Rock coring device for geotechnical engineering investigation

Abstract

The invention relates to the technical field of geotechnical engineering investigation equipment, and particularly discloses a geotechnical engineering investigation rock coring device which comprises supporting legs, a mounting frame is fixedly connected to the top ends of the supporting legs, and a first air cylinder is fixedly connected to the top end of the mounting frame. When the coring cylinder works, crushed materials can be guided to be discharged out of the coring cylinder, the crushed materials are preliminarily buffered through a rubber soft cushion on a buffer plate, then under the synergistic effect of a plurality of damping springs and a high-performance damper, the buffer plate is further subjected to damping treatment, and due to the fact that the buffer plate is ingeniously arranged in the inner space of a material baffle, the buffering effect is good. According to the arrangement, the crushed aggregates can be effectively prevented from splashing upwards, so that potential injury to the coring device and operators is avoided, the crushed aggregates are prevented from being agglomerated into blocks in the coring barrel, and the difficulty and time cost of subsequent cleaning work can be remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering investigation equipment, in particular to a rock coring device for geotechnical engineering investigation. Background Art

[0002] Geotechnical engineering investigation is an engineering activity that integrates on-site investigation, indoor data compilation, analysis, evaluation and mapping. It aims to conduct a comprehensive and in-depth investigation and analysis of the geological, environmental characteristics and geotechnical conditions of the construction site through the use of various surveying techniques and methods. In geotechnical engineering investigation, coring devices are needed to use impact force to break rocks and obtain core samples.

[0003] For example, a Chinese patent with announcement number CN215525143U discloses a rock coring device for geotechnical engineering investigation and crushing, including a U-shaped bracket, an electric push rod is provided in the middle of the upper end surface of the inner wall of the U-shaped bracket, a protective box is provided at the output end of the electric push rod, a motor is provided in the protective box, a main shaft is provided at the output end of the motor, a hollow drill bit is connected to the lower end of the main shaft, a push plate is provided on the upper side of the inner wall of the hollow drill bit, a screw sleeve is provided on the right side of the top surface of the hollow drill bit, and a screw rod is connected to the inner thread of the screw sleeve.

[0004] Although the above-mentioned patent has solved the problem that at present, the staff usually adopts the method of knocking the outer wall of the hollow drill bit to solve this problem. However, this method is likely to cause the rock core sample to break, affect the results of geotechnical engineering survey, and cause the hollow drill bit to deform, reducing the service life of the hollow drill bit. However, the existing rock coring device still has some defects that need to be improved. Specifically, during the coring operation, a large amount of broken materials are often squeezed and condensed into blocks, which are retained inside the coring barrel and cannot be discharged. This undoubtedly brings great inconvenience to the subsequent cleaning work. In addition, the current coring barrel design often adopts a fixed structure, which is neither removable nor easy to replace. This undoubtedly greatly limits its ability to adapt to different coring needs and cannot meet the diverse geotechnical engineering survey operation requirements. Summary of the invention

[0005] The object of the present invention is to provide a rock coring device for geotechnical engineering investigation to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a rock coring device for geotechnical engineering exploration, comprising a support leg, the top of the support leg is fixedly connected to a mounting bracket, the top of the mounting bracket is fixedly connected to a first cylinder, the output end of the first cylinder is fixedly connected to a mounting seat, the bottom end of the mounting seat is fixedly connected to a motor, both sides of the mounting seat are fixedly connected to a connecting rod, the connecting rod is fixedly connected to a baffle plate on a side away from the mounting seat, the inner side of the baffle plate is provided with a buffer assembly, the output end of the motor is provided with a connecting mechanism, the output end of the motor is connected to a coring barrel through the connecting mechanism, one side of the coring barrel is fixedly connected to a connecting bracket, the interior of the connecting bracket is provided with a material guide hole, and a plurality of material guide holes are provided, the side of the baffle plate close to the connecting rod is provided with a rotating mechanism, the interior of the connecting bracket is provided with a pushing assembly, and one side of the pushing assembly is movably connected to the interior of the coring barrel;

[0007] The buffer assembly includes a shock-absorbing spring, which is fixedly connected to the inside of the material baffle plate, and there are multiple shock-absorbing springs. A damper is fixedly connected to the inner side of the shock-absorbing spring in the material baffle plate, and a common end of the shock-absorbing spring and the damper is fixedly connected to the buffer plate. A rubber pad is pasted on the side of the buffer plate away from the material baffle plate.

