Engineering geological exploration drilling machine

Abstract

The utility model relates to the technical field of engineering geological exploration, in particular to an engineering geological exploration drilling machine which comprises a vehicle body, a mast, a standard penetration device used for measuring the physical property of a soil layer, a power head device used for driving a drill rod and a guide mechanism used for guiding the drill rod. The mast comprises a main mast and an auxiliary mast, and the auxiliary mast is telescopically arranged in the main mast; the main mast is rotatably connected to the front end of the vehicle body, and the standard penetration device and the power head device are slidably connected to the front side of the main mast; a hoisting mechanism for hoisting the standard penetration device is arranged at the top of the auxiliary mast; and the guide mechanism is fixedly arranged at the bottom of the main mast.

Description

Technical Field

[0001] This utility model relates to the field of engineering geological exploration technology, and in particular to an engineering geological exploration drilling rig. Background Technology

[0002] Exploration drilling rigs are key equipment in the field of engineering geological exploration. Their main function is to obtain underground rock, soil, mineral, or water samples through drilling and to collect stratigraphic information to provide scientific basis for various projects. For example, by obtaining rock and soil samples at different depths through drilling, the distribution, lithology, thickness, and physical and mechanical properties of strata can be determined, geological structures such as faults, fissures, and karst caves can be identified, and their impact on the stability of engineering projects (such as bridges and tunnels) can be assessed.

[0003] Existing hydraulic engineering exploration drilling rigs typically use masts of fixed height. High masts are usually inconvenient for transportation, while short masts can affect drilling efficiency due to the limited range of motion of the power head.

[0004] During drilling, borehole guidance is needed to improve the quality of the opening. Existing borehole guidance devices are not adjustable and cannot meet the guiding function for small-sized drill pipes. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides an engineering geological exploration drilling rig, which solves the technical problems that a fixed-height mast cannot meet the usage requirements and the guide device cannot be adjusted.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] An engineering geological exploration drilling rig includes a vehicle body, a mast, a standard penetration test device for determining the physical properties of soil layers, a power head device for driving the drill rod, and a guide mechanism for guiding the drill rod.

[0010] The mast includes a main mast and a secondary mast, wherein the secondary mast is retractably mounted inside the main mast;

[0011] The main mast is rotatably connected to the front end of the vehicle body, and the standard penetration test device and the power head device are slidably connected to the front side of the main mast; the top of the auxiliary mast is provided with a hoisting mechanism for lifting the standard penetration test device;

[0012] The guide mechanism is fixedly installed at the bottom of the main mast.

[0013] It also includes a movable connector and a feed cylinder. The movable connector is slidably connected to the front side of the main mast, and the feed cylinder is disposed inside the main mast. The drive end of the feed cylinder is connected to the movable connector to drive the movable connector to rise or fall along the main mast.

[0014] The movable connector is detachably connected to the submast. If the movable connector is fixed to the lower end of the submast, the feed cylinder will drive the movable connector and the submast to rise or fall simultaneously.

[0015] The main mast has locking connection holes on its side for fixing the auxiliary mast.

[0016] The hoisting mechanism includes a hydraulic winch located on the upper rear side of the main mast, a gooseneck pulley located at the top of the auxiliary mast, and a steel wire rope;

[0017] One end of the wire rope is connected to the hydraulic winch, and the other end of the wire rope passes around the gooseneck pulley and connects to the standard penetration device.

[0018] The guiding mechanism includes a guide base with a through hole and a guide liner detachably disposed in the through hole of the guide base. The guide liner has an annular structure and is snapped into the through hole of the guide base.

[0019] The power head device includes a power head for driving the drill pipe to rotate, a chuck mechanism for connecting the drill pipe, and a chuck cylinder for driving the chuck mechanism to clamp or release the drill pipe.

[0020] The chuck cylinder is connected to both sides of the power head;

[0021] The power head is slidably connected to the front side of the movable connector. The movable connector has a translation cylinder in the middle that drives in the horizontal direction. The driving end of the translation cylinder is connected to the power head.

