Mine underground rock sampling equipment and method

Abstract

The invention provides mine underground rock sampling equipment and method, and relates to the technical field of mine equipment.The mine underground rock sampling equipment comprises a sampling arm, a sampling device is arranged on the outer side of the sampling arm, a mounting platform is further arranged at the lower end of the sampling arm, and a first deflection device is arranged at the upper end of the mounting platform; a second deflection device is fixed at the upper end of the first deflection device, a mounting opening allowing the sampling arm to penetrate through is formed in the second deflection device, the mounting platform is controlled by the second deflection device to deflect around a first axis, and the mounting platform is controlled by the first deflection device to deflect around a second axis; the first axis intersects with the second axis; the sampling device is mounted on the outer side of the mounting platform, and a telescopic device is arranged between the sampling device and the mounting platform. Triangular gaps existing in the sampling process are eliminated, and the rock collecting efficiency and completeness are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mining equipment, and in particular to a rock sampling device and method for underground mines. Background Art

[0002] Cutting and impacting the inner wall of the underground tunnel through ore sampling equipment can achieve automatic sampling of rocks at predetermined positions, which can replace the traditional manual grooving sampling process, and the sampling efficiency and sampling range are greatly improved.

[0003] By installing a sampling bag at the end of the sampling robot arm, the fallen rocks can be automatically collected, avoiding the subsequent manual collection process, further improving the efficiency of rock sampling and ensuring the accuracy of sampling; however, the traditional sampling bag is fixed on the outside of the robot arm or installed on the lower front side of the robot arm. When there is a certain inclination angle between the robot arm and the tunnel wall, the sampling bag cannot be completely fitted between the wall, causing some rocks to fall from the gap, making it impossible to collect the rocks completely and automatically, affecting the normal sampling and collection of rocks. Summary of the invention

[0004] In view of the above problems, the present invention provides an underground rock sampling device and method for a mine, which eliminates the triangular gap existing in the sampling process and greatly improves the efficiency and integrity of rock collection.

[0005] To solve the above problems, the technical solution adopted by the present invention is: A rock sampling device for underground mines comprises a sampling arm, a sampling device is arranged on the outside of the sampling arm, a mounting platform is arranged at the lower end of the sampling arm, a first deflection device is arranged at the upper end of the mounting platform, a second deflection device is fixed at the upper end of the first deflection device, a mounting opening for the sampling arm to pass through is opened inside the second deflection device, wherein the mounting platform is controlled to deflect around a first axis by the second deflection device, and the mounting platform is controlled to deflect around a second axis by the first deflection device, and the first axis intersects with the second axis; the sampling device is installed on the outside of the mounting platform, a telescopic device is arranged between the sampling device and the mounting platform, and the horizontal position between the sampling device and the sampling arm and the size of the bag opening at the upper end of the sampling device are controlled by the telescopic device; two distance detection devices are arranged on the side of the telescopic device away from the mounting platform, and the distance between the left and right ends of the sampling device and a predetermined position is measured by the distance detection device and a control signal is formed, and the control signal is transmitted to the first deflection device to control the deflection angle of the mounting platform around the second axis.

[0006] Preferably, the second deflection device comprises a deflection base, a deflection ring is rotatably connected inside the deflection base, the deflection ring is fixedly connected to the outer wall of the sampling arm, and a second electric control device for controlling the deflection of the deflection ring is fixed to the side wall of the deflection base.

[0007] Preferably, the first deflection device comprises a deflection platform, the deflection platform is rotatably connected to the mounting platform, the second deflection device is fixedly connected to the upper end of the deflection platform, and a first electric control device for controlling the deflection of the deflection platform is provided on a side wall of the mounting platform.

[0008] Preferably, the sampling device includes a sampling bag, and a second fixing plate and a first fixing plate are respectively fixed on both sides of the bag opening of the sampling bag, and the first fixing plate is located between the second fixing plate and the mounting platform. The horizontal position of the sampling device is controlled by controlling the position between the first fixing plate and the second fixing plate and the mounting platform, and the opening size of the bag opening at the upper end of the sampling bag is controlled by controlling the distance between the first fixing plate and the second fixing plate.

