A pile drilling rig

Abstract

The present application relates to the technical field of pile drilling, and in particular to a pile drilling rig, comprising a machine body and a drill rod, wherein a support frame is arranged on the machine body, and the support frame is located directly below a drill rod driving element, and both upper and lower ends of an inner cavity of the support frame are connected to the outside, and the drill rod is vertically penetrated in the inner cavity of the support frame, and a limiting component for limiting the swing of the drill rod is arranged in the inner cavity of the support frame. When the drill rod is drilling a hole, the support frame is supported on the ground. The present application has the effect of limiting the surrounding side of the pile during construction, so that it is difficult for the pile to swing greatly during rotation, thereby improving the stability of the pile driving process.

Description

Technical Field

[0001] The present application relates to the technical field of pile foundation drilling, and in particular to a pile foundation drilling rig. Background Art

[0002] In existing pile foundation projects, pile drilling rigs are often used for drilling. The pile drilling rig mainly includes a machine body and a spiral drill rod for drilling. According to the hole diameter to be drilled, a spiral drill rod of suitable diameter is selected and installed on the machine body, so that the drill bit of the spiral drill rod is vertically downward and rotated to achieve drilling on the ground.

[0003] With regard to the above-mentioned related technologies, the inventors believe that the length of the auger rod is usually more than two meters, and the power element that clamps and drives the auger rod to rotate is located more than two meters above the ground. During the process of driving the auger rod to rotate and drill a hole, the auger rod is prone to swing, which can easily damage the driving element that drives the auger rod to rotate. Summary of the invention

[0004] In order to increase the service life of driving components and ensure the stability of drilling work, the present application provides a pile drilling rig.

[0005] The present application provides a pile drilling rig, which adopts the following technical solution:

[0006] A pile drilling rig comprises a machine body and a drill rod, wherein a support frame is arranged on the machine body, and the support frame is located directly below a drill rod driving element, and both upper and lower ends of an inner cavity of the support frame are connected to the outside world, and the drill rod is vertically penetrated in the inner cavity of the support frame, and a limit assembly for limiting the swing of the drill rod is arranged in the inner cavity of the support frame, and when the drill rod is drilling a hole, the support frame is supported on the ground.

[0007] By adopting the above technical scheme, during the process of inserting the foundation pile on the ground, the foundation pile is lifted into a vertical state by the pile drilling rig, and the support frame is installed in front of the cab of the machine body, so that the inner cavity of the support frame is located directly below the lower end of the foundation pile, and the support frame is supported on the ground, so that the drilling points on the ground are located in the inner cavity of the support frame, and the mechanical arm of the machine body is driven to rotate downward, so that the lower end of the foundation pile is inserted into the inner cavity of the support frame and abuts against the drilling points on the ground, and the foundation pile is rotated by the driving unit at the end of the machine body's mechanical arm. At the same time, the surrounding side of the foundation pile is limited by the limit assembly, so that the foundation pile is difficult to swing greatly during rotation, thereby improving the stability of the pile driving process.

[0008] Optionally, the limiting assembly includes a plurality of arc-shaped plates arranged on the inner side of the support frame, a guide rod sliding on the support frame along a direction perpendicular to the vertical direction, a catheter rotatably arranged on the side wall of the support frame, a screw threadedly connected to the inner cavity of the catheter, and a driving member arranged at one end of the catheter away from the arc-shaped plate to drive the guide rod to slide, one end of the catheter is located in the inner cavity of the support frame, and the other end extends out of the support frame, and the end of the screw extending into the inner cavity of the support frame is fixedly connected to the arc-shaped plate.

[0009] By adopting the above technical solution, the guide tube is rotated through the driving member, so that under the synchronous action of the guide rod and the screw, the entire arc plate slides in the cavity of the support frame along the length direction of the guide rod toward the drill rod until the arc plate slides to a specified distance from the drill rod, thereby making it difficult for the drill rod to swing significantly during rotation.

[0010] Optionally, the driving member includes a worm gear coaxially fixed on the outer wall of one end of the catheter extending out of the support frame, a worm rotatably connected to the side wall of the support frame for use with the worm gear, and a motor fixed to the side wall of the support frame, and the rotating shaft of the motor is coaxially fixedly connected to the worm gear.

