A positioning device for pre-splitting blast hole of slope blasting excavation

Abstract

The utility model relates to the technical field of side slope blasting positioning, especially a pre-splitting blasting hole positioning device for side slope blasting and excavation, comprising a positioning block, a rotating block rotatably connected to the positioning block, a plurality of threaded holes formed in the positioning block, two handles fixedly connected to the positioning block, a fixing assembly threadedly connected to the threaded holes, two angle adjusting assemblies arranged between the positioning block and the rotating block, the angle adjusting assemblies comprising a first arc-shaped block and a second arc-shaped block, the first arc-shaped block and the second arc-shaped block being insertedly connected, an arc-shaped groove formed in the outer circumferential wall of the second arc-shaped block, a plurality of positioning grooves formed in the outer circumferential wall of the second arc-shaped block, the plurality of positioning grooves being respectively in communication with the arc-shaped groove, and a connecting block fixedly arranged on the outer circumferential wall of the first arc-shaped block. The utility model facilitates the operation requirements of side slopes with different inclination angles, provides a stable and accurate angle reference for subsequent drilling operations, reduces the drilling angle deviation, improves the drilling precision, and thus guarantees the pre-splitting blasting effect.

Description

Technical Field

[0001] This utility model relates to the field of slope blasting positioning technology, and in particular to a pre-splitting blasting hole positioning device for slope blasting excavation. Background Technology

[0002] In slope engineering blasting excavation operations, pre-splitting blasting technology is a key process for controlling the excavation profile, reducing the disturbance of blasting to the slope rock mass, and ensuring the later stability of the slope. The core of this technology lies in drilling pre-splitting blasting holes. The drilling angle must match the actual slope of the slope, and the device must be stably fixed on the uneven slope surface to ensure the accuracy of subsequent explosive loading and blasting effect, and avoid problems such as over-excavation, under-excavation, or damage to the rock mass structure caused by drilling deviation. A search revealed a Chinese patent with publication number CN116446787A, which provides a drilling device for pre-splitting blasting. The device uses a vehicle body to provide a mobile base, and works with a semi-circular block, a third motor, and a drill bit to perform drilling operations. It is equipped with an anti-drill jamming device to solve the problem of drill bit jamming. It also has angle adjustment and easy drill bit replacement functions, which improves drilling efficiency to a certain extent. However, during use, it was found that its angle adjustment function was not optimized for the diversity of slope gradients, making it difficult to adapt to the operational needs of slopes with different inclination angles. This easily led to a mismatch between the drilling angle and the slope gradient, reducing drilling accuracy and affecting the pre-splitting blasting effect. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a pre-splitting blasting hole positioning device for slope blasting excavation. During adjustment, the angle adjustment component is used to adjust the angle of the rotating block. The connecting block slides along the arc-shaped groove, and during the sliding process, it drives the rotating block to rotate relative to the positioning block until the angle of the rotating block matches the slope gradient. This facilitates the operation requirements of slopes with different inclination angles, provides a stable and accurate angle reference for subsequent drilling operations, reduces drilling angle deviation, improves drilling accuracy, and thus ensures the pre-splitting blasting effect.

[0004] To solve the above technical problems, this utility model provides the following technical solution: a pre-splitting blasting hole positioning device for slope blasting excavation, including a positioning block, a rotating block rotatably connected to the positioning block, a plurality of threaded holes opened on the positioning block, two handles fixedly connected to the positioning block, a fixing component threadedly connected inside the threaded hole, and two angle adjustment components provided between the positioning block and the rotating block. The angle adjustment component includes a first arc-shaped block and a second arc-shaped block. The first arc-shaped block and the second arc-shaped block are inserted into each other. An arc-shaped groove is formed on the outer peripheral wall of the second arc-shaped block. Multiple positioning grooves are formed on the outer peripheral wall of the second arc-shaped block. The multiple positioning grooves are respectively connected to the arc-shaped groove. A connecting block is fixed on the outer peripheral wall of the first arc-shaped block. The outer wall of the connecting block is slidably connected to the groove wall of the arc-shaped groove. A limiting groove is formed on the connecting block. An insert block is slidably connected inside the limiting groove. The insert block is inserted into the positioning groove.

