Bidirectional measuring rope

Abstract

The utility model relates to the technical field of depth measurement, and particularly discloses a bidirectional measuring rope which comprises a measuring rope body and lead weights, the lead weights are installed at the two ends of the measuring rope body respectively, identification pipes are fixed to the measuring rope body at intervals in the length direction of the measuring rope body, first scales and second scales are engraved on the identification pipes respectively, and the first scales and the second scales are arranged in a mirror symmetry mode. The first scale and the second scale respectively correspond to the length positions of the identification tubes on the measuring rope, the length positions respectively take the two end points of the measuring rope as zero points, and the sum of the first scale and the second scale is the total length of the measuring rope. According to the scheme, the problems that in traditional blast hole acceptance work, the time consumed by the manual rope winding procedure of acceptance personnel is long, the measuring error caused by bending of the measuring rope is large, and the service life is short can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of depth measurement, in particular to a bidirectional measuring rope. Background Art

[0002] Drilling is one of the five major processes in open-pit mining. Medium- and large-scale mines drill enormous quantities of holes daily, with over a thousand blastholes requiring inspection daily. During open-pit blasting operations, a drilling machine drills holes from the ground, then loads the holes with explosives for a series of blasting operations. The depth and water level of the holes directly affect the blasting effectiveness of the explosives. Therefore, inspection personnel must perform inspection measurements after drilling to verify that the designed hole depth and other parameters meet design requirements. Only when these meet these requirements can blasting be carried out.

[0003] Currently, drillhole depth measurement is typically performed manually using a handheld measuring rope. Specifically, this method utilizes a measuring rope combined with a plumb bob. The inspector holds one end of the measuring rope and drops the plumb bob into the borehole. The inspector then verifies the hole depth using a pre-determined standard measuring rope. However, these measuring ropes are typically one-way, requiring each borehole measurement to proceed through the process of setting out the line, taking readings, and then reeling it in. After setting out, the measuring rope, which can be tens or even dozens of meters long, must be manually pulled and reeled in. Traditional borehole inspections require reeling in each borehole before proceeding to the next, which accounts for nearly half of the inspection time. Given a human arm span of only 70 cm, even with arms extended to their full extent, reeling in the measuring rope can still require dozens of turns, requiring constant coordination. Our inspectors have measured that a skilled inspector takes approximately 34 seconds to measure each deep hole. Secondly, each time the borehole is inspected and reeled in, the measuring rope is bent thousands of times. This can lead to loosening, bending, localized diameter increases or decreases, and localized twisting of the wire rope, resulting in wavy deformation, large measurement errors, and a shortened service life. Therefore, a new measuring rope was proposed to address these issues. Utility Model Content

[0004] The utility model provides a bidirectional measuring rope to solve the problems in traditional blasthole acceptance work that the manual rope winding process of acceptance personnel is time-consuming, the bending of the measuring rope leads to large measurement errors and short service life.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is as follows: a bidirectional measuring rope, including a measuring rope and a plumb bob, the plumb bobs are respectively installed at both ends of the measuring rope, and marking tubes are fixed on the measuring rope at intervals along the length of the measuring rope, and each marking tube is engraved with a first scale and a second scale, and the first scale and the second scale are respectively arranged in a mirror-symmetrical manner. The first scale and the second scale respectively correspond to the length position of the marking tube on the measuring rope, and the length position takes the two end points of the measuring rope as zero points, and the sum of the first scale and the second scale is the total length of the measuring rope.

[0006] The basic principle of this solution is: one end of the measuring rope together with the lead sinker is dropped into the first borehole to be inspected. If the first scale is marked with the lead sinker at this end as the zero point, the acceptance personnel will read the reading through the first scale of the marking tube, record the depth of the first borehole after reading, and then drop the other end of the measuring rope together with the lead sinker into the second borehole to be inspected. The lead sinker in the first borehole is pulled up, and the staff can hold the lead sinker again. At this time, the second scale is marked with the lead sinker in the second borehole as the zero point, then the depth of the second borehole can be measured by reading the number marked on the second scale, and the lead sinker in the first borehole that has just been pulled up is dropped into the third borehole to be inspected again, and so on. The rope-collecting process in the traditional acceptance method is converted into the rope-releasing process for measuring the depth of the next borehole.