[0022] The chuck mechanism includes a rotating flange, a limiting sleeve, and a housing arranged sequentially from top to bottom;

[0023] The rotating flange is connected to the lower end of the power head, and the rotating flange is fixedly connected to the limiting sleeve;

[0024] The drive end of the chuck cylinder is connected to the housing, and a tapered sleeve is provided inside the housing, with the tapered sleeve rotatably connected to the housing;

[0025] The rotating flange, the limiting sleeve, and the tapered sleeve are dynamically connected to the drill pipe.

[0026] The inner diameter of the conical sleeve gradually increases from top to bottom; the inner side of the conical sleeve is provided with multiple locking blocks, which are slidably connected to the inner wall of the conical sleeve; adjacent locking blocks are connected by spring steel wires.

[0027] The lower end of the limiting sleeve passes through the conical sleeve, and the side wall of the limiting sleeve is provided with multiple through grooves, through which the locking block passes.

[0028] The top of the guide mechanism is also provided with a back clamp device, which includes a back clamp seat, clamp body and clamping cylinder. The back clamp seat is fixedly connected to the main mast, and the two clamp bodies are rotatably connected to the front end of the back clamp seat.

[0029] The two clamp bodies are also provided with slips on opposite sides. The slips are telescopically disposed in the clamp bodies. The drive end of the clamping cylinder is connected to the slips to drive the slips to clamp or release the drill rod.

[0030] The standard penetration test device includes a standard penetration test base, a standard penetration test swing arm, and a standard penetration tester. The left and right sides of the standard penetration test base are provided with sliders, which are rotatably connected to the standard penetration test base and slidably connected to the main mast.

[0031] The standard penetration tester is fixed to the front side of the standard penetration tester base. One end of the standard penetration tester swing arm is detachably connected to the standard penetration tester, and the other end of the standard penetration tester swing arm is rotatably connected to the main mast.

[0032] (III) Beneficial Effects

[0033] The beneficial effects of this utility model are as follows: This utility model provides an engineering geological exploration drilling rig with an adjustable mast height. When the standard penetration test (SPT) device lowers the probe to a low position, the SPT device can be lifted upwards via a steel wire rope connected to the top of the mast. This facilitates the addition of a probe to the SPT device, meeting the requirements for high-altitude hoisting of the SPT device and enabling the SPT device to reach deeper soil layers and obtain deeper soil samples and penetration data.

[0034] By setting a movable connector, the height of both the submast and the power head unit can be adjusted simultaneously. Only one drive device is needed to adjust both the extension and retraction height of the submast and the raising and lowering of the power head unit.

[0035] The lower part of the mast is equipped with a guide mechanism located at the borehole opening. This guide mechanism ensures the drill pipe follows a predetermined trajectory, reducing deviation and improving borehole straightness. The guide mechanism contains a guide liner, which allows adjustment of the through-hole diameter for the drill pipe, making it suitable for ordinary drilling tools with a diameter of 73mm or less. Attached Figure Description

[0036] Figure 1This is a perspective view of the engineering geological exploration drilling rig of this utility model (using a standard penetration test device);

[0037] Figure 2 for Figure 1 A magnified view of the wireframe A in the image;

[0038] Figure 3 This is a perspective view of the engineering geological exploration drilling rig of this utility model (using a power head device);

[0039] Figure 4 for Figure 3 A magnified view of the wireframe at point B in the image;

[0040] Figure 5 for Figure 3 A magnified view of the wireframe at point C in the image;

[0041] Figure 6 This is an enlarged view of the slider of this utility model (in a rotating state);

[0042] Figure 7 This is a perspective view of the power head, chuck mechanism, and chuck cylinder of this utility model;

[0043] Figure 8 This is a cross-sectional view of the chuck mechanism of this utility model.

[0044] Figure 9 This is a top view of the back clamp device of this utility model.

[0045] [Explanation of Labels in the Attached Image]

[0046] 1: Vehicle body; 11: Control console; 12: Powertrain; 13: Drill rod box; 14: Radiator; 15: Outriggers;

[0047] 2: Mast; 21: Main mast; 22: Secondary mast; 23: Mast base; 24: Lifting hydraulic cylinder; 25: Hydraulic winch; 26: Gooseneck pulley; 27: First locking connection hole; 28: Second locking connection hole; 29: Mast support;

[0048] 3: Standard penetration test device; 31: Standard penetration test base; 32: Standard penetration test swing arm; 33: Standard penetration test instrument; 34: Sliding block; 35: Mounting slot; 36: Pin; 37: Lifting ring;