[0008] Furthermore, through holes are provided inside the material blocking plate and the buffer plate, and one side of the connecting mechanism passes through the through holes.

[0009] Furthermore, the connecting mechanism includes a connecting shaft, which is fixedly connected to the output end of the motor, a cross slot is opened inside the connecting shaft, a cross rod is inserted into the inside of the cross slot, the bottom end of the cross rod is fixedly connected to the top end of the connecting frame, first positioning holes are opened on both sides of the cross rod, a first positioning rod is inserted into the inside of the first positioning hole, and driving components are provided on both sides of the connecting shaft, and the first positioning rod is fixedly connected to the first positioning hole through the driving component.

[0010] Furthermore, the driving assembly includes a first slide groove, the first slide groove is opened inside the connecting shaft, the first slide groove is slidably connected to the inside of the first slide groove, the first slide groove is fixedly connected to the first positioning rod, a return spring is fixedly connected between the first slide groove and the first slide groove, and two return springs are provided, a steel wire rope is fixedly connected to the first slide groove between the two return springs, a handle is fixedly connected to the side of the steel wire rope away from the first slide, and the handle is fixedly connected to the material baffle plate through a rotating mechanism.

[0011] Furthermore, the rotating mechanism includes a circular ring, which is rotatably connected to the outer side of the material baffle plate, and mounting blocks are fixedly connected to both sides of the circular ring, and the mounting blocks are located above the handle. A fixing component is provided on the mounting block, and the handle is fixedly connected to the mounting block through the fixing component. A guide sleeve is fixedly connected to one side of the mounting block, and one side of the wire rope slides through the guide sleeve.

[0012] Furthermore, the fixing component includes a second slide groove, the second slide groove is opened on the mounting block, the second slide groove is slidably connected to the inside of the second slide groove, the second slide groove is rotatably connected to the inside of the second slide groove, the second slide block is threadedly connected to the screw, one end of the second slide block is fixedly connected to a second positioning rod on both sides, a second positioning hole is opened on the handle, and one side of the second positioning rod is movably connected to the second positioning hole.

[0013] Furthermore, the pushing assembly includes a second cylinder, which is fixedly connected to the inside of the cross rod, and the output end of the second cylinder is fixedly connected to a pushing plate, a storage hole is provided at the bottom of the cross rod, and the pushing plate is movably connected to the storage hole, and guide rods are fixedly connected to both sides of the top of the pushing plate, and the guide rods are slidably connected to the cross rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Firstly, in the present invention, a connecting frame is installed in the coring barrel, and a material guide hole is provided in the connecting frame, so that the debris can be guided to be discharged from the coring barrel when the coring barrel is working. The debris is initially buffered by the rubber pad on the buffer plate, and then the buffer plate is further subjected to the synergistic action of multiple shock-absorbing springs and high-performance dampers. Since the buffer plate is cleverly arranged in the internal space of the material baffle plate, such a layout can not only effectively prevent the debris from splashing upward, thereby avoiding potential damage to the coring device and the operator, but also reduce the aggregation of debris into blocks inside the coring barrel, which can significantly reduce the difficulty and time cost of subsequent cleaning work, which not only improves work efficiency, but also reduces the physical burden of the operator, making the entire coring operation process smoother and more efficient.

[0016] Secondly, in the present invention, by setting the output end of the coring barrel and the motor as a detachable structure, the handle is pulled, the handle drives the wire rope to move, the wire rope drives the first slider to slide in the first slide groove, the first slider drives the first positioning rod to move, the first positioning rod leaves the first positioning hole, and the cross rod is no longer connected and fixed to the cross groove in the connecting shaft, so that the coring barrel can be removed from the output end of the motor. According to the specific needs of different geotechnical engineering survey operations, the coring barrels of different specifications and materials can be flexibly adjusted or replaced. Such a design greatly enhances the versatility and adaptability of the equipment, so that the same set of equipment can cope with more diverse geological conditions and coring requirements, and reduces the cost of purchasing and maintaining multiple equipment.

