A line drawing device for blast hole positioning

Abstract

The application belongs to the technical field of blasting construction, in particular to a line drawing device for blasting drilling positioning, which comprises a driving box, a pressing plate is slidably connected to the top of the driving box, the pressing plate and the driving box are connected through a spring rod, a first sliding groove is formed in the bottom of the driving box, a fan is rotatably connected in the first sliding groove, the fan is driven by a motor, a second sliding groove is formed in the periphery of the first sliding groove at the bottom of the driving box, a positioning plate is slidably connected in the second sliding groove, the top of the positioning plate is in contact with the bottom of the pressing plate, and a plurality of marking plates are fixedly connected to the bottom of the positioning plate. The fan installed at the bottom of the driving box can generate wind through rotation effect, blows and processes the sand and stone debris existing on the ground, reduces the influence of sand and stone on the marking of the marking plate, improves the intuitive observation of the marking plate after marking, reduces the occurrence of sandstone covering, and improves the subsequent blasting material filling accuracy.

Description

Technical Field

[0001] This invention belongs to the field of blasting construction technology, specifically a marking device for blasting drilling positioning. Background Technology

[0002] Blasting is a common construction method in modern society. It uses gunpowder blasting or gas blasting to destroy buildings or rocks so that construction teams can demolish the relatively intact buildings or rocks.

[0003] In current technology, blasting operations can achieve the breaking of buildings or rocks through qualitative blasting. By pre-marking blasting points on the building or rock, the blasting range and direction can be controlled, reducing unnecessary losses.

[0004] In use, during qualitative blasting in mines, when construction workers mark the lines, the marked points may be covered by sand and gravel, affecting the subsequent position and causing deviations in the blasting range and direction. Therefore, a marking device for blasting borehole positioning is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A marking device for blasting drilling positioning, comprising a drive box; a pressing plate slidably connected to the top of the drive box; the pressing plate and the drive box connected by a spring rod; a first groove formed at the bottom of the drive box; a fan rotatably connected inside the first groove; the fan being driven by a motor; a second groove formed at the bottom of the drive box around the first groove; a positioning plate slidably connected inside the second groove; the top of the positioning plate and the bottom of the pressing plate in contact; multiple sets of marking plates fixed to the bottom of the positioning plate; and a printing assembly at the bottom of the marking plates. During operation, this step utilizes the fan installed at the bottom of the drive box, which generates wind through rotation to blow away sand and gravel debris on the ground, reducing the impact of sand and gravel on the marking plates, improving the visual observation of the marking plates after marking, reducing the occurrence of sand and gravel obscuring the markings, and improving the accuracy of subsequent blasting material burial.

[0007] Preferably, the drive box has a limiting ring at the bottom; multiple sets of positioning blocks are fixed to the outer side wall of the drive box; a support rod is slidably connected inside the positioning block; the bottom of the support rod is connected to the top of the limiting ring; a third sliding groove is opened at the bottom of the limiting ring; during operation, this step utilizes the limiting ring installed at the bottom of the drive box to support the drive box, freeing the operator's hands. At the same time, the fan rotation allows scattered sand and gravel particles to be blocked by the limiting ring and the third sliding groove, so that some sand and gravel particles are collected inside the third sliding groove, reducing the impact of scattered sand and gravel on the marked line segments and affecting observation.

[0008] Preferably, the printing assembly includes a fourth slide groove; the fourth slide groove is located at a corresponding position on the side wall of the second and first slide grooves; the fourth slide groove is slidably connected to the first and second clamping plates on both sides of the marking plate; the bottom of the first and second clamping plates each has a fifth slide groove; an ink cartridge is slidably connected inside the fifth slide groove; the first and second clamping plates are sloped on the side near the marking plate, and a sponge is fixed to the slope; coating plates are hinged to both sides of the bottom of the marking plate; during operation, this step utilizes the downward pressure of the marking plate to contact the side walls of the first and second clamping plates, allowing the ink on the sponge to adhere smoothly to the side walls, and artificially synthesized colors to remind subsequent workers of the positioning location, increasing the direct observation effect and improving positioning accuracy.

