A hoisting device for reducing the charge volume in a borehole

Abstract

The utility model relates to engineering blasting technique field discloses a kind of hoisting device for reducing hole charge quantity, including cannon barrel, cannon barrel is fixedly connected with upper sleeve pipe in, the length of upper sleeve pipe is cannon barrel inner wall diameter half, the inside fixed setting of upper sleeve pipe has screw rod, the wall of cannon barrel is passed through the screw rod, the other side of screw rod is penetrated upper sleeve pipe and is rotatably connected with upper flywheel, the side fixed connection of upper flywheel has handle, the handle is penetrated upper sleeve pipe, the side of cannon barrel is provided with overflow outlet, the shape of overflow outlet is sector and sector size is the diameter of cannon barrel.In the utility model, by rotating handle to drive upper flywheel rotation, and then drive the rotation of chain, make the groove on chain from blasting hole lower flywheel, force groove to rotate while loading part of explosive, when overflow outlet is neutral, turn the groove to make the explosive in the inside flow along overflow outlet, to reduce the height of hole charge.

Description

Technical Field

[0001] This utility model relates to the field of engineering blasting technology, and in particular to a lifting device for reducing the amount of explosives charged in a borehole. Background Technology

[0002] Engineering blasting is widely used in railway construction, mining, and directional blasting for urban demolition. In recent years, with the increasing role of engineering blasting in mining, many blasting companies in China have built explosives production ground stations near mines. The explosives production ground stations in my country mainly consist of porous granular ammonium nitrate explosives (AMF) and on-site mixed emulsion explosives. Porous granular AMF is particularly popular with blasting companies and mines due to its simple preparation process, low production cost, and ease of ground station construction.

[0003] However, during the large-scale mining phase, domestically produced porous granular ammonium nitrate explosive (AMFO) vehicles cannot accurately and effectively control the amount of explosive loaded during the loading process. This results in insufficient explosives being loaded into the blasting holes, forcing on-site personnel to frequently measure the packing height and replenish the explosives accordingly. If the explosives are overloaded, leading to insufficient packing, and the explosives cannot be removed from the holes, the only option is to fill the holes with water to dissolve the ammonium nitrate and reduce the loading height. However, this method reduces blasting efficiency and increases the risk of hole punching and flying rocks during detonation, thus increasing safety hazards. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a lifting device to reduce the amount of explosives in the hole. It aims to improve the problem in the prior art where, when the amount of explosives is too large, it is impossible to remove the explosives from the hole, so water can be used instead, which leads to a decrease in the efficiency of blasting operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for reducing the amount of propellant in a borehole, comprising a barrel, an upper sleeve fixedly connected inside the barrel, the length of the upper sleeve being half the diameter of the inner wall of the barrel, a screw fixedly installed inside the upper sleeve, the screw passing through one wall of the barrel, the other side of the screw passing through the upper sleeve and rotatably connected to an upper flywheel, a handle fixedly connected to one side of the upper flywheel, the handle passing through the upper sleeve, an overflow port provided on one side of the barrel, the overflow port being fan-shaped and the fan shape being the diameter of the barrel, a lower sleeve fixedly connected to the lower part of the barrel, a lower flywheel rotatably connected to the center of the lower sleeve, a chain fixedly installed between the lower flywheel and the upper flywheel, an open cubic groove evenly connected on the chain, one side of the groove being softly connected to the tooth ends of the upper flywheel and the lower flywheel, and an adjustment component installed on one side of the barrel.

[0006] By adopting the above technical solution, rotating the handle drives the upper flywheel to rotate, which in turn drives the chain to rotate. This causes the groove on the chain to pass over the flywheel below the blasting hole, forcing the groove to rotate while loading some explosives, thus lifting it out. Once the overflow outlet is in a neutral position, the groove flips over, allowing the explosives inside to flow out along the overflow outlet. This reduces the height of the explosives inside the hole, improving upon the problem in existing technologies where, when the explosive load is too large, it is impossible to remove the explosives from the hole, and water is used instead, leading to reduced blasting efficiency.

[0007] Preferably, the adjustment assembly includes a mounting plate, one side of which is symmetrically and fixedly connected to a baffle, one end of which is fixedly connected to one side of the barrel.

[0008] Preferably, the mounting plate is rotatably connected to a rotating rod, and one end of the rotating rod is fixedly connected to a drive bevel gear.

[0009] Preferably, the drive bevel gear has a symmetrical meshing connection between its tooth ends and a transmission bevel gear, and one end of the transmission bevel gear is rotatably connected to one side of the baffle.

[0010] Preferably, a lead screw is rotatably connected to one side of the baffle, one end of the lead screw is fixedly connected to one end of the transmission bevel gear, and the other end of the lead screw is rotatably connected to a limiting plate, one side of the limiting plate being fixedly connected to one side of the mounting plate.

