A pile position center coordinate measuring support

Abstract

This utility model relates to the field of pile foundation construction technology, and in particular to a pile center coordinate measuring bracket, comprising a cross beam, which includes two intersecting horizontal beams, with a limiting slider slidingly fitted on each horizontal beam; an extension rod protruding upwards at the intersection of the two horizontal beams; a dimensional scale groove is engraved on the cross beam from the bottom center of the extension rod to the horizontal beam; a reading reference surface is provided on the inner side of the limiting slider; a horizontal bubble component is provided on the cross beam, and a vertical adjustment leg is connected to the bottom of the limiting slider, which is used to support the upper end of the pile. The pile center coordinate measuring bracket of this application can adapt to piles of different diameters; and by adjusting the height of the vertical adjustment leg, it can meet the purpose of use in different measurement scenarios. Furthermore, by coordinating the vertical adjustment leg and the horizontal bubble component, the horizontal bubble component can be observed simultaneously when adjusting the vertical adjustment leg to adjust the horizontal setting of the cross beam, thereby effectively controlling measurement errors.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation construction technology, and in particular to a pile center coordinate measuring bracket. Background Technology

[0002] In engineering surveying and building construction, accurate measurement of the center coordinates of pile locations is a crucial step in ensuring the quality of pile foundation construction, directly affecting the stability and safety of subsequent structures. Existing pile location measurement tools have the following shortcomings: Significant safety hazards: Traditional surveying requires workers to stand at the center of the pile location holding a GPS or prism. When workers are in complex environments such as high altitudes or deep foundation pits, they are prone to accidents such as falls and being struck by objects. Furthermore, prolonged exposure to severe weather conditions makes it difficult to guarantee the personal safety of surveyors and the accuracy of measurement data.

[0003] To address the aforementioned technical problems, those skilled in the art have developed auxiliary devices, such as the patent (publication number: CN114166093A) which discloses an auxiliary device for measuring pile diameter and pile center coordinates. This device includes a central ring and telescopic arms. Several telescopic arms are evenly distributed around the circumference of the central ring. Each telescopic arm has a telescopic structure in its middle section and is marked with graduations. The outermost end of each telescopic arm has a locking buckle that engages with the outer wall of the pile from the outside. A pile core cross component is positioned at the center of the central ring, with the intersection point of the cross component coinciding with the center of the central ring. This auxiliary device, through the telescopic structure of the arms in conjunction with the central ring structure, can adapt to different pile diameters, enabling rapid positioning and locking, thereby simplifying the measurement steps and preparation work, and improving efficiency and measurement accuracy.

[0004] However, it still has the following shortcomings: Limited height adjustment: When there are differences in the elevation of the top of the pile or when there are obstacles blocking the top of the pile, the fixed length of the pole is difficult to adapt to the above measurement scenarios and cannot flexibly adjust the height of the measuring equipment.

[0005] Leveling difficulties: The surface of the pile head is often uneven, and existing measurement auxiliary devices cannot guarantee the horizontal state of the measurement benchmark, which will further amplify the measurement error. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies, such as limited height adjustment and difficulty in leveling when accurately measuring the center coordinates of pile positions, and to provide a support for measuring the center coordinates of pile positions.

[0007] In a first aspect, the present invention provides a pile center coordinate measuring bracket, including a cross beam, the cross beam including two cross-shaped crossbeams, a limiting slider slidingly fitted on the crossbeams, and a locking element provided between the limiting slider and the crossbeams; An extension rod protrudes upward at the intersection of the two crossbeams. The extension rod is used to install the total station prism, GPS receiver, or RTK receiver. The cross beam has a dimensional scale groove engraved from the center of the bottom of the extension rod to the cross beam, and the inner side of the limiting slider is provided with a reading reference surface adapted to the cross beam scale. The cross beam is equipped with a horizontal bubble component, and the bottom of the limiting slider is connected to a vertical adjusting leg, which is used to support the upper end of the pile.

