A method of detecting a discontinuous charge

Abstract

The application discloses a method for detecting discontinuous charging, which comprises the following steps: wrapping a layer of wrapping paper capable of conducting electricity outside each explosive package, connecting a first wire to the wrapping paper of the lowermost explosive package, connecting a second wire to the wrapping paper of the uppermost explosive package, detecting the resistance between the first wire and the second wire, taking out the explosive package from the blasting hole and then re-putting it into the blasting hole if the resistance between the first wire and the second wire does not meet the requirements, and then detecting the resistance between the first wire and the second wire again until the resistance between the first wire and the second wire meets the requirements. The application has the effect of facilitating the construction personnel to detect the continuity of the explosive package.

Description

Technical Field

[0001] This invention relates to the field of blasting, and more particularly to a method for detecting discontinuous charges. Background Technology

[0002] Underwater deep-hole blasting typically refers to drilling blasting holes with a diameter greater than 75mm and a depth greater than 5.0m into the target material using certain methods, followed by loading explosives for blasting. Underwater deep-hole blasting explosive charges are usually cylindrical or strip-shaped. During construction, blasting holes are first drilled underwater, and then sections of explosive charges are sequentially placed into the holes. The top section is detonated, and the lower sections are detonated sequentially through sympathetic detonation, thus completing the blast. However, because the blasting is underwater, the water exerts buoyancy on the explosive charges, causing them to tilt after placement and become stuck against the hole wall, resulting in discontinuities. Furthermore, falling rocks and other debris can easily occur during placement, filling the spaces between adjacent explosive charges with collapsed soil and stones, further contributing to discontinuities. The discontinuity of these explosive charges is not easily noticed by construction workers. After the explosive charges are detonated, the discontinuity may cause the sympathetic detonation to be interrupted, resulting in the failure to detonate all the explosive charges and causing a blind detonation.

[0003] Regarding the aforementioned technologies, the applicant believes that the following defects exist: after the explosive charge is placed into the blast hole, it is not easy for construction personnel to detect the continuity of the explosive charge. Summary of the Invention

[0004] To facilitate construction workers in detecting the continuity of explosive charges, this application provides a method for detecting discontinuous charges.

[0005] This application provides a method for detecting discontinuous explosive charges, which employs the following technical solution:

[0006] A method for detecting discontinuous charges includes the following steps:

[0007] Drilling blasting holes: Drill blasting holes in the area where blasting is required using a drilling rig according to the designed blasting network;

[0008] Packaging of explosive charges: Each section of the explosive charge is wrapped with a layer of conductive packaging paper;

[0009] Explosive charge placement: Multiple explosive charge sections are placed into the blast hole in sequence. The packaging paper of the bottom explosive charge section is connected to the first wire, and the packaging paper of the top explosive charge section is connected to the second wire. Both the first and second wires extend outside the blast hole.

[0010] Continuity test of explosive charge: Detect the resistance between the first wire and the second wire. If the resistance between the first wire and the second wire does not meet the requirements, remove the explosive charge from the blast hole and lower it again. Then, detect the resistance between the first wire and the second wire again until the resistance between the first wire and the second wire meets the requirements.

[0011] Blasting: Seal the opening of the blast hole and detonate the topmost explosive charge.

[0012] By adopting the above technical solution, if the explosive charges are continuous, the packaging paper of each explosive charge, the first wire and the second wire are connected to form a circuit, and the resistance value between the first wire and the second wire is not greater than the set value, the continuity between the explosive charges can be determined by detecting the resistance between the first wire and the second wire. This makes it convenient for construction personnel to detect the continuity of the explosive charges, ensures the smooth detonation of each explosive charge, and reduces the occurrence of blind detonations.

[0013] Preferably, a wire connector is installed on the packaging paper of the bottommost explosive charge, the wire connector being electrically connected to the packaging paper, and a connector is installed at one end of the first wire, the connector being connected to and electrically connected to the wire connector.

[0014] By adopting the above technical solution, during installation, the wire connector is first installed on the packaging paper, and then the connector is installed on the wire connector, which is convenient and realizes the electrical connection between the first wire and the packaging paper.

