A smooth blasting charge structure

Abstract

The utility model discloses a smooth blasting charge structure, including blasting rock bed and according to the charge hole parallel to the exploration surface of excavation, still include the medicine mouth, the fixed plate of fixed installation in the medicine mouth both sides bottom end inner wall, the lead screw of bearing installation in a group fixed plate, the guide rod of fixed installation in another group fixed plate, install the charge mechanism of lead screw and guide rod on, the guide frame of fixed installation in the charge mechanism top and install the turnover bearing mechanism in fixed plate top. The utility model discloses the uncoupling charge, is favorable to improve the stability of side slope after blasting, through the position of the guiding cone surface to the cartridge is blocked, and there is air interval between the cartridge, and the same plane also uses the air to separate between multiple cartridges when spacing charge, forms multiple explosion energy concentration points, and is favorable to improve the stability of side slope after blasting.

Description

Technical Field

[0001] This utility model belongs to the field of rock blasting technology, specifically relating to a smooth blasting charge structure. Background Technology

[0002] Smooth blasting refers to a controlled blasting technique that uses correct blasting parameters and reasonable construction methods to perform micro-delay blasting in sections and segments, so that the blasted outline meets the design requirements and the free face is flat and regular.

[0003] A domestic utility model patent application with application number 202420948469.7 discloses a charging tool for smooth tunnel blasting, including an outer sleeve, an air bladder, an air outlet, a push plate, and a push rod. The outer sleeve is open at both ends and has an inner cavity for holding the explosive cartridge. One end of the outer sleeve has a connecting ring, the inner diameter of which is smaller than the inner diameter of the outer sleeve. The air bladder is located inside the outer sleeve, between the explosive cartridge and the inner wall of the outer sleeve. When inflated, the air bladder compresses the explosive cartridge. The air bladder has an air inlet component. The air outlet passes through the connecting ring and connects to the air bladder. The air outlet has a probe, the end of which is exposed on the outside of the air outlet away from the air bladder. The push plate is slidably disposed inside the outer sleeve, and the push rod is disposed on the side of the push plate away from the connecting ring and connected to the push plate. When the charging tool enters the bottom of the blast hole, continued pressure is applied. The probe is compressed, causing the air bladder to deflate. The air bladder no longer clamps the explosive cartridge, and pushing the push rod pushes the explosive cartridge into the deepest part of the blast hole. The aforementioned utility model uses an airbag to hold the explosive cartridge, but the airbag may be ruptured due to friction and compression from rocks on the borehole wall during the descent, affecting the delivery of the explosive cartridge. In moist or poorly permeable rock strata, the air pressure may vary with depth due to moisture occupying the pores or gas diffusion being restricted, which may affect the airbag. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a smooth blasting charge structure, including blasting rock layers and a charge hole parallel to the excavation face according to the exploration. It also includes a charge inlet, a fixing plate fixedly installed on the inner wall of the bottom end on both sides of the charge inlet, a lead screw mounted on a set of the fixing plates by bearings, a guide rod fixedly installed on another set of the fixing plates, a charge loading mechanism installed on the lead screw and the guide rod, a guide frame fixedly installed on the top of the charge loading mechanism, and a flipping bearing mechanism installed on the top of the fixing plates.

[0005] As a further preferred technical solution of this utility model, the drug-carrying mechanism includes two sets of threaded through blocks that thread through the lead screw and the guide rod respectively, a connecting ring plate welded to the threaded through blocks, and multiple sets of drug-carrying plates installed on the inner side of the connecting ring plate. The drug-carrying plates and the connecting ring plate are connected and installed by two sets of mounting hinges.

[0006] In blasting engineering, decoupled charging and intermittent charging are two charging methods that are most conducive to improving the stability of the slope after blasting. Decoupled charging refers to charging cartridges with a diameter smaller than the borehole diameter. The explosive energy is transferred through air or a buffer medium, reducing the peak pressure on the borehole wall and reducing the range of rock fragmentation. The cartridge is placed directly on the charging plate. By rotating the lead screw, the threaded block through the lead screw drives the charging mechanism downward, moving the cartridge to the bottom of the borehole.

