A borehole charge assist device and method of use thereof

Abstract

The application discloses a kind of blasthole charging auxiliary device and its using method, the device includes support frame, support frame is close to blasthole at one week and is provided with elastic sealing ring, the cavity in the inside of support frame is connected with blasthole, support frame top is connected to vacuum cleaner by vacuum pipeline, the middle part of support frame is provided with guide pipe, the inside of guide pipe is laid with antistatic layer, suspension fixed pulley is installed on the top of guide pipe, suspension fixed pulley is wound with suspension hose, one end of suspension hose is connected to the sealing portion of emulsion explosive strip upper end by clamping mechanism, and the other end is connected to winding machine. When using, emulsion explosive strip is clamped into blasthole by clamping mechanism, blasthole is vacuumed by vacuum cleaner, so that it maintains negative pressure, continue to place emulsion explosive strip downward to design position, until charging is completed. The application effectively solves the phenomenon of blasthole jamming, reduces the labor intensity of workers, and improves the charging efficiency.

Description

Technical Field

[0001] This invention belongs to the field of blasting technology, specifically relating to an auxiliary device for loading explosives into blast holes, and also to a method of using the auxiliary device for loading explosives into blast holes. Background Technology

[0002] Drilling and blasting is a common technique for rock excavation, widely used in fields such as water conservancy and hydropower, mining, and transportation construction. A blast hole is a hole drilled in the blasting material to be filled with explosives.

[0003] Emulsion explosives are widely used in rainy areas of central and southern my country due to their good waterproof performance and moderate sensitivity. For example, in the open-pit iron mine of Henan Zhongjia Mine, there are many water holes during the mining process. This requires the use of bulk emulsion explosives mixed on-site by on-site mixing vehicles. The detonating charges mostly use emulsion strips with a diameter of 110mm, and the on-site mixing vehicles are BCJ-3 type emulsion explosive vehicles. This type of emulsion explosive loading vehicle is widely used because it can complete a large amount of loading work, increase the loading density, improve the loading quality, reduce the number of workers, and reduce production costs.

[0004] Because there are many loose rocks and stones at the blasting site and the working surface of the blasting area is uneven, during the charging process, the holes drilled by the drilling equipment may become clogged due to the movement and stretching of the charging pipe of the on-site mixed explosives charging vehicle on the working surface and inside the hole, as well as other factors such as the movement of workers. This will cause some loose rocks, stones or loose stones on the borehole wall to fall into the borehole, which will reduce the charging speed and affect the charging efficiency. More seriously, it will lead to discontinuous charging in the borehole, resulting in residual explosives or misfires. Several utility model patents, including Chinese Patent No. 201120181857.X "Inflatable Blast Hole Protective Cover", Chinese Patent No. 201420400577.7 "A Wall Protection Device for Protecting the Broken Section of a Blast Hole Opening", and Chinese Patent No. 201420199116.8 "A Support Beam Blasting Blast Hole Protective Structure", introduce devices for protecting blast holes. However, these only solve the problem of protecting the blast hole and still cannot prevent the phenomenon of jamming during the loading of explosives. Currently, there is no device or equipment that can both meet the loading requirements of on-site mixed explosive loading vehicles and effectively protect the blast hole. This is a problem that needs to be solved. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an auxiliary device for loading explosive charges into boreholes and its usage method.

[0006] The technical solution adopted in this invention is an auxiliary device for loading explosives into blast holes, including a support frame, a guide tube in the middle of the support frame, a suspension pulley installed above the guide tube, a suspension hose wound around the suspension pulley, one end of the suspension hose being connected to the sealing part at the upper end of the emulsion explosive strip through a clamping mechanism, and the other end being connected to a winding machine.

[0007] Preferably, the diameter of the guide tube is 2-3 cm smaller than the diameter of the borehole, and an antistatic layer is laid inside the guide tube.

[0008] Preferably, an elastic sealing ring is provided around the perimeter of the support frame near the blast hole. The elastic sealing ring is a double-ring seal. The cavity inside the support frame is connected to the blast hole. The top of the support frame is connected to a vacuum cleaner through a vacuum pipe.

