A bench blasting device for open-pit mines

Abstract

This invention discloses a bench blasting device for open-pit mines, relating to the field of blasting technology. It includes an outer cylinder and an inner cylinder, with the outer cylinder fitted over the outer side of the inner cylinder. The inner cylinder has several clamping mechanisms arranged at equal angles along its length. Each clamping mechanism includes several clamping members evenly arranged along the length of the inner cylinder. Each clamping member includes a movable pin, a first baffle, a second baffle, a spring, and a clamping plate. The movable pin is fixedly connected to the clamping plate. The inner cylinder has several through holes. The first baffle is fixedly connected to the movable pin, and the second baffle is rotatably connected to the inner cylinder. The movable pin passes through the first baffle, the second baffle, and the outer cylinder. The spring is located between and fixedly connected to the first and second baffles. A protrusion is fixedly connected to the movable pin. The inner cylinder has a sliding groove and an arc groove that are adapted to the protrusion and communicate with the through holes. The arc groove communicates with the sliding groove and is located at the end of the sliding groove furthest from the outer cylinder. This invention facilitates accurate placement of explosive cartridges.

Description

Technical Field

[0001] This invention relates to the field of blasting technology, and in particular to a bench blasting device for open-pit mines. Background Technology

[0002] When mining in open-pit mines, bench blasting technology is often used. Before blasting, holes need to be drilled in the open-pit mine, and then explosives are placed in the holes. The explosives can be divided into coupled explosives and uncoupled explosives. Uncoupled explosives are explosives with a diameter smaller than the diameter of the hole, and there is a gap between the explosive and the inner wall of the hole. The blasting of uncoupled explosives mainly relies on the spacer medium to achieve energy transfer.

[0003] Due to the different sizes of the explosive cartridge and the borehole, the existing charging process for decoupled explosives is often done manually. The manual placement of the explosive cartridge into the borehole not only has a low safety factor, but also makes it difficult to position the explosive cartridge. The explosive cartridge is prone to displacement or tilting, making it impossible to place the explosive cartridge in the expected position, thus affecting the blasting effect. Summary of the Invention

[0004] To facilitate accurate placement of explosive charges, this application provides an open-pit mine bench blasting device, employing the following technical solution:

[0005] An open-pit mine bench blasting device includes an outer cylinder and an inner cylinder. The outer cylinder is sleeved on the outside of the inner cylinder. The inner cylinder is provided with several clamping mechanisms arranged at equal angles along the inner cylinder. Each clamping mechanism includes several clamping members evenly arranged along the length of the inner cylinder. Each clamping member includes a movable pin, a first baffle, a second baffle, a spring, and a clamping plate. The movable pin is fixedly connected to the clamping plate. The inner cylinder has several through holes. The first baffle is fixedly connected to the movable pin. The second baffle is rotatably connected to the inner cylinder. The movable pin passes through the first baffle, the second baffle, and the outer cylinder. The spring is located between the first baffle and the second baffle and is fixedly connected to the first baffle and the second baffle. The movable pin is fixedly connected to a protrusion. The inner cylinder has a sliding groove and an arc groove that are adapted to the protrusion and communicate with the through holes. The arc groove communicates with the sliding groove and is located at the end of the sliding groove away from the outer cylinder. The outer cylinder is provided with a driving member for moving the movable pin.

[0006] By adopting the above technical solution, the driving component drives the moving pin to rotate. When the moving pin moves away from the outer cylinder, it can drive the clamping plate to move towards the axis of the inner cylinder, placing the cartridge inside the inner cylinder. The clamping plate can hold the cartridge, and the spring is in a stretched state. When the moving pin moves along the length of the through hole, the protrusion moves in the sliding groove. Rotating the moving pin causes the protrusion to enter the arc groove, which limits the protrusion and keeps the spring in a stretched state, allowing the clamping plate to hold the cartridge. After the outer cylinder, inner cylinder, and cartridge are placed inside the borehole, the driving component drives the moving pin to rotate. The moving pin moves towards the outer cylinder under the elastic force of the spring, and the clamping plate releases its grip on the cartridge. The operator can then remove the outer cylinder and inner cylinder. At this time, the cartridge is placed vertically and does not contact the inner wall of the borehole, making it convenient to place the cartridge accurately.

[0007] Optionally, several arc grooves are provided, all of which are connected to the sliding groove, and the arc grooves are parallel to each other and arranged along the length direction of the through hole.

