Drilling equipment for geotechnical engineering investigation and operating method thereof

Abstract

The present invention discloses a drilling device for geotechnical engineering survey and an operating method thereof, and relates to the field of geotechnical engineering technology. The present invention comprises a bracket, the top of which is fixedly connected to a driving member 1, the output shaft of which is fixedly connected to a threaded rod, the outer wall of which is threadedly connected to a threaded sleeve, the side of which is slidably connected to the inner wall of the bracket, and the top of which is fixedly connected to a driving member 2. The present invention cooperates with a movable ring, a connecting ring, an L-shaped plate, a fixed block, an elastic telescopic rod, a fixed ring, an elastic telescopic disc, a connecting plate, a back pressure plate, a long groove, and a clamping rod, so that the elastic telescopic disc pushes the connecting plate to move away from the drilling column through its own elastic force, and the movement of the connecting plate drives the back pressure plate to resist the expanding shale formation, thereby avoiding the problem that the expansion of the shale formation will cause the aperture to become smaller, thereby causing the drilling equipment to get stuck.

Description

Technical Field

[0001] The present invention relates to the field of geotechnical engineering technology, in particular to drilling equipment used for geotechnical engineering investigation and an operating method thereof. Background Art

[0002] Drilling equipment for geotechnical engineering surveys is mainly used to obtain the physical properties and engineering characteristics of underground soil and rocks. It can help collect soil and rock samples, measure groundwater levels, evaluate foundation bearing capacity, and provide important data support for engineering design.

[0003] The Chinese patent with patent announcement number CN220791132U discloses a drilling equipment for geotechnical engineering survey, including a base, four columns are fixedly installed on the top surface of the base, and a mounting plate is provided on the side of the four columns close to each other, and a driving member 1 is fixedly installed on the top surface of the mounting plate, and a connecting shaft is fixedly installed on the driving end of the driving member 1. When the driving member 1 drives the connecting shaft and the drill rod body to rotate, the sealing connecting ring will not rotate with the connecting shaft and the drill rod body. At this time, the personnel connects the liquid inlet pipe to the external liquid supply pump, so that the external water enters the interior of the sealing connecting ring through the liquid inlet pipe and enters the interior of the center hole through the gap between the multiple connecting and fixing blocks, thereby facilitating the cooling of the drill rod body during the drilling process. When there is too much water in the center hole, it will overflow through the water outlet hole to cool the outer surface of the drill rod body, thereby improving the cooling efficiency of the drill rod body.

[0004] However, the current drilling equipment has the following problems: when the drilling equipment is drilling into a shale formation, the shale formation will expand after encountering water. The expansion of the shale formation will cause the hole diameter to become smaller, causing the drilling equipment to get stuck. Therefore, we have proposed a drilling equipment for geotechnical engineering survey and its operation method. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a drilling device for geotechnical engineering investigation and an operating method thereof, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a drilling device for geotechnical engineering survey, comprising a bracket, the top of the bracket is fixedly connected to a driving member 1, the output shaft of the driving member 1 is fixedly connected to a threaded rod, the outer wall of the threaded rod is threadedly connected to a threaded sleeve, the side of the threaded sleeve is slidably connected to the inner wall of the bracket, the top of the threaded sleeve is fixedly connected to a driving member 2, the output shaft of the driving member 2 is fixedly connected to a drilling column, the side of the bracket is provided with a control panel for driving the driving member 1 and the driving member 2, the outer wall of the drilling column is provided with a back pressure device, the back pressure device includes a moving ring, the inner wall of the moving ring is slidably connected to On the outer wall of the drilling column, the bottom of the movable ring is rotatably connected to a connecting ring, and the bottom of the connecting ring is fixedly connected to multiple L-shaped plates, and the inner wall sides of multiple L-shaped plates are fixedly connected to fixed blocks, and the bottom of the fixed block is fixedly connected to an elastic telescopic rod, and the bottom of the elastic telescopic rod is fixedly connected to a fixing ring, and the inner wall of the fixing ring is rotatably connected to the outer wall of the drilling column, and the inner wall side of the L-shaped plate is fixedly connected to an elastic telescopic disk, and the telescopic end of the elastic telescopic disk is fixedly connected to the connecting plate, and the side of the connecting plate is fixedly connected to a back pressure plate, and the top of the fixing ring is fixedly connected to a clamping rod, and the top of the clamping rod passes through and slides on the fixed end and the telescopic end of the elastic telescopic disk.