[0009] Preferably, the telescopic device includes a second telescopic rod and a first telescopic rod, the telescopic ends of the second telescopic rod and the first telescopic rod are fixedly connected to the second fixed plate, the telescopic end of the first telescopic rod passes through the first fixed plate and is slidably connected thereto, and the base end of the second telescopic rod is fixedly connected to the first fixed plate.

[0010] Preferably, the base end of the second telescopic rod is connected to the base end of the first telescopic rod through a delivery pipe, the base end of the first telescopic rod is connected to a liquid inlet joint, the first telescopic rod and the second telescopic rod are both elastic telescopic rods, and the contraction elasticity of the second telescopic rod is greater than the contraction elasticity of the first telescopic rod.

[0011] Preferably, a receiving groove for accommodating the distance detecting device is formed at the telescopic end of the first telescopic rod, and a sealing piston is arranged inside the base end of the first telescopic rod, and the sealing piston separates the base end of the first telescopic rod into a first control chamber and a second control chamber, and the first control chamber is located on the side close to the sampling device, and an elastic air bag is installed inside the first control chamber, and the elastic air bag is connected to a pump air pipe with two built-in one-way valves, and the first pump air pipe is connected to the receiving groove.

[0012] Preferably, the distance detecting device comprises a distance detecting component and an impeller, the impeller is rotatably connected to the inner wall of the accommodating groove, the distance detecting component and the impeller are connected via a connecting workpiece and the distance detecting component is eccentrically arranged relative to the impeller.

[0013] Preferably, a slanted material guide plate is fixed to the upper end of the second fixing plate, a blocking rod arranged toward the first fixing plate is fixed to the side wall of the second fixing plate, and a side opening adapted to the blocking rod is opened on the side wall of the first fixing plate.

[0014] A method for sampling rock underground in a mine, using the above-mentioned underground rock sampling equipment, comprises the following steps: S1, determining a predetermined position of the sampling rock, and driving the underground rock sampling equipment to move to the outside of the predetermined position; S2, driving the sampling arm toward the predetermined position, and then measuring the distance between the left and right ends of the sampling device and the predetermined position by two distance detection devices; S3, forming a control signal according to the distance between the left and right ends of the sampling device and the predetermined position, and transmitting the control signal to the first deflection device to control the deflection angle of the mounting platform around the second axis.

[0015] The beneficial effects of the present invention are: Compared with the prior art, through the above-mentioned structural design, the circumferential deflection angle of the mounting platform can be controlled by the second deflection device, so that the sampling device is constantly located under the sampling arm, ensuring that the sampling device is in a stable state to collect rocks; at the same time, the horizontal deflection angle of the mounting platform can be adjusted by the first deflection device, and during the deflection of the mounting platform, the sampling device can be parallel to the wall surface, eliminating the existing triangular gap, thereby greatly improving the efficiency and integrity of rock collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 For the present invention Figure 1 Schematic diagram of the top view structure.

[0018] Figure 3 For the present invention Figure 1 Schematic diagram of the main structure.

[0019] Figure 4 For the present invention Figure 1 Schematic diagram of the side structure.

[0020] Figure 5 For the present invention Figure 4 A is an enlarged structural diagram of FIG.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the telescopic device of the present invention.

[0022] Figure 7 For the present invention Figure 6 Schematic diagram of the top view structure.

[0023] Figure 8This is a schematic diagram of the changing state of the sampling bag of the present invention.