[0008] By adopting the above technical solution, the protrusions can enter different arc grooves, so that the diameter of the virtual circle formed by all the clamping plates is different, so as to adapt to different sizes of medicine rolls and facilitate the clamping and placement of different medicine rolls.

[0009] Optionally, the driving component includes several gears and several racks, all of which are slidably connected to the inner cylinder. Each gear corresponds to and is fixedly connected to a movable pin, and each rack corresponds to a clamping mechanism. Gears connected to the same clamping mechanism mesh with the same rack.

[0010] By adopting the above technical solution, the rack moves, driving gear one in the same clamping mechanism to rotate. Gear one drives the moving pin to rotate, so that the moving pin of the clamping mechanism in the same clamping mechanism rotates synchronously and enters the corresponding arc groove for positioning.

[0011] Optionally, the outer cylinder is internally threaded with a sleeve, and the upper end of the rack is fixedly connected with a fixing block. The lower end of the sleeve is provided with an annular groove that matches the fixing block and a through groove that matches the rack. The rack is fixedly connected with a limit strip, and the outer cylinder is provided with a limit groove that matches the limit strip.

[0012] By adopting the above technical solution, when the sleeve rotates, it can rotate relative to the outer cylinder and move vertically. The annular groove limits the fixed block, so that the rack moves vertically with the sleeve. The limiting groove limits the limiting strip, so that the rack does not rotate with the sleeve, thus ensuring the meshing of the rack and gear.

[0013] Optionally, the outer cylinder is provided with a cylindrical part on the outside of the outer cylinder, and a number of pushing parts are provided at equal angles along the circumference of the cylindrical part. The pushing parts include a screw, a movable cylinder and a push plate. The movable cylinder is fixedly connected to the push plate. The movable cylinder is sleeved on the outside of the screw and threadedly connected to the screw. The cross-section of the movable cylinder is not circular and is slidably connected to the cylindrical part. The push plate corresponds to the clamping mechanism one by one.

[0014] By adopting the above technical solution, when the screw rotates, the moving cylinder moves along the length of the screw, so that the push plate moves with the moving cylinder. The push plate then abuts against the moving pin, which can drive the moving pin of the same clamping mechanism to move synchronously along the length of the through hole.

[0015] Optionally, each screw is fixedly connected to a second gear, and the cylinder is rotatably connected to a second sleeve. The lower end of the second sleeve is fixedly connected to an end face gear, and each second gear meshes with the end face gear.

[0016] By adopting the above technical solution, the second sleeve can drive all the second gears to rotate through the end face gear, thereby driving all the screws to rotate, so that the push plate drives the moving pin to move.

[0017] Optionally, the upper end of the cylinder is detachably connected to an extension cylinder, the lower end of the extension cylinder is fixedly connected to a connecting rod, the lower end of the connecting rod is fixedly connected to a connecting block, the cylinder has a connecting hole and a connecting groove 1 that are adapted to the connecting block, the cylinder has a connecting groove 2 that is adapted to the connecting rod, the connecting groove 2 and the connecting groove 1 are interconnected, the connecting hole is located at one end of the connecting groove 1 and is connected to both the connecting groove 1 and the connecting groove 2, and the extension cylinder is provided with a connecting member 1 for driving the sleeve 1 to rotate and a connecting member 2 for driving the sleeve 2 to rotate.

[0018] By adopting the above technical solution, the extension tube can be connected to the cylinder, making it easier for workers to place the propellant cartridge in deeper blast holes. At the same time, connector one and connector two can drive sleeve one and sleeve two to rotate, making it easy to release the clamp on the propellant cartridge and take out the extension tube, outer cylinder and inner cylinder after the propellant cartridge is placed.

[0019] Optionally, the connecting component one includes a rotating cylinder one and several telescopic rods. The rotating cylinder one is rotatably connected to the inside of the extension cylinder, and the telescopic rods are fixedly connected circumferentially along the lower end of the rotating cylinder. The upper end of the sleeve one is provided with several round holes that are adapted to the telescopic rods.

[0020] By adopting the above technical solution, the lower end of the telescopic rod is inserted into the cylinder. When the rotating cylinder rotates, it can drive the telescopic rod to rotate, thereby causing the sleeve to rotate and completing the driving of the driving component.

