Mining core drilling and sampling device

Abstract

The invention discloses a mining core drilling sampling device, and relates to the technical field of mining core drilling, the mining core drilling sampling device comprises a core drilling mechanism, the front side of the bottom of the core drilling mechanism is fixedly connected with a front supporting leg, the rear side of the bottom of the core drilling mechanism is fixedly connected with a rear supporting leg, and the front sides of the left side and the right side of the core drilling mechanism are rotatably connected with side face positioning mechanisms respectively; the core drilling device comprises a core drilling mechanism, the bottom of the core drilling mechanism is movably connected with a protection mechanism, the core drilling mechanism comprises a rectangular connecting rod, the inner wall of the rectangular connecting rod is designed to be hollowed out, and a connecting rod rear groove is formed in the rear side of the rectangular connecting rod. Dust splashing in the core drilling and sampling process can be effectively prevented, an effective isolation barrier is formed between an operator and a dust splashing area to protect the safety of the operator, accurate positioning can be conducted through a side face positioning mechanism under the special conditions of irregular end faces and the like, and the safety of the operator is improved. The success rate of the sampling process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mining core drilling, in particular to a mining core drilling sampling device. Background Art

[0002] Core sampling is an important basis for the acceptance of mine filling production. However, given the strict requirements of mines on the explosion-proof performance of electromechanical equipment, the currently widely used concrete coring devices can neither be carried to underground operations nor accurately sample irregular end faces; mining drills can technically meet the needs of coring, but they are bulky and expensive, and are obviously too luxurious for filling coring.

[0003] According to the patent document: CN214277482U, the disclosed rock core sampling device for geological prospecting includes an installation box and a drill barrel, and handles are fixed on the left and right sides of the installation box, respectively. A lithium battery, a motor and a cooling water box are arranged in the installation box, and the main shaft of the motor vertically extends downward from the bottom of the installation box and is connected to the upper end of the drill barrel through a transmission connection structure. The main shaft of the motor is provided with a through hole that is transparent from top to bottom along the center line, and the bottom of the cooling water box is connected to the upper port of the through hole through a diversion control valve, and the lower port of the through hole is located inside the drill barrel. The lithium battery supplies power to the motor, and a power switch for starting and closing the motor is arranged on the side of the installation box. The utility model has a scientific principle, a compact structure, and a small size. It adopts a handheld method for core sampling, which is convenient to operate. Water cooling is adopted in the core drilling process to improve the coring efficiency and extend the service life of the drill barrel. The drill barrel is easy to disassemble and install, which is not only portable, but also can replace drill barrels of different diameters and lengths.

[0004] In traditional mining core sampling equipment, due to the lack of corresponding protective devices, dust may splash when drilling core samples on the end face. In addition, the terrain in the mine is generally narrow, and it is not easy for operators to avoid it, which poses potential risks to the safety of operators. In addition, the sampling device usually only relies on the positioning head at the front end and the supporting legs at the bottom for basic positioning and support. In the face of special situations such as irregular end faces, the positioning accuracy is insufficient, which can easily lead to failure of the sampling process. Summary of the invention

[0005] The purpose of the present invention is to provide a mining core sampling device to solve the problem of lack of corresponding protective devices in the prior art. When core sampling is performed on the end face, dust may splash and the terrain in the mine is generally narrow, making it difficult for operators to avoid the dust. There are potential risks to the safety of the operators. In addition, the sampling device usually only relies on the positioning head at the front end and the supporting legs at the bottom for basic positioning and support. When faced with special situations such as irregular end faces, the positioning accuracy is insufficient, which can easily lead to the failure of the sampling process.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a mining core sampling device, comprising a core drilling mechanism, wherein the front side of the bottom of the core drilling mechanism is fixedly connected to a front support leg, the rear side of the bottom of the core drilling mechanism is fixedly connected to a rear support leg, the front sides of the left and right sides of the core drilling mechanism are rotatably connected to side positioning mechanisms respectively, and the bottom of the core drilling mechanism is movably connected to a protective mechanism;

