A pile foundation diameter verticality measuring instrument

Abstract

The utility model relates to the technical field of building construction discloses a pile foundation diameter perpendicularity measuring instrument, including gallows, set up the fixed frame below gallows and connect in steel wire measuring rope on gallows, the fixed frame bottom fixed connection has cross type mounting bracket, the gallows bottom fixed connection is in the fixed frame center, the fixed frame center with cross type mounting bracket center place is in line and sets up, the cross type mounting bracket's end part is connected with sliding plate respectively, the sliding plate bottom fixed connection has the measuring rod, the measuring rod and sliding plate are in same axis, be provided with the drive assembly of control sliding plate along the length direction of cross type mounting bracket on cross type mounting bracket. The utility model effectively reduces the operation step, improves the detection efficiency, and the detection result is accurate.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a pile foundation diameter verticality measuring instrument. Background Technology

[0002] In the construction process, the foundation often determines the quality of a project. Pile foundations are the most important supporting components in bridge engineering. During the construction of pile foundations, because the stress form of pile foundations is axial compression, there are strict requirements for the verticality of the pile foundation. If the inclination of the pile foundation exceeds the allowable error value, the bearing capacity of the pile will be greatly reduced, thereby affecting the quality of the pile, and even causing rework and increasing construction costs. Therefore, in order to better realize the rapid measurement of the overall verticality of the pile foundation, it is often necessary to use a pile foundation diameter verticality measuring instrument to carry out rapid measurement activities to ensure the firmness of the subsequent pile foundation construction.

[0003] The utility model patent with authorization announcement number CN209131571U discloses a pile foundation verticality testing device, which includes a cross-shaped positioning sleeve, a hanger, four telescopic rods, and a steel wire measuring rope connected to the hanger, realizing multi-angle verticality measurement; the telescopic rods are adjustable in length, so as to determine the change in axis based on the difference between the diameter of the pile foundation and the length of the two-way telescopic rods, and determine the verticality based on the height difference and the change in axis. The testing method is fast and the test results are accurate.

[0004] However, between the first and second measurements, the wire measuring rope of the device needs to be wound up, the length of the telescopic rod adjusted, and then lowered, which is a rather cumbersome operation. Utility Model Content

[0005] The purpose of this invention is to provide a pile foundation diameter verticality measuring instrument that effectively reduces operation steps, improves detection efficiency, and provides accurate detection results.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pile foundation diameter verticality measuring instrument, including a hanger, a fixed frame disposed below the hanger, and a steel wire measuring rope connected to the hanger. A cross-shaped mounting frame is fixedly connected to the bottom of the fixed frame, and the bottom of the hanger is fixedly connected to the center of the fixed frame. The center of the fixed frame and the center of the cross-shaped mounting frame are collinear. Sliding plates are slidably connected to the ends of the cross-shaped mounting frame, and a measuring rod is fixedly connected to the bottom of the sliding plate. The measuring rod and the sliding plate are located on the same axis. A drive assembly is provided on the cross-shaped mounting frame to control the sliding plate to slide along the length direction of the cross-shaped mounting frame.

[0007] By adopting the above technical solution, firstly, the total length of the two measuring rods located on the same straight line at their respective ends is adjusted to the pile diameter using the drive component. The center of the device's hanger and cross-shaped mounting frame is then moved to the center of the pile. The steel wire measuring rope is unwound, and the cross-shaped mounting frame falls freely along the center line of the pile until it can no longer move down, indicating that the pile is tilted. Subsequently, the drive component controls the measuring rods to move towards the center of the cross-shaped mounting frame, shortening the total length of the two measuring rods located on the same straight line at their respective ends. The steel wire measuring rope continues to be unwound, and the cross-shaped mounting frame falls freely along the center line of the pile until it can no longer move down. Relevant data readings are recorded, and the verticality of the pile is calculated.

[0008] A further feature of this invention is that the driving assembly includes a driving rod rotatably connected to the end of the cross-shaped mounting bracket, the driving rod being threaded, the sliding plate being threadedly connected to the driving rod, a first bevel gear being fixedly connected to one end of the driving rod near the center of the cross-shaped mounting bracket, a driving motor being fixedly connected to the top center of the cross-shaped mounting bracket, and a second bevel gear being keyed through the output end of the driving motor through the cross-shaped mounting bracket, the second bevel gear meshing with multiple first bevel gears.

