Long-distance explosive lead cutter

Abstract

The utility model discloses a long-distance explosion lead cutter, which belongs to the technical field of lead cutting, and is characterized in that an outer threaded pipe is arranged in an outer sleeve, an inner threaded sleeve is spirally mounted on the outer threaded pipe, the inner threaded sleeve is positioned between the outer threaded pipe and the outer sleeve, the outer sleeve is provided with a group of rotating shafts, and clamping and limiting mechanisms are mounted on the rotating shafts. A protection tube is sleeved outside the internal thread sleeve, a top cutter assembly is installed in the internal thread sleeve, the top cutter assembly penetrates through the external thread tube and is limited through a clamping and limiting mechanism, a spring a is arranged between the internal thread sleeve and the external thread tube, lead holes are symmetrically formed in the internal thread sleeve, and a contact pin with a hole is arranged in the clamping and limiting mechanism. The lead cutting device solves the technical problem that potential safety hazards exist due to the fact that lead cutting depends on electronic equipment in the prior art, and is mainly applied to lead cutting.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead cutting, and in particular relates to a long-distance explosive lead cutter. Background Art

[0002] With the rapid development of science and technology, explosives are increasingly used in many fields, such as mining, construction and military. However, in these fields, how to ensure the safe use of explosives has become a crucial issue. Especially when dealing with explosive fuses, we urgently need a reliable device that can achieve accurate cutting at a long distance to effectively avoid potential risks.

[0003] At present, the common method of cutting off explosive wires often relies on electronic devices to cut off the wires. Electronic signals are often limited in range, and operators must be close to the explosives to meet the signal reception of electronic devices, which greatly increases the risk of personal safety. In addition, there may be inaccuracies in the site, which further increases the possibility of accidental explosions and easily causes damage to electronic equipment. Therefore, we urgently need a device that can accurately cut off the explosive wire at a safe distance to protect the life safety of operators and reduce the probability of accidents. For this reason, our company proposes a long-distance explosive wire cutter. Utility Model Content

[0004] The utility model aims to provide a long-distance explosive wire cutter to solve the technical problem of potential safety hazards in the prior art of relying on electronic equipment to cut wires.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long-distance explosive lead cutter, comprising an outer sleeve and an internal threaded sleeve, characterized in that: an external threaded tube is arranged in the outer sleeve, the internal threaded sleeve is spirally installed on the external threaded tube, the internal threaded sleeve is between the external threaded tube and the outer sleeve, a group of rotating shafts are arranged in the outer sleeve, a clamping and limiting mechanism is installed on the rotating shaft, a protective tube is arranged on the outside of the internal threaded sleeve, a top cutting knife assembly is installed in the internal threaded sleeve, the top cutting knife assembly passes through the external threaded tube and is limited by the clamping and limiting mechanism, a spring a is arranged between the internal threaded sleeve and the external threaded tube, lead holes are symmetrically arranged on the internal threaded sleeve, and a pin with a hole is arranged in the clamping and limiting mechanism.

[0006] Furthermore, the clamping and limiting mechanism includes a protrusion sub-piece and a protrusion mother piece, both of which are installed on the rotating shaft, and the protrusion sub-piece and the protrusion mother piece are tightened by a spring b, and the hole pin, the protrusion sub-piece and the protrusion mother piece cooperate to limit the cutter assembly.

[0007] Furthermore, the top cutter assembly includes a supporting slider, a convex long needle and a cutter. The supporting slider is provided with a convex long needle at one end and a cutter at the other end. The convex long needle is limited by the cooperation of the hole pin, the convex block sub-piece and the convex block mother piece.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] By rotating the protective tube to rotate the internal threaded casing, the spring a changes from an extended state to a compressed energy storage state, and the control line and bomb fuse to be cut are inserted through the lead hole. The extension rope bound to the holed pin is manually pulled remotely, and the holed pin is disengaged from the clamping limit mechanism, the clamping limit mechanism is actuated, and the top cutter assembly is also disengaged from the clamping limit mechanism at the same time, and moves forward through the potential energy of spring a. The cutter on the convex long needle immediately acts to cut off the control line and the bomb fuse, thereby achieving the purpose of remotely cutting the lead, which provides favorable assistance to the bomb disposal work. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an internal cross-sectional view of the utility model;

[0011] Figure 2 This is an internal cross-sectional view of the utility model without the protective tube;

[0012] Figure 3 It is a cross-sectional view of the utility model of the pin with hole and the top cutting knife assembly;

[0013] Figure 4 It is a cross-sectional view of the outer sleeve, the external threaded tube, the clamping and limiting mechanism and the pin with a hole of the utility model;

[0014] Figure 5 It is a three-dimensional diagram of the utility model;

[0015] Figure 6 This is a three-dimensional diagram of the utility model without the safety cover and the firing cam;

[0016] Figure 7 It is a three-dimensional diagram of the safety plate of the present utility model.