[0005] Preferably, the two first arc-shaped blocks are fixedly connected to the rotating block, and the two second arc-shaped blocks are fixedly connected to the positioning block.

[0006] By using the above technical solution, the insert block in the limiting groove is pushed so that it engages with the corresponding positioning groove on the second arc-shaped block, thereby locking the angle of the rotating block.

[0007] Preferably, a positioning spring is provided inside the limiting groove, one end of the positioning spring is fixedly connected to the connecting block, and the other end of the positioning spring is fixedly connected to the insert block.

[0008] With the above technical solution, after the rotating block is adjusted to the target angle, the insert block is released, the positioning spring is elastically reset, and the insert block is pushed into the corresponding positioning slot, which facilitates locking after angle adjustment.

[0009] Preferably, the rotating block has a through groove in the middle, a plurality of L-shaped blocks are fixed on the rotating block, an arc-shaped block is provided on one side of the rotating block, the plurality of L-shaped blocks are respectively fixedly connected to the outer wall of the arc-shaped block, a spherical block is rotatably connected inside the arc-shaped block, a U-shaped block is fixedly connected inside the spherical block, a limit block is slidably connected inside the U-shaped block, and two push blocks are fixedly connected to the outer peripheral wall of the limit block.

[0010] Preferably, a drilling motor is installed on one side of the limiting block, and a drill rod is coaxially connected to the output shaft of the drilling motor. The outer peripheral wall of the drill rod is slidably connected to the spherical block and the limiting block, respectively, and the limiting block and the spherical block are inserted into each other.

[0011] The above technical solution uses the output shaft of the drilling motor to drive the drill rod to rotate. The drill rod moves along the axis of the spherical block and the limiting block, and after passing through the through slot of the rotating block, it performs drilling operations on the slope rock mass until the preset depth is reached. This reduces drilling accuracy problems caused by angular deviations and provides a guarantee for the subsequent loading and blasting of explosives.

[0012] Preferably, the fixing component includes a connecting bolt, which is threadedly connected to a threaded hole. A rod is fixedly provided inside the connecting bolt, and an adjusting rod is slidably connected inside the rod. An adjusting bolt is fixedly connected to one end of the adjusting rod, and the external thread of the adjusting bolt is threadedly connected to the connecting bolt. An adjusting wheel is fixedly connected to one end of the adjusting rod.

[0013] Preferably, the end of the insertion rod away from the connecting bolt is provided with a sliding groove, and a hexagonal slider is slidably connected inside the sliding groove. The outer peripheral wall of the insertion rod is provided with multiple grooves, and the multiple grooves are respectively connected to the sliding groove. The hexagonal slider is slidably connected to the groove wall.

[0014] The above technical solution involves first connecting the connecting bolt to the corresponding threaded hole, allowing the insert rod to extend into the preset hole position in the slope rock mass. Then, the adjusting wheel is rotated, causing the adjusting rod to rotate synchronously. The adjusting rod, through its threaded engagement with the adjusting bolt, pushes itself to slide along the inside of the insert rod, thereby driving the hexagonal slider to move within the groove.

[0015] Preferably, the groove has two folding blocks inside, which are rotatably connected. One of the folding blocks is rotatably connected to the insertion rod, and the other folding block is rotatably connected to the hexagonal slider.

[0016] Preferably, the end of the adjusting rod away from the adjusting bolt is rotatably connected to the hexagonal slider.

[0017] Through the above technical solution, the adjusting rod, through the threaded engagement with the adjusting bolt, pushes itself to slide along the inside of the insert rod, thereby driving the hexagonal slider to move in the groove. One of the folded blocks rotates around the insert rod, and the other folded block slides with the hexagonal slider and extends out from the groove, closely fitting with the wall of the slope rock mass hole, thereby fixing the positioning block.

