A drill rod lifter and lifting method for geological drilling core drilling rig

Abstract

The present invention belongs to the technical field of geological drilling, specifically a drill rod lifter and lifting method for a geological drilling core drilling rig, comprising a lifting head; a sling is fixedly connected to the upper end of the lifting head; a guide hole is opened in the lifting head, and the upper end of the guide hole is connected to a water injection pipe; a group of slide grooves are evenly distributed on the circumference of the side surface of the bottom of the lifting head; a pressure block is slidably connected inside the slide groove; a grid plate is fixedly connected to the position near the guide hole in the slide groove; a spring is fixedly connected between the grid plate and the pressure block; the lifting head is lowered and inserted into the drill rod through the sling and high-pressure water is injected into the guide hole through the water injection pipe. After the high-pressure water enters the slide groove, the pressure block is pushed to slide inside the slide groove, and then multiple pressure blocks are extended outward at the same time and fit into the inner wall of the drill rod, thereby clamping and fixing the drill rod, improving the lifting efficiency of the drill rod, and improving the wear between the mechanisms, which is beneficial to extending the service life of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of geological drilling, in particular to a drill rod lifter and a lifting method for a geological drilling core drill. Background Art

[0002] A core drill rig is a type of core drilling equipment primarily used for the survey and exploration of metallic and non-metallic solid minerals. A core drill rig utilizes a large number of drill rods. Whether adding or removing drill rods, a lifter is required to raise the drill rods to a certain height.

[0003] Patent application CN216008427U discloses a drill rod lifter for geological drilling core drilling rigs, comprising a base plate, a boom fixedly connected to the right end of the top of the base plate, a pulley movably connected to the right end of the top of the boom via a movable pin, a fixed base fixedly connected to the left end of the top of the base plate, a second motor fixedly mounted on the front surface of the base plate, a reeling rod fixedly mounted on the output end of the second motor, and a back surface of the reeling rod movably connected to the inner surface of the base plate via a bearing. The utility model achieves the purpose of quickly securing and lifting the drill rod through the interaction between an arc-shaped locking plate, a first motor, a threaded sleeve, a threaded rod, a trapezoidal guide block, a slider, a slide rod, a second motor, a reeling rod, a base, a steel rope, a boom and pulley, and a lifting box. The lifter is convenient and quick to operate, greatly saving work time and improving work efficiency.

[0004] In the above-mentioned prior art, the arc-shaped locking plate is squeezed by the trapezoidal guide block, so that the arc-shaped locking plate moves outward and clamps the drill rod. However, this method will cause a large amount of wear between the trapezoidal guide block and the arc-shaped locking plate due to long-term squeezing and friction between the two, thereby reducing the service life of the lifter and being detrimental to the long-term use of the equipment.

[0005] To this end, the present invention provides a drill rod lifter and a lifting method for a geological drilling core drill. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: a drill rod lifter for a geological drilling core drilling rig described in the present invention comprises a lifting head; a sling is fixedly connected to the upper end of the lifting head; a guide hole is opened inside the lifting head, and the upper end of the guide hole is connected to a water injection pipe; a group of slide grooves are evenly distributed on the circumference of the side surface of the bottom of the lifting head, and the slide grooves are connected to the guide hole; a pressure block is connected to the sliding seal inside the slide groove; a grid plate is fixedly connected to the position near the guide hole inside the slide groove; a spring is fixedly connected between the grid plate and the pressure block; in the prior art, the arc locking plate is squeezed by the trapezoidal guide block, so that the arc locking plate moves outward and clamps the drill rod, but This method causes a problem of large wear of the trapezoidal guide block and the arc locking plate due to long-term extrusion and friction between the trapezoidal guide block and the arc locking plate, which reduces the service life of the lifter and is not conducive to the long-term use of the equipment. At this time, when the present invention is working, the lifting head is lowered and inserted into the drill pipe through the sling, and then high-pressure water is injected into the guide hole through the water injection pipe. After the high-pressure water enters the chute, it pushes the pressure block to slide inside the chute, and then multiple pressure blocks are extended outward at the same time and fit into the inner wall of the drill pipe, thereby clamping the drill pipe. After that, the drill pipe is lifted by the sling, which improves the lifting efficiency of the drill pipe and improves the wear between the mechanisms, which is beneficial to extending the service life of the equipment.