[0007] The core drilling mechanism includes a rectangular connecting rod, the inner wall of which is hollow, a connecting rod rear groove is provided on the rear side of the rectangular connecting rod, a rack is fixedly connected to the top of the rectangular connecting rod, a propulsion block is slidably connected to the top of the rectangular connecting rod, a small motor is fixedly connected to the left side of the propulsion block, an output end of the small motor extends to the inner wall of the propulsion block and is fixedly connected to a half-tooth gear, a pneumatic drill is fixedly connected to the top of the propulsion block, and the outer wall of the half-tooth gear is meshed with the top of the rack.

[0008] Preferably, the front sides of the left and right sides of the rectangular connecting rod are respectively fixedly connected with hinge blocks, the front side of the rectangular connecting rod is fixedly connected with a positioning head, the front, middle and rear sides of the bottom of the rectangular connecting rod are respectively fixedly connected with hydraulic push rod connecting blocks, the bottoms of the three hydraulic push rod connecting blocks are fixedly connected with sliding rods, the inner walls of the front and middle two hydraulic push rod connecting blocks are fixedly connected with hydraulic push rods, the rear end of the hydraulic push rod is fixedly connected with a sliding block, the top of the sliding block extends to the inner wall of the rectangular connecting rod and the outer wall is slidably connected to the bottom inner wall of the rectangular connecting rod.

[0009] Preferably, the side positioning mechanism includes a side positioning mechanism shell, the outer wall of the side positioning mechanism shell is movably connected to the inner wall of one side of the rectangular connecting rod, the front side of the side positioning mechanism shell is fixedly connected to a positioning mechanism shell connecting block, the front side of the positioning mechanism shell connecting block is fixedly connected to a gear, and the outer wall of the gear is rotatably connected to the inner wall of the hinge block.

[0010] Preferably, a plurality of slots are provided on one side of the inner wall of the side positioning mechanism shell, a bottom slide slot is provided on the bottom of the inner wall of the side positioning mechanism shell, the inner wall of the side positioning mechanism shell is rotatably connected to an extension rod, a bottom rear side of the bottom of the extension rod is fixedly connected to a bottom slider, an outer wall of the bottom slider is slidably connected to the inner wall of the bottom slide slot, a card block is slidably connected to the rear side of the inner wall of the extension rod, one side of the card block extends to the outer wall of the extension rod and is movably connected to the inner wall of one of the slots, a side of the card block close to the inner wall of the extension rod is fixedly connected to a spring, and a side of the card block away from the inner wall of the extension rod is a semicircular cross-section.

[0011] Preferably, the protective mechanism includes an L-shaped push-pull rod, the top of the rear side of the L-shaped push-pull rod is fixedly connected to a transmission rod, the front side of the transmission rod extends to the inner wall of the rectangular connecting rod through the rear groove of the connecting rod and is fixedly connected to side rack rods on the left and right sides, and the outer sides of the two side rack rods are respectively engaged with the outer walls of the two gears.

[0012] Preferably, the rear side of the bottom of the L-shaped push-pull rod is fixedly connected to the bottom of the slider, the front and rear sides of the left and right sides of the L-shaped push-pull rod are rotatably connected to rotating rods, and the left and right groups of rotating rods are rotatably connected to the side away from the L-shaped push-pull rod with a slide plate.

[0013] Preferably, the inner walls of the left and right groups of slide groove plates are respectively slidably connected to the two sides of the outer walls of the two slide rods, the outer sides of the two groups of slide groove plates are fixedly connected with inverted L-shaped protective plates, the front bottom sides of the outer sides of the two inverted L-shaped protective plates are provided with side positioning rod extension grooves, and the tops of the outer sides of the two inverted L-shaped protective plates are fixedly connected with rubber transparent plates.

[0014] Preferably, the rear supporting leg comprises two rear supporting leg hinge blocks, the inner sides of the two rear supporting leg hinge blocks are rotatably connected to the rear supporting leg main body, the inner wall tops of the two rear supporting leg main bodies are fixedly connected to the second hydraulic push rod, and the inner bottoms of the two rear supporting leg main bodies are fixedly connected to the supporting rotating rod hinge blocks.

