Underwater bare explosion point positioning and fixed net rack

Abstract

The application provides an underwater bare explosion explosion point positioning and fixed net rack, which comprises a net body, a float, an anchor rod, a lower jacking rod and an explosive box. The net body is a hard metal net, which is provided with net holes with specified sizes, and the float is connected to the top of the net body and can pull the net body upward; the anchor rod is connected to the net body, and the pulling force of the anchor rod can form a balance force with the pulling force of the float, so that the net body is fixed in water; the explosive box is installed at the lower end of the net body through the lower jacking rod and abuts against the reef. The net body fixed underwater is used as a fixing object to fix the explosive on the reef at the bottom of the net body, so that the disadvantage of multiple punching is avoided when multiple explosives are fixed underwater, the explosive can be placed in the explosive box, and the upper and lower telescopic lower jacking rod can make the explosive reach the reef surface at different heights, so that the convenience of explosive fixing is further improved. When installation is performed, the net holes can be used as a reference to determine the explosive installation position, so that the explosive installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwater blasting, in particular to an underwater naked blasting point positioning and fixed net rack. BACKGROUND

[0002] In the process of underwater construction, due to the influence of underwater reefs on normal construction, the underwater reefs will be blasted and removed according to the construction requirements. Among them, underwater point blasting technology is a main and commonly used means for quickly removing underwater reefs, which has the characteristics of controllable blasting range and high reef removal efficiency. However, it is very difficult to drill holes and place explosives in the rapid flow and turbulent flow, so naked blasting is usually used, that is, the explosives are fixed on the top of the blasting reefs according to the specified distance. In order to avoid the adverse effects of improper placement of explosives on blasting, the existing underwater explosive position is mainly measured underwater or visually estimated, and when fixing the explosives, the explosives are usually fixed on the surface of the reefs by using counterweights or expansion nails to prevent the explosives from being washed away by the water flow. However, since the blasting surface is not flat and it is difficult to accurately determine the installation position of the explosives underwater, and it is complex and laborious to fix the explosives one by one at multiple points. In addition, since the naked explosive is not placed in the hole, the impact force is large during blasting, so the blasting material will splash out of the water surface and cause adverse consequences. In view of this, an underwater naked blasting point positioning and fixed net rack is proposed. SUMMARY

[0003] To solve the problems in the background art, the technical scheme adopted by the present application is:

[0004] An underwater naked blasting point positioning and fixed net rack is provided, which comprises a net body, a float, an anchor rod, a lower jacking rod and an explosive box.

[0005] The net body is a hard metal net provided with net holes of a specified size, and a node connector is arranged on each node of the net body, and a first locking head is arranged at the side end thereof;

[0006] The float is connected to the top of the net body and can pull the net body upward;

[0007] The anchor rod is connected to the net body and can pull the net body downward, wherein the pulling force of the anchor rod can form a balance force with the pulling force of the float to fix the net body in water;

[0008] The lower jacking rod can be installed in the node connector up and down and fixed by the first locking head;

[0009] The explosive box is used for placing explosives and is connected to the bottom end of the lower jacking rod.

[0010] As preferred, an upper pull rod is included, the float is mounted on the upper pull rod, and the bottom end of the upper pull rod is connected to the node connector which is not connected to the lower top rod.

[0011] As preferred, threads are arranged on the upper pull rod, and the float is fixed by two nuts mounted on the threads and clamped on the upper and lower ends of the float.

[0012] As preferred, a connecting pipe is arranged at the top end of the explosive box, a second locking head is arranged at the side end of the connecting pipe, the lower end of the lower top rod is inserted into the connecting pipe and fixed by the second locking head.

[0013] As preferred, the lower top rod can extend to the inside of the explosive box through the connecting pipe.

[0014] As preferred, the connecting pipe includes a ball bowl and a ball head pipe, the ball head of the bottom end of the ball head pipe is movably mounted in the ball bowl and fixed by screwing.

[0015] As preferred, a lead hole and a placement slot penetrating the lower top rod are respectively arranged along the axial direction of the lower top rod, and the placement slot penetrates the outer wall of the lower top rod.

[0016] As preferred, the lower top rod is made of ABS plastic and internally provided with a plurality of air hole structures.

[0017] As preferred, a blocking hole plate is arranged at the mesh hole of the net body, and the blocking hole plate is only upwardly rotatably hinged on the net body.