[0008] Preferably, a flexible pad is fixedly connected to the side of the pressing block away from the grid plate; a spray hole is opened inside the pressing block, and the spray hole passes through the flexible pad; the diameter of the spray hole is smaller than the diameter of the guide hole; by setting the flexible pad, the degree of fit between the pressing block and the inner wall of the drill rod can be improved, and by reasonably setting the diameter of the spray hole, after high-pressure water is injected into the guide hole, a small amount of water will be sprayed outward through the spray hole in the process of the high-pressure water pushing the pressing block to slide, thereby cleaning the inner wall of the drill rod, avoiding the problem of slipping between the flexible pad and the drill rod caused by the mud remaining on the surface of the drill rod, and improving the clamping and fixing effect of the drill rod. When the flexible pad is in contact with the drill rod, the spray hole is automatically blocked, so that the water inside the guide hole and the slide groove will not leak, and a certain clamping force is maintained.

[0009] Preferably, a rotating shaft is provided inside the guide hole, and the rotating shaft is driven by a power component; the lower end of the rotating shaft extends to the bottom of the lifting head and is rotatably connected to the lifting head; the lower end of the rotating shaft is fixedly connected to a mounting seat; a group of scrapers are evenly distributed on the circumference of the side surface of the mounting seat, and the upper ends of the scrapers extend to the side surface of the lifting head; before the pressure block extends outward, the rotating shaft is driven to rotate by the power component, and then the multiple scrapers are driven to rotate synchronously through the mounting seat, so that the scrapers scrape the inner wall surface of the drill rod, thereby scraping off the remaining soil on the surface of the drill rod, improving the cleaning efficiency of the drill rod, and then after the flexible pad is subsequently fitted with the drill rod, the problem of slipping between the flexible pad and the drill rod can be further avoided.

[0010] Preferably, the power assembly includes a slider, and the slider is slidably and sealedly connected to the inside of the guide hole; an elastic rope is fixed between the upper end of the slider and the side wall of the guide hole; the lower end of the slider is rotatably connected to the rotating shaft; the surface of the rotating shaft is provided with a thread; the lower end of the lifting head is fixedly connected to a nut, and the rotating shaft passes through the nut and is threadedly connected thereto; a pair of guide grooves are provided inside the lifting head above the slide, and both ends of the guide grooves are connected to the guide hole; a retaining ring is fixedly connected to the position near the lower end of the guide groove inside the guide hole; after the high-pressure water enters the guide hole, it will first push the slider to slide downward, and then the slider drives the rotating shaft to move downward. Since the rotating shaft and the nut are threadedly connected, the rotating shaft rotates and descends at the same time, so that the scraper can also move downward while rotating, thereby peeling off the mud on the inner wall surface of the drill pipe downward, further improving the cleaning effect of the drill pipe; then, when the slider moves between the two ends of the guide groove, it will be blocked by the retaining ring, and then the slider and the scraper stop moving. At this time, the high-pressure water can flow into the slide through the guide groove and push the pressure block to extend out smoothly.

[0011] Preferably, a pair of elastic sheets are fixedly connected to the surface of the flexible pad near the spray hole, and the elastic sheets are arranged in an arc shape; by setting a pair of elastic sheets, when water flows outward through the spray hole, part of the water flow will be dispersed by the elastic sheets and splashed along the concave surface of the elastic sheets toward the side of the pressing block, thereby flushing the scraper, reducing the residual dirt on the surface of the scraper, and avoiding the problem of a large amount of dirt adhering to the surface of the scraper, which leads to a decrease in its subsequent cleaning effect.