[0018] The beneficial effects of this utility model are as follows: Two angle adjustment components are provided between the positioning block and the rotating block. During adjustment, the angle of the rotating block is adjusted by means of the structural cooperation of the angle adjustment components. Because the first arc-shaped block and the second arc-shaped block are inserted and engaged, and the connecting block on the first arc-shaped block slides along the arc groove of the second arc-shaped block, the rotating block is driven to rotate relative to the positioning block during the sliding process until the angle of the rotating block is adapted to the slope gradient. At this time, the insert block in the limiting groove is pushed, so that the insert block is engaged with the corresponding positioning groove on the second arc-shaped block, and the angle of the rotating block is locked, which is ready for subsequent drilling. The flexible adjustment and fixing of the angle of the rotating block facilitates the needs of slope operation with different inclination angles, provides a stable and accurate angle reference for subsequent drilling operations, reduces drilling angle deviation, improves drilling accuracy, and thus ensures the pre-splitting blasting effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the angle adjustment component structure of this utility model; Figure 3 This is a schematic diagram of the insert block structure of this utility model; Figure 4 This is a schematic diagram of the spherical block structure of this utility model; Figure 5 This is a schematic diagram of the fixing component structure of this utility model; Figure 6 This is a schematic diagram of the folded block structure of this utility model; Figure 7 This is a schematic diagram of the hexagonal slider structure of this utility model.

[0020] In the diagram: 100, positioning block; 101, threaded hole; 102, handle; 200. Rotating block; 201. Through slot; 202. L-shaped block; 203. Arc-shaped block; 204. Spherical block; 205. U-shaped block; 206. Limiting block; 207. Push block; 208. Drilling motor; 209. Drill rod; 300. Fixing component; 301. Connecting bolt; 302. Insert rod; 303. Adjusting rod; 304. Adjusting bolt; 305. Adjusting wheel; 306. Slide groove; 307. Hexagonal slider; 308. Groove; 309. Folding block; 400. Angle adjustment component; 401. First arc block; 402. Second arc block; 403. Arc groove; 404. Positioning groove; 405. Connecting block; 406. Limiting groove; 407. Insert block; 408. Positioning spring. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] like Figures 1-7 As shown, this embodiment provides a pre-splitting blasting hole positioning device for slope blasting excavation, including a positioning block 100, a rotating block 200 rotatably connected to the positioning block 100, a plurality of threaded holes 101 opened on the positioning block 100, two handles 102 fixedly connected to the positioning block 100, a fixing component 300 threadedly connected inside the threaded hole 101, and two angle adjustment components 400 provided between the positioning block 100 and the rotating block 200; The angle adjustment component 400 includes a first arc-shaped block 401 and a second arc-shaped block 402. The first arc-shaped block 401 and the second arc-shaped block 402 are inserted into each other. An arc-shaped groove 403 is formed on the outer peripheral wall of the second arc-shaped block 402. A plurality of positioning grooves 404 are formed on the outer peripheral wall of the second arc-shaped block 402. The plurality of positioning grooves 404 are respectively connected to the arc-shaped groove 403. A connecting block 405 is fixedly provided on the outer peripheral wall of the first arc-shaped block 401. The outer wall of the connecting block 405 is slidably connected to the groove wall of the arc-shaped groove 403. A limiting groove 406 is formed on the connecting block 405. An insert block 407 is slidably connected inside the limiting groove 406. The insert block 407 is inserted into the positioning groove 404.

[0023] The two first arc-shaped blocks 401 are fixedly connected to the rotating block 200, and the two second arc-shaped blocks 402 are fixedly connected to the positioning block 100. The insertion block 407 in the limiting groove 406 is pushed so that the insertion block 407 is inserted into the corresponding positioning groove 404 on the second arc-shaped block 402 to lock the angle of the rotating block 200.