[0018] As preferred, a lap joint ear is arranged at the hinged end of the blocking hole plate, and the lap joint ear is lap jointed on the top of the net body.

[0019] The present application has the advantages that the net body fixed underwater is used as a fixing object to fix the explosive on the reef at the bottom, the disadvantage of multiple punching for fixing multiple explosives underwater is avoided, the explosive can be placed in the explosive box, and the upper and lower extension of the lower top rod can make the explosive reach the reef surface of different heights to further improve the convenience of explosive fixing. Since the mesh hole of the net body is set to a specified size, the installation distance of the explosive can be quickly and accurately measured by the number of mesh holes, the accuracy of explosive position layout is improved, and the safety of blasting and the installation efficiency of the explosive are improved.

[0020] On the other hand, since the net body is arranged at the top of the blasting point, the net body can play a role in blasting protection to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is a schematic diagram of the overall combination structure provided by the embodiments of the present application;

[0023] Figure 2 is Figure 1 is a local enlarged schematic diagram at A in the above figure;

[0024] Figure 3 is Figure 1 is a local enlarged schematic diagram at B in the above figure;

[0025] Figure 4 is Figure 1 is a local enlarged schematic diagram at C in the above figure;

[0026] Figure 5 is Figure 1 is a local enlarged schematic diagram at D in the above figure;

[0027] Figure 6 is a schematic diagram of the top net structure provided by the embodiments of the present application;

[0028] Figure 7 is Figure 6 is a schematic diagram of the structure of the blocking hole plate in the open state in the above figure;

[0029] Figure 8 is Figure 6 is a local enlarged schematic diagram at E in the above figure;

[0030] Figure 9 is a schematic diagram of the explosive box structure provided by the embodiments of the present application;

[0031] In the figure: 1 - net body, 1.1 - node connector, 1.2 - first locking head, 2 - float, 3 - upper pull rod, 4 - lower top rod, 4.1 - plane, 4.2 - lead hole, 4.3 - placement groove, 5 - explosive box, 5.1 - connecting pipe, 5.11 - ball head pipe, 5.12 - ball bowl, 5.2 - second locking head, 6 - anchor rod, 7 - blocking hole plate, 7.1 - lap joint ear. Embodiment

[0032] The above solutions will be further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the present application rather than limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not mentioned are usually the conditions in conventional experiments.

[0033] In one embodiment, an underwater naked explosion point positioning and fixing net frame is provided, mainly comprising a net body 1 made of hard metal net, which is provided with net holes, in this embodiment, the size of the square net holes is 0.2m-0.5m. And each node on the net body 1 is provided with a node connector 1.1, and a first locking head 1.2 is arranged at the side end of the node connector 1.1.

[0034] A lower jacking rod 4 is installed in part of the node connector 1.1, and the lower jacking rod 4 is movably installed in the node connector 1.1, so that the lower jacking rod 4 can be adjusted up and down, and after adjustment, it is fixed by the first locking head 1.2, so as to realize the positioning of the lower jacking rod 4 and the net body 1.

[0035] In this embodiment, an explosive box 5 for placing explosives is installed at the bottom end of each lower jacking rod 4.

[0036] In this embodiment, in order to keep the net body 1 stationary in water, the net body 1 is fixed by being pulled up and down, which specifically includes a floating buoy 2 for moving the net body 1 upwards and an anchor rod 6 for moving the net body 1 downwards. In this embodiment, the floating buoy 2 is connected to the top of the net body 1 and can pull the net body 1 upwards. The anchor rod 6 is connected to the net body 1 and can pull the net body 1 downwards. After installation, the pulling force of the anchor rod 6 can balance the pulling force generated by the floating buoy 2, thereby realizing the fixation of the net body 1 in water. The anchor rod 6 is fixed on the riverbed, and the floating buoy 2 is used to avoid damage caused by vertical frame pulling during blasting, and the floating buoy is more convenient and simple to install and remove.

[0037] In this embodiment, in order to further facilitate the installation and removal of the floating buoy 2 and the stability of the floating buoy in water, an upper pull rod 3 is installed on the top of the net body, and the floating buoy 2 is installed on the upper pull rod 3. In this embodiment, the floating buoy can be worn on the upper pull rod 3, and the bottom end of the upper pull rod 3 is connected to the node connector 1.1 which is not connected to the lower jacking rod 4. Similarly, the upper pull rod 3 can also be fixed by the first locking head 1.2, so that the position and quantity of the floating buoy 2 can be adjusted conveniently, thereby improving the convenience of use. Preferably, threads are arranged on the upper pull rod 3, and the floating buoy 2 is fixed by being installed on the threads and clamped between the two nuts on the upper and lower ends of the floating buoy 2.