[0012] Preferably, a hook head is provided at the upper end of the scraper bar, and the bending direction of the hook head is toward the lifting head; a group of baffles are evenly distributed on the circumference of the lifting head surface, and the surface of the baffle is set as an arc surface; the scraper bar is made of elastic material, and the hook head can contact the arc surface of the baffle during the rotation of the scraper bar; by setting the hook head, the scraper bar can be easily pulled out from the inside of the drill rod, and the hook head will collide with the baffle during the rotation of the scraper bar, thereby prompting the scraper bar to shake continuously, shaking off the dirt adhered to its surface, and further improving the self-cleaning efficiency of the scraper bar, and by setting the surface of the baffle to an arc surface, the hook head and the baffle can be squeezed into each other smoothly, thereby reducing the rotation resistance of the scraper bar.

[0013] Preferably, the scraper bar is provided with a group of grooves on the side away from the lifting head; a movable block is provided inside the groove; a connecting rod is fixedly connected to the side of the movable block close to the lifting head, and the connecting rod passes through the scraper bar and is slidably connected thereto; a spring 2 is fixedly connected between the movable block and the side wall of the groove; an iron block is fixedly connected to one end of the connecting rod away from the movable block; the baffle is made of magnetic material; when the scraper bar rotates to a position close to the baffle bar, the iron block will be attracted by the baffle bar, and then the movable block will be pulled away from the inner wall of the drill rod through the connecting rod, and the spring 2 will be compressed. When the scraper bar rotates to a position away from the baffle bar, the iron block is no longer attracted by the baffle bar, and then the spring 2 pushes the movable block to move in the opposite direction, so that the movable block can hit the inner wall of the drill rod, thereby breaking the harder soil on the surface of the drill rod, making it easier for the scraper bar to scrape off the soil, further improving the scraping efficiency of the soil.

[0014] Preferably, an elastic membrane is fixed to the opening side of the groove; by providing the elastic membrane to seal the groove, it is possible to prevent external soil from entering the groove and affecting the normal movement of the movable block.

[0015] A method for lifting a drill rod of a geological drilling core drilling rig, the method using the drill rod lifter of the geological drilling core drilling rig, the method comprising the following steps:

[0016] S1: Lower the lifting head through the sling, insert it into the drill pipe, and inject high-pressure water into the hole through the water injection pipe;

[0017] S2: High-pressure water pushes the slider downward, and the shaft drives the scraper bar to rotate and move downward. The scraper bar peels off the soil on the inner wall of the drill pipe. When the slider moves between the two ends of the guide groove, it is blocked by the retaining ring, and then the slider and the scraper bar stop moving.

[0018] S3: High-pressure water flows into the chute through the guide groove, pushing the pressure block outward and fitting it against the inner wall of the drill pipe, thereby clamping the drill pipe and then lifting it with a sling.

[0019] Preferably, the detailed steps of step S3 are:

[0020] S3a: High-pressure water flows into the chute through the guide groove. As the high-pressure water pushes the pressing block to slide, a small amount of water is sprayed out through the spray hole to clean the inner wall of the drill pipe.

[0021] S3b: When the flexible pad fits against the drill pipe, the spray hole is automatically blocked and the drill pipe is clamped and fixed. The drill pipe is then lifted up by the sling.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The drill rod lifter and lifting method of a geological drilling core drilling rig described in the present invention lowers the lifting head through a sling and inserts it into the drill rod, and then injects high-pressure water into the guide hole through a water injection pipe. After the high-pressure water enters the chute, it pushes the pressure block to slide inside the chute, and then multiple pressure blocks extend outward at the same time and fit into the inner wall of the drill rod, thereby clamping and fixing the drill rod. After that, the drill rod is lifted by the sling, which improves the lifting efficiency of the drill rod and improves the wear between the mechanisms, which is beneficial to extending the service life of the equipment.

