Bridge engineering bored pile head girdling device

Abstract

A bridge engineering drilling pile head girdling device comprises a guide rail mechanism, a fixing mechanism, a walking mechanism, a distance adjusting mechanism and a cutting mechanism. The upper portion of the guide rail mechanism is provided with a plurality of fixing mechanisms, the lower portion of the guide rail mechanism is connected with the walking mechanism, the guide rail mechanism surrounds the drilling pile head and fixes the walking route of the walking mechanism, and the fixing mechanisms jointly cooperate to fix the drilling pile head. The lower portion of the walking mechanism is connected with the distance adjusting mechanism, the lower portion of the distance adjusting mechanism is connected with the cutting mechanism, the walking mechanism drags the cutting mechanism to do annular motion, the distance adjusting mechanism adjusts the distance between the cutting mechanism and the drilling pile head, and the cutting mechanism cuts the drilling pile head. When the annular cutting device is adopted to conduct annular cutting on the drilling pile head, the distance between the cutting blade of the cutting mechanism and the drilling pile head can be automatically adjusted, so that the related drilling pile head breaking task can be completed in a high-efficiency and high-quality mode, the construction progress is fast, steel bars in the drilling pile head are not damaged, and the construction period is shortened. And the integrity of the drilling pile head reinforcing steel bar is effectively ensured.

Description

Technical field:

[0001] The utility model relates to a construction tool, in particular to a tool for circumferential cutting of bored pile heads in bridge engineering. Background technology:

[0002] At present, the traditional construction of bored pile heads in bridge projects usually adopts the ring cutting process. The traditional ring cutting process is easy to cut the steel bars when the protective layer of the steel cage is insufficient due to the tilt, which has a great impact on subsequent work. Summary of the invention:

[0003] The problem that the utility model aims to solve is to provide a bored pile head ring cutting device for bridge engineering in view of the above shortcomings.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] The utility model provides a bored pile head ring cutting device for bridge engineering, which includes a guide rail mechanism, a fixing mechanism, a running mechanism, a distance adjustment mechanism, and a cutting mechanism. The fixing mechanism is installed on the upper part of the guide rail mechanism and is connected to the running mechanism at the lower part. The running mechanism is connected to the distance adjustment mechanism at the lower part, and the distance adjustment mechanism is connected to the cutting mechanism at the lower part. The guide rail mechanism is a circular ring structure, the upper half of which is a hollow gear and the lower half is a smooth hollow circular ring guide rail. A gear is arranged on the outer side of the hollow gear, and the guide rail mechanism surrounds the bored pile head. The fixing mechanism is composed of a linear motor, a guide The cam is connected to the guide rail mechanism by a nut, a fixing block and a screw. The linear motor is fixed on the hollow gear of the guide rail mechanism. The linear motor, the guide nut and the fixing block are coaxially arranged through the screw. There are several sets of fixing mechanisms evenly arranged in a ring on the guide rail mechanism. Several sets of fixing mechanisms work together to fix the bored pile head. The running mechanism is composed of a running gear, a first guide wheel, a running connecting steel plate and a running motor. The running motor is connected to the running connecting steel plate above it by bolts. The running connecting steel plate is connected to the distance adjustment mechanism at the bottom and the first guide wheel is provided at one end of the upper portion. The guide wheel is connected to the hollow annular guide rail in a rolling manner, the rotating end at the top of the traveling motor is connected to the traveling gear, and the traveling gear is meshed with the hollow gear; the distance adjustment mechanism is composed of a frame, an electric cylinder, a push-pull rod, a distance adjustment steel plate, a second guide wheel, a resistance sensor, and a wire harness tube. The frame is connected to the upper traveling connecting steel plate. The frame is a hollow frame with slots set at the four corners of the frame. Four second guide wheels are symmetrically set on the distance adjustment steel plate. The second guide wheels are engaged with the corresponding slots. Electric cylinders with push-pull rods are symmetrically set on both sides of the frame. The electric cylinders on both sides synchronously control the push and pull of both sides. Rod, both sides of the adjustable pitch steel plate are connected with the telescopic ends of the corresponding push-pull rods, a resistance sensor is arranged on one side of the frame, a wire harness tube is arranged above the resistance sensor, the wire harness tube is connected with the hanger bar of the bored pile head, and the resistance sensor is connected with the cutting mechanism and the electric cylinder below; the cutting mechanism consists of a cutting motor, a cutting blade and a protective cover, the rotating end of the cutting motor is connected with the cutting blade, a protective cover is arranged on the outside of the cutting blade, the cutting blade is connected with the resistance sensor, the cutting motor is connected to the side of the adjustable pitch steel plate by bolts, and the cutting blade is arranged horizontally with the bored pile head.