[0009] Preferably, a counterweight ball is fixedly connected to the inner end of the suspension hose, and a clamping mechanism is installed at the bottom of the counterweight ball.

[0010] Preferably, the clamping mechanism includes an installation tube, clamping arms, compression springs, and pull ropes. Three clamping arms are hinged at the bottom opening of the installation tube. The three clamping arms are evenly arranged circumferentially. Each clamping arm has an inwardly bent clamping part at its lower part, and the clamping part faces the radial direction of the installation tube. The drive arm at the upper part of the clamping arm is located inside the installation tube and its end is fixedly connected to a compression spring. The three compression springs can keep the three clamping arms in a clamping state. The end of the drive arm of one of the clamping arms is fixedly connected to a pull rope. The pull rope passes through the hole in the side wall of the installation tube, wraps around the suspension pulley, and is then connected to the winding machine.

[0011] Preferably, the clamping surface of the clamping part of the clamping arm is provided with a serrated edge and an anti-slip layer.

[0012] Preferably, the aforementioned suspended fixed pulley is fixedly connected to the support frame via a wheel frame.

[0013] A method for using an auxiliary device for borehole charging includes the following steps:

[0014] Step 1: Set the support frame on the working surface around the borehole and ensure that the elastic sealing ring seals the borehole.

[0015] Step 2: Using a suspended pulley, a clamping mechanism is driven by a suspension hose and a counterweight ball to clamp the emulsion explosive strip through a guide tube and into the borehole;

[0016] Step 3: Use a vacuum cleaner to draw a vacuum through the cavity inside the support frame to maintain negative pressure in the blast hole;

[0017] Step 4: Continue to lower the emulsion explosive strip to the designed position until the loading is complete.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1) The present invention includes a support frame and a guide tube. A suspension pulley is installed above the guide tube. This structure protects the borehole wall and prevents gravel from falling into the borehole, causing the borehole to jam and affecting the loading of explosives. In addition, an anti-static layer is laid inside the guide tube to prevent electric detonators and other devices from being damaged by static interference.

[0020] 2) An elastic sealing ring is installed around the perimeter of the support frame near the blast hole. The cavity inside the support frame is connected to the blast hole. The top of the support frame is connected to a vacuum cleaner through a vacuum pipe. This design has a sealing effect on the blast hole, preventing gravel from falling into the blast hole and causing it to get stuck. At the same time, the vacuum cleaner sucks away the dust in the blast hole and creates a negative pressure environment by drawing a vacuum in the blast hole, which helps to speed up the loading speed and improve the loading efficiency.

[0021] 3) The clamping mechanism of the present invention is installed below the suspension hose by a counterweight ball. The counterweight ball is conducive to the directional movement of the clamping mechanism and avoids it from swaying left and right in the borehole and colliding with the borehole wall, causing loose stones to fall and jam the hole, which would affect the loading of explosives. At the same time, under the action of gravity, the movement speed of the clamping mechanism is accelerated.

[0022] 4) The clamping mechanism includes an installation tube, clamping arms, a compression spring, and a pull rope. The pull rope passes through the hole in the side wall of the installation tube, winds around a fixed pulley, and is then connected to the winding machine. When it is necessary to release the clamping arms, the pull rope is pulled manually to release one of the clamping arms, thus releasing the clamping mechanism. The operation is convenient and reliable, reducing the labor intensity of the operators. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the clamping mechanism of the present invention;

[0025] The diagram is labeled as follows: 1. Fixed frame, 2. Suspension pulley, 3. Guide tube, 4. Elastic sealing ring, 5. Blast hole, 6. Cavity, 7. Vacuum cleaner, 8. Clamping mechanism, 801. Mounting tube, 802. Clamping arm, 803. Compression spring, 804. Pull rope, 9. Antistatic layer, 10. Suspension hose, 11. Counterweight ball, 12. Emulsion explosive strip, 13. Wheel frame. Detailed Implementation

[0026] The present invention will be further explained and described below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0027] Example 1

[0028] like Figure 1-2As shown, an auxiliary device for loading explosive charges into a borehole includes a support frame 1, a suspension pulley 2, a guide tube 3, an elastic sealing ring 4, a vacuum cleaner 7, a clamping mechanism 8, an anti-static layer 9, a suspension hose 10, a counterweight ball 11, and a wheel frame 13.