[0024] In the figure: 100, sampling device; 110, first fixed plate; 111, side opening; 120, second fixed plate; 121, guide plate; 122, blocking rod; 130, sampling bag; 200, first telescopic rod; 210, liquid inlet joint; 300, second telescopic rod; 310, fixer; 320, conveying pipeline; 400, mounting platform; 500, first deflection device; 510, deflection platform; 520, first electric control device; 600, second deflection device; 610, deflection base; 620, deflection ring; 630, second electric control device; 700, distance detection device; 710, impeller; 720, distance detection component; 800, sampling arm; 810, sampling base; 820, sampling end. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] In order to solve the problems existing in the background technology, Figure 1 -Attached Figure 8 A rock sampling device for underground mines includes a sampling arm 800. A sampling device 100 is arranged on the outside of the sampling arm 800. The sampling arm 800 includes a sampling base 810 and a sampling end 820. The sampling end 820 here can select the impact structure shown in the accompanying drawings, or can select a cutting structure. The sampling end 820 can apply force to the rock at a predetermined position to accelerate its detachment from the wall surface. The detached rock falls into the sampling device 100 for centralized collection.

[0027] Furthermore, a mounting platform 400 is provided at the lower end of the sampling arm 800, a first deflection device 500 is provided at the upper end of the mounting platform 400, a second deflection device 600 is fixed to the upper end of the first deflection device 500, and a mounting opening is opened inside the second deflection device 600 for the sampling arm 800 to pass through, wherein the mounting platform 400 is controlled to deflect around a first axis by the second deflection device 600, and the mounting platform 400 is controlled to deflect around a second axis by the first deflection device 500, and the first axis intersects with the second axis; the above-mentioned first axis can be selected as a line extending along the length direction of the sampling arm 800, and the second axis can be perpendicular to the horizontal plane where the first axis is located.

[0028] When the sampling arm 800 remains relatively unchanged, the second deflection device 600 can be used to control the mounting platform 400 to deflect around the sampling arm 800 to ensure that the mounting platform 400 is normally located directly below the sampling arm 800, ensuring that the force on the rock in the sampling device 100 is uniform, while also ensuring that the bag opening of the sampling device 100 faces upward to prevent rock leakage; the first deflection device 500 can be used to control the mounting platform 400 to deflect toward a predetermined angle under the sampling arm 800. Through the above structure, the deflection angle of the sampling device 100 can be adjusted according to the inclination of the wall at the predetermined position, so as to control the sampling device 100 to fit closely with the wall at the predetermined position and avoid the existence of a triangular gap.

[0029] Specifically, the sampling device 100 is installed on the outside of the mounting platform 400, and a telescopic device is provided between the sampling device 100 and the mounting platform 400, through which the horizontal position between the sampling device 100 and the sampling arm 800 and the size of the opening of the bag at the upper end of the sampling device 100 are controlled; after the deflection angle of the mounting platform 400 is determined, the sampling device 100 is controlled to extend toward a predetermined position through the telescopic device, so that the outer side of the sampling device 100 is pressed against the wall surface, and after the outer side of the sampling device 100 is pressed against the wall surface, the bag opening of the sampling device 100 is controlled to open to form a bag opening of a predetermined size, and the rock falls into the sampling device 100 under the action of gravity to achieve automatic collection.

[0030] In addition, two distance detection devices 700 are installed on the side of the telescopic device away from the mounting platform 400. The distance detection device 700 measures the distance between the left and right ends of the sampling device 100 and the predetermined position and forms a control signal, and transmits the control signal to the first deflection device 500 to control the deflection angle of the mounting platform 400 around the second axis. The mounting platform 400 can be controlled to deflect in the first direction or in the second direction to eliminate the triangular gap on the left or right side.

[0031] It should be noted here that the two distance detection devices 700 are respectively located on both sides. A single distance detection device 700 can individually measure the distance between the sampling device 100 on that side and the wall. The distances detected by the two distance detection devices 700 are the same, which means that the sampling device 100 and the wall are in a relatively parallel state, and the triangular gap is in a disappearing or minimum state.

[0032] The control signal is transmitted to the first deflection device 500 through the detection device. The first deflection device 500 can adjust the deflection angle of the installation platform 400 on the horizontal plane. The first deflection device 500 controls the installation platform 400 to rotate and drives the sampling device 100 to deflect by a predetermined angle, controls the sampling device 100 to be parallel to the wall surface, eliminates the existing gap, and prevents rocks from scattering from the triangular gap, thereby ensuring that the rocks are collected in a concentrated manner and improving the efficiency and completeness of rock collection.

