A rock sampling device for geotechnical engineering

Abstract

The present invention relates to the field of rock sampling technology, and specifically to a rock sampling device for geotechnical engineering. It comprises a connecting part and a drill barrel assembly, wherein the connecting part comprises a connecting barrel, a connecting prism is fixedly arranged at the upper end of the connecting barrel, the connecting barrel is a hollow structure and the lower end is fixedly connected to the drill barrel assembly, and the drill barrel assembly comprises a driving assembly and a cutting assembly, wherein the driving assembly is fixedly arranged at the upper end of the drill barrel assembly, and the cutting assembly is slidably arranged at the lower end of the drill barrel assembly. By setting the cutting assembly, grooving of rock samples can be achieved, which is beneficial to breaking the rock samples and thus achieving the integrity of the rock samples. At the same time, the cutting assembly can provide space for breaking the rock samples and prevent interference with the tilting movement of the drill barrel body; by setting the driving assembly, the movement of the cutting assembly can be automatically driven, the structure is simple and the cost is low, and the rotation of the drill barrel body is not affected.

Description

Technical Field

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

[0002] In geotechnical engineering, rocks are usually sampled for research. Generally, the current geological environment is analyzed by studying rock samples in different geological environments. Therefore, rock samples need to be collected. In the process of collecting rock samples, the collection depth is usually relatively large. The rock samples drilled by the existing sampling device are not convenient to cut and remove from the borehole. Especially in the case of relatively deep drilling, the rock samples are prone to fracture and are inconvenient to remove. Therefore, a rock sampling device for geological environment is proposed.

[0003] Therefore, a rock sampling device for geotechnical engineering is needed to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and to design a rock sampling device for geotechnical engineering.

[0005] The present invention provides a rock sampling device for geotechnical engineering, comprising a connecting part and a drill barrel assembly, wherein the connecting part comprises a connecting barrel, a connecting prism is fixedly arranged at the upper end of the connecting barrel, the connecting barrel is a hollow structure and the lower end is fixedly connected to the drill barrel assembly, the drill barrel assembly comprises a driving assembly and a cutting assembly, the driving assembly is fixedly arranged at the upper end of the drill barrel assembly, and the cutting assembly is slidably arranged at the lower end of the drill barrel assembly. By setting the cutting assembly, the rock sample can be grooved, so that the rock sample can be kept intact and taken out.

[0006] Further, the drill barrel assembly includes a drill barrel body, a plurality of limit frames are radially arranged at the lower end of the drill barrel body, a cutting assembly is radially slidably arranged in the limit frame, the cutting assembly includes a cutting body, a cutting tooth is arranged at the lower end of the cutting body, side limit blocks are symmetrically arranged on the left and right sides of the cutting body, a moving groove is arranged between the side limit blocks and the cutting body, a moving bar is slidably arranged in the moving groove, side bars are symmetrically arranged on both sides of the lower end of the moving bar, the side bars are slidably arranged in the moving groove, a sliding column is arranged on the side away from each other of the two side bars, and the sliding column is arranged in the sliding groove of the side limit block, the sliding groove includes an inclined sliding groove, the inclined sliding groove is connected with an upper limit groove, the lower end of the inclined sliding groove is connected with a lower limit groove, the upper limit groove and the lower limit groove are both arranged vertically, and the end of the inclined sliding groove close to the axis of the drill barrel body is higher than the end away from the axis of the drill barrel body. The setting of the upper limit groove and the lower limit groove can limit the cutting body to prevent the cutting body from moving during operation.

[0007] Furthermore, a cavity is vertically arranged on one side of the cutting body close to the axis of the drill tube body, the cavity is rectangular, a cutting tooth is slidably arranged in the cavity, a second spring is fixedly arranged on the upper end of the cutting tooth, and the upper end of the second spring is fixedly connected to the inner wall of the upper end of the cavity. The arrangement of the cavity and the second spring provides space for the axial movement of the cutting tooth, preventing the cutting tooth from moving up and down during operation.

[0008] Furthermore, the cutting components are evenly distributed circumferentially at the lower end of the drill barrel body, and the number of the cutting components is set to ten.

[0009] Furthermore, the movable bar is vertically slidably arranged in the guide bar, and the guide bar is circumferentially evenly distributed on the outer wall of the drill barrel body. Through grooves are arranged on both sides of the lower end of the guide bar, and the side bars are slidably connected in the through grooves. A connecting shaft is arranged at the top of the movable bar, and the connecting shaft is connected to the driving assembly.

