Mine blasting charging device and working method thereof

Abstract

The invention discloses a mine blasting charging device and a working method thereof, relates to the technical field of mine blasting charging devices, and aims to solve the problems that an explosive tube of an existing blasting charging device is arranged on the side edge of a sleeve to be fixed, and when the explosive quantity is large, the maximum diameter of the joint of the explosive tube and the device is likely to exceed the specified diameter range of a blast hole, so that use is affected. The round end cover plates are installed at the two ends of the bearing bottom plate, and lead through holes are formed in the round end cover plates; the strip-shaped groove is formed in the bearing bottom plate, medicine tube positioning carrying tables are arranged on the two sides of the upper portion of the bearing bottom plate, the two medicine tube positioning carrying tables are oppositely arranged, limiting clamping plates are arranged at the rear ends of the medicine tube positioning carrying tables, and the limiting clamping plates and the medicine tube positioning carrying tables are integrally formed; an elastic bandage is arranged on the outer wall of the medicine tube positioning carrying table, the elastic bandage is connected with the medicine tube positioning carrying table in a bonding mode, and a lead screw is installed at the lower end of the medicine tube positioning carrying table.

Description

Technical Field

[0001] The invention relates to the technical field of mine blasting charging devices, in particular to a mine blasting charging device and a working method thereof. Background Art

[0002] Blasting is a project that uses the huge pressure generated by the explosion of explosives in soil and rock media or objects to break soil and rock or objects. In order to achieve a good blasting effect, the mass of explosives required in the blasting process is usually calculated based on the soil quality and blasting area, and then according to the calculated amount of explosives, several blast holes for placing explosives are opened on the ground and explosives are installed in the blast holes. In order to achieve a better blasting effect, it is usually necessary to rely on a charging device to separate the charge tubes to achieve the effect of controlling the spacing.

[0003] Existing blasting charging devices, such as the one with announcement number CN113932672B and named as mining blasting charging device, include a plurality of mounting parts connected end to end in sequence, wherein the mounting parts include a mounting tube and a connecting tube fixed on the lower end surface of the mounting tube and parallel to the mounting tube, the connecting tube is passed through the corresponding mounting tube below, the upper end surface of the mounting tube is provided with a connecting part for fixing the connecting tube and preventing the connecting tube from moving relative to the mounting tube, and the mounting tube is provided with a supporting device for placing a medicine roll.

[0004] However, the existing blasting charging device has a charge tube fixed on the side of the casing. When the charge volume is large, the maximum diameter of the connection between the charge tube and the device is likely to exceed the specified diameter range of the blasthole, thus affecting the use. For this reason, we provide a mining blasting charging device and a working method thereof. Summary of the invention

[0005] The object of the present invention is to provide a mining blasting charging device and a working method thereof, so as to solve the problem proposed in the above background technology that the drug tube of the existing blasting charging device is fixed on the side of the casing, and when the amount of drug is large, the maximum diameter of the connection between the drug tube and the device is easy to exceed the specified diameter range of the blast hole, thereby affecting the use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A mine blasting charging device comprises a bearing bottom plate;

[0007] Also includes:

[0008] A circular end cover plate, which is installed at both ends of the bearing base plate, and a lead through hole is arranged inside the circular end cover plate;

[0009] A strip groove is arranged inside the bearing base plate, and medicine tube positioning platforms are arranged on both sides above the bearing base plate, and the two medicine tube positioning platforms are arranged opposite to each other. A limiting splint is arranged at the rear end of the medicine tube positioning platform, and the limiting splint and the medicine tube positioning platform are integrally formed, an elastic band is arranged on the outer wall of the medicine tube positioning platform, and the elastic band is bonded and connected to the medicine tube positioning platform, a screw rod is installed at the lower end of the medicine tube positioning platform, the lower end of the screw rod passes through and extends to the outside of the strip groove, and the medicine tube positioning platform is slidably connected to the strip groove through the screw rod, and a nut is installed at the connection between the screw rod and the strip groove.

