Blasting tube fixing device for infrastructure construction

Abstract

The present invention discloses a fixing device for a blasting tube for infrastructure construction, comprising: a slot provided at both ends of the blasting tube; a leading member comprising a leading guide plate, a first clamping head, and at least two connecting holes, the first clamping head being clamped to the slot; a plurality of connecting members comprising a middle support, a second clamping head, and at least two limiting holes, the second clamping head being clamped to the slots of two adjacent blasting tubes; a rear sealing member comprising a rear sealing plate, a third clamping head, and at least two positioning holes, the third clamping head being clamped to the slot; an adjusting member comprising at least two long rods, a connecting head, and an operating plate detachably fixed to the rear ends of the plurality of long rods, the connecting head being movable through the positioning holes and the limiting holes in sequence, and being movably clamped to the connecting holes; wherein both the middle support and the rear sealing plate are provided with a detonating cord hole for the detonating cord to be movable through. The present invention has the beneficial effects of directional installation of the blasting tube and precise adjustment of the energy focusing direction of the blasting tube.

Description

Technical Field

[0001] The present invention relates to the technical field of directional pre-splitting and slitting, and more particularly to a blasting tube fixing device for infrastructure construction. Background Art

[0002] A shaped charge blasting tube is a hollow PVC tube with square, round, or shaped cross-sections. Slits or holes are arranged symmetrically along the tube's axis. For square tubes, the holes are split diagonally. Shaped charge blasting tubes are primarily used for pre-splitting blasting, an uncoupled charge structure. The resulting tangential tension creates radial cracks around the blasthole. This combined with the focused charge between the holes creates stress concentration along the line connecting the holes. This first intensifies the tension along the line connecting the holes (including cracks along the line), causing the cracks to develop. Subsequently, high-pressure gas further propels these cracks, creating an "air blade" splitting effect that penetrates all cracks along the line. Shaped charge blasting utilizes the tube to modify the charging pattern and method of the holes surrounding the excavation line to achieve optimal blasting results.

[0003] Factors influencing the directional pre-splitting and cutting effectiveness of shaped charge blasting tubes include not only the performance of the shaped charge blasting tubes themselves, but also their installation during infrastructure construction. Once the blastholes are laid out on the working face according to construction standards, if the center of the shaped charge blasting tube is not precisely aligned with the blasthole center, and if the cut seam or the shaped charge hole is not aligned with the pre-splitting direction (excavation centerline), the pre-calculated blasting effect will not be achieved. Therefore, the orientation, fixation, and connection of the shaped charge blasting tubes during installation are extremely important. Summary of the Invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] In order to achieve these purposes and other advantages according to the present invention, a device for fixing a blasting tube for infrastructure construction is provided, comprising:

[0006] Both ends of the blasting tube are provided with slots;

[0007] A leading member, comprising a leading plate sealed on the front end of the blasting tube, a first clamp provided on the leading plate, and at least two connecting holes provided on the leading plate and located outside the first clamp, wherein the first clamp is clamped to the clamping groove at the front end of the blasting tube;

[0008] A plurality of connecting members, each of the connecting members including a middle support, second clamps disposed at opposite ends of the middle support, and at least two limiting holes disposed in the middle support and located outside the second clamps, wherein a center line connecting the limiting holes and the connecting holes is parallel to the axial direction of the blasting tube, and the two second clamps are correspondingly engaged with the clamping grooves on the rear end and the front end of two adjacent blasting tubes;

[0009] A rear sealing member, comprising a rear sealing plate covering the rear port of the rearmost bursting tube, a third clamping head provided on the rear sealing plate, and at least two positioning holes provided on the rear sealing plate and located outside the third clamping head, wherein the third clamping head is clamped to the corresponding clamping groove of the bursting tube, and the center of the positioning hole is located on the center line connecting the limiting hole and the center of the connecting hole;

[0010] An adjusting member, comprising at least two long rods, a connecting head provided on the front end of the long rods, and an operating plate detachably fixed to the rear ends of the plurality of long rods, wherein the connecting head is movable through the positioning hole and the limiting hole in sequence and is movably engaged with the connecting hole;

[0011] Wherein, the middle support and the rear sealing plate are both provided with a detonating cord hole for the detonating cord to pass through.

[0012] Preferably, the number of the connecting holes, the limiting holes and the positioning holes are all a pair, and the center line of a pair of positioning holes is consistent with the radial direction of the blasting tube and perpendicular to the plane formed by the two energy-gathering seams of the blasting tube.