[0009] Preferably, the marking plate has a sixth groove at its bottom; an extrusion block is slidably connected inside the sixth groove; the extrusion block and the sixth groove are connected by a telescopic rod; one end of a connecting rope is fixed to both sides of the top of the extrusion block; the other end of the connecting rope is wound around the hinge shaft of the coating plate; during operation, this step utilizes the pushing effect of the extrusion block to increase the contact area between the marking plate and the ground by rotating the coating plate when marking line segments on the ground, thereby increasing the integrity of the line segments on the ground and reducing the occurrence of pigment breakage.

[0010] Preferably, one end of multiple sets of rubber plates is fixed to the side wall of the first chute; the other end of each rubber plate is inserted into the side wall of the second clamping plate; a limiting block is fixed to the middle of the rubber plate; the limiting block and the side wall of the first chute are connected by an elastic band; during operation, this step utilizes the movement effect of the second clamping plate to move the rubber plate into an arc shape to block part of the airflow generated by the fan during the drawing process on the marking plate, reducing the direct contact between the airflow and the drawn line segment, thus preventing the pigment from spreading to the surroundings.

[0011] Preferably, the top of the positioning plate has a No. 7 sliding groove; the bottom of the extrusion plate slides inside the No. 7 sliding groove; the side wall of the No. 2 sliding groove and the side wall of the positioning plate are both provided with interlocking spiral patterns; during operation, this step utilizes the spiral patterns installed on the side wall of the No. 2 sliding groove and the positioning plate to generate rotation when the positioning plate moves downward, reducing the gaps between multiple sets of No. 1 clamping plates and No. 2 clamping plates that prevent some marking plates from being stained with ink, resulting in broken lines and affecting positioning accuracy.

[0012] Preferably, both the first and second clamping plates are slidably connected to a pressure plate at their tops; the bottom of the pressure plate contacts the sponge; both side walls of the marking plate are hinged to connecting plates via torsion springs; during operation, this step utilizes the squeezing effect of the connecting plate on the pressure plate during the marking plate's descent, which can drive the pressure plate to squeeze the sponge, allowing the sponge to smoothly contact the pigment with the coating plate during the squeezing effect, increasing the wetness of the pigment on the coating plate, enabling it to successfully complete the marking operation, and reducing the impact of drying on the marking.

[0013] Preferably, multiple sets of brushes are fixed to the side wall of the No. 3 chute, and the length of the brushes themselves is greater than the distance between the No. 3 chute and the ground. During operation, this step utilizes the multiple sets of brushes installed on the side wall of the No. 3 chute. Through their own length, they can increase the contact area and friction with the ground after contact, thereby increasing the blocking effect on sand and gravel and reducing the impact of sand and gravel splashing on the drawn lines.

[0014] Preferably, the first clamping plate is equipped with magnets at its top and bottom, and the magnets are magnetically attracted to the iron block located in the fourth slide groove inside the drive box; an elastic rope connects the magnets to the first clamping plate; the second clamping plate is fixedly connected to the top and bottom with magnets, and its structure is the same as that of the first clamping plate; a handle is fixedly connected to the outer side wall of the first clamping plate; during operation, this step utilizes the magnets installed on the first and second clamping plates to provide additional fixing effect for the first and second clamping plates, reducing the likelihood of them detaching from the drive box during movement. At the same time, the elastic rope connecting the magnets to the first and second clamping plates can assist in resetting them, and the first and second clamping plates can be disassembled for easy assembly and cleaning.

[0015] Preferably, the corresponding sidewalls of the first clamping plate and the second clamping plate are fixed with separation blocks; the top of the separation block is set with an incline; during operation, this step utilizes the incline of the separation block itself to provide a pushing effect on the second clamping plate and the first clamping plate during the passage of the marking plate, reducing the occurrence of jamming between the marking plate and the first and second clamping plates.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention provides a marking device for positioning blasting boreholes. By utilizing a fan installed at the bottom of the drive box, the fan can generate wind through rotation to blow away sand and gravel debris on the ground, reducing the impact of sand and gravel on the marking board, improving the intuitive observation of the marking board after marking, reducing the occurrence of sand and gravel covering, and improving the accuracy of subsequent blasting material burial.

