Geotechnical engineering investigation drilling hole wall protection device

Abstract

The utility model relates to the technical field of geotechnical drilling, and discloses a geotechnical engineering investigation drilling hole wall protection device which comprises a handle, a first motor, a connecting rod and a drill bit, a protection mechanism is arranged on the connecting rod, and a disassembly and assembly mechanism is arranged between the connecting rod and the drill bit. The dismounting and mounting mechanism comprises a first inserting block fixedly arranged at one end of the drill bit, a second inserting groove is formed in the first inserting block, a clamping groove is formed in the second inserting groove, and a first inserting groove connected with the first inserting block in an inserted mode is formed in one end of the connecting rod. A manual screwing block is rotated to enable a worm to rotate, the worm drives a worm wheel meshed with the worm to rotate, the worm wheel drives a rotating wheel on a rotating rod to rotate, and the rotating wheel rolls a connecting rope when rotating, so that a clamping block is separated from a clamping groove under tension and moves into a containing groove, and at the moment, a drill bit and the connecting rod are disconnected; and the operation is simple and convenient, the replacement efficiency of the drill bit is greatly improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rock and soil drilling, in particular to a rock and soil engineering survey drilling hole wall protection device. Background Art

[0002] Geotechnical engineering drilling is a survey method that uses manpower, machinery and other means to reveal the stratigraphic sequence, geotechnical engineering characteristics, and understand the conditions or characteristics of the strata below the surface at a specific location. Since the borehole wall television can truly and intuitively see the geological phenomena of the borehole wall, it has been widely used in my country's engineering geology and other fields.

[0003] A Chinese patent provides a geotechnical engineering survey drilling hole wall protection device, with publication number CN219910631U, including a handle, the right end of the handle is fixedly connected to a motor, the left end output shaft of the motor is fixedly connected to a compaction mechanism, the left end of the compaction mechanism is fixedly connected to a drill bit, and the left end of the compaction mechanism is fixedly connected to a protection mechanism; the compaction mechanism includes: a connecting rod, the left end output shaft of the motor is fixedly connected to the connecting rod; a rotating rod, the connecting rod is slidably connected to the rotating rod through a slide groove; a fixed block, the upper rear end of the rotating rod is rotatably connected to the fixed block; an arc plate, the top of the fixed block is fixedly connected to the arc plate; and a cylinder, the right end of the connecting rod is fixedly connected to the cylinder.

[0004] The above-mentioned device is provided with a protective mechanism to fix the hole wall, which has the effect of preventing the hole wall from collapsing. However, when the drill bit is damaged and needs to be replaced, the entire device can only be replaced, which greatly increases the production cost of the device, and the operation is cumbersome and complicated, affecting the work efficiency of the geotechnical drilling operation. Therefore, it is necessary to provide a geotechnical engineering survey drilling hole wall protection device. Utility Model Content

[0005] The purpose of the utility model is to provide a geotechnical engineering exploration drilling hole wall protection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a geotechnical engineering exploration drilling hole wall protection device, comprising a handle, a first motor, a connecting rod and a drill bit, wherein the connecting rod is provided with a protection mechanism, and a disassembly mechanism is provided between the connecting rod and the drill bit; the disassembly mechanism comprises a first plug-in block fixedly arranged at one end of the drill bit, a second slot is provided on the first plug-in block, a card slot is provided in the second slot, a first slot is provided at one end of the connecting rod to be plugged into the first plug-in block, a second plug-in block is fixedly provided in the first slot to be plugged into the second slot, and a card slot is provided on the second plug-in block There is a receiving groove, a card block that is slidably connected to the receiving groove and is engaged with the card slot, and a spring that is fixedly connected to the card block is fixedly provided in the receiving groove; a movable cavity is provided on the second plug block, a rotating rod is rotatably provided in the movable cavity, a rotating wheel is fixedly provided on the rotating rod, a connecting rope is fixedly provided on the rotating wheel, the connecting rope passes through the movable cavity and is fixedly connected to the card block, a worm gear is fixedly provided on the rotating rod, a worm that is rotatably connected to the worm gear is rotatably provided in the movable cavity, a groove is provided on the connecting rod, and the worm gear rotatably passes through the movable cavity and extends to the groove and is fixedly connected to a hand-tightening block.

[0007] Preferably, a sealing ring is fixedly provided at one end of the drill bit, and a sealing groove for plugging with the sealing ring is formed at one end of the connecting rod.

[0008] Preferably, limiting blocks are fixedly provided on both sides of the clamping block, limiting grooves adapted to the limiting blocks are opened in the receiving slot, and the limiting blocks are slidably connected to the limiting grooves.

[0009] Preferably, a protective cover hinged to the groove is provided on the connecting rod, and the protective cover is bolted to the connecting rod.

