A standard measuring device for blast hole drilling

Abstract

The application relates to the technical field of measuring devices, and discloses a blasting hole drilling standard measuring device which comprises a shell, a measuring assembly arranged in the shell, a rotating shaft, a winding disc connected to the outer wall of the rotating shaft, a measuring rope wound on the winding disc, one end of the measuring rope connected with the winding disc, a thimble connected with the other end of the measuring rope, and a weight rotatably connected to the thimble. The measuring assembly further comprises a locking part used for locking a first gear and a second gear, and a prompting part used for prompting when the drilling depth is qualified. Through the arrangement of the measuring assembly, the weight can stably roll and drop along the drilling wall, the drilling depth is measured by using the measuring rope, and the length of the measuring rope pulled out is converted into an intuitive reading, so that the operation is relatively convenient.

Description

Technical Field

[0001] This invention relates to the field of measuring device technology, and specifically to a standard measuring device for blast hole drilling. Background Technology

[0002] In mining, tunneling, and infrastructure construction, blasting holes are specific holes pre-drilled for blasting operations. Depending on construction needs, they can be designed with different diameters, depths, and angles. They are the core carriers for releasing blasting energy and breaking up the medium, directly impacting blasting effectiveness and construction safety. Because blasting operations require precise control of the distribution and amount of explosives within the hole to achieve the desired breaking range and avoid over-excavation, under-excavation, or slope instability, the actual depth of the blasting hole is crucial for calculating the charge and determining blasting parameters. Furthermore, the actual hole depth may deviate from the design value due to variations in geological conditions and fluctuations in drilling equipment accuracy. Therefore, measuring the blasting hole depth is essential. Measurement verifies whether the drilling quality meets design standards, ensures reasonable energy distribution in subsequent blasting operations, and provides data support for standardized blasting operations. In current practices for measuring blasting hole depth, the drilling rig is a widely used tool.

[0003] However, the existing technology has the following problems:

[0004] The leveling rod is usually quite long and has a certain weight. When performing continuous measurements in multiple holes, operators need to hold and move the leveling rod for a long time, which is physically demanding. During the measurement operation, the leveling rod must first be inserted into the borehole, then bend over to the top of the borehole to carefully align and read the scale data. After the measurement is completed, the leveling rod must be pulled out. The bending over and observing actions need to be repeated frequently throughout the process. This operation mode is not only cumbersome and inflexible, but also significantly increases the labor intensity of operators due to the long time spent holding and moving the rod and bending over. Especially in large-scale blasting projects, it can easily reduce measurement efficiency and ease of operation. Summary of the Invention

[0005] The purpose of this invention is to provide a standard measuring device for blasting hole drilling in order to solve the above-mentioned problems. It aims to overcome the inconvenience and high labor intensity of the existing technology that uses a measuring rod, which is long and heavy, requires frequent bending over to read the measurements. Details are provided below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a standard measuring device for blasting hole drilling, comprising a housing; a measuring component is disposed within the housing, the measuring component including a rotating shaft rotatably mounted within the housing, a winding reel connected to the outer wall of the rotating shaft, a measuring rope wound on the winding reel, one end of the measuring rope connected to the winding reel, and the other end of the measuring rope connected to a collar, a weight rotatably connected to the collar, the weight being a roller type, the weight capable of rolling to the bottom of the borehole and pulling out the measuring rope, a nut block slidably connected through the top of the housing, a lead screw rotatably mounted within the housing, a second gear connected to the outer wall of the lead screw, a first gear connected to the outer wall of the rotating shaft, a first pointer connected to the top of the nut block, and a first scale plate mounted on the top of the housing, the first pointer capable of displaying the length of the measuring rope pulled out on the first scale plate; the measuring component further includes a locking part for locking the first gear and the second gear; the measuring component further includes a prompting part for indicating when the borehole measurement depth is qualified.

[0008] Preferably, the lead screw is threadedly connected to the nut block, the first gear meshes with the second gear, and when the measuring rope is pulled out, it drives the rotating shaft to rotate through the winding reel. When the rotating shaft rotates, the first gear and the second gear drive the lead screw to rotate, and when the lead screw rotates, it can drive the nut block to move horizontally.

[0009] Preferably, a rocker arm is connected to the rotating shaft, and the rocker arm is located outside the housing.