[0007] The beneficial effects of this program are:

[0008] 1. In traditional borehole inspection, each blasthole inspection requires the rope to be reeled in before the next blasthole inspection can proceed. This rope reeling takes up nearly half of the inspection time. Bidirectional measurement can avoid the need to reel in the rope for each blasthole, saving about 15 seconds per hole.

[0009] 2. Each time a blasthole is inspected and reeled in, the measuring wire is bent thousands of times. This can lead to loosening, bending, localized diameter increases or decreases, and localized twisting of the wire, resulting in wavy deformation. This can cause large measurement errors and shorten service life. Bidirectional measurement can limit the number of bends to approximately ten per day, significantly extending service life and reducing measurement errors.

[0010] 3. Traditional scales have small readings and a uniform appearance, making them difficult to read. Color-coded numbers allow for quick depth reading; the numbers are enlarged and aligned with the rope direction for easy viewing; and the mirrored scale reduces interference from other scales.

[0011] Furthermore, the first scale and the second scale are both set along the length direction of the measuring rope.

[0012] Furthermore, the first scale and the second scale are colored numbers.

[0013] Furthermore, the background color or scale color of the first scale is different from that of the second scale.

[0014] Furthermore, a guide rope ring is detachably mounted on the measuring rope. The guide rope ring is a circular spring buckle, and an outwardly extending pedal is fixed on the outside of the guide rope ring.

[0015] Furthermore, the inner diameter of the guide rope ring is smaller than the outer diameter of the lead sinker.

[0016] Furthermore, the lead weights are passed through the rings at both ends of the measuring rope.

[0017] Furthermore, lead sinkers can be detachably mounted on both ends of the measuring rope via spring buckles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of a portion of the marking tube in an embodiment of the present utility model;

[0020] Figure 3 for Figure 1 A magnified schematic diagram of part A;

[0021] Figure 4 for Figure 1 An enlarged schematic diagram of part B;

[0022] Figure 5 for Figure 1 Enlarged schematic diagram of part C. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The reference numerals in the drawings of the specification include: measuring rope 1, lead weight 2, first scale 3, second scale 4, marking tube 5, ring mouth 6, guide rope ring 7, pedal 8.

[0025] The embodiment is basically as shown in the attached Figure 1 To the attached Figure 5 As shown:

[0026] A bidirectional measuring rope comprises a measuring rope 1 and a plumb bob 2. The measuring rope 1 is a steel wire measuring rope 1 with loops 6 at each end, each of which is threaded with a plumb bob 2. Several removable and replaceable marking tubes 5 are fixed to the outer wall of the measuring rope 1 at intervals along its length. Each marking tube 5 is provided with a first scale 3 and a second scale 4. The first and second scales 3 and 4 are mirror-symmetrical, with the numbers oriented along the rope length. The sum of the first and second scales 3 and 4 on a single marking tube 5 represents the total rope length.

[0027] like Figures 2 to 5As shown, to increase the difference between the two scales and reduce interference from the other scale when reading, the first scale 3 uses a colored background, and the second scale 4 uses a white background. In this embodiment, a measuring rope 1 with a length of 15 meters is used as an example. The marking tubes 5 are respectively marked with "2 / 13", "5 / 10", "7 / 8", "8 / 7", "10 / 5", and "13 / 2".

[0028] Specifically, the marking tube 5 can be made of printed and cut paper, wrapped around and glued to the corresponding position of the measuring rope 1. The marking tube 5 can also be made of a cable management marking sleeve or a hanger size buckle. After forming a set of two, the scale is encapsulated with epoxy resin, and then coated with an anti-fouling coating. The marking tube 5 is fixed to the corresponding meter of measuring rope 1 with adhesive. If it needs to be replaced later, the adhesive is removed and cleaned, and a new set of marking tubes 5 is fixed.

[0029] In order to facilitate the storage of the measuring rope, a spring buckle is used at the ring mouth 6 to pass through the lead sinker 2. The spring buckle can be opened and closed by utilizing the snap-on function, and the lead sinker 2 can be separated from the measuring rope 1 when storage is required.