[0024] The limiting groove 406 is provided with a positioning spring 408. One end of the positioning spring 408 is fixedly connected to the connecting block 405, and the other end of the positioning spring 408 is fixedly connected to the insert block 407. After the rotating block 200 is adjusted to the target angle, the insert block 407 is released, the positioning spring 408 elastically returns to its original position, and pushes the insert block 407 into the corresponding positioning groove 404, so as to facilitate locking after angle adjustment.

[0025] The rotating block 200 has a through groove 201 in the middle. Multiple L-shaped blocks 202 are fixedly mounted on the rotating block 200. An arc-shaped block 203 is provided on one side of the rotating block 200. The multiple L-shaped blocks 202 are respectively fixedly connected to the outer wall of the arc-shaped block 203. A spherical block 204 is rotatably connected inside the arc-shaped block 203. A U-shaped block 205 is fixedly connected inside the spherical block 204. A limit block 206 is slidably connected inside the U-shaped block 205. Two push blocks 207 are fixedly connected to the outer peripheral wall of the limit block 206. A drilling motor 2 is installed on one side of the limit block 206. 08. The output shaft of the drilling motor 208 is coaxially connected to a drill rod 209. The outer peripheral wall of the drill rod 209 is slidably connected to the spherical block 204 and the limiting block 206, respectively. The limiting block 206 is inserted into the spherical block 204. The output shaft of the drilling motor 208 drives the drill rod 209 to rotate. The drill rod 209 moves along the axis of the spherical block 204 and the limiting block 206. After passing through the through slot 201 of the rotating block 200, it performs drilling operations on the slope rock mass until the preset depth is reached. This reduces the drilling accuracy problem caused by angle deviation and provides a guarantee for the subsequent loading and blasting of explosives.

[0026] The fixing assembly 300 includes a connecting bolt 301, which is threadedly connected to a threaded hole 101. A rod 302 is fixedly disposed inside the connecting bolt 301. An adjusting rod 303 is slidably connected inside the rod 302. An adjusting bolt 304 is fixedly connected to one end of the adjusting rod 303. The external thread of the adjusting bolt 304 is threadedly connected to the connecting bolt 301. An adjusting wheel 305 is fixedly connected to one end of the adjusting rod 303. A groove 306 is formed at the end of the rod 302 away from the connecting bolt 301, and a wheel 305 is slidably connected inside the groove 306. The hexagonal slider 307 has multiple grooves 308 on the outer peripheral wall of the insertion rod 302. The multiple grooves 308 are respectively connected to the sliding groove 306. The hexagonal slider 307 is slidably connected to the groove wall of the groove 308. First, the connecting bolt 301 is threadedly connected to the corresponding threaded hole 101, so that the insertion rod 302 extends into the preset hole position of the slope rock mass. Then, the adjusting wheel 305 is rotated, which drives the adjusting rod 303 to rotate synchronously. The adjusting rod 303 pushes itself to slide along the inside of the insertion rod 302 through the threaded engagement with the adjusting bolt 304, thereby driving the hexagonal slider 307 to move in the sliding groove 306.

[0027] The groove 308 contains two folded blocks 309, which are rotatably connected. One folded block 309 is rotatably connected to the insert rod 302, and the other folded block 309 is rotatably connected to the hexagonal slider 307. The end of the adjusting rod 303 away from the adjusting bolt 304 is rotatably connected to the hexagonal slider 307. The adjusting rod 303 slides along the insert rod 302 through the threaded engagement with the adjusting bolt 304, thereby driving the hexagonal slider 307 to move in the slide groove 306. One folded block 309 rotates around the insert rod 302, and the other folded block 309 slides with the hexagonal slider 307 and extends out from the groove 308, closely fitting the slope rock mass hole wall to fix the positioning block 100.

