Pile head cutting device

Abstract

The utility model discloses a pile head cutting device which comprises a fixing ring, an adjusting ring, a pin rod and an extending piece. According to the pile head cutting device, three arc-shaped sliding rails are fixedly connected to the circumference of the top face of a fixing ring, an adjusting ring is jointly connected to the arc-shaped sliding rails in a sliding mode, three adjusting arms are hinged to the circumference, corresponding to gaps of the arc-shaped sliding rails, of the top face of the fixing ring, clamping wheels are rotationally connected to the ends of the adjusting arms, and the clamping wheels abut against the outer side of a pile head; the top face of the adjusting arm is fixedly connected with a pin rod corresponding to the adjusting ring, the adjusting ring is provided with an inclined groove corresponding to the pin rod, the adjusting ring and the fixing ring are fixedly connected with extending pieces in a corresponding circumference mode, a locking bolt movably penetrates through the extending pieces together, the end of the locking bolt is in threaded connection with a fixing nut, and the middle fixing ring is clamped on the outer side of the pile head through a clamping wheel. The extending pieces are locked through the fixing nuts and the locking bolts, so that the three adjusting arms can be driven to move synchronously through cooperation of the inclined grooves and the pin rods, and the centering clamping effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a pile head cutting device. Background Art

[0002] During the construction process, a certain degree of dismantling work will occur, and the cast pile heads will need to be cut.

[0003] The existing bored pile head cutting device technology has the following problems: the existing bored pile head cutting is to use a handheld electric hammer or a manual chisel to slowly knock and peel little by little, which is very slow, wastes a lot of manpower, and has a large amount of engineering work.

[0004] The invention discloses a pile head cutting device for bored piles in construction engineering, comprising a movable disc, a movable groove and a side frame, wherein the movable disc comprises a movable groove and a side frame, the outer side of the movable groove is provided with a side frame, the end of the movable disc is connected with a fixing bolt, the bottom of the movable disc is plugged with an adjusting fixing stud, an electric hammer is provided above the movable groove, the bottom of the electric hammer is connected with a connecting seat, the front side of the connecting seat is connected with a moving gear, a movable seat is provided below the moving gear, a rack is provided on the upper inner side of the movable seat, and the rack and the moving gear are in contact with each other, the bottom of the movable seat is connected with a support frame, and an electric moving wheel is provided on the inner bottom side of the support frame, so that the concrete inside the bored pile head is cut through automated operation, which is very convenient to operate, eliminates traditional manual operation, and saves time and effort.

[0005] Although the above-mentioned prior art can conveniently perform cast-in-place pile head cutting operations, the above-mentioned prior art directly fixes the device and the cast-in-place pile head by adjusting the fixing bolts to tighten them, which is prone to fixed eccentricity, resulting in the drill bit of the electric hammer easily colliding with the cast-in-place pile head during circular cutting. Therefore, a pile head cutting device is proposed to optimize the above-mentioned prior art. Utility Model Content

[0006] The purpose of the present utility model is to provide a pile head cutting device to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The top surface of the adjusting arm is fixedly connected with a clamping wheel at the gap between the top surface of the adjusting arm and the clamping wheel, and the clamping wheel rests on the outer side of the pile head; the top surface of the adjusting arm is fixedly connected with a pin rod corresponding to the adjusting ring; the adjusting ring is provided with an oblique groove, the pin rod is inserted into the oblique groove and can move in the oblique groove, the diameter of the pin rod is equal to the width of the oblique groove; the adjusting ring and the fixing ring are fixedly connected with an extension piece corresponding to the circumference; a locking bolt is movably passed through the extension piece, and the end of the locking bolt is threadedly connected with a fixing nut; a horizontal long groove is provided on the extension piece for the locking bolt to pass through, and the fixing nut and the bolt head of the locking bolt jointly clamp the two extension pieces.

[0009] As a further solution of the present invention: the electric hammer is fixedly connected to the bottom surface of the slider, the slider is slidably connected to the linear guide rail, the linear guide rail is fixedly connected to the bottom inner side of the mounting seat, and the mounting seat is fixedly connected to the bottom surface of the fixing ring.

[0010] As a further solution of the present invention: a driving screw is rotatably installed on the inner side of the mounting seat, a screw nut matching it is threadedly connected to the driving screw, the screw nut is fixedly connected to the slider, and a motor is fixedly connected to the end of the mounting seat corresponding to the driving screw, and the output end of the motor is fixedly connected to the driving screw.

[0011] As a further solution of the present invention: the top surface of the fixing ring is further fixedly connected to a tripod.

[0012] As a further solution of the present invention: a threaded handle is connected through a middle thread of the tripod, a threaded hole for threaded connection of the threaded handle is opened on the tripod, and a butt plate is rotatably connected to the bottom end of the threaded handle.