[0010] Preferably, the protective mechanism includes an inner cavity opened in the connecting rod, a bidirectional screw is rotatably arranged in the inner cavity, a driving cavity is opened in the connecting rod, a second motor is fixedly arranged in the driving cavity, and one end of the bidirectional screw rotates through the inner cavity and is fixedly connected to the rotating shaft of the second motor.

[0011] Preferably, both ends of the bidirectional screw rod are threadedly connected to a moving block, four soil pressure plates are provided on the connecting rod, a fixed block is fixed on the soil pressure plate, a connecting hinge rod is hingedly provided between the fixed block and the moving block, and an avoidance groove for avoiding the connecting hinge rod is provided on the connecting rod.

[0012] Preferably, a limiting rod slidably connected to the moving block is fixedly provided in the inner cavity, a heat dissipation hole connected to the driving cavity is opened on the connecting rod, and the four soil pressing plates are evenly arranged on the outside of the connecting rod with the connecting rod as the axis.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1) The geotechnical engineering exploration drilling hole wall protection device rotates the worm by rotating the hand-tightening block in the groove, which drives the worm gear engaged with it to rotate, and the worm gear drives the rotating wheel on the rotating rod to rotate. When the rotating wheel rotates, the connecting rope is reeled in, so that the clamping block is pulled out of the clamping groove and moves into the storage groove. At this time, the drill bit and the connecting rod are disconnected, and the drill bit can be removed and replaced. The operation is simple and convenient, which greatly improves the efficiency of drill bit replacement and extends the service life of the device.

[0015] 2) The geotechnical engineering exploration drilling hole wall protection device retracts the clamping block by rotating the hand-tightening block, and then the first plug-in block on the new drill bit is inserted into the first slot. The sealing ring is then inserted into the sealing groove to improve the sealing between the drill bit and the connecting rod. At the same time, the second plug-in block in the first slot is automatically inserted into the second slot. After that, the hand-tightening block is loosened, and the clamping block automatically pops out of the storage slot under the rebound action of the spring and engages with the clamping slot in the second slot, thereby locking and fixing the new drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a geotechnical engineering exploration drilling hole wall protection device in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the protection mechanism in the embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the drill bit in the embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting rod in the embodiment of the present utility model;

[0020] Figure 5 In the embodiment of the present utility model Figure 4 A magnified view of the structure at point A;

[0021] Figure 6 Schematic diagram of the cross-sectional structure of the connecting rod in the embodiment of the present utility model.

[0022] In the figure: 1. Handle; 2. First motor; 3. Connecting rod; 4. Drill bit; 5. Protective mechanism; 501. Inner cavity; 502. Bidirectional screw; 503. Moving block; 504. Driving cavity; 505. Second motor; 506. Heat dissipation hole; 507. Pressing plate; 508. Fixed block; 509. Limiting rod; 510. Connecting hinge rod; 511. Avoidance groove; 6. Disassembly and assembly mechanism; 601. First plug-in block; 602. Sealing ring; 603, first slot; 604, sealing slot; 605, second slot; 606, card slot; 607, second plug-in block; 608, storage slot; 609, card block; 610, limit block; 611, limit slot; 612, spring; 613, movable chamber; 614, rotating rod; 615, rotating wheel; 616, connecting rope; 617, worm gear; 618, groove; 619, worm; 620, hand-tightening block; 621, protective cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Combine Figures 1-6 A geotechnical engineering exploration drilling hole wall protection device includes a handle 1, a first motor 2, a connecting rod 3 and a drill bit 4, a protection mechanism 5 is provided on the connecting rod 3, and a disassembly mechanism 6 is provided between the connecting rod 3 and the drill bit 4.

[0025] See Figure 2 , it is further obtained that the protective mechanism 5 includes an inner cavity 501 opened in the connecting rod 3, a bidirectional screw rod 502 is rotatably provided in the inner cavity 501, a driving cavity 504 is opened in the connecting rod 3, a second motor 505 is fixedly provided in the driving cavity 504, one end of the bidirectional screw rod 502 rotatably passes through the inner cavity 501 and is fixedly connected to the rotating shaft of the second motor 505, both ends of the bidirectional screw rod 502 are threadedly connected to the moving block 503, and four soil pressing plates 507 are provided on the connecting rod 3. A fixed block 508 is fixed on the soil pressing plate 507, and a connecting hinge 510 is hinged between the fixed block 508 and the movable block 503. An avoidance groove 511 for avoiding the connecting hinge 510 is provided on the connecting rod 3. A limiting rod 509 slidingly connected to the movable block 503 is fixed in the inner cavity 501, and a heat dissipation hole 506 connected to the driving cavity 504 is provided on the connecting rod 3. The four soil pressing plates 507 are evenly arranged around the outside of the connecting rod 3 with the connecting rod 3 as the axis.

