Fixing device for underwater explosion impact resistance test of electronic detonator

Abstract

The utility model relates to a fixing device for an underwater explosion impact resistance test of an electronic detonator, which comprises a fixing disc, a screw hole is arranged on the fixing disc, and a first bolt is arranged in the screw hole; at least one sliding groove is formed in the fixed disc; a second bolt is installed in any sliding groove, and the second bolt can slide along the sliding groove so as to change the distance between the second bolt and the first bolt. The second bolt is matched and fixed with the locking nut; a first through hole and a second through hole are respectively formed in the first bolt and the second bolt; the top of the primer detonator can be inserted into and abut against the first through hole, and a lead of the primer detonator can penetrate out of the upper end of the first through hole. The top of the to-be-tested detonator can be inserted into and abutted against the second through hole, and a lead of the to-be-tested detonator can penetrate out of the upper end of the second through hole; according to the utility model, the distance between the to-be-tested detonator and the primer detonator can be continuously adjusted, so that the distance setting is not limited by the hole site any more; and the height of the primer detonator can be adjusted, so that the blasting center of the primer detonator and key components of the to-be-tested detonator are positioned on the same horizontal plane, and test errors are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic detonator's performance inspection technical field, concretely relates to a kind of fixing device for electronic detonator underwater explosion impact test. BACKGROUND

[0002] In millisecond blasting, electronic detonator can occur misfire after being subjected to the shock wave generated by the first blast hole, so there is a certain requirement for the explosion impact resistance performance of electronic detonator. The current research on the shock resistance performance of electronic detonator mainly uses the test method of underwater explosion. This method needs to fix the test detonator and the initiating detonator in water. Usually, the detonator is inserted into the hole on the metal fixing disc for fixation. By inserting the test detonator into different holes to adjust the distance from the initiating detonator, the shock resistance performance of the test detonator under different distances is studied. This method cannot continuously adjust the distance between the test detonator and the initiating detonator, which limits the above research. At the same time, the height of the initiating detonator cannot be adjusted. The explosion center of the initiating detonator may not be on the same horizontal plane as the key components of the test detonator, which is easy to produce test error. In addition, the existing fixing disc is thick and heavy, which is not convenient to operate and use. SUMMARY

[0003] The utility model aims at: in view of the problem that the fixing disc in the prior art cannot continuously adjust the distance between the test detonator and the initiating detonator, and cannot adjust the height of the initiating detonator, which limits the research on the shock resistance performance of the test detonator under different distances and is easy to produce test error. A fixing device for electronic detonator underwater explosion impact test is provided.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0005] A fixing device for electronic detonator underwater explosion impact test, comprising a horizontally arranged fixing disc, the fixing disc is provided with a through screw hole in the vertical direction, a first bolt is installed in the screw hole; The fixing disc is provided with at least one sliding groove which is vertically through in the depth direction; A second bolt is installed in any sliding groove, and the second bolt can slide along the length direction of the sliding groove to change the distance with the first bolt; It also includes a locking nut for fixing the second bolt on the fixing disc; The first bolt and the second bolt are respectively provided with a first through hole and a second through hole with variable cross section along the central axis direction; The top of the initiating detonator can be inserted into the first through hole and abut on the inner wall of the first through hole, and the lead wire can be pulled out from the upper end of the first through hole; The top of the test detonator can be inserted into the second through hole and abut on the inner wall of the second through hole, and the lead wire can be pulled out from the upper end of the second through hole.

[0006] The utility model discloses adopt the preceding technical scheme, through the lead of detonating fuse of detonating tube pull hold detonating tube, make its top butt joint in the first through -hole of first bolt, adjust the screw -in depth of control detonating tube up and down movement in the screw hole of first bolt, adjust to make the detonation center of detonating tube and the key component of the measured detonating tube be in the same horizontal plane, avoid producing test error, through the lead of the measured detonating tube pull hold the measured detonating tube, make its top butt joint in the second through -hole of second bolt, realize the distance between the continuous adjustment detonating tube and the measured detonating tube through the sliding second bolt in the sliding slot, can utilize the lock nut fixed after adjusting in place, realize distance setting no longer be limited to the hole position, compared with the fixed disc in prior art can not continuously adjust the distance between the measured detonating tube and detonating tube, also can not adjust the height of detonating tube, lead to when researching the impact resistance of the measured detonating tube under different interval certain limit and easy producing test error problem, the utility model discloses can continuously adjust the distance between the measured detonating tube and detonating tube, make distance setting no longer be limited to the hole position, also can adjust the height of detonating tube, make its detonation center and the key component of the measured detonating tube be in the same horizontal plane, avoid producing test error.