[0013] Preferably, a plurality of bosses are provided on the side wall of the connecting hole in a radially inward direction;

[0014] The side wall of the connector is provided with a plurality of overlapping platforms corresponding to the plurality of bosses. The overlapping platforms do not overlap with the projections of the bosses along the axial direction of the bursting tube. The distance between the radial outermost ends of the overlapping platforms is greater than the distance between the radial innermost ends of the bosses.

[0015] Preferably, the connecting hole and the connecting head are both in the shape of a truncated cone with a diameter gradually increasing from the front end to the rear end of the blasting tube, the boss and the lap joint are both arranged along the generatrix direction of the connecting hole, the number of the boss and the lap joint are both two, and both are arranged radially symmetrically.

[0016] Preferably, the number of the long rods is two, a pair of positioning protrusions are provided on the outer side wall of the rear end of the long rod along the same radial direction, and the long rod is provided with a thread at the position from the positioning protrusion to the rear end thereof;

[0017] The operating panel has two through holes corresponding to the rear ends of the two long rods. The two through holes are respectively provided on the two long rods and abut against the positioning protrusions. The long rods are located on the other side of the operating panel and are screwed with fastening nuts.

[0018] Preferably, the long rod body is hollow, and a plurality of groups of reinforcing ribs are provided on the inner wall of the long rod body at intervals along the axial direction, each group of reinforcing ribs includes a plurality of reinforcing ribs evenly spaced along the circumferential direction, and there is an overlapping portion between the front and rear ends of two adjacent groups of reinforcing ribs along the circumferential direction.

[0019] Preferably, the number of reinforcing ribs in each group is 3 and they are distributed in the shape of a regular triangular pyramid. The two adjacent groups of reinforcing ribs are inverted to each other, and the length of the overlapping part of the two adjacent groups of reinforcing ribs is 1 / 3 of the length of the reinforcing ribs.

[0020] Preferably, a pair of grooves are provided at the end of the bursting tube in radially opposite directions;

[0021] The first clamping head, the second clamping head and the third clamping head have the same structure. The first clamping head includes a plug tube that is interference-inserted into the interior of the blasting tube and clamping platforms arranged on both side walls of the plug tube. A pair of clamping platforms are correspondingly clamped on a pair of clamping grooves.

[0022] Preferably, the center line of the pair of clamping platforms is perpendicular to the plane formed by the two energy-gathering seams of the blasting tube;

[0023] A pair of threaded holes are provided on the plug tube and the blasting tube, and a center line connecting the pair of threaded holes is located on a plane formed by two energy-gathering seams of the blasting tube.

[0024] Preferably, the front guide plate, the middle support, and the rear sealing plate are all cylindrical, and their diameters are slightly smaller than the diameter of the blasthole.

[0025] The present invention has at least the following beneficial effects: by providing a leading piece and a connecting piece, they play the role of assisting in the installation and directional installation of the blasting tube, and then cooperate with the adjusting piece to accurately adjust the direction of the energy-gathering seam to face a preset direction, thereby giving full play to the energy-gathering blasting effect of the blasting tube.

[0026] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic side view of the structure of the blasting tube according to one of the technical solutions of the present invention;

[0028] Figure 2 A detailed view of the leading member according to one of the technical solutions of the present invention;

[0029] Figure 3 A detailed view of the connector according to one of the technical solutions of the present invention;

[0030] Figure 4 This is a front structural schematic diagram of the connector according to one of the technical solutions of the present invention;

[0031] Figure 5 A detailed view of the rear seal according to one of the technical solutions of the present invention;

[0032] Figure 6 A detailed view of the long rod according to one of the technical solutions of the present invention;

[0033] Figure 7 This is a front structural schematic diagram of the connecting hole according to one of the technical solutions of the present invention;

[0034] Figure 8 This is a detailed view of the operating panel of one of the technical solutions of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0036] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] like Figures 1 to 8 As shown, the meanings of the accompanying drawings in the specification of the present invention are as follows: blasting tube 100, card slot 11, energy-gathering hole 12, leading member 200, leading guide plate 21, first clamp 22, connecting hole 23, boss 24, plug tube 25, clamping platform 26, connecting member 300, middle support 31, second clamp 32, limiting hole 33, detonating cord hole 34, rear sealing member 400, rear sealing plate 41, third clamp 42, positioning hole 43, long rod body 51, connecting head 52, operating panel 53, positioning protrusion 54, through hole 55, reinforcing rib 56, overlapping platform 57.