[0011] By adopting the above technical solution, the shaft of the motor is driven to rotate, so that the worm meshes with the worm wheel to rotate, thereby driving the catheter to rotate, so that the screw threaded in the inner cavity of the catheter slides along the length direction of the guide rod, driving the arc plate to slide in the direction close to the drill rod, thereby achieving support and positioning of the drill rod, and limiting the swing of the drill rod during drilling.

[0012] Optionally, the support frame is a rectangular frame, one side of the support frame is open, a door panel for sealing the opening is rotatably provided on the support frame, a first gear is rotatably provided at a corner of the support frame, one of the first gears is coaxially fixed to the lower end of the rotating shaft of the door panel, the motor is a double-axle extension motor, the worm is coaxially fixed to the upper rotating shaft of the motor, a second gear is coaxially fixed to the lower rotating shaft of the motor, a synchronous belt is wound around the first gear and the second gear, and when the arc plate slides toward the direction close to the drill rod and slides to a specified distance, the door panel blocks the opening.

[0013] By adopting the above technical solution, when driving the motor shaft to rotate, the first gear and the second gear rotate synchronously under the action of the synchronous belt, so that when the arc plate slides to a specified distance from the drill rod, the door plate can block the open side of the support frame.

[0014] Optionally, a vertically arranged support rod is coaxially fixed to the bottom surface of the first gear, and the lower end of the support rod is conical.

[0015] By adopting the above technical solution, during the rotation of the first gear, the support rod and the first gear rotate synchronously, thereby making it easier to insert and install the entire support frame on the ground.

[0016] Optionally, a mounting seat is fixed on the side wall of the body, a mounting hole is opened on the upper surface of the mounting seat, a mounting tube is arranged on the side wall of the support frame, an insertion rod is fixed to one end of the mounting tube away from the support frame, and the insertion rod is inserted into the mounting hole.

[0017] By adopting the above technical solution, the mounting seat is welded and fixed at the rotating position of the machine body's mechanical arm. When the support frame is connected to the machine body, the insertion rod is inserted into the mounting hole, so that the support frame and the support frame can rotate synchronously during the rotation process of the machine body's mechanical arm.

[0018] Optionally, the mounting tube includes a first tube fixedly connected to the side wall of the support frame, a second tube sliding in the inner cavity of the first tube, and a limiting bolt threadedly connected to the outer wall of one end of the first tube away from the support frame, one end of the second tube slides in the inner cavity of the first tube, and the other end extends out of the first tube, and the insertion rod is fixed to the outer wall of the end of the second tube extending out of the first tube.

[0019] By adopting the above technical solution, the depth of the second tube extending into the inner cavity of the first tube is adjusted, thereby achieving the adjustment of the distance between the support frame and the body.

[0020] Optionally, a plurality of balls are rotatably arranged on the inner wall of the arc-shaped plate, and during the construction process, the outer walls of the balls are in contact with the outer wall of the drill rod.

[0021] By adopting the above technical solution, the ball reduces the friction between the inner wall of the arc plate and the outer wall of the drill rod, making it easier for the drill rod to drill vertically downward.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. During the construction process, the sides of the piles are limited, making it difficult for the piles to swing significantly during rotation, thus improving the stability of the pile driving process;

[0024] 2. By setting the arc plate, the drill rod is supported and positioned to limit the swing of the drill rod during drilling; by setting the ball bearings, the ball bearings reduce the friction between the inner wall of the arc plate and the outer wall of the drill rod, making it easier for the drill rod to drill vertically downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the first embodiment.

[0026] Figure 2 It is a schematic diagram of the overall structure of the support frame in the first embodiment.

[0027] Figure 3 It is a schematic diagram of the overall structure of the support frame in the second embodiment.

[0028] Figure 4 It is a schematic diagram of the overall structure of the driving member in the second embodiment.