[0015] Preferably, the bottom ends of the two second hydraulic push rods are fixedly connected to an articulated slider, the outer walls of the two articulated sliders are slidably connected to the bottom of the inner wall of the rear supporting leg body, the two articulated sliders are rotatably connected to a rotating rod on one side away from the rear supporting leg body, and the two rotating rods are rotatably connected to a rotating rod slider on one side away from the articulated slider.

[0016] Preferably, the outer walls of the two rotating rod sliders are slidably connected to the supporting rotating rods, and the two supporting rotating rods are provided with supporting rotating rod sliding grooves on one side close to the rear supporting leg body, the outer walls of the two rotating rod sliders are slidably connected to the inner walls of the supporting rotating rod sliding grooves, and the bottom inner walls of the two supporting rotating rods are rotatably connected to the outer wall of the supporting rotating rod hinge block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present application is provided with a protective mechanism and a side positioning mechanism, which can effectively prevent dust from splashing during the core sampling process, and an effective isolation barrier is formed between the operator and the dust splashing area to protect the safety of the operator. The side positioning mechanism enables precise positioning through the side positioning mechanism when facing special situations such as irregular end faces, thereby improving the success rate of the sampling process. Specifically, when core sampling is required, the mining core sampling device is transported to the drilling position, the motor is started, and the transmission propulsion block drives the pneumatic drill to move along the rectangular connecting rod. After reaching the designated position, the hydraulic push rod is started to push the L-shaped push-pull rod and the transmission rod to realize the rotation of the side positioning mechanism housing. When the L-shaped push-pull rod moves, it drives the rotating rod to change the angle, so that the protective plate is closed, and the pneumatic drill pushes the drill bit deep into the ore body for sampling. The protective plate protects the operator from debris and dust. The length of the side positioning mechanism housing is adjustable. By pulling the extension rod, the card block slides along the card slot under the action of the spring to adapt to different drilling widths, ensuring the stability and accuracy of the device;

[0019] 2. The present application solves the problem of instability of the device during use caused by insufficient ground flatness by providing a rear support leg. Specifically, to ensure stability, the hydraulic system is required to apply pressure to the second hydraulic push rod to make the articulated slider rise along the inner wall of the rear support leg, and the rotating rod rotates and changes its angle accordingly. The rotating rod slider slides on the inner wall of the slide groove, pushing the supporting rotating rod to rotate to a horizontal position, forming a triangular support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main three-dimensional structure of the mining core sampling device of the present invention;

[0021] Figure 2 This is a schematic diagram of the main body three-dimensional separation structure of the mining core sampling device of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional separation structure of the main part of the mining core sampling device of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional separation structure of the core drilling mechanism of the mining core sampling device of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the side positioning mechanism of the mining core sampling device of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional separation structure of the side positioning mechanism of the mining core sampling device of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the protection mechanism of the mining core sampling device of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional separation structure of the protection mechanism of the mining core sampling device of the present invention;

[0028] Fig. 9 It is a schematic diagram of a three-dimensional cross-sectional structure of a rear support leg of a mining core sampling device of the present invention;

[0029] Fig.10 It is a schematic diagram of the three-dimensional separated cross-sectional structure of the rear support leg of the mining core sampling device of the present invention.