[0010] Furthermore, the driving assembly includes a driving cylinder, a moving disc is vertically slidably connected to the driving cylinder, a spring 1 is fixedly connected between the upper side of the moving disc and the inner wall of the driving cylinder, a plurality of driving ear plates are evenly distributed circumferentially on the upper side of the moving disc, the driving ear plates are evenly distributed on the outside of the spring 1 and penetrate the upper side of the driving cylinder, a fixing pin is provided on the upper end of the driving ear plate, the fixing pin is slidably set in the waist-shaped hole 2 of the driving rod, the middle part of the driving rod is hinged to the fixing ear plate through the fixing pin, the fixing ear plate is fixedly set on the upper surface of the driving cylinder, a waist-shaped hole 1 is provided at one end of the driving rod away from the waist-shaped hole 2, and the connecting shaft is slidably connected in the waist-shaped hole 1. The moving disc can drive multiple driving rods to move at the same time, thereby being able to control the movement of multiple cutting components at the same time, with a simple structure and improved cutting efficiency.

[0011] Furthermore, the outer circumference of the lower side of the moving disk is provided with a flange 1, the inner side of the flange 1 is provided with an inner buckle ring, the upper side of the inner buckle ring is rotatably connected with an outer buckle ring, the outer buckle ring is fixedly connected to the rotating disk through flange 2, an extrusion cylinder is provided at the center of the rotating disk, the top of the extrusion cylinder is abutted with a thrust bearing, and the thrust bearing is provided in the mounting ring at the center of the moving disk. The provision of the thrust bearing can facilitate the relative rotation of the rock sample to the moving disk, and prevent the rock sample and the moving disk from direct contact, which may cause wear and damage to the moving disk.

[0012] The beneficial effect of the present invention is that: by setting the cutting assembly, the rock sample can be cut, which is conducive to breaking the rock sample and thus realizing the integrity of the rock sample. At the same time, the cutting teeth at the lower end of the cutting assembly can cut an inclined space between the outer side of the drill barrel body and the rock, providing space for breaking the rock sample. The contraction of the cutting assembly toward the axis of the drill barrel body can prevent interference with the tilting movement of the drill barrel body.

[0013] By setting the driving component, the movement of the cutting component can be automatically driven, the structure is simple and the cost is low, and the rotation of the drill tube body is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the drill barrel assembly of the present invention;

[0017] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the driving component of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the drill barrel assembly of the present invention;

[0021] Figure 7 This is a schematic diagram of the explosion structure of the drill barrel assembly of the present invention;

[0022] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at B in the middle;

[0023] Fig. 9 For the present invention Figure 7 Schematic diagram of the structure at C in the middle;

[0024] Fig.10 It is a schematic diagram of the structure of the cutting component of the present invention.

[0025] Reference numerals:

[0026] 1 connecting part, 11 connecting prism, 12 connecting cylinder;

[0027] 2 drill barrel assembly, 21 drill barrel body, 22 moving bar, 221 connecting shaft, 222 side bar, 223 sliding column, 23 guide bar, 231 through groove, 24 limiting frame;

[0028] 3 driving assembly, 31 driving cylinder, 32 driving ear plate, 33 driving rod, 331 waist-shaped hole 1, 332 waist-shaped hole 2, 34 fixing ear plate, 35 fixing pin, 36 moving disc, 361 flange 1, 362 inner buckle ring, 363 mounting ring, 37 rotating disc, 371 flange 2, 372 outer buckle ring, 373 extrusion cylinder, 38 thrust bearing, 39 spring 1;

[0029] 4 cutting assembly, 41 cutting body, 42 side limit block, 421 moving groove, 43 inclined slide groove, 431 lower limit groove, 432 upper limit groove, 44 cutting tooth, 45 cavity, 46 cutting tooth, 47 spring two. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings. Figures 1 to 10 As shown, the present invention provides a rock sampling device for geotechnical engineering, comprising a connecting part 1 and a drill barrel assembly 2, wherein the connecting part 1 comprises a connecting barrel 12, wherein a connecting prism 11 is fixedly arranged at the upper end of the connecting barrel 12, wherein the connecting barrel 12 is a hollow structure and the lower end is fixedly connected to the drill barrel assembly 2, wherein the drill barrel assembly 2 comprises a driving assembly 3 and a cutting assembly 4, wherein the driving assembly 3 is fixedly arranged at the upper end of the drill barrel assembly 2, and the cutting assembly 4 is slidably arranged at the lower end of the drill barrel assembly 2. By setting the cutting assembly 4, the rock sample can be grooved, so that the rock sample can be kept intact and taken out.

