Clamping groove for pre-split hole

Abstract

According to the clamping groove for the pre-split hole, the charging operation is achieved in the mode that the charging clamping groove is matched with the reinforcing clamping groove, meanwhile, the inner buckles are arranged on the inner sides of the two clamping grooves, and the loading stability of cartridges is further improved. Compared with traditional bundling type explosive charging, manual bundling is not needed any more, the explosive charging efficiency is improved, and the device is suitable for industrial large-scale use and popularization.

Description

Technical Field

[0001] The utility model belongs to the field of open-pit mine pre-splitting blasting, in particular to a clamping groove for pre-splitting holes. Background Art

[0002] Pre-splitting blasting is a common blasting method for developing and protecting the sidewalls of open-pit mines. Pre-splitting blasting uses an uncoupled charging method. The traditional charging method is to tie the explosive rolls and detonating cords to bamboo strips according to the design requirements and then place them in the blasthole. During the construction process, tape is needed to firmly tie the explosive rolls, detonating cords and bamboo strips, which is troublesome to construct.

[0003] The prior art lacks a convenient device for pre-splitting charge. For example, on rainy days, the viscosity of the tape decreases when it comes into contact with water, which can easily lead to loose bundling. Bamboo strips are natural organic materials and are not resistant to storage. During construction, bamboo strips that have been stored for a long time often break and have burrs around them. Workers need to wear gloves during construction, which affects work efficiency. Utility Model Content

[0004] The utility model aims to provide a pre-splitting hole clamping groove to solve the problems of weak charging and low charging efficiency in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A slot for pre-splitting includes a charging slot and a reinforcing slot, both of which are U-shaped; both sides of the openings of the charging slot and the reinforcing slot are provided with inward buckle edges.

[0007] The charge slot is fixedly connected to the bottom of the reinforcement slot and the slots of the two slots are communicated.

[0008] The utility model also has the following features:

[0009] Furthermore, threaded holes are provided at the connection between the charge slot and the bottom of the reinforcement slot;

[0010] The charge slot and the reinforcement slot are fixedly connected via a threaded connector matching the threaded hole.

[0011] Furthermore, the length of the charging slot is 5m, the height is 33mm, and the slot width is 32mm;

[0012] The length of the reinforced slot is 1.5m, the height is 91mm, and the width of the slot is 90mm.

[0013] Furthermore, the thickness of the charging slot and the reinforcement slot are both 3 mm.

[0014] Furthermore, through connecting holes are provided on the outer walls of the charging slot on both sides away from one end of the reinforcing slot; the hole diameter of the connecting hole is 5 mm;

[0015] The charge slot can be connected to an external detonating cord head through a connecting hole.

[0016] Compared with the prior art, the utility model has the following technical effects:

[0017] The pre-splitting slot of the utility model realizes the charging operation by cooperating with the charging slot and the reinforcing slot. At the same time, inner buckles are arranged on the inner sides of the two slots, which further improves the loading stability of the medicine roll. Compared with the traditional bundling charging, this setting no longer requires manual bundling, improves the charging efficiency, and is suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the pre-splitting hole slot of the utility model;

[0019] Figure 2 It is a left view of the pre-splitting hole slot of the utility model;

[0020] Figure 3 It is a top view of the clamping slot for pre-splitting holes of the utility model.

[0021] The meanings of the numbers in the figure are: 1. Charge slot; 2. Reinforcement slot; 3. Inner buckle; 4. Connection hole. DETAILED DESCRIPTION

[0022] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art.

[0023] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0024] A pre-cracked hole slot, such as Figure 1-3 As shown, it includes a charging slot 1 and a reinforcement slot 2, both of which are "U"-shaped; both sides of the openings of the charging slot 1 and the reinforcement slot 2 are provided with inward buckle edges 3;

[0025] The charge slot 1 is fixedly connected to the bottom of the reinforcement slot 2 and the slots of the two are in communication.

[0026] According to conventional selection in the field, both the charging slot 1 and the reinforcement slot 2 are made of PVC material, and the U-shaped slot opening is convenient for carrying explosive rolls. In addition, inward buckle edges 3 are provided on both sides of the openings of the charging slot 1 and the reinforcement slot 2 to ensure that the explosive roll is not easy to fall out after being placed in the charging slot 1 and the reinforcement slot 2. The size of the inward elastic force of the charging slot 1 and the reinforcement slot 2 should ensure that the outer packaging of the explosive roll is not damaged, the explosive roll can be pressed in freely, and the friction force generated by the elastic force in the slot can inhibit the axial sliding of the explosive roll. Compared with the traditional bundling charging, this setting no longer requires manual bundling, improves the charging efficiency, and is suitable for large-scale use and promotion in industry.

[0027] Specifically, two corresponding threaded holes are provided at the connection between the charging slot 1 and the bottom of the reinforcing slot 2;

[0028] The charge slot 1 and the reinforcement slot 2 are fixedly connected via a threaded connector.

[0029] Specifically, the length of the charge slot 1 is 5m, the height is 33mm, and the slot width is 32mm;

[0030] The length of the reinforced slot 2 is 1.5m, the height is 91mm, and the slot width is 90mm.

[0031] The thickness of the charge slot 1 and the reinforcement slot 2 are both 3 mm.

[0032] Specifically, the outer walls of the charging slot 1 on both sides away from the reinforcing slot 2 are provided with through connection holes 4; the hole diameter of the connection hole 4 is 5 mm;

[0033] The charge slot 1 can be connected to the external detonating cord head through the connecting hole. The detonating cord head is passed through the connecting hole 4 of the charge slot 1 and then tied to prevent the detonating cord from falling off when stretched. The detonating cord is placed at the bottom of the charge slot 1, and the cord is pressed into the corresponding charge slot 1 or the reinforcement slot 2 according to the cord spacing distance determined by the designed pre-splitting blasting line charge density to complete the pre-splitting hole charge.

Claims

1. A pre-crack slot, characterized in that: It comprises a medicine loading slot (1) and a reinforcement slot (2), wherein the medicine loading slot (1) and the reinforcement slot (2) are both "U"-shaped; both sides of the openings of the medicine loading slot (1) and the reinforcement slot (2) are provided with inward buckle edges (3); The charge slot (1) is fixedly connected to the bottom of the reinforcement slot (2), and the slots of the two slots are in communication.

2. A pre-crack hole slot as claimed in claim 1, characterized in that: The connection between the charging slot (1) and the bottom of the reinforcement slot (2) is provided with a threaded hole; The charge slot (1) and the reinforcement slot (2) are fixedly connected via a threaded connector that matches the threaded hole.

3. A pre-crack hole slot as claimed in claim 1, characterized in that: The length of the charging slot (1) is 5m, the height is 33mm, and the slot width is 32mm; The reinforced slot (2) has a length of 1.5 m, a height of 91 mm, and a slot width of 90 mm.

4. A pre-crack hole slot as claimed in claim 3, characterized in that: The thickness of the charge slot (1) and the reinforcement slot (2) are both 3 mm.

5. A pre-crack hole slot as claimed in claim 4, characterized in that: Through connecting holes (4) are provided on the outer walls of the two opposite sides of the charge slot (1) away from one end of the reinforcement slot (2); the hole diameter of the connecting hole (4) is 5 mm; The charge slot (1) can be connected to an external detonating cord head via a connecting hole.

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