[0030] Numbers in the figure: 1, core drilling mechanism; 11, rectangular connecting rod; 12, rear groove of connecting rod; 13, hinge block; 14, rack; 15, positioning head; 16, hydraulic push rod connecting block; 17, slide rod; 18, hydraulic push rod; 19, slide block; 110, push block; 111, small motor; 112, half-tooth gear; 113, pneumatic drilling rig; 2, protection mechanism; 21, L-shaped push-pull rod; 22, transmission rod; 23, side rack rod; 24, rotating rod; 25, inverted L-shaped protection plate; 26, slide plate; 27, side positioning rod extension slot; 2 8. Rubber transparent plate; 3. Front support leg; 4. Rear support leg; 41. Rear support leg hinge block; 42. Rear support leg body; 43. Second hydraulic push rod; 44. Support rotating rod hinge block; 45. Articulated slider; 46. Rotating rod; 47. Rotating rod slider; 48. Support rotating rod; 49. Support rotating rod slide groove; 5. Side positioning mechanism; 51. Side positioning mechanism housing; 52. Gear; 53. Positioning mechanism housing connecting block; 54. Bottom slide groove; 55. Card slot; 56. Extension rod; 57. Card block; 58. Spring; 59. Bottom slide groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example: Figure 1-3 As shown, the present invention provides a technical solution for a mining core sampling device, including a core drilling mechanism 1, a front supporting leg 3 is fixedly connected to the front side of the bottom of the core drilling mechanism 1, a rear supporting leg 4 is fixedly connected to the rear side of the bottom of the core drilling mechanism 1, the front sides of the left and right sides of the core drilling mechanism 1 are rotatably connected to side positioning mechanisms 5 respectively, and the bottom of the core drilling mechanism 1 is movably connected to a protective mechanism 2.

[0033] See also Figure 4-8The core drilling mechanism 1 includes a rectangular connecting rod 11, the inner wall of the rectangular connecting rod 11 is hollowed out, a connecting rod rear groove 12 is provided on the rear side of the rectangular connecting rod 11, a rack 14 is fixedly connected to the top of the rectangular connecting rod 11, a propulsion block 110 is slidably connected to the top of the rectangular connecting rod 11, a small motor 111 is fixedly connected to the left side of the propulsion block 110, an output end of the small motor 111 extends to the inner wall of the propulsion block 110 and is fixedly connected to a half-tooth gear 112, a pneumatic drill 113 is fixedly connected to the top of the propulsion block 110, an outer wall of the half-tooth gear 112 is meshed with the top of the rack 14, hinge blocks 13 are fixedly connected to the front sides of the left and right sides of the rectangular connecting rod 11, a positioning head 15 is fixedly connected to the front side of the rectangular connecting rod 11, and a small motor 111 is fixedly connected to the left side of the propulsion block 110. The front, middle and rear sides of the bottom of the connecting rod 11 are respectively fixedly connected with hydraulic push rod connecting blocks 16, and the bottoms of the three hydraulic push rod connecting blocks 16 are fixedly connected with sliding rods 17. The inner walls of the two front and middle hydraulic push rod connecting blocks 16 are fixedly connected with hydraulic push rods 18, and the rear end of the hydraulic push rod 18 is fixedly connected with a sliding block 19. The top of the sliding block 19 extends to the inner wall of the rectangular connecting rod 11 and the outer wall is slidably connected to the bottom inner wall of the rectangular connecting rod 11. The side positioning mechanism 5 includes a side positioning mechanism shell 51, and the outer wall of the side positioning mechanism shell 51 is movably connected to the inner wall of one side of the rectangular connecting rod 11. The front side of the side positioning mechanism shell 51 is fixedly connected with a positioning mechanism shell connecting block 53, and the front side of the positioning mechanism shell connecting block 53 is fixedly connected with a gear 52. The outer wall of the gear 52 is rotatably connected to the inner wall of the hinge block 13, a plurality of slots 55 are provided on one side of the inner wall of the side positioning mechanism housing 51, a bottom slide groove 54 is provided at the bottom of the inner wall of the side positioning mechanism housing 51, an extension rod 56 is rotatably connected to the inner wall of the extension rod 56, a bottom slider 59 is fixedly connected to the bottom rear side of the extension rod 56, the outer wall of the bottom slider 59 is slidably connected to the inner wall of the bottom slide groove 54, a block 57 is slidably connected to the rear side of the inner wall of the extension rod 56, one side of the block 57 extends to the outer wall of the extension rod 56 and is movably connected to the inner wall of one of the slots 55, a spring 58 is fixedly connected to one side of the block 57 close to the inner wall of the extension rod 56, and a semicircular cross-section is formed on the side of the block 57 away from the inner wall of the extension rod 56. The protective mechanism 2 includes The L-shaped push-pull rod 21 includes a transmission rod 22 fixedly connected to the top of the rear side of the L-shaped push-pull rod 21, and the front side of the transmission rod 22 extends to the inner wall of the rectangular connecting rod 11 through the connecting rod rear groove 12, and the left and right sides are respectively fixedly connected with side rack rods 23, and the outer sides of the two side rack rods 23 are respectively meshed with the outer walls of the two gears 52. The bottom rear side of the L-shaped push-pull rod 21 is fixedly connected to the bottom of the slider 19, and the front and rear sides of the left and right sides of the L-shaped push-pull rod 21 are both rotatably connected with rotating rods 24. The left and right two groups of rotating rods 24 are both rotatably connected with the side of the L-shaped push-pull rod 21. The inner walls of the left and right two groups of slide plates 26 are respectively slidably connected to the two sides of the outer walls of the two slide rods 17, and the outer sides of the two groups of slide plates 26 are fixedly connected with inverted L-shaped protective plates 25.The front bottom of the outer sides of the two inverted L-shaped protective plates 25 are provided with side positioning rod extension grooves 27, and the tops of the outer sides of the two inverted L-shaped protective plates 25 are fixedly connected with rubber transparent plates 28;