[0021] Optionally, the second connecting member includes a second rotating cylinder, a moving rod, and a moving block. The moving rod is fixedly connected to the lower end of the second rotating cylinder, and the moving block is fixedly connected to the lower end of the moving rod. The second sleeve has a first moving groove and a second moving hole that are adapted to the moving block. The second sleeve also has a second moving groove that is adapted to the moving rod. The first moving groove and the second moving groove are interconnected. The moving hole is located at one end of the first moving groove and is connected to both the first moving groove and the second moving groove.

[0022] By adopting the above technical solution, the moving block enters the moving groove one through the moving hole, and the rotating cylinder two is rotated, so that the moving block enters the moving groove two. The moving groove two limits the moving block, so that the sleeve two can rotate with the rotating cylinder two, thereby realizing the driving of the driving component two.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The driving component drives the moving pin to rotate. When the moving pin moves away from the outer cylinder, it can drive the clamping plate to move towards the axis of the inner cylinder, placing the cartridge inside the inner cylinder. The clamping plate can hold the cartridge, and the spring is in a stretched state. When the moving pin moves along the length of the through hole, the protrusion moves in the sliding groove. Rotating the moving pin causes the protrusion to enter the arc groove, which limits the protrusion and keeps the spring in a stretched state, allowing the clamping plate to hold the cartridge. After the outer cylinder, inner cylinder, and cartridge are placed inside the borehole, the driving component drives the moving pin to rotate. The moving pin moves towards the outer cylinder under the elastic force of the spring, and the clamping plate releases its grip on the cartridge. The operator can then remove the outer cylinder and inner cylinder. At this time, the cartridge is placed vertically and does not contact the inner wall of the borehole, making it convenient to place the cartridge accurately.

[0025] 2. The protrusions can enter different arc grooves, so that the diameter of the virtual circle formed by all the clamping plates is different, in order to accommodate different sizes of medicine rolls, making it easier to clamp and place different medicine rolls;

[0026] 3. The rack moves, causing gear one in the same clamping mechanism to rotate. Gear one drives the moving pin to rotate, so that the moving pins of the clamping mechanisms in the same clamping mechanism rotate synchronously and enter the corresponding arc groove for positioning. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a bench blasting device for open-pit mines.

[0028] Figure 2 This is a cross-sectional schematic diagram of a bench blasting device for open-pit mines.

[0029] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0030] Figure 4 This is an exploded diagram designed to highlight the arc groove and the slide.

[0031] Figure 5 yes Figure 2 Enlarged diagram of part B.

[0032] Figure 6 This is a schematic diagram of the connection structure between the extension tube and the cylinder.

[0033] Figure 7 This is a structural schematic diagram of connector two.

[0034] Explanation of reference numerals in the attached drawings: 1. Outer cylinder; 2. Inner cylinder; 21. Through hole; 22. Sliding groove; 23. Arc groove; 3. Clamping component; 31. Moving pin; 311. Protrusion; 32. First baffle; 33. Second baffle; 34. Spring; 35. Clamping plate; 4. First driving component; 41. First gear; 42. Rack; 421. Fixing block; 422. Limiting strip; 43. First sleeve; 431. Annular groove; 432. Through groove; 433. Limiting groove; 5. Cylinder; 51. Pushing component; 511. Screw 512. Rod; 513. Moving cylinder; 514. Push plate; 515. Gear II; 516. Sleeve II; 517. End face gear; 52. Connecting hole; 53. Connecting groove I; 6. Extension cylinder; 61. Connecting rod; 62. Connecting block; 63. Connecting groove II; 7. Connecting component I; 71. Rotating cylinder I; 72. Telescopic rod; 73. Round hole; 8. Connecting component II; 81. Rotating cylinder II; 82. Moving rod; 83. Moving block; 84. Moving groove I; 85. Moving hole; 86. Moving groove II. Detailed Implementation

[0035] The present application will be further described in detail below with reference to all the accompanying drawings.

[0036] This application discloses a bench blasting device for open-pit mines.