[0010] Preferably, two water bag positioning rods are provided above both sides of the bearing base plate, and a composite explosion-proof water bag or a single-layer water-filled water bag is provided on the outer wall of the water bag positioning rod, and the inner walls on both sides of the composite explosion-proof water bag or the single-layer water-filled water bag are bonded and connected to the water bag positioning rod by double-sided tape.

[0011] Preferably, the composite explosion-proof water bag includes a first bag body and a second bag body, the second bag body is arranged on the inner wall of the first bag body, water is arranged inside the first bag body, and a supersaturated sodium acetate solution is arranged inside the second bag body.

[0012] Preferably, a metal sheet is provided on the inner wall of the second bag body, and the metal sheet is bonded to the second bag body.

[0013] Preferably, a pressing plate is provided on the inner wall of the metal sheet, an arc-shaped convex surface is provided on the outer wall of the pressing plate on a side facing the metal sheet, and the arc-shaped convex surface and the pressing plate are integrally formed.

[0014] Preferably, threading holes are provided inside both sides of the circular end cover plate, and pull ropes are provided at the front and rear ends of the pressure plate, and one end of the pull rope passes through and extends to the outside of the threading hole.

[0015] Preferably, a guide groove is provided on the inner side of the water bag positioning rod, and protrusions are provided on the upper and lower ends of the pressure plate, the protrusions extend into the inside of the guide groove, and the pressure plate is slidably connected to the guide groove on the water bag positioning rod through the protrusions.

[0016] Preferably, both ends of the water bag positioning rod are connected to the circular end cover plate by screws.

[0017] Preferably, a first pair of joints is provided at the middle position on the outer wall of the circular end cover plate at one end, and a second pair of joints is provided at the middle position on the outer wall of the circular end cover plate at the other end, positioning holes are provided inside the upper and lower ends of the first joints, and shrinkage grooves are provided inside the upper and lower ends of the second joints, and a locking block is installed inside the shrinkage groove, and the lower end of the locking block is connected to the shrinkage groove through a spring sheet.

[0018] Preferably, the working method of the mine blasting charging device comprises the following steps:

[0019] Step 1: When installing the drug tube, the staff first adjusts the distance between the two groups of drug tube positioning platforms above the bearing bottom plate according to the length of the drug tube, unlocks the nut on the screw rod at the lower end of the drug tube positioning platform during adjustment, and then slides along the strip groove to adjust the distance between the two drug tube positioning platforms. After completion, re-tighten the nut to fix the drug tube positioning platform. After completion, place the drug tube between the drug tube positioning platforms, and tie the two ends of the drug tube tightly with the elastic straps on the drug tube positioning platform. The drug tube uses water gel explosive;

[0020] Step 2: According to the ambient temperature, select a composite flameproof water bag or a single-layer water bag, place it on the outer wall of the water bag positioning rod on both sides of the charging device, fix it with double-sided tape, and slightly press the end of the composite flameproof water bag to make it tightly pressed against the pressure plate inside the water bag positioning rod. The composite flameproof water bag is composed of a first bag body and a second bag body. The first bag body and the second bag body are respectively filled with water and a supersaturated sodium acetate solution. After the water bag is installed, the charging work of a single drug tube is completed;

[0021] Step 3: Before blasting, personnel assemble a sufficient number of charging devices according to demand, and dock the appropriate number of charging devices end to end according to the depth of the blasthole. When docking, the second pair of connectors at the rear end of the charging device is inserted into the first pair of connectors at the front end of another charging device, and the positioning blocks on the second pair of connectors are used to cooperate with the contraction of the spring to engage in the positioning holes on the first pair of connectors. At the same time, the pull ropes at the front and rear ends of the pressure plate in the device are tied and fixed to achieve the end-to-end docking of the device, and the lead wire of the drug tube passes through the lead wire through hole on the circular end cover plate;

[0022] Step 4: Before blasting, put the assembled charging device into the blasthole, and pull the exposed pull ropes on the threading holes on both sides of the circular end cover plate outward to drive the pressing plate at the end of the water bag positioning rod of each charging device to slide along the guide groove, and use the arc convex surface on the outer side of the pressing plate to press the metal sheet of the inner layer of the composite explosion-proof water bag to cause it to deform and disturb the supersaturated sodium acetate solution in the second bag. Due to the instability of the supersaturated sodium acetate solution, it will quickly crystallize and release heat under the disturbance of the pressing plate, so that the temperature in the hole meets the use requirements of water gel explosives;