[0010] Preferably, two layers are installed inside the housing, with a gap between the two layers. The measuring rope passes through the gap between the two layers, and a guide rod is installed inside the housing, which contacts the measuring rope.

[0011] Preferably, the locking part includes a handle, which is mounted on the top of the housing. A slide rod is slidably connected to the handle, and two springs are connected between the slide rod and the handle. A groove block is connected to the end of the slide rod away from the handle. Two locking rods are slidably connected through the side wall of the housing, and a sliding shaft is connected between the two locking rods. The two locking rods can lock the meshing part of the first gear and the second gear. An inclined groove is provided on the groove block, and the sliding shaft is slidably connected to the inclined groove of the groove block. When the groove block moves upward, the two locking rods are disengaged from the first gear and the second gear through the cooperation of the inclined groove and the sliding shaft.

[0012] Preferably, the prompting part includes a disc mounted on a housing. A rotating rod is rotatably mounted on the inner side of the disc. A first guide rod and a second guide rod are respectively connected to the two ends of the rotating rod. An arc-shaped groove is provided on the disc, and the second guide rod passes through the arc-shaped groove of the disc. A sliding groove is provided on the nut block. The end of the first guide rod away from the rotating rod is slidably connected to the sliding groove. When the nut block moves, the rotating rod is driven to rotate through the cooperation of the sliding groove and the first guide rod. A paddle is connected to the end of the second guide rod away from the rotating rod. An arc-shaped guide rail is mounted on the disc, and a prompting bell is slidably connected to the arc-shaped guide rail. A trigger plate is mounted on the prompting bell. The trigger plate is located on the movement trajectory of the paddle. When the paddle contacts the trigger plate, it can trigger the prompting bell to sound.

[0013] Preferably, the alarm bell is threaded with an adjusting screw, which is used to fix the position of the alarm bell on the arc-shaped guide rail.

[0014] Preferably, a second pointer is connected to the end of the second optical rod away from the rotating rod, and a second scale plate is installed on the disk, the second pointer being able to display the drilling measurement depth on the second scale plate.

[0015] Preferably, the measuring assembly further includes a cleaning unit, which includes two sliders slidably connected to two layers, both sliders being located in the gap between the two layers. Brushes are connected to the sides of the two sliders closest to each other, and both brushes are in contact with the measuring rope. Connecting rods are connected to the two sliders, and a slip ring is connected between the two connecting rods. An annular groove is provided on the rotating shaft, and a sliding tongue is provided on the inner wall of the slip ring. The sliding tongue of the slip ring is slidably connected to the annular groove. When the rotating shaft rotates, the slip ring reciprocates through the cooperation of the annular groove and the sliding tongue.

[0016] The beneficial effects are:

[0017] 1. This standard measuring device for blasting hole drilling, through the setting of the measuring components, allows the hammer to roll stably down along the borehole wall. The drilling depth is measured using a measuring rope, and the length of the measuring rope is then converted into a visual reading, making the operation relatively convenient. By utilizing the cooperation between the locking part and the measuring components, gripping the slide bar and handle allows for locking to begin measurement, and releasing the slide bar and handle locks the first and second gears, thus locking the measuring rope and hammer, further simplifying the operation.

[0018] 2. This standard measuring device for blasting hole drilling, through the setting of the prompting section, ensures that when the drilling depth reaches the standard value during actual measurement, the lever contacts the trigger plate, triggering the prompt bell to emit an audible alert. Operators do not need to continuously monitor the scale plate; they can determine the depth is acceptable simply by the sound, making operation more convenient, especially suitable for scenarios with low light or multiple devices operating simultaneously. Utilizing the cooperation of the second pointer and the second scale plate, the second pointer amplifies its travel using the lever principle, resulting in higher accuracy and clarity of the displayed scale. Simultaneously, it allows for dual verification with the first scale plate, achieving more accurate measurement readings, enabling self-checking, and improving data reliability.

[0019] 3. The standard measuring device for blasting hole drilling, through the setting of the cleaning section, allows the two brushes to be aligned and cleaned when the measuring rope is retracted, avoiding the accumulation of dust and impurities on the measuring rope in the borehole, which would affect the number of rotations of the winding reel during winding and ultimately affect the measurement accuracy. Furthermore, during cleaning, the two sliders can drive the two brushes to move back and forth, thereby increasing the contact area between the brushes and the measuring rope and enhancing the cleaning effect of the brushes. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the shell structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the measurement component structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the measuring rope structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the locking part structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the slot block structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the prompting part structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the rotating rod structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the alarm bell structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the cleaning section structure of the present invention;

[0031] Figure 11 This is a schematic diagram of the slip ring structure of the present invention.