[0015] Preferably, the wire connector includes a sleeve, the outer wall of which is fixedly connected to packaging paper, the side wall of which is provided with a pin hole, a conductive plate and a compression spring are installed inside the sleeve, the two ends of which are respectively fixedly connected to the conductive plate and the lower end of the sleeve, the conductive plate is movably connected to the sleeve, the conductive plate is connected to the packaging paper through a third wire, the connector is installed inside the sleeve and electrically connected to the conductive plate, and the connector is provided with a limiting pin, one end of which extends into the pin hole.

[0016] By adopting the above technical solution, after the connector is installed into the sleeve, the connector and the sleeve are fixed by the cooperation of the limiting pin and the pin hole. The connector is connected to the packaging paper through the conductive plate. During installation, the limiting pin enters the pin hole to ensure that the connector is connected to the conductive plate, which facilitates installation.

[0017] Preferably, the connector includes a connecting rod installed inside the sleeve. Conductive plates are respectively installed at both ends of the connecting rod. One conductive plate abuts against the conductive plate, and the other conductive plate is fixedly connected to the first wire. A cavity is provided inside the connecting rod, and an electromagnet is installed inside the cavity. The two ends of the conductive winding of the electromagnet are electrically connected to the two conductive plates respectively. A sliding hole is provided on the side wall of the cavity. One end of the limiting pin is slidably installed in the sliding hole, and a telescopic spring is connected to the end of the limiting pin located in the sliding hole.

[0018] By adopting the above technical solution, the two conductive sheets and the electromagnet are connected, allowing the first wire to be electrically connected to the conductive plate through the two conductive sheets and the electromagnet, thereby realizing the electrical connection between the first wire and the packaging paper. When the resistance between the first wire and the second wire meets the requirements, the first wire and the second wire are connected to a power source to energize the electromagnet, causing it to generate magnetism. The electromagnet then exerts an attractive force on the limiting pin, causing the limiting pin to move towards the electromagnet, disengage from the pin hole, and pull the first wire to pull the connector out of the sleeve and out of the blast hole. This allows for the reuse of the first wire and the connector, saving resources. At the same time, it avoids the first wire remaining in the blast hole and causing adverse effects on the blast.

[0019] Preferably, the side wall of the sleeve is provided with a guide groove, the two ends of the guide groove are respectively connected to the upper end of the sleeve and the pin hole, and the depth of the guide groove gradually decreases from top to bottom.

[0020] By adopting the above technical solution, the guide groove is used to guide the limiting pin during connector installation. During installation, the limiting pin enters the guide groove from the upper port. As the connecting rod continues to be inserted into the sleeve, the limiting pin gradually retracts into the sliding hole and compresses the telescopic spring as it moves downward. When the limiting pin moves down to the limiting hole, it moves into the limiting hole under the force of the telescopic spring, thus fixing the connecting rod and the sleeve together and completing the installation of the connector and wire joint.

[0021] Preferably, in the explosive packaging step, a packaging machine is used to wrap the packaging paper. The packaging machine includes a support assembly, an adhesive application assembly, a roll assembly, and a cutting assembly. The adhesive application assembly, roll assembly, and cutting assembly are all installed on the support assembly. The roll assembly and the cutting assembly are respectively located on both sides of the adhesive application assembly. The packaging paper roll is placed on the roll assembly.

[0022] By adopting the above technical solution, the packaging paper is installed on the roll assembly and gradually released to the gluing assembly. The gluing assembly applies glue to one side of the packaging paper. The packaging paper is then manually wrapped around the explosive charge, and the packaging paper is cut by the cutting assembly to complete the packaging of one explosive charge. This improves the packaging efficiency of the explosive charge. In addition, the packaging machine does not require a power unit, which improves the safety of the explosive charge packaging process.

[0023] Preferably, the glue application assembly includes a glue application roller, a pressure roller, and a glue tank. The glue application roller and the pressure roller are rotatably connected to the support assembly and are arranged in parallel. The packaging paper passes between the glue application roller and the pressure roller and abuts against the glue application roller and the pressure roller respectively. The glue tank is located above the glue application roller, and a glue outlet is provided below the glue tank. A glue outlet valve is installed in the glue outlet.