[0029] The guide tube 3 is located in the middle of the support frame 1 to protect the borehole wall 5 and the emulsion explosive strip 12. The diameter of the guide tube 3 is 2-3 cm smaller than the diameter of the borehole 5, and there is a sufficient gap between the guide tube 3 and the borehole 5 to allow the electric detonator or detonating cord to pass through, preventing it from being affected by loose rocks on the borehole wall. The guide tube 3 is lined with an anti-static layer 9 to prevent electric detonators and other objects from being damaged by static interference. A suspension pulley 2 is installed above the guide tube 3. The suspension pulley 2 is fixedly connected to the support frame 1 by a wheel frame 13. The suspension pulley 2 is wound with a suspension hose 10. One end of the suspension hose 10 is connected to the sealing part at the upper end of the emulsion explosive strip 12 through a clamping mechanism 8, and the other end is connected to a winding machine.

[0030] The winding machine uses a suspended fixed pulley 2 and a clamping mechanism 8 to insert the emulsion explosive strip 12 from the guide tube 3 into the blast hole 5. This structure provides a certain degree of protection for the blast hole 5, effectively preventing gravel from the working face and loose stones from the upper part of the blast hole 5 from falling into the blast hole 5 and causing jamming.

[0031] Furthermore, an elastic sealing ring 4 is installed around the perimeter of the support frame 1 near the blast hole 5. The elastic sealing ring 4 is a double-ring seal. The cavity 6 inside the support frame 1 connects to the blast hole 5, and the top of the support frame 1 is connected to a vacuum cleaner 7 via a vacuum pipe. The support frame 1 and the elastic sealing ring 4 provide a sealing effect for the blast hole 5, preventing gravel from falling into the blast hole 5 and causing it to become stuck. In addition, the vacuum cleaner 7 removes dust from the blast hole 5 through the cavity 6 inside the support frame 1 and creates a negative pressure environment in the blast hole 5, which helps to speed up the loading process and improve loading efficiency.

[0032] Furthermore, a counterweight ball 11 is fixedly connected to the inner end of the suspension hose 10, and a clamping mechanism 8 is installed at the bottom of the counterweight ball 11. The counterweight ball 11 facilitates the directional movement of the clamping mechanism 8 and prevents it from swaying left and right in the borehole 5 and colliding with the borehole 5 wall.

[0033] Furthermore, the clamping mechanism 8 includes a mounting tube 801, clamping arms 802, a compression spring 803, and a pull rope 804. Three clamping arms 802 are hinged to the bottom opening of the mounting tube 801. The three clamping arms 802 are evenly arranged circumferentially. Each clamping arm 802 has an inwardly bent clamping part at its lower part, and the clamping part faces the radial direction of the mounting tube 801. The clamping surface of the clamping part is provided with a serrated shape and an anti-slip layer to increase friction and prevent slippage during clamping movement. The upper part of the clamping arm 802 is provided with... The drive arm is located inside the mounting tube 801 and its end is fixedly connected to a compression spring 803. Three compression springs 803 keep the three clamping arms 802 in a clamping state. A pull rope 804 is fixedly connected to the end of the drive arm of one of the clamping arms 802. The pull rope 804 passes through a hole in the side wall of the mounting tube 801, winds around a suspension pulley 2, and then connects to the winding machine. When it is necessary to release the clamping arm 802, the pull rope 804 is manually pulled, causing one of the clamping arms 802 to release, thus releasing the clamping mechanism 8. This structure is convenient and reliable to operate, reduces the labor intensity of operators, and improves the efficiency of loading.

