Device for detecting detonation velocity of on-site mixed emulsion explosive in blast hole

Abstract

The utility model discloses a device for detecting the detonation velocity of on-site mixed emulsion explosive in a blast hole, and particularly relates to the technical field of explosive detonation velocity detection, the device comprises a first positioning ring and a second positioning ring, the two positioning rings with semi-ring structures are hinged through a rotating roller hinge and can be accurately positioned around the blast hole, a stable foundation is provided for explosive detonation velocity detection, and the explosive detonation velocity detection efficiency is improved. The first positioning ring is provided with a needle inlet hole, the second positioning ring is provided with a needle outlet hole, the axes of the two holes coincide, the aperture ratio of the two holes is three to one, a clear penetrating path is provided for a steel needle, and the detection precision is improved. A plurality of guide plates are encircled to form a cylindrical structure, so that the steel needle can be guided and subjected to posture control from different directions, the steel needle is ensured to advance along the axis, the device can adapt to steel needles with different diameters, the universality of the device is improved, the device is simple to mount and operate, and the assembly for measuring the detonation velocity of the emulsion explosive can be quickly completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosive detonation velocity detection, in particular to a blast hole in-site mixed loading emulsion explosive detonation velocity detection device. BACKGROUND

[0002] The detonation velocity is an important index in the explosive explosion performance, and in the ideal case, the detonation velocity of an explosive is a constant, but the actual detonation velocity of the explosive is lower than the ideal detonation velocity, and the main factors affecting the detonation velocity include the charge diameter, the charge density and the like.Under general conditions, the greater the charge diameter and the higher the charge density, the higher the detonation velocity of the explosive.The existing measurement of the detonation velocity of the in-site mixed loading emulsion explosive needs to be modified with a PVC pipe, and the operation process is extremely cumbersome, and at this time, the measured detonation velocity of the explosive has a large difference with the actual detonation velocity in the blast hole.Because the in-site mixed loading emulsion explosive is loaded into the blast hole, the state of the explosive has changed a lot, such as the density of the explosive, the charge diameter, and especially the high temperature of the in-site mixed loading explosive, so the detonation velocity of the in-site mixed loading emulsion explosive in the blast hole has great uncertainty.The detection of the detonation velocity of the in-site mixed loading explosive in the blast hole can truly reflect the actual performance of the explosive, and has great guiding significance for engineering blasting.The effective fixation of the detonation velocity test target line is an important basis for detecting the detonation velocity of the in-site mixed loading emulsion explosive in the blast hole.

[0003] Under the prior art, the Chinese patent with the publication number CN209690295U discloses an emulsion explosive detonation velocity detection device, which comprises a track plate, any one end of the track plate is provided with a fixed side plate for fixing the end part of the emulsion explosive, the top of the track plate is provided with a first circular ring and a second circular ring in sequence at the position close to the fixed side plate for threading the initial end and the terminal end of the emulsion explosive, the first circular ring, the second circular ring and the track plate are all provided with a threading hole, any one end of the threading hole is provided with a strong magnet for pulling out the steel needle from the threading hole.

[0004] The above device draws out the steel needle in the threading hole through the magnet, but in the use process, the steel needle cannot be directly aligned with the hole, and personnel need to continuously adjust, and in the actual operation, especially in the case of needing to detect the detonation velocity for many times, the frequent adjustment of the position of the steel needle can greatly reduce the work efficiency and increase the time cost of detection, and therefore, the blast hole in-site mixed loading emulsion explosive detonation velocity detection device is proposed to solve the above problems. Utility model content

[0005] The utility model aims at solving one of the technical problems existing in the prior art or related art.

[0006] Therefore, the technical scheme adopted by the utility model is as follows:

[0007] The application discloses a device for detecting the detonation velocity of in-situ mixed emulsion explosive in a blast hole, which comprises a first positioning ring and a second positioning ring, the first positioning ring is provided with a needle inlet hole penetrating through the first positioning ring, the second positioning ring is provided with a needle outlet hole penetrating through the second positioning ring, a guide assembly for controlling the posture of a steel needle is arranged in the needle inlet hole, the guide assembly comprises a plurality of mounting cavities which are arranged on the inner wall of the needle inlet hole, positioning grooves are arranged on the two sides of the inner wall of the mounting cavities, and a moving roller is arranged in the mounting cavities.

[0008] Preferably, the first positioning ring and the second positioning ring are both in a half-ring structure, and rotating rollers are arranged at the ends of the first positioning ring and the second positioning ring which are close to each other.