[0023] Step 5: During blasting, the charging device and the explosives are blown up together, and the water in the water bag plays a role in dust suppression.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention adopts a central charging structure. When installing the drug tube, the staff first adjusts the distance between the two groups of drug tube positioning platforms above the supporting bottom plate according to the length of the drug tube. During the adjustment, the nut on the screw rod at the lower end of the drug tube positioning platform is unlocked, and then the distance between the two drug tube positioning platforms is adjusted by sliding along the strip groove. After completion, the nut is re-tightened to fix the drug tube positioning platform, and the drug tube is placed between the drug tube positioning platforms, and the two ends of the drug tube are tied and fixed by the elastic bands on the drug tube positioning platforms. The whole process is convenient and fast, and is suitable for charging operations of drug tubes of different specifications. The drug tube is directly placed in the charging device, which effectively utilizes the space inside the device. It only needs to ensure that the diameter of the circular end cover plates at both ends of the device is smaller than the maximum diameter requirement of the blast hole of this construction. The problem that the drug tube of the existing blasting charging device is placed on the side of the casing and fixed, when the amount of medicine is large, the maximum diameter of the connection between the drug tube and the device is easy to exceed the specified diameter range of the blast hole, thereby affecting the use is solved.

[0026] 2. Since water gel explosives are much safer than ammonium acetate explosives, this application uses water gel explosives as the main explosive body. However, the explosive performance of water gel explosives will decrease as the temperature decreases. Residual explosion or explosion refusal may occur below 20 degrees. Therefore, in order to meet the temperature requirements of water gel explosives, composite flameproof water bag structures are provided on both sides of the device. The inner layer is a supersaturated sodium acetate solution. Due to the instability of the supersaturated sodium acetate solution itself, a crystallization reaction will occur after shock to release heat. The temperature can reach up to 54 degrees Celsius. The optimal operating temperature of water gel explosives is between 20 and 80 degrees Celsius. Therefore, before blasting, the exposed pull rope at the end of the device can be used to pull the pressure plate in the device to slide and apply pressure to the inner side of the composite flameproof water bag, so that the supersaturated sodium acetate solution inside reacts and releases heat, so as to meet the temperature requirements of water gel explosives when used in low-temperature environments, ensure the subsequent blasting effect, and improve the versatility of water gel explosives.

[0027] 3. By arranging a metal sheet on the inner wall of the composite flameproof water bag, and bonding the metal sheet to the second bag body, the metal sheet can, on the one hand, increase the bottom layer strength of the composite flameproof water bag, ensure the stability of the supersaturated sodium acetate solution in the second bag body during the transportation of the composite flameproof water bag, and avoid its premature crystallization and triggering reaction; on the other hand, in conjunction with the extrusion deformation of the arc-shaped convex surface of the pressing plate, it can better vibrate and disturb the supersaturated sodium acetate solution in the second bag body, so that it can fully react and release heat.

[0028] 4. The composite explosion-proof water bag of the present invention adopts a structural design in which water is filled on the outside and a supersaturated sodium acetate solution is filled on the inside. The supersaturated sodium acetate solution mainly meets the temperature requirement of the water gel explosive when in use through the exothermic reaction of crystallization, and the water mainly plays a dust suppression effect after the blasting of the explosive. Since each charging device is provided with two composite explosion-proof water bags, which are respectively enclosed on both sides of the explosive, the reliability of dust suppression can be ensured.