[0017] Thirdly, in the present invention, by providing a circular ring, a mounting block and a guide sleeve, the wire rope can be guided to pass through and be installed on the mounting block, thereby ensuring that the wire rope is fixed in position, avoiding messy placement of the wire rope affecting the use of the core barrel, and will not affect the smooth rotation of the core barrel at all, thereby ensuring that the coring device is neat and orderly. The fixing component is provided to fix the handle connected to the wire rope to prevent the handle from loosening and causing an unstable connection between the cross rod and the cross groove, thereby ensuring that the core barrel is installed stably, firmly and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure in the present invention when viewed from above;

[0020] Figure 3 It is a schematic diagram of the partial structure of the buffer component in the present invention;

[0021] Figure 4 It is a schematic diagram of the installation block structure in the present invention;

[0022] Figure 5 It is a schematic diagram of the connection structure between the connecting shaft and one side of the coring barrel in the present invention;

[0023] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at point A;

[0024] Figure 7 It is a schematic diagram of the connection structure between the connecting shaft and the other side of the coring barrel in the present invention;

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the core barrel in the present invention.

[0026] In the figure: 1, support leg; 2, mounting frame; 3, first cylinder; 4, mounting seat; 5, motor; 6, connecting rod; 7, material blocking plate; 8, buffer assembly; 81, shock absorbing spring; 82, damper; 83, buffer plate; 84, rubber cushion; 85, through hole; 9, core barrel; 10, connecting frame; 11, material guide hole; 12, connecting mechanism; 121, connecting shaft; 122, cross groove; 123, cross rod; 124, first positioning rod; 125, first positioning hole; 126, driving assembly; 1261 , first slide groove; 1262, first slider; 1263, return spring; 1264, wire rope; 1265, handle; 13, rotation mechanism; 131, ring; 132, mounting block; 133, guide sleeve; 134, fixing assembly; 1341, second slide groove; 1342, second slider; 1343, screw; 1344, second positioning rod; 1345, second positioning hole; 14, pushing assembly; 141, second cylinder; 142, pushing plate; 143, guide rod; 144, storage hole. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 8In an embodiment of the present invention, a rock coring device for geotechnical engineering investigation includes a supporting leg 1, a mounting frame 2 is fixedly connected to the top of the supporting leg 1, a first cylinder 3 is fixedly connected to the top of the mounting frame 2, an output end of the first cylinder 3 is fixedly connected to a mounting seat 4, a motor 5 is fixedly connected to the bottom end of the mounting seat 4, connecting rods 6 are fixedly connected to both sides of the mounting seat 4, a material baffle plate 7 is fixedly connected to the side of the connecting rod 6 away from the mounting seat 4, a buffer assembly 8 is arranged on the inner side of the material baffle plate 7, a connecting mechanism 12 is arranged at the output end of the motor 5, a coring barrel 9 is connected to the output end of the motor 5 through the connecting mechanism 12, a connecting frame 10 is fixedly connected to one side of the coring barrel 9, a material guide hole 11 is provided inside the connecting frame 10, and a plurality of material guide holes 11 are provided, a rotating mechanism 13 is provided on the side of the material baffle plate 7 close to the connecting rod 6, a pushing assembly 14 is arranged inside the connecting frame 10, and one of the pushing assembly 14 The side is movably connected to the inside of the core barrel 9, and the buffer assembly 8 includes a shock-absorbing spring 81, which is fixedly connected to the inside of the material baffle plate 7, and there are multiple shock-absorbing springs 81. A damper 82 is fixedly connected to the inner side of the shock-absorbing spring 81 in the material baffle plate 7, and a common end of the shock-absorbing spring 81 and the damper 82 is fixedly connected to a buffer plate 83, and a rubber pad 84 is pasted on the side of the buffer plate 83 away from the material baffle plate 7. By installing a connecting frame 10 in the core barrel 9 and providing a material guide hole 11 in the connecting frame 10, the discharge of crushed materials is effectively guided. Combined with the combined effects of the buffer plate 83, the rubber pad 84, the shock-absorbing spring 81 and the damper 82, it is possible to prevent crushed materials from splashing upward to damage the equipment and injure personnel. By designing the core barrel 9 and the output end of the motor 5 as a detachable structure, the specifications and materials of the core barrel 9 can be flexibly adjusted or replaced according to the needs of different geotechnical engineering survey operations.