[0033] In summary, through the above structural design, the second deflection device 600 can control the circumferential deflection angle of the mounting platform 400, so that the sampling device 100 is constantly located below the sampling arm 800, ensuring that the sampling device 100 is in a stable state to collect rocks; at the same time, the first deflection device 500 can adjust the horizontal deflection angle of the mounting platform 400, and during the deflection of the mounting platform 400, the sampling device 100 can be parallel to the wall surface, eliminating the existing triangular gap, thereby greatly improving the efficiency and integrity of rock collection.

[0034] Specifically, the second deflection device 600 includes a deflection base 610, a deflection ring 620 is rotatably connected inside the deflection base 610, the deflection ring 620 is fixedly connected to the outer wall of the sampling arm 800, and a second electric control device 630 for controlling the deflection of the deflection ring 620 is fixed to the side wall of the deflection base 610; the second electric control device 630 can control the relative rotation between the deflection ring 620 and the deflection base 610, and when the position of the sampling arm 800 remains relatively unchanged, the mounting platform 400 here deflects in the opposite direction, thereby adjusting the sampling device 100 to be in a predetermined position below.

[0035] Specifically, the first deflection device 500 includes a deflection platform 510, which is rotatably connected to the mounting platform 400, and the second deflection device 600 is fixedly connected to the upper end of the deflection platform 510. The side wall of the mounting platform 400 is provided with a first electric control device 520 for controlling the deflection of the deflection platform 510; similarly, when the position of the sampling arm 800 remains unchanged, the relative deflection between the deflection platform 510 and the mounting platform 400 can be controlled by the first electric control device 520, and the mounting platform 400 deflects in the opposite direction at this time, so as to adjust the position of the sampling device 100.

[0036] The first electronic control device 520 and the second electronic control device 630 can select a combination of existing motors, gears, and gear ring groups to achieve stable control of deflection adjustment.

[0037] Specifically, the sampling device 100 includes a sampling bag 130, through which rocks can be collected, and a bag opening for rocks to enter is arranged at the upper end of the sampling bag 130; a second fixing plate 120 and a first fixing plate 110 are respectively fixed on both sides of the bag opening of the sampling bag 130, and the first fixing plate 110 is located between the second fixing plate 120 and the mounting platform 400. The horizontal position of the sampling device 100 is controlled by controlling the position between the first fixing plate 110 and the second fixing plate 120 and the mounting platform 400, and the opening size of the bag opening at the upper end of the sampling bag 130 is controlled by controlling the distance between the first fixing plate 110 and the second fixing plate 120.

[0038] By setting the first fixing plate 110 and the second fixing plate 120, the bag opening at the upper end of the sampling bag 130 can be supported and limited, forming a rectangular stable structure at the upper end of the sampling bag 130 for rocks to enter; the second fixing plate 120 and the first fixing plate 110 here can be selected as metal hard materials, and the sampling bag 130 here can be selected as wear-resistant and pressure-resistant woven material.

[0039] Specifically; the telescopic device includes a second telescopic rod 300 and a first telescopic rod 200, the telescopic ends of the second telescopic rod 300 and the first telescopic rod 200 are fixedly connected to the second fixed plate 120, the telescopic end of the first telescopic rod 200 passes through the first fixed plate 110 and is slidably connected thereto, and the base end of the second telescopic rod 300 is fixedly connected to the first fixed plate 110.

[0040] During the control process, the first telescopic rod 200 is first controlled to push the first fixed plate 110 and the second fixed plate 120 to extend outward, so that the second fixed plate 120 can be pressed against the wall surface at a predetermined position. After the second fixed plate 120 is pressed against the wall surface, the second telescopic rod 300 is controlled to extend, so that the base end of the second telescopic rod 300 is fixed to the first fixed plate 110. During the extension of the second telescopic rod 300, the base of the second telescopic rod 300 can move with the first fixed plate 110 in a direction away from the second fixed plate 120 to open the bag mouth.