[0049] 4: Drill pipe;

[0050] 5: Power head assembly; 51: Translation cylinder; 52: Power head; 521: Main spindle; 53: Chuck mechanism; 54: Chuck cylinder; 55: Pin;

[0051] 531: Housing; 532: Tapered sleeve; 533: Clamping block; 534: Upper bearing cover; 535: Lower bearing cover; 536: First bearing; 537: Second bearing; 538: Rotary flange; 539: Limiting sleeve;

[0052] 6: Guide mechanism; 61: Guide base; 62: Guide liner;

[0053] 7: Back clamp device; 71: Back clamp seat; 72: Clamp body; 73: Clamping cylinder; 74: Locking slip; 75: Connecting plate;

[0054] 8: Movable connectors;

[0055] 9: Feed into the hydraulic cylinder. Detailed Implementation

[0056] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "front," "rear," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0057] This utility model provides an engineering geological exploration drilling rig, including a telescopic mast 2, a standard penetration test device 3 for measuring the physical properties of soil layers, a power head device 5 for driving the drill rod 4, and a guide mechanism 6 for guiding and positioning the drill rod 4, wherein the guide mechanism 6 is provided with a detachable guide liner 62.

[0058] By setting up a telescopic mast 2, the length of the drilling equipment during transport can be shortened, while the overall height of the mast 2 can be extended during use to meet the hoisting requirements of the standard penetration test device 3.

[0059] By setting a guide liner 62 inside the through hole of the guide mechanism 6, the diameter of the through hole can be adjusted, so that the guide mechanism 6 can be used with ordinary drilling tools with a diameter of less than or equal to 73mm, thereby enabling the drilling rig to meet more construction needs.

[0060] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0061] See appendix Figure 1This utility model provides an engineering geological exploration drilling rig, including a vehicle body 1, a mast 2 rotatably connected to the front end of the vehicle body 1, a standard penetration test (SPT) device 3 for measuring the physical properties of soil layers slidably connected to the mast 2, a power head device 5 for driving a drill rod 4 slidably connected to the mast 2, and a guide mechanism 6 for guiding and positioning the drill rod 4. The mast 2 includes a main mast 21 and a secondary mast 22. The main mast 21 is rotatably connected to the front end of the vehicle body 1, and the main mast 21 and secondary mast 22 are slidably connected. By setting the slidable main mast 21 and secondary mast 22, the need for adding probes to boreholes with greater depths can be met. The SPT device 3 is rotatably connected to the main mast 21. When the power head device 5 drives the drill rod 4 for drilling, the SPT device 3 can rotate to one side of the main mast 21 to avoid obstructing the power head device 5 from driving the drill rod 4. The guide mechanism 6 is located at the borehole opening to ensure that the drill rod 4 drills along a predetermined trajectory, reducing deviation and improving the straightness of the borehole. The power head device 5 is connected to the drill rod 4 through a chuck connection structure, which makes the drill rod 4 less prone to loosening during drilling.

[0062] The vehicle body 1 adopts a tracked chassis. The top of the vehicle body 1 is equipped with a powertrain 12 and a control console 11. The powertrain 12 includes an engine and a hydraulic station assembly, which serves as the energy device for the drilling rig and provides power to the drilling equipment. The control console 11 is used to operate all components of the drilling rig.

[0063] The mast 2 includes a main mast 21 and a secondary mast 22. The main mast 21 has a rectangular columnar frame structure with a through-mount cavity in its middle, which is located along the length of the main mast 21. The secondary mast 22 is slidably connected within the mounting cavity. The length of the secondary mast 22 is less than that of the main mast 21. After sliding to a preset position, the secondary mast 22 can be fixed to the main mast 21 by a locking pin. When the drilling rig is in the moving state, the secondary mast 22 can retract into the main mast 21, shortening the overall length of the drilling rig during movement. When the drilling rig is in use, the secondary mast 22 can extend out of the main mast 21, extending the overall height of the mast 2, thereby meeting the requirements for high-altitude hoisting of the standard penetration device 3 on the mast 2.