[0024] 2. The drill rod lifter and lifting method of a geological drilling core drilling rig described in the present invention can improve the fit between the pressure block and the inner wall of the drill rod by setting a flexible pad, and by reasonably setting the diameter of the spray hole, after high-pressure water is injected into the guide hole, a small amount of water will be sprayed outward through the spray hole during the process of the high-pressure water pushing the pressure block to slide, thereby cleaning the inner wall of the drill rod, avoiding the problem of slipping between the flexible pad and the drill rod caused by the mud remaining on the surface of the drill rod, and improving the clamping and fixing effect of the drill rod. When the flexible pad is in contact with the drill rod, the spray hole is automatically blocked, so that the water inside the guide hole and the slide groove will not leak, and a certain clamping force is maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 is a perspective view of the present invention;

[0027] Figure 2 is a cross-sectional view of the present invention;

[0028] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0029] Figure 4 is a partial cross-sectional view of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the present invention;

[0031] Figure 6 is a partial cross-sectional view of the scraper strip of the present invention;

[0032] Figure 7 It is a schematic flow chart of the method of the present invention;

[0033] Figure 8 It is a detailed flow chart of step S3 in the present invention.

[0034] In the figure: lifting head 1, sling 2, guide hole 3, water injection pipe 4, chute 5, pressure block 6, grid plate 7, spring 1 8, flexible pad 9, spray hole 10, rotating shaft 11, mounting seat 12, scraper 13, slider 14, elastic rope 15, nut 16, guide groove 17, retaining ring 18, elastic sheet 19, hook head 20, retaining bar 21, groove 22, movable block 23, connecting rod 24, spring 2 25, iron block 26, elastic membrane 27. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0036] like Figures 1 to 5 As shown, a drill rod lifter for a geological drilling core drill rig according to an embodiment of the present invention comprises a lifting head 1; a sling 2 is fixedly connected to the upper end of the lifting head 1; a guide hole 3 is opened inside the lifting head 1, and the upper end of the guide hole 3 is connected to a water injection pipe 4; a group of slide grooves 5 are evenly distributed on the circumference of the bottom side of the lifting head 1, and the slide grooves 5 are connected to the guide hole 3; a pressure block 6 is connected to the sliding seal inside the slide groove 5; a grid plate 7 is fixedly connected to the position near the guide hole 3 inside the slide groove 5; a spring 8 is fixedly connected between the grid plate 7 and the pressure block 6; in the prior art, the arc locking plate is squeezed by the trapezoidal guide block, so that the arc locking plate moves outward and clamps the drill rod, but this The long-term extrusion and friction between the trapezoidal guide block and the arc locking plate will cause a large amount of wear on the two, reducing the service life of the lifter, which is not conducive to the long-term use of the equipment; at this time, when the present invention is working, the lifting head 1 is lowered and inserted into the drill pipe through the sling 2, and then high-pressure water is injected into the guide hole 3 through the water injection pipe 4. After the high-pressure water enters the chute 5, it pushes the pressure block 6 to slide inside the chute 5, and then multiple pressure blocks 6 are extended outward at the same time and fit into the inner wall of the drill pipe, thereby clamping the drill pipe. After that, the drill pipe is lifted by the sling 2, which improves the lifting efficiency of the drill pipe and improves the wear between the mechanisms, which is beneficial to extending the service life of the equipment.

[0037] A flexible pad 9 is fixed to the side of the pressing block 6 away from the grid plate 7; a spray hole 10 is opened inside the pressing block 6, and the spray hole 10 passes through the flexible pad 9; the diameter of the spray hole 10 is smaller than the diameter of the guide hole 3; by setting the flexible pad 9, the degree of fit between the pressing block 6 and the inner wall of the drill pipe can be improved, and by reasonably setting the diameter of the spray hole 10, after high-pressure water is injected into the guide hole 3, a small amount of water will be sprayed outward through the spray hole 10 in the process of the high-pressure water pushing the pressing block 6 to slide, thereby cleaning the inner wall of the drill pipe, avoiding the problem of slipping between the flexible pad 9 and the drill pipe caused by the mud remaining on the surface of the drill pipe, and improving the clamping and fixing effect of the drill pipe. When the flexible pad 9 is in contact with the drill pipe, the spray hole 10 is automatically blocked, so that the water inside the guide hole 3 and the chute 5 will not leak, and a certain clamping force is maintained.