[0041] Through the above-mentioned structural design, the sampling device 100 can be pushed to move to the predetermined position before the bag mouth is opened, thereby ensuring the accuracy and stability of the second fixed plate 120 in the tight position; at the same time, after the second fixed plate 120 is tight and stable, the bag mouth is opened, and the sampling bag 130 can form an accurate bag mouth below the predetermined position, which is convenient for the subsequent collection of rocks; the above-mentioned control method is simple and efficient and can realize the rapid collection of rocks.

[0042] Furthermore, the base end of the second telescopic rod 300 is connected to the base end of the first telescopic rod 200 through a conveying pipe 320, the base end of the first telescopic rod 200 is connected to a liquid inlet joint 210, the first telescopic rod 200 and the second telescopic rod 300 are both elastic telescopic rods, and the contraction elasticity of the second telescopic rod 300 is greater than the contraction elasticity of the first telescopic rod 200.

[0043] During the control process, liquid is pumped into the liquid inlet connector 210 through a single liquid pumping device. Since the contraction elasticity of the second telescopic rod 300 is greater than the contraction elasticity of the first telescopic rod 200, in the process of controlling the entry of oil, the first telescopic rod 200 is first controlled to extend and the sampling device 100 is controlled to move to a predetermined position; then the second telescopic rod 300 is controlled to extend to open the bag opening at the upper end of the sampling bag 130.

[0044] Through the above method, the automatic adjustment of the position of the sampling bag 130 and the automatic opening control of the bag mouth can be achieved through a single pumping device; the control process of the first telescopic rod 200 and the second telescopic rod 300 is further simplified, and the efficiency of rock sampling is improved.

[0045] A receiving groove for receiving the distance detecting device 700 is provided at the telescopic end of the first telescopic rod 200, and a sealing piston is arranged inside the base end of the first telescopic rod 200, which separates the base end of the first telescopic rod 200 into a first control chamber and a second control chamber. The second control chamber is connected to the liquid inlet joint 210, and the first control chamber is located on the side close to the sampling device 100. An elastic air bag is installed inside the first control chamber, and the elastic air bag is connected to two pump air pipes with built-in one-way valves, and the first pump air pipe is connected to the receiving groove.

[0046] The distance detecting device 700 here is installed in a built-in manner in the receiving groove, thereby avoiding damage to the distance detecting device 700 during the process of the second fixing plate 120 being pressed against the wall; at the same time, during the process of the first telescopic rod 200 being extended, the first sealing piston moves toward the wall, and in this process, the elastic airbag can be squeezed, and the gas in the elastic airbag can be pumped out into the receiving groove through the first pump air pipe, which can blow out the impurities remaining in the receiving groove and clean the surface of the distance detecting device 700 to avoid affecting the normal distance measurement of the distance detecting device 700.

[0047] The above-mentioned distance detection device 700 can be selected as an existing laser distance measuring element, which can emit a distance measuring laser toward the wall to determine the distance between the distance detection device 700 and the wall at a predetermined position.

[0048] Furthermore, the distance detection device 700 includes a distance detection component 720 and an impeller 710 , the impeller 710 is rotatably connected to the inner wall of the accommodating groove, the distance detection component 720 and the impeller 710 are connected by a connecting workpiece and the distance detection component 720 is eccentrically arranged relative to the impeller 710 .

[0049] In the process of airflow blowing from the inside to the outside, the impeller 710 can be driven to rotate in a directional manner. In the process of rotation of the impeller 710, the connected distance detection component 720 can be driven to rotate synchronously. A small-sized cleaning pad can be installed on the rotation path of the distance detection component 720, which can efficiently clean the surface of the distance detection component 720 and improve the cleaning effect. It is particularly suitable for humid and dusty sampling environments underground.