[0032] The annotations in the attached figures are explained as follows:

[0033] 1. Shell; 11. Sheet;

[0034] 2. Measuring components; 21. Rotating shaft; 22. Reel; 23. Measuring rope; 24. Collar; 25. Weight; 26. Rocker arm; 27. Lead screw; 28. First gear; 29. ​​Second gear; 210. Nut block; 211. First pointer; 212. First scale plate; 213. Guide rod;

[0035] 3. Locking part; 31. Handle; 32. Slide rod; 33. Spring; 34. Groove block; 35. Locking rod; 36. Slide shaft;

[0036] 4. Notification section; 41. Disc; 42. Rotating rod; 43. First guide rod; 44. Second guide rod; 45. Second pointer; 46. Paddle; 47. Arc-shaped guide rail; 48. Notification bell; 49. Trigger plate; 410. Adjustment screw; 411. Second scale plate; 412. Slide groove;

[0037] 5. Cleaning section; 51. Slider; 52. Brush; 53. Connecting rod; 54. Slip ring; 55. Annular groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] Example 1

[0040] In existing technologies, most borehole depth measurements are done using a leveling rod. When measuring, the leveling rod needs to be inserted into the borehole, and then the operator needs to bend over to observe the scale aligned with the top of the borehole, record the depth data, and then pull out the leveling rod. Because the leveling rod is long and heavy, it is inconvenient to operate for a long time and to bend over frequently to observe the readings. The labor intensity is also high. This embodiment is invented to solve the above problems.

[0041] Please see Figure 1 - Figure 6 A standard measuring device for blasting hole drilling includes: a housing 1; a measuring component 2 is disposed inside the housing 1, the measuring component 2 including a rotating shaft 21, the rotating shaft 21 being rotatably mounted inside the housing 1, a winding reel 22 being connected to the outer wall of the rotating shaft 21, a measuring rope 23 being wound on the winding reel 22, one end of the measuring rope 23 being connected to the winding reel 22, and the other end of the measuring rope 23 being connected to a collar 24, a counterweight 25 being rotatably connected to the collar 24, the counterweight 25 being configured as a roller, the counterweight 25 being able to roll to the bottom of the borehole and pull out the measuring rope 23, and a nut being slidably connected through the top of the housing 1. Block 210, a lead screw 27 is rotatably mounted inside the housing 1, a second gear 29 is connected to the outer wall of the lead screw 27, a first gear 28 is connected to the outer wall of the rotating shaft 21, a first pointer 211 is connected to the top of the nut block 210, and a first scale plate 212 is mounted on the top of the housing 1. The first pointer 211 can display the length of the measuring rope 23 pulled out on the first scale plate 212. The lead screw 27 is threadedly connected to the nut block 210, and the first gear 28 meshes with the second gear 29. When the measuring rope 23 is pulled out, it drives the rotating shaft 21 to rotate through the winding reel 22. When the rotating shaft 21 rotates, it utilizes the first... Gear 28 and the second gear 29 drive the lead screw 27 to rotate. When the lead screw 27 rotates, it can drive the nut block 210 to move horizontally. During measurement, the housing 1 is placed on the drill hole, and then the weight 25 falls, causing it to roll to the bottom of the drill hole. As the weight 25 rolls, it steadily pulls out the measuring rope 23 using its own weight, ensuring the pulled-out length matches the drill hole depth. Simultaneously, as the measuring rope 23 is pulled out, the rotating shaft 21 rotates and, through the meshing of the first gear 28 and the second gear 29, drives the lead screw 27 to rotate, causing the nut block 210 to slide to the right on the top of the housing 1. Due to the measurement... The length of the measuring rope 23 pulled out is related to the number of rotations of the winding reel 22. Therefore, the number of rotations of the lead screw 27 is related to the measured depth of the borehole. The distance the nut block 210 moves to the right is related to the number of rotations of the lead screw 27. Therefore, after conversion, the distance the nut block 210 drives the first pointer 211 to move on the first scale plate 212 can reflect the measured depth of the borehole. The scale mark is set at the corresponding position on the first scale plate 212, so that the first pointer 211 can intuitively display the length of the measuring rope 23 pulled out, i.e. the borehole depth, on the first scale plate 212.

