Positioning and guiding device for precast pile construction

Abstract

The utility model discloses a positioning and guiding device for precast pile construction is used for the positioning and guiding of precast pile, and the positioning and guiding device comprises a base frame, lifting guide columns and adjustable positioning sleeves, the lifting guide columns are respectively arranged at the top of the four corner positions of the base frame, the adjustable positioning sleeve comprises lower positioning rings and upper positioning rings, the lower positioning ring and the upper positioning ring are all composed of four petal bodies and four hydraulic telescopic rods respectively used for driving the radial movement of the four petal bodies, the outer wall of the petal body is connected with the rod body of the hydraulic telescopic rod, the cylinder body of the hydraulic telescopic rod of the lower positioning ring is fixedly connected with the base frame through a fixed plate, and the cylinder body of the hydraulic telescopic rod of the upper positioning ring is connected with two hydraulic telescopic devices respectively installed at the bottom of two adjacent lifting guide columns through a moving plate. The utility model has the advantages of simple structure, convenient operation, can significantly improve the precast pile construction efficiency and the perpendicularity precision, and is suitable for the precast pile construction of different diameters and lengths.

Description

Technical Field

[0001] This utility model relates to the technical field of precast pile construction equipment, and in particular to a positioning and guiding device for precast pile construction. Background Technology

[0002] In the field of building foundation construction, precast piles have become one of the mainstream technologies for pile foundation engineering due to their advantages such as stable quality from factory production, high on-site construction efficiency, and strong single pile bearing capacity. However, in the traditional precast pile construction process, the verticality control and precise positioning of the pile body still heavily rely on manual operation, which has significant technical defects: 1. Low accuracy and poor stability of manual positioning: Construction personnel need to observe the posture of the pile through optical instruments (such as theodolites and levels) or visual methods, which are easily affected by factors such as on-site lighting conditions, wind disturbance and ground micro-deformation; especially in soft soil foundations or high load conditions, the deviation of the pile during the sinking process is difficult to correct in real time, resulting in the verticality deviation exceeding the allowable range of the specifications, which directly affects the bearing capacity of the pile foundation and induces structural safety hazards; 2. Insufficient adaptability of the guiding device: Traditional mechanical guiding frames use fixed aperture and limiting structure, which can only match a single specification of pile type; when the project needs to switch to precast piles of different diameters or lengths, the entire guiding equipment must be disassembled and replaced, which significantly increases the construction period and equipment cost; although the existing adjustable guiding frame can adjust the opening and closing degree by bolts, the adjustment process is cumbersome and lacks standardized positioning benchmarks, making it difficult to ensure consistency between multiple pile positions; 3. Lack of dynamic monitoring and feedback mechanism: The current process lacks the ability to monitor the pile driving trajectory in real time; the data on pile position and inclination angle rely on phased manual sampling, which has serious lag; when deviation is detected, the pile has already penetrated deep into the soil layer and is difficult to correct, often requiring interruption of construction for complex remedial measures (such as pile extraction and re-driving), resulting in project delays and soaring costs. Summary of the Invention

[0003] The purpose of this utility model is to provide a positioning and guiding device for precast pile construction, which addresses the shortcomings of the prior art. The positioning and guiding device consists of a base frame, a lifting guide column, and an adjustable positioning sleeve. The adjustable positioning sleeve consists of a lower positioning ring and an upper positioning ring. The adjustable positioning sleeve can be used for positioning precast piles of different diameters and lengths, effectively improving the construction efficiency and verticality accuracy of precast piles.

[0004] The objective of this utility model is achieved through the following technical solution: A positioning and guiding device for precast pile construction is disclosed, used for positioning and guiding the precast pile. The positioning and guiding device includes a base frame, lifting guide columns, and an adjustable positioning sleeve. The lifting guide columns are respectively located at the top of the four corners of the base frame. The adjustable positioning sleeve includes a lower positioning ring and an upper positioning ring. Both the lower and upper positioning rings are composed of four petals and four hydraulic telescopic rods for driving the four petals to move radially. The outer wall of the petal is connected to the rod body of the hydraulic telescopic rod. The cylinder of the hydraulic telescopic rod of the lower positioning ring is fixedly connected to the base frame through a fixing plate. The cylinder of the hydraulic telescopic rod of the upper positioning ring is connected to two hydraulic telescopic devices respectively installed at the bottom of two adjacent lifting guide columns through a moving plate.

[0005] The tops of two adjacent lifting guide columns are connected by a connecting beam, and an electric hoist is provided at the bottom of the connecting beam.