[0034] When core sampling is required, the mining core sampling device is first transported to the predetermined drilling position, and the small motor 111 is started. After the small motor 111 is started, the half-tooth gear 112 on the inner wall of the transmission propulsion block 110 rotates and meshes with the rack 14 on the top of the rectangular connecting rod 11, so that the propulsion block 110 drives the pneumatic drill 113 to move forward on the top of the rectangular connecting rod 11. When the pneumatic drill 113 moves to a certain position, the hydraulic push rod 18 at the bottom is started. After the hydraulic push rod 18 is started, the slide block 19 is pulled to drive the L-shaped push-pull rod 21 to move forward, thereby The transmission rod 22 on the top is pushed to slide forward on the inner wall of the rectangular connecting rod 11. When the L-shaped push-pull rod 21 slides forward, the side rack rods 23 on both sides mesh with the gears 52 in the rear groove 12 of the connecting rod, so that the left and right sides of the rectangular connecting rod 11 rotate respectively, thereby realizing the rotation of the side positioning mechanism housing 51. At this time, the L-shaped push-pull rod 21 moves, thereby driving the rotating rods 24 on both sides to rotate and change the angle, thereby pulling the two sets of slide slot plates 26 to slide on the outer wall of the slide rod 17, so that the two inverted L-shaped protective plates 25 move inward until they are closed.

[0035] As the pneumatic drill 113 is further advanced, the drill bit gradually penetrates into the ore body and begins to perform core sampling. During the core sampling process, ore debris and dust may splash around. At this time, the inverted L-shaped protective plate 25 plays an important protective role, effectively blocking debris and dust to protect the safety of operators.

[0036] When the side positioning mechanism shell 51 is rotated and unfolded, if it is necessary to adjust the length of the side positioning mechanism shell 51 according to the situation, the extension rod 56 can be pulled to achieve this. When the extension rod 56 is pulled, the block 57 slides along the slot 55 under the action of the spring 58, thereby adjusting the length of the side positioning mechanism shell 51 to adapt to drill holes of different widths. In this way, the side positioning mechanism shell 51 can fit tightly on the side wall of the drill hole, ensuring the stability and accuracy of the core sampling device.

