Cast-in-place concrete pile construction device capable of controlling embedding depth of guide pipe
By using construction devices including conduits, cranes, suspension structures and suspension force detection output mechanisms in the construction of concrete cast piles, the problem of difficult to know the depth of conduits is solved, and the accurate control of conduit depth is achieved and the safety and efficiency of construction is improved.
Patent Information
- Application Number
- CN202420197900.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-01-26
AI Technical Summary
In the construction of concrete cast-injected piles, the depth of the conduit is difficult to easily be known, resulting in too shallow or too deep burial, increasing the difficulty of extubation and the risk of pollution.
A construction device including a conduit, a crane, a suspension structure and a suspension force detection output mechanism is designed. The suspension force detection output mechanism detects the suspension force of the suspension structure on the conduit in real time to ensure that the length of the conduit in the concrete is within the range of 2m to 5m.
Accurate control of the depth of the conduit burial is achieved, misjudgment is reduced, concrete is not contaminated by mud, and pulling out resistance and construction difficulty is reduced.
Smart Images
Figure CN222923751U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a construction device for cast-in-place concrete piles capable of controlling the buried depth of a conduit. Background Technique
[0002] During the construction of cast-in-place concrete piles, on-site construction personnel need to pour concrete through a conduit. During the pouring process, the conduit needs to be buried in the concrete to a certain depth so that there is always a certain thickness of the first batch of concrete above the newly poured concrete, ensuring that the newly poured concrete does not come into contact with the mud and is not contaminated by the mud. During construction, the minimum value of this depth is generally set to 2 m. If the burial is too shallow, the risk of pulling out the entire conduit and the concrete being contaminated by the mud will increase; the maximum depth is generally set to 5 m. If the burial is too deep, the pipe pulling resistance will be large and it will be difficult to pull out the pipe. Therefore, it is necessary to strictly control the buried depth of the conduit during the concrete pouring process. Since the conduit is buried in the concrete, it is not easy to detect the buried depth of the conduit, and it is necessary to judge according to the volume of the poured concrete and the manual measurement of the position of the concrete surface, which is prone to errors. Content of the Utility Model
[0003] The utility model aims to provide a construction device for cast-in-place concrete piles capable of controlling the buried depth of a conduit, which can conveniently know whether the buried depth of the conduit is within the set range, and solves the problem that the existing buried depth of the conduit cannot be conveniently known.
[0004] The above technical problems are solved by the following technical solutions: a concrete bored pile construction device capable of controlling the buried depth of a conduit, comprising a conduit for conveying concrete into the pile hole, a crane for lifting the conduit from the pile hole, and a suspension structure for hanging the conduit in the pile hole, characterized in that it also includes a suspension force detection output mechanism, the conduit is composed of a plurality of pipe sections connected together, both ends of the pipe sections are provided with flanges with bolt holes, adjacent pipe sections are fixed together by bolts passing through the bolt holes on the two pipe sections and then connected with nuts, the length of the pipe section is 3 meters, and a resistance increasing cap is connected to the second pipe section from the bottom to the top, the distance between the resistance increasing cap and the lower end face of the conduit is 5 meters, the resistance increasing cap is sealed and fixed on the conduit, and the suspension force detection output mechanism is used to detect the real-time suspension force of the suspension structure on the conduit. The process of pouring concrete tank piles is as follows: A. Putting in the guide tube: dropping the guide tube into the pile hole to the set depth through the crane and then suspending it in the pile hole through the suspension structure; B. Grouting: injecting concrete into the pile hole through the guide tube and detecting the real-time suspension force of the suspension structure on the guide tube through the suspension force detection output mechanism, and stopping the injection of concrete when the real-time suspension force of the suspension structure on the guide tube detected by the suspension force detection output mechanism drops to the set value; C. Lifting the guide tube: lifting the guide tube by a pipe section through the crane and removing the topmost pipe section; repeating steps B and C until the concrete pouring in the pile hole is completed. It can conveniently and accurately make the length of the guide tube in the concrete in the process of attention within the required range.
