Pipe pile perpendicularity measuring device

Abstract

The utility model discloses a tubular pile verticality measuring device, which comprises a main frame with a traction rope at the top, and is characterized in that the main frame is provided with a laser assembly used for emitting laser upwards along the vertical direction and a positioning mechanism used for enabling a laser emitting point of the laser assembly to coincide with the central axis of a tubular pile; the measuring plate is horizontally arranged at the top of the pipe pile and used for receiving laser. The laser assembly is used for emitting laser upwards in the vertical direction, the measuring plate is used for receiving the laser, external interference is reduced, operation is convenient, and the measuring accuracy and efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a pipe pile verticality measuring device. Background Art

[0002] In the construction of urban rail transit, static prestressed pipe piles are mainly used for the construction of foundation support and bearing structures. This type of pipe pile is a prestressed concrete pile with high bearing capacity and good stability. It is suitable for buildings and structures that bear heavy traffic loads. Static prestressed pipe piles are widely used due to their advantages such as short pressing period, low noise, high pile bearing capacity, flexible pile length specifications, and high construction efficiency.

[0003] In order to ensure the accuracy of pipe pile installation and the stability of the structure, there are certain requirements for the verticality of static pressure prestressed pipe piles during construction. Verticality refers to the deviation of pipe piles from the ideal vertical line when they are installed. This parameter is crucial to ensure the bearing capacity and overall safety of the structure. For example, patent document CN113624160A discloses a pipe pile verticality measuring device including a double-stage cylindrical cage, a reflector, a measuring plate, a plumb bob and a linear light emitter; the double-stage cylindrical cage is composed of a fixed-axis cylindrical cage, an along-axis cylindrical cage and a number of support rods; the reflector is fixedly installed at the bottom of the along-axis cylindrical cage, the measuring plate is fixedly installed at the top of the fixed-axis cylindrical cage, the connecting line of the plumb bob passes through the center hole of the measuring plate and the center circle of the top of the fixed-axis cylindrical cage from bottom to top and is connected to the winding wheel fixedly installed on the first disc frame outside the fixed-axis cylindrical cage, and the linear light emitter includes a straight tube and a light emitter, which is installed at the cone tip position of the plumb bob; when measuring, the verticality can be calculated by observing the light spot of the reflected light on the measuring plate.

[0004] In the above scheme, a plumb bob and a linear light transmitter are used for measurement. It is necessary to ensure that the plumb bob is in an absolutely stationary state while observing the light spot of the reflected light. However, due to the high instability of the plumb bob, the measurement error is large and the measurement efficiency is low. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a measuring device for measuring the verticality of a pipe pile, which can improve the detection accuracy and detection efficiency.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A device for measuring the verticality of a pipe pile comprises a main frame with a traction rope on the top, a laser assembly for emitting laser upward in a plumb direction, and a positioning mechanism for making the laser emission point of the laser assembly coincide with the central axis of the pipe pile; and a measuring plate horizontally arranged on the top of the pipe pile for receiving the laser.

[0008] As a further improvement of the above technical solution:

[0009] The positioning mechanism includes a central connecting rod coaxially fixedly connected to the bottom of the main frame, and a frame leg movably connected to the central connecting rod so as to swing up and down. The ends of the frame legs are provided with walking wheels. The frame legs are provided with at least three legs, and the frames are evenly spaced along the circumference of the central connecting rod.

[0010] A sleeve is arranged between the central connecting rod and the frame legs to limit the circumferential movement of the frame legs.

[0011] A handle is hinged on the main frame, the traction rope is fixedly connected to the top of the handle, and a scale is arranged on the traction rope.

[0012] When the pipe pile verticality measuring device is in a suspended state, the height from the top of the handle to the bottom of the frame leg is set to h, and the scale size on the traction rope is coded starting from h.

[0013] Each of the frame legs is a telescopic rod with adjustable length.

[0014] The scale on the traction rope is coded starting from 0.

[0015] The laser assembly includes a laser and a counterweight ball for automatically adjusting the laser to emit laser upward in a vertical direction; the laser emission port is connected to the middle of the top surface of the main frame with an upward ball hinge, and the counterweight ball is fixedly connected to the lower end of the laser.

[0016] A level sensor is arranged between the laser and the counterweight ball to trigger the laser to emit laser light when the laser is in a horizontal state, and the level sensor is connected to the laser signal.