[0024] By adopting the above technical solution, the gluing roller and the pressing roller press the packaging paper, and pull the packaging paper forward. The movement of the packaging paper drives the gluing roller and the pressing roller to rotate. The glue in the glue tank is applied to the gluing roller, and the gluing roller applies the glue to one side surface of the packaging paper. The explosive charge is placed on the packaging paper and rolled up manually. Then the packaging paper is cut, pressed and glued to both ends of the explosive charge to complete the packaging of the explosive charge. The gluing of the packaging paper is uniform, the gluing quality is good, and the probability of missed application is low.

[0025] Preferably, the gluing assembly is provided in two sets, and glue A and glue B are respectively installed in the glue tanks of the two sets of gluing assemblies. Glue A and glue B can be mixed to form AB glue, and the packaging paper passes through the gluing roller and the pressing roller of the two sets of gluing assemblies in sequence.

[0026] By adopting the above technical solution, the glue is divided into glue A and glue B for separate application, which can prevent the glue in the glue tank from solidifying and facilitate the cleaning of the glue application roller.

[0027] Preferably, the adhesive application assembly further includes a lifting frame, which is slidably connected to the support assembly and can move up and down. The lifting frame is connected to a limit bolt, which is threadedly connected to the support assembly. One end of the limit bolt can abut against the lifting frame and fix the lifting frame to the support assembly. The adhesive application roller and the pressing roller are both mounted on the lifting frame.

[0028] By adopting the above technical solution, the height of the glue-applying roller and the pressing roller can be adjusted by adjusting the position of the lifting frame, thereby adjusting the distance between the glue-applying roller and the glue tank, so that the glue in the glue tank can be accurately applied to the glue-applying roller.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. If the explosive charges are continuous, the packaging paper, the first wire and the second wire of each explosive charge are connected to form a circuit, and the resistance value between the first wire and the second wire is not greater than the set value. The continuity between the explosive charges can be determined by detecting the resistance between the first wire and the second wire. This makes it convenient for construction personnel to detect the continuity of the explosive charges, ensure the smooth detonation of each explosive charge, and reduce the occurrence of blind detonations.

[0031] 2. Once the resistance between the first and second wires meets the requirements, connect the first and second wires to the power supply, energize the electromagnet, causing it to become magnetic. The electromagnet then attracts the limit pin, causing it to move towards the electromagnet and disengage from the pin hole. Pulling the first wire will then pull the connector out of the sleeve and out of the blast hole, thus enabling the reuse of the first wire and connector and saving resources. At the same time, it avoids the first wire remaining in the blast hole and causing adverse effects on the blast. Attached Figure Description

[0032] Figure 1 This is a flowchart of a method for detecting discontinuous charge loading according to Embodiment 1 of this application.

[0033] Figure 2 This is a schematic diagram of the installation of the explosive charge, the first wire, and the second wire in Embodiment 1 of this application.

[0034] Figure 3 This is a schematic diagram of the structure of the first explosive charge connected to the first wire in Embodiment 2 of this application.

[0035] Figure 4 This is a schematic diagram of the wire connector of Embodiment 2 of this application.

[0036] Figure 5 This is a cross-sectional schematic diagram of the wire connector and connector according to Embodiment 2 of this application.

[0037] Figure 6 This is a schematic diagram of the packaging machine according to Embodiment 3 of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. First explosive charge; 2. Last explosive charge; 3. First wire; 4. Second wire; 5. Wire connector; 51. Sleeve; 52. Pin hole; 53. Guide groove; 54. Conductive plate; 55. Compression spring; 56. Third wire; 6. Connector; 61. Connecting rod; 62. Limiting pin; 63. Telescopic spring; 64. Conductive sheet; 65. Cavity; 66. Electromagnet; 67. Sliding hole; 711. Trolley; 712. Roller support rod; 713. Roller support rod; 714. Operating platform; 721. Paper roll; 731. Glue roller; 732. Compression roller; 733. Slide plate; 734. Glue tank; 735. Limiting bolt; 741. Cutter; 742. Upright pole; 743. Slide cylinder; 744. Return spring; 745. Lever; 746. Pedal. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0041] This application discloses a method for detecting discontinuous charges.