[0038] A rotating shaft 11 is provided inside the guide hole 3, and the rotating shaft 11 is driven by a power component; the lower end of the rotating shaft 11 extends to the bottom of the lifting head 1 and is rotatably connected to the lifting head 1; the lower end of the rotating shaft 11 is fixedly connected to a mounting seat 12; a group of scraping strips 13 are evenly distributed on the circumference of the side surface of the mounting seat 12, and the upper ends of the scraping strips 13 extend to the side surface of the lifting head 1; before the pressing block 6 extends outward, the rotating shaft 11 is driven to rotate by the power component, and then the multiple scraping strips 13 are driven to rotate synchronously through the mounting seat 12, so that the scraping strips 13 scrape the inner wall surface of the drill rod, thereby scraping off the residual soil on the surface of the drill rod, improving the cleaning efficiency of the drill rod, and then after the flexible pad 9 is subsequently fitted with the drill rod, the problem of slipping between the flexible pad 9 and the drill rod can be further avoided.

[0039] The power assembly includes a slider 14, and the slider 14 is slidably and sealedly connected to the inside of the guide hole 3; an elastic rope 15 is fixed between the upper end of the slider 14 and the side wall of the guide hole 3; the lower end of the slider 14 is rotatably connected to the rotating shaft 11; the surface of the rotating shaft 11 is provided with a thread; the lower end of the lifting head 1 is fixedly connected to a nut 16, and the rotating shaft 11 passes through the nut 16 and is threadedly connected to it; a pair of guide grooves 17 are opened inside the lifting head 1 above the slide 5, and both ends of the guide grooves 17 are connected to the guide hole 3; a retaining ring 18 is fixed inside the guide hole 3 near the lower end of the guide groove 17; high-pressure water enters the inside of the guide hole 3 After that, the slider 14 will be pushed downward, and then the slider 14 will drive the shaft 11 to move downward. Since the shaft 11 and the nut 16 are threadedly connected, the shaft 11 rotates and descends at the same time, so that the scraper 13 can also move downward while rotating, thereby peeling off the soil on the inner wall surface of the drill rod, further improving the cleaning effect of the drill rod. Later, when the slider 14 moves to between the two ends of the guide groove 17, it will be blocked by the retaining ring 18, and then the slider 14 and the scraper 13 will stop moving. At this time, the high-pressure water can flow into the inside of the chute 5 through the guide groove 17 and push the pressure block 6 to extend out smoothly.

[0040] A pair of elastic sheets 19 are fixedly connected to the surface of the flexible pad 9 near the spray hole 10, and the elastic sheets 19 are arranged in an arc shape; by providing a pair of elastic sheets 19, when water flows outward through the spray hole 10, part of the water flow will be dispersed by the elastic sheets 19 and splashed along the concave surface of the elastic sheets 19 toward the side of the pressing block 6, thereby flushing the scraper 13, reducing the residual dirt on the surface of the scraper 13, and avoiding the problem that a large amount of dirt adheres to the surface of the scraper 13, which leads to a decrease in its subsequent cleaning effect.

[0041] A hook head 20 is provided at the upper end of the scraper 13, and the bending direction of the hook head 20 is toward the lifting head 1; a group of baffles 21 are evenly distributed on the circumference of the surface of the lifting head 1, and the surface of the baffle 21 is set to an arc surface; the scraper 13 is made of elastic material, and the hook head 20 can contact the arc surface of the baffle 21 during the rotation of the scraper 13; by providing the hook head 20, the scraper 13 can be easily pulled out from the inside of the drill pipe, and the hook head 20 will collide with the baffle 21 during the rotation of the scraper 13, thereby prompting the scraper 13 to shake continuously, shaking off the dirt adhered to its surface, and further improving the self-cleaning efficiency of the scraper 13, and by setting the surface of the baffle 21 to an arc surface, the hook head 20 and the baffle 21 can be squeezed into each other smoothly, thereby reducing the rotation resistance of the scraper 13. Example