[0029] See also Figure 3 The baffle plate 7 and the buffer plate 83 are both provided with through holes 85, and one side of the connecting mechanism 12 passes through the through hole 85; by providing the through hole 85, the output end of the motor 5 can pass through without affecting the rotation of the core barrel 9 driven by the motor 5.

[0030] See also Figure 4The connecting mechanism 12 includes a connecting shaft 121, which is fixedly connected to the output end of the motor 5. A cross slot 122 is provided inside the connecting shaft 121, and a cross rod 123 is inserted inside the cross slot 122. The bottom end of the cross rod 123 is fixedly connected to the top end of the connecting frame 10. First positioning holes 125 are provided on both sides of the cross rod 123, and a first positioning rod 124 is inserted inside the first positioning hole 125. A driving assembly 126 is provided on both sides of the connecting shaft 121. The first positioning rod 124 is connected to the first positioning hole 124 through the driving assembly 126. 5 is fixedly connected; by setting the connecting mechanism 12, a cross groove 122 is provided in the connecting shaft 121, a cross rod 123 is inserted in the cross groove 122, and the cross rod 123 is fixed on the connecting frame 10. The cross-shaped structure facilitates the connecting shaft 121 to drive the connecting frame 10 to rotate after being subjected to force, so that the connecting frame 10 drives the coring barrel 9 to rotate to perform the coring work, and a first positioning rod 124 and a first positioning hole 125 are provided, so that the cross rod 123 is connected and fixed with the cross groove 122, so that the driving shaft is fixed to the connecting frame 10, and the coring barrel 9 is prevented from falling from the output end of the motor 5.

[0031] See also Figure 4 The driving assembly 126 includes a first slide groove 1261, the first slide groove 1261 is opened inside the connecting shaft 121, the first slide groove 1261 is slidably connected to the first slider 1262, the first slider 1262 is fixedly connected to the first positioning rod 124, a return spring 1263 is fixedly connected between the first slider 1262 and the first slide groove 1261, and two return springs 1263 are provided, and a steel wire rope 1264 is fixedly connected between the two return springs 1263 on the first slider 1262, and the steel wire rope 1264 is fixedly connected to the first slider 1262. A handle 1265 is fixedly connected to the side 64 away from the first slider 1262, and the handle 1265 is fixedly connected to the baffle plate 7 through the rotating mechanism 13; by setting the driving component 126, the handle 1265 drives the wire rope 1264 to move, so that the wire rope 1264 drives the first slider 1262 to slide in the first slide groove 1261, and the first slider 1262 drives the first positioning rod 124 to move away from the first positioning hole 125, so that the cross rod 123 can be separated from the cross groove 122, which is convenient for the staff to operate.

[0032] See also Figure 1 and Figure 4The rotating mechanism 13 includes a circular ring 131, which is rotatably connected to the outer side of the baffle plate 7. Both sides of the circular ring 131 are fixedly connected with mounting blocks 132, and the mounting blocks 132 are located above the handle 1265. A fixing component 134 is provided on the mounting block 132, and the handle 1265 is fixedly connected to the mounting block 132 through the fixing component 134. A guide sleeve 133 is fixedly connected to one side of the mounting block 132, and one side of the wire rope 1264 slides through the guide sleeve 133. By setting the rotating mechanism 13, when the core barrel 9 rotates, the circular ring 131 rotates on the guide plate, the circular ring 131 drives the mounting block 132 to move, and the mounting block 132 drives the fixing component 134 for fixing the wire rope 1264 to rotate, so that the wire rope 1264 can maintain its original position and rotate without affecting the operation of the core barrel 9.

[0033] See also Figure 4 The fixing assembly 134 includes a second slide groove 1341, the second slide groove 1341 is provided on the mounting block 132, the second slide groove 1341 is internally slidably connected to a second slider 1342, the second slide groove 1341 is internally rotatably connected to a screw rod 1343, the second slider 1342 is threadedly connected to the screw rod 1343, one end of the second slider 1342 is fixedly connected to a second positioning rod 1344 on both sides, the handle 1265 is provided with a second positioning hole 1345, the second positioning rod 1344 is One side is movably connected with the second positioning hole 1345; by setting a fixing component 134, the screw 1343 is rotated to drive the second slider 1342 to slide in the second slide groove 1341, so that the second slider 1342 drives the second positioning rod 1344 to move, and the second positioning rod 1344 is inserted into the second positioning hole 1345 of the handle 1265, and the handle 1265 is fixed to prevent the handle 1265 from loosening and causing the core barrel 9 to separate from the output end of the motor 5, thereby providing a guarantee for the stable installation of the core barrel 9.