[0013] As a further solution of the present invention: a guide column is fixedly connected to the circumference of the abutment plate, and the guide column slides through the top of the tripod, and a circular hole for the guide column to slide through is opened on the tripod.

[0014] As a further solution of the present invention: the electric hammer and the motor are both externally connected to a power supply and a switch.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the present invention, the fixing ring is clamped on the outside of the pile head by the clamping wheel, and the extension piece is locked by the fixing nut and the locking bolt, so that the three adjustment arms can be driven to move synchronously through the inclined groove and the pin rod, thereby achieving a centering clamping effect.

[0017] 2. The utility model can adjust the relative height position of the abutment plate by rotating the threaded handle in conjunction with the guidance of the guide column, and thus adjust the height of the fixing ring through the cooperation of the tripod, thereby controlling the working height of the electric hammer and facilitating the adjustment of the cutting height. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a structural diagram of a pile head cutting device.

[0019] Figure 2 This is a diagram showing the combination of a fixing ring and an adjusting ring in a pile head cutting device.

[0020] Figure 3 This is an installation diagram of an electric hammer in a pile head cutting device.

[0021] Figure 4 This is a connection diagram of a tripod in a pile head cutting device.

[0022] In the figure: 1. Fixing ring; 2. Electric hammer; 3. Arc slide; 4. Adjusting ring; 5. Adjusting arm; 6. Clamping wheel; 7. Pin rod; 8. Bevel groove; 9. Extension plate; 10. Locking bolt; 11. Fixing nut; 12. Slider; 13. Linear guide; 14. Mounting seat; 15. Drive screw; 16. Screw nut; 17. Motor; 18. Tripod; 19. Threaded handle; 20. Back plate; 21. Guide column. 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] See also Figures 1-2In the embodiment of the present utility model, a pile head cutting device includes a fixed ring 1, an electric hammer 2 is provided on the bottom surface of the fixed ring 1, three arc-shaped slide rails 3 are fixedly connected to the top surface of the fixed ring 1, and an adjusting ring 4 is slidably connected to the arc-shaped slide rails 3. Three adjusting arms 5 are hinged on the circumference of the gap between the top surface of the fixed ring 1 and the arc-shaped slide rails 3. The ends of the adjusting arms 5 are rotatably connected to the clamping wheels 6, which are against the outside of the pile head. The top surface of the adjusting arm 5 is fixedly connected to the adjusting ring 4 with a pin rod 7. The pin rod 7 is provided with an oblique groove 8, the pin rod 7 is inserted into the oblique groove 8 and can move in the oblique groove 8, the diameter of the pin rod 7 is equal to the width of the oblique groove 8, the adjusting ring 4 and the fixing ring 1 are fixedly connected with an extension piece 9 on the corresponding circumference, and a locking bolt 10 is movably passed through the extension piece 9. The end of the locking bolt 10 is threadedly connected with a fixing nut 11, and a horizontally arranged long groove for the locking bolt 10 to pass through is provided on the extension piece 9. The fixing nut 11 and the bolt head of the locking bolt 10 jointly clamp the two extension pieces 9.

[0025] The fixing ring 1 is clamped on the outside of the pile head by the clamping wheel 6, and the extension piece 9 is locked by the fixing nut 11 and the locking bolt 10, so that the three adjustment arms 5 can be driven to move synchronously through the inclined slot 8 and the pin rod 7, thereby achieving a centering clamping effect.

[0026] See also Figure 3 The electric hammer 2 is fixedly connected to the bottom surface of the slider 12, and the slider 12 is slidably connected to the linear guide 13. The linear guide 13 is fixedly connected to the bottom inner side of the mounting seat 14, and the mounting seat 14 is fixedly connected to the bottom surface of the fixed ring 1. A drive screw 15 is rotatably mounted on the inner side of the mounting seat 14. A screw nut 16 that matches it is threadedly connected to the drive screw 15. The screw nut 16 is fixedly connected to the slider 12. A motor 17 is fixedly connected to the end of the mounting seat 14 corresponding to the drive screw 15. The output end of the motor 17 is fixedly connected to the drive screw 15.

[0027] The motor 17 drives the driving screw 15 to rotate, thereby driving the slider 12 to slide on the linear guide rail 13 through the screw nut 16, thereby driving the electric hammer to approach the pile head, thereby performing the crushing and cutting work.

[0028] See also Figure 4 The top surface of the fixing ring 1 is also fixedly connected to a tripod 18. A threaded handle 19 is threadedly connected to the middle portion of the tripod 18. The tripod 18 has a threaded hole for threaded connection to the handle 19. The bottom end of the handle 19 is rotatably connected to a support plate 20. A guide post 21 is fixedly connected to the circumference of the support plate 20. The guide post 21 slides through the top of the tripod 18. The tripod 18 has a circular hole for the guide post 21 to slide through.