[0042] Furthermore, a rocker arm 26 is connected to the rotating shaft 21, and the rocker arm 26 is located outside the housing 1. After the measurement is completed, the operator rotates the rocker arm 26 to drive the rotating shaft 21 to rotate, which in turn drives the take-up reel 22 to retract the measuring rope 23. Based on the same principle as above, the nut block 210 drives the first pointer 211 to move to the left and reset, making the operation convenient.

[0043] In addition, two shelves 11 are installed inside the housing 1, with a gap between them. The measuring rope 23 passes through the gap between the two shelves 11. A guide rod 213 is installed inside the housing 1, and the guide rod 213 contacts the measuring rope 23. The gap between the two shelves 11 is wider than the diameter of the measuring rope 23, forming a channel-type constraint structure. When the measuring rope 23 is pulled out or retracted, it needs to pass through the gap to prevent the measuring rope 23 from swinging randomly inside the housing 1 and to ensure its movement path is stable. The guide rod 213 is located between the winding reel 22 and the shelf 11. Its outer wall is smooth and forms a support when it contacts the lower surface of the measuring rope 23, further limiting the direction of the measuring rope 23 so that its path from the winding reel 22 to the gap between the shelf 11 is straight. This disperses the tension of the measuring rope 23 on the edge of the winding reel 22, reduces local stress concentration, and extends the service life of the measuring rope 23.

[0044] In addition, the measuring component 2 also includes a locking part 3 for locking the first gear 28 and the second gear 29; the locking part 3 includes a handle 31, which is mounted on the top of the housing 1. A slide rod 32 is slidably connected to the handle 31. Two springs 33 are connected between the slide rod 32 and the handle 31. A groove block 34 is connected to the end of the slide rod 32 away from the handle 31. Two locking rods 35 are slidably connected through the side wall of the housing 1. A sliding shaft 36 is connected between the two locking rods 35. The two locking rods 35 can lock the meshing part of the first gear 28 and the second gear 29. An inclined groove is provided on the groove block 34. The sliding shaft 36 and the groove block are connected... The inclined groove of block 34 is slidably connected. When block 34 moves upward, the two locking rods 35 are disengaged from the first gear 28 and the second gear 29 through the cooperation of the inclined groove and the sliding shaft 36. The handle 31 is used to lift the housing 1 for easy carrying and handling. Under normal conditions, the two locking rods 35 are engaged with the meshing of the first gear 28 and the second gear 29, so that the first gear 28 and the second gear 29 cannot rotate temporarily. Therefore, the rotating shaft 21 and the winding reel 22 are also locked, so that the measuring rope 23 cannot be released. The counterweight 25 is suspended inside the housing 1 to prevent the counterweight 25 from falling out when not measuring. When measurement is required, after the housing 1 is placed stably, the operator... The operator pulls the slide bar 32 upwards, causing it to overcome the elastic force of the spring 33. Simultaneously, the slide bar 32 moves the groove block 34 upwards, causing its inclined groove to move upwards as well. This generates a horizontal leftward thrust on the slide shaft 36, causing the slide shaft 36 to move the two locking rods 35 away from the first gear 28 until the two locking rods 35 disengage from the meshing gap between the first gear 28 and the second gear 29, releasing the lock and allowing the rotating shaft 21 to rotate freely. The measuring rope 23 can then be pulled out or retracted normally. At this point, the weight 25 falls due to gravity, and the measurement begins. When winding up the measuring rope 23, one hand should also firmly grip the slide bar 32 and the handle. 31. With the other hand, crank the rocker arm 26 to ensure the stability of the housing 1. After measurement, release the handle 31. The spring 33 returns to its original shape, pushing the slide bar 32 and the groove block 34 back to their original positions. The two locking rods 35 then return to their original positions and engage again with the meshing of the first gear 28 and the second gear 29, thus locking the device. By utilizing the cooperation between the locking part 3 and the measuring component 2, the device can be locked by gripping the slide bar 32 and the handle 31, and measurement can begin. Releasing the slide bar 32 and the handle 31 will lock the first gear 28 and the second gear 29, thus locking the measuring rope 23 and the counterweight 25. The operation is convenient.