[0007] As a further preferred technical solution of this utility model, the two sets of drug-carrying plates located in the middle position on the connecting ring plate are provided with support grooves on both sides, and the support grooves and limiting blocks on both sides of the drug-carrying plates are mutually limiting and supporting each other.

[0008] When the two sets of drug-carrying plates in the middle position have load-bearing capacity at their bottoms, the support groove supports the limiting blocks on the other sets of drug-carrying plates, and the other sets of drug-carrying plates support each other to ensure the stability of the drug-carrying plate closure. Once the load-bearing capacity at the bottom of the drug-carrying plate in the middle position is lost, the drug-carrying plate is flipped under the action of gravity with the help of the installation hinge, so that all the drug-carrying plates are flipped and the drug roll is delivered, thus realizing the loading of the drug.

[0009] As a further preferred technical solution of this utility model, the flipping bearing mechanism includes a connecting ring limited to the top of the fixed plate, a force-bearing ring located at the top of the connecting ring, a spring strip placed between the connecting ring and the force-bearing ring, a folding frame plate and a pressing plate respectively connected and installed to one side of the connecting ring and the force-bearing ring, the pressing plate and the folding frame plate respectively connected and installed to the force-bearing ring and the connecting ring through a flipping shaft, one end of the pressing plate and one end of the folding frame plate are connected and installed through a connecting shaft, a support plate is fixedly installed at one end of the pressing plate, a magnet is fixedly installed on the top of the support plate, and a smooth rod part is provided at the bottom end of the lead screw at the position of the spring strip.

[0010] The two sets of drug-carrying plates located in the middle of the connecting ring plate are equipped with free-positioning hinges, with built-in damping or friction plates, allowing them to be suspended at will. The bottom of these two sets of drug-carrying plates is fitted with iron blocks that engage with magnetic blocks. The other drug-carrying plates are equipped with gravity hinges, allowing them to automatically flip under gravity. During drug loading, the drug-carrying plates in the middle of the connecting ring plate support the other drug-carrying plates and carry the drug rolls. Rotating the screw moves the drug-carrying mechanism to the force-bearing ring position, which then compresses the connecting ring. This, in conjunction with the flipping shaft, allows the folding frame plate to support the compression plate, bringing it to a horizontal position. The magnetic blocks on the support plate engage with the iron blocks at the bottom of the drug-carrying plates. Rotating the screw again causes the magnetic blocks to engage with the iron blocks at the bottom of the drug-carrying plates. The drug-carrying plates, under pressure, flip with the hinges. The other drug-carrying plates, losing their load-bearing capacity, flip under gravity, thus discharging the drug rolls and achieving the loading effect.

[0011] As a further preferred technical solution of this utility model, a docking frame is fixedly installed on the connecting ring plate at the position of the threaded through block, a guide cone surface is installed at the bottom of the guide frame, and the top two sides of the guide cone surface are fixedly installed with the docking frame through a connecting plate.

[0012] By using guide cones to block the position of the explosive cartridges, air gaps are created between the cartridges. While loading explosives at these gaps, multiple sets of cartridges on the same plane are also separated by air, forming multiple concentrated points of explosive energy, which helps to improve the stability of the slope after blasting.

[0013] As a further preferred technical solution of this utility model, a discharging port is provided at the bottom of the medicine placement port.

[0014] The discharge port is used to directly deliver explosives. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. When the screw is rotated and the drug-loading mechanism moves to the position of the force ring, the force ring is squeezed, which in turn squeezes the connecting ring. This, in conjunction with the flipping shaft, allows the folding frame plate to support the extrusion plate, bringing the extrusion plate to a horizontal position. The magnet on the support plate then engages with the iron block at the bottom of the drug-loading plate. Rotating the screw again causes the magnet to attract the iron block at the bottom of the drug-loading plate. The drug-loading plate, under pressure, flips in conjunction with the hinge. Other drug-loading plates lose their load-bearing capacity and flip under gravity, thus discharging the drug cartridge and achieving the loading effect. This process is convenient and minimizes collisions between the drug cartridge and the hole wall, avoiding the risk of cartridge breakage or deformation. When the screw is rotated, if there is no squeezing between the force ring and the connecting ring, the folding frame plate and the extrusion plate will rotate in opposite directions, keeping them on the same vertical plane and preventing any impact on the drug cartridge during loading.