[0005] Preferably, the vertical projection area of the resistance-increasing cap is more than 5 times the cross-sectional area of the conduit, so that when the concrete rises to support the resistance-increasing cap, the suspension force of the suspension structure on the conduit decreases greatly, thereby avoiding misjudgment.
[0006] Preferably, a steel cage is provided in the pile hole, and the distance between the edge of the resistance-increasing cover and the inner circumference of the steel cage is more than 200 mm, so as to avoid collision and friction between the resistance-increasing cover and the steel cage when moving, thereby affecting the accuracy.
[0007] Preferably, the resistance increasing cap is a cap-shaped structure with an upper surface convex upward and a lower surface concave upward, which can increase the force of the resistance increasing cap to lift the resistance increasing cap when the rising concrete contacts the resistance increasing cap, thereby improving the sensitivity and making it more accurate to judge whether the concrete height reaches the resistance increasing cap by the change of force.
[0008] Preferably, the suspension force detection output mechanism includes an output terminal and an electronic tension meter, one end of the electronic tension meter is connected to the suspension part of the crane, and the other end is connected to the upper end of the guide tube, the electronic tension meter is electrically connected to the output terminal, and the electronic tension meter constitutes the suspension structure. A specific technical solution of the suspension force detection output mechanism and the suspension structure is provided, which has a compact structure, but the crane needs to be loaded for a long time, is easily damaged, and has high energy consumption.
[0009] Preferably, it also includes a cover plate covering the pile hole, the cover plate is provided with a limit hole, the upper end of the conduit is inserted into the limit hole, and the limit may be used to prevent the conduit from deviating, so that the conduit deviates beyond the standard and causes the resistance-increasing hood to collide with the steel cage, thus affecting the judgment accuracy.
[0010] Preferably, a limiting convex ring is provided on the lower surface of the cover plate and penetrates the pile hole, and the limiting convex ring cooperates with the peripheral wall of the pile hole to limit the horizontal movement of the cover plate, thereby preventing the overall horizontal displacement.
[0011] Preferably, the suspension structure includes a rotating ring and a plurality of support frames distributed along the circumference of the limiting hole, the support frame including a swing arm rotatably connected to the cover plate at one end through a vertical shaft head, a vertical support head connected to the other end of the swing arm, and a shaft head gear connected to the vertical shaft head, the rotating ring is coaxial with the limiting hole, an inner gear ring is provided on the inner circumference of the rotating ring, and an outer gear ring is provided on the outer circumference, the shaft head gear is meshed with the inner gear ring, the swing arm is used to abut against the outer circumference of the conduit passing through the limiting hole to horizontally limit the conduit, the flange can pass through the limiting hole, the outer gear ring is meshed with the driving gear, the driving gear is connected to the driving motor connected to the cover plate, a pressure sensor is provided on the vertical support head, when the swing arm abuts against the outer circumference of the conduit passing through the limiting hole, the vertical support head is supported on the lower surface of the flange through the pressure sensor, and the swing arm can swing to be offset from the limiting hole to avoid interfering with the flange passing through the limiting hole. The process of putting the catheter on the platform is: the driving motor drives the driving gear to rotate in one direction, the driving gear drives the rotating ring to rotate, the rotating ring drives the shaft head gear to rotate, the shaft head gear drives the vertical shaft head to drive the swing arm to swing away from the catheter until the vertical support head is staggered with the flange and does not interfere with the lifting of the catheter, lift the catheter to the flange of the pipe section located below the cover plate adjacent to the cover plate is higher than the pressure sensor, and the driving motor drives the driving gear to rotate in the other direction until the swing arm abuts against the catheter, release the lifting of the catheter, and the catheter descends and is supported on the pressure sensor through the flange. It can not only accurately limit the catheter, but also will not interfere with the flange through the limiting hole, and it is convenient and fast to support and separate the flange plate. The crane does not require long-term load and saves energy.
[0012] Preferably, the swing arm is in contact and abutted against the catheter surface, and the contact surface between the swing arm and the guide tube is located on the side of the vertical plane determined by the axis of the vertical shaft head and the rear end of the contact position between the swing arm and the guide tube in the direction of the swing arm rotating away from the catheter, facing the direction of the swing arm rotating away from the catheter. The limit is accurate and reliable.