[0050] At the same time, the distance detection component 720 here can be selected to be eccentrically arranged. During the rotation process, the distance detection component 720 can measure the distance at different positions on the wall surface, and can average and summarize the distance measurement results. During the rotation of the distance detection component 720, the measurement value range can also be improved, avoiding measurement deviations caused by local depressions on the wall surface, and can timely adjust the deflection position of the installation platform 400.

[0051] An inclined material guide plate 121 is fixed to the upper end of the second fixed plate 120. The material guide plate 121 can form a material guide structure at the upper end of the second fixed plate 120 to guide the rock and further reduce the gap.

[0052] A blocking rod 122 is fixed on the side wall of the second fixing plate 120 and is arranged toward the first fixing plate 110. A side opening 111 adapted to the blocking rod 122 is opened on the side wall of the first fixing plate 110. The blocking rod 122 here can be set to be a plurality of spacingly arranged ones. It is located at the bag mouth and can slow down the falling rocks, reducing the impact of the rocks falling directly into the sampling device 100 on the bottom of the bag mouth, thereby ensuring the overall integrity of the sampling device 100 and avoiding accidents in rock sampling.

[0053] The present invention is further described below in conjunction with the sampling method.

[0054] A method for sampling rock underground in a mine, using the above-mentioned underground rock sampling equipment, comprises the following steps: S1. Determine a predetermined location for sampling rock, and drive the underground rock sampling equipment of the mine to move to the outside of the predetermined location. The sampling equipment can be an automated sampling vehicle that can move in the tunnel.

[0055] S2, driving the sampling arm 800 toward a predetermined position, and then measuring the distance between the left and right ends of the sampling device 100 and the predetermined position through two distance detection devices 700.

[0056] S3. A control signal is generated according to the distance between the left and right ends of the sampling device 100 and the predetermined position, and the control signal is transmitted to the first deflection device 500 to control the deflection angle of the mounting platform 400 around the second axis.

[0057] Attach Figure 2 For example, when the distance between the lower end of the sampling device 100 and the wall is greater than the distance between the upper end of the sampling device 100 and the wall, the mounting platform 400 is controlled to deflect clockwise until the outer side of the sampling device 100 is parallel to the wall.

[0058] When the distance between the lower end of the sampling device 100 and the wall is smaller than the distance between the upper end of the sampling device 100 and the wall, the mounting platform 400 is controlled to deflect counterclockwise as a whole until the outer side of the sampling device 100 is parallel to the wall.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rock sampling device for underground mines, comprising a sampling arm (800), wherein a sampling device (100) is arranged outside the sampling arm (800), characterized in that: A mounting platform (400) is further provided at the lower end of the sampling arm (800), a first deflection device (500) is provided at the upper end of the mounting platform (400), a second deflection device (600) is fixed to the upper end of the first deflection device (500), and a mounting opening is provided inside the second deflection device (600) for the sampling arm (800) to pass through, wherein the mounting platform (400) is controlled to deflect around a first axis by the second deflection device (600), and the mounting platform (400) is controlled to deflect around a second axis by the first deflection device (500), and the first axis intersects with the second axis; The sampling device (100) is installed outside the installation platform (400), and a telescopic device is provided between the sampling device (100) and the installation platform (400), and the horizontal position between the sampling device (100) and the sampling arm (800) and the size of the opening of the bag at the upper end of the sampling device (100) are controlled by the telescopic device; Two distance detection devices (700) are installed on a side of the telescopic device away from the installation platform (400), and the distances between the left and right ends of the sampling device (100) and a predetermined position are measured by the distance detection devices (700) to form a control signal, and the control signal is transmitted to the first deflection device (500) to control the deflection angle of the installation platform (400) around the second axis.

2. The underground rock sampling equipment of claim 1, characterized in that: The second deflection device (600) comprises a deflection base (610), a deflection ring (620) being rotatably connected inside the deflection base (610), the deflection ring (620) being fixedly connected to the outer wall of the sampling arm (800), and a second electric control device (630) for controlling the deflection of the deflection ring (620) being fixedly connected to the side wall of the deflection base (610).