[0006] The guide rail mechanism is an I-shaped triple circular ring superposition structure.

[0007] The diameters of the hollow gear and hollow annular guide rail are 1.2 to 1.5 times the diameter of the bored pile head.

[0008] The guide nut and the fixing block are internally provided with threads of the same size as the screw.

[0009] The screw rod is made of precision-rolled threaded steel, the fixed block is made of steel, the connection of the fixed block is internally provided with threads and the outer side is an arc-shaped steel plate.

[0010] The fixing mechanisms are arranged in 8 sets in a ring on the guide rail mechanism, with each set spaced at an angle of 45 degrees.

[0011] The running gear, the first guide wheel and the running connecting steel plate are all made of steel components.

[0012] The frame, the clamping slot, the push-pull rod, the distance-adjusting steel plate, the second guide wheel and the cable bundle tube are all made of steel components.

[0013] The push-pull rod end is an annular hollow cylindrical sleeve, and push-pull rod bayonet holes are symmetrically arranged on both sides of the adjustable steel plate. The annular hollow cylindrical sleeve of the push-pull rod end is sleeved on the corresponding push-pull rod bayonet hole.

[0014] The wire bundle tube is arranged outside the screw rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When in use, the guide rail mechanism of the utility model surrounds the bored pile head, and multiple sets of fixing mechanisms cooperate to fix the bored pile head. The resistance sensor of the distance-adjusting mechanism is connected to the suspension bar of the bored pile head. When the distance-adjusting mechanism detects that the cutting blade meets the steel bar of the bored pile head, the cutting blade stops rotating immediately, and the distance between the cutting blade and the bored pile head is automatically adjusted before restarting the cutting blade. In this way, the relevant task of breaking the bored pile head can be completed with high efficiency and high quality, the construction progress is fast, the cost is reduced, the quality, flatness and aesthetics of the bored pile head ring cutting after breaking can be guaranteed, the integrity of the steel bar of the bored pile head is effectively guaranteed, the quality hidden dangers are reduced, the construction efficiency is high, the degree of automation is high, the cost is low, and the practicability is strong.

[0017] 2. This utility model is suitable for pile foundations with diameters of 1 meter, 1.25 meters, and 1.5 meters. Description of the drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model when in use;

[0019] Figure 2 This is a top view of the structure of the utility model when in use;

[0020] Figure 3 This is a side view of the structure of the utility model when in use;

[0021] Figure 4 This is a side view of the guide rail mechanism of the utility model;

[0022] Figure 5 It is a schematic diagram of the fixing mechanism of the utility model;

[0023] Figure 6 This is a cross-sectional view of the running mechanism of the utility model;

[0024] Figure 7 This is a schematic diagram of the distance adjustment mechanism of the utility model;

[0025] Figure 8 It is a schematic diagram of the cutting mechanism of the present utility model.

[0026] Reference numerals in the figures:

[0027] 1-guide rail mechanism, 2-travel mechanism, 3-distance adjustment mechanism, 4-cutting mechanism, 5-fixing mechanism, 6-bored pile head, 7-hanging rod.

[0028] 11-hollow gear, 12-hollow annular guide rail.

[0029] 21-travel gear, 22-first guide wheel, 23-travel connecting steel plate, 24-travel motor.

[0030] 31-frame, 32-slot, 33-electric cylinder, 34-push-pull rod, 35-adjustable steel plate, 36-second guide wheel, 37-push-pull rod bayonet, 38-resistance sensor, 39-cable tube.

[0031] 41-cutting motor, 42-cutting blade, 43-protective cover.

