CN205138349U - Spring contraction type detonator big gun line fixing device - Google Patents

Abstract

The utility model discloses a spring retractable detonator gun line fixing device, which comprises a sleeve and an elastic expansion device compressed in the sleeve; the elastic expansion device includes a central rod and is fitted on the The sliding sleeve of the fixed rod; the central rod is axially provided with a through hole for the gun wire to pass through; the fixed rod is hinged on the central rod to be embedded in the inner wall of the blast hole; the fixed rod and the sliding sleeve There is a support rod for stretching the fixed rod hinged between them; a spring driving the sliding sleeve to slide is arranged on the central rod. The detonator is detonated, causing a safety accident. In addition, it has the characteristics of safety (anti-blind shot, anti-collision) and high efficiency (sealing the hole, sealing the hole).

Description

Spring retractable detonator wire fixing device

technical field

The utility model relates to the field of blasting equipment, in particular to a spring retractable detonator wire fixing device.

Background technique

At present, when the drill and blast method is used to excavate the roadway, blind shots sometimes occur. The method for dealing with blind guns is to drill a parallel blind gun hole at a certain distance (such as 0.3 meters) from the blind gun, and this blast hole is considered to be a row blind gun hole. Detonate after charging the charge in the bore of the blind gun, and detonate the detonator and explosives in the bore of the blind gun. But when drilling the blasthole of the blind gun, the drill bit may be drilled on the detonator or the explosive in the blind gun, causing the detonator and the explosive to explode, causing a safety accident. The reason for this kind of accident is that when drilling the blast hole of the blind gun, the direction of the blast hole of the blind gun may not be known, and it may be difficult to grasp the direction of the blind gun hole because there is no guide device. The marking rod of the blasthole guide device of the blind blaster must be inserted into the blasthole of the blind blaster to a sufficient depth so that the blasthole guide device of the blind row cannon can play its guiding role. Pull out enough mud from the blast hole of the blind gun. When taking out the blasting mud in the blind gun, the gun mud or the gun line in the blind gun hole may move, that is, the gun mud or the gun line will move inward, which will cause the detonator to detonate. After the detonator is detonated, it may also cause the explosive to explode. , resulting in safety accidents. In addition, after charging, in order to improve the blasting efficiency, the blasting mud is often compacted. In this way, the blasting mud or the blasting line moves from the blasthole hole to the bottom of the blasthole, that is, the blasting mud or the blasting line moves inward. The detonator may be detonated, thereby detonating the explosive, and a safety accident occurs.

Therefore, in order to solve the above problems, there is a need for a spring retractable detonator wire fixing device installed between the explosive, the detonator and the gun mud. After the detonator and explosives are installed, install this spring retractable detonator wire fixing device before caulking, and then caulking. After the device is installed, the detonator and the explosive will not be affected by the inward or outward movement of the gun mud and the gun wire, and the detonator will not detonate due to the inward or outward movement of the gun mud and the gun wire.

Utility model content

In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide a detonator wire fixing device that can fix the gun wire and the inner wall of the blast hole to avoid detonation of the detonator after the gun wire outside the blast hole is pulled.

The spring retractable detonator wire fixing device of the utility model includes a sleeve and an elastic expansion device compressed in the sleeve; the elastic expansion device includes a central rod and a shaft that is fitted to the fixed rod in an axially sliding manner. Sliding sleeve; the central rod is axially provided with a through hole for the gun wire to pass through; the central rod is hinged with a fixed rod for embedding the inner wall of the blasthole; the fixed rod is hinged with the sliding sleeve There is a support rod for stretching the fixed rod; the central rod is provided with a spring that drives the sliding sleeve to slide;

Further, the outer end of the fixed rod is provided with a serrated claw;

Further, the outer end of the central rod is provided with a fixed sleeve, and the fixed rod is hinged to the fixed sleeve;

Further, the outer diameter of the sleeve is smaller than the inner diameter of the blast hole;

Further, the spring is stretched between the fixed sleeve and the sliding sleeve.

The beneficial effects of the utility model are: the spring retractable detonator gun line fixing device of the utility model, the elastic expansion device is compressed and placed in the sleeve, when the explosive and the detonator are installed in the blasthole, the sleeve is extended into the detonator in the blasthole Then use a tool such as a thin straight rod to push the elastic element out of the sleeve, and the spring will drive the sliding sleeve to slide inward, so that the fixing rod will be rapidly expanded, so that the elastic expansion device is fixed in the blast hole, and finally the gun line is fixed. , even if it is pulled by external force, it will not easily pull the gun wire inside the detonator gun wire fixing device, thus ensuring the safety and reliability of the detonator. The detonator gun wire fixing device can fix the gun wire and the inner wall of the blast hole to avoid The detonator detonates after the gun wire is pulled, causing a safety accident. On the other hand, because the utility model separates the explosive, the detonator and the gun mud, no matter how big the force is when the blasthole is compacted, the detonator and the explosive will not be detonated. , so the clay can be compacted more tightly, thereby improving the blasting efficiency. Furthermore, the utility model can strengthen the strength of the hole sealing, thereby improving the blasting efficiency and greatly improving the safety of the blasthole charging operation.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the structural representation of the elastic deployment device of the present utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a schematic structural view of the sleeve of the present invention.