[0026] Specifically, by starting the second motor 505 to rotate the bidirectional screw rod 502, the two moving blocks 503 threadedly connected to the two ends of the bidirectional screw rod 502 move toward each other, and then the four soil pressing plates 507 can be pushed outward by the four sets of connecting hinge rods 510 until the soil pressing plates 507 stick to the hole wall and compact the hole wall to prevent the hole wall from collapsing.

[0027] See Figure 3-Figure 6 , it is further obtained that the disassembly and assembly mechanism 6 includes a first plug block 601 fixedly arranged at one end of the drill bit 4, a second slot 605 is provided on the first plug block 601, a card slot 606 is provided in the second slot 605, a first slot 603 is provided at one end of the connecting rod 3 to be plugged into the first plug block 601, a second plug block 607 is fixedly provided in the first slot 603 to be plugged into the second slot 605, a receiving slot 608 is provided on the second plug block 607, a card block 609 is slidably connected to the card slot 606 in the receiving slot 608, and a spring 612 fixedly connected to the card block 609 is fixed in the receiving slot 608; a movable cavity 613 is provided on the second plug block 607, a rotating rod 614 is rotatably provided in the movable cavity 613, a rotating wheel 615 is fixedly provided on the rotating rod 614, and a connecting rope 61 is fixedly provided on the rotating wheel 615 6. The connecting rope 616 passes through the movable cavity 613 and is fixedly connected to the clamping block 609. A worm gear 617 is fixedly provided on the rotating rod 614. A worm 619 is rotatably provided in the movable cavity 613 and meshed with the worm gear 617. A groove 618 is provided on the connecting rod 3. The worm 619 rotatably passes through the movable cavity 613 and extends to the groove 618 and is fixedly connected to a hand-tightening block 620. A sealing ring 602 is fixedly provided at one end of the drill bit 4. A sealing groove 604 is provided at one end of the connecting rod 3 for plugging with the sealing ring 602. Limiting blocks 610 are fixedly provided on both sides of the clamping block 609. A limiting groove 611 adapted to the limiting block 610 is provided in the receiving groove 608. The limiting block 610 is slidably connected to the limiting groove 611. A protective cover 621 hinged to the groove 618 is provided on the connecting rod 3, and the protective cover 621 is bolted to the connecting rod 3.

[0028] Specifically, by rotating the hand-tightening block 620 in the groove 618, the worm 619 is rotated, and the worm 619 drives the worm wheel 617 engaged therewith to rotate, and the worm wheel 617 drives the rotating wheel 615 on the rotating rod 614 to rotate. When the rotating wheel 615 rotates, the connecting rope 616 is wound up, so that the clamping block 609 is pulled out of the clamping groove 606 and moves into the storage groove 608. At this time, the drill bit 4 is disconnected from the connecting rod 3, and the drill bit 4 can be removed and replaced. The operation is simple and convenient, which greatly improves the replacement efficiency of the drill bit 4 and extends the service life of the device. The clamping block 609 is retracted by rotating the hand-tightening block 620, and then the first inserting block 601 on the new drill bit 4 is inserted into the first slot 603, and the sealing ring 602 is inserted into the sealing groove 604 to improve the sealing between the drill bit 4 and the connecting rod 3. At the same time, the second inserting block 607 in the first slot 603 is automatically inserted into the second slot 605. Then, the hand-tightening block 620 is released, and the clamping block 609 automatically pops out of the receiving slot 608 under the rebound action of the spring 612 and engages with the clamping slot 606 in the second slot 605, thereby locking and fixing the new drill bit 4.

[0029] During actual operation, after the device is placed in the working area, the first motor 2 is started, the first motor 2 drives the connecting rod 3 to rotate, the connecting rod 3 drives the drill bit 4 to rotate, and the drill bit 4 drills the required hole area. During the drilling process, the first motor 2 can be stopped and the second motor 505 can be started to rotate the bidirectional screw rod 502, so that the two moving blocks 503 threadedly connected to the two ends of the bidirectional screw rod 502 move toward each other, and then the four soil pressing plates 507 can be pushed outward by the four sets of connecting hinge rods 510 until the soil pressing plates 507 stick to the hole wall and compact the hole wall to prevent the hole wall from collapsing.

[0030] When the drill bit 4 needs to be replaced, the bolts on the protective cover 621 are first removed, the protective cover 621 is opened, and the hand-tightening block 620 in the groove 618 is rotated to rotate the worm 619. The worm 619 drives the worm gear 617 engaged therewith to rotate, and the worm gear 617 drives the rotating wheel 615 on the rotating rod 614 to rotate. When the rotating wheel 615 rotates, it reels the connecting rope 616, so that the clamping block 609 is pulled out of the clamping groove 606 and moves into the receiving groove 608. At this time, the drill bit 4 is disconnected from the connecting rod 3, and the drill bit 4 can be removed and replaced.