[0029] 5. The blasting charging device of the present invention has a front and rear combined structure. During blasting, a suitable number of charging devices can be assembled according to the depth of the blasthole. During docking, the second pair of joints at the rear end of the charging device is inserted into the first pair of joints at the front end of another charging device. The positioning blocks on the second pair of joints cooperate with the contraction effect of the spring to engage in the positioning holes on the first pair of joints. At the same time, the pull ropes at the front and rear ends of the pressure plate in the device are tied and fixed to achieve the head-to-tail docking of the device. The docking process does not require the aid of tools, which is convenient and efficient. After docking, the distance between the drug tubes can be effectively controlled to achieve a better blasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the back-end structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the bottom structure of the present invention;

[0033] Figure 4 It is a schematic diagram of the connection state structure of the present invention;

[0034] Figure 5 It is an enlarged schematic diagram of the structure at A of the present invention;

[0035] Figure 6 It is a schematic diagram of the internal structure of the second pair of joints of the present invention;

[0036] Figure 7 This is a schematic diagram of the internal structure of the composite explosion-proof water bag of the present invention;

[0037] In the figure: 1. load-bearing base plate; 2. circular end cover plate; 3. lead wire through hole; 4. drug tube positioning platform; 5. limit splint; 6. elastic bandage; 7. water bag positioning rod; 8. screw; 9. composite flameproof water bag; 901. first bag body; 902. second bag body; 903. water; 904. supersaturated sodium acetate solution; 905. metal sheet; 10. threading hole; 11. first pair of joints; 12. positioning hole; 13. second pair of joints; 14. positioning block; 15. pressure plate; 151. arc convex surface; 152. convex block; 16. pull rope; 17. strip groove; 18. screw rod; 19. nut; 20. guide groove; 21. contraction groove; 22. spring. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Embodiment 1:

[0040] See also Figure 1-7 , a mine blasting charging device, comprising a bearing bottom plate 1;

[0041] Also includes:

[0042] A circular end cover plate 2 is mounted on both ends of the bearing base plate 1, and a lead through hole 3 is provided inside the circular end cover plate 2;

[0043] The strip groove 17 is arranged inside the bearing base plate 1, and the two sides above the bearing base plate 1 are provided with drug tube positioning platforms 4, and the two drug tube positioning platforms 4 are arranged opposite to each other. A limiting splint 5 is arranged at the rear end of the drug tube positioning platform 4, and the limiting splint 5 and the drug tube positioning platform 4 are integrally formed. An elastic band 6 is arranged on the outer wall of the drug tube positioning platform 4, and the elastic band 6 is bonded and connected to the drug tube positioning platform 4. A screw rod 18 is installed at the lower end of the drug tube positioning platform 4, and the lower end of the screw rod 18 passes through and extends to the outside of the strip groove 17, and the drug tube positioning platform 4 is slidably connected to the strip groove 17 through the screw rod 18, and a nut 19 is installed at the connection between the screw rod 18 and the strip groove 17.

[0044] See also Figure 1 and Figure 7 Two water bag positioning rods 7 are arranged above both sides of the bearing bottom plate 1, and a composite flameproof water bag 9 is arranged on the outer wall of the water bag positioning rod 7, and the inner walls on both sides of the composite flameproof water bag 9 are bonded and connected to the water bag positioning rod 7 by double-sided adhesive. The composite flameproof water bag 9 includes a first bag body 901 and a second bag body 902, and the second bag body 902 is arranged on the inner wall of the first bag body 901. Water 903 is arranged inside the first bag body 901, and supersaturated sodium acetate solution 904 is arranged inside the second bag body 902. The composite flameproof water bag 9 adopts a structural design in which water 903 is filled on the outside and supersaturated sodium acetate solution 904 is filled on the inside, wherein water 903 mainly plays a role in suppressing the explosion of explosives. Dust effect, because each charging device is provided with two composite flameproof water bags 9, which are respectively enclosed on both sides of the explosive, the reliability of dust suppression can be ensured. At present, the safety of water gel explosives is much higher than that of ammonium hydroxide explosives, but the explosion performance of water gel explosives will decrease with the decrease of temperature. Residual explosion or explosion refusal may occur below 20 degrees. Therefore, in order to meet the temperature requirements of water gel explosives, the inner layer of the composite flameproof water bag 9 is a supersaturated sodium acetate solution 904. Due to its own instability, it will produce a crystallization reaction after shock and release heat. The temperature can reach up to 54 degrees Celsius. The optimal operating temperature of water gel explosives is under the condition of 20-80 degrees Celsius, so it can meet the temperature requirements of water gel explosives when used.