[0034] Example 2

[0035] A method of using an auxiliary device for borehole charging, applicable to the aforementioned auxiliary device for borehole charging, includes the following steps:

[0036] Step 1: Set the support frame 1 on the working surface around the borehole 5, and ensure that the elastic sealing ring 4 seals the borehole 5.

[0037] Step 2: Using the suspension pulley 2, the clamping mechanism 8 is driven by the suspension hose 10 and the counterweight ball 11 to clamp the emulsion explosive strip 12 and enter the borehole 5 through the guide tube 3;

[0038] Step 3: Use the vacuum cleaner 7 to draw a vacuum through the cavity 6 inside the support frame 1 to the borehole 5 to maintain a negative pressure.

[0039] Step 4: Continue to lower the emulsion explosive strip 12 to the designed position, to the set position for loading. Manually pull the pull rope 804 to release one of the clamping arms 802, thereby releasing the clamping mechanism 8. Lift the clamping mechanism 8 upwards to complete the loading.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An auxiliary device for loading explosives into a borehole, characterized in that, The system includes a support frame (1), a guide tube (3) in the middle of the support frame (1), a suspension pulley (2) above the guide tube (3), a suspension hose (10) wound around the suspension pulley (2), one end of the suspension hose (10) is connected to the sealing part of the upper end of the emulsion explosive strip (12) through a clamping mechanism (8), and the other end is connected to a winding machine; a counterweight ball (11) is fixedly connected to the inner end of the suspension hose (10), and the clamping mechanism (8) is installed at the bottom of the counterweight ball (11); An elastic sealing ring (4) is provided around the support frame (1) near the blast hole (5). The elastic sealing ring (4) is a double ring seal. The cavity (6) inside the support frame (1) is connected to the blast hole (5). The top of the support frame (1) is connected to a vacuum cleaner (7) through a vacuum pipe. The clamping mechanism (8) includes an installation tube (801), clamping arms (802), compression springs (803), and pull ropes (804). Three clamping arms (802) are hinged at the bottom opening of the installation tube (801). The three clamping arms (802) are evenly arranged circumferentially. Each clamping arm (802) has an inwardly bent clamping part at the lower part, and the clamping part faces the radial direction of the installation tube (801). The driving arm provided on the upper part of the clamping arm (802) is located inside the installation tube (801) and the end is fixedly connected to a compression spring (803). The three compression springs (803) can keep the three clamping arms (802) in a clamping state. The end of the driving arm of one of the clamping arms (802) is fixedly connected to a pull rope (804). The pull rope (804) passes through the side wall hole of the installation tube (801), winds around the suspension pulley (2), and is then connected to the winding machine.

2. The auxiliary device for loading explosive charges into boreholes according to claim 1, characterized in that, The diameter of the guide tube (3) is 2-3 cm smaller than the diameter of the borehole (5), and an antistatic layer (9) is laid inside the guide tube (3).

3. The auxiliary device for borehole charging according to claim 1, characterized in that, The clamping surface of the clamping part of the clamping arm (802) is provided with a serrated shape and an anti-slip layer.

4. The auxiliary device for loading explosive charges into boreholes according to claim 1, characterized in that, The suspended fixed pulley (2) is fixedly connected to the support frame (1) via the wheel frame (13).

5. A method of using an auxiliary device for borehole charging, applied to an auxiliary device for borehole charging as described in any one of claims 1-4, characterized in that, Includes the following steps: Step 1: Set the support frame (1) on the working surface around the blast hole (5) and ensure that the elastic sealing ring (4) seals the blast hole (5); Step 2: Using the suspension pulley (2), the clamping mechanism is driven by the suspension hose (10) and the counterweight ball to clamp the emulsion explosive strip (12) and enter the borehole (5) through the guide tube (3); Step 3: Use a vacuum cleaner (7) to draw a vacuum through the cavity (6) inside the support frame (1) to the borehole (5) to maintain a negative pressure; Step 4: Continue to place the emulsion explosive strip (12) down to the designed position until the loading is complete.

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