[0037] Reference Figure 1 and Figure 2 An open-pit mine bench blasting device includes an outer cylinder 1 and an inner cylinder 2. The outer cylinder 1 is sleeved on the outside of the inner cylinder 2, and the inner cylinder 2 is hollow. The explosive cartridge is placed inside the inner cylinder 2. The inner cylinder 2 is provided with several clamping mechanisms arranged at equal angles along the inner cylinder 2. The clamping mechanisms can clamp the explosive cartridge, so that when the outer cylinder 1 and the inner cylinder 2 enter the blast hole, they can wrap the explosive cartridge together and enter the blast hole. After the clamping mechanisms release the clamping mechanism on the explosive cartridge, the outer cylinder 1 and the inner cylinder 2 are pulled upwards, and the explosive cartridge can be placed in the blast hole. The positioning of the explosive cartridge is relatively accurate, and the inner cylinder 2 and the outer cylinder 1 can play a protective role during the process of sending the explosive cartridge into the blast hole, which helps to improve the safety of the installation process.

[0038] Reference Figure 2 and Figure 3 The clamping mechanism includes several clamping members 3 evenly arranged along the length of the inner cylinder 2. The clamping members 3 can clamp the medicine roll at different positions along the length of the medicine roll, making the clamping mechanism clamp the medicine roll more stably. The clamping member 3 includes a movable pin 31, a first baffle 32, a second baffle 33, a spring 34, and a clamping plate 35. The inner cylinder 2 has several through holes 21. The movable pin 31 is located in the through hole 21 and can move along the length of the through hole 21. The movable pin 31 is fixedly connected to the clamping plate 35. When the movable pin 31 moves, it can drive the clamping plate 35 to move together. The clamping plate 35 moves towards the medicine roll and can come into contact with the medicine roll and clamp it.

[0039] Reference Figure 2 and Figure 3 Baffle 1 32 is fixedly connected to movable pin 31. When movable pin 31 moves, baffle 1 32 moves together with movable pin 31. Baffle 2 33 is rotatably connected to inner cylinder 2. The diameter of baffle 2 33 is larger than the diameter of through hole 21. Inner cylinder 2 limits baffle 2 33, making it difficult for baffle 2 33 to move along the length direction of through hole 21. Baffle 1 32 is located on the side of baffle 2 33 away from outer cylinder 1. Movable pin 31 is installed through baffle 1 32 and baffle 2 33. Spring 34 is located between baffle 1 32 and baffle 2 33 and is fixedly connected to baffle 1 32 and baffle 2 33. When movable pin 31 drives baffle 1 32 to move, spring 34 is stretched. Movable pin 31 and baffle 1 32 can be reset under the elastic force of spring 34.

[0040] Reference Figure 3 and Figure 4 The movable pin 31 is fixedly connected to the protrusion 311. The inner cylinder 2 has a sliding groove 22 and an arc groove 23 that are adapted to the protrusion 311 and connected to the through hole 21. The sliding groove 22 is arranged along the length direction of the through hole 21. When the movable pin 31 moves in the through hole 21, the protrusion 311 moves in the sliding groove 22. The arc groove 23 is arranged around the through hole 21. The arc groove 23 is connected to the sliding groove 22 and is located at the end of the sliding groove 22 away from the outer cylinder 1. When the protrusion 311 moves along the sliding groove 22 to the point where the sliding groove 22 and the arc groove 23 are connected, rotating the movable pin 31 can make the movable pin 31 enter the arc groove 23. The arc groove 23 limits the protrusion 311, thereby limiting the movable pin 31, making it difficult for the movable pin 31 to move along its own length direction.

[0041] Reference Figure 3 and Figure 4When the movable pin 31 moves the baffle 32 toward the direction of the medicine roll, the arc groove 23 limits the movable pin 31, keeping the spring 34 in a stretched state. At the same time, the clamping plate 35 abuts against the medicine roll and clamps the medicine roll. When the movable pin 31 rotates in the opposite direction, causing the protrusion 311 to move again to the point where the slide groove 22 and the arc groove 23 are connected, the movable pin 31 will move away from the medicine roll under the elastic force of the spring 34, releasing the clamping of the medicine roll.

[0042] Reference Figure 3 and Figure 4 Several arc grooves 23 are provided, all of which are connected to the sliding grooves 22. The arc grooves 23 are parallel to each other and are arranged along the length direction of the through hole 21. The moving pin 31 drives the protrusion 311 to move different distances, so that the protrusion 311 can enter different arc grooves 23. The clamping plate 35 forms a virtual circle with multiple diameters to accommodate different sizes of medicine rolls. The outer cylinder 1 is provided with a driving component 4 to drive the moving pin 31 to move. The driving component 4 can drive the moving pin 31 to rotate, so that the protrusion 311 enters or leaves the arc groove 23.