[0006] The inner wall of the valve is provided with an elastic cushioning pad.

[0007] Each of the four corners of the base frame is provided with a support leg, the bottom of the support leg is equipped with a caster wheel, and the side of the support leg is provided with a hydraulic jack.

[0008] A ring laser emitter is installed on the outer wall of the precast pile, and a laser ranging module that cooperates with the ring laser emitter is embedded in the inner wall of the lobe of the upper positioning ring.

[0009] An angle sensor is installed on the base frame.

[0010] The advantages of this utility model are: simple structure, convenient operation, can significantly improve the construction efficiency and verticality accuracy of precast piles, and is suitable for the construction of precast piles of different diameters and lengths. Attached Figure Description

[0011] Figure 1 This is a front elevation view of the positioning and guiding device of this utility model; Figure 2 This is a plan view of the installation of the lower positioning ring of this utility model; Figure 3 This is a side elevation view of the positioning and guiding device of this utility model; like Figures 1-3 As shown in the figure, the markings represent: Base frame 10, lifting guide column 20, adjustable positioning sleeve 30, lower positioning ring 301, petal body 3011, hydraulic telescopic rod 3012, elastic buffer pad 3013, through hole 3014, fixed plate 3015, movable plate 3016, hydraulic telescopic device 3017, fixed frame 3018, upper positioning ring 302, connecting beam 40, electric hoist 50, outrigger 60, caster wheel 601, hydraulic jack 602. Detailed Implementation

[0012] The features of this utility model and other related features will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art: Example: Figures 1-3 As shown, this embodiment relates to a positioning and guiding device for precast pile construction. The positioning and guiding device mainly includes a base frame 10, lifting guide columns 20, and adjustable positioning sleeves 30. The base frame 10 is a square frame welded from Q345B steel. The lifting guide columns 20 are located at the top of the four corners of the base frame 10 (a total of four lifting guide columns 20). The lifting guide columns 20 are square structures, consisting of a square outer cylinder, a square inner cylinder, and a lifting device (such as a hydraulic jack). The square inner cylinder and the lifting device are both installed inside the square outer cylinder. The top of the square inner cylinder extends to the outside of the square outer cylinder. The lifting device is located at the bottom of the square outer cylinder, and the bottom of the square inner cylinder is connected to the lifting device. The lifting device drives the square inner cylinder to move up and down. The tops of two adjacent lifting guide columns 20 are connected by connecting beams 40 (a total of four connecting beams 40). An electric hoist 50 is installed at the bottom of the middle of the connecting beams 40. The lifting guide columns 20 are used to adjust the height of the electric hoist 50 so that the electric hoist 50 can lift the precast piles.

[0013] The adjustable positioning sleeve 30 includes a lower positioning ring 301 and an upper positioning ring 302. Both the lower and upper positioning rings 301 and 302 consist of four petals 3011 and four hydraulic telescopic rods 3012 for driving the radial movement of the four petals 3011. Each petal 3011 is a quarter-circle and is used to clamp precast piles of different diameters. An elastic buffer pad 3013 is provided on the inner wall of each petal 3011. The elastic buffer pad 3013 is made of polyurethane elastic material with a thickness of 5mm, and its surface has anti-slip textures for cushioning and anti-slip function. The outer wall of each petal 3011 is connected to the rod body of the hydraulic telescopic rod 3012. The cylinder of the hydraulic telescopic rod 3012 of the lower positioning ring 301 is fixed to the base frame 10 via a fixing plate 3015. The lower positioning ring 301's hydraulic telescopic rod 3012 is connected to the fixed plate 3015 via a diagonal brace for reinforcement. The upper positioning ring 302's hydraulic telescopic rod 3012 is connected to two hydraulic telescopic devices 3017 respectively installed at the bottom (i.e., square outer cylinder) of two adjacent lifting guide columns 20 via a moving plate 3016. The hydraulic telescopic devices 3017 are connected to the lifting guide columns 20 via a fixed frame 3018. The position of the upper positioning ring 302 is adjusted by the hydraulic telescopic devices 3017, thereby adjusting the distance between the upper positioning ring 302 and the lower positioning ring 301 to accommodate precast piles of different lengths. The upper positioning ring 302's hydraulic telescopic rod 3012 is connected to the moving plate 3016 via a diagonal brace for reinforcement.