[0064] The main mast 21 is rotatably connected to the front end of the vehicle body 1 via a mast base 23. The mast base 23 is a triangular support and is used to mount the mast 2 and the lifting hydraulic cylinder 24, as well as to bear the mast load. The bottom of the mast base 23 is fixedly mounted on the top of the front end of the vehicle body 1. The main mast 21 is hinged to the top of the mast base 23 and connected to the lifting hydraulic cylinder 24. The lifting hydraulic cylinder 24 is used to drive the main mast 21 to rotate from a horizontal position to a vertical position or from a vertical position to a horizontal position. A mast bracket 29 is also provided at the top of the rear end of the vehicle body 1. The mast bracket 29 is used to support the upper end of the mast 2 when the mast 2 is lowered and the equipment is in a moving state.

[0065] When the drilling rig is in the moving state, the lifting hydraulic cylinder 24 drives the main mast 21 to rotate and lower onto the top of the vehicle body 1, facilitating the movement and transportation of the drilling rig. When the drilling rig is in the operating state, the lifting hydraulic cylinder 24 drives the main mast 21 to rotate from the top of the vehicle body 1 to a vertical position, in conjunction with the standard penetration device 3 and the power head device 5.

[0066] A hydraulic winch 25 is provided on the upper rear side of the main mast 21, and a gooseneck pulley 26 is provided on the top of the auxiliary mast 22. One end of the hydraulic winch 25 is connected to a steel wire rope, and the other end of the steel wire rope passes around the gooseneck pulley 26 and is connected to the standard penetration device 3. The hydraulic winch 25 drives the steel wire rope to pull the standard penetration device 3 up or down along the mast 2.

[0067] See appendix Figure 2 It also includes a movable connector 8 that is slidably connected to the front side of the main mast 21 and a feed cylinder 9 for driving the movable connector 8. The feed cylinder 9 is located in the mounting cavity of the main mast 21, and the drive end of the feed cylinder 9 is connected to the movable connector 8 to drive the movable connector 8 to rise or fall.

[0068] The movable connector 8 is detachably fixed to the auxiliary mast 22. The movable connector 8 is fixedly connected to the lower end of the auxiliary mast 22 via a pin 55. When the feed cylinder 9 moves the movable connector 8, it simultaneously moves the auxiliary mast 22 connected to the movable connector 8 up or down, thereby causing the auxiliary mast 22 to extend or retract from the top of the main mast 21. After sliding to a preset position, the auxiliary mast 22 is fixed to the main mast 21 by a locking pin. Through the combination of the movable connector 8 and the auxiliary mast 22, the feed cylinder 9 can simultaneously move the power head 52 and the auxiliary mast 22.

[0069] The main mast 21 has a first locking connection hole 27 and a second locking connection hole 28 on its side for fixing the auxiliary mast 22. When the auxiliary mast 22 slides to the first locking connection hole 27 or the second locking connection hole 28, a locking pin is inserted into the first locking connection hole 27 or the second locking connection hole 28 to fix the auxiliary mast 22 inside the main mast 21, and the pin shaft 55 is disassembled, so that the movable connector 8 is disconnected from the auxiliary mast 22 without hindering the subsequent use of the power head 52. The telescopic auxiliary mast 22, in cooperation with the gooseneck pulley 26 at the top of the auxiliary mast 22, can meet the needs of high-altitude hoisting of the standard penetration device 3.

[0070] See appendix Figure 3-4The power head device 5 is used to drive the drill pipe 4. The power head device 5 includes a power head 52, a chuck mechanism 53, and a chuck cylinder 54. The power head 52 is slidably connected to the front side of the movable connector 8. The movable connector 8 has a horizontally driven translation cylinder 51 in its middle. The driving end of the translation cylinder 51 is connected to the power head 52. By setting the translation cylinder 51, the power head 52 is driven to move along the horizontal direction of the movable connector 8. When using the standard penetration test device 3, the centerline position of the mast 2 can be made available for the standard penetration test device 3, avoiding obstruction to the use of the standard penetration test device 3.

[0071] See appendix Figure 7-8 The power head 52 includes a spindle 521, which is connected to the drill rod 4 and serves as the output end to drive the drill rod 4 to rotate. The spindle 521 is a hollow structure that allows the drill rod 4 to be inserted internally. The drill rod 4 can pass through the spindle 521, allowing the chuck mechanism 53 to be engaged at any height of the drill rod 4. The lower end of the spindle 521 is provided with an external spline for connecting the chuck mechanism 53.