[0029] Figure numerals: 1. body; 2. drill rod; 3. support frame; 4. limit assembly; 5. arc plate; 6. guide rod; 7. guide tube; 8. screw; 9. driving member; 10. worm gear; 11. worm; 12. motor; 13. door panel; 14. first gear; 15. second gear; 16. synchronous belt; 17. support rod; 18. mounting seat; 19. mounting hole; 20. mounting tube; 21. insertion rod; 22. first tube; 23. second tube; 24. limit bolt; 25. ball. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] Embodiment 1:

[0032] The embodiment of the present application discloses a pile foundation drilling rig.

[0033] Reference Figure 1 A foundation pile drilling machine includes a machine body 1 and a drill rod 2. The machine body 1 is the same as the machine body 1 of an excavator. A clamp for clamping the drill rod 2 is fixedly installed at the mechanical arm portion of the machine body 1. The clamp can rotate the clamped drill rod 2. During the piling process, the drill rod 2 is lifted up in a vertical state in advance by the mechanical arm.

[0034] Reference Figure 1 and Figure 2 A support frame 3 is arranged below the drill rod 2. The support frame 3 is a rectangular frame, which is fixed on the ground. A mounting seat 18 is arranged on the side wall of the machine body 1. The mounting seat 18 is fixed on the side wall of the lower end of the mechanical arm of the machine body 1. During the rotation of the mechanical arm of the machine body 1, the mounting seat 18 rotates synchronously with the mechanical arm. A mounting hole 19 is opened on the upper surface of the mounting seat 18. A mounting tube 20 is arranged on the side wall of the support frame 3. An insertion rod 21 is fixed on the outer wall of the mounting tube 20. The insertion rod 21 is a round rod. The insertion rod 21 is inserted into the inner cavity of the mounting hole 19. Bolts are threadedly connected on the outer wall of the mounting seat 18. After the support frame 3 is installed in the specified position, the bolts are rotated to fix the insertion rod 21 in the mounting hole 19.

[0035] Reference Figure 2The inner cavity of the support frame 3 is hollow, the upper end and the lower end of the support frame 3 are connected to the outside world, one side of the support frame 3 is open, and the side of the support frame 3 with an opening is rotatably connected to a door panel 13, and the opening can be closed by rotating the door panel 13. A limit assembly 4 for limiting the swing of the drill rod 2 is arranged in the support frame 3, and the limit assembly 4 can be an arc-shaped piece that fits the drill rod 2. The arc-shaped piece is optimally arranged with three pieces, and the arc-shaped piece is threadedly connected to the inner cavity of the support frame 3, and the three arc-shaped pieces are respectively arranged on the three sides of the support frame 3 without an opening.

[0036] Reference Figure 2 In the process of placing the drill rod 2 in the inner cavity of the support frame 3, the door panel 13 is rotated in advance so that the opening is in an open state, and the entire support frame 3 is rotated. The insertion rod 21 is rotated in the mounting hole 19, so that the drill rod 2 enters the inner cavity of the support frame 3 from the position of the opening of the support frame 3, and the drill rod 2 is located between the three arc-shaped pieces. At this time, the bolt threadedly connected to the mounting seat 18 is rotated to make the insertion rod 21 difficult to rotate. At the same time, the door panel 13 is closed, and the entire drill rod 2 is installed in the inner cavity of the support frame 3.

[0037] In the first embodiment of the present application, the implementation principle of a pile drilling rig is as follows: during the piling process, the lower end of the drill rod 2 is vertically downward and abuts against the drilling position on the ground, and a driving element at the mechanical arm is used. The driving element is a hydraulic motor, and the clamp is fixed to the end of the rotating shaft of the hydraulic motor. During the rotation of the drill rod 2 held by the clamp, the drill rod 2 located between the three arc-shaped pieces is difficult to swing significantly, thereby improving the stability of the piling.