[0007] Further, the fixing disc is a disc, and the screw hole is located at the center of the fixing disc; the fixing disc comprises at least two sliding grooves, and any one of the sliding grooves is arranged along the radial direction of the fixing disc; in this way, a plurality of measured detonating tubes can be arranged on the fixing disc at the same time, and different measured detonating tubes and the detonating tube at the center can be arranged at different intervals, so that the impact resistance of the measured detonating tubes under multiple intervals can be explored in one explosion test, and the efficiency is relatively high.

[0008] Further, the sliding grooves are evenly distributed on the fixing disc around the circumference of the screw hole; in this way, the weight of the fixing disc is balanced, and the fixing disc is prevented from being inclined due to the self weight when arranged horizontally.

[0009] Further, a radial scale line is engraved on the side of any one of the sliding grooves on the top surface and / or the bottom surface of the fixing disc, and the scale line is used for measuring the distance from the second bolt to the first bolt; the scale line is engraved on the fixing disc, so that the distance from the second bolt to the first bolt, that is, the distance from the measured detonating tube to the detonating tube, can be conveniently measured.

[0010] Further, the sliding groove has a "convex" cross section, and comprises a first sliding groove and a second sliding groove connected in sequence; the head of the second bolt is a regular polygon, and the head is embedded in the second sliding groove; the screw rod of the second bolt is matched with the lock nut after penetrating through the first sliding groove; the head of the second bolt is arranged as a regular polygon, for example, a regular quadrilateral, a regular hexagon or a regular octagon, and the head is embedded in the second sliding groove, so that the head of the second bolt is limited by the two opposite side walls of the sliding groove, and the second bolt is prevented from rotating when the position of the second bolt is adjusted.

[0011] Further, the first through hole and the second through hole are both circular truncated cone holes with a narrow upper part and a wide lower part; the upper end diameter of the first through hole is smaller than the diameter of the initiating detonator, and the lower end diameter of the first through hole is larger than the diameter of the initiating detonator; the upper end diameter of the second through hole is smaller than the diameter of the to-be-tested detonator, and the lower end diameter of the second through hole is larger than the diameter of the to-be-tested detonator; in this way, the top of the initiating detonator can be inserted into the first through hole and abut against the inner wall of the first through hole, and the top of the to-be-tested detonator can be inserted into the second through hole and abut against the inner wall of the second through hole.

[0012] Further, the first through hole is a stepped hole, comprising a first small hole and a first large hole which are in communication, the diameter of the initiating detonator is larger than the diameter of the first small hole and smaller than the diameter of the first large hole; the second through hole is a stepped hole, comprising a second small hole and a second large hole which are in communication, the diameter of the to-be-tested detonator is larger than the diameter of the second small hole and smaller than the diameter of the second large hole; in this way, the top of the initiating detonator can be inserted into the first large hole and abut against the step, and the top of the to-be-tested detonator can be inserted into the second large hole and abut against the step.

[0013] Further, the top surface and / or the bottom surface of the fixing disc are circumferentially provided with a plurality of handles; the handles facilitate the movement of the fixing disc.

[0014] Further, the thickness of the fixing disc is less than 1 cm; the fixing disc is made of metal material, and the yield strength thereof is not less than 235 MPa; the fixing disc has a small thickness, a light weight, a high strength and is not easy to deform, and thus is convenient to operate and use.

[0015] Compared with the prior art, the distance between the to-be-tested detonator and the initiating detonator can be continuously adjusted, the distance is no longer limited by the hole position, the height of the initiating detonator can be adjusted, the explosion center of the initiating detonator and the key components of the to-be-tested detonator are on the same horizontal plane, and test errors are avoided; the fixing disc has a small thickness, a light weight, a high strength and is not easy to deform, and thus is convenient to operate and use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of the utility model;

[0017] Figure 2 FIG. 4 is a structural schematic diagram of the fixing disc;

[0018] Figure 3 FIG. 6 is a structural schematic diagram of the first bolt;

[0019] Figure 4 FIG. 8 is a structural schematic diagram of the second bolt;

[0020] Figure 5 FIG. 10 is a sectional view of the first bolt;

[0021] Figure 6 This is a schematic diagram of the locking nut.

[0022] Markings in the diagram: 1-fixed plate, 2-first bolt, 3-second bolt, 4-handle, 5-slide groove, 6-scale line, 7-locking nut, 8-first through hole, 9-second through hole. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] This embodiment provides a fixing device for underwater explosion impact testing of electronic detonators, such as... Figures 1-6 As shown in the attached diagram, it should be noted that the structure of this fixing device is illustrated by flipping the device upside down in the test state; that is, during the test, Figure 1 The side of the fixed plate 1 with the handle 4 should face downwards; the following description is based on the test conditions.