[0017] A cross line is provided in the middle of the measuring plate. Compared with the prior art, the advantages of the utility model are:

[0018] The utility model proposes a pipe pile verticality measuring device. When measuring the verticality of the pipe pile, the main frame is placed in the pipe pile until it is lowered to the bottom of the pipe pile, and the laser emission point of the laser component is made to coincide with the central axis of the pipe pile under the action of the positioning mechanism, so that the laser component can emit laser upward from the axis of the bottom end of the pipe pile, and then a measuring plate is set on the top of the pipe pile to detect the offset distance of the laser projection point on the measuring plate relative to the axis of the pipe pile. Combined with the length of the measured pipe pile, the verticality of the pipe pile can be calculated. The present application uses a laser component to emit laser upward in a plumb direction, and uses a measuring plate to receive laser, which reduces the influence of external interference, is easy to operate, and helps to improve the accuracy and efficiency of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 11 is a schematic front view of the structure of the pipe pile verticality measuring device in the embodiment (the measuring plate is not shown).

[0020] Figure 2 1. It is a schematic front view of the structure of the pipe pile verticality measuring device in the embodiment when the legs are on the ground and spread out (the measuring plate is not shown).

[0021] Figure 3 1 is a schematic bottom view of the structure of the pipe pile verticality measuring device in an embodiment (the measuring plate is not shown).

[0022] Figure 4 2 is a schematic top view of the structure of the measuring plate in the embodiment.

[0023] Figure 5 1 is a schematic front view of the structure of the laser assembly in the embodiment.

[0024] Figure 6 1 is a first schematic diagram of the working simulation of the pipe pile verticality measuring device in the embodiment.

[0025] Figure 7 2 is a second schematic diagram of the working simulation of the pipe pile verticality measuring device in the embodiment.

[0026] Figure 8 3 is a third schematic diagram of the working simulation of the pipe pile verticality measuring device in the embodiment.

[0027] Fig. 9 Schematic diagram of the working simulation of the measuring plate in the embodiment.

[0028] The symbols in the figure represent:

[0029] 1. Main frame; 11. Groove; 2. Traction rope; 3. Positioning mechanism; 31. Center connecting rod; 32. Frame leg; 33. Sleeve; 34. Travel wheel; 4. Laser assembly; 41. Laser; 411. Spherical part; 412. Laser emission port; 42. Counterweight ball; 43. Level sensor; 44. Ball; 5. Measuring plate; 51. Cross line; 52. Laser projection point; 6. Pipe pile; 7. Handle. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 5As shown, the pipe pile verticality measuring device of this embodiment includes a main frame 1, a traction rope 2 for dropping the main frame 1 to the bottom of the pipe pile 6 is arranged on the top of the main frame 1, a positioning mechanism 3 is arranged on the main frame 1 so that the main frame 1 can be coaxial with the pipe pile 6 after being lowered to the bottom of the pipe pile 6, and a laser assembly 4 is arranged on the main frame 1 so that the laser can be emitted upward along the central axis of the main frame 1; and a measuring plate 5 is also arranged horizontally on the top of the pipe pile 6 for receiving the laser. In this structure, when measuring the verticality of the pipe pile 6, the main frame 1 is placed in the pipe pile 6 until it is lowered to the bottom of the pipe pile 6. Through the positioning mechanism 3, the laser emission point of the laser assembly 4 is made to coincide with the central axis of the pipe pile 6. The laser assembly 4 emits laser upward from the axis of the bottom end of the pipe pile 6, and the laser is projected on the measuring plate 5 on the top of the pipe pile 6. The offset distance of the laser projection point 52 relative to the axis of the pipe pile 6 is detected by the measuring plate 5, and the verticality of the pipe pile 6 can be calculated in combination with the distance between the laser emission point and the measuring plate 5. The possibility of external interference is reduced, the operation is convenient, and it helps to improve the accuracy and efficiency of the measurement. In this embodiment, the positioning mechanism 3 includes a central connecting rod 31 coaxially fixedly connected to the bottom of the main frame 1, and a frame leg 32 that can be swung up and down with the central connecting rod 31. The end of the frame leg 32 is provided with a running wheel 34. There are at least three legs 32, and each leg 32 is evenly spaced along the circumference of the central connecting rod 31. In this structure, according to the principle of three-point circle determination, three or more legs 32 are set, and the length and inclination angle of each leg 32 are the same. After ensuring that the running wheels 34 of each leg 32 are in contact with the side wall of the pipe pile 6, it can be ensured that the pipe pile 6 is coaxially arranged with the main frame 1, thereby ensuring the accuracy of the measurement structure. Preferably, there are three legs 32, which have better stability.