[0009] By adopting the above technical solution, the drive motor controls the rotation of the second bevel gear, thereby controlling the synchronous rotation of multiple first bevel gears, which in turn drives multiple drive rods to rotate synchronously. This causes the sliding plate, which is threadedly connected to the drive rod, to control the measuring rod to move along the length direction of the cross-shaped mounting bracket, thereby adjusting the total length of the two measuring rods located on the same straight line at opposite ends.

[0010] A further feature of this invention is that the end of the cross-shaped mounting bracket has a cavity for embedding a sliding plate, and the sliding plate is slidably connected to the cross-shaped mounting bracket.

[0011] By adopting the above technical solution, the cavity provides a limiting and guiding function for the movement of the sliding plate.

[0012] A further feature of this invention is that the cross-section of the sliding plate is "L" shaped.

[0013] A further feature of this invention is that the hanger is also provided with an auxiliary balancing component, which is located above the fixed frame. The auxiliary balancing component includes a support frame fixedly connected to the hanger. A transmission rod is slidably connected to both sides of the support frame. A guide wheel is provided at the end of the transmission rod away from the support frame. A rack is provided on the inner side of the transmission rod along its length. A gear is rotatably connected to the center of the support frame. The two sides of the gear mesh with the racks on the two transmission rods respectively. A spring is fixedly connected between the transmission rod and the support frame. One end of the spring is fixedly connected to the transmission rod, and the other end is fixedly connected to the support frame.

[0014] By adopting the above technical solution, the auxiliary balancing component effectively ensures that when the wire measuring rope is lowered, the center of the hanger and the cross-shaped mounting frame falls freely along the center line of the pile foundation, avoiding measurement errors caused by external interference. The guide wheels contact the inner wall of the pile foundation to ensure that the cross-shaped mounting frame remains centered during the free fall. When the wire measuring rope tilts, the transmission rod on one side moves to control the gear to rotate, and the spring rebounds, pushing the guide wheel to correct its position. Through the meshing transmission of the gear and rack and the spring feedback, the offset is automatically offset and the verticality is maintained.

[0015] A further feature of this invention is that a horizontal slide rail is provided on the support frame, and the transmission rod is embedded in the slide rail and the transmission rod is slidably connected to the slide rail.

[0016] By adopting the above technical solution, the slide provides a limiting and guiding function for the horizontal movement of the transmission rod.

[0017] A further feature of this invention is that a telescopic rod is fixedly connected to the end of the transmission rod away from the support frame, and a guide wheel is provided at the end of the telescopic rod away from the transmission rod.

[0018] By adopting the above technical solution, the telescopic rod can control the guide wheel to always be in contact with the inner wall of the pile foundation.

[0019] A further feature of this invention is that the telescopic rod includes a fixed rod fixedly connected to the transmission rod, a screw rotatably connected inside the fixed rod, and a movable rod inserted inside the fixed rod. The screw is disposed inside the movable rod and is threadedly connected to the movable rod. A telescopic motor is fixedly connected to the fixed rod, and the output end of the telescopic motor is fixedly connected to the end of the screw via a coupling.

[0020] By adopting the above technical solution, the telescopic motor controls the rotation of the screw, thereby causing the movable rod, which is threadedly connected to the screw, to reciprocate along the length of the screw, thereby adjusting the distance between the guide wheel and the support frame, so that the guide wheel can always be in contact with the inner wall of the pile foundation, thus realizing the auxiliary function.

[0021] A further feature of this invention is that a limiting groove is formed on the movable rod along its axial direction, and a pin is provided on the fixed rod that is embedded in the limiting groove.

[0022] By adopting the above technical solution, when the screw rotates to control the extension and retraction of the movable rod, the pin and the limiting groove can restrict the direction of movement of the movable rod.

[0023] A further feature of this invention is that the wire measuring rope is a wire rope structure, and the wire rope is marked with graduations, with the first end of the wire measuring rope connected to the hanger.

[0024] By adopting the above technical solution, it is convenient to measure the readings on the steel wire measuring rope.