[0026] This fixing device includes a horizontally arranged fixing plate 1, on which a threaded hole runs vertically through, and a first bolt 2 is installed. The fixing plate 1 also has at least one vertically extending groove 5. A second bolt 3 is installed in any groove 5, and the second bolt 3 can slide along the length of the groove 5 to change the distance between it and the first bolt 2. It also includes a locking nut 7 for fixing the second bolt 3 to the fixing plate 1. The first bolt 2 and the second bolt 3 are respectively provided with variable cross-sections along the central axis. The detonator has a first through hole 8 and a second through hole 9. The top of the detonator can be inserted into the first through hole 8 and abut against the inner wall of the first through hole 8, and its lead wire can pass out from the upper end of the first through hole 8. The top of the detonator to be tested can be inserted into the second through hole 9 and abut against the inner wall of the second through hole 9, and its lead wire can pass out from the upper end of the second through hole 9. The first through hole 8 limits the top of the detonator, and the other part of the detonator extends out of the first through hole 8. The second through hole 9 limits the top of the detonator to be tested, and the other part of the detonator to be tested extends out of the second through hole 9.

[0027] The length of the first bolt 2 is greater than the length of the screw hole. The head of the first bolt 2 is located below the fixing plate 1. Its screw extends upward after passing through the screw hole. In order to prevent loosening, an annular washer and a nut are fitted on the screw above the fixing plate 1. The washer is pressed between the upper surface of the fixing plate 1 and the nut.

[0028] The fixed disc 1 is a circular disc, and the screw hole is located at the center of the fixed disc 1; the sliding grooves 5 can be only one or multiple, in the embodiment, eight sliding grooves 5 are included, and any sliding groove 5 is arranged along the radial direction of the fixed disc 1; the sliding grooves 5 are uniformly distributed on the fixed disc 1 around the circumference of the screw hole;

[0029] The radial scale lines 6 are engraved on the side edges of any sliding groove 5 on the top surface and / or the bottom surface of the fixed disc 1, which are used to measure the distance between the second bolt 3 and the first bolt 2;

[0030] The cross section of the sliding groove 5 is in the shape of “convex” word, including the first sliding groove and the second sliding groove which are connected and communicated; the head of the second bolt 3 is a regular even polygon, in the embodiment, a regular octagon, and the head is embedded in the second sliding groove; the screw rod of the second bolt 3 is cooperated with the locking nut 7 after passing through the first sliding groove; in order to obtain better fastening effect, a ring-shaped fastening gasket can also be sleeved on the screw rod, which is compressed between the upper surface of the fixed disc 1 and the locking nut 7; the diameter of the screw rod of the second bolt 3 is 1.6 cm, the diameter of the inscribed circle of the head is 2.2 cm, the width of the second sliding groove is slightly larger than the diameter of the inscribed circle of the head of the second bolt 3, which is 2.3 cm, and the width of the first sliding groove is slightly larger than the diameter of the screw rod of the second bolt 3, which is 1.7 cm;

[0031] In addition, the cross section of the sliding groove 5 can also be rectangular, the width of the sliding groove 5 is greater than the diameter of the screw rod of the second bolt 3 and less than the diameter of the head of the second bolt 3, and the screw rod is cooperated with the locking nut 7 after passing through the sliding groove 5, at this time, the head and the locking nut 7 are respectively abutted on the two side surfaces of the fixed disc 1;

[0032] The first through hole 8 is arranged to be variable cross section in order to make the top of the initiating detonator can be inserted into the first through hole 8 and abutted on the inner wall of the first through hole 8, and the specific shape is not limited; the second through hole 9 is arranged to be variable cross section in order to make the top of the to-be-tested detonator can be inserted into the second through hole 9 and abutted on the inner wall of the second through hole 9, and the specific shape is not limited; in the embodiment, the first through hole 8 and the second through hole 9 are both circular truncated cone holes with the upper narrow and the lower wide; the upper end diameter of the first through hole 8 is less than the diameter of the initiating detonator, and the lower end diameter of the first through hole 8 is greater than the diameter of the initiating detonator; the upper end diameter of the second through hole 9 is less than the diameter of the to-be-tested detonator, and the lower end diameter of the second through hole 9 is greater than the diameter of the to-be-tested detonator;

[0033] It can also be that the first through hole 8 is a stepped hole including the first small hole and the first large hole which are connected and communicated, the diameter of the initiating detonator is greater than the diameter of the first small hole and less than the diameter of the first large hole; the second through hole 9 is a stepped hole including the second small hole and the second large hole which are connected and communicated, the diameter of the to-be-tested detonator is greater than the diameter of the second small hole and less than the diameter of the second large hole;

[0034] Four handles 4 are uniformly distributed on the bottom surface of the fixed disc 1;

[0035] The thickness of the fixing disc 1 is less than 1 cm; the fixing disc 1 is made of metal material, and the yield strength thereof is not less than 235 MPa.