[0043] Reference Figure 3 and Figure 4 The driving component 4 includes several gears 41 and several racks 42. The racks 42 are slidably connected to the inner cylinder 2. The racks 42 are arranged along the length direction of the inner cylinder 2 and can move along their own length direction. Each rack 42 corresponds to a clamping mechanism. Each gear 41 corresponds to a moving pin 31 and is fixedly connected. Each gear 41 connected to the same clamping mechanism meshes with the same rack 42. When the rack 42 moves along its own length direction, the rack 42 can drive all gears 41 in the same clamping mechanism to rotate synchronously, thereby causing all moving pins 31 to rotate synchronously. The protrusion 311 enters the arc groove 23 to complete the locking and releasing of the moving pin 31.

[0044] Reference Figure 3 and Figure 4The rack 42 is fixedly connected to the limiting strip 422. The outer cylinder 1 is provided with a limiting groove 433 that is adapted to the limiting strip 422. When the rack 42 moves in the vertical direction, the limiting strip 422 moves in the limiting groove 433. The outer cylinder 1 is threadedly connected to a sleeve 43. When the sleeve 43 rotates, it rotates relative to the outer cylinder 1 and moves in the vertical direction. A fixing block 421 is fixedly connected to the upper end of the rack 42. The lower end of the sleeve 43 is provided with an annular groove 431 that matches the fixing block 421 and a through groove 432 that matches the rack 42. The upper end of the rack 42 is inserted into the through groove 432. The limiting groove 433 limits the limiting strip 422, thereby limiting the rack 42. When the sleeve 43 rotates, the rack 42 moves in the through groove 432, and the fixing block 421 moves in the annular groove 431. The rack 42 and the sleeve 43 rotate relative to each other. At the same time, the sleeve 43 drives the rack 42 to move in the vertical direction, thereby driving the drive component 4.

[0045] Reference Figure 2 and Figure 5 The outer cylinder 1 is provided with a cylindrical cylinder 5 on its outer side. The cylindrical cylinder 5 is provided with a number of pushing members 51 at equal angles along the circumference. The pushing members 51 can push multiple moving pins 31 to move synchronously, so that the moving pins 31 move along the length direction of the through hole 21. The pushing member 51 includes a screw 511, a moving cylinder 512 and a push plate 513. The moving cylinder 512 is fixedly connected to the push plate 513. The moving pins 31 are provided through the outer cylinder 1. The push plate 513 corresponds to the clamping mechanism one by one. When the moving cylinder 512 drives the push plate 513 to move, the push plate 513 abuts against all the moving pins 31 in the same clamping mechanism, so that the push plate 513 drives the moving pins 31 in the same clamping mechanism to move synchronously.

[0046] Reference Figure 2 and Figure 5 The screw 511 is rotatably connected to the cylinder 5. The movable cylinder 512 is sleeved on the outside of the screw 511 and threadedly connected to the screw 511. The movable cylinder 512 has a non-circular cross-section and is slidably connected to the cylinder 5. When the screw 511 rotates, the cylinder 5 limits the movable cylinder 512, allowing the movable cylinder 512 to move along the length of the screw 511, thereby causing the push plate 513 to move synchronously with the movable cylinder 512. The cylinder 5 is rotatably connected to a sleeve 515. The lower end of the sleeve 515 is fixedly connected to an end face gear 516. When the sleeve 515 rotates, it can drive the end face gear 516 to rotate as well. Each screw 511 is fixedly connected to a gear 514, which meshes with the end face gear 516. The end face gear 516 drives all gears 514 to rotate, thereby driving all screws 511 to rotate, causing all push plates 513 to move synchronously.

[0047] Reference Figure 3 and Figure 5 When installing the medicine roll, the worker first places the medicine roll between the clamping plates 35, then rotates the sleeve 2 515, causing all the screws 511 to rotate synchronously. All the push plates 513 move towards the inner cylinder 2, and drive all the moving pins 31 to move towards the medicine roll, so that the clamping plates 35 abut against the outer wall of the medicine roll. At this time, the sleeve 1 43 is rotated, causing the sleeve 1 43 to drive all the racks 42 to move vertically, thereby causing all the gears 1 41 to rotate. The gears 1 41 drive the moving pins 31 to rotate, and the protrusion 311 (refer to...) Figure 4 Enter the corresponding arc groove 23 (refer to) Figure 4 In the process, the arc groove 23 limits the movement pin 31, completing the locking process of the movement pin 31, so that the clamping plate 35 clamps the medicine roll.

