Primer for on-site mixed loading of drift tunneling blast holes

Abstract

The utility model relates to the technical field of blasting materials, in particular to a detonating tool for on-site mixed loading of a roadway tunneling blast hole. Comprising a cylindrical shell, and a cylindrical groove is coaxially formed in one end of the cylindrical shell; the detonator loading groove is formed in the bottom of the cylindrical groove and is used for loading a detonator; the circular-truncated-cone-shaped plug is used for plugging the detonator loading groove by being embedded into the cylindrical groove, and a detonating fuse routing hole is formed in the center of the circular-truncated-cone-shaped plug and used for enabling a detonating fuse for detonating a detonator in the detonator loading groove to be routed in the detonating fuse routing hole; and the detonating cord anti-falling mechanism is arranged on the circular-truncated-cone-shaped plug so as to prevent the detonating cord from falling off from the position of the circular-truncated-cone-shaped plug by clamping and fixing the detonating cord. According to the device, the detonator and the detonating cord are fixed through the circular-truncated-cone-shaped plug on the cylindrical shell and the detonating cord anti-falling mechanism on the circular-truncated-cone-shaped plug, the detonator and the detonating cord are prevented from being separated from designated positions, and the problem that detonation cannot be achieved due to the fact that the detonator and the detonating cord are separated from the designated positions is solved.

Description

Technical Field

[0001] This utility model relates to the field of blasting equipment technology, and in particular to a detonator for use in on-site mixed loading of blast holes in horizontal tunnel excavation. Background Technology

[0002] A detonator, also known as a detonating charge, is a blasting device used to detonate insensitive explosives. There are two types of detonators: double-detonator detonators and double-detonating cord detonators. The detonation principle of a detonator is based on the detonation of a detonator inserted into the detonator, which then detonates the low-sensitivity explosive. The detonator amplifies the detonation wave. The detonator's external structure is mainly cylindrical or frustum-shaped, with a through hole for holding the detonator or detonating cord.

[0003] However, in existing detonators, the detonator and detonating cord placed in the detonator shell are prone to detaching from the detonator shell, causing detonation failure. In order to improve this situation, it is necessary to design a detonator for on-site mixed loading of blast holes in horizontal tunnels. Utility Model Content

[0004] The purpose of this invention is to provide a detonator for blast holes used in on-site mixed-loading horizontal tunnel excavation, in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a detonator for use in on-site mixed-loading of blast holes in horizontal tunnel excavation, comprising:

[0007] A cylindrical shell, wherein a cylindrical groove is coaxially formed at one end of the cylindrical shell;

[0008] A detonator loading groove is formed at the bottom of the cylindrical groove for loading a detonator;

[0009] A frustum-shaped plug, used to seal the detonator loading groove by being embedded in the cylindrical groove, has a detonating cord routing hole at its center for the detonating cord to run through the hole to detonate the detonator in the loading groove; and

[0010] A detonating cord anti-detachment mechanism is provided on the frustum-shaped plug to prevent the detonating cord from falling off the frustum-shaped plug by clamping and fixing it.

[0011] Furthermore, the detonator loading groove is formed in two sets at the bottom of the cylindrical groove, and the two sets of detonator loading grooves are symmetrically distributed on both sides of the central axis of the cylindrical groove.

[0012] Furthermore, a receiving groove for avoiding the routing of the detonating cord is provided at the center of the cylindrical groove.

[0013] Furthermore, a routing guide groove for avoiding the detonating cord is provided on one side of the detonator loading groove. The routing guide groove is provided along the extension direction of the detonator loading groove and is connected to the receiving groove.

[0014] Furthermore, the detonating cord anti-detachment mechanism includes two sets of clamping single-arm structures symmetrically arranged on both sides of the frustum-shaped plug. Both sets of clamping single-arm structures simultaneously move towards the detonating cord routing hole to clamp the detonating cord. Each clamping single-arm structure includes:

[0015] A guide hole is radially formed on the side of the frustum-shaped plug and communicates with the detonating cord routing hole.