[0034] See also Figure 8 The pushing assembly 14 includes a second cylinder 141, which is fixedly connected to the inside of the cross rod 123, and a pushing plate 142 is fixedly connected to the output end of the second cylinder 141. A storage hole 144 is provided at the bottom of the cross rod 123, and the pushing plate 142 is movably connected to the storage hole 144. Both sides of the top of the pushing plate 142 are fixedly connected to guide rods 143, and the guide rods 143 are slidably connected to the cross rod 123; by setting the pushing assembly 14, the second cylinder 141 drives the pushing plate 142 to move, and the pushing plate 142 is used to push the material inside the coring tube 9, and a storage hole 144 is provided to store the hidden pushing plate 142, so as to facilitate the coring operation.

[0035] The working principle of the present invention is as follows: the first cylinder 3 drives the mounting seat 4 to move, the mounting seat 4 drives the motor 5 to move, the motor 5 drives the coring barrel 9 to move, and the motor 5 drives the coring barrel 9 to rotate to carry out soil excavation. When the coring barrel 9 rotates, since the steel wire rope 1264 is fixed on the mounting block 132, and the circular ring 131 connected to the mounting block 132 rotates on the material baffle plate 7, the rotation of the coring barrel 9 is not affected, thereby ensuring that the coring device is neat and orderly. During the soil excavation process, the debris can be splashed out from the guide hole 11 in the connecting frame 10, and then, under the coordinated action of multiple shock-absorbing springs 81 and high-performance damper 82, the buffer plate 83 is further subjected to shock-absorbing treatment. Since the buffer plate 83 is cleverly arranged in the internal space of the material baffle plate 7, such a layout can not only effectively prevent the debris from splashing upward, thereby avoiding potential damage to the coring device and the operator, but also reduce the debris from condensing into blocks inside the coring barrel 9, which can significantly reduce the subsequent cleaning work. The difficulty and time cost make the entire coring operation process smoother and more efficient. When the coring barrel 9 needs to be replaced, the screw 1343 is rotated to make the screw 1343 drive the second slider 1342 to slide in the second slide groove 1341, so that the second slider 1342 drives the second positioning rod 1344 to move away from the second positioning hole 1345 on the handle 1265, and then the handle 1265 is pulled, and the handle 1265 drives the wire rope 1264 to move, so that the wire rope 1264 drives the first slider 1262 to slide in the first slide groove 1261, so that the first slider 1262 drives the first positioning rod 124 to move away from the first positioning hole 125, so that the cross rod 123 can be separated from the cross groove 122, and at this time the connecting frame 10 can be separated from the connecting shaft 121, so that the coring barrel 9 can be removed from the output end of the motor 5, and the coring barrel 9 of different specifications and materials can be flexibly adjusted or replaced according to the specific needs of different geotechnical engineering survey operations.

Claims

1. A rock coring device for geotechnical engineering investigation, characterized in that: The invention comprises a supporting leg (1), the top end of the supporting leg (1) is fixedly connected to a mounting frame (2), the top end of the mounting frame (2) is fixedly connected to a first cylinder (3), the output end of the first cylinder (3) is fixedly connected to a mounting seat (4), the bottom end of the mounting seat (4) is fixedly connected to a motor (5), both sides of the mounting seat (4) are fixedly connected to connecting rods (6), the side of the connecting rod (6) away from the mounting seat (4) is fixedly connected to a material baffle plate (7), the inner side of the material baffle plate (7) is provided with a buffer assembly (8), and the motor (5) The output end of the motor (5) is provided with a connecting mechanism (12), the output end of the motor (5) is connected to a core-taking barrel (9) through the connecting mechanism (12), one side of the core-taking barrel (9) is fixedly connected to a connecting frame (10), a material guide hole (11) is provided inside the connecting frame (10), and a plurality of material guide holes (11) are provided, a rotating mechanism (13) is provided on the side of the baffle plate (7) close to the connecting rod (6), a material pusher assembly (14) is provided inside the connecting frame (10), and one side of the material pusher assembly (14) is movably connected to the inside of the core-taking barrel (9); The buffer assembly (8) comprises a shock absorbing spring (81), the shock absorbing spring (81) is fixedly connected inside the material baffle plate (7), and a plurality of shock absorbing springs (81) are provided; a damper (82) is fixedly connected inside the shock absorbing spring (81) in the material baffle plate (7); a common end of the shock absorbing spring (81) and the damper (82) is fixedly connected to a buffer plate (83); and a rubber cushion (84) is adhered to a side of the buffer plate (83) away from the material baffle plate (7).