[0008] The pile center coordinate measuring bracket described in this application is based on a cross beam. An extension rod protrudes upwards at the intersection of the two cross beams. This extension rod is used to mount a total station prism, a GPS receiver (Global Positioning System), or an RTK receiver (Real-time kinematic) for measuring the pile center. A limiting slider slides on the cross beams. By adjusting the position of the limiting slider on the cross beams, the pile center coordinate measuring bracket described in this application can be adapted to piles of different diameters. Because the cross beams have graduated grooves running from the bottom center of the extension rod to the cross beams, and the inner side of the limiting slider has a reading reference surface adapted to the cross beam's graduations, the pile center coordinate value can be adjusted based on the graduation value indicated by the reading reference surface. Therefore, the pile center coordinate measuring bracket described in this application can fulfill the basic measurement functions. Furthermore, the bottom of the limiting slider is connected to a vertical adjustment leg, which is used to support the upper end of the pile. The cross beam is equipped with a horizontal bubble component. During construction, the height of the vertical adjustment leg can be adjusted to meet the purpose of use in different measurement scenarios. Moreover, by coordinating the vertical adjustment leg and the horizontal bubble component, the horizontal bubble component can be observed simultaneously when adjusting the vertical adjustment leg to adjust the horizontal setting of the cross beam, thereby effectively controlling measurement errors.

[0009] Preferably, the extension rod is threadedly connected to the cross beam; the effective length of the extension rod is at least one of 10cm, 25cm, 30cm, 50cm, 70cm or 100cm.

[0010] Preferably, the extension rod comprises rod segments connected by threads in sequence, and the effective lengths of all the rod segments include 5cm, 10cm, 20cm, and 50cm. By vertically stacking and combining rod segments of different effective lengths, extension rods of different effective lengths can be formed, effectively reducing the number of available extension rod specifications.

[0011] Preferably, the limiting slider and the vertical adjusting leg are slidably engaged along the length of the crossbeam, and the limiting slider and the vertical adjusting leg are fixed to each other by a second fastener.

[0012] Preferably, the vertical adjusting leg includes a threaded rod and a nut with threaded engagement. The nut is supported at the upper end of the pile body, the threaded rod is vertically arranged, and the threaded rod abuts against the pile body radially. The lower end face of the nut abuts against the top of the pile body wall vertically.

[0013] Preferably, the lower end face of the nut is provided with a rubber pad.

[0014] Preferably, the horizontal bubble member is disposed at the outer end of the crossbeam.

[0015] Preferably, the limiting slider is provided with a groove adapted to the crossbeam.

[0016] Preferably, the extension rod is connected to the crossbeam via a 5 / 8-inch standard threaded interface.

[0017] Preferably, the extension rod is a carbon fiber rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This application describes a pile center coordinate measuring bracket based on a cross beam. An extension rod is used to mount a total station prism, GPS receiver, or RTK receiver for measuring the pile center. A limiting slider slides on the cross beam, allowing the bracket to be adapted to piles of different diameters by adjusting the position of the limiting slider. The cross beam has a graduated groove running from the bottom center of the extension rod to the cross beam, and the inner side of the limiting slider has a reading reference surface adapted to the cross beam's scale. The pile center coordinate value can be adjusted based on the scale value indicated by the reading reference surface, enabling the pile center coordinate measuring bracket to meet basic measurement functions. Furthermore, a vertical adjustment leg is connected to the bottom of the limiting slider, supporting the upper end of the pile. A horizontal bubble structure is provided on the cross beam. During construction, the height of the vertical adjustment leg is adjusted to meet different measurement scenarios. The vertical adjustment leg and the horizontal bubble structure are used in conjunction; the horizontal bubble structure is observed simultaneously when adjusting the vertical adjustment leg to adjust the horizontal setting of the cross beam, thereby effectively controlling measurement errors. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a pile center coordinate measuring bracket according to this application.

[0020] Figure 2 This is a top view schematic diagram of the structure of a pile center coordinate measuring bracket according to this application.

[0021] Figure 3 This is a schematic front view of the structure of a pile center coordinate measuring bracket according to this application.