[0042] Example 1

[0043] Reference Figure 1 and Figure 2 A method for detecting discontinuous charges, comprising the following steps:

[0044] Drilling blasting holes: Drill blasting holes in the area where blasting is required using a drilling rig according to the designed blasting network.

[0045] Packaging of explosive charges: Each section of the explosive charge is wrapped with a layer of conductive wrapping paper, which is made of tin foil. The wrapping paper covers the sides and ends of the explosive charge.

[0046] Lowering the explosive charge: On the ground, workers manually attach the first wire 3 to the packaging paper of the first explosive charge 1. A mark is then made on the first wire 3, with the length of the wire 3 between the mark and the first explosive charge equal to the designed placement depth of the first explosive charge. Next, each explosive charge is lowered to the bottom of the water. Workers dive down to retrieve the explosive charge and place it at the opening of the blast hole. The first explosive charge 1 is then placed into the blast hole. The explosive charge falls downwards under its own weight. As the first explosive charge 1 descends, workers gradually insert the first wire 3 from outside the blast hole into the blast hole until the first wire 3 is taut and the mark on the first wire 3 is no higher than the opening of the blast hole, indicating that the first explosive charge is in place. If the first wire 3 cannot be taut or the mark on the first wire 3 is higher than the opening of the blast hole, pull the first wire 3 upwards a certain distance to move the first explosive charge 1 upwards. Then release the first wire 3 to allow the first explosive charge 1 to continue descending until it is in place. Place the first wire 3 close to the side wall of the blast hole. Then, place each of the middle explosive charges into the blast hole in sequence, and each of the middle explosive charges will fall under its own weight. Then, put the last explosive charge 2 into the blast hole and connect the second wire 4 to the packaging paper of the last explosive charge 2. Finally, pull the ends of the first wire 3 and the second wire 4 outside the blast hole out of the water.

[0047] Continuity test of explosive charges: Above the water surface, use a multimeter to measure the resistance between the first wire 3 and the second wire 4. If the resistance between the first wire 3 and the second wire 4 is greater than the set value, remove the explosive charge from the blast hole and lower it again following the same procedure. Then measure the resistance between the first wire 3 and the second wire 4 again until the resistance between them is no greater than the set value. Method for determining the set value: On the ground, connect all the explosive charges to be placed in the blast hole in a continuous straight line. Then use a multimeter to measure the resistance between the first wire 3 and the second wire 4. Add an allowable error value to this resistance value to obtain the set value.

[0048] Blasting: The opening of the blasting hole is sealed with stemming material, and the last explosive charge 2 is detonated.

[0049] The implementation principle of a method for detecting discontinuous explosive charges in this application embodiment is as follows: Since the packaging paper is conductive, the packaging paper of each explosive charge, the first wire 3 and the second wire 4 can be connected to form a circuit. By detecting whether the resistance value between the first wire 3 and the second wire 4 is greater than a set value, the continuity between each explosive charge can be determined. This facilitates the construction personnel to detect the continuity of the explosive charges, ensures the smooth detonation of each explosive charge, and reduces the occurrence of blind detonations.