[0045] Example 2

[0046] Based on Example 1, in actual drilling operations, the borehole may be set at different angles due to geological requirements, which will cause the placement angle of the shell 1 to change accordingly. This may make it difficult to observe the first scale plate 212 due to the tilt of the angle and the light. This example is invented to solve the above problems.

[0047] Please see Figure 1, Figure 7 - Figure 9 The measuring component 2 also includes a prompting part 4 for indicating when the borehole measurement depth is qualified; the prompting part 4 includes a disc 41, which is mounted on the housing 1. A rotating rod 42 is rotatably mounted on the inner side of the disc 41. A first guide rod 43 and a second guide rod 44 are respectively connected to the two ends of the rotating rod 42. An arc-shaped groove is provided on the disc 41, and the second guide rod 44 passes through the arc-shaped groove of the disc 41. A sliding groove 412 is provided on the nut block 210, and the end of the first guide rod 43 away from the rotating rod 42 is slidably connected to the sliding groove 412. When the nut block 210 moves, it drives the rotating rod 42 to rotate through the cooperation of the slide groove 412 and the first guide rod 43. The end of the second guide rod 44 away from the rotating rod 42 is connected to a paddle 46. An arc-shaped guide rail 47 is installed on the disc 41, and a prompting bell 48 is slidably connected to the arc-shaped guide rail 47. A trigger plate 49 is installed on the prompting bell 48. The trigger plate 49 is located on the movement trajectory of the paddle 46. When the paddle 46 contacts the trigger plate 49, it can trigger the prompting bell 48 to sound. Before measurement, the staff will drill according to the... To determine the standard depth requirement for the hole, first adjust the position of the indicator bell 48 on the arc-shaped guide rail 47. Since the standard depth corresponds to a specific moving distance of the nut block 210, and the nut block 210 moves, it pushes the first guide rod 43 through the slide groove 412. The first guide rod 43 drives the rotating rod 42 to rotate with the hinge point between the rotating rod 42 and the disc 41 as the fulcrum. When the rotating rod 42 rotates, it will also drive the paddle 46 to move along the arc-shaped trajectory. Therefore, fixing the indicator bell 48 at the position corresponding to the standard depth on the movement trajectory of the paddle 46 will ensure that the bell rings when the depth is qualified. During the measurement process, as the measuring rope 23 is pulled out, the nut block 210 moves horizontally, and the paddle 46 moves towards the trigger plate 49 along the arc-shaped trajectory with the first guide rod 43. When the drilling depth reaches the standard value, the paddle 46 just contacts the trigger plate 49, triggering the indicator bell 48 to emit an audible prompt. The operator does not need to keep staring at the scale plate and can judge the depth as qualified just by sound, making the operation more convenient, especially suitable for scenarios with low light or multiple devices operating at the same time.

[0048] It is worth noting that the bell 48 is threaded with an adjusting screw 410, which is used to fix the position of the bell 48 on the arc-shaped guide rail 47. Under normal conditions, the rear end of the adjusting screw 410 is tightly pressed against the outer wall of the disc 41, causing the adjusting screw 410 to drive the bell 48 to exert force on the arc-shaped guide rail 47, thereby increasing the friction between the bell 48 and the arc-shaped guide rail 47, and thus temporarily fixing the bell 48 on the arc-shaped guide rail 47. When it is necessary to adjust the position of the bell 48 to match the depth standard, the operator only needs to loosen the adjusting screw 410 counterclockwise to separate the rear end of the adjusting screw 410 from the disc 41. After the position of the bell 48 is adjusted to the correct position, tighten the adjusting screw 410 clockwise. The rear end of the adjusting screw 410 is then tightly pressed against the outer wall of the disc 41 again. The friction generated by the self-locking thread fixes the bell 48 in the current position, preventing the bell 48 from shifting due to vibration during the measurement process and ensuring the accuracy of the indication position.