[0017] 2. In blasting engineering, decoupled charging and spaced charging are two charging methods that are most beneficial to improving the stability of the slope after blasting. Decoupled charging refers to charging cartridges with a diameter smaller than the borehole diameter. The explosive energy is transferred through air or a buffer medium, reducing the peak pressure on the borehole wall and minimizing the rock fragmentation range. The cartridges are placed directly on the charging plate. By rotating the screw, the threaded block through the screw drives the charging mechanism downward, moving the cartridges to the bottom of the borehole. The guide cones block the position of the cartridges, creating air gaps between them. While spaced charging, multiple sets of cartridges on the same plane are also separated by air, forming multiple concentrated points of explosive energy, which helps improve the stability of the slope after blasting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural diagram of the charge loading position of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the location of the drug-carrying mechanism of this utility model;

[0021] Figure 4 This is a structural schematic diagram of the location of the flipping and bearing mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure at the location of the drug-carrying plate of this utility model;

[0023] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0024] In the diagram: 1. Blasting rock layer; 11. Charging hole; 2. Charging inlet; 21. Charging outlet; 22. Fixing plate; 23. Guide rod; 24. Lead screw; 241. Smooth rod section; 3. Charging mechanism; 31. Charging plate; 311. Limiting block; 312. Support groove; 32. Threaded through block; 33. Connecting ring plate; 34. Connecting frame; 35. Installation hinge; 4. Guide frame; 41. Connecting plate; 42. Guide cone surface; 5. Tilting bearing mechanism; 51. Folding frame plate; 52. Tilting shaft; 53. Connecting ring; 54. Force ring; 55. Spring strip; 56. Extrusion plate; 57. Connecting shaft; 58. Support plate; 59. Magnet block. Detailed Implementation

[0025] This specific embodiment is a smooth blasting charge structure.

[0026] The utility model mentioned above uses an airbag to hold the explosive cartridge. However, the airbag may be ruptured due to friction and pressure from rocks on the borehole wall during the descent, affecting the delivery of the explosive cartridge. In moist or poorly permeable rock strata, the air pressure may vary with depth due to water occupying the pores or gas diffusion being restricted, which may also affect the airbag.

[0027] Its structural diagram is as follows Figures 1-6As shown. A smooth blasting charge structure includes a blasting rock layer 1 and a charging hole 11 parallel to the excavation face according to exploration. It also includes a charging port 2, fixed plates 22 fixedly installed on the inner walls of the bottom ends on both sides of the charging port 2, a lead screw 24 mounted on one set of fixed plates 22 via bearings, a guide rod 23 fixedly installed on another set of fixed plates 22, and a charging mechanism 3 mounted on the lead screw 24 and the guide rod 23. The charging mechanism 3 includes two sets of threaded through blocks 32 that thread through and directly through the lead screw 24 and the guide rod 23 respectively, a connecting ring plate 33 welded to the threaded through blocks 32, and multiple sets of charging plates 31 installed inside the connecting ring plate 33. The charging plates 31 and the connecting ring plate 33 are connected by two sets of mounting hinges 35. In blasting engineering, decoupled charging and intermittent charging are two charging methods most beneficial for improving slope stability after blasting. Decoupled charging refers to charging cartridges with a diameter smaller than the borehole diameter, where explosive energy is transferred through air or a buffer medium, reducing peak pressure on the borehole wall and minimizing rock fragmentation. The cartridge is placed directly on the charging plate 31, and by rotating the lead screw 24, the threaded block 32, threaded through the lead screw 24, moves the charging mechanism 3 downward, moving the cartridge to the bottom of the borehole. The two sets of charging plates 31 located in the middle of the connecting ring plate 33 have support grooves 312 on both sides. Other sets of charging plates 31 have mutually limiting support grooves 312 and limiting blocks 311 on both sides, providing mutual limiting support between the charging plates 31. When the two sets of drug-carrying plates 31 located in the middle position have bearing capacity at their bottoms, the limiting blocks 311 on the other sets of drug-carrying plates 31 are supported by the support groove 312, and the other sets of drug-carrying plates 31 support each other to ensure the stability of the drug-carrying plates 31 when closed. Once the bearing capacity at the bottom of the drug-carrying plate 31 located in the middle position is lost, the drug-carrying plate 31 is flipped under the action of gravity with the help of the mounting hinge 35, so that all the drug-carrying plates 31 are flipped and the drug roll is delivered to realize the loading of drugs.