[0016] A clamping rod is inserted into and slides within the guide hole. An elastic soft head is provided at one end of the clamping rod facing the detonating cord routing hole. When the end of the elastic soft head at one end of the clamping rod moves to be flush with the inner wall of the detonating cord routing hole, the other end of the clamping rod is in a state of extending out of the guide hole.

[0017] A side groove, formed on the side surface of the frustum-shaped plug and communicating with the guide hole; and

[0018] An external elastic sheet has one end connected to the bottom of the side groove and the other end extending upward to the guide hole and elastically bending away from the guide hole. A protruding top is provided on the side of the external elastic sheet facing the guide hole to extend into the guide hole and push the clamping rod to move.

[0019] Furthermore, when the outer elastic sheet is pressed by the inner wall of the cylindrical groove to fully enter the side groove, the side of the outer elastic sheet opposite to the side groove is located outside the side groove to form an interference fit with the inner wall of the cylindrical groove.

[0020] In the above technical solution, the detonator provided by this utility model for on-site mixed loading of blast holes in horizontal tunnels has the following beneficial effects:

[0021] This device secures the detonator and detonating cord by using a frustum-shaped plug on a cylindrical shell and a detonating cord anti-detachment mechanism on the frustum-shaped plug, preventing the detonator and detonating cord from falling out of their designated positions and avoiding the problem of failure to detonate due to the detonator and detonating cord falling out of their designated positions. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the structure of a detonator for on-site mixed loading of blast holes in horizontal tunnels provided in this embodiment of the present utility model;

[0024] Figure 2 A top view of a cylindrical shell of a detonator for on-site mixed loading of blast holes in horizontal tunnels, provided as an embodiment of this utility model;

[0025] Figure 3 A schematic diagram of the outward elastic sheet of the detonator's anti-detachment mechanism for the detonator used in on-site mixed-loading horizontal tunnel excavation blast holes, provided for an embodiment of this utility model, showing the elastic sheet opening outward.

[0026] Figure 4 A top sectional view of a frustum-shaped plug for a detonator used in a blast hole for on-site mixed loading in a horizontal tunnel, provided as an embodiment of this utility model;

[0027] Figure 5 This utility model provides an embodiment of a detonator for on-site mixed loading of blast holes in horizontal tunnel excavation. Figure 1 A magnified view of a portion of the image.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Cylindrical shell; 2. Cylindrical groove; 3. Detonator loading groove; 4. Frustum-shaped plug; 5. Detonating cord routing hole; 6. Receiving groove; 7. Routing guide groove; 8. Guide hole; 9. Clamping rod; 10. Flexible soft head; 11. Side groove; 12. Outwardly expanding elastic sheet; 13. Protruding top head. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] Please see Figure 1-5 A detonator for use in on-site mixed-loading tunnel excavation blast holes, comprising:

[0032] A cylindrical shell 1, with a cylindrical groove 2 coaxially formed at one end of the cylindrical shell 1;

[0033] The detonator loading groove 3 is formed at the bottom of the cylindrical groove 2 for loading the detonator;

[0034] A frustum-shaped plug 4 is used to seal the detonator loading groove 3 by being embedded in a cylindrical groove 2. A detonating cord routing hole 5 is provided at the center of the frustum-shaped plug 4 to allow the detonating cord of the detonator in the detonator loading groove 3 to run through the detonating cord routing hole 5; and

[0035] The detonating cord anti-detachment mechanism is installed on the frustum-shaped plug 4 to prevent the detonating cord from falling off the frustum-shaped plug 4 by clamping and fixing it.