[0013] Preferably, the external gear ring and the driving gear are in helical gear engagement. The rotating ring can be supported by the teeth of the gear and the gear ring, preventing the rotating ring from falling without support.
[0014] The utility model has the following beneficial effects:
[0015] (1) The design of the utility model is novel and reasonable. The timing of pipe extraction can be accurately determined by the change of the dynamometer value, without the need to judge the timing according to the volume of concrete poured and the artificial measurement of the concrete surface position, reducing misjudgment.
[0016] (2) The distance between the blocking cover and the bottom end of the catheter is 5m, and each time one pipe section (3m) is pulled out, accurately ensuring that the depth of the catheter in the concrete is between 2m and 5m, eliminating the risks brought by too deep or too shallow embedding.
[0017] (3) Under the condition of short piles, when the catheter is short and its self-weight is small, the concrete catheter can be automatically lifted under the upward lifting force of the blocking cover, reducing the pipe extraction operation time of construction workers and accelerating the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the front view schematic diagram of the first embodiment of the utility model;
[0019] Figure 2 is the front view schematic diagram of the second embodiment of the utility model;
[0020] Figure 3 is Figure 2 the partial enlarged schematic diagram at A of
[0021] Figure 4 is the top view schematic diagram of the second embodiment of the utility model;
[0022] Figure 5 is Figure 4 the partial enlarged schematic diagram at B of
[0023] In the figure: pile hole 1, conduit 2, crane 3, swing arm 4, suspension force detection and output mechanism 5, pipe section 6, bolt hole 7, flange 8, resistance increasing cap 9, steel reinforcement cage 10, output terminal 11, electronic tensiometer 12, suspension cable 13, cover plate 14, limit hole 15, limit convex ring 16, rotating ring 17, support frame 18, vertical shaft head 19, vertical support head 20, shaft head gear 21, fixing frame 22, driving gear 23, driving motor 24, pressure sensor 25, the rear end of the contact between the swing arm and the guiding pipe in the direction of the swing arm rotating away from the conduit, vertical plane 27, flange of the upper end of the pipe section adjacent to the cover plate and located below the cover plate 28. Detailed implementation mode
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0025] Embodiment 1, see Figure 1 , a construction device for a concrete cast-in-place pile capable of controlling the embedding depth of the conduit, including a conduit 2 for extending into the pile hole 1 to convey concrete into the pile hole, a crane 3 for lifting the conduit out of the pile hole, and a suspension structure for suspending the conduit in the pile hole. It also includes a suspension force detection and output mechanism 5. The conduit is composed of a plurality of pipe sections 6 connected together. The two ends of the pipe section are provided with flanges 8 provided with bolt holes 7 (see Figure 5 ). Adjacent pipe sections are fixed together by bolts passing through the bolt holes on the two pipe sections and then connecting with nuts. The length of the pipe section is 3 meters. A resistance increasing cap 9 is connected to the second pipe section from the bottom up. The distance between the resistance increasing cap and the lower end face of the conduit is 5 meters. The resistance increasing cap is hermetically sleeved and fixed on the conduit. The suspension force detection and output mechanism is used to detect the real-time suspension force of the suspension structure on the conduit. The vertical projection area of the resistance increasing cap is more than 5 times the cross-sectional area of the conduit. There is a steel reinforcement cage 10 in the pile hole. The distance between the edge of the resistance increasing cap and the inner peripheral surface of the steel reinforcement cage is more than 200 mm. The resistance increasing cap is a cover-shaped structure with an upwardly convex upper surface and a downwardly concave lower surface. The suspension force detection and output mechanism includes an output terminal 11 (a display alarm) and an electronic tensiometer 12. One end of the electronic tensiometer is connected to the suspension part of the crane, and the other end is connected to the upper end of the conduit through a suspension cable 13. The electronic tensiometer is electrically connected to the output terminal, and the electronic tensiometer constitutes the suspension structure. It also includes a cover plate 14 covering the pile hole. The cover plate is provided with a limit hole 15. The upper end of the conduit is inserted into the limit hole, and the limit may be used to prevent the conduit from shifting.