[0009] Preferably, the axis of the needle inlet hole coincides with the axis of the needle outlet hole, and the diameter ratio of the needle inlet hole to the needle outlet hole is 3:1.

[0010] Preferably, a ring opening is arranged on the side of the needle inlet hole which is away from the needle outlet hole.

[0011] Preferably, the plurality of mounting cavities are uniformly distributed around the axis of the needle inlet hole, and the positioning grooves on the two sides are uniformly distributed along the axis of the mounting cavities.

[0012] Preferably, the two ends of the moving roller extend into the positioning grooves on the two sides, and the two ends of the moving roller are rotationally connected with the bottom of the cavities in the positioning grooves.

[0013] Preferably, the torsional springs on the two ends are symmetrically distributed along the axis of the moving roller, the torsional springs are arranged in the positioning grooves, one end of the torsional spring is fixedly connected with the groove wall of the positioning groove, and the other end of the torsional spring is fixedly connected with the surface of the moving roller.

[0014] Preferably, the moving arm is fixedly connected with the moving roller, an embedding cavity for the moving arm is arranged at the bottom of the mounting cavity, and the two sides of the moving arm are slidingly connected with the inner wall of the embedding cavity.

[0015] By adopting the above technical scheme, the device has the following advantages:

[0016] The blast hole on-site mixed emulsion explosive detonation velocity detection device is mainly composed of a first positioning ring and a second positioning ring, the positioning ring with a two-semi-ring structure is hinged through a rotating roller hinge, can be accurately positioned around the blast hole, provides a stable basis for explosive detonation velocity detection, the first positioning ring is provided with an entry needle hole, the second positioning ring is provided with an exit needle hole, the two hole axes are coincident and the aperture ratio is three to one, an explicit penetration path is provided for the steel needle, and the detection precision is improved. The guide assembly in the entry needle hole comprises a plurality of mounting cavities, and the cavities are provided with movement rollers, torsional springs, movement arms and guide plates. After the steel needle enters from the entry needle hole ring opening, the steel needle is in contact with the inclined surface of the guide plate, the movement arm is moved by extruding the guide plate, the movement roller is driven to rotate and the torsional spring is compressed. The plurality of guide plates are surrounded to form a cylindrical structure, can guide and posture control the steel needle from different directions, ensure that the steel needle advances along the axis, avoid deviation, and improve detection accuracy. The torsional spring can adapt to steel needles with different diameters, and improve the versatility of the device. The ring opening design facilitates the entry of the steel needle, the device is simple to operate, can quickly complete the assembly of the emulsion explosive detonation velocity, and improves the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model.

[0018] Figure 2 It is a two positioning ring assembly structure schematic view of the utility model.

[0019] Figure 3 It is an entry needle hole internal structure schematic view of the utility model.

[0020] Figure 4 It is a utility model Figure 3 A place amplification structure schematic view in the utility model.

[0021] Figure 5 It is a guide assembly structure schematic view of the utility model.

[0022] In the drawing: 1, first positioning ring; 101, entry needle hole; 102, ring opening; 2, second positioning ring; 201, exit needle hole; 3, rotating roller; 4, guide assembly; 401, mounting cavity; 402, positioning groove; 403, movement roller; 404, torsional spring; 405, movement arm; 406, embedding cavity; 407, guide plate; 408, inclined surface; 409, assembly hole. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Example: Figures 1-5 As shown, this utility model provides a device for detecting the detonation velocity of mixed emulsion explosives in a borehole, including a first positioning ring 1 and a second positioning ring 2. Both the first positioning ring 1 and the second positioning ring 2 are semi-ring structures. A rotating roller 3 is provided at one end of the first positioning ring 1 and the second positioning ring 2 that are close to each other. The first positioning ring 1 and the second positioning ring 2 are hinged together by the rotating roller 3. The surface of the first positioning ring 1 has a needle inlet hole 101 that penetrates through itself, and the surface of the second positioning ring 2 has a needle outlet hole 201 that penetrates through itself. The axes of the needle inlet hole 101 and the needle outlet hole 201 coincide, and the ratio of the diameter of the needle inlet hole 101 to the diameter of the needle outlet hole 201 is three to one. A guide component 4 for controlling the attitude of the steel needle is installed in the inner cavity of the needle inlet hole 101. A ring opening 102 is provided on the side of the needle inlet hole 101 away from the needle outlet hole 201 to facilitate the entry of the steel needle. The device consists of the first positioning ring 1 and the second positioning ring 2. Both positioning rings are semi-ring structures and are hinged together by the rotating roller 3. It can be installed around the borehole. When in use, place the emulsion explosive cartridge inside the ring consisting of two semi-rings, so that the end of the emulsion explosive cartridge is close to the fixed side plate, thus achieving the initial positioning of the explosive cartridge.