[0049] It is worth mentioning that the end of the second guide rod 44 furthest from the rotating rod 42 is connected to a second pointer 45, and a second scale plate 411 is mounted on the disc 41. The second pointer 45 can display the drilling depth on the second scale plate 411. The cooperation between the second pointer 45 and the second scale plate 411 optimizes and supplements the measurement function of the first scale plate 212. The surface of the second scale plate 411 is engraved with depth scales, which facilitates the adjustment of the position of the indicator bell 48. Furthermore, the depth scale ratio and accuracy of the second scale plate 411 are greater than those of the first scale plate 212, which can more accurately reflect the subtle differences in drilling depth. The length of the first guide rod 43 from the rotation center of the rotating rod 42 is less than the length of the second guide rod 44 from the rotation center of the rotating rod 42. When the nut block 210 drives the first... When the optical rod 43 is displaced, the rotating rod 42 drives the second optical rod 44 to have a larger displacement stroke, which causes the second pointer 45 to have a larger rotation stroke under the lever amplification effect. Therefore, the second pointer 45 has a wider scale interval on the second scale plate 411, and the reading is clearer and more accurate. The second scale plate 411 is mounted on the disk 41, and its angle can be adjusted according to the installation position of the disk 41. With the sound prompt of the bell 48, the staff can obtain a high-precision reading through the second pointer 45, confirm the qualified status through sound, and perform double verification by comparing the reading of the first scale plate 212. When the two readings are inconsistent, they need to be calibrated in time, which achieves the effect of self-checking and comprehensively improves the observation convenience and data reliability under different working conditions.

[0050] Example 3

[0051] Based on Embodiment 2, since there is a lot of dust and impurities inside the borehole, and the measuring rope 23 inevitably has dust and impurities attached to its surface after entering the borehole, when a lot of dust and impurities are attached to the surface of the measuring rope 23, its thickness will increase, which will affect the number of rotations of the winding reel 22 during winding, and ultimately affect the measurement accuracy. This embodiment is invented to solve the above problems.

[0052] Please see Figure 2 , Figure 10 , Figure 11 The measuring assembly 2 also includes a cleaning unit 5, which includes two sliders 51. The two sliders 51 are slidably connected to two shelves 11, respectively, and are located in the gap between the two shelves 11. Brushes 52 are connected to the sides of the two sliders 51 closest to each other. Both brushes 52 are in contact with the measuring rope 23. When the measuring rope 23 is retracted, it remains in continuous contact with the two brushes 52, allowing the brushes 52 to clean the measuring rope 23. This prevents excessive dust and impurities from adhering to the measuring rope 23 in the borehole, which could affect the number of rotations of the winding reel 22 during winding and ultimately affect the measurement accuracy. Connecting rods 53 are connected to the two sliders 51 respectively. A slip ring 54 is connected between the connecting rods 53. An annular groove 55 is provided on the rotating shaft 21. A sliding tongue is provided on the inner wall of the slip ring 54. The sliding tongue of the slip ring 54 is slidably connected to the annular groove 55. When the rotating shaft 21 rotates, the slip ring 54 is driven to reciprocate through the cooperation of the annular groove 55 and the sliding tongue. When the rotating shaft 21 rotates, the groove wall of the annular groove 55 pushes the sliding tongue, causing the slip ring 54 to reciprocate along the axial direction of the rotating shaft 21. When the slip ring 54 reciprocates, it drives the two sliders 51 to reciprocate synchronously through the two connecting rods 53. The two sliders 51 drive the two brushes 52 to reciprocate, thereby increasing the contact area between the brushes 52 and the measuring rope 23 and enhancing the cleaning effect of the brushes 52.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A blast hole drilling standard measuring device, characterized in that, Include: The shell (1); The measuring assembly (2) is arranged in the shell (1), the measuring assembly (2) includes rotating shaft (21), rotating shaft (21) is rotatably installed in the shell (1), the outer wall of rotating shaft (21) is connected with winding disc (22), the winding disc (22) is wound with measuring rope (23), one end of measuring rope (23) is connected with winding disc (22), the other end of measuring rope (23) is connected with thimble (24), the thimble (24) is rotatably connected with weight (25), the top of shell (1) is connected with nut block (210) through sliding, the screw rod (27) is rotatably installed in the shell (1), the outer wall of screw rod (27) is connected with second gear (29), the outer wall of rotating shaft (21) is connected with first gear (28), the top of nut block (210) is connected with first pointer (211), the top of shell (1) is installed with first scale plate (212), the first pointer (211) can display the length of measuring rope (23) pulled out on the first scale plate (212); The measuring assembly (2) further includes locking portion (3) for locking first gear (28) and second gear (29); The measuring assembly (2) further includes prompting portion (4) for prompting when the drilling depth is qualified; The prompting portion (4) includes disc (41), the disc (41) is installed on the shell (1), the inner side of disc (41) is rotatably installed with rotating rod (42), the two ends of rotating rod (42) are connected with first light pole (43) and second light pole (44) respectively, the disc (41) is provided with arc slot, the second light pole (44) penetrates the arc slot of disc (41), the nut block (210) is provided with sliding slot (412), the end of first light pole (43) away from rotating rod (42) is connected with sliding slot (412), the nut block (210) is moved and drives rotating rod (42) to rotate through the cooperation of sliding slot (412) and first light pole (43), the end of second light pole (44) away from rotating rod (42) is connected with paddle (46), the disc (41) is installed with arc guide rail (47), the arc guide rail (47) is connected with prompt bell (48) through sliding, the prompt bell (48) is installed with trigger piece (49), the trigger piece (49) is located on the movement track of paddle (46), the paddle (46) and trigger piece (49) contact and can trigger prompt bell (48) to ring; The end of second light pole (44) away from rotating rod (42) is connected with second pointer (45), the disc (41) is installed with second scale plate (411), the second pointer (45) can display the drilling depth on the second scale plate (411).

