Simple goaf scanning device

Abstract

The utility model discloses a simple scanning device for a goaf, which comprises a tripod at the bottom, a rotatable turntable arranged on the tripod, a metal rod connected on the turntable, a three-dimensional laser scanner arranged at the end part of the metal rod, an internal thread arranged at the tail end of the metal rod, an external thread arranged at the head end of the metal rod, and two sections of metal rods in threaded connection end to end, and the outer walls of the two connected sections of metal rods are flush with each other. According to the goaf scanning device provided by the utility model, the multiple sections of metal rods are connected to form a telescopic effect, so that scanning operators are far away from the goaf opening, the risk that the operators fall into the goaf is avoided, meanwhile, the operators do not need to directly hold the metal rods into the goaf, and the three-dimensional laser scanner is easier and smoother to move and operate in all directions; the length of the scanner extending into the goaf is increased, and the scanning rate of the goaf opening inner wall is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering surveying, and specifically relates to a simple scanning device for goaf areas. Background Technology

[0002] Currently, scanning of goaf areas mainly involves using a metal rod paired with a 3D laser scanner. One person can view the scanning data in real time via a tablet or mobile phone, while two people operate the scanner to extend it into the goaf area. The distance into the goaf area is limited, and the scanner needs to be moved up, down, left, and right with the cooperation of two people. The movement space is limited and laborious. At the same time, the risk of falling is high due to the close proximity to the goaf area.

[0003] Scanning a small portion of the airspace is done using drones equipped with 3D laser scanners. This requires a drone pilot's license and insurance. There are also risks of signal transmission interruption due to the control panel or drone obstructing the signal transmission, as well as other malfunctions, which could cause the drone to fall into the airspace. Utility Model Content

[0004] This utility model provides a simple scanning device for goaf areas, which increases the distance between operators and the goaf area, avoiding the safety risk of personnel falling.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0006] A simple scanning device for goaf areas includes a tripod at the bottom, a rotatable turntable on the tripod, a metal rod connected to the turntable, and a 3D laser scanner at the end of the metal rod. The metal rod has an internal thread at the tail end and an external thread at the head end. The two metal rod sections can be threaded together, and the outer walls of the two metal rod sections are flush after being connected.

[0007] Further technology of this utility model:

[0008] Preferably, the turntable is provided with a sleeve, and the metal rod is connected to the turntable through the sleeve.

[0009] Preferably, the sleeve includes a lower semi-cylindrical steel pipe fixedly connected to the turntable, an upper semi-cylindrical steel pipe hinged to the lower semi-cylindrical steel pipe, and the lower and upper semi-cylindrical steel pipes together surround the outer wall of the metal rod.

[0010] Preferably, the inner wall of the lower semi-cylindrical steel pipe is provided with a groove, and a roller is provided in the groove.

[0011] Preferably, the outer wall of the metal rod contacts the roller, and a gap is left between it and the inner wall of the upper semi-cylindrical steel pipe.

[0012] Preferably, the slot and roller are arranged along the length of the lower semi-cylindrical steel pipe, and the outer wall of the metal rod is provided with a groove along the length of the metal rod. The metal rod moves forward and backward, and the roller moves in the groove.

[0013] The beneficial effects of this utility model are:

[0014] The scanning device for goaf provided by this utility model uses multiple metal rods connected together to form a telescopic effect, allowing scanning operators to stay away from the goaf entrance and avoiding the risk of personnel falling into the goaf. At the same time, it eliminates the need for personnel to directly hold the metal rods and reach into the goaf, making the movement of the 3D laser scanner in all directions easier and smoother, increasing the length of the scanner that can reach into the goaf, and improving the scanning rate of the inner wall of the goaf entrance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a simplified scanning device for goaf areas.

[0017] Figure 2 This is a schematic diagram of the tripod structure;

[0018] Figure 3 Schematic diagram of the connection structure between the turntable and the sleeve. Figure 1 ;

[0019] Figure 4 Schematic diagram of the connection structure between the turntable and the sleeve. Figure 2 ;

[0020] Figure 5 This is a schematic diagram of the cross-section connecting the metal rod and the sleeve.

[0021] In the diagram: 10. Tripod; 11. Turntable; 12. Metal rod; 13. 3D laser scanner; 14. Sleeve; 141. Lower semi-cylindrical steel pipe; 142. Upper semi-cylindrical steel pipe; 15. First bolt; 16. Hinge; 17. Second bolt; 18. Groove; 19. Roller; 20. Recess. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] This embodiment provides a simple scanning device for goaf areas, such as... Figure 1-5 The device includes a tripod 10 at the bottom, a rotatable turntable 11 on the tripod 10, a metal rod 12 connected to the turntable 11, a 3D laser scanner 13 at the end of the metal rod 12, the metal rod 12 has an internal thread at the tail end and an external thread at the head end, the two metal rods 12 can be threaded together, and the outer walls of the two metal rods 12 are flush after being connected.