[0038] In this embodiment, in order to facilitate the installation and removal of the explosive box 5, a connecting pipe 5.1 is arranged at the top end of the explosive box 5, a second locking head 5.2 is arranged at the side end of the connecting pipe 5.1, and the lower end of the lower jacking rod 4 is inserted into the connecting pipe 5.1 and fixed by the second locking head 5.2.

[0039] It should be noted that the first locking head 1.2 and the second locking head 5.2 are bolts, which press down the top rod 4 by screwing, or press up the pull rod 3 by the first locking head 1.2, thereby realizing the fixation of the rod body. In order to further facilitate the constant pressure stress, a flat surface 4.1 is provided on the side wall of the lower top rod 4 and the side wall of the upper pull rod 3, and the locking head can be pressed on the flat surface.

[0040] In specific use, the explosive is first placed in the explosive box on the water, then the explosive box 5 is installed at the bottom end of the lower top rod 4, and the explosive lead is led out, then the lower top rod 4 is installed on the different node connecting pipes 1.1 according to the needs, then the float 2 is installed on the top of the net body 1. In order to achieve floating balance, the float 2 can be evenly arranged on the net body, and the number of floats can be increased or decreased according to the required buoyancy. Then the anchor rod 6 is fixed to the edge of the net body 1. After the above installation is completed, the entire net body is thrown into the blasting point. At this time, the net body will be suspended in the water under the tension of the float. In order to avoid the influence of water flow, the frogman dives underwater and the bottom end of the anchor rod 6 is fixed to the riverbed. By adjusting the traction, the net body 1 can be fixed at a certain height above the rocks to be blasted and cover the area to be blasted. Finally, the frogman adjusts each lower top rod 4 downward so that the explosive box can abut against the rock surface exposed at different heights, and after adjustment, the first locking head 1.2 is fixed. Therefore, the explosive box can be placed on the rock surface by using the net body 1, thereby avoiding the inconvenience of fixing the explosive one by one by binding ropes or expansion screws. In addition, the mesh size of the net body 1 in this example is already set, and the mesh size is preferably set to 0.3m*0.3m. Each lower top rod 4 is installed at the node of the net body. The installation position of adjacent explosives can be determined by the number of mesh, such as 0.6m interval installation of explosives. Therefore, only the lower top rod 4 needs to be installed at two nodes, so that the installation distance between explosives can be accurately determined, thereby improving the safety of blasting. Moreover, this installation distance can be performed on the water or underwater, so that the convenience of explosive installation is improved to a certain extent, the labor of personnel is reduced, and the efficiency of blasting operation is improved. In addition, the net body is above the blasting point during blasting, so it can also play a role in blasting protection.

[0041] In summary, in order to further facilitate the fixation of the explosive in the explosive box, the lower top rod 4 can extend through the connecting pipe 5.1 to the inside of the explosive box 5, thereby directly pressing the explosive in the box body by using the lower top rod 4 when installing the explosive box 5, thereby avoiding the inconvenience of fixing the explosive again.

[0042] In this example, in order to realize the contact of the explosive box 5 with the reef surface of different angles, the connecting pipe 5.1 comprises a ball bowl 5.12 and a ball head pipe 5.11, wherein the bottom end of the ball head pipe 5.11 is movably installed in the ball bowl 5.12, the ball bowl 5.12 is fixedly arranged at the top end of the box body, and a top wire is arranged outside the ball bowl 5.12, and the ball head pipe 5.11 is fixed by being pressed on the ball head pipe 5.11 by the top wire. Therefore, the adjustment and retention of the placement angle of the explosive box can be realized.

[0043] In addition, in order to prevent the lead of the explosive from being damaged, the lead is placed upwardly extending, and the lead hole 4.2 and the placement slot 4.3 which is penetrated through the outer wall of the lower top rod 4 are respectively arranged along the axis of the lower top rod 4. The lead can be placed into the lead hole 4.2 through the placement slot 4.3 during the installation of the explosive, so that the lead hole 4.2 protects the lead, and the lead can be easily placed into the lead hole 4.2 through the placement slot 4.3, and therefore the convenience of the installation of the lead is improved.