[0028] Working principle: The device is moved to the drilling position on the slope through the two handles 102 on the positioning block 100; then, the fixing component 300 is threadedly connected to the threaded holes 101 on the positioning block 100 through the multiple threaded holes 101. Through the cooperation between the fixing component 300 and the slope rock mass, the positioning block 100 is stably installed on the slope surface, providing a fixed foundation for subsequent drilling operations. Two angle adjustment components 400 are provided between the positioning block 100 and the rotating block 200. During adjustment, the angle of the rotating block 200 is adjusted by means of the structure of the angle adjustment components 400. Because the first arc-shaped block 401 and the second arc-shaped block 402 are inserted and engaged, and the connecting block 405 on the first arc-shaped block 401 slides along the arc groove 403 of the second arc-shaped block 402, the rotating block 200 is driven to rotate relative to the positioning block 100 during the sliding process until the angle of the rotating block 200 is adapted to the slope gradient. At this time, the insert block 407 in the limiting groove 406 is pushed, so that the insert block 407 is inserted and engaged with the corresponding positioning groove 404 on the second arc-shaped block 402, thereby locking the angle of the rotating block 200 and preparing for subsequent drilling. The flexible adjustment and fixing of the angle of the rotating block 200 facilitates the needs of slope operations with different inclination angles, provides a stable and accurate angle reference for subsequent drilling operations, reduces drilling angle deviation, improves drilling accuracy, and thus ensures the pre-splitting blasting effect. The through groove 201 in the middle of the rotating block 200 provides a working channel for the drill rod 209. It fixes the arc-shaped block 203 with multiple L-shaped blocks 202. The spherical block 204 inside the arc-shaped block 203 can rotate freely. The U-shaped block 205 fixed inside the spherical block 204 provides sliding space for the limiting block 206. When the angle of the drill rod 209 needs to be adjusted, the two push blocks 207 on the outer peripheral wall of the limiting block 206 are pushed, so that the limiting block 206 slides along the U-shaped block 205. The U-shaped block 205 drives the spherical block 204 to rotate along the arc-shaped block 203, so that the spherical block 204 drives the drill rod 209 to rotate synchronously until the angle of the drill rod 209 matches the requirements of the pre-splitting blasting hole. The output shaft of the drilling motor 208 drives the drill rod 209 to rotate. The drill rod 209 moves along the axis of the spherical block 204 and the limiting block 206. After passing through the through slot 201 of the rotating block 200, it performs drilling operations on the slope rock mass until the preset depth is reached. This reduces the drilling accuracy problem caused by angle deviation and provides a guarantee for the subsequent explosive loading and blasting effect. During fixing, first connect the connecting bolt 301 to the corresponding threaded hole 101, so that the insert rod 302 extends into the preset hole position of the slope rock mass. Then, rotate the adjusting wheel 305 to drive the adjusting rod 303 to rotate synchronously. The adjusting rod 303, through the threaded engagement with the adjusting bolt 304, pushes itself to slide along the inside of the insert rod 302, thereby driving the hexagonal slider 307 to move in the groove 306. When the hexagonal slider 307 moves, it drives the two rotatably connected folded blocks 309 in the groove 308 to unfold. One folded block 309 rotates around the insert rod 302, and the other folded block 309 slides with the hexagonal slider 307 and extends out from the groove 308, closely fitting the hole wall of the slope rock mass, thereby fixing the positioning block 100. This increases the contact area with the rock mass, and even on inclined and uneven slope surfaces, the positioning block 100 can be firmly fixed, reducing device displacement during drilling and further ensuring the stability of the operation. When the angle of the rotating block 200 needs to be adjusted, pull the insert block 407 outward to disengage it from the positioning groove 404. At this time, the positioning spring 408 is compressed. After the rotating block 200 is adjusted to the target angle, release the insert block 407. The positioning spring 408 elastically returns to its original position and pushes the insert block 407 into the corresponding positioning groove 404. This facilitates locking after angle adjustment, simplifies the angle adjustment operation steps, and improves the operational efficiency of pre-splitting blast hole positioning in slope blasting excavation.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for positioning a presplitting blast hole for slope blasting excavation, characterized in that, include: A positioning block (100) is rotatably connected to a rotating block (200). The positioning block (100) has multiple threaded holes (101). Two handles (102) are fixedly connected to the positioning block (100). A fixing component (300) is threaded inside the threaded hole (101). Two angle adjustment components (400) are provided between the positioning block (100) and the rotating block (200). The angle adjustment component (400) includes a first arc-shaped block (401) and a second arc-shaped block (402). The first arc-shaped block (401) and the second arc-shaped block (402) are inserted into each other. An arc-shaped groove (403) is provided on the outer peripheral wall of the second arc-shaped block (402). A plurality of positioning grooves (404) are provided on the outer peripheral wall of the second arc-shaped block (402). The plurality of positioning grooves (404) are respectively connected to the arc-shaped groove (403). A connecting block (405) is fixedly provided on the outer peripheral wall of the first arc-shaped block (401). The outer wall of the connecting block (405) is slidably connected to the groove wall of the arc-shaped groove (403). A limiting groove (406) is provided on the connecting block (405). An insert (407) is slidably connected inside the limiting groove (406). The insert (407) is inserted into the positioning groove (404).