[0032] 51- linear motor, 52- guide nut, 53- fixed block, 54- screw. Specific implementation method:

[0033] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0034] See also Figures 1-8 The utility model provides a bored pile head ring cutting device for bridge engineering, which includes a guide rail mechanism 1, a fixing mechanism 5, a running mechanism 2, a distance adjusting mechanism 3, and a cutting mechanism 4. The fixing mechanism 5 is installed on the upper part of the guide rail mechanism 1 and is connected to the running mechanism 2 at the lower part. The running mechanism 2 is connected to the distance adjusting mechanism 3 at the lower part, and the distance adjusting mechanism 3 is connected to the cutting mechanism 4 at the lower part.

[0035] The guide rail mechanism 1 is used to fix the running route of the running mechanism 2 and provide a platform for the fixing mechanism 5. The guide rail mechanism 1 is an I-shaped triple circular ring superimposed structure. The upper half of the guide rail mechanism 1 is a hollow gear 11, and the lower half is a smooth hollow circular ring guide rail 12. A gear is arranged on the outside of the hollow gear 11. The guide rail mechanism 1 surrounds the bored pile head 6. The diameter of the hollow gear 11 and the hollow circular ring guide rail 12 is 1.2 to 1.5 times the diameter of the bored pile head 6.

[0036] The fixing mechanism 5 is used to secure the circumferential cutting device to the bored pile head 6. Several sets of fixing mechanisms 5 are evenly arranged in a circular pattern on the guide rail mechanism 1. These sets of fixing mechanisms 5 work together to secure the bored pile head 6. In this embodiment, eight sets of fixing mechanisms 5 are arranged in a circular pattern on the guide rail mechanism 1, with each set spaced 45° apart. A single fixing mechanism 5 consists of a linear motor 51, a guide nut 52, a fixing block 53, and a screw 54. The linear motor 51 is fixed to the hollow gear 11 of the guide rail mechanism 1. The guide nut 52 and fixing block 53 have internal threads of the same size as the screw 54. The linear motor 51, guide nut 52, and fixing block 53 are coaxially arranged via the screw 54. When the linear motor 51 is activated, the screw 54 rotates, connecting to the fixing block 53 through the guide nut 52, securing the circumferential cutting device to the bored pile head 6. The screw 54 is made of finely rolled threaded steel, while the fixing block 53 is made of steel. The connection between the fixing block 53 is internally threaded and externally formed with a curved steel plate.

[0037] The running mechanism 2 is used to pull the cutting mechanism 4 in a circular motion. It consists of a running gear 21, a first guide wheel 22, a running connection plate 23, and a running motor 24. The running motor 24 is bolted to the running connection plate 23 above it. The running connection plate 23 is connected to the pitch adjustment mechanism 3 at its bottom and has a first guide wheel 22 at one end. The first guide wheel 22 is in rolling contact with the hollow annular guide rail 12 to maintain the running path. The rotating end at the top of the running motor 24 is connected to the running gear 21. The running motor 24 drives the running gear 21 mounted on its top to engage with the hollow gear 11, providing circular motion power for the running connection plate 23. The running gear 21, first guide wheel 22, and running connection plate 23 are made of steel.

[0038] The distance adjustment mechanism 3 is used to adjust the distance between the cutting mechanism 4 and the bored pile head 6. It consists of a frame 31, an electric cylinder 33, a push-pull rod 34, a distance adjustment steel plate 35, a second guide wheel 36, a resistance sensor 38, and a cable harness 39. The frame 31 is hollow and connected to the upper running connecting steel plate 23. Slots 32 are provided at the four corners of the frame 31 to determine the movement direction of the distance adjustment steel plate 35. Four second guide wheels 36 are symmetrically provided on the distance adjustment steel plate 35. The second guide wheels 36 engage with corresponding slots 32 and move within the slots 32. Electric cylinders 33 with push-pull rods 34 are symmetrically mounted on either side of the frame 31. These cylinders 33 synchronously control the push-pull rods 34, controlling the movement of adjustable steel plates 35. The adjustable steel plates 35 are connected to the telescopic ends of the corresponding push-pull rods 34 on either side. The push-pull rods 34 terminate in hollow cylindrical sleeves. Symmetrical push-pull rod bayonet sockets 37 are located on either side of the adjustable steel plates 35 for connecting to the push-pull rods 34. The hollow cylindrical sleeves at the ends of the push-pull rods 34 fit over the corresponding push-pull rod bayonet sockets 37. A resistance sensor 38 is mounted on one side of the frame 31. A cable harness 39 is located above the resistance sensor 38 and connected to the suspension rod 7 of the bored pile head 6. Below the resistance sensor 38, it is connected to the cutting mechanism 4 and the electric cylinder 33, controlling the extension and retraction of the push-pull rods 34. When the resistance sensor 38 detects a change in resistance, the electric cylinder 33 controls the push-pull rods 34 to move outward until the resistance changes again. The cable harness 39 is located outside the screw 54. The frame 31 , the slot 32 , the push-pull rod 34 , the distance-adjusting steel plate 35 , the second guide wheel 36 and the cable harness tube 39 are made of steel components.