[0042] like Figure 6 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a group of grooves 22 are uniformly distributed on the side of the scraper 13 away from the lifting head 1; a movable block 23 is provided inside the groove 22; a connecting rod 24 is fixedly connected to the side of the movable block 23 close to the lifting head 1, and the connecting rod 24 passes through the scraper 13 and is slidably connected thereto; a spring 25 is fixedly connected between the movable block 23 and the side wall of the groove 22; an iron block 26 is fixedly connected to the end of the connecting rod 24 away from the movable block 23; the blocking bar 21 is made of magnetic material; when the scraper When the scraper bar 13 rotates to a position close to the baffle bar 21, the iron block 26 will be attracted by the baffle bar 21, and then the movable block 23 will be pulled away from the inner wall of the drill rod through the connecting rod 24, and the spring 25 will be compressed. When the scraper bar 13 rotates to a position away from the baffle bar 21, the iron block 26 is no longer attracted by the baffle bar 21, and then the spring 25 pushes the movable block 23 to move in the opposite direction, so that the movable block 23 can hit the inner wall of the drill rod, thereby breaking up the harder soil on the surface of the drill rod, making it easier for the scraper bar 13 to scrape off the soil, and further improving the soil scraping efficiency.

[0043] An elastic membrane 27 is fixed to the opening side of the groove 22 . By providing the elastic membrane 27 to seal the groove 22 , it is possible to prevent external soil from entering the groove 22 and affecting the normal movement of the movable block 23 .

[0044] like Figures 7 and 8As shown, a drill rod lifting method for a geological drilling core drilling rig is provided. The method uses the drill rod lifter of the geological drilling core drilling rig, and the method comprises the following steps:

[0045] S1: Lower the lifting head 1 through the sling 2 so that the lifting head 1 is inserted into the drill pipe, and high-pressure water is injected into the guide hole 3 through the water injection pipe 4;

[0046] S2: High-pressure water pushes the slider 14 downward, and the rotating shaft 11 drives the scraper 13 to rotate and move downward. The scraper 13 peels off the soil on the inner wall of the drill pipe. When the slider 14 moves between the two ends of the guide groove 17, it is blocked by the retaining ring 18, and then the slider 14 and the scraper 13 stop moving.

[0047] S3: High-pressure water flows into the chute 5 through the guide groove 17, pushing the pressing block 6 to extend outward and fit against the inner wall of the drill rod, thereby clamping the drill rod, and then lifting the drill rod through the sling 2.

[0048] The detailed steps of step S3 are:

[0049] S3a: High-pressure water flows into the chute 5 through the guide groove 17. As the high-pressure water pushes the pressing block 6 to slide, a small amount of water is sprayed out through the spray hole 10 to clean the inner wall of the drill pipe.

[0050] S3b: When the flexible pad 9 is fitted onto the drill rod, the spray hole 10 is automatically blocked, and the drill rod is clamped and fixed, and then the drill rod is lifted by the sling 2.