[0050] Example 2

[0051] Reference Figure 3 , Figure 4 and Figure 5The difference from Embodiment 1 is that a wire connector 5 is installed on the packaging paper of the first explosive charge 1, and a connector 6 is installed on one end of the first wire 3. The connector 6 is fixedly connected to the wire connector 5 and electrically connected to the wire connector 5. The wire connector 5 includes a sleeve 51, the axis of which is parallel to the axis of the explosive charge. The sleeve 51 is fixedly connected to the packaging paper with glue. The side wall of the sleeve 51 is provided with a pin hole 52. One end of the pin hole 52 is connected to the inner wall of the sleeve 51. The inner wall of the sleeve 51 is provided with a guide groove 53. The two ends of the guide groove 53 are respectively connected to the upper end face of the sleeve 51 and the pin hole 52. The depth of the guide groove 53 gradually decreases from top to bottom. A conductive plate 54 and a compression spring 55 are installed inside the sleeve 51. The two ends of the compression spring 55 are fixedly connected to the conductive plate 54 and the lower end of the sleeve 51, respectively. The conductive plate 54 can move up and down inside the sleeve 51. The conductive plate 54 is connected to packaging paper via a third wire 56, one end of which is adhered to the packaging paper with conductive adhesive. A connector 6 is installed inside the sleeve 51 and abuts against the conductive plate 54. The connector 6 includes a connecting rod 61, which is installed inside the sleeve 51 and can move up and down within it. Conductive plates 64 are installed at both ends of the connecting rod 61. One conductive plate 64 abuts against the conductive plate 54, and the other conductive plate 64 is fixedly welded to one end of the first wire 3. A cavity 65 is provided inside the connecting rod 61, and an electromagnet 66 is installed inside the cavity 65. The two ends of the conductive winding of the electromagnet 66 are electrically connected to the two conductive plates 64, respectively. The side wall of cavity 65 is provided with a sliding hole 67, which is aligned with one end of electromagnet 66. The two ends of sliding hole 67 are respectively connected to the outer walls of cavity 65 and connecting rod 61, and sliding hole 67 is aligned with pin hole 52. Connecting rod 61 is connected to limit pin 62. The two ends of limit pin 62 are slidably installed in sliding hole 67 and limit block, respectively. One end of limit pin 62 in sliding hole 67 is connected to telescopic spring 63. The two ends of telescopic spring 63 are respectively fixedly connected to connecting rod 61 and limit pin 62. Limit pin 62 fixes limit rod and sleeve 51 to each other, thereby fixing wire connector 5 and connector 6. During installation, guide groove 53 is used to guide limit pin 62 and guide limit pin 62 into limit hole. The ends of first wire 3 and second wire 4 outside burst hole can be connected to float ball, which brings the ends of first wire 3 and second wire 4 outside burst hole to the water surface, facilitating measurement of resistance between first wire 3 and second wire 4.Since the last section of explosive charge 2 is relatively close to the opening of the blast hole, it can be placed into the blast hole first, and then one end of the second wire 4 can be inserted into the blast hole and attached to the packaging paper of the last section of explosive charge 2. Alternatively, one end of the second wire 4 can be fixedly connected to the packaging paper of the last section of explosive charge 2 first, and then the last section of explosive charge 2 can be placed into the blast hole. After the first wire 3 is pulled out of the blast hole, the second wire 4 and the last section of explosive charge 2 can be pulled out of the blast hole. Then the second wire 4 can be removed, and the last section of explosive charge 2 can be placed back into the blast hole. A short stick can be used to confirm whether the last section of explosive charge 2 is in place.

[0052] The implementation principle of the above embodiment is as follows: When the measured resistance value between the first wire 3 and the second wire 4 is not greater than the set value, the first wire 3 and the second wire 4 are connected by a power source to energize the electromagnet 66. The energized electromagnet 66 generates magnetism, which attracts the limiting pin 62. The limiting pin 62 moves towards the electromagnet 66, disengaging from the pin hole 52. Pulling the first wire 3 will pull the connector 6 out of the guide joint. During the upward movement of the connector 6, the conductive plate 54 moves upward under the force of the compression spring 55. The conductive plate 54 and the conductive sheet 64 remain in contact, maintaining the energized state of the electromagnet 66, thereby keeping the limiting pin 62 retracted into the sliding hole 67 and preventing the limiting pin 62 from obstructing the upward movement of the connector 6. After the connector 6 disengages from the wire joint 5, the first wire 3 is pulled out of the blast hole, thus realizing the reuse of the first wire 3 and the connector 6, saving resources, and preventing the first wire 3 from remaining in the blast hole and having an adverse effect on the blast.