[0018] 2. This invention provides a marking device for positioning blasting boreholes. By utilizing the limiting ring installed at the bottom of the drive box, the drive box can be supported, freeing up the operator's hands. At the same time, the fan rotation allows scattered sand and gravel particles to be blocked by the limiting ring and the No. 3 slide, so that some sand and gravel particles are collected inside the No. 3 slide, reducing the impact of scattered sand and gravel on the marked line segments and affecting observation. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the drive box of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the drive box of the present invention;

[0023] Figure 4 This is a cross-sectional view of the clamping plate of the present invention;

[0024] Figure 5 This is a cross-sectional view of the marking plate of the present invention;

[0025] Figure 6 This is a perspective view of the rubber sheet of the present invention;

[0026] Legend:

[0027] 1. Drive box; 11. Extrusion plate; 12. No. 1 slide; 13. Fan; 14. No. 2 slide; 15. Positioning plate; 16. Marking plate; 2. Limiting ring; 21. Positioning block; 22. Support rod; 23. No. 3 slide; 3. No. 4 slide; 31. No. 1 clamping plate; 32. No. 2 clamping plate; 33. No. 5 slide; 34. Ink cartridge; 35. Sponge; 36. Coating plate; 4. No. 6 slide; 41. Extrusion block; 42. Telescopic rod; 43. Connecting rope; 5. Rubber plate; 51. Limiting block; 6. No. 7 slide; 7. Pressure plate; 71. Connecting plate; 8. Brush; 9. Handle; 91. Magnet; 101. Separation block. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-2 As shown, a marking device for blasting borehole positioning includes a drive box 1; a pressing plate 11 is slidably connected to the top of the drive box 1; the pressing plate 11 and the drive box 1 are connected by a spring rod; a first slide groove 12 is opened at the bottom of the drive box 1; a fan 13 is rotatably connected inside the first slide groove 12; the fan 13 is driven by a motor; a second slide groove 14 is opened at the bottom of the drive box 1 around the first slide groove 12; a positioning plate 15 is slidably connected inside the second slide groove 14; the top of the positioning plate 15 contacts the bottom of the pressing plate 11; multiple sets of marking plates 16 are fixedly attached to the bottom of the positioning plate 15; a printing component is provided at the bottom of the marking plate 16; the printing component is used to leave marks on the ground; during operation, when the worker is in the mining area preparing for directional blasting, the drive box 1 can be held by hand. The device is brought to the designated location, where a fan 13 driven by a motor inside the first chute 12 generates airflow to the area to be marked. Then, by applying a squeezing effect to the squeezing plate 11, the positioning plate 15 is pushed, causing the marking plate 16 to contact the ground. At this point, the marking principle between the marking plate 16 and the ground is the same as that of an atomic stamp, so a mark can be left on the ground during the pressing process. At the same time, the ground is marked in conjunction with the unfolding of the printing component, so that the workers can bury the explosives later. This step utilizes the fan 13 installed at the bottom of the drive box 1, which generates airflow through rotation to blow away the sand and gravel debris on the ground, reducing the impact of sand and gravel on the marking of the marking plate 16, improving the visual observation of the marking plate 16 after marking, reducing the occurrence of sand and gravel covering, and improving the accuracy of subsequent explosive burying.

[0030] Please see Figure 1-2As shown, the drive box 1 has a limiting ring 2 at its bottom; multiple sets of positioning blocks 21 are fixed to the outer side wall of the drive box 1; a support rod 22 is slidably connected inside the positioning block 21; the bottom of the support rod 22 is connected to the top of the limiting ring 2; a third sliding groove 23 is opened at the bottom of the limiting ring 2; during operation, when the operator uses the drive box 1 to mark the positioning points, the limiting ring 2 installed on the bottom of the drive box 1 can provide support for the drive box 1. At the same time, when the fan 13 rotates and blows air, the sand and gravel flying around can be blocked by the limiting ring 2. With the help of the third sliding groove 23 opened at the bottom of the limiting ring 2, some of the sand and gravel can be collected. This step uses the limiting ring 2 installed on the bottom of the drive box 1 to support the drive box 1, which is convenient for freeing the operator's hands. At the same time, the rotation of the fan 13 causes the scattered sand and gravel particles to be blocked by the limiting ring 2 and the third sliding groove 23, so that some of the sand and gravel particles are collected inside the third sliding groove 23, reducing the coverage of the marked line segments by the scattered sand and gravel and affecting the observation.