[0072] The chuck mechanism 53 includes, from top to bottom, a rotary flange 538, a limiting sleeve 539, an upper bearing cover 534, a housing 531, and a lower bearing cover 535. The rotary flange 538 has a through hole in its center for inserting a spindle 521. The inner wall of the through hole has an internal spline. The external spline at the lower end of the spindle 521 is inserted into the rotary flange 538 and locked in place. The rotary flange 538 is bolted to the limiting sleeve 539, which is rotatably connected to the upper bearing cover 534. The upper bearing cover 534 and the lower bearing cover 535 are fixedly installed at the upper and lower ends of the housing 531, respectively. The upper bearing cover 534 and the lower bearing cover 535 have through holes in their centers for the drill rod 4 to pass through.

[0073] Between the upper bearing cover 534 and the lower bearing cover 535, a first bearing 536, a tapered sleeve 532 and a second bearing 537 are arranged sequentially from top to bottom. The first bearing 536, the tapered sleeve 532 and the second bearing 537 are located inside the housing 531. When the power head 52 drives the drill rod 4 to rotate, the rotating flange 538, the limiting sleeve 539 and the tapered sleeve 532 rotate simultaneously with the drill rod 4.

[0074] The inner diameter of the tapered sleeve 532 gradually increases from top to bottom. Multiple locking blocks 533 are provided on the inner side of the tapered sleeve 532, and these blocks 533 are slidably connected to the inner wall of the tapered sleeve 532. The outer diameter of the locking blocks 533 also gradually increases from top to bottom, facilitating sliding and releasing the drill rod 4. Spring steel wires connect adjacent locking blocks 533, and these spring steel wires are used to reset the locking blocks 533.

[0075] The lower end of the limiting sleeve 539 passes through the tapered sleeve 532. The side wall of the limiting sleeve 539 is provided with multiple through slots, and the locking block 533 passes through the through slots and contacts the drill rod 4. The limiting sleeve 539 is used to limit the locking block 533, so that the locking block 533 is kept inside the tapered sleeve 532 and can move relative to the inner wall of the tapered sleeve 532.

[0076] The chuck cylinder 54 is connected to both sides of the power head 52. The connecting end of the chuck cylinder 54 is connected to the power head 52, and the driving end of the chuck cylinder 54 is connected to the housing 531. When the driving end of the chuck cylinder 54 extends, it pushes the housing 531 downward, causing the inner tapered sleeve 532 to move downward. Through the tapered inner wall of the tapered sleeve 532, the locking block 533 is driven to clamp the drill rod 4 inward. When the driving end of the chuck cylinder 54 retracts, it causes the housing 531 to move upward. The housing 531 then causes the inner tapered sleeve 532 to move upward, relieving the force on the locking block 533. Under the tension of the spring steel wire, the locking block 533 moves outward, releasing the drill rod 4.

[0077] When connecting the drill rod 4 using the chuck mechanism 53, the top end of the drill rod 4 passes through the chuck mechanism 53 and inserts into the spindle 521, and the chuck mechanism 53 is driven by the chuck cylinder 54 to clamp the drill rod 4. When driving the drill rod 4 using the power head 52, the spindle 521 drives the drill rod 4, rotating flange 538, limit sleeve 539, tapered sleeve 532, and chuck block 533 to rotate simultaneously. Through the cooperation between the chuck mechanism 53 and the spindle 521, when connecting the drill rod 4, the drill rod 4 is inserted into the spindle 521, and the chuck mechanism 53 can be locked in any position on the drill rod, providing greater flexibility and meeting the needs of various drilling processes. In addition, by connecting the drill rod 4 through the chuck-type connection structure, the slurry tap can be directly connected to the top of the drill rod 4, unlike the top-drive power head where the mud travels from the tap through the power head to the drill rod, reducing the transition in the power head and simplifying the sealing structure.

