A deep hole charging gun rod assembly for coal mine tunnel blasting construction

Abstract

The present invention provides a deep hole charge gun rod assembly for coal mine tunnel blasting construction, as shown in FIG1, comprising: a joint, a front end of which is located in a blast hole and is coaxial with the blast hole; a telescopic rod, which is divided into a fixed section and a movable section, the fixed section is coaxially sleeved with the movable section and is located outside the movable section; the movable section is threadedly connected to the rear end of the joint, wherein the telescopic rod is used to drive the joint to move back and forth in the blast hole; a connecting rod, which is threadedly connected to the rear end of the fixed section along the same axis of the blast hole; a pushing mechanism, which is connected to the rear end of the connecting rod, and is used to drive the joint to perform linear reciprocating motion in the blast hole after being coaxially connected with the connecting rod, the telescopic rod and the joint, so as to compact the explosive powder in the blast hole, thereby solving the problems of existing deep hole blasting charge gun rods, such as limited length and inconvenience in use.

Description

Technical Field

[0001] The invention belongs to the field of deep hole blasting of coal mine rocks, and in particular relates to a deep hole charge gun rod assembly for coal mine tunnel blasting construction. Background Art

[0002] At present, blasting construction in deep underground tunnels of coal mines, deep hole loosening blasting construction, deep hole blasting in fault rock areas of coal mining working faces, deep hole loosening blasting in coal seams, etc. all use ultra-deep blasting holes for charging blasting construction, and the hole depth is generally more than 2.5m. In deep hole blasting, charging blasting sticks are the key to charging.

[0003] The existing deep hole blasting charge gun sticks mainly have the following disadvantages: the existing deep hole blasting charge gun sticks have the disadvantages of limited length and inconvenience in use. Summary of the invention

[0004] The purpose of the present invention is to provide a deep hole charge gun rod assembly for coal mine tunnel blasting construction, so as to solve the shortcomings of existing deep hole blasting charge gun rods, such as limited length and inconvenience in use.

[0005] The present invention adopts the following technical scheme: A deep hole charging blasting rod assembly for coal mine tunnel blasting construction, comprising: a joint, the front end of which is located in the blasting hole and is coaxial with the blasting hole;

[0006] The telescopic rod is divided into a fixed section and a movable section. The fixed section is coaxially sleeved with the movable section and is located outside the movable section. The movable section is connected to the rear end of the joint, wherein the telescopic rod is used to drive the joint to move forward and backward in the blast hole.

[0007] A connecting rod connected to the rear end of the fixed section along the same axis of the blasthole;

[0008] The pushing mechanism is connected to the rear end of the connecting rod and is used to drive the joint to perform linear reciprocating motion in the blast hole after being coaxially connected with the connecting rod, the telescopic rod and the joint, so as to compact the explosive powder in the blast hole.

[0009] Further, the driving agencies include:

[0010] The sleeve is sleeved outside the connecting rod and has a front end and a rear end, wherein the connecting rod moves from the rear end to the front end to fill or tamp the explosive powder in the blast hole;

[0011] A round rod, located at the rear end of the sleeve, with its axis perpendicular to the axis of the bore;

[0012] The rotating disk is sleeved outside the round rod, and a protruding column is provided on its surface, and the axis of the protruding column is parallel to the axis of the round rod;

[0013] The frame is a waist-shaped closed ring body, which is fixedly connected to the connecting rod; wherein the protruding column is located in the frame, and the protruding column is used to push the frame to perform linear reciprocating motion during the rotation of the rotating disk.

[0014] Further, a square plate is provided between the sleeve and the round rod;

[0015] The square plate is a strip-shaped plate body, parallel to the axis of the blasthole, and fixedly connected to the rear end of the sleeve; a round rod is fixedly arranged on the surface of the square plate in the vertical direction of the axis of the blasthole.

[0016] Furthermore, the frame is composed of two straight segments and two curved segments, the two straight segments are arranged in parallel and symmetrically, and the curved segments are arranged on the same side of the two straight segments, and the connecting rod is fixedly connected to one of the straight segments.

[0017] Furthermore, through holes are provided on the surface of the rotating disk, and the plurality of through holes are located on the same radial line of the rotating disk; wherein the protruding columns are plugged into different through holes, and the linear motion strokes of the frame are different.

[0018] Furthermore, the inner walls of the plurality of through holes are provided with internal threads, a short rod is provided below the raised column, and the periphery of the short rod is provided with external threads that mesh with the internal threads.

[0019] Further, a locking mechanism is provided between the fixed section and the movable section, and the locking mechanism comprises: an external thread, which is provided on the outer edge of the movable section;

[0020] The internal thread is meshed with the external thread and is arranged on the inner edge of the fixed section.

[0021] Further, the joint can be configured as a hook joint, a drilling joint or a grinding rod joint.

[0022] Furthermore, a fixing bracket is provided outside the sleeve, and the fixing bracket is used to ensure that the joint is always located on the axis of the blasthole.