[0031] Please see Figure 1-4 As shown, the printing assembly includes a fourth slide 3; the fourth slide 3 is located at corresponding positions on the side walls of the second slide 14 and the first slide 12; the fourth slide 3 is slidably connected to the first clamping plate 31 and the second clamping plate 32 on both sides of the marking plate 16; the bottom of the first clamping plate 31 and the second clamping plate 32 are both provided with a fifth slide 33; an ink cartridge 34 is slidably connected inside the fifth slide 33; the first clamping plate 31 and the second clamping plate 32 are inclined on the side near the marking plate 16, and a sponge 35 is fixed to the inclined surface; coating plates 36 are hinged to both sides of the bottom of the marking plate 16; during operation, when the operator applies pressure to the extrusion plate 11, the bottom of the marking plate 16... It will come into contact with clamping plate 31 and clamping plate 32. At this time, the sponge 35 installed on the side wall of clamping plate 31 and clamping plate 32 can coat the coating plate 36 installed on the bottom of the marking plate 16 under the action of ink cartridge 34, so that the pigment can be successfully adhered. After the marking plate 16 comes into contact with the ground, the ground rocks are marked with pigment. A conspicuous color is obtained by artificially synthesizing colors. In this step, the downward pressure of the marking plate 16 can come into contact with the side wall of clamping plate 31 and clamping plate 32, so that the pigment on the sponge 35 can be successfully adhered to the side wall 26. The artificially synthesized colors remind the subsequent staff of the location, increase the direct observation effect, and increase the positioning accuracy.

[0032] Please see Figure 5As shown, the bottom of the marking plate 16 has a sixth groove 4; a pressing block 41 is slidably connected inside the sixth groove 4; the pressing block 41 and the sixth groove 4 are connected by a telescopic rod 42; one end of a connecting rope 43 is fixed to both sides of the top of the pressing block 41; the other end of the connecting rope 43 is wound around the hinge shaft of the coating plate 36; during operation, when the marking plate 16 moves downward to the ground, the pressing block 41 installed on the bottom of the marking plate 16 can move upward under the ground pressure, thereby pulling the connecting rope 43 and rotating the coating plate 36 until it is flush with the ground, and marking lines at the specified positions. This step utilizes the pushing effect of the pressing block 41 to increase the contact area between the marking plate 16 and the ground by rotating the coating plate 36 when marking lines on the ground with the marking plate 16, thereby increasing the integrity of the lines on the ground and reducing the occurrence of pigment breakage.

[0033] Please see Figure 6 As shown, one end of multiple sets of rubber plates 5 are fixed to the side wall of the first slide groove 12; the other end of each rubber plate 5 is inserted into the side wall of the second clamping plate 32; a limiting block 51 is fixed to the middle of each rubber plate 5; the limiting block 51 and the side wall of the first slide groove 12 are connected by an elastic band; during operation, when the positioning plate 15 descends and drives the marking plate 16 to contact the ground for line drawing, the second clamping plate 32 will move under the pressure of the marking plate 16, thereby pulling the rubber plates 5. At this time, the pulling effect provided by the limiting block 51 and the elastic band will... The flat surface of the rubber plate 5 is changed to an arc surface to guide the wind force generated by the fan 13 above. This causes some of the airflow to move upward along the arc of the rubber plate 5 and cancel out the downward wind force. Combined with the compression of the space of the first slide groove 12 after the second clamping plate 32 moves, the impact of the airflow on the line segment is reduced. This step utilizes the movement effect of the second clamping plate 32 to drive the rubber plate 5 into an arc shape to block part of the airflow generated by the fan 13 during the drawing process on the marking plate 16, reducing the direct contact between the airflow and the drawn line segment, which would cause the paint to spread in all directions.

[0034] Please see Figure 1-5As shown, the top of the positioning plate 15 has a seventh sliding groove 6; the bottom of the extrusion plate 11 slides inside the seventh sliding groove 6; the side walls of the second sliding groove 14 and the side walls of the positioning plate 15 are both provided with interlocking spiral patterns; during operation, when the operator applies downward pressure to the extrusion plate 11, the spiral patterns on the side walls of the second sliding groove 14 and the positioning plate 15 can cause the positioning plate 15 to rotate during movement, causing the bottom marking plate 16 to continuously engage with multiple sets of first clamping plates 31 and second clamping plates. The plate 32 will make contact, and the seventh groove 6 opened on the top of the positioning plate 15 can be used to place the extrusion plate 11, keeping the extrusion plate 11 in a stable position. This step utilizes the spiral pattern installed on the side wall of the second groove 14 and the positioning plate 15 to generate rotation when the positioning plate 15 moves downward, reducing the gap between the multiple sets of first clamping plates 31 and second clamping plates 32, which would cause some marking plates 16 to not be able to pick up paint, resulting in broken lines and affecting positioning accuracy.