[0045] See also Figure 2 and Figure 7A metal sheet 905 is arranged on the inner wall of the second bag body 902, and the metal sheet 905 is bonded and connected to the second bag body 902. A pressing plate 15 is arranged on the inner wall of the metal sheet 905. An arc-shaped convex surface 151 is arranged on the outer wall of the pressing plate 15 facing the metal sheet 905, and the arc-shaped convex surface 151 and the pressing plate 15 are integrally formed. On the one hand, the metal sheet 905 can ensure the stability of the supersaturated sodium acetate solution 904 in the second bag body 902 during the transportation of the composite explosion-proof water bag 9 to avoid its premature crystallization and triggering reaction. On the other hand, the extrusion deformation of the arc-shaped convex surface 151 of the pressing plate 15 can better oscillate and disturb the supersaturated sodium acetate solution 904 in the second bag body 902, so that it can fully react and release heat.

[0046] See also Figure 2 , threading holes 10 are provided inside both sides of the circular end cover plate 2, and pull ropes 16 are provided at the front and rear ends of the pressure plate 15, and one end of the pull rope 16 passes through and extends to the outside of the threading hole 10. When the charging device is docked and installed, the pull ropes 16 at the front and rear ends of the pressure plates 15 of adjacent charging devices are tied and connected, and the tying section is smaller than the diameter of the threading hole 10, which is convenient for pulling the pull rope 16 after the charging device enters the blast hole, so as to drive the pressure plate 15 to slide and apply pressure to the composite explosion-proof water bag 9, so that the supersaturated sodium acetate solution 904 inside it reacts.

[0047] See also Figure 5 A guide groove 20 is provided on the inner side of the water bag positioning rod 7, and protrusions 152 are provided on the upper and lower ends of the pressure plate 15. The protrusions 152 extend into the inside of the guide groove 20, and the pressure plate 15 is slidably connected with the guide groove 20 on the water bag positioning rod 7 through the protrusions 152. When the pressure plate 15 is moved by the tension, it can slide along the guide groove 20 on the water bag positioning rod 7 through the protrusions 152 at the upper and lower ends, thereby stably and continuously applying pressure to the inner side of the composite explosion-proof water bag 9.

[0048] See also Figure 1 The two ends of the water bag positioning rod 7 are connected to the circular end cover plate 2 by screws 8, which is convenient for assembly after the device is produced.

[0049] See also Figure 1-6A first pair of joints 11 is provided at the middle position on the outer wall of the circular end cover plate 2 at one end, and a second pair of joints 13 is provided at the middle position on the outer wall of the circular end cover plate 2 at the other end. Positioning holes 12 are provided inside the upper and lower ends of the first pair of joints 11, and shrinkage grooves 21 are provided inside the upper and lower ends of the second pair of joints 13. A positioning block 14 is installed inside the shrinkage groove 21, and the lower end of the positioning block 14 is connected to the shrinkage groove 21 through a spring leaf 22. During blasting, a suitable number of charging devices can be assembled according to the depth of the blasthole. During docking, the second pair of joints 13 at the rear end of the charging device is inserted into the first pair of joints 11 at the front end of the other charging device, and the positioning blocks 14 on the second pair of joints 13 are used to cooperate with the shrinkage effect of the spring leaf 22 to engage in the positioning holes 12 on the first pair of joints 11. At the same time, the pull ropes 16 at the front and rear ends of the pressure plate 15 in the device are tied and fixed to achieve the head-to-tail docking of the device. The docking process does not require the aid of tools, which is convenient and efficient.

[0050] See also Figure 1-7 The working method of the mine blasting charging device comprises the following steps:

[0051] Step 1: When installing the drug tube, the staff first adjusts the distance between the two groups of drug tube positioning platforms 4 above the supporting base plate 1 according to the length of the drug tube, unlocks the nut 19 on the screw rod 18 at the lower end of the drug tube positioning platform 4 during adjustment, and then slides along the strip groove 17 to adjust the distance between the two drug tube positioning platforms 4. After completion, re-tighten the nut 19 to fix the drug tube positioning platform 4. After completion, place the drug tube between the drug tube positioning platforms 4, and fasten and fix the two ends of the drug tube with the elastic band 6 on the drug tube positioning platform 4. The drug tube uses water gel explosive;