[0025] Further, a plurality of installation cavities 401 are arranged in the guide assembly 4, the installation cavities 401 are arranged on the inner wall of the needle insertion hole 101, the plurality of installation cavities 401 are uniformly distributed around the axis of the needle insertion hole 101, positioning grooves 402 are arranged on both sides of the inner wall of the installation cavity 401, the two positioning grooves 402 are uniformly distributed along the axis of the installation cavity 401, a moving roller 403 is arranged in the installation cavity 401, the two ends of the moving roller 403 extend into the two positioning grooves 402 respectively, the two ends of the moving roller 403 are rotatably connected with the bottom of the inner cavity of the two positioning grooves 402, torsional springs 404 are sleeved on the two ends of the moving roller 403, the two ends of the torsional springs 404 are symmetrically distributed along the axis of the moving roller 403, the torsional springs 404 are arranged in the positioning grooves 402, one end of the torsional spring 404 is fixedly connected with the groove wall of the positioning groove 402, the other end of the torsional spring 404 is fixedly connected with the surface of the moving roller 403, a moving arm 405 is arranged on one side of the moving roller 403, an assembly hole 409 is arranged on the end of the moving arm 405 close to the installation cavity 401, the moving arm 405 is sleeved on the surface of the moving roller 403 through the assembly hole 409, the moving arm 405 is fixedly connected with the moving roller 403, an embedded cavity 406 is arranged at the bottom of the installation cavity 401 for the moving arm 405 to enter, the two sides of the moving arm 405 are slidably connected with the inner wall of the embedded cavity 406, the end of the moving arm 405 away from the installation cavity 401 extends to the center of the needle insertion hole 101, a guide plate 407 is fixedly connected with the end of the moving arm 405 close to the center of the needle insertion hole 101, the guide plate 407 is in an arc structure, a plurality of guide plates 407 are arranged in a cylindrical structure, an inclined surface 408 is arranged on the top of the guide plate 407 for the steel needle to enter, the steel needle with the enameled copper wire is inserted into the ring opening 102 on one side of the first positioning ring 1. After the steel needle enters the needle insertion hole 101, it contacts the inclined surface 408 on the top of the plurality of guide plates 407 in the guide assembly 4. The steel needle presses the guide plate 407, which drives the moving arm 405 to move to one side of the installation cavity 401. In the moving process, the moving arm 405 drives the moving roller 403 to rotate in the positioning groove 402, and at the same time, the torsional spring 404 is compressed. Since the plurality of installation cavities 401 are uniformly distributed around the axis of the needle insertion hole 101, and the plurality of guide plates 407 are arranged in a cylindrical structure, in the process of the steel needle entering, each guide plate 407 is guided and posture-controlled from different directions by the moving arm 405 and the torsional spring 404, so that the steel needle can accurately advance along the axis direction of the needle insertion hole 101 and the needle outlet hole 201, and finally pass out of the needle outlet hole 201 of the second positioning ring 2.

[0026] Working principle: when using the device, the device is composed of a first positioning ring 1 and a second positioning ring 2, both of which are half-ring structures, and are hinged together by the rotating roller 3, and can be installed around the blast hole. When in use, the emulsion explosive cartridge is placed in the ring composed of two half-rings, so that the end of the emulsion explosive cartridge abuts against the fixed side plate, achieving preliminary positioning of the explosive cartridge.

[0027] The steel needle with the enameled copper wire is inserted from the ring opening 102 on the side of the first positioning ring 1 opposite the needle insertion hole 101. After the steel needle enters the needle insertion hole 101, it is in contact with the inclined surfaces 408 on the top of the plurality of guide plates 407 in the guide assembly 4. The steel needle presses the guide plates 407, causing the guide plates 407 to drive the movement arm 405 to move to the side of the installation chamber 401. During the movement, the movement arm 405 drives the movement roller 403 to rotate in the positioning groove 402, while compressing the torsion spring 404. Since the plurality of installation chambers 401 are uniformly distributed around the axis of the needle insertion hole 101, the plurality of guide plates 407 are arranged in a cylindrical structure. During the insertion of the steel needle, each guide plate 407 guides and controls the posture of the steel needle from different directions under the action of the movement arm 405 and the torsion spring 404, so that the steel needle can accurately advance along the axis direction of the needle insertion hole 101 and the needle outlet hole 201, and finally pass out of the needle outlet hole 201 of the second positioning ring 2.