[0031] For further information, see Figure 7-Figure 10The drill barrel assembly 2 includes a drill barrel body 21, a plurality of limit frames 24 are radially arranged at the lower end of the drill barrel body 21, a cutting assembly 4 is radially slidably arranged in the limit frame 24, the cutting assembly 4 includes a cutting body 41, a cutting tooth 44 is arranged at the lower end of the cutting body 41, side limit blocks 42 are symmetrically arranged on the left and right sides of the cutting body 41, a moving groove 421 is arranged between the side limit blocks 42 and the cutting body 41, a moving bar 22 is slidably arranged in the moving groove 421, and side bars 22 are symmetrically arranged on both sides of the lower end of the moving bar 22 2. The side strip 222 is slidably arranged in the moving groove 421. A sliding column 223 is arranged on the side where the two side strips 222 are away from each other. The sliding column 223 is arranged in the sliding groove of the side limit block 42. The sliding groove includes an inclined sliding groove 43. The inclined sliding groove 43 is connected to an upper limit groove 432. The lower end of the inclined sliding groove 43 is connected to a lower limit groove 431. The upper limit groove 432 and the lower limit groove 431 are both arranged vertically. The end of the inclined sliding groove 43 close to the axis of the drill barrel body 21 is higher than the end away from the axis of the drill barrel body 21. The setting of the upper limit groove 432 and the lower limit groove 431 can limit the cutting body 41 to prevent the cutting body 41 from moving during operation.

[0032] Furthermore, a cavity 45 is vertically provided on one side of the cutting body 41 close to the axis of the drill tube body 21. The cavity 45 is rectangular. A cutting tooth 46 is slidably provided in the cavity 45. A second spring 47 is fixedly provided on the upper end of the cutting tooth 46. The upper end of the second spring 47 is fixedly connected to the inner wall of the upper end of the cavity 45. The arrangement of the cavity 45 and the second spring 47 provides space for the axial movement of the cutting tooth 46, and prevents the cutting tooth 46 from moving up and down when working.

[0033] Furthermore, the cutting components 4 are evenly distributed circumferentially at the lower end of the drill pipe body 21, and the number of the cutting components 4 is set to ten.

[0034] During operation, the connection part 1 is connected to the driving part of the drilling machine, and is used to drive the drill barrel assembly 2 to rotate through the connection part 1 to realize the drilling function.

[0035] When drilling starts, the moving bar 22 is at the uppermost end, and the sliding column 223 at the lower end of the moving bar 22 is in the upper limit groove 432, which is used to limit the cutting assembly 4 from being away from the axis of the drill barrel body 21. At this time, the cutting teeth 46 of the cutting assembly 4 are retracted in the limit frame 24, and the cutting teeth 46 do not contact the rock sample.

[0036] When the drilling is about to be completed, the rock sample will contact the driving assembly 3, and the drill barrel assembly 2 is driven by the drilling machine to keep rotating and feeding forward. The driving assembly 3 drives the moving bar 22 to move downward, and the moving bar 22 drives the sliding column 223 to move from the upper limit groove 432 to the lower limit groove 431 through the inclined slide groove 43. In this process, the cutting assembly 4 will be driven to approach the axis of the drill barrel body 21. In this process, the cutting teeth 46 will contact the rock sample, thereby realizing the grooving of the rock sample. Since the drill barrel assembly 2 is always in a rotating and forward feeding state during the grooving process, and the cutting teeth 46 are restricted by the rock sample and cannot be fed forward, the cutting teeth 46 will move upward in the cavity 45 of the cutting assembly 4, thereby not affecting the feeding movement of the drill barrel assembly 2.

[0037] When the cutting tooth 46 completes the cutting, the slide column 223 of the movable bar 22 slides in the lower limit groove 431, radially limiting the cutting assembly 4, and the cutting tooth 46 is engaged in the cutting groove to restrict the rock sample in the drill barrel assembly 2. At the same time, the drilling machine drives the drill barrel assembly 2 to tilt or vibrate to break the rock sample, thereby obtaining a complete rock sample.

[0038] During the drilling process, the cutting teeth 44 at the lower end of the cutting assembly 4 will cut the outer periphery of the drill barrel body 21, so that there is space between the drill barrel body 21 and the rock, and the drill barrel body 21 does not contact the rock on the outside. At the same time, after the drilling is completed, the cutting assembly 4 will shrink inward, so that the drill barrel body 21 has space for tilting or vibration, thereby achieving the smooth breaking of the rock sample.