[0078] See appendix Figure 2 The guide mechanism 6 is fixedly installed at the bottom of the main mast 21 and serves as a guide during the drilling of the drill rod 4. The guide mechanism 6 includes a guide base 61 with a through hole and a guide liner 62 detachably installed within the through hole of the guide base 61. The guide liner 62 has a ring structure. In this embodiment, the guide liner 62 is fitted and snapped into the through hole of the guide base 61. By setting the guide liner 62, the guide mechanism 6 can be adapted to various drill rods 4 and drill bits. When the drill rod 4 is connected to a spiral drill bit for drilling, the guide base 61 directly guides the drill rod 4, allowing the spiral drill bit to pass through the through hole of the guide base 61. When using ordinary drilling tools with a diameter of 73mm or less, the guide liner 62 is fitted inside the through hole of the guide base 61, allowing the guide mechanism 6 to guide the small-diameter drill rod 4.

[0079] The guide mechanism 6 is also equipped with a back clamp device 7 at its top. The back clamp device 7 is fixedly mounted at the bottom of the main mast 21 and is used to clamp the drill pipe 4. See Appendix Figure 9 The back clamp device 7 includes a back clamp seat 71, clamp body 72 and clamping cylinder 73. The back clamp seat 71 is fixedly connected to the bottom of the main mast 21. The two clamp bodies 72 are rotatably connected to the back clamp seat 71 through a rotating shaft. The clamp bodies 72 are connected to the front end of the back clamp seat 71.

[0080] The back clamp device 7 also includes a connecting plate 75, which is used to connect the back clamp seat 71 and the main mast 21. The back clamp seat 71 is fixed to the front side of the connecting plate 75, and the connecting plate 75 is fixedly connected to the main mast 21 by bolts. By setting the connecting plate 75 to connect the main mast 21, it is convenient to disassemble and maintain the back clamp device 7.

[0081] When the two clamps 72 are closed, there is a through hole between their inner sides for the drill rod 4 to pass through. The two clamps 72 are also provided with slips 74 on their opposite sides. The slips 74 are telescopically installed inside the clamps 72. The slips 74 are connected to the drive end of the clamping cylinder 73. The clamping cylinder 73 drives the slips 74 to clamp the drill rod 4.

[0082] When the back clamp device 7 is in operation, the left and right clamps 72 are closed (not rotated). The clamping cylinder 73 drives the slips 74 to open and close, thereby clamping and releasing the drill rod 4. When the borehole requires a large-diameter auger drill bit, the left and right clamps 72 can also be rotated open around the pivot to allow the auger drill rod to pass through.

[0083] The back clamp device 7 can be used in conjunction with the chuck mechanism 53. After the slips 74 clamp the drill rod 4, the chuck cylinder 54 pushes the housing 531 downward to release the drill rod 4. Since the drill rod 4 cannot rotate when the slips 74 clamps it, the back clamp device 7 can also cooperate with the power head 52 to uncouple adjacent drill rods 4. That is, the slips 74 clamp the lower section of the drill rod 4, and the power head 52 drives the upper section of the drill rod 4 to rotate, thereby uncoupling the upper and lower sections of the drill rod 4.

[0084] See appendix Figure 5 The standard penetration test (SPT) device 3 is used to obtain soil samples, measure penetration resistance, assess soil properties, determine foundation bearing capacity, monitor soil changes, and assist in engineering design, providing key data support for geotechnical engineering. The SPT device 3 is slidably connected to the front side of the main mast 21. The SPT device 3 includes a SPT base 31, a SPT swing arm 32, and a SPT device 33. The SPT device 33 is fixed to the side of the SPT base 31 that is not adjacent to the main mast 21. Sliders 34 are provided on the left and right sides of the SPT base 31, and the sliders 34 are rotatably connected to the SPT base 31. The SPT base 31 is clamped to both sides of the main mast 21 by the sliders 34 on both sides of the SPT base 31, allowing the SPT base 31 to slide along the main mast 21.

[0085] See appendix Figure 6 The standard penetration test base 31 has mounting slots 35 on its left and right sides respectively. One end of the slider 34 is rotatably connected to the mounting slot 35 via a pivot. The top of the standard penetration test base 31 is provided with a pin 36 for fixing the slider 34. The pin 36 is inserted into the slider 34, so that the slider 34 can be fixed relative to the standard penetration test base 31, so that the standard penetration test base 31 can slide along the main mast 21.