[0052] Step 2: According to the ambient temperature, if the current ambient temperature is less than 20 degrees Celsius, select the composite flameproof water bag 9 and place it on the outer wall of the water bag positioning rod 7 on both sides of the charging device, fix it with double-sided tape, and slightly press the end of the composite flameproof water bag 9 to make it tightly pressed against the pressure plate 15 on the inner side of the water bag positioning rod 7. The composite flameproof water bag 9 is composed of a first bag body 901 and a second bag body 902. The first bag body 901 and the second bag body 902 are respectively filled with water 903 and a supersaturated sodium acetate solution 904. After the water bag is installed, the charging work of the single drug tube is completed;

[0053] Step 3: Before blasting, personnel assemble a sufficient number of charging devices according to demand, and dock the appropriate number of charging devices end to end according to the depth of the blasthole. When docking, the second pair of joints 13 at the rear end of the charging device is inserted into the first pair of joints 11 at the front end of another charging device, and the positioning blocks 14 on the second pair of joints 13 are used to cooperate with the contraction of the spring 22 to be engaged in the positioning holes 12 on the first pair of joints 11. At the same time, the pull ropes 16 at the front and rear ends of the pressure plate 15 in the device are tied and fixed to achieve the end-to-end docking of the device, and the lead wire of the drug tube passes through the lead wire through hole 3 on the circular end cover plate 2;

[0054] Step 4: Before blasting, put the assembled charge device into the blasthole, and stretch the exposed drawstring 16 on the threading holes 10 on both sides of the circular end cover plate 2 outward, so as to drive the pressing plate 15 at the end of the water bag positioning rod 7 of each charge device to slide along the guide groove 20, and use the arc convex surface 151 on the outer side of the pressing plate 15 to press the metal sheet 905 of the inner layer of the composite explosion-proof water bag 9 to cause it to deform and disturb the supersaturated sodium acetate solution 904 in the second bag body 902. Due to the instability of the supersaturated sodium acetate solution 904, it will quickly crystallize and release heat under the disturbance of the pressing plate 15, so that the temperature in the hole meets the use requirements of water gel explosives;

[0055] Step 5: During blasting, the charge device is blown up together with the explosives, and the water 903 in the composite flameproof water bag 9 plays a role in dust suppression.

[0056] Example 2

[0057] A mine blasting charging device comprises a bearing base plate 1;

[0058] Also includes:

[0059] A circular end cover plate 2 is mounted on both ends of the bearing base plate 1, and a lead through hole 3 is provided inside the circular end cover plate 2;

[0060] The strip groove 17 is arranged inside the bearing base plate 1, and the two sides above the bearing base plate 1 are provided with drug tube positioning platforms 4, and the two drug tube positioning platforms 4 are arranged opposite to each other. A limiting splint 5 is arranged at the rear end of the drug tube positioning platform 4, and the limiting splint 5 and the drug tube positioning platform 4 are integrally formed. An elastic band 6 is arranged on the outer wall of the drug tube positioning platform 4, and the elastic band 6 is bonded and connected to the drug tube positioning platform 4. A screw rod 18 is installed at the lower end of the drug tube positioning platform 4, and the lower end of the screw rod 18 passes through and extends to the outside of the strip groove 17, and the drug tube positioning platform 4 is slidably connected to the strip groove 17 through the screw rod 18, and a nut 19 is installed at the connection between the screw rod 18 and the strip groove 17.

[0061] Furthermore, two water bag positioning rods 7 are provided above both sides of the supporting base plate 1, and a single-layer water bag is provided on the outer wall of the water bag positioning rod 7, and the inner walls on both sides of the single-layer water bag are bonded and connected to the water bag positioning rod 7 by double-sided tape.