[0051] Working principle: The lifting head 1 is lowered and inserted into the drill pipe through the sling 2, and then high-pressure water is injected into the guide hole 3 through the water injection pipe 4. After the high-pressure water enters the chute 5, it pushes the pressure block 6 to slide inside the chute 5, and then multiple pressure blocks 6 extend outward at the same time and fit into the inner wall of the drill pipe, thereby clamping the drill pipe. After that, the drill pipe is lifted by the sling 2, which improves the lifting efficiency of the drill pipe and improves the wear between the mechanisms, which is beneficial to extending the service life of the equipment; by setting the flexible pad 9, the fit between the pressure block 6 and the inner wall of the drill pipe can be improved, and by reasonably setting the diameter of the spray hole 10, after the high-pressure water is injected into the guide hole 3, a small amount of water will pass through the spray hole 10 in the process of the high-pressure water pushing the pressure block 6 to slide. The water in the guide hole 3 and the chute 5 are automatically blocked, so that the water in the guide hole 3 and the chute 5 will not leak out, and a certain clamping force is maintained. Before the pressure block 6 is extended outward, the rotating shaft 11 is driven to rotate by the power component, and then the multiple scraping strips 13 are driven to rotate synchronously through the mounting seat 12, so that the scraping strips 13 scrape the surface of the inner wall of the drill rod, thereby scraping off the mud remaining on the surface of the drill rod, improving the cleaning efficiency of the drill rod, and then after the flexible pad 9 is fitted with the drill rod, the problem of slipping between the flexible pad 9 and the drill rod can be further avoided. After the high-pressure water enters the guide hole 3, it will first push the slider 14 to slide downward, and then the slider 14 drives the shaft 11 to move downward. Since the shaft 11 and the nut 16 are threadedly connected, the shaft 11 rotates and descends at the same time, so that the scraper 13 can also move downward while rotating, thereby peeling off the mud on the inner wall surface of the drill rod, further improving the cleaning effect of the drill rod. After that, when the slider 14 moves to between the two ends of the guide groove 17, it will be blocked by the retaining ring 18, and then the slider 14 and the scraper 13 will stop moving. At this time, the high-pressure water can flow into the inside of the chute 5 through the guide groove 17 and push the pressure block 6 to extend out smoothly. By setting a pair of elastic sheets 19, when the water flows out through the spray hole 10, part of it The water flow will be dispersed by the elastic sheet 19 and splashed along the concave surface of the elastic sheet 19 to the side of the pressure block 6, thereby flushing the scraper 13, reducing the residue of mud on the surface of the scraper 13, and preventing a large amount of mud from adhering to the surface of the scraper 13, which will lead to a decrease in its subsequent cleaning effect; by providing the hook head 20, the scraper 13 can be easily pulled out from the inside of the drill pipe, and the hook head 20 will collide with the baffle 21 during the rotation of the scraper 13, thereby prompting the scraper 13 to shake continuously, shaking off the mud adhering to its surface, further improving the self-cleaning efficiency of the scraper 13, and by setting the surface of the baffle 21 to an arc surface, the hook head 20 and the baffle 21 can be squeezed against each other to make a smooth transition, thereby reducing the rotation resistance of the scraper 13;When the scraper bar 13 rotates to a position close to the stop bar 21, the iron block 26 is attracted by the stop bar 21, and then the connecting rod 24 pulls the movable block 23 away from the inner wall of the drill rod, compressing the second spring 25. When the scraper bar 13 rotates to a position away from the stop bar 21, the iron block 26 is no longer attracted by the stop bar 21, and the second spring 25 pushes the movable block 23 to move in the opposite direction, allowing the movable block 23 to strike the inner wall of the drill rod, thereby breaking up the harder soil on the drill rod surface, making it easier for the scraper bar 13 to scrape the soil, further improving the soil scraping efficiency. By providing an elastic membrane 27 to block the groove 22, it can prevent external soil from entering the groove 22 and affecting the normal movement of the movable block 23.