[0039] Furthermore, the movable bar 22 is vertically slidably arranged in the guide bar 23, and the guide bar 23 is evenly distributed circumferentially on the outer wall of the drill tube body 21. Through grooves 231 are arranged on both sides of the lower end of the guide bar 23, and the side bars 222 are slidably connected in the through grooves 231. A connecting shaft 221 is arranged at the top of the movable bar 22, and the connecting shaft 221 is connected to the driving assembly 3.

[0040] For further information, see Figure 3-Figure 5The driving assembly 3 includes a driving cylinder 31, in which a moving disk 36 is vertically slidably connected, a spring 39 is fixedly connected between the upper side of the moving disk 36 and the inner wall of the driving cylinder 31, a plurality of driving ear plates 32 are evenly distributed circumferentially on the upper side of the moving disk 36, the driving ear plates 32 are evenly distributed on the outside of the spring 39 and penetrate the upper side of the driving cylinder 31, a fixing pin 35 is provided on the upper end of the driving ear plate 32, the fixing pin 35 is slidably set in the waist-shaped hole 2 332 of the driving rod 33, the middle part of the driving rod 33 is hinged to the fixing ear plate 34 through the fixing pin 35, the fixing ear plate 34 is fixedly set on the upper surface of the driving cylinder 31, a waist-shaped hole 1 331 is provided at one end of the driving rod 33 away from the waist-shaped hole 2 332, and the connecting shaft 221 is slidably connected in the waist-shaped hole 1 331. The movable disc 36 can drive a plurality of driving rods 33 to move at the same time, thereby being able to control the movement of a plurality of cutting assemblies 4 at the same time, with a simple structure and improved cutting efficiency.

[0041] For further information, see Figure 5 The outer periphery of the lower side of the moving disk 36 is provided with a flange 1 361, the inner side of the flange 1 361 is provided with an inner buckle ring 362, the upper side of the inner buckle ring 362 is rotatably connected with an outer buckle ring 372, the outer buckle ring 372 is fixedly connected to the rotating disk 37 through the flange 2 371, and the center of the rotating disk 37 is provided with an extrusion cylinder 373, the top of the extrusion cylinder 373 is abutted with a thrust bearing 38, and the thrust bearing 38 is arranged in the mounting ring 363 at the center of the moving disk 36. The provision of the thrust bearing 38 can facilitate the relative rotation of the rock sample to the moving disk 36, and prevent the rock sample and the moving disk 36 from direct contact, which causes wear and damage to the moving disk 36.

[0042] At the beginning of operation, spring 1 39 squeezes the moving disc 36 to the lowest end, and the moving disc 36 drives the driving rod 33 to rotate through the driving ear plate 32. The driving rod 33 rotates around the fixing pin 35 of the fixing ear plate 34, thereby driving the moving bar 22 to the highest end. At this time, the moving bar 22 drives the cutting assembly 4 away from the axis of the drill barrel body 21.

[0043] When the drilling reaches the end, the rock sample in the drill barrel body 21 contacts the rotating disk 37, and the rotating disk 37 rotates relative to the drill barrel body 21 following the rock sample. At the same time, the rock sample squeezes the rotating disk 37 and the movable disk 36, so that the movable disk 36 squeezes the spring 39 and moves upward. The driving ear plate 32 on the movable disk 36 drives the driving rod 33 to rotate in the opposite direction around the fixed pin 35 of the fixed ear plate 34, and then the driving rod 33 drives the movable bar 22 to move downward, and the movable bar 22 drives the cutting assembly 4 to move toward the axis of the drill barrel body 21 to achieve grooving of the rock sample. Finally, the drilling machinery drives the drill barrel assembly 2 to vibrate or tilt, so as to break and remove the rock sample.

[0044] The beneficial effect of the present invention is that, through the setting of the cutting assembly 4, the rock sample can be cut, which is conducive to breaking the rock sample and thus achieving the integrity of the rock sample. At the same time, the cutting teeth 44 at the lower end of the cutting assembly 4 can cut an inclined space between the outer side of the drill barrel body 21 and the rock, providing space for breaking the rock sample. The contraction of the cutting assembly 4 toward the axis of the drill barrel body 21 can prevent interference with the tilting movement of the drill barrel body 21.