[0037] See also Figure 9-10The rear support leg 4 includes two rear support leg hinge blocks 41, the inner sides of the two rear support leg hinge blocks 41 are rotatably connected to the rear support leg body 42, the inner wall tops of the two rear support leg bodies 42 are fixedly connected to the second hydraulic push rods 43, the inner bottoms of the two rear support leg bodies 42 are fixedly connected to the support rod hinge blocks 44, the bottom ends of the two second hydraulic push rods 43 are fixedly connected to the articulated sliders 45, the outer walls of the two articulated sliders 45 are slidably connected to the inner wall bottoms of the rear support leg bodies 42, and the two articulated sliders 4 The side away from the rear supporting leg body 42 is rotatably connected with a rotating rod 46, the side away from the hinged slider 45 is rotatably connected with a rotating rod slider 47, the outer walls of the two rotating rod sliders 47 are slidably connected with a supporting rotating rod 48, the side of the two supporting rotating rods 48 close to the rear supporting leg body 42 is provided with a supporting rotating rod sliding groove 49, the outer walls of the two rotating rod sliders 47 are slidably connected to the inner wall of the supporting rotating rod sliding groove 49, and the bottom inner walls of the two supporting rotating rods 48 are rotatably connected to the outer wall of the supporting rotating rod hinge block 44;

[0038] When the ground is not flat enough, in order to ensure the stability of the support, it is necessary to first use the hydraulic system to apply pressure to the second hydraulic push rod 43, which will prompt the articulated slider 45 to move upward along the inner wall of the rear support leg body 42. As the articulated slider 45 rises, the rotating rod 46 rotates and changes its angle, and the rotating rod slider 47 slides on the inner wall of the supporting rotating rod slot 49, thereby pushing the supporting rotating rod 48 to rotate to a horizontal position. Finally, the entire rear support leg 4 forms a triangular support structure.

[0039] Working principle: When core sampling is required, first move the mining core sampling device to the predetermined drilling position, start the small motor 111, and after the small motor 111 is started, the half-tooth gear 112 on the inner wall of the transmission push block 110 rotates and meshes with the rack 14 on the top of the rectangular connecting rod 11, so that the push block 110 drives the pneumatic drill 113 to move forward on the top of the rectangular connecting rod 11. When the pneumatic drill 113 moves to a certain position, start the hydraulic push rod 18 at the bottom. After the hydraulic push rod 18 is started, the slider 19 is pulled to drive the L-shaped push-pull rod 21 to move forward, thereby pushing the top transmission rod 22 to slide forward on the inner wall of the rectangular connecting rod 11. When the L-shaped push-pull rod 21 slides forward, the side rack rods 23 on both sides are aligned with the rear groove 1 of the connecting rod. 2 is meshed, so that the left and right sides of the rectangular connecting rod 11 rotate respectively, thereby realizing the rotation of the side positioning mechanism housing 51. At this time, due to the movement of the L-shaped push-pull rod 21, the rotating rods 24 on both sides are driven to rotate and change the angle, thereby pulling the two sets of slide plates 26 to slide on the outer wall of the slide rod 17, so that the two inverted L-shaped protective plates 25 move inward until they are closed. When core sampling is required, the mining core sampling device is first transported to the predetermined drilling position, and the small motor 111 is started. After the small motor 111 is started, the half-tooth gear 112 on the inner wall of the transmission propulsion block 110 rotates accordingly and meshes with the rack 14 at the top of the rectangular connecting rod 11. As a result, the propulsion block 110 drives the pneumatic drill 113 along the top of the rectangular connecting rod 11 The end moves forward. When the pneumatic drill 113 moves to a certain position, the hydraulic push rod 18 at the bottom is started. After the hydraulic push rod 18 is started, the slider 19 is pulled to drive the L-shaped push-pull rod 21 to move forward, thereby pushing the top transmission rod 22 to slide forward on the inner wall of the rectangular connecting rod 11. When the L-shaped push-pull rod 21 slides forward, the side rack rods 23 on both sides are engaged with the gears 52 in the rear groove 12 of the connecting rod, so that the left and right sides of the rectangular connecting rod 11 rotate respectively, thereby realizing the rotation of the side positioning mechanism housing 51. At this time, due to the movement of the L-shaped push-pull rod 21, the rotating rods 24 on both sides are driven to rotate and change the angle, thereby pulling the two sets of slide groove plates 26 to slide on the outer wall of the slide rod 17, so that the two inverted L-shaped protective plates 25 move inward until To close, with the further advancement of the pneumatic drill 113, the drill bit gradually penetrates into the ore body and starts the core sampling operation. During the core sampling process, ore debris and dust may splash around. At this time, the inverted L-shaped protective plate 25 plays an important protective role, effectively blocking debris and dust and protecting the safety of operators. After the side positioning mechanism shell 51 is rotated and unfolded, if it is necessary to adjust the length of the side positioning mechanism shell 51 according to the situation, the extension rod 56 can be pulled to achieve it. When the extension rod 56 is pulled, the block 57 slides along the card slot 55 under the action of the spring 58, thereby adjusting the length of the side positioning mechanism shell 51 to adapt to drilling holes of different widths. In this way, the side positioning mechanism shell 51 can fit tightly on the side wall of the drill hole.Ensure the stability and accuracy of the core sampling device;