[0038] Embodiment 2:

[0039] Reference Figure 3 and Figure 4 , the difference between the second embodiment and the first embodiment is that: the limit assembly 4 includes an arc plate 5, a guide rod 6, a guide tube 7, a screw 8 and a driving member 9 arranged at one end of the guide tube 7 away from the arc plate 5 to drive the guide rod 6 to slide, three arc plates 5 are provided, and the three arc plates 5 are respectively arranged on the inner side wall of the support frame 3 without an opening, and a plurality of balls 25 are evenly spaced and rotatably arranged on the inner wall of the arc plate 5. During the construction process, the outer wall of the ball 25 is connected with the outer wall of the drill rod 2, and the ball 25 reduces the friction between the inner wall of the arc plate 5 and the outer wall of the drill rod 2, which makes it easier for the drill rod 2 to drill vertically downward, and the guide rod 6 slides on the support frame 3 in a direction perpendicular to the axial direction of the drill rod 2, one end of the guide rod 6 is located in the inner cavity of the support frame 3 and is fixedly connected to the arc plate 5, and the other end extends out of the support frame 3.

[0040] Reference Figure 4The axial direction of the catheter 7 is arranged parallel to the axial direction of the guide rod 6, the catheter 7 is rotatably connected to the side wall of the support frame 3, one end of the screw 8 is located in the inner cavity of the support frame 3 and fixed on the side wall of the arc plate 5, and the other end of the screw 8 is threadedly connected to the inner cavity of the catheter 7. The driving member 9 for driving the catheter 7 to rotate includes a worm wheel 10, a worm 11 and a motor 12. The worm wheel 10 is coaxially fixed on the outer wall of the catheter 7, and the worm 11 is rotatably connected to the outer side wall of the support frame 3. The worm 11 engages the worm wheel 10 to rotate, and the motor 12 is fixed on the outer side wall of the support frame 3, and the rotating shaft of the motor 12 is coaxially fixedly connected to the worm 11.

[0041] Reference Figure 3 and Figure 4 , first gears 14 are rotatably provided at the corners of the support frame 3, one of the first gears 14 is coaxially fixedly connected with the rotating shaft of the door panel 13, the motor 12 is a double-axle extension motor 12, the upper end rotating shaft of the motor 12 is coaxially fixedly connected with the rotating shaft of the worm 11, and the lower end rotating shaft of the motor 12 is coaxially fixed with a second gear 15, and a synchronous belt 16 is wound around the first gear 14 and the second gear 15. When the drill rod 2 is placed in the inner cavity of the support frame 3, the lower end of the drill rod 2 enters the inner cavity of the support frame 3 from above the synchronous belt 16, and then in the process of driving the rotating shaft of the motor 12 to rotate, under the action of the synchronous belt 16, the first gear 14 and the second gear 15 rotate synchronously, and the door panel 13 blocks the opening of the support frame 3.

[0042] Reference Figure 3 A vertically arranged support rod 17 is coaxially fixed on the bottom surface of the first gear 14, and the lower end of the support rod 17 is conical, so that during the rotation of the first gear 14, the tip of the support rod 17 rotates on the ground, which makes it easier to fix the entire support frame 3 on the ground.

[0043] Reference Figure 3 The mounting tube 20 between the support frame 3 and the body 1 includes a first tube 22, a second tube 23 and a limiting bolt 24. One end of the first tube 22 is welded and fixed to the support frame 3, one end of the second tube 23 slides in the inner cavity of the first tube 22, and the other end extends out of the first tube 22 and is fixed with an insertion rod 21. The insertion rod 21 is inserted in the mounting hole 19 of the mounting seat 18, and the limiting bolt 24 is threadedly connected to the outer wall of the first tube 22 away from the support frame 3. After the spacing between the support frame 3 and the body 1 is adjusted, the limiting bolt 24 is rotated so that the limiting bolt 24 abuts against the inner wall of the second tube 23 located in the first tube 22, thereby achieving relative fixation of the first tube 22 and the second tube 23.