[0024] The turntable 11 is provided with a sleeve 14, which is made into a rotating shaft by the first bolt 15. The sleeve 14 is controlled to swing up and down, and the metal rod 12 is connected to the turntable 11 through the sleeve 14.

[0025] The sleeve 14 includes a lower semi-cylindrical steel pipe 141 fixedly connected to the turntable 11. The lower semi-cylindrical steel pipe 141 is hinged to an upper semi-cylindrical steel pipe 142 via a hinge 16. The lower semi-cylindrical steel pipe 141 and the upper semi-cylindrical steel pipe 142 are wrapped around the outer wall of the metal rod 12 by a second bolt 17.

[0026] It should be noted that the number of metal rods 12 can be selected according to actual needs. In this embodiment, three metal rods 12 are selected, and the two adjacent metal rods 12 are connected end to end.

[0027] Before starting the operation, prepare a tripod 10, a metal rod 12, and a 3D laser scanner 13. Set up the tripod 10 about 3 meters away from the goaf entrance. Place the device on top of the tripod 10 and install it. Fit the metal rod 12 onto the device. Operators operate from behind the tripod 10. After the metal rod 12 is fitted into the device and locked, press the 3D laser scanner 13 onto the front end of the metal rod 12. Connect the metal rod 12 section by section and slowly extend it forward. Control the scanner's forward and backward movement by extending and retracting the metal rod 12. Control the movement of the 3D laser scanner 13 in all directions by pushing it up, down, left, and right from behind the metal rod 12 until the goaf scanning is completed.

[0028] Since the outer wall of the metal rod 12 and the inner wall of the sleeve 14 are smooth arc surfaces, the metal rod 12 may rotate inside the sleeve 14 when the extension and retraction of the metal rod 12 are controlled. This may cause the three-dimensional laser scanner 13 at the front end of the metal rod 12 to shift and jitter, affecting the scanning accuracy. Therefore, this embodiment improves the offset jitter problem.

[0029] Specifically, the inner wall of the lower semi-cylindrical steel pipe 141 is provided with a groove 18, and a roller 19 is provided in the groove 18.

[0030] The outer wall of the metal rod 12 contacts the roller 19, and a gap is left between it and the inner wall of the upper semi-cylindrical steel pipe 142.

[0031] The slot 18 and roller 19 are arranged along the length of the lower semi-cylindrical steel pipe 141. The outer wall of the metal rod 12 is provided with a groove 20 along the length of the metal rod 12. The metal rod 12 moves forward and backward, and the roller 19 moves in the groove 20.

[0032] The metal rod 12 has an internal thread at the tail end and an external thread at the head end. The two metal rods 12 can be threaded together, and the outer walls of the two metal rods 12 are flush after being connected.

[0033] In the above structure, the width of the roller 19 is similar to the width of the groove 20. The roller 19 should not wobble within the groove 20. During the movement of the metal rod 12 along the smooth sleeve 14, the roller 19 and the groove 20 work together to control the metal rod 12 to move only forward and backward without any deviation or rotation. It should also be noted that the roller 19 in this embodiment is a rubber roller to reduce shaking during rolling.

[0034] More importantly, the groove 20 acts as a reinforcing rib, which can enhance the strength of the metal rod 12.

[0035] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A simple scanning device for goaf areas, characterized in that: The device includes a tripod at the bottom, a rotatable turntable on the tripod, and a metal rod connected to the turntable. A 3D laser scanner is mounted at the end of the metal rod. The tail end of the metal rod has an internal thread, and the head end has an external thread. The two metal rod sections can be threaded together, and the outer walls of the two metal rod sections are flush after being connected.

2. A simplified scanning device for goaf areas according to claim 1, characterized in that, The turntable is equipped with a sleeve, and the metal rod is connected to the turntable through the sleeve.

3. A simplified scanning device for goaf areas according to claim 2, characterized in that, The sleeve includes a lower semi-cylindrical steel pipe fixedly connected to the turntable, and an upper semi-cylindrical steel pipe is hinged to the lower semi-cylindrical steel pipe. The lower semi-cylindrical steel pipe and the upper semi-cylindrical steel pipe together surround and wrap around the outer wall of the metal rod.

4. A simplified scanning device for goaf areas according to claim 3, characterized in that, The lower semi-cylindrical steel pipe has a groove on its inner wall, and a roller is installed in the groove.

5. A simplified scanning device for goaf areas according to claim 4, characterized in that, The outer wall of the metal rod contacts the roller, and a gap is left between it and the inner wall of the upper semi-cylindrical steel pipe.

6. A simplified scanning device for goaf areas according to claim 4, characterized in that, The slot and roller are arranged along the length of the lower semi-cylindrical steel pipe, and the outer wall of the metal rod is provided with a groove along the length of the metal rod. The metal rod moves forward and backward, and the roller moves in the groove.

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