[0025] The beneficial effects of this utility model are:

[0026] 1. The cross-shaped mounting frame structure in this utility model can realize the verticality measurement of pile foundations from multiple angles. The total length of the two measuring rods located on the same straight line and separated by two ends is adjustable. It can determine the change in axis based on the difference between the diameter of the pile foundation and the length of the measuring rod, and determine the verticality based on the height difference and the change in axis, resulting in accurate test results.

[0027] 2. In the first and second measurements, the drive assembly can automatically adjust the total length of the two measuring rods at their ends, eliminating the need to rewind and adjust the length of the steel wire measuring rope before unwinding, thus effectively reducing operation steps and improving detection efficiency.

[0028] 3. This utility model is equipped with an auxiliary balancing component to effectively ensure that when the steel wire measuring rope is controlled to descend, the center of the hanger and the cross-shaped mounting frame fall freely along the center line of the pile foundation, avoiding measurement errors caused by external interference. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0032] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0033] Figure 4 yes Figure 3 Enlarged schematic diagram of the structure at point B.

[0034] Figure 5 yes Figure 3 Enlarged schematic diagram of the structure at point C.

[0035] In the diagram, 1. Hanger; 2. Fixing frame; 3. Steel wire measuring rope; 4. Cross-shaped mounting frame; 5. Sliding plate; 6. Measuring rod; 7. Drive assembly; 71. Drive rod; 72. First bevel gear; 73. Drive motor; 74. Second bevel gear; 75. Cavity; 8. Auxiliary balancing assembly; 81. Support frame; 82. Transmission rod; 83. Guide wheel; 84. Rack; 85. Gear; 86. Spring; 9. Telescopic rod; 91. Fixing rod; 92. Screw; 93. Movable rod; 94. Telescopic motor; 95. Limiting groove; 96. Pin. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] Example: Please refer to Figure 1-5 A pile foundation diameter verticality measuring instrument includes a hanger 1, a fixed frame 2 set below the hanger 1, and a steel wire measuring rope 3 connected to the hanger 1. The steel wire measuring rope 3 is a steel wire rope structure with graduations marked on it. The first end of the steel wire measuring rope 3 is connected to the hanger 1. A cross-shaped mounting frame 4 is fixedly connected to the bottom of the fixed frame 2. The bottom of the hanger 1 is fixedly connected to the center of the fixed frame 2. The center of the fixed frame 2 and the center of the cross-shaped mounting frame 4 are collinear. Sliding plates 5 are slidably connected to the ends of the cross-shaped mounting frame 4. A measuring rod 6 is fixedly connected to the bottom of the sliding plate 5. The measuring rod 6 and the sliding plate 5 are located on the same axis. A drive assembly 7 is provided on the cross-shaped mounting frame 4 to control the sliding plate 5 to slide along the length direction of the cross-shaped mounting frame 4.

[0038] Specifically, firstly, the total length of the two measuring rods 6 located on the same straight line at their respective ends is adjusted to the pile diameter using the drive assembly 7. The center of the device's hanger 1 and cross-shaped mounting frame 4 is moved to the center of the pile. The wire measuring rope 3 is unwound using a winch, and the cross-shaped mounting frame 4 falls freely along the pile centerline until it can no longer move down, indicating that the pile is tilted. At this point, the reading on the wire measuring rope 3 is A. Then, the drive assembly 7 controls the measuring rods 6 to move towards the center of the cross-shaped mounting frame 4, shortening the total length of the two measuring rods 6 located on the same straight line at their respective ends. The wire measuring rope 3 continues to be unwound, and the cross-shaped mounting frame 4 falls freely along the pile centerline until it can no longer move down. At this point, the reading on the wire measuring rope 3 is B. The wire measuring rope 3 is then wound up, and the total length of the two measuring rods 6 located on the same straight line at their respective ends is measured. The shortened length of each measuring rod 6 is calculated as C, and the verticality of the pile is 2C / (BA).