[0017] In the figure: 1. outer sleeve; 11. rotating shaft; 12. spring pin; 13. ejector pin; 2. internal threaded sleeve; 21. lead hole; 3. external threaded tube; 31. spring a; 4. clamping limit mechanism; 41. protruding block sub-piece; 42. protruding block mother piece; 43. spring b; 5. protective tube; 6. ejector cutter assembly; 61. load-bearing slider; 62. protruding long needle; 63. cutter; 7. pin with hole; 71. ring plate; 8. safety plate; 81. round hole a; 82. through groove; 83. round hole b; 9. safety cover; 91. limit pin; 10. firing cam. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In one embodiment, see Figure 1 The utility model provides a technical solution: a long-distance explosive lead cutter, comprising an outer sleeve 1 and an inner threaded sleeve 2, characterized in that: an outer threaded tube 3 is arranged in the outer sleeve 1, the inner threaded sleeve 2 is spirally installed on the outer threaded tube 3, the inner threaded sleeve 2 is between the outer threaded tube 3 and the outer sleeve 1, the outer sleeve 1 is provided with a group of rotating shafts 11, a clamping and limiting mechanism 4 is installed on the rotating shaft 11, a protective tube 5 is provided on the outer sleeve of the inner threaded sleeve 2, a top cutting knife assembly 6 is installed in the inner threaded sleeve 2, the top cutting knife assembly 6 passes through the outer threaded tube 3 and is limited by the clamping and limiting mechanism 4, a spring a31 is arranged between the inner threaded sleeve 2 and the outer threaded tube 3, lead holes 21 are symmetrically arranged on the inner threaded sleeve 2, and a pin with a hole 7 is arranged in the clamping and limiting mechanism 4.

[0020] In one embodiment, see Figure 1 By rotating the protective tube 5 to rotate the internal threaded sleeve 2, the spring a31 changes from an extended state to a compressed energy storage state, and the control line to be cut and the bomb fuse are inserted through the lead hole 21.

[0021] In one embodiment, see Figure 4 The clamping and limiting mechanism 4 includes a protrusion sub-piece 41 and a protrusion mother piece 42, both of which are installed on the rotating shaft 11. The protrusion sub-piece 41 and the protrusion mother piece 42 are tightened by a spring b43, and the hole pin 7, the protrusion sub-piece 41 and the protrusion mother piece 42 cooperate to limit the cutter assembly 6.

[0022] In one embodiment, see Figure 4 The top cutter assembly 6 includes a supporting slider 61, a convex long needle 62 and a cutter 63. The supporting slider 61 is provided with a convex long needle 62 at one end and a cutter 63 at the other end. The convex long needle 61 is limited by the hole pin 7, the convex block sub-piece 41 and the convex block mother piece 42.

[0023] In one embodiment, see Figure 3 A ring plate 71 is arranged on the pin 7 with a hole, a safety plate 8 is arranged on the ring plate 71, a spring pin 12 is also arranged on the outer sleeve 1, a ejector pin 13 is installed on the spring pin 12, a safety cover 9 is installed on the top of the outer sleeve 1, the top of the pin 7 with a hole passes through the safety cover 9 and slides in the safety cover 9, and both ends of the safety plate 8 pass through the safety cover 9 and slide in the safety cover 9.

[0024] In one embodiment, see Figure 7 A circular hole a81, a through groove 82 and a circular hole b83 are arranged on the safety plate 8. The through groove 82 is arranged on one side of the circular hole a81, and the other side of the circular hole a81 is connected with the circular hole b83. The diameter of the circular hole a81 is larger than the diameter of the hole pin 7.

[0025] In one embodiment, see Figure 7 and Figure 1 Pressing the ejector pin 13 downward can move the safety plate 8 in the safety cover 9. Initially, the through groove 82 in the safety plate 8 serves to limit the position of the pin with hole 7. The safety plate 8 is translated so that the ejector pin 13 enters the round hole b83, which is convenient for directly pulling the pin with hole 7 through external force. The extension rope bound to the pin with hole 7 is manually pulled over a long distance, and the pin with hole 7 is disengaged from the clamping limit mechanism 4. The clamping limit mechanism 4 is actuated, and the top cutter assembly 6 is also disengaged from the clamping limit mechanism 4 at the same time, and moves forward through the potential energy of the spring a31. The cutter 63 on the convex long needle 62 immediately acts to cut off the control line and the bomb fuse, thereby achieving the purpose of remotely cutting off the lead, which provides favorable assistance to the bomb disposal work.

[0026] In one embodiment, see Figure 5 A firing cam 10 is installed on the safety cover 9, and the firing cam 10 is rotatably installed on the safety cover 9 through a limiting nail 91. When in the ready-to-fire state, the firing cam 10 is turned to give a signal to inform the staff that the product is in the ready-to-fire state and stay away.

Claims

1. A long-distance explosive wire cutter, comprising an outer sleeve and an inner threaded sleeve, characterized in that: An external threaded tube is arranged in the outer sleeve, an internal threaded tube is spirally installed on the external threaded tube, a group of rotating shafts are arranged in the outer sleeve, a clamping and limiting mechanism is installed on the rotating shaft, a top cutting knife assembly is installed in the internal threaded tube, the top cutting knife assembly passes through the external threaded tube and is limited by the clamping and limiting mechanism, a spring a is arranged between the internal threaded tube and the external threaded tube, lead holes are symmetrically arranged on the internal threaded tube, and a pin with a hole is arranged in the clamping and limiting mechanism.

2. A long-distance explosive fuse cutter according to claim 1, characterized in that: The clamping and limiting mechanism includes a protrusion sub-piece and a protrusion mother piece, both of which are installed on the rotating shaft. The protrusion sub-piece and the protrusion mother piece are tightened by a spring b, and the hole pin, the protrusion sub-piece and the protrusion mother piece cooperate to limit the cutter assembly.

3. A long-distance explosive fuse cutter according to claim 1, characterized in that: The top cutter assembly includes a load-bearing slider, a convex long needle and a cutter. The load-bearing slider is provided with a convex long needle at one end and a cutter at the other end. The convex long needle is limited by the cooperation of the hole pin, the convex block sub-piece and the convex block mother piece.

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