[0036] The utility model discloses adopt the preceding technical scheme, through the lead of detonating fuse and pull hold detonating fuse, make its top butt joint in the first through -hole 8 of first bolt 2, adjust the screw -in depth of first bolt 2 in screw hole control detonating fuse up and down movement, adjust and make the detonation center of detonating fuse and the key component of the measured detonating fuse be in the same horizontal plane, avoid producing test error, through the lead of the measured detonating fuse and pull hold the measured detonating fuse, make its top butt joint in the second through -hole 9 of second bolt 3, through the sliding second bolt 3 in the chute 5 to realize the distance between detonating fuse and the measured detonating fuse continuously adjusted, after adjusting in place, can utilize locking nut 7 fixed, realize distance setting no longer be limited to the hole position, compared with the fixed disc in prior art can not continuously adjust the distance between the measured detonating fuse and detonating fuse, also can not adjust the height of detonating fuse, lead to when studying the impact resistance of the measured detonating fuse under different spacing to be limited to a certain extent and easily produce test error, the utility model discloses can continuously adjust the distance between the measured detonating fuse and detonating fuse, make distance setting no longer be limited to the hole position, also can adjust detonating fuse height, make its detonation center and the key component of the measured detonating fuse be in the same horizontal plane, avoid producing test error, simultaneously, the thickness of fixing disc is small, and the weight is lighter, and the intensity is high, and not easy to deform, convenient operation uses.

[0037] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement and improvement etc. that are made in the spirit and principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. A fixing device for the underwater explosion impact test of electronic detonators, comprising a horizontally arranged fixing disc (1), characterized in that: The fixed disc (1) is provided with a through screw hole, and a first bolt (2) is installed in the screw hole; the fixed disc (1) is provided with at least one sliding groove (5) penetrating through the fixed disc (1) in the depth direction; a second bolt (3) is installed in any sliding groove (5), and the second bolt (3) can slide along the length direction of the sliding groove (5) to change the distance from the first bolt (2); a locking nut (7) is further included for fixing the second bolt (3) on the fixed disc (1); the first bolt (2) and the second bolt (3) are respectively provided with a first through hole (8) and a second through hole (9) with variable cross sections along the central axis direction; the top of the detonator can be inserted into the first through hole (8) and abut against the inner wall of the first through hole (8), and the lead wire can be pulled out from the upper end of the first through hole (8); the top of the to-be-tested detonator can be inserted into the second through hole (9) and abut against the inner wall of the second through hole (9), and the lead wire can be pulled out from the upper end of the second through hole (9).

2. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 1, characterized in that: The fixed disc (1) is a disc, and the screw hole is located at the center of the fixed disc (1); at least two sliding grooves (5) are included, and any sliding groove (5) is arranged along the radial direction of the fixed disc (1).

3. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 2, characterized in that: The sliding grooves (5) are uniformly distributed around the circumference of the screw hole on the fixed disc (1).

4. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 2, characterized in that: Scale lines (6) are engraved on the side of any sliding groove (5) on the top surface and / or bottom surface of the fixed disc (1) in the radial direction, which are used to measure the distance from the second bolt (3) to the first bolt (2).

5. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 1, characterized in that: The cross section of the sliding groove (5) is a "convex" shape, including a first sliding groove and a second sliding groove connected in series; the head of the second bolt (3) is a regular polygon with an even number of sides, and the head is embedded in the second sliding groove; the screw rod of the second bolt (3) passes through the first sliding groove and cooperates with the locking nut (7).

6. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 1, characterized in that: The first through hole (8) and the second through hole (9) are both circular truncated cone holes with a narrow upper end and a wide lower end; the upper end diameter of the first through hole (8) is smaller than the diameter of the detonator, and the lower end diameter of the first through hole (8) is larger than the diameter of the detonator; the upper end diameter of the second through hole (9) is smaller than the diameter of the to-be-tested detonator, and the lower end diameter of the second through hole (9) is larger than the diameter of the to-be-tested detonator.

7. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 1, characterized in that: The first through hole (8) is a stepped hole, including a first small hole and a first large hole connected in series, the diameter of the detonator is larger than the diameter of the first small hole and smaller than the diameter of the first large hole; the second through hole (9) is a stepped hole, including a second small hole and a second large hole connected in series, the diameter of the to-be-tested detonator is larger than the diameter of the second small hole and smaller than the diameter of the second large hole.

8. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 1, characterized in that: A plurality of handles (4) are uniformly distributed on the top surface and / or bottom surface of the fixed disc (1).

9. The fixing device for the electronic detonator to resist underwater explosion impact test according to claim 1, characterized in that: The thickness of the fixed disc (1) is less than 1 cm; the fixed disc (1) is made of metal material, and the yield strength is not less than 235 MPa.

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