[0044] In addition, in order to avoid that the blasting force is transmitted to the net body through the lower top rod 4 and causes serious damage, in this example, the lower top rod 4 is made of ABS plastic and is internally provided with a plurality of air hole structures. Since the strength of the ABS plastic is low, the lower top rod 4 will be broken during blasting, so as to avoid the transmission of the blasting force upwardly, and the air hole structures arranged on the lower top rod 4 can make the lower top rod 4 break quickly and float, which is beneficial to the salvage of the broken lower top rod 4 after blasting and reduces the pollution to the environment.

[0045] In order to further block the blasting material from splashing out of the water surface after blasting, the blocking hole plate 7 is arranged at the mesh hole of the net body 1, the blocking hole plate 7 can only be upwardly rotated and hinged on the net body 1, and the blasting force can make the blocking hole plate 7 swing upwardly during blasting impact. Since the blocking hole plate 7 will have resistance when swinging in the water, the resistance of the blocking hole plate 7 is used to block the impact force, so as to effectively avoid the blasting material from splashing out of the water surface. The blocking hole plate 7 can only be upwardly rotated, a torsional spring can be added at the hinge shaft of the blocking hole plate 7, and a limiting part is arranged, specifically, the overlapping ear 7.1 is arranged away from the hinge end of the blocking hole plate 7, and the overlapping ear 7.1 is overlapped on the top of the net body 1, so as to avoid the free end of the blocking hole plate 7 from downwardly rotating. It should be noted that the overlapping ear 7.1 is arranged to be hingedly swung upwardly, in order to avoid the whole net body from flying up and being damaged without impact buffering.

[0046] Based on the above ideal embodiments according to the present application, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. An underwater bare explosive shot positioning and fixing net rack, characterized in that, The net body (1) is a hard metal net provided with mesh holes of specified size, each node of the net body (1) is provided with a node connector (1.1), and a first locking head (1.2) is arranged at the side end thereof; A float (2) is connected to the top of the net body (1) to pull the net body (1) upward; An anchor rod (6) is connected to the net body (1) to pull the net body (1) downward, wherein the pulling force of the anchor rod (6) can form a balance force with the pulling force of the float (2) to fix the net body (1) in water; A lower top rod (4) is movably installed in the node connector (1.1) and fixed by the first locking head (1.2); An explosive box (5) is used to place explosives and connected to the bottom end of the lower top rod (4); The top end of the explosive box (5) is provided with a connecting pipe (5.1), the side end is provided with a second locking head (5.2), the lower end of the lower top rod (4) is inserted into the connecting pipe (5.1) and fixed by the second locking head (5.2); The lower top rod (4) can extend to the inside of the explosive box (5) through the connecting pipe (5.1); The connecting pipe (5.1) includes a ball bowl (5.12) and a ball head pipe (5.11), wherein the bottom end of the ball head pipe (5.11) is movably installed in the ball bowl (5.12) and fixed by screwing; The ball bowl (5.12) is fixedly arranged at the top end of the box body, and a top screw is arranged outside the ball bowl (5.12) to fix the ball head pipe (5.11) by pressing.

2. The underwater bare blast point positioning and fixing net rack according to claim 1, characterized in that, An upper pull rod (3) is connected to the node connector (1.1) which is not connected to the lower top rod (4) and the float (2) is installed on the upper pull rod (3).

3. An underwater bare blast point positioning and fixing net rack as claimed in claim 2, characterized in that, The upper pull rod (3) is provided with threads, and the float (2) is fixed by installing two nuts on the threads and clamping the upper and lower ends of the float (2).

4. The underwater bare blast point positioning and fixing net rack according to claim 1, characterized in that, A lead hole (4.2) and a placement groove (4.3) penetrating the outer wall of the lower top rod (4) are arranged on the lower top rod (4) in the axial direction, respectively.

5. The underwater bare blast point positioning and fixing net rack according to claim 1, characterized in that, The lower top rod (4) is made of ABS plastic and internally provided with a plurality of air hole structures.

6. The underwater bare blast point positioning and fixing net rack of claim 1, wherein, A blocking hole plate (7) is arranged at the mesh hole of the net body (1), and the blocking hole plate (7) can only be pivoted upward on the net body (1).

7. An underwater bare blast point positioning and fixing net rack as claimed in claim 6, characterized in that, The blocking hole plate (7) is provided with a lap ear (7.1) away from the pivoted end, and the lap ear (7.1) is lapped on the top of the net body (1).

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