[0014] like Figures 1-3 As shown, each of the four corners of the base frame 10 is provided with a support leg 60. The bottom of the support leg 60 is equipped with a caster wheel 601 for movement. The side of the support leg 60 is provided with a hydraulic jack 602. An angle sensor is provided on the base frame 10. When the base frame 10 moves into position, the hydraulic jack 602 extends downward to touch the ground, so that the base frame 10 is suspended in the air, thereby fixing the base frame 10. According to the reading of the angle sensor, the height of each hydraulic jack 602 can be adjusted to keep the base frame 10 horizontal.

[0015] like Figures 1-3 As shown, a ring laser emitter is installed on the outer wall of the precast pile. A laser ranging module that cooperates with the ring laser emitter is embedded in the inner wall of the lobe 3011 of the upper positioning ring 302. Both the lobe 3011 and the elastic buffer pad 3013 of the upper positioning ring 302 have through holes 3014 (the through holes 3014 penetrate the elastic buffer pad 3013 but not the lobe 3011), allowing the laser from the ring laser emitter to be received by the laser ranging module. This allows the distance and angle between the upper positioning ring 302 and the precast pile to be obtained, thus enabling the upper positioning ring 302 to position the precast pile and ensuring the verticality of the precast pile. In this embodiment, the laser ranging module has an accuracy of ±1mm, and the ring laser emitter is evenly distributed at 15° intervals.

[0016] In addition, the positioning and guiding device also includes a control system, which is integrated into the control box of the base frame 10. The control system is electrically connected to the hydraulic telescopic rod 3012, the hydraulic telescopic device 3017, the electric hoist 50, the hydraulic jack 602 and the laser ranging module.

[0017] like Figures 1-3 As shown, this embodiment also includes the following construction methods: 1. Transport the positioning and guiding device to the construction site, with casters 601 assisting in movement and hydraulic jacks 602 fixing the base frame 10.

[0018] 2. Based on the diameter of the precast pile (400-800mm), the initial diameter of the adjustable positioning sleeve 30 is set through the control system, and the hydraulic telescopic device 3017 adjusts the distance between the upper positioning ring 302 and the lower positioning ring 301.

[0019] 3. The electric hoist 50 lifts the precast piles. The precast piles pass through the upper positioning ring 302 and the lower positioning ring 301 in sequence. The laser ranging module detects the position of the pile body and automatically calibrates it to the center position.

[0020] 4. During the pile driving process, the hydraulic telescopic device 3017 drives the upper positioning ring 302 to move downward (together with the precast pile); the angle sensor and laser ranging module provide real-time feedback data, and the control system dynamically adjusts the height of the outrigger 60 and the angle of the adjustable positioning sleeve 30 to ensure that the verticality error of the pile body is ≤0.5%.

[0021] The beneficial technical effects of this embodiment are: simple structure, convenient operation, can significantly improve the construction efficiency and verticality accuracy of precast piles, and is suitable for the construction of precast piles of different diameters and lengths.

[0022] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A positioning and guiding device for precast pile construction, used for positioning and guiding the precast pile, characterized in that... The positioning and guiding device includes a base frame, lifting guide columns, and an adjustable positioning sleeve. The lifting guide columns are respectively located at the top of the four corners of the base frame. The adjustable positioning sleeve includes a lower positioning ring and an upper positioning ring. Both the lower and upper positioning rings consist of four petals and four hydraulic telescopic rods for driving the four petals to move radially. The outer wall of each petal is connected to the rod of the hydraulic telescopic rod. The cylinder of the hydraulic telescopic rod of the lower positioning ring is fixedly connected to the base frame through a fixing plate. The cylinder of the hydraulic telescopic rod of the upper positioning ring is connected to two hydraulic telescopic devices respectively installed at the bottom of two adjacent lifting guide columns through a moving plate.

2. The positioning and guiding device for precast pile construction according to claim 1, characterized in that The tops of two adjacent lifting guide columns are connected by a connecting beam, and an electric hoist is provided at the bottom of the connecting beam.

3. The positioning and guiding device for precast pile construction as described in claim 1, characterized in that... The inner wall of the valve is provided with an elastic cushioning pad.

4. The positioning and guiding device for precast pile construction as described in claim 1, characterized in that... Each of the four corners of the base frame is provided with a support leg, the bottom of the support leg is equipped with a caster wheel, and the side of the support leg is provided with a hydraulic jack.

5. A positioning and guiding device for precast pile construction as described in claim 1, characterized in that... A ring laser emitter is installed on the outer wall of the precast pile, and a laser ranging module that cooperates with the ring laser emitter is embedded in the inner wall of the lobe of the upper positioning ring.

6. The positioning and guiding device for precast pile construction according to claim 1, characterized in that An angle sensor is installed on the base frame.

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