[0048] Reference Figure 3 and Figure 5 After the worker places the outer cylinder 1, inner cylinder 2, and the entire charge into the borehole, they rotate the second sleeve 515 in the reverse direction, causing the push plate 513 to move away from the charge along with the moving cylinder 512. At this point, the push plate 513 separates from the moving pin 31. Then, they rotate the first sleeve 43, causing the rack 42 to move in the reverse direction, which in turn drives all the gears 41 to rotate in the reverse direction. The rotation of the moving pin 31 drives the protrusion 311 (see reference). Figure 4 From arc groove 23 (refer to) Figure 4 ) Enter the slide 22 (refer to Figure 4 In the process, the movable pin 31 is reset under the elastic force of the spring 34 and moves away from the cartridge, so that the clamping plate 35 is separated from the cartridge. At this time, the outer cylinder 1 and the inner cylinder 2 are pulled upward, leaving the cartridge in the borehole, which facilitates the positioning and installation of the cartridge.

[0049] Reference Figure 1 and Figure 6 An extension tube 6 is detachably connected to the upper end of the cylinder 5. When the borehole depth is deep, the extension tube 6 can be connected to the cylinder 5 to form a whole, making it easier for the operator to hold the extension tube 6 and send the cylinder 5 into the bottom of the borehole. A connecting rod 61 is fixedly connected to the lower end of the extension tube 6, and a connecting block 62 is fixedly connected to the lower end of the connecting rod 61. The cylinder 5 has a connecting hole 52 and a connecting groove 53 that are adapted to the connecting block 62. The extension tube 6 is placed on top of the cylinder 5, so that the connecting block 62 is aligned with the connecting hole 52 and inserted into the connecting hole 52.

[0050] Reference Figure 1 and Figure 6The cylinder 5 has a second connecting groove 63 that is adapted to the connecting rod 61. The second connecting groove 63 is connected to the first connecting groove 53. The connecting hole 52 is set at one end of the first connecting groove 53 and is connected to both the first connecting groove 53 and the second connecting groove 63. After the connecting block 62 enters the connecting hole 52, the extension cylinder 6 is rotated, so that the extension cylinder 6 and the cylinder 5 rotate relative to each other. At this time, the connecting rod 61 and the connecting block 62 rotate together with the extension cylinder 6. The connecting rod 61 enters the second connecting groove 63 and the connecting block 62 enters the first connecting groove 53. The connecting block 62 cannot pass through the first connecting groove 53, so that the cylinder 5 limits the connection of the connecting block 62, thus completing the connection and fixation between the cylinder 5 and the extension cylinder 6.

[0051] Reference Figure 2 and Figure 7 The extension cylinder 6 is equipped with a connecting member 7 for driving the first sleeve 43 to rotate and a connecting member 8 for driving the second sleeve 515 to rotate. The connecting member 7 can drive the first sleeve 43 to rotate, and the connecting member 8 can drive the second sleeve 515 to rotate, which makes it convenient for the operator to rotate the first sleeve 43 and the second sleeve 515 inside the blast hole, thereby controlling the separation of the clamping plate 35 from the cartridge.

[0052] Reference Figure 2 and Figure 7 The connecting component 2 8 includes a rotating cylinder 2 81, a moving rod 82, and a moving block 83. The rotating cylinder 2 81 is rotatably connected to the outside of the cylinder 5. The moving rod 82 is fixedly connected to the lower end of the rotating cylinder 2 81. The moving block 83 is fixedly connected to the lower end of the moving rod 82. When the rotating cylinder 2 81 rotates, the moving block 83 and the moving rod 82 move together with the rotating cylinder 2 81. The sleeve 2 515 has a moving groove 1 84 and a moving hole 85 that are adapted to the moving block 83. After aligning the moving block 83 with the moving hole 85, the moving block 83 is inserted into the moving hole 85.