[0035] Please see Figure 4 As shown, both the first clamping plate 31 and the second clamping plate 32 are slidably connected to the top of a pressure plate 7; the bottom of the pressure plate 7 contacts the sponge 35; both side walls of the marking plate 16 are hinged to connecting plates 71 via torsion springs; during operation, as the marking plate 16 descends, the connecting plates 71 exert a squeezing effect on the pressure plate 7, causing the pressure plate 7 to press against the sponge 35, causing the moisture inside the sponge 35 to move to both sides and coat the side walls of the coating plate 36. At this time, when the marking plate 16 continues to move downward, the downward pushing force is greater than the torsion spring torque, which can drive the connecting plates 71 to rotate, thus marking... After plate 16 passes smoothly, during the subsequent reset process, connecting plate 71 will be subjected to ground pressure from clamping plate 31 and clamping plate 32, causing connecting plate 71 to rotate downwards and reset after passing through clamping plate 31 and clamping plate 32, and repositioning itself above pressure plate 7. This step utilizes the squeezing effect of connecting plate 71 on pressure plate 7 during the descent of marking plate 16, which can cause pressure plate 7 to squeeze sponge 35, allowing sponge 35 to smoothly contact the pigment with coating plate 36 under the squeezing effect, increasing the wetness of pigment on coating plate 36, so that the marking operation can be completed smoothly and reducing the impact of drying on marking.

[0036] Please see Figure 2As shown, multiple sets of brushes 8 are fixed to the side wall of the third slide 23, and the length of the brushes 8 is greater than the distance between the third slide 23 and the ground. During operation, when the limiting ring 2 is in contact with the ground, the multiple sets of brushes 8 installed on the side wall of the third slide 23 can use their own length to create a bending effect when in contact with the ground, thus blocking the moving sand and gravel. This step utilizes the multiple sets of brushes 8 installed on the side wall of the third slide 23 to increase the contact area and friction with the ground after contact with the ground, thereby increasing the blocking effect on sand and gravel and reducing the impact of sand and gravel splashing on the drawn lines.

[0037] Please see Figure 3 As shown, the first clamping plate 31 is equipped with magnets 91 at both its top and bottom, and the magnets 91 and the iron block located in the fourth slide 3 inside the drive box 1 are magnetically attracted to each other; an elastic rope connects the magnets 91 and the first clamping plate 31; the second clamping plate 32 is fixedly connected to the top and bottom with magnets 91, and its structure is the same as that of the first clamping plate 31; a handle 9 is fixedly connected to the outer side wall of the first clamping plate 31; during operation, when the operator disassembles, cleans, and replaces the first clamping plate 31 and the second clamping plate 32, when the pulling force is greater than the attraction force provided by the magnets 91, the operator can remove them. At the same time, under the marking plate 16 During descent, the resulting lateral thrust can displace clamping plates 31 and 32. Subsequently, the elasticity of the elastic rope on the magnet 91 is used to reset them, and the displacement process is repeated. This step utilizes the magnet 91 installed on clamping plates 31 and 32 to provide additional fixation for them, reducing the likelihood of them detaching from the drive box 1 during movement. At the same time, the elastic rope connecting the magnet 91 to clamping plates 31 and 32 assists in resetting them and allows clamping plates 31 and 32 to be disassembled for easy assembly and cleaning.

[0038] Please see Figure 4 As shown, the corresponding sidewalls of the first clamping plate 31 and the second clamping plate 32 are fixed with separation blocks 101; the top of the separation block 101 is set with an incline; during operation, when the positioning plate 15 descends and drives the marking plate 16 to contact the sidewalls of the first clamping plate 31 and the second clamping plate 32, the bottom of the squeezing block 41 can contact the pair of separation blocks 101. By setting the top of the separation block 101 itself with an incline, the contact between the coating plate 36 and the sidewalls of the first clamping plate 31 and the first clamping plate 31 can be reduced. This step utilizes the incline of the separation block 101 itself to provide a pushing effect on the second clamping plate 32 and the first clamping plate 31 during the passage of the marking plate 16, reducing the occurrence of jamming between the marking plate 16 and the first clamping plate 31 and the second clamping plate 32.