[0039] The cutting mechanism 4 is used to cut the bored pile head 6. It consists of a cutting motor 41, a cutting blade 42, and a protective cover 43. The rotating end of the cutting motor 41 is connected to the cutting blade 42, providing power for the cutting of the bored pile head 6. A protective cover 43 is positioned outside the cutting blade 42. The cutting blade 42 is connected to a resistance sensor 38, and the cutting motor 41 is bolted to the side of the adjustable steel plate 35. When the cutting blade 42 contacts the rebar of the bored pile head 6, the resistance of the resistance sensor 38 changes, and the electric cylinder 33 controls the push-pull rod 34 to move the cutting mechanism 4 mounted on the adjustable steel plate 35. The cutting blade 42 is positioned horizontally with respect to the bored pile head 6.

[0040] The steps for using the ring cutting device are as follows:

[0041] S1: Before construction, the surveying team first lays out the tangent line on the bored pile head 6, and then installs the tangent device after clearly marking the line with an ink fountain.

[0042] S2: The bored pile head 6 is placed in the I-shaped ring structure of the guide rail mechanism 1. The staff starts the linear motor 51, and the linear motor 51 rotates the screw 54 through the guide nut 52 and the fixing block 53 to fix the eight fixing mechanisms 5 of the device on the periphery of the bored pile head 6.

[0043] S3: The worker starts the cutting motor 41 , which cuts at a depth less than 2 cm thick of the protective layer. The cutting mechanism 4 moves in a circular motion under the traction of the traveling mechanism 2 to cut the bored pile head 6 .

[0044] S4: When the distance adjusting mechanism 3 does not detect that the cutting blade 42 meets the bored pile head 6 steel bar, the ring cutting is completed normally; when the distance adjusting mechanism 3 detects that the cutting blade 42 meets the bored pile head 6 steel bar, the cutting motor 41 is turned off, the rotation of the cutting blade 42 is immediately stopped, and the distance between the cutting blade 42 and the bored pile head 6 is automatically adjusted outward by the distance adjusting mechanism 3, and then the cutting blade 42 is restarted to achieve the purpose of protecting the bored pile head 6 steel bar.

[0045] S5: The workers then used a jackhammer to chisel out a V-shaped groove and peel off the concrete from top to bottom and from outside to inside, so that the concrete above the cutting plane was separated from the steel bars.

[0046] It should be noted that:

[0047] Requirements for the tangent line: The first tangent line is released at the cutting position of the bored pile head 6, and the cutting blade 42 is used to perform a circular cutting on the tangent line of the bored pile head 6. The depth is less than 2 cm of the protective layer thickness, so that when the bored pile head 6 is broken, it can be effectively ensured that the elevation of the bored pile head 6 meets the requirements of the design specifications and the internal steel bars of the bored pile head 6 are not damaged.