[0029] By rotating the threaded handle 19 and guiding the guide column 21, the relative height position of the abutment plate 20 can be adjusted, and the height of the fixing ring 1 can be adjusted by cooperating with the tripod 18, thereby controlling the working height of the electric hammer 2 and facilitating the adjustment of the cutting height.

[0030] The electric hammer 2 and the motor 17 are both externally connected to a power source and a switch.

[0031] The working principle of this utility model is:

[0032] When in use, the entire device is placed corresponding to the pile head. At this time, the fixing ring 1 is sleeved on the outside of the pile head, and the abutment plate 20 is against the top surface of the pile head. At this time, the threaded handle 19 is rotated to cooperate with the guide column 21 to adjust the relative height position of the abutment plate 20. The height of the fixing ring 1 is adjusted by the cooperation of the tripod 18 to control the working height of the electric hammer 2. The fixing nut 11 is further tightened to squeeze the two adjacent extension pieces 9, so that the adjusting ring 4 rotates, so that the inclined groove 8 pushes the adjusting arm 5 through the pin rod 7, so that the clamping wheel 6 is synchronously clamped on the outside of the pile head. At this time, the drill bit of the electric hammer 2 uses its own vibration and rotation to start drilling the cast-in-place pile, and at the same time drives the drive screw 15 to rotate through the motor 17, thereby driving the slider 12 on the linear guide rail 13 through the screw nut 16. The electric hammer 2 slides, thereby driving the electric hammer 2 to approach the pile head, and at the same time, it can drive the electric hammer 2 to move back and forth, thereby dismantling the concrete inside the cast-in-place pile head, and because after dismantling one position, the lowering device can be rotated to the other direction as a whole in conjunction with the clamping wheel 6, and then the electric hammer 2 continues to start drilling the concrete inside the cast-in-place pile head. The operation is performed back and forth, thereby drilling and vibrating the bottom of the concrete inside the cast-in-place pile head. The vibration and rotation are used to dismantle and cut the concrete of the cast-in-place pile into fragments, thereby cutting it from the bottom without damaging the external steel bars, and then the cast-in-place pile concrete fragments cut inside can be taken out. The concrete inside the cast-in-place pile head is cut by automated operation, which is very convenient to operate, eliminating traditional manual operation, saving time and effort.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pile head cutting device, comprising a fixing ring (1), characterized in that: The bottom surface of the fixing ring (1) is provided with an electric hammer (2), the top surface of the fixing ring (1) is fixedly connected to three arc-shaped slide rails (3) on the circumference, and the arc-shaped slide rails (3) are slidably connected to an adjusting ring (4), the top surface of the fixing ring (1) is hinged with three adjusting arms (5) at the circumference of the gap corresponding to the arc-shaped slide rails (3), the ends of the adjusting arms (5) are rotatably connected to a clamping wheel (6), the top surface of the adjusting arm (5) is fixedly connected to a pin rod (7) corresponding to the adjusting ring (4), an inclined groove (8) is provided on the adjusting ring (4) corresponding to the pin rod (7), the adjusting ring (4) and the fixing ring (1) are fixedly connected to an extension piece (9) on the corresponding circumference, a locking bolt (10) is movably passed through the extension piece (9), and the end of the locking bolt (10) is threadedly connected to a fixing nut (11).

2. A pile head cutting device according to claim 1, characterized in that: The electric hammer (2) is fixedly connected to the bottom surface of the slider (12), the slider (12) is slidably connected to the linear guide rail (13), the linear guide rail (13) is fixedly connected to the bottom inner side of the mounting seat (14), and the mounting seat (14) is fixedly connected to the bottom surface of the fixing ring (1).

3. A pile head cutting device according to claim 2, characterized in that: A driving screw rod (15) is rotatably mounted on the inner side of the mounting seat (14); a screw nut (16) adapted thereto is threadedly connected to the driving screw rod (15); the screw nut (16) is fixedly connected to the slider (12); a motor (17) is fixedly connected to the end of the mounting seat (14) corresponding to the driving screw rod (15); and an output end of the motor (17) is fixedly connected to the driving screw rod (15).

4. The pile head cutting device according to claim 1, characterized in that: The top surface of the fixed ring (1) is also fixedly connected to a tripod (18).

5. The pile head cutting device according to claim 4, characterized in that: The middle part of the tripod frame (18) is threadedly connected with a threaded handle (19), and the bottom end of the threaded handle (19) is rotatably connected with a support plate (20).

6. The pile head cutting device according to claim 5, characterized in that: A guide post (21) is fixedly connected to the circumference of the abutment plate (20), and the guide post (21) slides through the top of the tripod frame (18).

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