2. A presplit blast hole positioning device for slope blasting as claimed in claim 1 wherein: The two first arc-shaped blocks (401) are fixedly connected to the rotating block (200) respectively, and the two second arc-shaped blocks (402) are fixedly connected to the positioning block (100) respectively.

3. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 2, characterized in that: The limiting groove (406) is provided with a positioning spring (408). One end of the positioning spring (408) is fixedly connected to the connecting block (405), and the other end of the positioning spring (408) is fixedly connected to the insert block (407).

4. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 1, characterized in that: The rotating block (200) has a through groove (201) in the middle. Multiple L-shaped blocks (202) are fixed on the rotating block (200). An arc-shaped block (203) is provided on one side of the rotating block (200). The multiple L-shaped blocks (202) are fixedly connected to the outer wall of the arc-shaped block (203). A spherical block (204) is rotatably connected inside the arc-shaped block (203). A U-shaped block (205) is fixedly connected inside the spherical block (204). A limit block (206) is slidably connected inside the U-shaped block (205). Two push blocks (207) are fixedly connected to the outer peripheral wall of the limit block (206).

5. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 4, characterized in that: A drilling motor (208) is installed on one side of the limiting block (206). The output shaft of the drilling motor (208) is coaxially connected to a drill rod (209). The outer peripheral wall of the drill rod (209) is slidably connected to the spherical block (204) and the limiting block (206) respectively. The limiting block (206) and the spherical block (204) are inserted into each other.

6. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 1, characterized in that: The fixing component (300) includes a connecting bolt (301), which is threadedly connected to a threaded hole (101). A plug rod (302) is fixedly provided inside the connecting bolt (301). An adjusting rod (303) is slidably connected inside the plug rod (302). An adjusting bolt (304) is fixedly connected to one end of the adjusting rod (303). The external thread of the adjusting bolt (304) is threadedly connected to the connecting bolt (301). An adjusting wheel (305) is fixedly connected to one end of the adjusting rod (303).

7. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 6, characterized in that: The insertion rod (302) has a groove (306) at one end away from the connecting bolt (301). A hexagonal slider (307) is slidably connected inside the groove (306). The outer peripheral wall of the insertion rod (302) has multiple grooves (308). The multiple grooves (308) are respectively connected to the groove (306). The hexagonal slider (307) is slidably connected to the groove wall of the groove (308).

8. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 7, characterized in that: The groove (308) is provided with two folding blocks (309), which are rotatably connected. One of the folding blocks (309) is rotatably connected to the insert rod (302), and the other folding block (309) is rotatably connected to the hexagonal slider (307).

9. The pre-splitting blasting hole positioning device for slope blasting excavation as described in claim 8, characterized in that: The end of the adjusting rod (303) away from the adjusting bolt (304) is rotatably connected to the hexagonal slider (307).

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