[0007] When the bracket moves to a fixed position, the driving member 1 is then started through the control panel, and the output shaft of the driving member 1 rotates the threaded rod. The rotation of the threaded rod causes the threaded sleeve to move downward along the inner wall of the bracket. The downward movement of the threaded sleeve drives the driving member 2 and the drilling column to move downward. At the same time, the driving member 2 is started through the control panel, and the driving member 2 rotates the drilling column, so that the drilling column drills the shale formation. The downward movement of the drilling column drives the moving ring to move downward, and the downward movement of the moving ring drives the connecting ring to move downward. The downward movement of the connecting ring drives the L-shaped plate to move downward. During the movement of the L-shaped plate, the upper part of the inner wall of the L-shaped plate will contact the ground, thereby stopping the L-shaped plate from moving. The stopping of the L-shaped plate will drive the fixed block to stop moving. Due to the continued movement of the drilling column, the drilling column will drive the fixing ring to move. The movement of the fixing ring will cause the elastic telescopic rod to stretch. At the same time, the movement of the fixing ring will drive the clamping rod away from the elastic telescopic disk. Therefore, the clamping rod will no longer restrict the elastic telescopic disk, and the elastic telescopic disk will push the connecting plate to move away from the drilling column through its own elastic force.

[0008] According to the above technical solution, the back pressure device also includes a conical block, the top of which is fixedly connected to the top of the inner wall of the L-shaped plate. The long groove on the outer wall of the back pressure plate can make the contact pressure between the back pressure plate and the shale formation more uniform.

[0009] According to the above technical solution, a plurality of long grooves are provided on the side of the back pressure plate away from the connecting plate. When the upper inner wall of the L-shaped plate touches the ground, the L-shaped plate drives the conical block to be inserted into the soil.

[0010] The bottom of the threaded sleeve is provided with a notch for the movement of the L-shaped slide plate.

[0011] Before the L-shaped plate contacts the ground, the conical head first contacts the ground. Then, when the L-shaped plate moves downward, the conical head pushes the long column upward through the contact ring. The upward movement of the long column causes the slider on the inner wall of the swivel to move along the arc-shaped track groove, thereby causing the swivel to rotate 90 degrees. The 90-degree rotation of the swivel will drive the elastic telescopic block to rotate 90 degrees. The rotation of the elastic telescopic block will cause the L-shaped push plate to rotate, and the rotation of the L-shaped push plate will push away the soil accumulated on the ground below the L-shaped plate.

[0012] According to the above technical solution, the pushing device also includes several L-shaped dividing knives, and the outer walls of the several L-shaped dividing knives are fixedly connected to the inner wall of the L-shaped push plate. When the L-shaped push plate moves, it will drive the L-shaped dividing knives to move.

[0013] A method for operating the drilling equipment for geotechnical engineering investigation comprises the following steps:

[0014] S1, when the bracket moves to a fixed position;

[0015] S2. Then, the driving member 1 is started through the control panel. The output shaft of the driving member 1 rotates the threaded rod. The rotation of the threaded rod causes the threaded sleeve to move downward along the inner wall of the bracket.

[0016] S3, the threaded sleeve moves downward, driving the second driving member, the drilling column, to move downward;

[0017] S4, simultaneously start the second driving element through the control panel;

[0018] S5. The second driving member rotates the drilling column, thereby causing the drilling column to drill the mud shale formation.