[0045] By setting the driving assembly 3, the movement of the cutting assembly 4 can be automatically driven, the structure is simple and the cost is low, and the rotation of the drill tube body 21 is not affected.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rock sampling device for geotechnical engineering, comprising a connecting portion (1) and a drill barrel assembly (2), wherein the connecting portion (1) comprises a connecting barrel (12), a connecting prism (11) being fixedly arranged at the upper end of the connecting barrel (12), and characterized in that: The connecting tube (12) is a hollow structure and the lower end is fixedly connected to the drill barrel assembly (2); the drill barrel assembly (2) comprises a driving assembly (3) and a cutting assembly (4); the driving assembly (3) is fixedly arranged at the upper end of the drill barrel assembly (2), and the cutting assembly (4) is slidably arranged at the lower end of the drill barrel assembly (2); The drill barrel assembly (2) comprises a drill barrel body (21), a plurality of limit frames (24) are radially arranged at the lower end of the drill barrel body (21), a cutting assembly (4) is radially slidably arranged in the limit frames (24), the cutting assembly (4) comprises a cutting body (41), a cutting tooth (44) is arranged at the lower end of the cutting body (41), side limit blocks (42) are symmetrically arranged on the left and right sides of the cutting body (41), a moving groove (421) is arranged between the side limit blocks (42) and the cutting body (41), a moving bar (22) is slidably arranged in the moving groove (421), and side bars (42) are symmetrically arranged on the lower ends of the moving bar (22). 222), the side strip (222) is slidably arranged in the movable groove (421), a sliding column (223) is arranged on the side of the two side strips (222) away from each other, the sliding column (223) is arranged in the sliding groove of the side limit block (42), the sliding groove includes an inclined sliding groove (43), the inclined sliding groove (43) is connected to an upper limit groove (432), the lower end of the inclined sliding groove (43) is connected to a lower limit groove (431), the upper limit groove (432) and the lower limit groove (431) are both arranged vertically, and an end of the inclined sliding groove (43) close to the axis of the drill barrel body (21) is higher than an end away from the axis of the drill barrel body (21); A cavity (45) is vertically arranged on one side of the cutting body (41) close to the axis of the drill tube body (21); the cavity (45) is rectangular; a cutting tooth (46) is slidably arranged in the cavity (45); a second spring (47) is fixedly arranged at the upper end of the cutting tooth (46); the upper end of the second spring (47) is fixedly connected to the inner wall of the upper end of the cavity (45); The moving bar (22) is vertically slidably arranged in the guide bar (23), the guide bar (23) is evenly distributed circumferentially on the outer wall of the drill tube body (21), through grooves (231) are arranged on both sides of the lower end of the guide bar (23), and the side bars (222) are slidably connected in the through grooves (231), and a connecting shaft (221) is arranged at the top end of the moving bar (22), and the connecting shaft (221) is connected to the driving assembly (3); The driving assembly (3) comprises a driving cylinder (31), a moving disk (36) being vertically slidably connected inside the driving cylinder (31), a spring (39) being fixedly connected between the upper side of the moving disk (36) and the inner wall of the driving cylinder (31), a plurality of driving ear plates (32) being evenly distributed in the circumferential direction on the upper side of the moving disk (36), the driving ear plates (32) being evenly distributed on the outer side of the spring (39) and penetrating the upper side of the driving cylinder (31), and a spring (39) being provided at the upper end of the driving ear plate (32). A fixing pin (35) is provided, and the fixing pin (35) is slidably arranged in the second waist-shaped hole (332) of the driving rod (33). The middle part of the driving rod (33) is hinged to the fixing ear plate (34) through the fixing pin (35). The fixing ear plate (34) is fixedly arranged on the upper surface of the driving cylinder (31). The end of the driving rod (33) away from the second waist-shaped hole (332) is provided with a first waist-shaped hole (331), and the connecting shaft (221) is slidably connected in the first waist-shaped hole (331).

2. A rock sampling device for geotechnical engineering according to claim 1, characterized in that: The cutting components (4) are evenly distributed in the circumferential direction at the lower end of the drill tube body (21), and the number of the cutting components (4) is set to ten.

3. A rock sampling device for geotechnical engineering according to claim 2, characterized in that: The outer periphery of the lower side of the movable disc (36) is provided with a flange 1 (361), the inner side of the flange 1 (361) is provided with an inner buckle ring (362), the upper side of the inner buckle ring (362) is rotatably connected with an outer buckle ring (372), the outer buckle ring (372) is fixedly connected to the rotating disc (37) via flange 2 (371), an extrusion cylinder (373) is provided at the center of the rotating disc (37), the top of the extrusion cylinder (373) is abutted against a thrust bearing (38), and the thrust bearing (38) is arranged in a mounting ring (363) at the center of the movable disc (36).

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