[0028] Then, the enameled copper wire is cut, the steel needle is taken out, the emulsion explosive is gently taken off, and the two wire ends are separated. The head and tail of the target line are folded towards the tail end of the explosive charge and fixed on the test sample with adhesive tape, and the assembly for measuring the detonation velocity of the emulsion explosive is completed.

[0029] The positioning ring with a half-ring structure is hingedly connected through the rotating roller 3, can be accurately positioned around the blast hole, ensures the accurate relative position of the device and the blast hole, provides a stable basis for the detection of the explosive detonation velocity, the axes of the needle insertion hole 101 and the needle outlet hole 201 coincide, and the ratio of the diameters of the needle insertion hole 101 and the needle outlet hole 201 is three to one, which provides a clear penetration path for the steel needle, ensures the accurate direction of the steel needle in the explosive charge, improves the detection accuracy, the plurality of guide plates 407 in the guide assembly 4 are arranged in a cylindrical structure, can guide the steel needle from multiple directions, ensures that the steel needle always advances along the predetermined axis direction, avoids the deviation of the steel needle during the penetration of the explosive charge, and further improves the accuracy of the detection, the torsion springs 404 at both ends of the movement roller 403 can automatically adjust the position and force of the guide plates 407 according to the entry of the steel needle, adapt to steel needles of different diameters, and improve the versatility of the device. The ring opening 102 on the side of the needle insertion hole 101 is designed to facilitate the entry of the steel needle, the installation and operation of the entire device are relatively simple, the assembly for measuring the detonation velocity of the emulsion explosive can be quickly completed, and the detection efficiency is improved.

[0030] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A device for detecting the detonation velocity of in-situ mixed emulsion explosive in a blast hole, characterized in that, The utility model provides a kind of needle positioning ring, including first positioning ring (1) and second positioning ring (2), the first positioning ring (1) surface is equipped with needle entry hole (101) through itself, the second positioning ring (2) surface is equipped with needle exit hole (201) through itself, the needle entry hole (101) inner cavity is equipped with guide assembly (4) for controlling steel needle posture, the guide assembly (4) includes multiple installation chambers (401), the installation chamber (401) is equipped on the inner wall of needle entry hole (101), the installation chamber (401) inner wall both sides are equipped with positioning groove (402), the installation chamber (401) is built-in motion roller (403), the motion roller (403) both ends are sleeved with torsion spring (404), the motion roller (403) one side is provided with motion arm (405), the motion arm (405) one end close to installation chamber (401) is equipped with assembly hole (409), the motion arm (405) is sleeved on the surface of motion roller (403) by assembly hole (409), the motion arm (405) one end away from installation chamber (401) extends to the axis of needle entry hole (101), the motion arm (405) one end close to the center of needle entry hole (101) is fixedly connected with guide plate (407), the guide plate (407) is arc structure, multiple guide plate (407) are surrounded into cylindrical structure, the guide plate (407) top is equipped with inclined plane (408) for facilitating steel needle to enter.

2. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, The first positioning ring (1) and the second positioning ring (2) are both half-ring structures, and the first positioning ring (1) and the second positioning ring (2) are provided with rotating rollers (3) at one end close to each other, and are hingedly connected through the rotating rollers (3).

3. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, The axis of the needle entry hole (101) and the needle exit hole (201) coincides, and the aperture ratio of the needle entry hole (101) to the needle exit hole (201) is 3:

1.

4. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, The side of the needle entry hole (101) away from the needle exit hole (201) is provided with a ring opening (102) for facilitating the steel needle to enter.

5. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, Multiple installation chambers (401) are uniformly distributed around the axis of the needle entry hole (101), and the positioning grooves (402) on both sides are uniformly distributed along the axis of the installation chamber (401).

6. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, The motion roller (403) extends into the positioning grooves (402) on both sides at both ends, and both ends of the motion roller (403) are rotationally connected with the inner bottom of the positioning grooves (402).

7. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, The torsion springs (404) at both ends are symmetrically distributed along the axis of the motion roller (403), and the torsion springs (404) are arranged in the positioning grooves (402), one end of the torsion spring (404) is fixedly connected with the groove wall of the positioning groove (402), and the other end of the torsion spring (404) is fixedly connected with the surface of the motion roller (403).

8. The device for detecting the detonation velocity of in-situ mixed emulsion explosive in blast hole according to claim 1, characterized in that, The motion arm (405) is fixedly connected with the motion roller (403), the bottom of the installation chamber (401) is provided with an embedding chamber (406) for facilitating the motion arm (405) to enter, and the motion arm (405) is slidingly connected with the inner wall of the embedding chamber (406) on both sides.

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