[0038] like Figures 1 to 8 As shown, the shaped charge blasting tube 100 is hereinafter referred to as the blasting tube 100. The present invention provides a blasting tube fixing device for infrastructure construction designed for the case where the blasting tube 100 has a circular cross section, comprising:

[0039] The blasting tube 100 is provided with a slot 11 at both ends. Specifically, the slots 11 are formed at both ends of the blasting tube 100. Furthermore, there are two slots 11 at each end, and they are symmetrically arranged along the radial direction, so that the blasting tube 100 itself maintains an axially symmetrical shape.

[0040] The leading member 200 includes a leading plate 21 that seals the front end of the blasting tube 100, a first clamp 22 disposed on the leading plate 21, and at least two connection holes 23 disposed on the leading plate 21 and located outside the first clamp 22. The first clamp 22 engages with the clamping slot 11 at the front end of the blasting tube 100. The leading plate 21 seals the front end of the blasting tube 100 and protects the front end of the blasting tube 100 as the blasting tube 100 extends into the blasthole, while also accommodating the explosives secured within the blasting tube 100. Specifically, the leading plate 21 is cylindrical, with a diameter close to the inner diameter of the blasthole, thereby maximizing the proximity of the central axis of the blasting tube 100 to the central axis of the blasthole.

[0041] The first clamping head 22 is connected to the slot 11 at the front end of the blasting tube 100, thereby reliably fixing the leading member 200 to the blasting tube 100. Specifically, the first clamping head 22 is configured to include a plug tube 25 that is interference-inserted into the interior of the blasting tube 100 and a clamping platform 26 disposed on both side walls of the plug tube 25. A pair of clamping platforms 26 are correspondingly clamped to a pair of clamping slots 11. The interference fit between the plug tube 25 and the blasting tube 100 ensures a stable and reliable connection. The clamping of the pair of clamping platforms 26 to the pair of clamping slots 11 ensures that the direction and length of the plug tube 25 extending into the blasting tube 100 are controllable, providing a basis for the directional positioning of the blasting tube 100. Furthermore, a pair of threaded holes are provided on both the plug tube 25 and the blasting tube 100. The center line of the pair of threaded holes is located on the plane formed by the two energy-gathering seams of the blasting tube 100 (the two rows of energy-gathering holes 12 form the energy-gathering seam). When the plug tube 25 is extended into the preset position of the blasting tube 100, the two pairs of threaded holes coincide with each other and are then fixed by screws, thereby improving the connection stability and preventing relative displacement in the axial, radial and other directions.

[0042] The connection holes 23 are used to cooperate with the adjustment member at the back to precisely adjust the direction of the blasting tube 100's energy focus. Specifically, the connection holes 23 are provided in pairs and are radially symmetrically arranged. Furthermore, the centerline of the pair of connection holes 23 is perpendicular to the plane formed by the two energy focus seams of the blasting tube 100, which serves to help mark the direction of the energy focus seams (the direction of the focus seams cannot be directly observed when the blasting tube 100 is fully inserted into the blasthole).

[0043] Multiple connectors 300 are provided. Each connector 300 includes a central support 31, second clamps 32 disposed at opposite ends of the central support 31, and at least two limiting holes 33 disposed in the central support 31 and located outside the second clamps 32. The center line connecting the limiting holes 33 and the connecting hole 23 is parallel to the axial direction of the blasting tube 100. The two second clamps 32 are correspondingly engaged with the slots 11 on the rear and front ends of two adjacent blasting tubes 100. Depending on blasting requirements, multiple blasting tubes 100 may be installed in a blasthole. The connector 300 is used to connect two adjacent blasting tubes 100. The central support 31 is specifically configured as a cylinder with a detonating cord hole 34 defined in the center for passing the detonating cord of the explosive within the blasting tube 100. The diameter of the middle support 31 is close to the inner diameter of the blasthole and is used to support the connection between two adjacent blasting tubes 100, thereby preventing the connection from bending due to gravity and affecting the directional energy focusing effect of the blasting tubes 100. The middle support 31 can make the central axis of the blasting tube 100 as close as possible to the central axis of the blasthole.

[0044] The structure of the second clamping head 32 is identical to that of the first clamping head 22 , and will not be further described herein.