Claims

1. A bored pile head ring cutting device for bridge engineering, characterized by: The ring cutting device comprises a guide rail mechanism (1), a fixing mechanism (5), a running mechanism (2), a distance adjustment mechanism (3), and a cutting mechanism (4); the fixing mechanism (5) is installed on the upper part of the guide rail mechanism (1), and the lower part is connected to the running mechanism (2); the lower part of the running mechanism (2) is connected to the distance adjustment mechanism (3), and the lower part of the distance adjustment mechanism (3) is connected to the cutting mechanism (4); the guide rail mechanism (1) is a ring structure, the upper half of which is a hollow gear (11) and the lower half is a smooth hollow ring guide rail (12); a gear is arranged outside the hollow gear (11); the guide rail mechanism (1) surrounds the bored pile head (6); the fixing mechanism (5) is composed of a linear motor (51), a guide nut (52), The fixed block (53) and the screw (54) are composed of a linear motor (51) fixedly arranged on the hollow gear (11) of the guide rail mechanism (1). The linear motor (51), the guide nut (52) and the fixed block (53) are coaxially arranged through the screw (54). The fixing mechanism (5) is evenly arranged in a ring shape on the guide rail mechanism (1). The fixing mechanisms (5) are used to fix the bored pile head (6). The running mechanism (2) is composed of a running gear (21), a first guide wheel (22), a running connection steel plate (23) and a running motor (24). The running motor (24) is connected to the running connection steel plate (23) above it by bolts. The running connection steel plate (23) is connected to the running connection steel plate (23) by bolts. ) is connected to the distance adjustment mechanism (3) at the bottom, and a first guide wheel (22) is provided at one end of the upper part. The first guide wheel (22) is connected to the hollow annular guide rail (12) in a rolling manner. The rotating end of the top of the running motor (24) is connected to the running gear (21), and the running gear (21) is meshed with the hollow gear (11); the distance adjustment mechanism (3) is composed of a frame (31), an electric cylinder (33), a push-pull rod (34), a distance adjustment steel plate (35), a second guide wheel (36), a resistance sensor (38), and a wire harness (39). The frame (31) is connected to the upper running connecting steel plate (23). The frame (31) is a hollow frame. The frame (31) is provided with slots (32) at the four corners. Four second guide wheels (36) are symmetrically arranged above and below the distance steel plate (35), and the second guide wheels (36) are engaged with the corresponding card slots (32). Electric cylinders (33) with push-pull rods (34) are symmetrically arranged on both sides of the frame (31). The electric cylinders (33) on both sides synchronously control the push-pull rods (34) on both sides. Both sides of the distance-adjusting steel plate (35) are connected to the telescopic ends of the corresponding push-pull rods (34). A resistance sensor (38) is arranged on one side of the frame (31), and a wire bundle tube (39) is arranged above the resistance sensor (38). The wire bundle tube (39) is connected to the hanging rod (7) of the bored pile head (6). The resistance sensor (38) is connected to the cutting mechanism (4) and the electric cylinder (33) below.The cutting mechanism (4) is composed of a cutting motor (41), a cutting blade (42), and a protective cover (43). The rotating end of the cutting motor (41) is connected to the cutting blade (42). The protective cover (43) is provided outside the cutting blade (42). The cutting blade (42) is connected to the resistance sensor (38). The cutting motor (41) is connected to the side of the adjustable steel plate (35) by bolts. The cutting blade (42) is arranged horizontally with the bored pile head (6).

2. A bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The guide rail mechanism (1) is an I-shaped triple circular ring superposition structure.

3. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The diameters of the hollow gear (11) and the hollow annular guide rail (12) are 1.2 to 1.5 times the diameter of the bored pile head (6).

4. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The guide nut (52) and the fixing block (53) are internally provided with threads of the same size as the screw rod (54).

5. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The screw rod (54) is made of finely rolled threaded steel, the fixed block (53) is made of steel, and the connection of the fixed block (53) is internally provided with threads and the outer side is an arc-shaped steel plate.

6. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The fixing mechanisms (5) are arranged in 8 sets in a ring on the guide rail mechanism (1), with each set spaced at an angle of 45 degrees.

7. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The running gear (21), the first guide wheel (22), and the running connecting steel plate (23) are all made of steel components.

8. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The frame (31), the clamping slot (32), the push-pull rod (34), the distance-adjusting steel plate (35), the second guide wheel (36) and the wire harness tube (39) are all made of steel components.

9. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The end of the push-pull rod (34) is an annular hollow cylindrical sleeve, and push-pull rod bayonet holes (37) are symmetrically arranged on both sides of the distance adjustment steel plate (35). The annular hollow cylindrical sleeve at the end of the push-pull rod (34) is sleeved on the corresponding push-pull rod bayonet hole (37).

10. The bored pile head ring cutting device for bridge engineering according to claim 1, characterized in that: The wire bundle tube (39) is arranged outside the screw rod (54).

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