[0026] The process of pouring a concrete cast-in-place pile is as follows: A. Insert the conduit: Drop the guide conduit into the pile hole by a crane to a set depth and then suspend it in the pile hole through a suspension structure; B. Grout: Inject concrete into the pile hole through the conduit and use a suspension force detection and output mechanism to detect the real-time suspension force of the suspension structure on the conduit. When the real-time suspension force of the suspension structure on the conduit detected by the suspension force detection and output mechanism drops by a set value, the suspension force detection and output mechanism gives an alarm, and at this time, stop injecting concrete; C. Lift the conduit: Lift the conduit by a crane by a distance of one pipe joint and remove the uppermost pipe joint; Repeat steps B and C until the concrete pouring in the pile hole is completed. The set value can be selected by counting the use of the present utility model once.
[0027] Embodiment 2, the difference from Embodiment 1 is as follows:
[0028] A limiting convex ring 16 penetrating into the pile hole is provided on the lower surface of the cover plate, and the limiting convex ring cooperates with the peripheral wall of the pile hole to limit the horizontal movement of the cover plate. The suspension structure includes a rotating ring 17 and a plurality of support frames 18 distributed circumferentially along the limiting hole. The support frame includes a swing arm 4 rotatably connected to the cover plate at one end through a vertical shaft head 19, a vertical support head 20 connected to the other end of the swing arm, and an axial head gear 21 connected to the vertical shaft head. The upper end of the vertical shaft head is connected to the cover plate through a fixing frame 22. The rotating ring is coaxial with the limiting hole. An internal gear ring is provided on the inner peripheral surface of the rotating ring, and an external gear ring is provided on the outer peripheral surface. The axial head gear meshes with the internal gear ring. The swing arm is used to abut against the outer peripheral surface of the conduit penetrating into the limiting hole to horizontally limit the conduit. The flange can pass through the limiting hole. The external gear ring meshes with a driving gear 23. The external gear ring and the driving gear are in a helical tooth fit, that is, the external gear ring is a helical external gear ring and the driving gear is a helical gear. The driving gear is connected to a driving motor 24 connected to the cover plate. A pressure sensor 25 is provided on the vertical support head. When the swing arm abuts against the outer peripheral surface of the conduit penetrating into the limiting hole, the vertical support head supports on the lower surface of the flange through the pressure sensor. The swing arm can swing out of alignment with the limiting hole to avoid interfering with the flange passing through the limiting hole. The swing arm is in surface contact and abuts against the conduit. The rear end 26 of the contact portion of the swing arm and the guide conduit in the direction of the swing arm rotating away from the conduit, the axis of the vertical shaft head and the center line of the limiting hole are located in the same vertical plane 27. The contact surface of the swing arm and the conduit is located on one side of the vertical plane 27 in the direction of the swing arm rotating away from the conduit. The direction in which the swing arm rotates away from the conduit is Figure 5 the C direction in. The pressure sensor and the output terminal constitute a suspension force detection and output mechanism.
[0029] The process of lifting the upper conduit is as follows: Drive the driving gear in one direction by the driving motor (i.e., Figure 5Rotate in the D direction), the driving gear drives the rotating ring to rotate, the rotating ring drives the gear at the head of the shaft to rotate, the gear at the head of the shaft drives the vertical shaft head to drive the swing arm to swing away from the catheter until the vertical support head is staggered from the flange and does not interfere with the upward movement of the catheter. Lift the catheter until the flange 28 at the upper end of the pipe section located below the cover plate adjacent to the cover plate is higher than the pressure sensor. Drive the driving gear to rotate in the other direction until the swing arm abuts against the catheter, release the upward lift of the catheter, and the catheter descends and is supported on the pressure sensor through the flange.