[0045] The limiting holes 33 are used to cooperate with the adjustment member behind them to precisely adjust the energy-focusing direction of the blasting tube 100. The limiting holes 33 are specifically arranged in pairs, symmetrically arranged along the radial direction. Furthermore, the centerline of the pair of limiting holes 33 is perpendicular to the plane formed by the two energy-focusing slits of the blasting tube 100. This line, in turn, lies in the same axial plane as the centerlines of the pair of connecting holes 23, thus assisting in marking the direction of the energy-focusing slits.

[0046] The rear seal 400 includes a rear sealing plate 41 that seals the rear end of the rearmost blasting tube 100, a third clamp 42 disposed on the rear sealing plate 41, and at least two positioning holes 43 disposed on the rear sealing plate 41 and located outside the third clamp 42. The third clamp 42 engages with the corresponding clamping slot 11 of the blasting tube 100. The center of the positioning hole 43 is located on the line connecting the center of the limiting hole 33 and the connecting hole 23. The rear sealing plate 41 is specifically cylindrical and has a detonating cord hole 34 in the center for passing the detonating cord of the explosive in the blasting tube 100. The diameter of the rear sealing plate 41 is close to the inner diameter of the blasting hole, and it is used to support the rear end of the rearmost blasting tube 100, thereby preventing the rear end of the blasting tube 100 from bending downward due to gravity, which would affect the directional energy focusing effect of the blasting tube 100. The rear sealing plate 41 can keep the central axis of the blasting tube 100 as close as possible to the central axis of the blasting hole.

[0047] The structure of the third clamping head 42 is identical to that of the first clamping head 22 , and will not be described in detail herein.

[0048] The positioning holes 43 are used to cooperate with the adjustment member behind them to precisely adjust the energy-focusing direction of the blasting tube 100. The positioning holes 43 are specifically arranged in pairs, symmetrically arranged along the radial direction. Furthermore, the centerline of the pair of positioning holes 43 is perpendicular to the plane formed by the two energy-focusing slits of the blasting tube 100. This line, in turn, lies in the same axial plane as the centerline of the pair of connecting holes 23, thus assisting in marking the direction of the energy-focusing slits.

[0049] The adjustment member comprises at least two long rods 51, connectors 52 disposed at the front ends of the long rods 51, and an operating plate 53 detachably secured to the rear ends of the plurality of long rods 51. The connectors 52 sequentially pass through the positioning holes 43 and the limiting holes 33 and engage with the connecting holes 23. The long rods 51 are provided as a pair, and are each movably inserted through the positioning holes 43 and the limiting holes 33 from outside the blasthole toward the inside. The connectors 52 at the front ends of the long rods 51 extend into the connecting holes 23. Because the rear ends of the long rods 51 are located outside the blasthole, the direction of the energy-gathering slit of the blasting tube 100 can be inferred from the position of the pair of long rods 51. By rotating the long rods 51 at an angle, the direction of the energy-gathering slit can be adjusted to a predetermined orientation.

[0050] Furthermore, a plurality of bosses 24 are provided on the side wall of the connection hole 23 inwardly protruding in the radial direction, specifically a pair of bosses 24, and are all symmetrically arranged in the radial direction;

[0051] The sidewall of the connector 52 is provided with a plurality of outwardly projecting landings 57 corresponding to the plurality of bosses 24. Specifically, the landings 57 are arranged as a pair. The landings 57 and the bosses 24 do not overlap in their axial projections along the blasting tube 100, and the distance between the radially outermost ends of the landings 57 is greater than the distance between the radially innermost ends of the bosses 24. When the connector 52 is inserted into the connection hole 23, the landings 57 do not contact the bosses 24. When the long rod 51 is rotated about its axis, after a certain angle, the landings 57 abut against the bosses 24. At this point, the rear ends of the pair of long rods 51 are fixed by the operating plate 53 to prevent the long rods 51 from rotating.

[0052] Furthermore, both the connection hole 23 and the connector 52 are truncated cones with a diameter that gradually increases from the front end to the rear end of the bursting tube 100. The boss 24 and the landing 57 are both arranged along the generatrix of the connection hole 23. The truncated cone shape facilitates the insertion of the connection head 52 into the connection hole 23, thereby making it easier for the landing 57 to connect with the boss 24. The truncated cone shape also facilitates assembly, with the connection head 52 driving the long rod 51 to sequentially pass through the positioning hole 43 and the stop hole 33.