[0019] The present invention provides a drilling device for geotechnical engineering investigation and an operating method thereof. It has the following beneficial effects:

[0020] (1) The present invention cooperates with a movable ring, a connecting ring, an L-shaped plate, a fixed block, an elastic telescopic rod, a fixed ring, an elastic telescopic disc, a connecting plate, a back pressure plate, a long groove, and a clamping rod, so that the elastic telescopic disc pushes the connecting plate to move away from the drilling column through its own elastic force. The movement of the connecting plate drives the back pressure plate to resist the expanding mud shale formation, thereby avoiding the problem of the hole diameter becoming smaller due to the expansion of the mud shale formation, which causes the drilling equipment to get stuck.

[0021] (2) The present invention cooperates with the back pressure plate and the long groove, so that the long groove on the outer wall of the back pressure plate can make the contact pressure between the back pressure plate and the mud shale formation more uniform, avoiding the situation of excessive local pressure; at the same time, through the cooperation of the conical block and the L-shaped plate, when the upper part of the inner wall of the L-shaped plate contacts the ground, the L-shaped plate will drive the conical block to be inserted into the soil, thereby improving the stability of the drilling column in the expanding mud shale formation.

[0022] (3) The present invention cooperates with the L-shaped slide plate, L-shaped block, swivel, long column, arc-shaped track groove, resistance ring, conical head, limit disc, elastic telescopic block, L-shaped push plate and spring, so that the rotation of the L-shaped push plate will push away the soil accumulated on the ground below the L-shaped plate, thereby avoiding the problem that the L-shaped push plate will expand the back pressure plate in advance under the force of the accumulated soil, thereby making it difficult for the back pressure plate to conflict with the expanded mud shale; at the same time, through the cooperation of the L-shaped dividing knife and the L-shaped push plate, the L-shaped push plate will drive the L-shaped dividing knife to move when it moves, and the movement of the L-shaped dividing knife will disperse the soil accumulated on the ground, thereby increasing the pushing speed and avoiding the problem that the soil is difficult to push because it is wet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the present invention as a whole;

[0024] Figure 2 This is a structural diagram of the threaded sleeve plate of the present invention;

[0025] Figure 3 This is a structural diagram of the drilling column of the present invention;

[0026] Figure 4 This is a structural diagram of the fixing ring of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the L-shaped plate of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle;

[0029] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0030] Figure 8 This is a schematic diagram of the structure of the placement plate of the present invention;

[0031] Figure 9 It is a structural schematic diagram of the pushing device of the present invention.

[0032] In the figure: 1. bracket; 2. control panel; 3. driving member 1; 4. threaded rod; 5. threaded sleeve; 6. driving member 2; 7. drilling column; 8. back pressure device; 81. moving ring; 82. connecting ring; 83. L-shaped plate; 84. fixed block; 85. elastic telescopic rod; 86. fixed ring; 87. elastic telescopic disk; 88. connecting plate; 89. back pressure plate; 810. long groove; 811. clamping rod; 812. conical block; 9. pushing device; 91. placing plate; 92. L-shaped slide plate; 93. L-shaped block; 94. swivel; 95. long column; 96. arc track groove; 97. conflict ring; 98. conical head; 99. limiting disc; 910. elastic telescopic block; 911. L-shaped push plate; 912. spring; 913. L-shaped dividing knife. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] See also Figure 1 - Figure 9One embodiment of the present invention is: a drilling device for geotechnical engineering survey, comprising a bracket 1, the top of the bracket 1 is fixedly connected to a driving member 3, the output shaft of the driving member 3 is fixedly connected to a threaded rod 4, the outer wall of the threaded rod 4 is threadedly connected to a threaded sleeve 5, the side of the threaded sleeve 5 is slidably connected to the inner wall of the bracket 1, the top of the threaded sleeve 5 is fixedly connected to a driving member 2 6, the output shaft of the driving member 2 6 is fixedly connected to a drilling column 7, the side of the bracket 1 is provided with a control panel 2 for driving the driving member 1 3 and the driving member 2 6, the outer wall of the drilling column 7 is provided with a back pressure device 8, the back pressure device 8 includes a moving ring 81, the inner wall of the moving ring 81 is slidably connected to the outer wall of the drilling column 7, the bottom of the moving ring 81 is rotatably connected to a connecting ring 82, the bottom of the connecting ring 82 is fixedly connected to a plurality of L-shaped plates 83, and a plurality of L-shaped plates. The inner wall side surfaces of the plate 83 are fixedly connected with a fixed block 84, the bottom of the fixed block 84 is fixedly connected with an elastic telescopic rod 85, the bottom of the elastic telescopic rod 85 is fixedly connected with a fixed ring 86, the inner wall of the fixed ring 86 is rotatably connected to the outer wall of the drilling column 7, the inner wall side surfaces of the L-shaped plate 83 are fixedly connected with an elastic telescopic disk 87, the telescopic end of the elastic telescopic disk 87 is fixedly connected with a connecting plate 88, the side surfaces of the connecting plate 88 are fixedly connected with a back pressure plate 89, the top of the fixing ring 86 is fixedly connected with a clamping rod 811, the top of the clamping rod 811 passes through and slides on the fixed end and the telescopic end of the elastic telescopic disk 87. Through the arrangement of the above structure, the movement of the connecting plate 88 will drive the back pressure plate 89 to resist the expanding shale formation, thereby avoiding the problem that the expansion of the shale formation will cause the aperture to become smaller, thereby causing the drilling equipment to get stuck.