[0028] It also includes a guide frame 4 fixedly installed on the top of the drug-carrying mechanism 3 and a flip-up bearing mechanism 5 installed on the top of the fixed plate 22. The flip-up bearing mechanism 5 includes a connecting ring 53 limited to the top of the fixed plate 22, a force-bearing ring 54 located on the top of the connecting ring 53, a spring bar 55 placed between the connecting ring 53 and the force-bearing ring 54, a folding frame plate 51 and a pressing plate 56 respectively connected and installed to one side of the connecting ring 53 and the force-bearing ring 54. The pressing plate 56 and the folding frame plate 51 are respectively connected and installed to the force-bearing ring 54 and the connecting ring 53 through a flip-up shaft 52. One end of the pressing plate 56 is connected and installed to one end of the folding frame plate 51 through a connecting shaft 57. A support plate 58 is fixedly installed on one end of the pressing plate 56. A magnet block 59 is fixedly installed on the top of the support plate 58. A bare rod part 241 is provided at the bottom end of the lead screw 24 at the position of the spring bar 55. The two sets of drug-carrying plates 31 located in the middle of the connecting ring plate 33 are equipped with free-positioning hinges 35, which have built-in damping or friction plates and can be suspended at will. The bottom of these two sets of drug-carrying plates 31 is equipped with iron blocks that are attracted by the magnet 59. The other sets of drug-carrying plates 31 are equipped with gravity hinges 35, which can automatically rotate by gravity. During drug loading, the drug-carrying plates 31 in the middle of the connecting ring plate 33 support the other sets of drug-carrying plates 31 and carry the drug roll. When the screw 24 is rotated, causing the drug loading mechanism 3 to move to the position of the force ring 54, the force ring 54 is compressed, causing the force ring 54 to engage with the connecting ring 31. The ring 53 compresses the pressure, which, in conjunction with the flipping shaft 52, allows the folding frame plate 51 to support the compression plate 56, bringing the compression plate 56 to a horizontal position. The magnet 59 on the support plate 58 then adheres to the iron block at the bottom of the drug-carrying plate 31. The screw 24 is then rotated, causing the magnet 59 to attract the iron block at the bottom of the drug-carrying plate 31. The drug-carrying plate 31, under pressure, flips in conjunction with the hinge 35. Other drug-carrying plates 31 lose their load-bearing capacity and flip under gravity, thus discharging the drug roll and achieving the loading effect. This process is convenient and reduces collisions between the drug roll and the hole wall, avoiding the risk of damage or deformation. When the screw 24 is rotated, if there is no compression between the force ring 54 and the connecting ring 53, the folding frame plate 51 and the compression plate 56 will rotate in opposite directions, keeping them on the same vertical plane and preventing any impact on the drug roll during loading. A docking frame 34 is fixedly installed on the connecting ring plate 33 at the position of the threaded through block 32. A guide cone surface 42 is installed at the bottom of the guide frame 4, and the top two sides of the guide cone surface 42 are fixedly installed to the docking frame 34 through a connecting plate 41. The guide cone surface 42 blocks the position of the explosive cartridges, creating air gaps between them. While loading explosives at intervals of 30cm, multiple sets of explosive cartridges on the same plane are also separated by air, forming multiple concentrated points of explosive energy, which helps to improve the stability of the slope after blasting. A discharge port 21 is opened at the bottom of the loading port 2. The discharge port 21 is used to directly deliver the explosives.Smooth blasting is an important mining blasting technology. This patented technology can improve the effect of smooth blasting, effectively improve the stability of the slope after blasting, and reduce construction costs. In blasting projects, decoupled charges and interval charges are the two most effective charging methods to improve the stability of the slope after blasting.