[0062] Further, the working method of the mine blasting charging device comprises the following steps:

[0063] Step 1: When installing the drug tube, the staff first adjusts the distance between the two groups of drug tube positioning platforms 4 above the supporting base plate 1 according to the length of the drug tube, unlocks the nut 19 on the screw rod 18 at the lower end of the drug tube positioning platform 4 during adjustment, and then slides along the strip groove 17 to adjust the distance between the two drug tube positioning platforms 4. After completion, re-tighten the nut 19 to fix the drug tube positioning platform 4. After completion, place the drug tube between the drug tube positioning platforms 4, and fasten and fix the two ends of the drug tube with the elastic band 6 on the drug tube positioning platform 4. The drug tube uses water gel explosive;

[0064] Step 2: According to the ambient temperature, if the current ambient temperature is greater than 20 degrees Celsius, a single-layer water bag is selected and placed on the outer wall of the water bag positioning rod 7 on both sides of the charging device, and fixed with double-sided tape. After the water bag is installed, the charging of a single drug tube is completed;

[0065] Step 3: Before blasting, personnel assemble a sufficient number of charging devices according to demand, and dock the appropriate number of charging devices end to end according to the depth of the blasthole. When docking, the second pair of joints 13 at the rear end of the charging device is inserted into the first pair of joints 11 at the front end of another charging device, and the positioning blocks 14 on the second pair of joints 13 are used to cooperate with the contraction of the spring 22 to be engaged in the positioning holes 12 on the first pair of joints 11. At the same time, the pull ropes 16 at the front and rear ends of the pressure plate 15 in the device are tied and fixed to achieve the end-to-end docking of the device, and the lead wire of the drug tube passes through the lead wire through hole 3 on the circular end cover plate 2;

[0066] Step 4: During blasting, the charge device is blown up together with the explosives, and the water in the single-layer water bag plays a role in dust suppression.

[0067] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mine blasting charging device, comprising a bearing base plate (1); Features: Also includes: A circular end cover plate (2) is mounted on both ends of the bearing base plate (1), and a lead through hole (3) is provided inside the circular end cover plate (2); A strip groove (17) is arranged inside the bearing base plate (1), and medicine tube positioning platforms (4) are arranged on both sides above the bearing base plate (1), and the two medicine tube positioning platforms (4) are arranged opposite to each other. A limiting clamp (5) is arranged at the rear end of the medicine tube positioning platform (4), and the limiting clamp (5) and the medicine tube positioning platform (4) are integrally formed. An elastic band (6) is arranged on the outer wall of the medicine tube positioning platform (4), and the elastic band (6) is bonded and connected to the medicine tube positioning platform (4). A screw rod (18) is installed at the lower end of the medicine tube positioning platform (4), and the lower end of the screw rod (18) passes through and extends to the outside of the strip groove (17), and the medicine tube positioning platform (4) is slidably connected to the strip groove (17) through the screw rod (18), and a nut (19) is installed at the connection between the screw rod (18) and the strip groove (17).

2. The mine blasting charging device according to claim 1, characterized in that: Two water bag positioning rods (7) are arranged above both sides of the bearing bottom plate (1), and a composite flameproof water bag (9) or a single-layer water filling water bag is arranged on the outer wall of the water bag positioning rod (7), and the inner walls on both sides of the composite flameproof water bag (9) or the single-layer water filling water bag are bonded and connected to the water bag positioning rod (7) by double-sided adhesive.

3. The mine blasting charging device according to claim 2, characterized in that: The composite explosion-proof water bag (9) comprises a first bag body (901) and a second bag body (902), wherein the second bag body (902) is arranged on the inner wall of the first bag body (901), water (903) is arranged inside the first bag body (901), and a supersaturated sodium acetate solution (904) is arranged inside the second bag body (902).

4. The mine blasting charging device according to claim 3, characterized in that: A metal sheet (905) is provided on the inner wall of the second bag body (902), and the metal sheet (905) is bonded and connected to the second bag body (902).

5. The mine blasting charging device according to claim 4, characterized in that: A pressing plate (15) is arranged on the inner wall of the metal sheet (905), and an arc-shaped convex surface (151) is arranged on the outer wall of the pressing plate (15) facing the metal sheet (905), and the arc-shaped convex surface (151) and the pressing plate (15) are integrally formed.

6. The mine blasting charging device according to claim 5, characterized in that: Both sides of the circular end cover plate (2) are provided with threading holes (10), and the front and rear ends of the pressure plate (15) are provided with pull ropes (16), and one end of the pull rope (16) passes through and extends to the outside of the threading hole (10).

