Blasting positioning device for strip mine

Abstract

The strip mine blasting positioning device comprises a bottom plate, a threading through hole is formed in the bottom plate; a plurality of supporting rods are rotationally arranged on the lower side of the bottom plate; friction pads are arranged at the ends, away from the bottom plate, of the supporting rods; anti-skid raised lines are arranged on the outer sides of the friction pads; a connecting column is slidably arranged in the middle of the lower side of the bottom plate. A spring is arranged in the middle of the supporting rod towards the connecting column; a plurality of fixing rods are circumferentially arranged on the upper side of the bottom plate close to the edge at equal intervals; binding belts are connected between the multiple fixing rods. A plurality of binding belts can be arranged according to use requirements. After the device enters a blast hole, the spring pushes the supporting rod to enable the friction pad to be attached to the inner wall of the blast hole, the whole blasting charge and the device are clamped at the designated position in the blast hole, downward pressing force is provided through the gravity of the blasting charge and the gravity of the device, and the downward pressing force is transmitted to the friction pad through the supporting rod; and the friction effect of the friction pad can be improved when the pressure is higher, fixation is firmer, and the conditions of deviation, falling off and the like cannot occur in the blasting process.

Description

Technical Field

[0001] The utility model belongs to the field of blasting auxiliary devices, in particular to an open-pit mine blasting positioning device. Background Art

[0002] Open-pit mining has become the main mining method in the mining industry due to its advantages of high efficiency, low cost and high resource recovery rate. For enterprises, choosing open-pit mining also has significant economic benefits, development prospects and environmental protection significance.

[0003] In order to recover the hidden danger resources left by underground mines, it is inevitable to encounter small empty areas and blind empty areas in local areas. For the empty areas under the open-pit mine, it is necessary to carry out preliminary centralized management of large empty areas and empty area groups before switching to full open-pit mining to achieve macro open-pit mining environment reconstruction. Due to the continuous changes in the shape of the empty areas, it brings great technical difficulties to the blasting operation. It is mainly manifested in: first, the direction and size of the free surface are unpredictable; second, the local charge is difficult to accurately calculate; third, how to accurately locate the charge has become a problem.

[0004] Although the positioning of blasting charges has been basically achieved through the application of gas spacers, which effectively improves the energy utilization rate of explosives and reduces the unit consumption of explosives, due to the insufficient positioning accuracy of gas spacers, it is difficult to adjust and correct the positioning in actual operations, and the precision blasting effect is unsatisfactory. It is urgent to find a practical solution. Utility Model Content

[0005] The utility model aims to provide an open-pit mine blasting positioning device to recover residual ore resources left behind by underground mining, solve the hidden dangers of empty areas left behind by underground mining, and provide technical solutions for safety protection of subsequent blasting operations.

[0006] In order to achieve the above-mentioned purpose, the specific technical scheme of the open-pit mine blasting positioning device of the utility model is as follows:

[0007] An open-pit mine blasting positioning device comprises a base plate; a through hole for threading is arranged on the base plate; a plurality of support rods are rotatably arranged on the lower side of the base plate; a friction pad is arranged on the end of the support rod away from the base plate; an anti-skid convex strip is arranged on the outer side of the friction pad; a connecting column is slidably arranged in the middle of the lower side of the base plate; a spring is arranged in the middle of the support rod toward the connecting column; a plurality of fixing rods are equidistantly arranged in the circumferential direction near the edge position on the upper side of the base plate; binding belts are arranged to connect the plurality of fixing rods; and a plurality of binding belts can be arranged according to usage requirements.

[0008] Furthermore, the upper edge of the friction pad is an arc-shaped edge.

[0009] Furthermore, the upper edge of the anti-slip convex strip is an arc-shaped edge.

[0010] Furthermore, the spring is arranged to be inclined toward the bottom plate away from one end of the support rod.

[0011] Furthermore, a hanging ring is provided at the lower side of the connecting column; and a traction rope is provided at the lower side of the hanging ring.

[0012] The open-pit mine blasting positioning device of the utility model has the following advantages: when encountering a horizontal blast hole or a blast hole inclined downward and needing to be blasted, in order to prevent the blasting bag from being displaced and moved when inserted into the blast hole, the blasting bag is fixed to the device by a fixing rod and a plurality of binding straps, and then one end of the fixing rod of the device and the blasting bag are inserted into the blast hole. When the bottom plate and the position below the device enter the blast hole, the spring pushes the support rod to fit the friction pad to the inner wall of the blast hole, and the entire blasting bag and the device are stuck in the blast hole. The gravity of the blasting bag and the device itself is used to provide a downward pressure, and the downward pressure is transmitted to the friction pad position by the support rod, so that the greater the pressure, the greater the friction effect of the friction pad is, so that the blasting bag The bag is fixed in the blasthole more firmly and will not move or deflect during the blasting process, nor will it fall off from the blasthole, which helps to ensure that the energy generated by the explosion can be accurately positioned to act on the rock at the predetermined position, thereby increasing the accuracy of blasting. The operation process is simple and convenient, with low learning costs and a wide range of applications, which can further improve construction efficiency. The upper edges of the friction pad and the anti-slip convex strip are arc-shaped edges. In the process of placing the device in the blasthole, the arc-shaped upper edge can effectively reduce the friction between the friction pad of the device and the inner wall of the blasthole, thereby facilitating the installation of the blasting bag. When facing outward in the opposite direction, it can effectively provide a higher friction force for the friction pad to prevent the blasting bag and the device from falling out of the blasthole. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is an enlarged schematic diagram of area A of the present utility model;