[0036] Specifically, this device uses the detonator loading groove 3 of the cylindrical shell 1 to load the detonator, and uses the frustum-shaped plug 4 to be inserted into the cylindrical groove 2 to seal the detonator and prevent it from falling off. At the same time, the detonating cord anti-detachment mechanism is used to fix the detonating cord, which also prevents the detonating cord from falling off and improves the stability of the detonator.

[0037] Furthermore, the detonator loading groove 3 consists of two sets located at the bottom of the cylindrical groove 2. The two sets of detonator loading grooves 3 are symmetrically distributed on both sides of the central axis of the cylindrical groove 2, so that two sets of detonators can be used simultaneously.

[0038] Furthermore, a receiving groove 6 is provided at the center of the cylindrical groove 2 to avoid the routing of the detonating cord, so that there is enough space to arrange the detonating cord.

[0039] Furthermore, a routing guide groove 7 is provided on one side of the detonator loading groove 3 to avoid the detonating cord routing. The routing guide groove 7 is provided along the extension direction of the detonator loading groove 3 and is connected to the receiving groove 6, so that the detonating cord can avoid the detonator loaded in the detonator loading groove 3 when routing, which makes the arrangement of the detonating cord more convenient.

[0040] Furthermore, the detonating cord anti-detachment mechanism includes two sets of clamping single-arm structures symmetrically arranged on both sides of the frustum-shaped plug 4. Both sets of clamping single-arm structures move simultaneously toward the detonating cord routing hole 5 to clamp the detonating cord. The clamping single-arm structures include:

[0041] The guide hole 8 is radially opened on the side of the frustum-shaped plug 4 and communicates with the detonating cord routing hole 5.

[0042] The clamping rod 9 passes through the guide hole 8 and slides within the guide hole 8. An elastic soft head 10 is provided at one end of the clamping rod 9 facing the detonating cord routing hole 5. When the end of the elastic soft head 10 at one end of the clamping rod 9 moves to be flush with the inner wall of the detonating cord routing hole 5, the other end of the clamping rod 9 is in a state of extending out of the guide hole 8.

[0043] A side groove 11 is formed on the side surface of the frustum-shaped plug 4 and communicates with the guide hole 8; and

[0044] An external elastic sheet 12 has one end connected to the bottom of the side groove 11 and the other end extending upward to the guide hole 8 and elastically bending away from the guide hole 8. A protruding top 13 is provided on the side of the external elastic sheet 12 facing the guide hole 8 to extend into the guide hole 8 to push the clamping rod 9 to move.

[0045] Specifically, during operation, after the detonator and detonating cord are arranged, the frustum-shaped plug 4 is pressed into the cylindrical groove 2. Because the cylindrical groove 2 corresponds in shape to the frustum-shaped plug 4, the cylindrical groove 2 can only accommodate the frustum-shaped plug 4 of the corresponding shape and size. Therefore, during this process, the outwardly stretched elastic sheet 12 is squeezed by the inner wall of the cylindrical groove 2 to fully enter the side groove 11, and at the same time, the protruding top 13 pushes the clamping rod 9 to slide in the guide hole 8, thereby enabling the elastic soft heads 10 on the two sets of clamping rods 9 to clamp and fix the detonating cord. However, in order to avoid violently squeezing the detonating cord, the elastic soft heads 10 are made of a relatively soft material such as cotton balls, which can apply clamping pressure to fix the detonating cord while preventing violent squeezing. Finally, after the frustum-shaped plug 4 is fully inserted into the cylindrical groove 2, the detonating cord anti-detachment mechanism is kept in the state of fixing the detonating cord.

[0046] Furthermore, when the outer elastic sheet 12 is squeezed by the inner wall of the cylindrical groove 2 to fully enter the side groove 11, the side of the outer elastic sheet 12 opposite to the side groove 11 is located outside the side groove 11 to form an interference fit with the inner wall of the cylindrical groove 2. That is, a part of the outer elastic sheet 12 protrudes from the side groove 11, which increases the friction between the protruding part and the inner wall of the cylindrical groove 2, i.e., interference fit, so that the frustum-shaped plug 4 enters the cylindrical groove 2 and is stably fixed, preventing it from falling off, thereby completing the stable fixation of the detonator and detonating cord.