[0023] The beneficial effects of the present invention are: the required adjustment of the length of the gun stick is achieved by setting the telescopic rod; the pushing mechanism can facilitate the operator to push the gun stick to compact the medicine in the blast hole, thereby increasing its operability; at the same time, the detachable connection of the telescopic rod, the joint, and the pushing mechanism is set to realize the multi-functional and independent selection of the gun stick. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a deep hole charging gun rod assembly for coal mine tunnel blasting construction according to the present invention;

[0025] Figure 2 It is a structural schematic diagram of a driving mechanism in a deep hole charging gun rod assembly for coal mine tunnel blasting construction according to the present invention;

[0026] Figure 3It is a partial structural schematic diagram of a deep hole charging gun rod assembly driving mechanism for coal mine tunnel blasting construction according to the present invention;

[0027] Figure 4 The invention discloses a structural schematic diagram of a rotating disk in a deep hole charging gun rod assembly for coal mine tunnel blasting construction.

[0028] Among them, 100, joint; 200, moving section; 300, fixed section; 400, connecting rod; 500, driving mechanism; 510, sleeve; 520, raised column; 530, rotating disk; 410, curved section; 420, straight section; 540, square plate; 550, round rod; 531, through hole. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present invention provides a deep hole charging gun rod assembly for coal mine tunnel blasting construction, such as Figure 1 As shown, it includes: a joint 100, whose front end is located in the blasthole and is coaxial with the blasthole; a telescopic rod, which is divided into a fixed section 300 and a moving section 200, the fixed section 300 is coaxially sleeved with the moving section 200 and is located outside the moving section 200; the moving section 200 is threadedly connected to the rear end of the joint 100, wherein the telescopic rod is used to drive the joint 100 to move back and forth in the blasthole; a connecting rod 400, which is threadedly connected to the rear end of the fixed section 300 along the same axis of the blasthole; a pushing mechanism 500, which is connected to the rear end of the connecting rod 400, and is used to drive the joint 100 to do linear reciprocating motion in the blasthole after being coaxially connected with the connecting rod 400, the telescopic rod and the joint 100, so as to compact the explosive powder in the blasthole.

[0031] The required adjustment of the gun stick length is achieved by setting a telescopic rod; the setting of a pushing mechanism 500 can facilitate the operator to push the gun stick to compact the medicine in the blast hole, thereby increasing its operability; at the same time, the detachable connection of the telescopic rod, the joint 100, and the pushing mechanism 500 realizes the multi-functional and independent selection of the gun stick.

[0032] In one embodiment, Figure 2 and Figure 3As shown, the pushing mechanism 500 includes: a sleeve 510, which is sleeved outside the connecting rod 400 and has a front end and a rear end, wherein the connecting rod 400 moves from the rear end to the front end to fill or compact the explosive powder in the blast hole; a square plate 540 is provided between the sleeve 510 and the round rod 550; the square plate 540 is a strip-shaped plate body, parallel to the axis of the blast hole, and fixedly connected to the rear end of the sleeve 510; the round rod 550 is fixedly arranged on the surface of the square plate 540 along the vertical direction of the blast hole axis; the rotating disk 530 is sleeved outside the round rod 550, and a protruding column 520 is provided on its surface, and the axis of the protruding column 520 is parallel to the axis of the round rod 550; the frame is a waist-shaped closed ring body, which is fixedly connected to the connecting rod 400; wherein the protruding column 520 is located in the frame, and the protruding column 520 is used to push the frame to perform linear reciprocating motion during the rotation of the rotating disk 530.

[0033] In one embodiment, the frame is composed of two straight segments 420 and two curved segments 410. The two straight segments 420 are arranged in parallel and symmetrically, and the curved segment 410 is arranged on the same side of the two straight segments 420. The connecting rod 400 is fixedly connected to one of the straight segments 420 close to the rear end of the sleeve 510.

[0034] Specifically, the distance between the two straight segments 420 and the bending diameter of the bending segment 410 are slightly larger than the diameter of the protruding column 520, so that when the rotating disk 530 rotates, the protruding column 520 can always contact the frame and make the frame perform linear reciprocating motion.

[0035] In one embodiment, Figure 4 As shown, during the underground deep hole charging process, the working space is generally relatively compact, so the moving stroke of the frame and the connecting rod 400 must change with the change of the working space. Therefore, a through hole 531 is provided on the surface of the rotating disk 530, and the plurality of through holes 531 are all located on the same radial line of the rotating disk 530. The inner wall of each through hole 531 is provided with a thread, and a short rod is provided below the protruding column 520, and the short rod is threadedly connected to the through hole 531;

[0036] The raised column 520 is plugged into different through holes 531, and the linear reciprocating motion stroke of the frame is different, so that the linear reciprocating motion stroke of the connecting rod 400 connected to the frame is different; wherein, after the raised column 520 is threadedly connected to the through hole 531 closer to the center of the circle, the linear reciprocating motion stroke of the frame is smaller.

[0037] In one embodiment, a locking mechanism is provided between the fixed section 300 and the movable section 200 , and the locking mechanism includes: an external thread provided on the outer edge of the movable section 200 ; and an internal thread meshed with the external thread provided on the inner edge of the fixed section 300 .