[0035] The back pressure device 8 will include a conical block 812, the top of which is fixedly connected to the top of the inner wall of the L-shaped plate 83. Through the setting of the above structure, the long groove on the outer wall of the back pressure plate 89 can make the contact pressure between the back pressure plate 89 and the mudstone formation more uniform, avoiding the occurrence of excessive local pressure.

[0036] A plurality of long grooves 810 are provided on the side of the back pressure plate 89 away from the connecting plate 88. Through the above-mentioned structural arrangement, the L-shaped plate 83 will drive the conical block 812 to be inserted into the soil, thereby improving the stability of the drilling column 7 in the expanding mud shale formation.

[0037] When in use, when the bracket 1 moves to a fixed position, the control panel 2 is then used to start the driving member 1 3, and the output shaft of the driving member 1 3 causes the threaded rod 4 to rotate. The rotation of the threaded rod 4 causes the threaded sleeve 5 to move downward along the inner wall of the bracket 1, and the threaded sleeve 5 moves downward, driving the driving member 2 6 and the drilling column 7 to move downward. At the same time, the control panel 2 is used to start the driving member 2 6, and the driving member 2 6 causes the drilling column 7 to rotate, so that the drilling column 7 drills the shale formation. The downward movement of the drilling column 7 drives the moving ring 81 to move downward, and the downward movement of the moving ring 81 drives the connecting ring 82 to move downward, and the downward movement of the connecting ring 82 drives the L-shaped plate 83 to move downward. During the movement of the L-shaped plate 83, the upper part of the inner wall of the L-shaped plate 83 will contact the ground, thereby stopping the L-shaped plate 83 from moving. The stopping of the L-shaped plate 83 will drive the fixed block 84 to stop moving. As the drilling column 7 continues to move, the drilling The column 7 will drive the fixing ring 86 to move, and the movement of the fixing ring 86 will stretch the elastic telescopic rod 85. At the same time, the movement of the fixing ring 86 will drive the clamping rod 811 to move away from the elastic telescopic disk 87. Therefore, the clamping rod 811 will no longer restrict the elastic telescopic disk 87. The elastic telescopic disk 87 will push the connecting plate 88 to move away from the drilling column 7 through its own elastic force. The movement of the connecting plate 88 will drive the back pressure plate 89 to resist the expanded mud shale formation, thereby preventing the mud shale formation from expanding and causing the aperture to become smaller, thereby causing the drilling equipment to get stuck; the long groove on the outer wall of the back pressure plate 89 can make the contact pressure between the back pressure plate 89 and the mud shale formation more uniform, avoiding the situation of excessive local pressure; when the upper part of the inner wall of the L-shaped plate 83 contacts the ground, the L-shaped plate 83 will drive the conical block 812 to insert into the soil, thereby improving the stability of the drilling column 7 in the expanded mud shale formation.

