance between the adjusting plates 8, thereby adjusting the distance between the adjusting plates 8, which facilitates fixing the cartridges at different positions in the charging box 1. When the adjusting plate 8 is adjusted to a suitable position, by twisting the adjusting rod 11 threadedly connected in the fixing frame 10, the adjusting rod 11 moves towards the outer circumferential surface of the cartridge until the buffer pad 21 at one end of the adjusting rod 11 abuts against the cartridge, thus fixing the cartridge. Since there is a threaded connection between the adjusting rod 11 and the fixing frame 10, each adjusting rod 11 can be adjusted, and thus cartridges of different models can be adapted, further improving the cartridge fixing effect. After the cartridges are fixedly installed, first fix the bottom shell 2 and the cover plate 14 with screws 13, and then fix the bottom shell 2 and the charging box 1 with bolts 12.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-splitting blasting charge structure for holes around a foundation pit, comprising a charge box (1), characterized in that: The outer part of the charging box (1) is covered with a bottom shell (2). The upper surface of the bottom shell (2) is fixedly connected with a top shell (3). A threaded sleeve (4) is arranged inside the top shell (3), and a threaded rod (5) is sleeved inside the threaded sleeve (4). The bottom of the threaded rod (5) is fixedly connected with a U-shaped frame (6). A driving roller (7) is arranged inside the U-shaped frame (6). An adjusting plate (8) is installed on the lower side of the driving roller (7). The adjusting plate (8) is slidably installed on a limiting rod (9). A fixing frame (10) is arranged on the lower side of the limiting rod (9), and an adjusting rod (11) is sleeved on the fixing frame (10).

2. The charge structure for pre-splitting blasting of holes around a foundation pit according to claim 1, wherein: The side wall of the charging box (1) is slidably connected with the bottom shell (2). The bottom of the bottom shell (2) is fixedly connected with the charging box (1) through bolts (12). Both sides of the bottom shell (2) are fixedly connected with a cover plate (14) through screws (13).

3. The charge structure for pre-splitting blasting of peripheral holes around a foundation pit according to claim 2, characterized in that: The outer circumferential surface of the threaded sleeve (4) is fixedly sleeved inside a worm gear (15). A worm (16) is engaged with one side of the worm gear (15). One end of the worm (16) is rotatably sleeved inside the top shell (3), and the other end of the worm (16) penetrates through the top shell (3) and is fixedly connected with a hand wheel (17).

4. The charge structure for pre-splitting blasting of holes around a foundation pit according to claim 3, characterized in that: The side wall of the U-shaped frame (6) is slidably connected with the bottom shell (2) and the top shell (3). One end of the driving roller (7) is rotatably sleeved on one side of the U-shaped frame (6), and the other end of the driving roller (7) is fixedly connected with an adjusting wheel (18).

5. The charge structure for pre-splitting blasting of peripheral holes around a foundation pit according to claim 4, characterized in that: A spiral groove (19) is formed on the surface of the driving roller (7). One end of a slide bar (20) is slidably connected with the spiral groove (19), and the other end of the slide bar (20) is fixedly connected with the upper surface of the adjusting plate (8).

6. The charge structure for pre-splitting blasting of peripheral holes around a foundation pit according to claim 5, characterized in that: Both ends of the limiting rod (9) are fixedly connected with the U-shaped frame (6). Both sides of the upper surface of the fixing frame (10) are fixedly connected with the adjusting plate (8). The adjusting rod (11) is in threaded connection with the fixing frame (10), and one end of the adjusting rod (11) is fixedly connected with a buffer pad (21).

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