[0053] Reference Figure 2 and Figure 7 The second sleeve 515 has a second movable groove 86 adapted to the movable rod 82. The first movable groove 84 and the second movable groove 86 are interconnected. The movable hole 85 is set at one end of the first movable groove 84 and is connected to both the first movable groove 84 and the second movable groove 86. After the movable block 83 is inserted into the movable hole 85, the second sleeve 515 is rotated, so that the movable block 83 and the movable rod 82 rotate together with the second sleeve 515. The movable block 83 enters the first movable groove 84, and the movable rod 82 enters the second movable groove 86. The movable block 83 cannot pass through the second movable groove 86, so that the second rotating cylinder 81 limits the movable block 83, thus completing the fixed connection between the second sleeve 515 and the second rotating cylinder 81.

[0054] Reference Figure 2 and Figure 7The connecting component 7 includes a rotating cylinder 71 and several telescopic rods 72. The rotating cylinder 71 is rotatably connected to the inside of the extension cylinder 6. The telescopic rods 72 are fixedly connected circumferentially along the lower end of the rotating cylinder 71. When the rotating cylinder 71 rotates, it can drive the telescopic rods 72 to rotate together. The upper end of the sleeve 43 is provided with several round holes 73 that are adapted to the telescopic rods 72. The lower end of the telescopic rods 72 is inserted into the round holes 73, so that when the rotating cylinder 71 rotates, the round holes 73 limit the telescopic rods 72, so that the telescopic rods 72 drive the sleeve 43 to rotate. The telescopic rods 72 are always kept in a compressed state, so that the telescopic rods 72 are always in contact with the sleeve 43.

[0055] Reference Figure 6 and Figure 7 The movable hole 85 is provided with one end of the movable groove 84 and the movable groove 86. When the operator rotates the drum 81, he only controls the drum 81 to drive the sleeve 515 to rotate in one direction. This rotation direction causes the sleeve 515 to drive the gear 514 (see reference). Figure 5 ) rotates, causing push plate 513 (refer to Figure 5 The movement direction is set as rotation direction one. When the operator rotates the rotating drum 81 so that the moving block 83 enters the moving groove 86, the rotation direction of the rotating drum 81 is set as rotation direction two. Rotation direction one and rotation direction two are set in the same direction, so that when the operator rotates the rotating drum 81, driving the sleeve 2 515 to rotate, and causing the push plate 513 to move away from the medicine roll, the moving block 83 is always located at the end of the moving groove 86 away from the moving hole 85, and the moving block 83 is not easy to disengage from the moving groove 86. Similarly, when the operator rotates the extension cylinder 6 so that the connecting block 62 enters the connecting groove 63, the rotation direction of the extension cylinder 6 is set as rotation direction three. Rotation direction three is set in the same direction as rotation direction two, so that when the rotating drum 81 rotates, the connecting block 62 is not easy to disengage from the connecting groove 63.

[0056] The implementation principle of the open-pit mine bench blasting device according to the embodiments of this application is as follows: by setting an outer cylinder 1, an inner cylinder 2 and a clamping mechanism, the explosive cartridge is placed inside the inner cylinder 2 and the clamping mechanism clamps the explosive cartridge. Then, the workers place the outer cylinder 1, the inner cylinder 2 and the explosive cartridge inside the blast hole, which facilitates the placement of the explosive cartridge. At the same time, during the installation process, the outer cylinder 1 and the inner cylinder 2 can protect the explosive cartridge, which helps to improve the safety of the installation process. The clamping mechanism releases the clamp on the explosive cartridge, and the outer cylinder 1 and the inner cylinder 2 move upward to separate from the explosive cartridge, and place the explosive cartridge at the bottom of the blast hole. The installation position of the explosive cartridge is more precise and controllable.