7. The mine blasting charging device according to claim 6, characterized in that: A guide groove (20) is provided on the inner side of the water bag positioning rod (7), and protrusions (152) are provided on the upper and lower ends of the pressure plate (15), the protrusions (152) extend into the interior of the guide groove (20), and the pressure plate (15) is slidably connected to the guide groove (20) on the water bag positioning rod (7) via the protrusions (152).

8. The mine blasting charging device according to claim 7, characterized in that: The two ends of the water bag positioning rod (7) are connected to the circular end cover plate (2) via screws (8).

9. The mine blasting charging device according to claim 8, characterized in that: A first pair of joints (11) is provided at a middle position on the outer wall of the circular end cover plate (2) at one end, and a second pair of joints (13) is provided at a middle position on the outer wall of the circular end cover plate (2) at the other end. Positioning holes (12) are provided inside the upper and lower ends of the first pair of joints (11), and contraction grooves (21) are provided inside the upper and lower ends of the second pair of joints (13). A positioning block (14) is installed inside the contraction groove (21), and the lower end of the positioning block (14) is connected to the contraction groove (21) via a spring sheet (22).

10. A working method of a mine blasting charging device, implemented based on the mine blasting charging device according to claim 9, characterized in that: The following steps are involved: Step 1: When installing the drug tube, the staff first adjusts the distance between the two groups of drug tube positioning platforms (4) above the bearing base plate (1) according to the length of the drug tube, unlocks the nut (19) on the screw rod (18) at the lower end of the drug tube positioning platform (4) during the adjustment, and then slides along the strip groove (17) to adjust the distance between the two drug tube positioning platforms (4). After completion, the nut (19) is re-tightened to fix the drug tube positioning platform (4). After completion, the drug tube is placed between the drug tube positioning platforms (4), and the two ends of the drug tube are tied and fixed by the elastic band (6) on the drug tube positioning platform (4). The drug tube uses water gel explosive; Step 2: According to the ambient temperature, a composite flameproof water bag (9) or a single-layer water-filled water bag is selected and placed on the outer wall of the water bag positioning rod (7) on both sides of the charging device, fixed by double-sided adhesive, and slightly pressed on the end of the composite flameproof water bag (9) so that it is tightly pressed against the pressure plate (15) on the inner side of the water bag positioning rod (7). The composite flameproof water bag (9) is composed of a first bag body (901) and a second bag body (902). The first bag body (901) and the second bag body (902) are respectively filled with water (903) and a supersaturated sodium acetate solution (904). After the water bag is installed, the charging work of the single drug tube is completed; Step 3: Before blasting, personnel assemble a sufficient number of charging devices according to demand, and according to the depth of the blasthole, dock the appropriate number of charging devices end to end. When docking, the second pair of connectors (13) at the rear end of the charging device is inserted into the first pair of connectors (11) at the front end of another charging device, and the positioning blocks (14) on the second pair of connectors (13) are used to cooperate with the contraction effect of the spring (22) to engage in the positioning holes (12) on the first pair of connectors (11). At the same time, the pull ropes (16) at the front and rear ends of the pressure plate (15) in the device are tied and fixed to achieve the end-to-end docking of the device, and the lead wire of the drug tube is passed through the lead wire through hole (3) on the circular end cover plate (2); Step 4: before blasting, the assembled charge device is placed along the blast hole, and the exposed pull rope (16) on the threading holes (10) on both sides of the circular end cover plate (2) is stretched outward to drive the pressing plate (15) at the end of the water bag positioning rod (7) of each group of charge device to slide along the guide groove (20), and the arc-shaped convex surface (151) outside the pressing plate (15) is used to apply pressure to the metal sheet (905) of the inner layer of the composite explosion-proof water bag (9), so that it is deformed and disturbs the supersaturated sodium acetate solution (904) in the second bag body (902). Due to the instability of the supersaturated sodium acetate solution (904), it will quickly crystallize and release heat under the disturbance of the pressing plate (15), so that the temperature in the hole meets the use requirements of water gel explosives; Step 5: During blasting, the charge device and the explosive are blown up together, and the water (903) in the water bag plays a role in dust suppression.

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