[0086] The standard penetration test (SPT) arm 32 is rotatably connected to the main mast 21, and the SPT arm 32 is connected to the SPT device 33 via a pin. When using the power head device 5, the SPT device 3 needs to be moved from the centerline of the main mast 21 to one side of the main mast 21. The SPT arm 32 rotates horizontally, causing the SPT device 33 and the SPT base 31 to rotate to one side of the main mast 21. When the SPT device 33 needs to be used, the SPT arm 32 moves the SPT device 33 and the SPT base 31 to the front of the main mast 21, and the slider 34 is installed. Then, the pin connecting the SPT arm 32 to the SPT device 33 is removed, allowing the SPT base 31 to slide the SPT device 33 along the main mast 21.

[0087] The top of the standard penetration tester 33 is equipped with a lifting ring 37, which is used to connect the steel wire rope. When the standard penetration tester 33 drives the probe to a low position, the steel wire rope can be pulled by the hydraulic winch 25 to lift the standard penetration tester 33 upward, so that a probe can be attached to the bottom of the standard penetration tester 33, enabling the standard penetration tester 33 to reach deeper soil layers and obtain deeper soil samples and penetration data.

[0088] The top of the vehicle body 1 is equipped with a drill rod box 13 and a radiator 14. The drill rod box 13 is used to store the drill rod 4, which facilitates the installation and use of the drill rod 4. The radiator 14 is used to dissipate heat for the hydraulic system.

[0089] The front end of the vehicle body 1 is provided with a support leg 15, which is rotatably connected to the vehicle body 1. By setting the support leg 15, the stability of the equipment operation can be enhanced and the equipment can be leveled.

[0090] This utility model provides an engineering geological exploration drilling rig with an adjustable mast 2. When the standard penetration test device 3 lowers the probe to a low position, the standard penetration test device 3 can be lifted upwards by the steel wire rope connected to the top of the mast 2. This facilitates the addition of a probe to the standard penetration test device 33, meeting the requirements for high-altitude hoisting of the standard penetration test device 3, enabling the standard penetration test device to reach deeper soil layers and obtain deeper soil samples and penetration data.

[0091] By setting the movable connector 8, the height of the auxiliary mast 22 and the power head device 5 can be adjusted simultaneously. Only one drive device is needed to adjust both the extension and retraction height of the auxiliary mast 22 and the lifting and lowering of the power head device 5.

[0092] A guide mechanism 6 is provided at the lower part of the mast 2. The guide mechanism 6 is located at the borehole opening. By setting the guide mechanism 6, the drill rod 4 can be ensured to drill along a predetermined trajectory, reducing deviation and improving the straightness of the borehole. The guide mechanism 6 is provided with a guide liner 62. By setting the guide liner 62, the diameter of the through hole through which the guide mechanism 6 passes the drill rod 4 can be adjusted, so that the guide mechanism 6 can be used with ordinary drilling tools with a diameter of less than or equal to 73mm.

[0093] The standard penetration test device 3 is rotatably connected to the mast 2. When the power head device 5 is used to drive the drill rod 4 for drilling, the standard penetration test device 3 can rotate horizontally to one side of the main mast 21 to avoid obstructing the use of the power head device 5.

[0094] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0095] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0096] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0097] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An engineering geological survey drilling rig, characterised in that, The engineering geological survey drilling machine comprises a vehicle body (1), a mast (2), a standard penetration device (3) for measuring physical properties of soil layers, a power head device (5) for driving a drill rod (4), and a guide mechanism (6) for guiding the drill rod (4). The mast (2) comprises a main mast (21) and a sub-mast (22), and the sub-mast (22) is telescopically arranged in the main mast (21). The main mast (21) is rotationally connected to the front end of the vehicle body (1), and the standard penetration device (3) and the power head device (5) are slidingly connected to the front side of the main mast (21). The guide mechanism (6) is fixedly arranged at the bottom of the main mast (21).

2. The engineering geological survey drilling machine according to claim 1, further comprising a movable connecting piece (8) and an advancing oil cylinder (9), wherein the movable connecting piece (8) is slidingly connected to the front side of the main mast (21), and the advancing oil cylinder (9) is arranged in the main mast (21), and the driving end of the advancing oil cylinder (9) is connected to the movable connecting piece (8) to drive the movable connecting piece (8) to ascend or descend along the main mast (21).