[0039] Working Principle: When workers are preparing for directional blasting in a mining area, they can carry the drive box 1 to the designated location. The fan 13, driven by a motor inside the first slide 12, generates airflow to the area to be marked. Then, by applying pressure to the compression plate 11, the positioning plate 15 is pushed, causing the marking plate 16 to contact the ground. At this point, the marking principle between the marking plate 16 and the ground is the same as that of an atomic stamp, thus leaving a mark on the ground during the pressing process. Simultaneously, the unfolding of the printing component marks the ground for later burial of the blasting material. During the marking process using the drive box 1 to mark the positioning points, the limiting ring 2 installed at the bottom of the drive box 1 can... The drive box 1 provides support, and during the rotation and blowing of the fan 13, the sand and gravel scattered in all directions can be blocked by the limiting ring 2. The third sliding groove 23 on the bottom of the limiting ring 2 can collect some of the sand and gravel. When the worker applies pressure to the extrusion plate 11, the bottom of the marking plate 16 will contact the first clamping plate 31 and the second clamping plate 32. At this time, the sponges 35 installed on the side walls of the first clamping plate 31 and the second clamping plate 32 can coat the coating plate 36 installed on the bottom of the marking plate 16 under the action of the ink cartridge 34, allowing the ink to adhere smoothly. After the marking plate 16 contacts the ground, the ink is used to mark the rocks on the ground. A conspicuous color is obtained through artificial color synthesis. As the marking plate 16 moves towards... When the marking plate 16 moves to the ground, the pressing block 41 installed on the bottom of the marking plate 16 can move upward under the ground pressure, thereby pulling the connecting rope 43 and rotating the coating plate 36 until it is flush with the ground, and marking is performed at the specified position. When the positioning plate 15 descends and the marking plate 16 contacts the ground for marking, the second clamping plate 32 moves under the pressure of the marking plate 16, thereby pulling the rubber plate 5. At this time, the limiting block 51, together with the pulling effect provided by the elastic band, will change the flat surface of the rubber plate 5 into an arc surface, guiding the wind force generated by the fan 13 above, so that some of the air volume moves upward along the arc of the rubber plate 5 and cancels out the downward wind force. After the second clamping plate 32 moves, it also helps to... The compression of the space in the first chute 12 reduces the impact of airflow on the line segment. During the downward pressure applied to the extrusion plate 11 by the operator, the spiral patterns on the sidewalls of the second chute 14 and the positioning plate 15 allow the positioning plate 15 to rotate during movement. This causes the bottom marking plate 16 to continuously contact multiple sets of first clamping plates 31 and second clamping plates 32. Simultaneously, the seventh chute 6 on the top of the positioning plate 15 allows the extrusion plate 11 to be placed, maintaining its stable position. As the marking plate 16 descends, the connecting plate 71 exerts a squeezing effect on the pressure plate 7, causing the pressure plate 7 to press against the sponge 35. This causes the moisture inside the sponge 35 to move to both sides, coating the sidewalls of the coating plate 36.As the marking plate 16 continues to move downwards, the downward pushing force exceeds the torsion spring torque, causing the connecting plate 71 to rotate, allowing the marking plate 16 to pass smoothly. During the subsequent reset process, the connecting plate 71 is subjected to ground pressure from the first clamping plate 31 and the second clamping plate 32, causing it to rotate downwards and reset after passing through the first clamping plate 31 and the second clamping plate 32, repositioning itself above the pressure plate 7. During the contact between the limiting ring 2 and the ground, the multiple sets of brushes 8 installed on the side wall of the third slide 23 utilize their length to create a bending effect upon contact with the ground, obstructing the moving sand and gravel. This is achieved when the workers are manipulating the first clamping plate 31 and the second clamping plate 32. During the disassembly, cleaning, and replacement of plate 32, when the pulling force exceeds the attractive force provided by magnet 91, the worker can remove it. Simultaneously, as the marking plate 16 descends, the resulting lateral thrust can displace clamping plates 31 and 32. The plates are then reset by the elasticity of the elastic cord on magnet 91, repeating the displacement process. During the descent of positioning plate 15, which causes marking plate 16 to contact the side walls of clamping plates 31 and 32, the bottom of pressing block 41 can contact a pair of separating blocks 101. The inclined surface at the top of separating blocks 101 reduces contact between coating plate 36 and clamping plates 31 and their side walls.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A marking device for positioning blasting boreholes, comprising a drive box (1); a pressing plate (11) is slidably connected to the top of the drive box (1); the pressing plate (11) and the drive box (1) are connected by a spring rod; a first sliding groove (12) is provided at the bottom of the drive box (1); a fan (13) is rotatably connected inside the first sliding groove (12); the fan (13) is driven by a motor; characterized in that: The bottom of the drive box (1) is provided with a second slide groove (14) located around the first slide groove (12); a positioning plate (15) is slidably connected inside the second slide groove (14); the top of the positioning plate (15) is in contact with the bottom of the extrusion plate (11); multiple sets of marking plates (16) are fixedly connected to the bottom of the positioning plate (15). The drive box (1) is provided with a limiting ring (2) at the bottom; multiple sets of positioning blocks (21) are fixed to the outer side wall of the drive box (1); a support rod (22) is slidably connected inside the positioning block (21); the bottom of the support rod (22) is connected to the top of the limiting ring (2); a third sliding groove (23) is opened at the bottom of the limiting ring (2). The second slide (14) and the first slide (12) are respectively provided with a fourth slide (3) at corresponding positions on their side walls; the third slide (23) is slidably connected to a first clamping plate (31) and a second clamping plate (32) on both sides of the marking plate (16); the bottom of the first clamping plate (31) and the second clamping plate (32) are respectively provided with a fifth slide (33); an ink cartridge (34) is slidably connected inside the fifth slide (33); the first clamping plate (31) and the second clamping plate (32) are inclined on the side near the marking plate (16), and a sponge (35) is fixed to the inclined side; a coating plate (36) is hinged to both sides of the bottom of the marking plate (16). The bottom of the marking plate (16) is provided with a sixth groove (4); an extrusion block (41) is slidably connected inside the sixth groove (4); the extrusion block (41) and the sixth groove (4) are connected by a telescopic rod (42); one end of a connecting rope (43) is fixed to both sides of the top of the extrusion block (41); the other end of the connecting rope (43) is wound around the shaft of the coating plate (36); The first slide (12) has multiple sets of rubber plates (5) fixed to one end of its side wall; the other end of each rubber plate (5) is inserted into the side wall of the second clamping plate (32); a limiting block (51) is fixed to the middle of the rubber plate (5); the limiting block (51) and the side wall of the first slide (12) are connected by an elastic band.