[0011] Preferably, the outer wall of the lead screw is threadedly connected to a slider, one end of the slider is fixedly connected to an extension plate, and the outer wall of the extension plate is slidably connected to the inside of the mounting plate.

[0012] Preferably, a spring is fixedly connected inside the rotating rod, and a sliding plate is fixedly connected to one end of the spring. The outer wall of the sliding plate is slidably connected to the inside of the rotating rod.

[0013] Preferably, a limiting post is fixedly connected to one side of the sliding plate, and one end of the limiting post is engaged with the side wall of the mounting plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the upper flywheel is driven to rotate by turning the handle, which in turn drives the chain to rotate, so that the groove on the chain passes through the flywheel below the blast hole. This forces the groove to rotate while loading some explosives, thereby lifting it out. When the overflow port is in a neutral position, the groove is flipped over, so that the explosives inside flow out along the overflow port, thereby reducing the loading height of the explosives in the hole.

[0016] 2. In this utility model, the rotation of the rotating rod drives the rotation of the drive bevel gear, which in turn drives the rotation of the transmission bevel gear, thereby driving the rotation of the lead screw. The rotation of the lead screw drives the sliding of the slider, which in turn drives the sliding of the extension plate, thereby causing the extension plate to expand and contact the rock mass, thus achieving rapid fixed installation of the barrel. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a lifting device for reducing the amount of explosive charge inside a hole, as proposed in this utility model.

[0018] Figure 2 This is a partial structural diagram of the chain of a lifting device for reducing the amount of explosive charge inside a hole, as proposed in this utility model.

[0019] Figure 3 This is a partial structural diagram of the screw of a lifting device for reducing the amount of explosive charge in a hole, as proposed in this utility model.

[0020] Figure 4 This is a partial structural diagram of the mounting plate of a lifting device for reducing the amount of explosive charge in a hole, as proposed in this utility model.

[0021] Figure 5 This is a partial structural diagram of the extension plate of a lifting device for reducing the amount of explosive charge in a hole, as proposed in this utility model.

[0022] Figure 6 This is a partial structural diagram of the spring in a lifting device for reducing the amount of explosive charge inside a hole, as proposed in this utility model.

[0023] Legend:

[0024] 1. Barrel; 2. Upper sleeve; 3. Handle; 4. Lower sleeve; 5. Upper flywheel; 6. Lower flywheel; 7. Chain; 8. Groove; 9. Screw; 10. Overflow outlet; 11. Mounting plate; 12. Rotating rod; 13. Drive bevel gear; 14. Transmission bevel gear; 15. Baffle; 16. Lead screw; 17. Limiting plate; 18. Slider; 19. Extension plate; 20. Spring; 21. Slide plate; 22. Limiting post. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figures 1-6This utility model provides an embodiment of a lifting device for reducing the amount of propellant in a borehole, comprising a barrel 1, an upper sleeve 2 fixedly connected inside the barrel 1, the length of the upper sleeve 2 being half the diameter of the inner wall of the barrel 1, a screw 9 fixedly installed inside the upper sleeve 2, the screw 9 passing through one wall of the barrel 1, the other side of the screw 9 passing through the upper sleeve 2 and rotatably connected to an upper flywheel 5, a handle 3 fixedly connected to one side of the upper flywheel 5, the handle 3 passing through the upper sleeve 2, an overflow outlet 10 provided on one side of the barrel 1, the overflow outlet 10 being fan-shaped and the size of the fan being the diameter of the barrel 1, a lower sleeve 4 fixedly connected to the lower part of the barrel 1, a lower flywheel 6 rotatably connected to the center of the lower sleeve 4, a chain 7 fixedly installed between the lower flywheel 6 and the upper flywheel 5, an uncovered cubic groove 8 evenly connected on the chain 7, one side of the groove 8 being softly connected to the tooth ends of the upper flywheel 5 and the lower flywheel 6, and an adjustment component installed on one side of the barrel 1.

[0027] Specifically, the barrel 1 is used to store explosives, the upper sleeve 2 is used to install the upper flywheel 5, the screw 9 is used to install the handle 3, and the lower sleeve 4 is used to install the lower flywheel 6. The lower sleeve 4 and the upper sleeve 2 are located on the same vertical plane. The upper flywheel 5 and the lower flywheel 6 are connected to the upper sleeve 2 and the lower sleeve 4 respectively, and the two are interference-fitted. The overflow port 10 should maintain an edge seal in the area from the inside to the upper sleeve 2, while a rectangle slightly larger than the groove 8 should be reserved at the center position, i.e., the position where the upper flywheel 5 is installed on the upper sleeve 2, to facilitate the smooth passage of the groove 8 during rotation. The screw 9 is fitted with the upper sleeve 2 and the lower sleeve 4 with a large clearance sliding fit. 4. A gasket is installed on one side, and the screw 9 and the gasket are fitted with a clearance fit to ensure that the screw 9 is stable and reliable and is not easy to jam during later use. When this device is needed, the handle 3 needs to be turned so that it drives the upper flywheel 5 at the end of the screw 9 to rotate clockwise. This causes the groove 8 on the chain 7 to pass through the flywheel 6 below the blast hole, forcing the groove 8 to rotate while loading some explosives, thereby lifting it out. When the overflow port 10 is in a neutral position, the groove 8 is flipped over, allowing the explosives inside to flow out along the overflow port 10, thereby reducing the loading height in the hole. This improves the problem in the existing technology where, when the loading amount is too large, it is impossible to remove the explosives from the hole, and water can only be used to fill the hole, which leads to a decrease in blasting efficiency.