[0032] In this embodiment, a sleeve 33 is provided between the central connecting rod 31 and the frame leg 32 to limit the circumferential movement of the frame leg 32. Specifically, the sleeve 33 is fixedly connected to the central connecting rod 31, and a vertical slide groove is provided on the sleeve 33 for the frame leg 32 to swing up and down. Through this structure, the frame leg 32 is prevented from circumferential movement, and the structural stability of the positioning mechanism 3 is improved.

[0033] In this embodiment, a handle 7 is hinged on the main frame 1, and the traction rope 2 is fixedly connected to the top of the handle 7. A scale is provided on the traction rope 2. With this structure, after the main frame 1 lands and completes positioning, the traction rope 2 can be loosened to make the handle 7 swing down, and the traction rope 2 avoids the axis of the pipe pile 6 to avoid interference with the laser, thereby ensuring smooth measurement.

[0034] In this embodiment, each leg 32 is a telescopic rod with adjustable length. Through this structure, the adaptability of the device is improved, and the length of each leg 32 can be adaptively adjusted according to the pipe piles 6 of different sizes.

[0035] In this embodiment, the scale size on the traction rope 2 is coded starting from 0. Through this structure, when the pipe pile verticality measuring device is in a suspended state, the height between the top of the handle 7 and the bottom of the leg 32 is set as h, and the specific value of h can be measured in advance. Combined with the value read from the traction rope 2, the height of the pipe pile 6 can be obtained. It should be noted that when the length of the leg 32 is fixed during the use of the device, the height between the top of the handle 7 and the bottom of the leg 32 when the pipe pile verticality measuring device is in a suspended state is set as h, and the scale size on the traction rope 2 is coded starting from h. Then, when the device contacts the ground, the height of the pipe pile 6 can be directly obtained by reading the size of the traction rope 2, thereby improving the convenience of measurement.

[0036] In this embodiment, the laser assembly 4 includes a laser 41 and a counterweight ball 42 for automatically adjusting the laser 41 to emit laser in the vertical direction; the laser 41 is connected to the middle of the top surface of the main frame 1 by a ball hinge with the emission port facing upward, and the counterweight ball 42 is fixedly connected to the lower end of the laser 41. Specifically, a groove 11 is provided at the center of the top plate of the main frame 1, and the laser 41 is provided with a spherical portion 411 connected to the groove 11 by a ball hinge, and a ball 44 in contact with the spherical portion 411 is provided in the groove 11. The upper end of the spherical portion 411 is provided with a laser emission port 412 facing vertically upward, and the counterweight ball 42 is fixedly connected to the lower end of the spherical portion 411, and the center of gravity of the counterweight ball 42 and the center of gravity of the laser 41 are in the same vertical direction. By modifying the structure, the laser 41 is set at the axis of the main frame 1. By setting a counterweight ball 42 at the bottom of the laser 41, on the one hand, the overall weight of the device is increased, which is convenient for placing the device at the bottom of the pipe pile 6. On the other hand, the laser 41 is connected to the main frame 1 by a ball hinge. Under the action of gravity, the counterweight ball 42 can automatically adjust the emission angle of the laser 41 to ensure that the laser 41 emits laser in the plumb direction to improve the accuracy of verticality measurement.

[0037] In this embodiment, a horizontal sensor 43 is provided between the laser 41 and the counterweight ball 42 for controlling the laser 41 to emit laser light when the laser 41 is in a horizontal state, and the horizontal sensor 43 is connected to the laser 41 by signal. In this structure, a hardware foundation is provided for the function of controlling the laser 41 to emit laser light when the horizontal sensor 43 is in a horizontal state. The specific control procedure is a prior art and will not be described in detail here. When the laser emission direction of the laser 41 is in a plumb state, the horizontal sensor 43 is horizontally arranged between the laser 41 and the counterweight ball 42. When the horizontal sensor 43 is in a horizontal state, a signal is transmitted to control the laser 41 to emit laser light, so as to facilitate confirmation of whether the laser 41 is in a vertical state, thereby improving the convenience of detection and the accuracy of the detection results.

[0038] In this embodiment, a cross line 51 is provided in the middle of the measuring plate 5. This structure facilitates the alignment of the midpoint of the cross line 51 with the center of the pipe pile 6 to measure the offset of the laser, and also facilitates reading the scale value of the traction rope 2 at the measuring plate 5.