[0038] See also Figure 1 - Figure 9On the basis of the above embodiment, in another embodiment of the present invention, a pushing device 9 is provided on the top of the L-shaped plate 83, and the pushing device 9 includes a placing plate 91. The bottom of the placing plate 91 is fixedly connected to the top of the L-shaped plate 83. The side of the placing plate 91 is slidably connected to an L-shaped slide plate 92. The bottom of the L-shaped slide plate 92 is fixedly connected to an L-shaped block 93. The side of the L-shaped block 93 is rotatably connected to a swivel 94. The inner wall of the swivel 94 is rotatably connected to a long column 95. The top of the long column 95 is fixedly connected to a limiting disc 99. A spring 912 is provided between the limiting disc 99 and the L-shaped slide plate 92. The outer wall of the swivel 94 is fixedly connected to an elastic telescopic block 910. The bottom of the telescopic end of the elastic telescopic block 910 is fixedly connected to an L-shaped The push plate 911 and the bottom of the long column 95 are fixedly connected with a resistance ring 97, and the bottom of the resistance ring 97 is fixedly connected with a conical head 98. The outer wall of the long column 95 is provided with an arc-shaped track groove 96, and the inner wall of the limiting disc 99 is fixedly connected with a slider for sliding on the inner wall of the arc-shaped track groove 96. The L-shaped push plate 911 is in contact with the back pressure plate 89, and the bottom of the threaded sleeve 5 is provided with a slot for the movement of the L-shaped slide plate 92. Through the arrangement of the above structure, the rotation of the L-shaped push plate 911 will push away the soil accumulated on the ground below the L-shaped plate 83, and avoid the L-shaped push plate 911 from being subjected to the force of the accumulated soil and causing the back pressure plate 89 to expand in advance, thereby causing the back pressure plate 89 to be difficult to conflict with the expanding mud shale.

[0039] The pushing device 9 also includes several L-shaped dividing knives 913, the outer walls of which are fixedly connected to the inner wall of the L-shaped push plate 911. Through the setting of the above structure, the movement of the L-shaped dividing knives 913 will disperse the soil accumulated on the ground, thereby increasing the pushing speed and avoiding the problem of soil being difficult to push due to moisture.

[0040] When in use, before the L-shaped plate 83 contacts the ground, the conical head 98 first contacts the ground. Then, when the L-shaped plate 83 moves downward, the conical head 98 pushes the long column 95 upward through the contact ring 97. The upward movement of the long column 95 causes the slider on the inner wall of the swivel 94 to move along the arc track groove 96, thereby causing the swivel 94 to rotate 90 degrees. The 90-degree rotation of the swivel 94 drives the elastic telescopic block 910 to rotate 90 degrees. The rotation of the elastic telescopic block 910 causes the L-shaped push plate 911 to rotate The rotation of the L-shaped push plate 911 will push away the soil accumulated on the ground below the L-shaped plate 83, and avoid the problem that the L-shaped push plate 911 will expand the back pressure plate 89 in advance due to the force of the accumulated soil, thereby causing the back pressure plate 89 to be difficult to conflict with the expanded mud shale; when the L-shaped push plate 911 moves, it will drive the L-shaped dividing knife 913 to move, and the movement of the L-shaped dividing knife 913 will disperse the soil accumulated on the ground, thereby increasing the pushing speed and avoiding the problem that the soil is difficult to push due to moisture.

[0041] In addition, the present invention also provides an operating method of a drilling device for geotechnical engineering investigation, comprising the following steps:

[0042] S1, move the bracket 1 to a fixed position and position it;

[0043] S2. Then, the driving member 3 is started through the control panel 2. The output shaft of the driving member 3 rotates the threaded rod 4. The rotation of the threaded rod 4 causes the threaded sleeve 5 to move downward along the inner wall of the bracket 1.