Claims
1. A concrete cast-in-place pile construction device capable of controlling the buried depth of a conduit, comprising a conduit for conveying concrete into the pile hole, a crane for lifting the conduit from the pile hole, and a hanging structure for hanging the conduit in the pile hole, characterized in that: It also includes a suspension force detection output mechanism, the conduit is composed of a plurality of pipe sections connected together, both ends of the pipe sections are provided with flanges with bolt holes, adjacent pipe sections are fixed together by bolts passing through the bolt holes on the two pipe sections and then connected with nuts, the length of the pipe section is 3 meters, the second pipe section from the bottom to the top is connected with a resistance increasing cap, the distance between the resistance increasing cap and the lower end face of the conduit is 5 meters, the resistance increasing cap sealing sleeve is provided and fixed on the conduit, and the suspension force detection output mechanism is used to detect the real-time suspension force of the suspension structure on the conduit.
2. A concrete bored pile construction device capable of controlling the buried depth of a conduit according to claim 1, characterized in that: The vertical projection area of the resistance increasing cap is more than 5 times the cross-sectional area of the conduit.
3. A concrete bored pile construction device capable of controlling the buried depth of a conduit according to claim 1 or 2, characterized in that: A steel cage is arranged in the pile hole, and the distance between the edge of the resistance-increasing cover and the inner circumference of the steel cage is more than 200 mm.
4. A concrete bored pile construction device capable of controlling the buried depth of a conduit according to claim 1 or 2, characterized in that: The resistance increasing cover is a cover-shaped structure with an upper surface convex upward and a lower surface concave upward.
5. A concrete bored pile construction device capable of controlling the buried depth of a guide tube according to claim 1 or 2, characterized in that: The suspension force detection output mechanism includes an output terminal and an electronic force gauge, one end of the electronic force gauge is connected to the suspension part of the crane, and the other end is connected to the upper end of the conduit. The electronic force gauge is electrically connected to the output terminal, and the electronic force gauge constitutes the suspension structure.
6. A concrete bored pile construction device capable of controlling the buried depth of a conduit according to claim 1 or 2, characterized in that: It also includes a cover plate covering the pile hole, the cover plate is provided with a limit hole, the upper end of the catheter is inserted into the limit hole, and the limit may be used to prevent the catheter from deviating.
7. A concrete bored pile construction device capable of controlling the buried depth of a guide tube according to claim 6, characterized in that: A limiting convex ring penetrating the pile hole is provided on the lower surface of the cover plate, and the limiting convex ring cooperates with the peripheral wall of the pile hole to limit the horizontal movement of the cover plate.
8. A concrete bored pile construction device capable of controlling the buried depth of a guide tube according to claim 6, characterized in that: The suspension structure includes a rotating ring and a plurality of support frames distributed along the circumference of the limiting hole, the support frame includes a swing arm rotatably connected to the cover plate at one end through a vertical shaft head, a vertical support head connected to the other end of the swing arm, and a shaft head gear connected to the vertical shaft head. The rotating ring is coaxial with the limiting hole, an inner gear ring is provided on the inner circumference of the rotating ring, and an outer gear ring is provided on the outer circumference, the shaft head gear is meshed on the inner gear ring, the swing arm is used to abut against the outer circumference of the conduit passing through the limiting hole to horizontally limit the conduit, the flange can pass through the limiting hole, the outer gear ring is meshed with the driving gear, and the driving gear is connected to the driving motor connected to the cover plate, a pressure sensor is provided on the vertical support head, when the swing arm abuts against the outer circumference of the conduit passing through the limiting hole, the vertical support head is supported on the lower surface of the flange through the pressure sensor, and the swing arm can swing to be offset from the limiting hole to avoid interfering with the flange passing through the limiting hole.
9. A concrete bored pile construction device capable of controlling the buried depth of a guide tube according to claim 8, characterized in that: The swing arm is in contact with the guide tube surface and abuts against it, and the contact surface between the swing arm and the guide tube is located on the side of the vertical plane determined by the rear end of the swing arm at the contact point between the swing arm and the guide tube in the direction of rotation of the swing arm in the direction of separation from the guide tube and the axis of the vertical shaft head, facing the direction of rotation of the swing arm in the direction of separation from the guide tube.
10. A concrete bored pile construction device capable of controlling the buried depth of a guide tube according to claim 8, characterized in that: The outer gear ring and the driving gear are matched with helical teeth.