detailed description

Fig. 1 is a schematic structural view of the elastic deployment device of the present utility model; Fig. 2 is a top view of Fig. 1; Fig. 3 is a schematic structural view of the sleeve 7 of the present utility model, as shown in the figure, the spring 5 retractable detonator of the present embodiment The gun line 6 fixing device includes a sleeve 7 and an elastic expansion device compressed in the sleeve 7; the elastic expansion device includes a central rod 3 and a sliding sleeve that is fitted to the fixed rod 9 in an axially sliding manner 2; the central rod 3 is axially provided with a via hole for the gun wire 6 to pass through; the central rod 3 is hinged with a fixed rod 9 for embedding the inner wall of the blast hole; the fixed rod 9 is connected with the sliding sleeve 2 is hinged with a support rod 10 for stretching the fixed rod 9; the central rod 3 is provided with a spring 5 driving the sliding sleeve 2 to slide; the elastic expansion device is compressed and placed in the sleeve 7, when the blasthole is installed After the explosives and the detonator are finished, the sleeve 7 is inserted into the detonator in the blast hole, and then the elastic element is pushed out of the sleeve 7 by using tools such as thin straight rods, and the spring 5 will drive the sliding sleeve 2 to slide inward, so that the fixed rod 9 Rapid deployment, so that the elastic deployment device is fixed in the blast hole, and finally the gun wire 6 is fixed. Even if it is pulled by an external force, the gun wire 6 inside the detonator gun wire 6 fixing device will not be easily pulled, thereby ensuring the detonator. It is safe and reliable. The detonator gun wire 6 fixing device can fix the gun wire 6 and the inner wall of the blast hole, so as to prevent the gun wire 6 outside the blast hole from being pulled and cause the detonator to detonate, causing a safety accident. On the other hand, because the utility model uses the explosive , The detonator and the gun mud are separated, so no matter how much force is used when the blasthole is compacted, the detonator and the explosive will not be detonated. Therefore, the gun mud can be pressed more tightly, thereby improving the blasting efficiency. Furthermore, the utility model can strengthen the strength of the hole sealing, thereby improving the blasting efficiency and greatly improving the safety of the blasthole charging operation.

In this embodiment, the outer end of the fixed rod 9 is provided with a serrated claw 8. Because the inner wall of the blasthole is hard, it is sometimes difficult to embed the outer end of the fixed rod 9 into the inner wall of the blasthole. The serrated claw 8 makes the outer end of the fixed rod 9 sharper, making the It is easier to insert into the inner wall of the blasthole to fix it.

In this embodiment, the outer end of the central rod 3 is provided with a fixed sleeve 1, and the fixed rod 9 is hinged to the fixed sleeve 1; the fixed sleeve 1 can be welded or bolted to the outer end of the central rod 3.

In this embodiment, the outer diameter of the sleeve 7 is smaller than the inner diameter of the blasthole; it is convenient to insert the device into the blasthole smoothly.

In this embodiment, the spring 5 is stretched between the fixed sleeve 1 and the sliding sleeve 2. When the elastic expansion device slides out of the sleeve 7, the spring 5 will pull the sliding sleeve 2 to slide into the borehole, and then quickly Stretch the fixed rod 9 and fix it in the blast hole so that the blast wire 6 is fixed, even if it is pulled by an external force, it will not easily pull the blast wire 6 inside the detonator gun wire 6 fixing device, thereby ensuring the safety of the detonator ,reliable.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (5)

1. a spring contraction formula detonator big gun line fixture, is characterized in that: comprise sleeve and be compressed in the elasticity expanding unit in described sleeve; Described elasticity expanding unit comprises center-pole and is matched with the sliding sleeve of fixed bar in the mode slid axially; The via hole for making big gun line pass is provided with vertically in described center-pole; Described center-pole is hinged with the fixed bar for embedding borehole inwall; The support bar for being strutted by fixed bar is hinged with between described fixed bar and sliding sleeve; Described center-pole is provided with the spring driving sliding sleeve to slide.

2. spring contraction formula detonator big gun line fixture according to claim 1, is characterized in that: described fixed bar outer end is provided with sawtooth pawl.

3. spring contraction formula detonator big gun line fixture according to claim 2, is characterized in that: described center-pole outer end is provided with fixed muffle, and described fixed bar is articulated with this fixed muffle.

4. spring contraction formula detonator big gun line fixture according to claim 3, is characterized in that: described sleeve outer diameter is less than big gun hole internal diameter.

5. spring contraction formula detonator big gun line fixture according to claim 4, is characterized in that: described spring elongation is between fixed muffle and sliding sleeve.