2. The marking device for positioning blasting boreholes according to claim 1, characterized in that: The top of the positioning plate (15) is provided with a No. 7 slide groove (6); the bottom of the extrusion plate (11) slides inside the No. 7 slide groove (6); the side wall of the No. 2 slide groove (14) and the side wall of the positioning plate (15) are provided with interlocking spiral patterns.

3. The marking device for positioning blasting boreholes according to claim 1, characterized in that: The top of the first clamping plate (31) and the second clamping plate (32) are slidably connected to the pressure plate (7); the bottom of the pressure plate (7) is in contact with the sponge (35); the two side walls of the marking plate (16) are hinged with connecting plates (71) by torsion springs.

4. The marking device for positioning blasting boreholes according to claim 1, characterized in that: The sidewall of the No. 3 slide (23) is fixed with multiple sets of brushes (8), and the length of the brushes (8) is greater than the distance between the No. 3 slide (23) and the ground.

5. A marking device for positioning blasting boreholes according to claim 1, characterized in that: The first clamping plate (31) is provided with magnets (91) at the top and bottom, and the magnets (91) and the iron block located in the fourth slide (3) inside the drive box (1) are attracted by magnetic force; an elastic rope is connected between the magnets (91) and the first clamping plate (31); the second clamping plate (32) is fixed with magnets (91) at the top and bottom, and its structure is the same as that of the first clamping plate (31); a handle (9) is fixed to the outer side wall of the first clamping plate (31).

6. The marking device for positioning blasting boreholes according to claim 1, characterized in that: The first clamping plate (31) and the second clamping plate (32) are each fixedly connected to a separation block (101) on their corresponding sidewalls; the top of the separation block (101) is set at an angle.

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