[0030] To reduce friction between the measuring rope 1 and the borehole opening, a guide ring 7 is attached to the measuring rope 1. A U-shaped, thin pedal 8 is welded to the outer circumference of the guide ring 7. To use, place the pedal 8 flat on the ground, extend the guide ring 7 over the borehole, and begin unwinding the rope. The guide ring 7 can be secured with a circular spring buckle, allowing the measuring rope 1 to be freely threaded through and out of the ring. The inner diameter of the guide ring 7 is smaller than the outer diameter of the lead weight 2. When one end of the measuring rope 1 is driven into the borehole by the lead weight 2, the other end of the lead weight 2 is retained by the guide ring 7, preventing the measuring rope 1 from falling into the borehole if not held securely during measurement.

[0031] The specific implementation process is as follows: hang the lead weights 2 on the two ends of the measuring rope 1 respectively, and start to put one end of the lead weight 2 into the drill hole. The lead weight 2 drives the measuring rope 1 to fall in the drill hole. At this time, the number of the first scale 3 is facing the acceptance personnel. The acceptance personnel reads the first scale 3 to record the drilling depth; then there is no need to manually retract the measuring rope 1 that has been lowered into the drill hole to the ground (traditional acceptance working method), and directly carry out the acceptance of the second drill hole. After directly putting the lead weight 2 at the other end of the measuring rope 1 into the second drill hole, use the gravity of the lead weight 2 to drive the measuring rope 1 to fall to the second drill hole. At the same time, the other end of the measuring rope 1 together with the number in the first drill hole The lead weight 2 in the hole automatically rises. The inspector grasps the rising lead weight 2. The second scale 4 in the second borehole now faces upward, facing the inspector. After reading the depth of the second borehole, the inspector pulls the lead weight 2 toward the third borehole, lowers the rope into the hole, and reads the depth. This completes the depth measurement of the third borehole. Meanwhile, the lead weight 2 in the second borehole rises and is held in the inspector's hand. The inspector then pulls the measuring rope 1 toward the fourth borehole. This reduces the time it takes to gather the rope, transforming the traditional rope gathering process into a rope-releasing process. This eliminates the need for rope gathering for each blasthole, saving approximately 15 seconds per hole. Bidirectional measurement reduces the number of bends per day to approximately ten, significantly extending service life and minimizing measurement errors.

[0032] To further protect the measuring rope 1, the measuring rope 1 can be passed through the guide rope ring 7. The acceptance personnel will place the pedal 8 flat on the ground next to the hole of the drill hole, step on the pedal 8 with their feet, and then put the lead weight 2 into the drill hole. That is, before putting the rope each time, the measuring rope 1 is pulled and the guide rope ring 7 is taken away and placed at the next hole of the drill hole.

[0033] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bidirectional measuring rope, comprising a measuring rope and a lead sinker, characterized in that: The lead sinkers are installed at both ends of the measuring rope, and marking tubes are fixed on the measuring rope at intervals along the length of the measuring rope. Each marking tube is engraved with a first scale and a second scale. The first scale and the second scale are arranged in a mirror-symmetrical manner. The first scale and the second scale correspond to the length position of the marking tube on the measuring rope, respectively. The length position takes the two end points of the measuring rope as zero points, and the sum of the first scale and the second scale is the total length of the measuring rope.

2. A bidirectional measuring rope according to claim 1, characterized in that: The first scale and the second scale are both arranged along the length direction of the measuring rope.

3. A bidirectional measuring rope according to claim 2, characterized in that: The first scale and the second scale are colored numbers.

4. A bidirectional measuring rope according to claim 3, characterized in that: The background color or scale color of the first scale is different from that of the second scale.

5. The bidirectional measuring rope according to claim 4, characterized in that: A guide rope ring is detachably mounted on the measuring rope. The guide rope ring is a circular spring buckle. A pedal extending outward is fixed on the outer side of the guide rope ring.

6. The bidirectional measuring rope according to claim 5, characterized in that: The inner diameter of the guide rope ring is smaller than the outer diameter of the lead sinker.

7. The bidirectional measuring rope according to claim 6, characterized in that: Lead weights are passed through the rings at both ends of the measuring rope.

8. The bidirectional measuring rope according to claim 7, characterized in that: Lead sinkers are detachably mounted on both ends of the measuring rope via spring buckles.

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