[0053] Example 3

[0054] Reference Figure 6 The difference between this embodiment and Embodiment 2 lies in that, in the packaging step of the explosive package, a packaging machine is used to wrap the packaging paper. The packaging machine includes a support assembly, a gluing assembly, a roll assembly, and a cutting assembly. The gluing assembly, roll assembly, and cutting assembly are all mounted on the support assembly. The roll assembly and cutting assembly are respectively located on both sides of the gluing assembly, and the packaging paper roll is placed on the roll assembly. There are two sets of gluing assemblies. The glue tanks 734 of the two sets of gluing assemblies are respectively filled with glue A and glue B. Glue A and glue B can be mixed to form AB glue. The packaging paper passes sequentially between the gluing rollers 731 and the pressing rollers 732 of the two sets of gluing assemblies.

[0055] The support assembly includes a trolley 711, two vertically arranged roll support rods 712, four vertically arranged roller support rods 713, and an operating platform 714. The roll support rods 712, roller support rods 713, and operating platform 714 are all fixed to the trolley 711, which can be locked. The roller support rods 713 are located between the roll support rods 712 and the operating platform 714. The roll assembly is mounted on the two roll support rods 712, and two sets of glue-applying components are mounted on the four roller support rods 713 and are parallel to each other. The operating platform 714 has a cutting groove in the middle, through which the cutting components can pass. The roll assembly includes a paper roll 721, with both ends of the paper roll 721 rotatably connected to the upper ends of the two roll support rods 712. A roll of packaging paper is fitted over the paper roll 721; pulling one end of the packaging paper causes the paper roll 721 to rotate, releasing the packaging paper.

[0056] The glue application assembly includes a lifting frame, a glue application roller 731, a pressure roller 732, and a glue tank 734. A vertical connecting groove is provided on one side of the roller support rod 713, and the lifting frame is slidably installed in the connecting groove. The lifting frame includes multiple sliding plates 733 slidably installed in the connecting groove. The two ends of the glue application roller 731 are rotatably connected to the sliding plates 733, and the two ends of the pressure roller 732 are also rotatably connected to the sliding plates 733. The glue application roller 731 and the pressure roller 732 are parallel to each other. Packaging paper passes between the glue application roller 731 and the pressure roller 732 and abuts against both rollers. A limiting bolt 735 is connected to the sliding plate 733. The limiting bolt 735 is installed on the roller support rod 713 and threadedly connected to it. One end of the limiting bolt 735 abuts against the sliding plate 733, fixing the sliding plate 733 to the roller support rod 713. The glue tank 734 is located above the glue application roller 731. The glue tank 734 has a glue outlet at its bottom. A glue outlet valve is installed in the glue outlet. The glue outlet is connected to a guide plate, which guides the glue onto the glue application roller 731.