2. A blast hole drilling surveying apparatus according to claim 1 wherein: The screw rod (27) is in threaded connection with the nut block (210), the first gear (28) is in engagement with the second gear (29), the measuring rope (23) is driven to rotate the rotating shaft (21) by the winding disc (22) when the measuring rope (23) is pulled out, the rotating shaft (21) drives the screw rod (27) to rotate by the first gear (28) and the second gear (29) when the rotating shaft (21) rotates, and the screw rod (27) can drive the nut block (210) to move horizontally when the screw rod (27) rotates.

3. A blast hole drilling surveying apparatus according to claim 2, wherein: The rotating shaft (21) is connected with the rocker (26), and the rocker (26) is located outside the shell (1).

4. A blast hole drilling surveying apparatus according to claim 3 wherein: Two layer plates (11) are installed in the shell (1), a gap is formed between the two layer plates (11), the measuring rope (23) passes through the gap between the two layer plates (11), and a guide rod (213) is installed in the shell (1) and in contact with the measuring rope (23).

5. A borehole surveying apparatus according to claim 3, wherein: The locking part (3) comprises a handle (31) installed on the top of the shell (1), a sliding rod (32) slidably connected to the handle (31), two springs (33) connected between the sliding rod (32) and the handle (31), a groove block (34) connected to one end of the sliding rod (32) away from the handle (31), two locking rods (35) slidably connected to the side wall of the shell (1) and connected with a sliding shaft (36) between the two locking rods (35), the two locking rods (35) can lock the engagement position of the first gear (28) and the second gear (29), and the groove block (34) is provided with an inclined groove, the sliding shaft (36) is slidably connected with the inclined groove of the groove block (34), and the groove block (34) is driven to disengage the two locking rods (35) from the first gear (28) and the second gear (29) by cooperation of the inclined groove and the sliding shaft (36) when the groove block (34) moves upwards.

6. A blast hole drilling surveying apparatus as claimed in claim 1, wherein: The prompt bell (48) is threadedly connected with an adjusting wire (410), and the adjusting wire (410) is used for fixing the position of the prompt bell (48) on the arc-shaped guide rail (47).

7. A borehole surveying apparatus according to claim 4, wherein: The measuring assembly (2) further comprises a cleaning part (5), the cleaning part (5) comprises two sliding blocks (51) slidably connected to the two layer plates (11), the two sliding blocks (51) are located in the gap between the two layer plates (11), one side of each of the two sliding blocks (51) is connected with a brush (52), the two brushes (52) are in contact with the measuring rope (23), a connecting rod (53) is connected to each of the two sliding blocks (51), a sliding ring (54) is connected between the two connecting rods (53), an annular inclined groove (55) is formed in the rotating shaft (21), a sliding tongue is arranged on the inner wall of the sliding ring (54), the sliding tongue of the sliding ring (54) is slidably connected with the annular inclined groove (55), and the sliding ring (54) is driven to move back and forth by cooperation of the annular inclined groove (55) and the sliding tongue when the rotating shaft (21) rotates.

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