[0038] Specifically, by rotating the fixed section 300 or the movable end, the engagement stroke of the internal thread and the external thread can be changed, thereby changing the relative distance between the fixed section 300 and the movable section 200. The length of the telescopic rod can be adjusted by changing the relative distance between the fixed section 300 and the movable section 200.

[0039] In one embodiment, the joint 100 can be configured as a hook joint, a drilling joint or a grinding rod joint. When there is a blockage in the blasthole, the hook joint 100 can be inserted into the blasthole to hook it out. When the blasthole is blocked by a large rock, the drilling joint 100 can be used to break it and poke it into the blasthole. When there are protruding rocks on the blasthole wall that hinder the charging work, the grinding rod joint 100 can be used to grind the hole wall flat. According to the situation of the blockage in the blasthole, the corresponding joint 100 is selected and installed on the moving section 200.

[0040] In one embodiment, a fixed bracket is provided outside the sleeve 510, and the fixed bracket is used to ensure that the joint 100 is always located on the axis of the blast hole. The fixed bracket can be a square block on the ground, or a telescopic frame can be erected on the ground; when the underground blast hole is compacted with explosive powder, the square block outside the sleeve 510 can prevent the pushing mechanism 500 from shaking during the operation of the joint 100; when the vertical blast holes on the ground such as rock walls are compacted with explosive powder, a telescopic frame is fixedly erected on the ground and the height of the telescopic frame is adjusted, so that the sleeve 510 can be aligned with the axis of the blast hole, thereby increasing the working stability of the pushing mechanism 500.

Claims

1. A deep hole charging gun rod assembly for coal mine tunnel blasting construction, characterized in that: include: A joint (100), the front end of which is located in the blast hole and is coaxial with the blast hole; A telescopic rod, which is divided into a fixed section (300) and a movable section (200), wherein the fixed section (300) is coaxially sleeved with the movable section (200) and is located outside the movable section (200); the movable section (200) is connected to the rear end of the joint (100), wherein the telescopic rod is used to drive the joint (100) to move forward and backward in the blast hole; A connecting rod (400) connected to the rear end of the fixing section (300) along the same axis of the blast hole; A pushing mechanism (500) is connected to the rear end of the connecting rod (400) and is used to drive the joint (100) to perform linear reciprocating motion in the blast hole after being coaxially connected with the connecting rod (400), the telescopic rod and the joint (100) to compact the explosive powder in the blast hole; The pushing mechanism (500) comprises: A sleeve (510) is sleeved outside the connecting rod (400) and has a front end and a rear end, wherein the connecting rod (400) moves from the rear end to the front end to compact the explosive powder in the blast hole; A round rod (550) is located at the rear end of the sleeve (510), and its axis is perpendicular to the axis of the blast hole; A rotating disk (530) is sleeved outside the round rod (550), and a protruding column (520) is provided on its surface, wherein the axis of the protruding column (520) is parallel to the axis of the round rod (550); The frame is a waist-shaped closed ring body, and is fixedly connected to the connecting rod (400); wherein the protruding column (520) is located in the frame, and the protruding column (520) is used to push the frame to perform linear reciprocating motion during the rotation of the rotating disk (530); A square plate (540) is provided between the sleeve (510) and the round rod (550); the square plate (540) is a strip-shaped plate body, parallel to the axis of the blasthole, and fixedly connected to the rear end of the sleeve (510); the round rod (550) is fixedly arranged on the surface of the square plate (540) along the vertical direction of the axis of the blasthole; A locking mechanism is provided between the fixed section (300) and the movable section (200), the locking mechanism comprising: an external thread provided on the outer edge of the movable section (200); An internal thread meshes with the external thread and is arranged on the inner edge of the fixing section (300).

2. A deep hole charging gun rod assembly for coal mine tunnel blasting construction as claimed in claim 1, characterized in that: The frame is composed of two straight segments (420) and two curved segments (410); the two straight segments (420) are arranged in parallel and symmetrically, and the curved segment (410) is arranged on the same side of the two straight segments (420); and the connecting rod (400) is fixedly connected to one of the straight segments (420).

3. A deep hole charging gun rod assembly for coal mine tunnel blasting construction as claimed in claim 1, characterized in that: A through hole (531) is provided on the surface of the rotating disk (530), and a plurality of the through holes (531) are located on the same radial line of the rotating disk (530); wherein the protruding column (520) is plugged into different through holes (531), and the linear motion strokes of the frame are different.

4. A deep hole charging gun rod assembly for coal mine tunnel blasting construction as claimed in claim 3, characterized in that: The inner walls of the plurality of through holes (531) are all provided with internal threads, a short rod is provided below the protruding column (520), and the periphery of the short rod is provided with external threads that mesh with the internal threads.

5. A deep hole charging gun rod assembly for coal mine tunnel blasting construction as claimed in claim 1, characterized in that: The joint (100) may be configured as a hook joint (100), a drilling joint (100) or a grinding rod joint (100).

6. A deep hole charging gun rod assembly for coal mine tunnel blasting construction as claimed in claim 1, characterized in that: A fixing bracket is provided outside the sleeve (510), and the fixing bracket is used to ensure that the joint (100) is always located on the axis of the blast hole.

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