3. The underground rock sampling equipment of claim 1, characterized in that: The first deflection device (500) comprises a deflection platform (510), the deflection platform (510) being rotatably connected to the mounting platform (400), the second deflection device (600) being fixedly connected to the upper end of the deflection platform (510), and a first electric control device (520) for controlling the deflection of the deflection platform (510) being provided on a side wall of the mounting platform (400).

4. The underground rock sampling equipment of claim 1, characterized in that: The sampling device (100) comprises a sampling bag (130), wherein a second fixing plate (120) and a first fixing plate (110) are fixed on both sides of a bag opening of the sampling bag (130), respectively; the first fixing plate (110) is located between the second fixing plate (120) and the mounting platform (400); the horizontal position of the sampling device (100) is controlled by controlling the position between the first fixing plate (110) and the second fixing plate (120) and the mounting platform (400); and the opening size of the bag opening at the upper end of the sampling bag (130) is controlled by controlling the distance between the first fixing plate (110) and the second fixing plate (120).

5. The underground rock sampling equipment of claim 4, characterized in that: The telescopic device comprises a second telescopic rod (300) and a first telescopic rod (200), the telescopic ends of the second telescopic rod (300) and the first telescopic rod (200) are both fixedly connected to a second fixing plate (120), the telescopic end of the first telescopic rod (200) passes through the first fixing plate (110) and is slidably connected thereto, and the base end of the second telescopic rod (300) is fixedly connected to the first fixing plate (110).

6. The underground rock sampling equipment of claim 5, characterized in that: The base end of the second telescopic rod (300) is connected to the base end of the first telescopic rod (200) via a delivery pipe (320); the base end of the first telescopic rod (200) is connected to a liquid inlet joint (210); the first telescopic rod (200) and the second telescopic rod (300) are both elastic telescopic rods; the contraction elasticity of the second telescopic rod (300) is greater than the contraction elasticity of the first telescopic rod (200).

7. The underground rock sampling equipment of claim 5, characterized in that: The telescopic end of the first telescopic rod (200) is provided with a receiving groove for receiving the distance detection device (700), and a sealing piston is arranged inside the base end of the first telescopic rod (200), and the sealing piston separates the base end of the first telescopic rod (200) into a first control chamber and a second control chamber, and the first control chamber is located on the side close to the sampling device (100), and an elastic air bag is installed inside the first control chamber, and the elastic air bag is connected to a pump air pipeline with two built-in one-way valves, and the first pump air pipeline is connected to the receiving groove.

8. The underground rock sampling equipment of claim 7, characterized in that: The distance detection device (700) comprises a distance detection component (720) and an impeller (710); the impeller (710) is rotatably connected to the inner wall of the accommodating groove; the distance detection component (720) and the impeller (710) are connected via a connecting workpiece; and the distance detection component (720) is eccentrically arranged relative to the impeller (710).

9. The underground rock sampling equipment of claim 4, characterized in that: A material guide plate (121) arranged obliquely is fixed to the upper end of the second fixing plate (120), a blocking rod (122) arranged in the direction of the first fixing plate (110) is fixed to the side wall of the second fixing plate (120), and a side opening (111) adapted to the blocking rod (122) is opened on the side wall of the first fixing plate (110).

10. A method for sampling rock underground in a mine, characterized in that: Using the underground rock sampling equipment of any one of claims 1 to 9 comprises the following steps: S1. Determine the predetermined position of the rock to be sampled, and drive the underground rock sampling equipment of the mine to move to the outside of the predetermined position; S2, driving the sampling arm (800) towards a predetermined position, and then measuring the distance between the left and right ends of the sampling device (100) and the predetermined position by means of two distance detection devices (700); S3, generating a control signal according to the distance between the left and right ends of the sampling device (100) and the predetermined position, and transmitting the control signal to the first deflection device (500) to control the deflection angle of the installation platform (400) around the second axis.

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