[0053] Furthermore, a pair of positioning protrusions 54 are provided on the outer side wall of the rear end of the long rod body 51 along the same radial direction, and the long rod body 51 is provided with a thread at the position from the positioning protrusion 54 to its rear end; specifically, the center line of the pair of positioning protrusions 54 is arranged along the radial direction, and is connected to the center of the overlapping platform 57 on the same plane passing through the axial direction of the long rod body 51, so that construction personnel can judge the position of the overlapping platform 57 according to the position of the positioning protrusion 54, thereby facilitating the rotation of the long rod body 51 to the position where the overlapping platform 57 rests on the boss 24.

[0054] Two through-holes 55 are provided on the operating plate 53, corresponding to the rear ends of the two long rods 51. These through-holes 55 are respectively provided on the two long rods 51 and abut against positioning protrusions 54. A fastening nut is screwed onto the other side of the long rods 51. The positioning protrusions 54 abut against the operating plate 53, while the fastening nut secures the operating plate 53. Rotating the operating plate 53 causes the two long rods 51 to rotate about the axial direction of the blasting tube 100, thereby precisely adjusting the direction of the focused slit to a predetermined orientation.

[0055] Furthermore, the long rod 51 is hollow. Multiple groups of reinforcing ribs 56 are axially spaced along its inner wall. Each group of ribs 56 includes multiple ribs 56 evenly spaced along the circumference, with the front and rear ends of two adjacent groups of ribs 56 overlapping circumferentially. Specifically, each group of ribs 56 contains three ribs, arranged in the shape of a regular triangular pyramid. Adjacent groups of ribs 56 are inverted, and the overlap between two adjacent groups of ribs 56 is one-third of the rib 56 length. The ribs 56 are 20 to 30 mm long. Because the blasting tubes 100 are relatively long, connecting multiple blasting tubes 100 increases their length. Therefore, the long rod 51 requires a longer length. If made of solid metal, the long rod 51 would be too heavy and prone to bending. Therefore, the long rod 51 can be made of hard plastic and hollow. However, since this is still too long and prone to bending, an internal reinforcing rod is provided. The present invention has obtained the above-mentioned optimal combination range through calculation and testing with the goal of minimizing the number of reinforcing ribs 56 and achieving a curvature value of the long rod 51 within 10m of bending less than 5°.

[0056] Furthermore, threads are provided on the outer walls of the front guide plate 21, the middle support 31 and the rear sealing plate 41, and a plurality of cylinders with threads on the inner walls are provided. The length of the cylinders is the same as that of the front guide plate 21, the middle support 31 and the rear sealing plate 41. When the cylinders are threadedly mounted on the front guide plate 21, the middle support 31 and the rear sealing plate 41, they can adapt to blast holes with different inner diameters.

[0057] The installation method of the bursting tube 100 includes the following steps:

[0058] S1. Fix the leading member 200 to the front end of the first blasting tube 100, seal the front end of the blasting tube 100 with mud, then clamp the explosives around the detonating cord, tie them with tape, insert them into the blasting tube 100 and secure them, then seal the mud. The length of the mud is calculated based on actual conditions, and the detonating cord is passed through the mud and pulled out.

[0059] S2. Partially insert the first blasting tube 100 into the blasthole and stop at a suitable distance. During this operation, be careful to prevent the detonating cord from bending directly. Then, first connect and fix the connector 300 to the rear end of the first blasting tube 100. Note that the detonating cord needs to pass through the plug tube 25 and the detonating cord hole 34 on the middle support 31.

[0060] S3. Connect and fix the front end of the second blasting tube 100 to the other side of the connector 300, then seal the front end of the blasting tube 100 with mud, pull out the detonating cord in the previous blasting tube 100, clamp the detonating cord with explosives, tie it with tape, put it into the blasting tube 100 and fix it, then seal the mud. The length of the mud is calculated according to the actual situation. The detonating cord passes through the mud and is pulled out;

[0061] S4, repeating the above steps S2 and S3 to complete the installation of the last blasting tube 100;

[0062] S5. Connect and fix the rear seal 400 to the rear end of the last explosive tube, and pass the detonating cord through the seal and pull it out;

[0063] S6. Pass the long rod 51 through the positioning hole 43, the limiting hole 33 and the connecting hole 23, then adjust the position of the long rod 51, fix the operating plate 53, and rotate the operating plate 53 to accurately adjust the direction of the energy-gathering slit so that it faces the preset direction.