[0057] 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 bench blasting device for open-pit mines, characterized in that: The device includes an outer cylinder (1) and an inner cylinder (2). The outer cylinder (1) is sleeved on the outside of the inner cylinder (2). The inner cylinder (2) is provided with several clamping mechanisms arranged at equal angles along the inner cylinder (2). Each clamping mechanism includes several clamping members (3) evenly arranged along the length of the inner cylinder (2). Each clamping member (3) includes a moving pin (31), a first baffle (32), a second baffle (33), a spring (34), and a clamping plate (35). The moving pin (31) is fixedly connected to the clamping plate (35). The inner cylinder (2) has several through holes (21). The first baffle (32) is fixedly connected to the moving pin (31), and the second baffle (33) is rotatably connected to the inner cylinder (2). The movable pin (31) is installed through the first baffle (32), the second baffle (33) and the outer cylinder (1). The spring (34) is located between the first baffle (32) and the second baffle (33) and is fixedly connected to the first baffle (32) and the second baffle (33). The movable pin (31) is fixedly connected to the protrusion (311). The inner cylinder (2) is provided with a sliding groove (22) and an arc groove (23) that are adapted to the protrusion (311) and connected to the through hole (21). The arc groove (23) is connected to the sliding groove (22) and is located at the end of the sliding groove (22) away from the outer cylinder (1). The outer cylinder (1) is provided with a driving component (4) that drives the movable pin (31) to move. The arc groove (23) is provided in several ways and is connected to the slide groove (22). The arc grooves (23) are parallel to each other and are arranged along the length direction of the through hole (21). The driving component (4) includes several gears (41) and several racks (42). The racks (42) are all slidably connected to the inner cylinder (2). The gears (41) correspond one-to-one with the moving pins (31) and are fixedly connected. The racks (42) correspond one-to-one with the clamping mechanisms. The gears (41) connected to the same clamping mechanism are all meshed with the same rack (42). The outer cylinder (1) is provided with a cylindrical cylinder (5) on its outer side. The cylindrical cylinder (5) is provided with a number of pushing members (51) at equal angles along the circumference. The pushing member (51) includes a screw (511), a movable cylinder (512) and a push plate (513). The movable cylinder (512) is fixedly connected to the push plate (513). The movable cylinder (512) is sleeved on the outside of the screw (511) and threadedly connected to the screw (511). The cross-section of the movable cylinder (512) is not circular and is slidably connected to the cylindrical cylinder (5). The push plate (513) corresponds to the clamping mechanism one by one. The screw (511) is fixedly connected with a gear two (514). The cylindrical cylinder (5) is rotatably connected with a sleeve two (515). The lower end of the sleeve two (515) is fixedly connected with an end face gear (516). The gear two (514) meshes with the end face gear (516).

2. The open-pit mine bench blasting device according to claim 1, characterized in that: The outer cylinder (1) is internally threaded with a sleeve (43), and the upper end of the rack (42) is fixedly connected with a fixing block (421). The lower end of the sleeve (43) is provided with an annular groove (431) that matches the fixing block (421) and a through groove (432) that matches the rack (42). The rack (42) is fixedly connected with a limit strip (422), and the outer cylinder (1) is provided with a limit groove (433) that matches the limit strip (422).

3. The open-pit mine bench blasting device according to claim 1, characterized in that: The upper end of the cylinder (5) is detachably connected to an extension cylinder (6), the lower end of the extension cylinder (6) is fixedly connected to a connecting rod (61), the lower end of the connecting rod (61) is fixedly connected to a connecting block (62), the cylinder (5) is provided with a connecting hole (52) and a connecting groove one (53) that are adapted to the connecting block (62), the cylinder (5) is provided with a connecting groove two (63) that is adapted to the connecting rod (61), the connecting groove two (63) and the connecting groove one (53) are interconnected, the connecting hole (52) is provided at one end of the connecting groove one (53) and is connected to both the connecting groove one (53) and the connecting groove two (63), the extension cylinder (6) is provided with a connecting piece one (7) for driving the sleeve one (43) to rotate and a connecting piece two (8) for driving the sleeve two (515) to rotate.

4. The open-pit mine bench blasting device according to claim 3, characterized in that: The connector 1 (7) includes a rotating cylinder 1 (71) and several telescopic rods (72). The rotating cylinder 1 (71) is rotatably connected to the inside of the extension cylinder (6). The telescopic rods (72) are fixedly connected circumferentially along the lower end of the rotating cylinder 1 (71). The upper end of the sleeve 1 (43) is provided with several round holes (73) that are adapted to the telescopic rods (72).

5. The open-pit mine bench blasting device according to claim 4, characterized in that: The second connector (8) includes a second rotating cylinder (81), a moving rod (82), and a moving block (83). The second rotating cylinder (81) is rotatably connected to the outside of the cylinder (5). The moving rod (82) is fixedly connected to the lower end of the second rotating cylinder (81). The moving block (83) is fixedly connected to the lower end of the moving rod (82). The second sleeve (515) has a first moving groove (84) and a moving hole (85) adapted to the moving block (83). The second sleeve (515) has a second moving groove (86) adapted to the moving rod (82). The first moving groove (84) and the second moving groove (86) are interconnected. The moving hole (85) is located at one end of the first moving groove (84) and is connected to both the first moving groove (84) and the second moving groove (86).

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