2. A rock coring device for geotechnical engineering investigation according to claim 1, characterized in that: The material blocking plate (7) and the buffer plate (83) are both provided with through holes (85) inside, and one side of the connecting mechanism (12) passes through the through hole (85).

3. A rock coring device for geotechnical engineering investigation according to claim 1, characterized in that: The connecting mechanism (12) comprises a connecting shaft (121), the connecting shaft (121) is fixedly connected to the output end of the motor (5), a cross slot (122) is provided inside the connecting shaft (121), a cross rod (123) is inserted inside the cross slot (122), the bottom end of the cross rod (123) is fixedly connected to the top end of the connecting frame (10), first positioning holes (125) are provided on both sides of the cross rod (123), a first positioning rod (124) is inserted inside the first positioning hole (125), a driving assembly (126) is provided on both sides of the connecting shaft (121), and the first positioning rod (124) is fixedly connected to the first positioning hole (125) through the driving assembly (126).

4. A rock coring device for geotechnical engineering investigation according to claim 3, characterized in that: The driving component (126) includes a first slide groove (1261), the first slide groove (1261) is opened inside the connecting shaft (121), the first slide groove (1261) is slidably connected to the inside of the first slide groove (1261) is fixedly connected to the first positioning rod (124), a return spring (1263) is fixedly connected between the first slide groove (1262) and the first slide groove (1261), and two return springs (1263) are provided.

5. A rock coring device for geotechnical engineering investigation according to claim 4, characterized in that: A steel wire rope (1264) is fixedly connected to the first slider (1262) between the two return springs (1263); a handle (1265) is fixedly connected to the side of the steel wire rope (1264) away from the first slider (1262); and the handle (1265) is fixedly connected to the material blocking plate (7) via a rotating mechanism (13).

6. A rock coring device for geotechnical engineering investigation according to claim 5, characterized in that: The rotating mechanism (13) comprises a circular ring (131), the circular ring (131) is rotatably connected to the outer side of the baffle plate (7), both sides of the circular ring (131) are fixedly connected with mounting blocks (132), and the mounting blocks (132) are located above the handle (1265), and a fixing assembly (134) is provided on the mounting block (132), and the handle (1265) is fixedly connected to the mounting block (132) via the fixing assembly (134).

7. A rock coring device for geotechnical engineering investigation according to claim 6, characterized in that: One side of the mounting block (132) is fixedly connected to a guide sleeve (133), and one side of the steel wire rope (1264) slides through the guide sleeve (133).

8. A rock coring device for geotechnical engineering investigation according to claim 6, characterized in that: The fixing assembly (134) includes a second slide groove (1341), the second slide groove (1341) is provided on the mounting block (132), the second slide groove (1341) is internally slidably connected to a second slider (1342), the second slide groove (1341) is internally rotatably connected to a screw rod (1343), the second slider (1342) is threadedly connected to the screw rod (1343), one end of the second slider (1342) is fixedly connected to a second positioning rod (1344) on both sides, the handle (1265) is provided with a second positioning hole (1345), and one side of the second positioning rod (1344) is movably connected to the second positioning hole (1345).

9. A rock coring device for geotechnical engineering investigation according to claim 8, characterized in that: The pusher assembly (14) comprises a second cylinder (141), the second cylinder (141) is fixedly connected to the inside of the cross rod (123), the output end of the second cylinder (141) is fixedly connected to a pusher plate (142), a receiving hole (144) is provided at the bottom of the cross rod (123), the pusher plate (142) is movably connected to the receiving hole (144), both sides of the top end of the pusher plate (142) are fixedly connected to guide rods (143), and the guide rods (143) are slidably connected to the cross rod (123).

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