[0039] Furthermore, the drive assembly 7 includes a drive rod 71 rotatably connected to the end of the cross-shaped mounting bracket 4. The drive rod 71 is threaded, and the sliding plate 5 is threadedly connected to the drive rod 71. A first bevel gear 72 is fixedly connected to one end of the drive rod 71 near the center of the cross-shaped mounting bracket 4. A drive motor 73 is fixedly connected to the top center of the cross-shaped mounting bracket 4. The output end of the drive motor 73 passes through the cross-shaped mounting bracket 4 and is keyed to a second bevel gear 74. The second bevel gear 74 meshes with multiple first bevel gears 72. The drive motor 73 controls the second bevel gear 74 to rotate, thereby controlling multiple first bevel gears 72 to rotate synchronously, driving multiple drive rods 71 ​​to rotate synchronously. This causes the sliding plate 5, which is threadedly connected to the drive rod 71, to control the measuring rod 6 to move along the length direction of the cross-shaped mounting bracket 4, thereby adjusting the total length of two measuring rods 6 located on the same straight line at opposite ends.

[0040] Furthermore, the cross-shaped mounting bracket 4 has a cavity 75 at its end for the sliding plate 5 to be inserted. The sliding plate 5 is slidably connected to the cross-shaped mounting bracket 4, and the cavity 75 provides a limiting and guiding function for the movement of the sliding plate 5.

[0041] Furthermore, the cross-section of the sliding plate 5 is "L" shaped.

[0042] Furthermore, an auxiliary balancing assembly 8 is also provided on the hanger 1. The auxiliary balancing assembly 8 is located above the fixed frame 2. The auxiliary balancing assembly 8 includes a support frame 81 fixedly connected to the hanger 1. A transmission rod 82 is slidably connected to both sides of the support frame 81. A guide wheel 83 is provided at the end of the transmission rod 82 away from the support frame 81. A rack 84 is provided on the inner side of the transmission rod 82 along its length. A gear 85 is rotatably connected to the center of the support frame 81. The two sides of the gear 85 mesh with the racks 84 on the two transmission rods 82 respectively. A spring 86 is fixedly connected between the transmission rod 82 and the support frame 81. One end of the spring 86 is connected to the transmission rod. 82 is fixedly connected to the other end and fixedly connected to the support frame 81. The auxiliary balancing component 8 effectively ensures that when the steel wire measuring rope 3 is controlled to descend, the center of the hanger 1 and the cross-shaped mounting frame 4 falls freely along the center line of the pile foundation, avoiding measurement errors caused by external force interference. The guide wheels 83 contact the inner wall of the pile foundation to ensure that the cross-shaped mounting frame 4 remains centered during the free fall. When the steel wire measuring rope 3 tilts, the transmission rod 82 on one side moves to control the gear 85 to rotate, and the rear spring 86 rebounds, pushing the guide wheel 83 to correct its position. Through the meshing transmission of the gear 85 and rack 84 and the feedback of the spring 86, the offset is automatically offset and verticality is maintained.

[0043] Furthermore, a horizontal slide rail is provided on the support frame 81, and the transmission rod 82 is embedded in the slide rail and slidably connected to the slide rail. The slide rail provides a limiting and guiding function for the horizontal movement of the transmission rod 82.

[0044] Furthermore, a telescopic rod 9 is fixedly connected to the end of the transmission rod 82 away from the support frame 81. A guide wheel 83 is provided at the end of the telescopic rod 9 away from the transmission rod 82. The telescopic rod 9 includes a fixed rod 91 fixedly connected to the transmission rod 82, a screw 92 rotatably connected inside the fixed rod 91, and a movable rod 93 inserted inside the fixed rod 91. The screw 92 is located inside the movable rod 93 and is threadedly connected to the movable rod 93. A telescopic motor 94 is fixedly connected to the fixed rod 91. The output end of the telescopic motor 94 is connected via a... The shaft is fixedly connected to the end of the screw 92. A limiting groove 95 is opened on the movable rod 93 along its axial direction. A pin 96 is provided on the fixed rod 91 and embedded in the limiting groove 95. The telescopic motor 94 controls the rotation of the screw 92. The pin 96 and the limiting groove 95 can limit the movement direction of the movable rod 93, so that the movable rod 93, which is threadedly connected to the screw 92, reciprocates along the length of the screw 92, thereby adjusting the distance between the guide wheel 83 and the support frame 81, so that the guide wheel 83 can always be in contact with the inner wall of the pile foundation, thus realizing the auxiliary function.