[0040] When the ground is not flat enough, in order to ensure the stability of the support, it is necessary to first use the hydraulic system to apply pressure to the second hydraulic push rod 43, which will prompt the articulated slider 45 to move upward along the inner wall of the rear support leg body 42. As the articulated slider 45 rises, the rotating rod 46 rotates and changes its angle, and the rotating rod slider 47 slides on the inner wall of the supporting rotating rod slot 49, thereby pushing the supporting rotating rod 48 to rotate to a horizontal position. Finally, the entire rear support leg 4 forms a triangular support structure.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mining core sampling device, characterized in that: The core drilling mechanism (1) comprises a front support leg (3) fixedly connected to the front side of the bottom of the core drilling mechanism (1), a rear support leg (4) fixedly connected to the rear side of the bottom of the core drilling mechanism (1), a side positioning mechanism (5) rotatably connected to the front sides of the left and right sides of the core drilling mechanism (1), and a protective mechanism (2) movably connected to the bottom of the core drilling mechanism (1); The core drilling mechanism (1) comprises a rectangular connecting rod (11), the inner wall of the rectangular connecting rod (11) is of hollow design, a connecting rod rear groove (12) is provided on the rear side of the rectangular connecting rod (11), a rack (14) is fixedly connected to the top of the rectangular connecting rod (11), a propulsion block (110) is slidably connected to the top of the rectangular connecting rod (11), a small motor (111) is fixedly connected to the left side of the propulsion block (110), an output end of the small motor (111) extends to the inner wall of the propulsion block (110) and is fixedly connected to a half-tooth gear (112), a pneumatic drill (113) is fixedly connected to the top of the propulsion block (110), and the outer wall of the half-tooth gear (112) is meshed with the top of the rack (14).

2. The mining core sampling device according to claim 1, characterized in that: The front sides of the left and right sides of the rectangular connecting rod (11) are respectively fixedly connected with hinge blocks (13), the front side of the rectangular connecting rod (11) is fixedly connected with a positioning head (15), the front, middle and rear sides of the bottom of the rectangular connecting rod (11) are respectively fixedly connected with hydraulic push rod connecting blocks (16), the bottoms of the three hydraulic push rod connecting blocks (16) are all fixedly connected with sliding bars (17), the inner walls of the front and middle two hydraulic push rod connecting blocks (16) are both fixedly connected with hydraulic push rods (18), the rear end of the hydraulic push rod (18) is fixedly connected with a sliding block (19), the top of the sliding block (19) extends to the inner wall of the rectangular connecting rod (11) and the outer wall is slidably connected to the bottom of the rectangular connecting rod (11).

3. The mining core sampling device according to claim 1, characterized in that: The side positioning mechanism (5) comprises a side positioning mechanism housing (51), the outer wall of the side positioning mechanism housing (51) being movably connected to the inner wall of one side of the rectangular connecting rod (11), the front side of the side positioning mechanism housing (51) being fixedly connected to a positioning mechanism housing connecting block (53), the front side of the positioning mechanism housing connecting block (53) being fixedly connected to a gear (52), and the outer wall of the gear (52) being rotatably connected to the inner wall of the hinge block (13).