[0028] Reference Figure 4 and Figure 5The adjustment assembly includes a mounting plate 11. A baffle 15 is symmetrically fixedly connected to one side of the mounting plate 11. One end of the baffle 15 is fixedly connected to one side of the barrel 1. A rotating rod 12 is rotatably connected inside the mounting plate 11. A drive bevel gear 13 is fixedly connected to one end of the rotating rod 12. A transmission bevel gear 14 is symmetrically meshed with the tooth ends of the drive bevel gear 13. One end of the transmission bevel gear 14 is rotatably connected to one side of the baffle 15. A lead screw 16 is rotatably connected to one side of the baffle 15. One end of the lead screw 16 is fixedly connected to one end of the transmission bevel gear 14. The other end of the lead screw 16 is rotatably connected to a limiting plate 17. One side of the limiting plate 17 is fixedly connected to one side of the mounting plate 11. A slider 18 is threadedly connected to the outer wall of the lead screw 16. An extension plate 19 is fixedly connected to one end of the slider 18. The outer wall of the extension plate 19 is slidably connected inside the mounting plate 11.

[0029] Specifically, the mounting plate 11 is used to fix the baffle 15, which is used to connect the barrel 1 and also to install the lead screw 16. The rotating rod 12 is used to drive the drive bevel gear 13, the transmission bevel gear 14 is used to drive the rotation of the lead screw 16, the limiting plate 17 is used to fix the lead screw 16, and the slider 18 is used to connect the extension plate 19. The extension plate 19 is used to expand outward. When this device is needed, rotating the rotating rod 12 drives the drive bevel gear 13 to rotate, which in turn drives the two transmission bevel gears 14 to rotate. The rotation of the transmission bevel gears 14 drives the rotation of the lead screw 16, which in turn drives the slider 18 to slide, thereby causing the extension plate 19 to slide out from the inside of the mounting plate 11, so that the extension plate 19 expands outward and contacts the rock mass, thereby completing the rapid fixing and installation of the barrel 1 and improving work efficiency.

[0030] Reference Figure 6 A spring 20 is fixedly connected inside the rotating rod 12. One end of the spring 20 is fixedly connected to a slide plate 21. The outer wall of the slide plate 21 is slidably connected to the inside of the rotating rod 12. A limit post 22 is fixedly connected to one side of the slide plate 21. One end of the limit post 22 is snapped into the side wall of the mounting plate 11.

[0031] Specifically, spring 20 is used to connect slide plate 21 and rotating rod 12. Slide plate 21 is used to install limiting post 22. Several limiting holes are evenly opened on the side wall of mounting plate 11 along rotating rod 12. Limiting post 22 is engaged in the limiting hole on the side wall of mounting plate 11. When this device is needed, slide plate 21 is pulled to extend spring 20 and limit post 22 is pulled out from one side of mounting plate 11. At this time, rotating rod 12 drives extension plate 19 to expand. When extension plate 19 contacts rock mass, slide plate 21 is released. Spring 20 contracts and slides slide plate 21, thereby driving limit post 22 to engage in the new limiting hole on the side wall of mounting plate 11 to complete fixation, preventing explosive from shifting or falling off due to vibration or external force.

[0032] Working principle: When this device is needed, turn the handle 3 to drive the upper flywheel 5 at the end of the screw 9 to rotate clockwise. This causes the groove 8 on the chain 7 to pass through the lower flywheel 6 of the blast hole, forcing the groove 8 to rotate while loading some explosives, thus lifting it out. When the overflow port 10 is in a neutral position, flip the groove 8 to allow the explosives inside to flow out along the overflow port 10, thereby reducing the loading height in the hole.

[0033] When it is necessary to fix this device, pull the slide plate 21, rotate the rotating rod 12 to drive the rotation of the drive bevel gear 13, which in turn drives the rotation of the lead screw 16, thereby causing the slider 18 to slide. The slider 18 slides and causes the extension plate 19 to slide out from the inside of the mounting plate 11. When the extension plate 19 expands outward and contacts the rock mass, release the slide plate 21. The spring 20 contracts and causes the slide plate 21 to slide, which in turn causes the limiting post 22 to engage with the new limiting hole on the side wall of the mounting plate 11 to complete the fixation.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

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