[0052] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0054] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill rod lifter for a geological drilling core drill rig, characterized by: It comprises a lifting head (1); a sling (2) is fixedly connected to the upper end of the lifting head (1); a guide hole (3) is opened inside the lifting head (1), and the upper end of the guide hole (3) is connected to a water injection pipe (4); a group of slide grooves (5) are evenly distributed on the circumference of the bottom side of the lifting head (1), and the slide grooves (5) are connected to the guide hole (3); a pressure block (6) is connected to the inside of the slide groove (5) in a sliding and sealing manner; a grid plate (7) is fixedly connected to the position of the inside of the slide groove (5) near the guide hole (3); a spring (8) is fixedly connected between the grid plate (7) and the pressure block (6); A flexible pad (9) is fixedly connected to the side of the pressing block (6) away from the grid plate (7); a spray hole (10) is provided inside the pressing block (6), and the spray hole (10) passes through the flexible pad (9); the diameter of the spray hole (10) is smaller than the diameter of the guide hole (3); A rotating shaft (11) is provided inside the guide hole (3), and the rotating shaft (11) is driven by a power assembly; the lower end of the rotating shaft (11) extends to the bottom of the lifting head (1) and is rotatably connected to the lifting head (1); a mounting seat (12) is fixed to the lower end of the rotating shaft (11); a group of scraping strips (13) are evenly distributed on the circumference of the side surface of the mounting seat (12), and the upper ends of the scraping strips (13) extend to the side surface of the lifting head (1); The power assembly includes a slider (14), and the slider (14) is slidingly and sealingly connected to the inside of the guide hole (3); an elastic rope (15) is fixed between the upper end of the slider (14) and the side wall of the guide hole (3); the lower end of the slider (14) is rotatably connected to the rotating shaft (11); the surface of the rotating shaft (11) is provided with a thread; the lower end of the lifting head (1) is fixed with a nut (16), and the rotating shaft (11) passes through the nut (16) and is threadedly connected thereto; a pair of guide grooves (17) are provided inside the lifting head (1) above the slide groove (5), and both ends of the guide groove (17) are connected to the guide hole (3); a retaining ring (18) is fixed inside the guide hole (3) near the lower end of the guide groove (17); A pair of elastic sheets (19) are fixedly connected to the surface of the flexible pad (9) near the spray hole (10), and the elastic sheets (19) are arranged in an arc shape.

2. The drill rod lifter for a geological drilling core drilling rig according to claim 1, characterized in that: A hook portion (20) is provided at the upper end of the scraper bar (13), and the bending direction of the hook portion (20) is toward the lifting head (1); a group of blocking bars (21) are evenly distributed on the circumference of the surface of the lifting head (1), and the surface of the blocking bars (21) is set as an arc surface; the scraper bar (13) is made of elastic material, and the hook portion (20) can contact the arc surface of the blocking bar (21) during the rotation of the scraper bar (13).

3. The drill rod lifter for a geological drilling core drill according to claim 2, characterized in that: A group of grooves (22) are uniformly distributed on the side of the scraper (13) away from the lifting head (1); a movable block (23) is arranged inside the groove (22); a connecting rod (24) is fixedly connected to the side of the movable block (23) close to the lifting head (1), and the connecting rod (24) passes through the scraper (13) and is slidably connected thereto; a second spring (25) is fixedly connected between the movable block (23) and the side wall of the groove (22); an iron block (26) is fixedly connected to the end of the connecting rod (24) away from the movable block (23); and the blocking bar (21) is made of magnetic material.

4. The drill rod lifter for a geological drilling core drilling rig according to claim 3, characterized in that: An elastic membrane (27) is fixedly connected to the opening side of the groove (22).

5. A method for lifting a drill rod of a geological drilling core drilling rig, the method using the drill rod lifter of a geological drilling core drilling rig according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: S1: lowering the lifting head (1) through the sling (2) so that the lifting head (1) is inserted into the drill pipe, and high-pressure water is injected into the guide hole (3) through the water injection pipe (4); S2: The high-pressure water pushes the slider (14) to slide downward, and the rotating shaft (11) drives the scraper (13) to rotate and move downward. The scraper (13) peels the soil on the inner wall surface of the drill pipe downward. After that, when the slider (14) moves to between the two ends of the guide groove (17), it is blocked by the retaining ring (18), and then the slider (14) and the scraper (13) stop moving; S3: High-pressure water flows into the interior of the chute (5) through the guide groove (17), pushing the pressing block (6) outward and fitting it against the inner wall of the drill rod, thereby clamping the drill rod, and then lifting the drill rod through the sling (2).

6. The drill rod lifting method of a geological drilling core drilling rig according to claim 5, characterized in that: The detailed steps of step S3 are: S3a: High-pressure water flows into the interior of the slideway (5) through the guide groove (17). When the high-pressure water pushes the pressing block (6) to slide, a small amount of water is ejected outward through the spray hole (10) to clean the inner wall of the drill pipe; S3b: When the flexible pad (9) is fitted onto the drill rod, the spray hole (10) is automatically blocked, and the drill rod is clamped and fixed, and then the drill rod is lifted by the sling (2).

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