[0031] When installing a new drill bit 4, turn the hand-tightening block 620 again to retract the clamping block 609, then insert the first plug block 601 on the new drill bit 4 into the first slot 603, and the sealing ring 602 is inserted into the sealing groove 604 to improve the sealing between the drill bit 4 and the connecting rod 3. At the same time, the second plug block 607 in the first slot 603 is automatically inserted into the second slot 605. Then, loosen the hand-tightening block 620, and the clamping block 609 automatically pops out of the storage slot 608 under the rebound action of the spring 612 and engages with the clamping slot 606 in the second slot 605, thereby locking and fixing the new drill bit 4. Then cover the protective cover 621 and fix it with bolts to complete the replacement of the drill bit 4.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geotechnical engineering exploration drilling hole wall protection device, comprising a handle (1), a first motor (2), a connecting rod (3) and a drill bit (4), characterized in that: A protection mechanism (5) is provided on the connecting rod (3), and a disassembly mechanism (6) is provided between the connecting rod (3) and the drill bit (4); The disassembly and assembly mechanism (6) comprises a first plug-in block (601) fixedly arranged at one end of the drill bit (4), a second slot (605) being provided on the first plug-in block (601), a clamping slot (606) being provided in the second slot (605), a first slot (603) being provided at one end of the connecting rod (3) for plugging into the first plug-in block (601), a second plug-in block (607) being fixedly provided in the first slot (603) for plugging into the second slot (605), a receiving slot (608) being provided on the second plug-in block (607), a clamping block (609) being slidably connected in the receiving slot (608) for clamping into the clamping slot (606), and a spring (612) being fixedly provided in the receiving slot (608) for fixedly connecting to the clamping block (609); The second plug block (607) is provided with an active cavity (613), a rotating rod (614) is rotatably provided in the active cavity (613), a rotating wheel (615) is fixedly provided on the rotating rod (614), a connecting rope (616) is fixedly provided on the rotating wheel (615), the connecting rope (616) passes through the active cavity (613) and is fixedly connected to the clamping block (609), a worm wheel (617) is fixedly provided on the rotating rod (614), a worm (619) is rotatably provided in the active cavity (613) and is meshed with the worm wheel (617), a groove (618) is provided on the connecting rod (3), the worm (619) rotatably passes through the active cavity (613) and extends to the groove (618) and is fixedly connected to the hand-tightening block (620).

2. The geotechnical engineering exploration drilling hole wall protection device according to claim 1, characterized in that: A sealing ring (602) is fixedly provided at one end of the drill bit (4), and a sealing groove (604) for plugging into the sealing ring (602) is provided at one end of the connecting rod (3).

3. The geotechnical engineering exploration drilling hole wall protection device according to claim 2, characterized in that: Limiting blocks (610) are fixedly provided on both sides of the clamping block (609), and a limiting groove (611) adapted to the limiting block (610) is provided in the receiving groove (608), and the limiting block (610) is slidably connected to the limiting groove (611).

4. The geotechnical engineering exploration drilling hole wall protection device according to claim 1, characterized in that: The connecting rod (3) is provided with a protective cover (621) hinged to the groove (618), and the protective cover (621) is bolted to the connecting rod (3).

5. The geotechnical engineering exploration drilling hole wall protection device according to claim 1, characterized in that: The protection mechanism (5) comprises an inner cavity (501) provided in the connecting rod (3), a bidirectional screw rod (502) being rotatably provided in the inner cavity (501), a driving cavity (504) being provided in the connecting rod (3), a second motor (505) being fixedly provided in the driving cavity (504), and one end of the bidirectional screw rod (502) being rotatably passed through the inner cavity (501) and being fixedly connected to the rotating shaft of the second motor (505).

6. The geotechnical engineering exploration drilling hole wall protection device according to claim 5, characterized in that: Both ends of the bidirectional screw rod (502) are threadedly connected to a moving block (503); four soil pressing plates (507) are provided on the connecting rod (3); a fixed block (508) is fixedly provided on the soil pressing plate (507); a connecting hinge rod (510) is hingedly provided between the fixed block (508) and the moving block (503); and an avoidance groove (511) for avoiding the connecting hinge rod (510) is provided on the connecting rod (3).

7. The geotechnical engineering exploration drilling hole wall protection device according to claim 6, characterized in that: A limiting rod (509) slidably connected to the moving block (503) is fixedly provided in the inner cavity (501), a heat dissipation hole (506) communicating with the driving cavity (504) is provided on the connecting rod (3), and four soil pressing plates (507) are evenly arranged around the outer side of the connecting rod (3) with the connecting rod (3) as the axis.

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