[0057] The cutting assembly includes a cutter 741, a vertical rod 742, a slide cylinder 743, a lever 745, a return spring 744, and a pedal 746. The vertical rod 742 is located below the operating platform 714 and is vertically installed. A sliding sleeve is slidably fitted onto the rod and fixed to the trolley 711. The cutter 741 is vertically aligned with the cutting groove and is fixed to the upper end of the vertical rod 742. The slide cylinder 743 is fixed to the lower end of the vertical rod 742. One end of the lever 745 is slidably fitted with the slide cylinder 743. The middle of the lever 745 is hinged to the operating platform 714. The pedal 746 is fixed to the end of the lever 745 away from the slide cylinder 743. The two ends of the return spring 744 are fixedly connected to the lever 745 and the trolley 711, respectively. When the foot pedal 746 is manually pressed, the lever 745 moves the upright 742 upward, pushing the cutter 741 out of the cutting groove and cutting the packaging paper. After the foot pedal is released, the lever 745 automatically resets under the action of the return spring 744, which in turn resets the upright 742 and the cutter 741. The cutter 741 then passes through the cutting groove and descends to the bottom of the cutting groove.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for detecting discontinuous charges, characterized in that, Includes the following steps: Drilling blasting holes: Drill blasting holes in the area where blasting is required using a drilling rig according to the designed blasting network; Packaging of explosive charges: Each section of the explosive charge is wrapped with a layer of conductive packaging paper; Explosive charge placement: Multiple explosive charge sections are placed into the blast hole in sequence. The packaging paper of the bottom explosive charge section is connected to the first wire (3), and the packaging paper of the top explosive charge section is connected to the second wire (4). Continuity test of explosive charge: Detect the resistance between the first wire (3) and the second wire (4). If the resistance between the first wire (3) and the second wire (4) does not meet the requirements, remove the explosive charge from the blast hole and lower it again. Then detect the resistance between the first wire (3) and the second wire (4) again until the resistance between the first wire (3) and the second wire (4) meets the requirements. Blasting: Seal the opening of the blast hole and detonate the topmost explosive charge; The bottom section of the explosive pack has a wire connector (5) installed on its packaging paper. The wire connector (5) is electrically connected to the packaging paper. One end of the first wire (3) is equipped with a connector (6). The connector (6) is connected to the wire connector (5) and electrically connected to the wire connector (5). The wire connector (5) includes a sleeve (51), the outer wall of which is fixedly connected to packaging paper. The side wall of the sleeve (51) is provided with a pin hole (52). A conductive plate (54) and a compression spring (55) are installed inside the sleeve (51). The two ends of the compression spring (55) are respectively fixedly connected to the conductive plate (54) and the lower end of the sleeve (51). The conductive plate (54) is movably connected to the sleeve (51). The conductive plate (54) is connected to the packaging paper through a third wire (56). The connector (6) is installed inside the sleeve (51) and electrically connected to the conductive plate (54). The connector (6) is provided with a limiting pin (62). One end of the limiting pin (62) extends into the pin hole (52). The connector (6) includes a connecting rod (61), which is installed inside the sleeve (51). Conductive plates (64) are respectively installed at both ends of the connecting rod (61). One conductive plate (64) abuts against the conductive plate (54), and the other conductive plate (64) is fixedly connected to the first wire (3). A cavity (65) is provided inside the connecting rod (61). An electromagnet (66) is installed inside the cavity (65). The two ends of the conductive winding of the electromagnet (66) are electrically connected to the two conductive plates (64). A sliding hole (67) is provided on the side wall of the cavity (65). One end of the limiting pin (62) is slidably installed in the sliding hole (67). A telescopic spring (63) is connected to one end of the limiting pin (62) located in the sliding hole (67). The sleeve (51) has a guide groove (53) on its side wall. The two ends of the guide groove (53) are respectively connected to the upper end of the sleeve (51) and the pin hole (52). The depth of the guide groove (53) gradually decreases from top to bottom.

2. The method for detecting discontinuous charges according to claim 1, characterized in that: In the packaging process of explosives, a packaging machine is used to wrap the packaging paper. The packaging machine includes a support assembly, a gluing assembly, a roll assembly, and a cutting assembly. The gluing assembly, roll assembly, and cutting assembly are all installed on the support assembly. The roll assembly and cutting assembly are respectively located on both sides of the gluing assembly. The packaging paper roll is placed on the roll assembly.

3. The method for detecting discontinuous charges according to claim 2, characterized in that: The glue application assembly includes a glue application roller (731), a pressing roller (732), and a glue tank (734). The glue application roller (731) and the pressing roller (732) are rotatably connected to the support assembly and are arranged in parallel. The packaging paper passes between the glue application roller (731) and the pressing roller (732) and abuts against the glue application roller (731) and the pressing roller (732) respectively. The glue tank (734) is located above the glue application roller (731), and a glue outlet is provided below the glue tank (734). A glue outlet valve is installed in the glue outlet.

4. The method for detecting discontinuous charges according to claim 3, characterized in that: The glue coating assembly is provided in two sets. The glue tanks (734) of the two sets of glue coating assemblies are respectively filled with glue A and glue B. Glue A and glue B can be mixed to form glue AB. The packaging paper passes through the glue coating roller (731) and the pressing roller (732) of the two sets of glue coating assemblies in sequence.

5. The method for detecting discontinuous charges according to claim 3, characterized in that: The adhesive application assembly also includes a lifting frame, which is slidably connected to the support assembly and can move up and down. The lifting frame is connected to a limit bolt (735), which is threadedly connected to the support assembly. One end of the limit bolt (735) can abut against the lifting frame and fix the lifting frame to the support assembly. The adhesive application roller (731) and the pressing roller (732) are both installed on the lifting frame.

Images