[0015] Explanation of markings in the figure: 1. Base plate; 101. Threading hole; 2. Support rod; 3. Friction pad; 4. Anti-slip convex strip; 5. Connecting column; 6. Spring; 7. Fixing rod; 8. Binding belt; 9. Hanging ring; 10. Towing rope. DETAILED DESCRIPTION

[0016] In order to better understand the purpose, structure and function of the utility model, the open-pit mine blasting positioning device of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1-2As shown, the utility model open-pit mine blasting positioning device includes a base plate 1; a threading through hole 101 is arranged on the base plate 1; a plurality of support rods 2 are rotatably arranged on the lower side of the base plate 1; a friction pad 3 is arranged at one end of the support rod 2 away from the base plate 1; an anti-slip convex strip 4 is arranged on the outer side of the friction pad 3; a connecting column 5 is slidably arranged in the middle of the lower side of the base plate 1; a spring 6 is arranged in the middle of the support rod 2 toward the connecting column 5; a plurality of fixing rods 7 are equidistantly arranged circumferentially near the edge position on the upper side of the base plate 1; binding belts 8 are connected between the plurality of fixing rods 7; and a plurality of binding belts 8 can be arranged according to usage requirements.

[0018] Combination Figure 1-2 As shown, in the process of underground mine conversion, in order to improve mining efficiency and adapt to complex terrain and geological conditions. When encountering a horizontal blasthole or a blasthole inclined downward that needs to be blasted, in order to avoid the blasting package being offset when inserted into the blasthole, the blasting package is fixed to the device through a fixing rod 7 and a plurality of binding straps 8, and the detonating wire is passed through the threading hole 101, and then one end of the fixing rod 7 of the device and the blasting package are inserted into the blasthole. When the bottom plate 1 and the position below the device enter the blasthole, the spring 6 pushes the support rod 2 to fit the friction pad 3 to the inner wall of the blasthole, and the entire blasting package and the device are stuck in the blasthole, and the blasting package is used. The gravity of the bag and the device itself provides the downward force, and the downward force is transmitted to the position of the friction pad 3 by the support rod 2, so that the greater the pressure, the greater the friction effect of the friction pad 3, so that the blasting bag is fixed more firmly in the blasthole, and will not move or deflect during the blasting process, and will not fall off from the blasthole, which helps to ensure that the energy generated by the explosion can accurately act on the rock at the predetermined position, increase the blasting accuracy, and the operation process is simple and convenient, the learning cost is low, and the application range is wide, which can further improve the construction efficiency.

[0019] The upper edge of the friction pad 3 is an arc-shaped edge, and the upper edge of the anti-skid convex strip 4 is an arc-shaped edge. The upper edges of the friction pad 3 and the anti-skid convex strip 4 are arc-shaped edges. In the process of placing the device into the blast hole, the arc-shaped upper edge can effectively reduce the friction between the friction pad 3 of the device and the inner wall of the blast hole, which is convenient for installing the blasting charge. When facing outward in the opposite direction, the friction pad 3 and the anti-skid convex strip 4 can effectively provide a higher friction force for the friction pad 3 to prevent the blasting charge and the device from escaping from the blast hole.

[0020] The spring 6 is arranged at an angle away from one end of the support rod 2 toward the bottom plate 1. When the device and the blasting charge are arranged in a blast hole inclined downward, the downward pressure is transmitted to the position of the friction pad 3 by the support rod 2, thereby increasing the friction between the friction pad 3 and the inner wall of the blast hole and increasing the fixing effect of the device. The spring 6 arranged at an angle toward the bottom plate 1 provides an oblique upward thrust for the support rod 2 to the connecting column 5, thereby preventing the connecting column 5 from sliding down.

[0021] A hanging ring 9 is provided at the lower side of the connecting column 5; a traction rope 10 is provided at the lower side of the hanging ring 9. When the blasting charge and the device are installed in the blast hole, when it is necessary to take out the blasting charge or to inspect the detonating cord, the traction rope 10 provided on the hanging ring 9 is pulled, and the hanging ring 9 drives the connecting column 5 to slide, and at the same time stretches the spring 6 so that the spring 6 no longer provides thrust for the support rod 2. The spring 6 pulls the support rod 2 back, and the friction pad 3 no longer fits the inner wall of the blast hole, so that the device and the blasting charge are pulled out for inspection.

[0022] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. Open-pit mine blasting positioning device, characterized in that: The invention comprises a bottom plate (1); a threading through hole (101) is arranged on the bottom plate (1); a plurality of support rods (2) are rotatably arranged on the lower side of the bottom plate (1); a friction pad (3) is arranged at one end of the support rod (2) away from the bottom plate (1); an anti-slip convex strip (4) is arranged on the outer side of the friction pad (3); a connecting column (5) is slidably arranged in the middle of the lower side of the bottom plate (1); a spring (6) is arranged in the middle of the support rod (2) toward the connecting column (5); a plurality of fixing rods (7) are equidistantly arranged in the circumferential direction near the edge of the upper side of the bottom plate (1); a binding belt (8) is arranged between the plurality of fixing rods (7); and a plurality of the binding belts (8) can be arranged according to the use requirements.

2. The open-pit mine blasting positioning device according to claim 1, characterized in that: The upper edge of the friction pad (3) is an arc-shaped edge.

3. The open-pit mine blasting positioning device according to claim 1, characterized in that: The upper edge of the anti-slip convex strip (4) is an arc-shaped edge.

4. The open-pit mine blasting positioning device according to claim 1, characterized in that: The spring (6) is arranged with one end away from the support rod (2) tilted toward the bottom plate (1).

5. The open-pit mine blasting positioning device according to claim 1, characterized in that: A hanging ring (9) is arranged at the lower side of the connecting column (5); and a traction rope (10) is arranged at the lower side of the hanging ring (9).

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