[0064] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A blasting tube fixing device for infrastructure construction, characterized in that: include: Both ends of the blasting tube are provided with a slot; A leading member, comprising a leading plate sealed on the front end of the blasting tube, a first clamp provided on the leading plate, and at least two connecting holes provided on the leading plate and located outside the first clamp, wherein the first clamp is clamped to the clamping groove at the front end of the blasting tube; A plurality of connecting members, each of the connecting members including a middle support, second clamps disposed at opposite ends of the middle support, and at least two limiting holes disposed in the middle support and located outside the second clamps, wherein a center line connecting the limiting holes and the connecting holes is parallel to the axial direction of the blasting tube, and the two second clamps are correspondingly engaged with the clamping grooves on the rear end and the front end of two adjacent blasting tubes; A rear sealing member, comprising a rear sealing plate covering the rear port of the rearmost bursting tube, a third clamping head provided on the rear sealing plate, and at least two positioning holes provided on the rear sealing plate and located outside the third clamping head, wherein the third clamping head is clamped to the corresponding clamping groove of the bursting tube, and the center of the positioning hole is located on the center line connecting the limiting hole and the center of the connecting hole; An adjusting member, comprising at least two long rods, a connecting head provided on the front end of the long rods, and an operating plate detachably fixed to the rear ends of the plurality of long rods, wherein the connecting head is movable through the positioning hole and the limiting hole in sequence and is movably engaged with the connecting hole; Wherein, the middle support and the rear cover plate are both provided with a detonating cord hole for the detonating cord to pass through; A plurality of bosses are provided on the side wall of the connecting hole in a radially inward direction; A plurality of overlapping platforms corresponding to the plurality of bosses are protruded outwardly on the side wall of the connector, wherein the overlapping platforms do not overlap with the projections of the bosses along the axial direction of the bursting tube, and the distance between the radially outermost ends of the overlapping platforms is greater than the distance between the radially innermost ends of the bosses; The connecting hole and the connecting head are both in the shape of a truncated cone with a diameter gradually increasing from the front end to the rear end of the blasting tube. The boss and the lap joint are both arranged along the generatrix direction of the connecting hole. There are two bosses and two lap joints, and they are both symmetrically arranged along the radial direction. The long rod body is hollow, and a plurality of groups of reinforcing ribs are provided on the inner wall of the long rod body at intervals along the axial direction, each group of reinforcing ribs includes a plurality of reinforcing ribs evenly spaced along the circumferential direction, and the front and rear ends of two adjacent groups of reinforcing ribs have overlapping portions along the circumferential direction; Each group of reinforcing ribs has three ribs and is distributed in the shape of a regular triangular pyramid. The two adjacent groups of reinforcing ribs are inverted, and the length of the overlapping part of the two adjacent groups of reinforcing ribs is 1 / 3 of the length of the reinforcing ribs. The end of the blasting tube is provided with a pair of grooves facing each other in the radial direction; The first clamping head, the second clamping head, and the third clamping head have the same structure. The first clamping head includes a plug tube that is inserted into the blasting tube through interference and clamping platforms arranged on both side walls of the plug tube. A pair of clamping platforms are correspondingly clamped to a pair of clamping grooves. The center line connecting the pair of clamping platforms is perpendicular to the plane formed by the two energy-gathering seams of the blasting tube; A pair of threaded holes are provided on the plug tube and the blasting tube, and the center line of the pair of threaded holes is located on the plane formed by the two energy-gathering seams of the blasting tube.

2. The explosive tube fixing device for infrastructure construction according to claim 1, characterized in that: The number of the connecting holes, the limiting holes and the positioning holes are all a pair, and the center line of the pair of positioning holes is consistent with the radial direction of the blasting tube and is perpendicular to the plane formed by the two energy-gathering seams of the blasting tube.

3. The blasting tube fixing device for infrastructure construction according to claim 1, characterized in that: There are two long rods, and a pair of positioning protrusions are provided on the outer side wall of the rear end of the long rod along the same radial direction. The long rod is provided with a thread at the position from the positioning protrusion to the rear end thereof; The operating panel has two through holes corresponding to the rear ends of the two long rods. The two through holes are respectively provided on the two long rods and abut against the positioning protrusions. The long rods are located on the other side of the operating panel and are screwed with fastening nuts.

4. The explosive tube fixing device for infrastructure construction according to claim 1, characterized in that: The front guide plate, the middle support and the rear sealing plate are all cylindrical, and their diameters are slightly smaller than the diameter of the blast hole.

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