[0044] In the second embodiment of the present application, the implementation principle of a pile drilling rig is as follows: during the piling process, the drill rod 2 is installed in the inner cavity of the support frame 3, so that the lower end of the drill rod 2 is vertically downward and abuts against the drilling position on the ground, and the driving motor 12 is driven to rotate, so that the door panel 13 blocks the opening of the support frame 3, and at the same time, the screw 8 and the arc plate 5 slide toward the direction close to the outer wall of the drill rod 2 until they slide to the specified distance. At this time, the drill rod 2 is located between the three arc plates 5, and it is difficult for the drill rod 2 to swing greatly during rotation, thereby improving the stability of the piling work.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pile drilling machine, comprising a machine body (1) and a drill rod (2), Features: The machine body (1) is the same as that of an excavator. A clamp for clamping a drill rod (2) is fixedly installed at the mechanical arm of the machine body (1), and the clamp can rotate the clamped drill rod (2). A support frame (3) is provided on the machine body (1). The support frame (3) is located directly below a driving element of the drill rod (2). Both upper and lower ends of the inner cavity of the support frame (3) are connected to the outside. The drill rod (2) is vertically inserted into the inner cavity of the support frame (3). A limit assembly (4) for limiting the swing of the drill rod (2) is provided in the inner cavity of the support frame (3). When the drill rod (2) is drilling a hole, the support frame (3) is supported on the ground. The limiting assembly (4) comprises a plurality of arc-shaped plates (5) arranged on the inner side of the support frame (3), a guide rod (6) sliding on the support frame (3) in a direction perpendicular to the vertical direction, a guide tube (7) rotatably arranged on the side wall of the support frame (3), a screw rod (8) threadedly connected in the inner cavity of the guide tube (7), and a driving member (9) arranged at one end of the guide tube (7) away from the arc-shaped plate (5) to drive the guide rod (6) to slide, one end of the guide tube (7) is located in the inner cavity of the support frame (3), and the other end extends out of the support frame (3), and the end of the screw rod (8) extending into the inner cavity of the support frame (3) is fixedly connected to the arc-shaped plate (5); The driving member (9) comprises a worm wheel (10) coaxially fixed to the outer wall of one end of the guide tube (7) extending out of the support frame (3), a worm (11) rotatably connected to the side wall of the support frame (3) for use with the worm wheel (10), and a motor (12) fixed to the side wall of the support frame (3), wherein the rotating shaft of the motor (12) is coaxially fixedly connected to the worm (11); The support frame (3) is a rectangular frame, one side of the support frame (3) is open, a door plate (13) for blocking the opening is rotatably arranged on the support frame (3), a first gear (14) is rotatably arranged at a corner of the support frame (3), one of the first gears (14) is coaxially fixed to the lower end of the rotating shaft of the door plate (13), the motor (12) is a double-axle extension motor (12), the worm (11) is coaxially fixed to the upper end rotating shaft of the motor (12), a second gear (15) is coaxially fixed to the lower end rotating shaft of the motor (12), a synchronous belt (16) is wound around the first gear (14) and the second gear (15), and when the arc plate (5) slides toward a direction close to the drill rod (2) and slides to a specified distance, the door plate (13) blocks the opening.

2. A pile drilling rig according to claim 1, Features: A vertically arranged support rod (17) is coaxially fixed to the bottom surface of the first gear (14), and the lower end of the support rod (17) is conical.

3. A pile drilling rig according to claim 1, Features: A mounting seat (18) is fixed on the side wall of the machine body (1), a mounting hole (19) is provided on the upper surface of the mounting seat (18), a mounting tube (20) is provided on the side wall of the support frame (3), an insertion rod (21) is fixed at one end of the mounting tube (20) away from the support frame (3), and the insertion rod (21) is inserted into the mounting hole (19).

4. A pile drilling rig according to claim 3, Features: The mounting tube (20) comprises a first tube (22) fixedly connected to the side wall of the support frame (3), a second tube (23) sliding in the inner cavity of the first tube (22), and a limit bolt (24) threadedly connected to the outer wall of one end of the first tube (22) away from the support frame (3); one end of the second tube (23) slides in the inner cavity of the first tube (22), and the other end extends out of the first tube (22); the insertion rod (21) is fixed to the outer wall of the end of the second tube (23) extending out of the first tube (22).

5. A pile drilling rig according to claim 1, Features: A plurality of balls (25) are rotatably arranged on the inner wall of the arc-shaped plate (5). During the construction process, the outer walls of the balls (25) are in contact with the outer wall of the drill rod (2).

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