[0044] S3, the threaded sleeve 5 moves downward, driving the second driving member 6 and the drilling column 7 to move downward;

[0045] S4, simultaneously start the driving member 2 6 through the control panel 2;

[0046] S5. The driving member 6 rotates the drilling column 7, thereby causing the drilling column 7 to drill the mud shale formation.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A drilling device for geotechnical engineering investigation, comprising a bracket, a first driver fixedly connected to the top of the bracket, an output shaft of the first driver fixedly connected to a threaded rod, a threaded sleeve threadedly connected to the outer wall of the threaded rod, a side of the threaded sleeve slidably connected to the inner wall of the bracket, a second driver fixedly connected to the top of the threaded sleeve, an output shaft of the second driver fixedly connected to a drilling column, and a control panel for driving the first and second drivers provided on the side of the bracket, characterized in that: The outer wall of the drilling column is provided with a back-pressure device, which includes a movable ring, the inner wall of the movable ring is slidably connected to the outer wall of the drilling column, the bottom of the movable ring is rotatably connected to a connecting ring, the bottom of the connecting ring is fixedly connected to a plurality of L-shaped plates, the inner wall side surfaces of the plurality of L-shaped plates are fixedly connected to fixed blocks, the bottom of the fixed block is fixedly connected to an elastic telescopic rod, the bottom of the elastic telescopic rod is fixedly connected to a fixing ring, the inner wall of the fixing ring is rotatably connected to the outer wall of the drilling column, the inner wall side surface of the L-shaped plate is fixedly connected to an elastic telescopic disk, the telescopic end of the elastic telescopic disk is fixedly connected to the connecting plate, the side surface of the connecting plate is fixedly connected to a back-pressure plate, the top of the fixing ring is fixedly connected to a clamping rod, and the top of the clamping rod passes through and slides between the fixed end and the telescopic end of the elastic telescopic disk; The back pressure device also includes a conical block, the top of which is fixedly connected to the top of the inner wall of the L-shaped plate; A plurality of long grooves are provided on one side of the back pressure plate away from the connecting plate.

2. The drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: The top of the L-shaped plate is provided with a pushing device, which includes a placing plate, the bottom of the placing plate is fixedly connected to the top of the L-shaped plate, the side of the placing plate is slidably connected to the L-shaped slide, the bottom of the L-shaped slide is fixedly connected to the L-shaped block, the side of the L-shaped block is rotatably connected to the swivel, the inner wall of the swivel is rotatably connected to the long column, the top of the long column is fixedly connected to the limiting disk, a spring is provided between the limiting disk and the L-shaped slide, the outer wall of the swivel is fixedly connected to the elastic telescopic block, and the bottom of the telescopic end of the elastic telescopic block is fixedly connected to the L-shaped push plate.

3. The drilling equipment for geotechnical engineering investigation according to claim 2, characterized in that: The pushing device also includes a plurality of L-shaped dividing knives, and the outer walls of the plurality of L-shaped dividing knives are fixedly connected to the inner wall of the L-shaped pushing plate.

4. The drilling equipment for geotechnical engineering investigation according to claim 3, characterized in that: The bottom of the long column is fixedly connected with a resistance ring, and the bottom of the resistance ring is fixedly connected with a conical head.

5. The drilling equipment for geotechnical engineering investigation according to claim 3, characterized in that: An arc-shaped track groove is provided on the outer wall of the long column, and a sliding block for sliding on the inner wall of the arc-shaped track groove is fixedly connected to the inner wall of the limiting disc.

6. The drilling equipment for geotechnical engineering investigation according to claim 3, characterized in that: The L-shaped push plate contacts the counter-pressure plate, and a groove for the L-shaped slide plate to move is provided on the bottom of the threaded sleeve plate.

7. The method for operating a drilling device for geotechnical engineering investigation according to any one of claims 1 to 6, characterized in that: The following steps are included: S1. Move the bracket to a fixed position and position it; S2. Then, the driving member 1 is started through the control panel. The output shaft of the driving member 1 rotates the threaded rod. The rotation of the threaded rod causes the threaded sleeve to move downward along the inner wall of the bracket. S3, the threaded sleeve moves downward, driving the second driving member, the drilling column, to move downward; S4, simultaneously start the second driving element through the control panel; S5. The second driving member rotates the drilling column, thereby causing the drilling column to drill the mud shale formation.

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