[0039] The specific working principle of this device is as follows: Figure 6 As shown, the length of each frame leg 32 is adjusted according to the diameter of the pipe pile 6, and the length and inclination angle of each frame leg 32 are ensured to be the same, and the main frame 1 is lowered by the traction rope 2. Figure 7 As shown, when the main frame 1 touches the bottom, the legs 32 are pressed down by the gravity of the main frame 1 until the running wheels 34 of each leg 32 contact the side wall of the pipe pile 6, so that the laser emission point is coaxial with the pipe pile 6. Figure 8 As shown, loosen the traction rope 2 appropriately to let the handle 7 swing down, place the measuring plate 5 horizontally on the top of the pipe pile 6, the midpoint of the cross line 51 is located at the center of the pipe pile 6, and the end of the traction rope 2 is pressed down under the measuring plate 5. Under the gravity of the counterweight ball 42, the horizontal sensor 43 is automatically adjusted to a horizontal state, triggering the laser 41 to emit a laser upward in the plumb direction, read the laser offset and calculate the height of the pipe pile 6 through the traction rope 2, and then calculate the verticality of the pipe pile 6. After a measurement is completed, the device can be lifted a certain distance by the traction rope 2 and then lowered to the bottom of the pipe pile 6. Repeat the measurement 3 to 4 times, take the average value of the measurement, and ensure the accuracy of the measurement. Fig. 9 As shown, assuming that after the device is in place, the offset of the laser is measured to be 13 mm, and the scale value on the traction rope 2 is read in combination with the height of the device body to obtain the length of the pipe pile 6 to be 15 m. The verticality of the pipe pile 6 is 13 mm / 15 m = 0.86% < 1%, which meets the construction requirements.

[0040] Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A pipe pile verticality measuring device, characterized in that: The invention comprises a main frame (1) with a traction rope (2) on the top, a laser assembly (4) for emitting laser light upward in a vertical direction, and a positioning mechanism (3) for making the laser emission point of the laser assembly (4) coincide with the central axis of a pipe pile (6) installed on the main frame (1); and a measuring plate (5) horizontally arranged on the top of the pipe pile (6) for receiving laser light.

2. The device for measuring the verticality of a pipe pile according to claim 1, characterized in that: The positioning mechanism (3) comprises a central connecting rod (31) coaxially fixedly connected to the bottom of the main frame (1), and a frame leg (32) movably connected to the central connecting rod (31) so as to swing up and down, and a walking wheel (34) is provided at the end of the frame leg (32). There are at least three frames (32), and each frame leg (32) is evenly spaced along the circumference of the central connecting rod (31).

3. The device for measuring the verticality of a pipe pile according to claim 2, characterized in that: A sleeve (33) is provided between the central connecting rod (31) and the frame leg (32) for limiting the circumferential movement of the frame leg (32).

4. The device for measuring the verticality of a pipe pile according to claim 2, characterized in that: A handle (7) is hinged on the main frame (1), the traction rope (2) is fixedly connected to the top of the handle (7), and a scale is provided on the traction rope (2).

5. The device for measuring the verticality of a pipe pile according to claim 4, characterized in that: When the pipe pile verticality measuring device is in a suspended state, the height between the top of the handle (7) and the bottom of the frame leg (32) is set to h, and the scale size on the traction rope (2) is coded starting from h.

6. The device for measuring the verticality of a pipe pile according to claim 4, characterized in that: Each of the legs (32) is a telescopic rod with adjustable length.

7. The device for measuring the verticality of a pipe pile according to claim 6, characterized in that: The scale on the traction rope (2) is coded starting from 0.

8. The device for measuring the verticality of a pipe pile according to claim 1, characterized in that: The laser assembly (4) comprises a laser (41) and a weighted ball (42) used for automatically adjusting the laser (41) to emit laser light upward in a vertical direction; the laser (41) is spherically hinged with an emission port facing upward to the middle of the top surface of the main frame (1), and the weighted ball (42) is fixedly connected to the lower end of the laser (41).

9. The device for measuring the verticality of a pipe pile according to claim 8, characterized in that: A level sensor (43) is arranged between the laser (41) and the counterweight ball (42) for triggering the laser (41) to emit laser light when in a horizontal state, and the level sensor (43) and the laser (41) are signal-connected.

10. The pipe pile verticality measuring device according to claim 1, characterized in that: A cross line (51) is provided in the middle of the measuring plate (5).

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