[0045] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pile foundation diameter verticality measuring instrument, comprising a hanger (1), a fixing frame (2) disposed below the hanger (1), and a steel wire measuring rope (3) connected to the hanger (1), characterized in that: The bottom of the fixed frame (2) is fixedly connected to a cross-shaped mounting frame (4), and the bottom of the hanger (1) is fixedly connected to the center of the fixed frame (2). The center of the fixed frame (2) and the center of the cross-shaped mounting frame (4) are arranged in the same line. The ends of the cross-shaped mounting frame (4) are slidably connected to sliding plates (5). The bottom of the sliding plate (5) is fixedly connected to a measuring rod (6). The measuring rod (6) and the sliding plate (5) are located on the same axis. The cross-shaped mounting frame (4) is provided with a drive assembly (7) for controlling the sliding plate (5) to slide along the length direction of the cross-shaped mounting frame (4).

2. The pile foundation diameter verticality measuring instrument according to claim 1, characterized in that: The drive assembly (7) includes a drive rod (71) rotatably connected to the end of the cross-shaped mounting bracket (4). The drive rod (71) is threaded. The sliding plate (5) is threadedly connected to the drive rod (71). A first bevel gear (72) is fixedly connected to one end of the drive rod (71) near the center of the cross-shaped mounting bracket (4). A drive motor (73) is fixedly connected to the top center of the cross-shaped mounting bracket (4). A second bevel gear (74) is keyed through the cross-shaped mounting bracket (4) at the output end of the drive motor (73). The second bevel gear (74) meshes with multiple first bevel gears (72).

3. The pile foundation diameter verticality measuring instrument according to claim 2, characterized in that: The cross-shaped mounting bracket (4) has a cavity (75) at its end for the sliding plate (5) to be inserted, and the sliding plate (5) is slidably connected to the cross-shaped mounting bracket (4).

4. The pile foundation diameter verticality measuring instrument according to claim 3, characterized in that: The sliding plate (5) has an "L" shaped cross-section.

5. A pile foundation diameter verticality measuring instrument according to claim 1, characterized in that: An auxiliary balancing assembly (8) is also provided on the hanger (1). The auxiliary balancing assembly (8) is located above the fixed frame (2). The auxiliary balancing assembly (8) includes a support frame (81) fixedly connected to the hanger (1). A transmission rod (82) is slidably connected to both sides of the support frame (81). A guide wheel (83) is provided at the end of the transmission rod (82) away from the support frame (81). A rack (84) is provided on the inner side of the transmission rod (82) along its length. A gear (85) is rotatably connected to the center of the support frame (81). The two sides of the gear (85) mesh with the racks (84) on the two transmission rods (82) respectively. A spring (86) is fixedly connected between the transmission rod (82) and the support frame (81). One end of the spring (86) is fixedly connected to the transmission rod (82), and the other end is fixedly connected to the support frame (81).

6. The pile foundation diameter verticality measuring instrument according to claim 5, characterized in that: The support frame (81) has a horizontal slide rail, and the transmission rod (82) is embedded in the slide rail and is slidably connected to the slide rail.

7. A pile foundation diameter verticality measuring instrument according to claim 6, characterized in that: The end of the transmission rod (82) away from the support frame (81) is fixedly connected to a telescopic rod (9), and the end of the telescopic rod (9) away from the transmission rod (82) is provided with a guide wheel (83).

8. A pile foundation diameter verticality measuring instrument according to claim 7, characterized in that: The telescopic rod (9) includes a fixed rod (91) fixedly connected to the transmission rod (82), a screw (92) rotatably connected inside the fixed rod (91), and a movable rod (93) inserted inside the fixed rod (91). The screw (92) is located inside the movable rod (93) and the screw (92) is threadedly connected to the movable rod (93). A telescopic motor (94) is fixedly connected to the fixed rod (91), and the output end of the telescopic motor (94) is fixedly connected to the end of the screw (92) through a coupling.

9. A pile foundation diameter verticality measuring instrument according to claim 8, characterized in that: The movable rod (93) has a limiting groove (95) along its axial direction, and the fixed rod (91) is provided with a pin (96) that is embedded in the limiting groove (95).

10. A pile foundation diameter verticality measuring instrument according to claim 1, characterized in that: The steel wire measuring rope (3) is a steel wire rope structure, and the steel wire rope is marked with a scale. The first end of the steel wire measuring rope (3) is connected to the hanger (1).

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