3. The engineering geological survey drilling machine according to claim 2, wherein the movable connecting piece (8) is detachably connected to the sub-mast (22), and if the movable connecting piece (8) is fixed to the lower end of the sub-mast (22), the advancing oil cylinder (9) drives the movable connecting piece (8) and the sub-mast (22) to ascend or descend simultaneously. The side surface of the main mast (21) is provided with a locking connecting hole for fixing the sub-mast (22).

4. The engineering geological survey drilling machine according to claim 1, wherein the hoisting mechanism comprises a hydraulic winch (25) arranged at the upper rear side of the main mast (21), a goose head pulley (26) arranged at the top of the sub-mast (22), and a steel wire rope. One end of the steel wire rope is connected to the hydraulic winch (25), and the other end of the steel wire rope is connected to the standard penetration device (3) by passing through the goose head pulley (26).

5. The engineering geological survey drilling machine according to claim 1, wherein the guide mechanism (6) comprises a guide base (61) provided with a through hole, and a guide inner liner (62) detachably arranged in the through hole of the guide base (61), the guide inner liner (62) is in an annular structure, and the guide inner liner (62) is clamped in the through hole of the guide base (61).

6. The engineering geological survey drilling machine according to claim 2, wherein the power head device (5) comprises a power head (52) for driving the drill rod (4) to rotate, a chuck mechanism (53) for connecting the drill rod (4), and a chuck oil cylinder (54) for driving the chuck mechanism (53) to clamp or release the drill rod (4). The chuck oil cylinder (54) is connected to the two sides of the power head (52). ​ ​ ​ ​ ​ The power head (52) is slidingly connected to the front side of the movable connecting piece (8), the middle part of the movable connecting piece (8) is provided with a horizontal driving translation oil cylinder (51), and the driving end of the translation oil cylinder (51) is connected with the power head (52).

7. The engineering geological exploration drilling rig according to claim 6, characterized in that, The chuck mechanism (53) comprises a rotating flange (538), a limiting sleeve (539) and a shell (531) arranged in sequence from top to bottom; The rotating flange (538) is connected to the lower end of the power head (52), and the rotating flange (538) is fixedly connected with the limiting sleeve (539); The driving end of the chuck oil cylinder (54) is connected with the shell (531), the shell (531) is provided with a taper sleeve (532), and the taper sleeve (532) is rotatably connected with the shell (531); The rotating flange (538), the limiting sleeve (539) and the taper sleeve (532) are drivingly connected with the drill rod (4).

8. The engineering geological exploration drilling rig according to claim 7, characterized in that, The inner diameter of the taper sleeve (532) gradually increases from top to bottom, the inner side of the taper sleeve (532) is provided with a plurality of clamping blocks (533), the clamping blocks (533) are slidingly connected with the inner wall of the taper sleeve (532), and adjacent clamping blocks (533) are connected through spring wires; The lower end of the limiting sleeve (539) penetrates through the taper sleeve (532), the side wall of the limiting sleeve (539) is provided with a plurality of through grooves, and the clamping blocks (533) penetrate through the through grooves.

9. The engineering geological exploration drilling rig according to claim 5, characterized in that, The top of the guide mechanism (6) is further provided with a back clamp device (7), the back clamp device (7) comprises a back clamp seat (71), a clamp body (72) and a clamping oil cylinder (73), the back clamp seat (71) is fixedly connected with the main mast (21), and two clamp bodies (72) are rotatably connected to the front end of the back clamp seat (71); Opposite sides of the two clamp bodies (72) are further provided with slips (74), the slips (74) are telescopically arranged in the clamp bodies (72), and the driving end of the clamping oil cylinder (73) is connected with the slips (74) to drive the slips (74) to clamp or release the drill rod (4).

10. The engineering geological exploration drilling rig according to claim 1, characterized in that, The marker driving device (3) comprises a marker driving base (31), a marker driving swing arm (32) and a marker driver (33), the left and right sides of the marker driving base (31) are provided with sliding blocks (34), the sliding blocks (34) are rotatably connected with the marker driving base (31), and the sliding blocks (34) are slidingly connected with the main mast (21); The marker driver (33) is fixed to the front side of the marker driving base (31), one end of the marker driving swing arm (32) is detachably connected with the marker driver (33), and the other end of the marker driving swing arm (32) is rotatably connected with the main mast (21).

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