4. The mining core sampling device according to claim 3, characterized in that: A plurality of slots (55) are provided on one side of the inner wall of the side positioning mechanism housing (51); a bottom slide groove (54) is provided at the bottom of the inner wall of the side positioning mechanism housing (51); an extension rod (56) is rotatably connected to the inner wall of the side positioning mechanism housing (51); a bottom slider (59) is fixedly connected to the bottom rear side of the extension rod (56); an outer wall of the bottom slider (59) is slidably connected to the inner wall of the bottom slide groove (54); a block (57) is slidably connected to the inner wall of the bottom slide groove (54) at the rear side of the inner wall of the extension rod (56); one side of the block (57) extends to the outer wall of the extension rod (56) and is movably connected to the inner wall of one of the slots (55); a spring (58) is fixedly connected to the side of the block (57) close to the inner wall of the extension rod (56); and a semicircular cross section is formed on the side of the block (57) away from the inner wall of the extension rod (56).

5. The mining core sampling device according to claim 1, characterized in that: The protection mechanism (2) comprises an L-shaped push-pull rod (21), the top of the rear side of the L-shaped push-pull rod (21) is fixedly connected to a transmission rod (22), the front side of the transmission rod (22) extends to the inner wall of the rectangular connecting rod (11) through the connecting rod rear groove (12) and is fixedly connected to side rack rods (23) on the left and right sides respectively, and the outer sides of the two side rack rods (23) are respectively meshed with the outer walls of the two gears (52).

6. The mining core sampling device according to claim 5, characterized in that: The rear side of the bottom of the L-shaped push-pull rod (21) is fixedly connected to the bottom of the slider (19), and the front and rear sides of the left and right sides of the L-shaped push-pull rod (21) are both rotatably connected to rotating rods (24), and the left and right groups of rotating rods (24) are both rotatably connected to the side away from the L-shaped push-pull rod (21) with a slide plate (26).

7. The mining core sampling device according to claim 6, characterized in that: The inner walls of the left and right groups of the slide groove plates (26) are respectively slidably connected to the two sides of the outer walls of the two slide bars (17); the outer sides of the two groups of the slide groove plates (26) are fixedly connected with inverted L-shaped protective plates (25); the front bottoms of the outer sides of the two inverted L-shaped protective plates (25) are provided with side positioning rod extension grooves (27); and the tops of the outer sides of the two inverted L-shaped protective plates (25) are fixedly connected with rubber transparent plates (28).

8. The mining core sampling device according to claim 1, characterized in that: The rear supporting leg (4) comprises two rear supporting leg hinge blocks (41), the inner sides of the two rear supporting leg hinge blocks (41) are rotatably connected to the rear supporting leg main body (42), the inner wall tops of the two rear supporting leg main bodies (42) are fixedly connected to the second hydraulic push rod (43), and the inner bottoms of the two rear supporting leg main bodies (42) are fixedly connected to the support rotating rod hinge blocks (44).

9. The mining core sampling device according to claim 8, characterized in that: The bottom ends of the two second hydraulic push rods (43) are fixedly connected to an articulated slider (45), the outer walls of the two articulated sliders (45) are slidably connected to the bottom of the inner wall of the rear supporting leg body (42), the sides of the two articulated sliders (45) away from the rear supporting leg body (42) are rotatably connected to a rotating rod (46), and the sides of the two rotating rods (46) away from the articulated sliders (45) are rotatably connected to a rotating rod slider (47).

10. The mining core sampling device according to claim 9, characterized in that: The outer walls of the two rotating rod sliders (47) are slidably connected to the supporting rotating rod (48), and the two supporting rotating rods (48) are provided with supporting rotating rod sliding grooves (49) on one side close to the rear supporting leg body (42). The outer walls of the two rotating rod sliders (47) are slidably connected to the inner walls of the supporting rotating rod sliding grooves (49), and the bottom inner walls of the two supporting rotating rods (48) are rotatably connected to the outer wall of the supporting rotating rod hinge block (44).

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