[0029] First, a medicine roll is placed on top of the medicine-carrying plate 31 to define its position. The screw 24 is rotated to lower the medicine-carrying mechanism 3. When the mechanism moves to the position of the force ring 54, the force ring 54 is squeezed, causing it to press against the connecting ring 53. This, in conjunction with the flipping shaft 52, allows the folding frame plate 51 to support the compression plate 56, bringing it to a horizontal position. The magnet 59 on the support plate 58 then adheres to the iron block at the bottom of the medicine-carrying plate 31. The screw 24 is then rotated, causing the magnet 59 to attract the iron block at the bottom of the medicine-carrying plate 31. The medicine-carrying plate 31, under pressure, flips in conjunction with the hinge 35. Other medicine-carrying plates 31 lose their load-bearing capacity and flip under gravity, thus discharging the medicine roll and achieving the desired loading effect. This process is convenient and minimizes collisions between the medicine roll and the hole wall, avoiding the risk of damage or deformation.

[0030] All technical features in this embodiment can be freely combined according to actual needs.

[0031] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A smooth blasting charge structure, comprising blasting rock strata (1) and charging holes (11) parallel to the excavation face according to exploration, characterized in that, It also includes a drug placement port (2), a fixing plate (22) fixedly installed on the inner wall of the bottom end on both sides of the drug placement port (2), a lead screw (24) fixedly installed on a set of the fixing plates (22) by bearings, a guide rod (23) fixedly installed on another set of the fixing plates (22), a drug loading mechanism (3) installed on the lead screw (24) and the guide rod (23), a guide frame (4) fixedly installed on the top of the drug loading mechanism (3), and a flipping bearing mechanism (5) installed on the top of the fixing plate (22).

2. The smooth explosive charge structure according to claim 1, characterized in that: The drug-carrying mechanism (3) includes two sets of threaded through blocks (32) that thread through the lead screw (24) and the guide rod (23) respectively, a connecting ring plate (33) welded to the threaded through blocks (32), and multiple sets of drug-carrying plates (31) installed inside the connecting ring plate (33). The drug-carrying plates (31) and the connecting ring plate (33) are connected and installed by two sets of mounting hinges (35).

3. The smooth explosive charge structure according to claim 2, characterized in that: The two sets of drug-carrying plates (31) located in the middle position on the connecting ring plate (33) are provided with support grooves (312) on both sides. The drug-carrying plates (31) are respectively provided with support grooves (312) and limiting blocks (311) that limit each other. The drug-carrying plates (31) limit and support each other.

4. The smooth explosive charge structure according to claim 1, characterized in that: The flipping bearing mechanism (5) includes a connecting ring (53) limited to the top of the fixed plate (22), a force-bearing ring (54) located at the top of the connecting ring (53), a spring strip (55) placed between the connecting ring (53) and the force-bearing ring (54), a folding frame plate (51) and a pressing plate (56) respectively connected and installed to one side of the connecting ring (53) and the force-bearing ring (54). The pressing plate (56) and the folding frame plate (51) are respectively connected and installed to the force-bearing ring (54) and the connecting ring (53) through a flipping shaft (52). One end of the pressing plate (56) is connected and installed to one end of the folding frame plate (51) through a connecting shaft (57). A support plate (58) is fixedly installed at one end of the pressing plate (56). A magnet block (59) is fixedly installed on the top of the support plate (58). A bare rod part (241) is provided at the bottom end of the lead screw (24) at the position of the spring strip (55).

5. The smooth explosive charge structure according to claim 2, characterized in that: A docking frame (34) is fixedly installed on the connecting ring plate (33) at the position of the threaded through block (32). A guide cone (42) is installed at the bottom of the guide frame (4). The top two sides of the guide cone (42) are fixedly installed with the docking frame (34) through a connecting plate (41).

6. The smooth explosive charge structure according to claim 1, characterized in that: The medicine inlet (2) has a medicine outlet (21) at the bottom.

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