[0047] This device secures the detonator and detonating cord by using a frustum-shaped plug on a cylindrical shell and a detonating cord anti-detachment mechanism on the frustum-shaped plug, preventing the detonator and detonating cord from falling out of their designated positions and avoiding the problem of failure to detonate due to the detonator and detonating cord falling out of their designated positions.

[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A detonator for use in on-site mixed-loading tunnel excavation blast holes, characterized in that, include: A cylindrical shell (1) has a cylindrical groove (2) coaxially formed at one end. A detonator loading groove (3) is formed at the bottom of the cylindrical groove (2) for loading detonators; A frustum-shaped plug (4) is used to seal the detonator loading groove (3) by embedding it into the cylindrical groove (2). A detonating cord routing hole (5) is provided at the center of the frustum-shaped plug (4) so ​​that the detonating cord of the detonator in the detonator loading groove (3) can run through the detonating cord routing hole (5). as well as A detonating cord anti-detachment mechanism is provided on the frustum-shaped plug (4) to prevent the detonating cord from falling off the frustum-shaped plug (4) by clamping and fixing the detonating cord.

2. The detonator for on-site mixed-loading tunnel excavation blast holes according to claim 1, characterized in that, The detonator loading groove (3) consists of two sets of grooves formed at the bottom of the cylindrical groove (2), and the two sets of detonator loading grooves (3) are symmetrically distributed on both sides of the central axis of the cylindrical groove (2).

3. The detonator for on-site mixed-loading horizontal tunnel excavation blast holes according to claim 1, characterized in that, The cylindrical groove (2) has a receiving groove (6) at its center to accommodate the detonating cord.

4. The detonator for on-site mixed-loading tunnel excavation blast holes according to claim 3, characterized in that, A routing guide groove (7) for avoiding the detonating cord is provided on one side of the detonator loading groove (3). The routing guide groove (7) is provided along the extension direction of the detonator loading groove (3) and is connected to the receiving groove (6).

5. The detonator for on-site mixed-loading tunnel excavation blast holes according to claim 1, characterized in that, The detonating cord anti-detachment mechanism includes two sets of clamping single-arm structures symmetrically arranged on both sides of the frustum-shaped plug (4). The two sets of clamping single-arm structures move simultaneously toward the detonating cord routing hole (5) to clamp the detonating cord. The clamping single-arm structure includes: A guide hole (8) is radially opened on the side of the frustum-shaped plug (4) and communicates with the detonating cord routing hole (5); A clamping rod (9) is inserted into the guide hole (8) and slides within the guide hole (8). An elastic soft head (10) is provided at one end of the clamping rod (9) facing the detonating cord routing hole (5). When the end of the elastic soft head (10) at one end of the clamping rod (9) moves to be flush with the inner wall of the detonating cord routing hole (5), the other end of the clamping rod (9) is in a state of extending out of the guide hole (8). A side groove (11) is formed on the side surface of the frustum-shaped plug (4) and communicates with the guide hole (8); and An external elastic sheet (12) has one end connected to the bottom of the side groove (11) and the other end extending upward to the guide hole (8) and elastically bending away from the guide hole (8). A protruding top (13) is provided on the side of the external elastic sheet (12) facing the guide hole (8) to extend into the guide hole (8) to push the clamping rod (9) to move.

6. A detonator for blast holes in on-site mixed-loading horizontal tunnel excavation according to claim 5, characterized in that, When the outer elastic sheet (12) is pressed by the inner wall of the cylindrical groove (2) to fully enter the side groove (11), the side of the outer elastic sheet (12) opposite to the side groove (11) is located outside the side groove (11) to form an interference fit with the inner wall of the cylindrical groove (2).

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