[0022] Figure 4 This is a schematic diagram of the threaded connection between adjacent rod segments in this application.

[0023] Figure 5 This is a schematic diagram of the overall cross-sectional structure of the pole segment in this application.

[0024] Figure 6 This is a schematic diagram showing the interaction between the limiting slider and the vertical adjusting leg in this application.

[0025] Figure 7 This is a schematic diagram of the sliding fit between the second slider and the second groove in this application.

[0026] Figure 8 This is a schematic diagram of the fit between the centerline groove and the scale groove in this application.

[0027] Figure 9 This is a schematic diagram of the fit between the limiting slider and the vertical adjusting leg in this application (the threaded rod has discontinuous threads).

[0028] Figure 10 This is a schematic diagram of the vertical reference plane of this application.

[0029] Marked in the image: 1-Cross beam, 11-Horizontal beam, 12-Locking element, 13-Dimensional scale groove, 14-Horizontal bubble component, 15-Reading reference surface; 2-Restricting slider; 21-Locking component; 22-Locking component; 23-Slide groove; 24-Second slider; 25-Centerline groove; 3-Extension bar, 31-Bar segment; 4-Vertical adjusting support leg, 41-Threaded rod, 42-Nut, 43-Second slide groove, 44-First block, 45-Scale groove, 46-Vertical reference plane; 5-Second fastener; 6-Rubber pad; 10-Pile body. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1 like Figure 1-6 As shown in the figure, the pile center coordinate measuring bracket described in this embodiment includes a cross beam 1, a limiting slider 2, an extension rod 3, and a vertical adjusting leg 4.

[0037] In one or more embodiments, the cross beam 1 includes two crossbeams 11 that intersect in a cross shape.

[0038] More preferably, the cross beam 1 is cross-shaped and horizontally positioned. A 10cm long aluminum alloy rod is located at the center point of the cross intersection, with a 5 / 8-inch threaded male connector at the top that connects to the threaded female connector at the bottom of the extension rod 3, ensuring that the axis of the extension rod 3 coincides with the central axis of the cross beam 1. The crossbeam 11 is made of rigid materials such as square steel or aluminum alloy profiles. The four arms of the cross beam 1 extend horizontally, and each arm is marked with a scale from the center point of the cross intersection to the beam end, i.e., the distance from the center point to the edge, used for quickly positioning the limiting slider 2. A level bubble component 14 is fixedly installed at the end of the cross beam 1. The level bubble component 14 is preferably a circular or tubular level bubble, used for real-time monitoring of the support's horizontal status. Simultaneously, the center line of the cross beam 1 end can serve as a reference line. By marking or installing a laser alignment device at the beam end, the cross axis of the protective pile can be derived from the end center line, providing a stable spatial reference for pile position verification and construction layout.

[0039] In one or more embodiments, a limiting slider 2 is slidably fitted on the crossbeam 11, and a locking member 21 is provided between the limiting slider 2 and the crossbeam 11, which can fix the limiting slider 2 and the crossbeam 11 relative to each other.

[0040] More preferably, there are four limiting sliders 2, which are slidably mounted on the four arms of the cross beam 1, i.e. the two cross beams 11 respectively; each limiting slider 2 includes a groove 2322 adapted to the cross beam 11, so that the limiting slider 2 can slide along the cross beam 11, and a locking member 21 is connected to the limiting slider 2.

[0041] The locking member 21 is preferably a fastening bolt, and the limiting slider 2 has a threaded hole. The locking member 21 is threadedly engaged with the threaded hole and extends into the slide groove 2322 through the threaded hole to abut against the crossbeam 11, thereby achieving the purpose of fixing the crossbeam 11 and the limiting slider 2 relatively.

[0042] In one or more embodiments, an extension rod 3 is provided at the intersection of the two crossbeams 11, and the extension rod 3 is used to install the total station prism, GPS receiver or RTK receiver.

[0043] In the above scheme, in a preferred embodiment, the extension rod 3 is a replaceable rigid rod, such as made of high-strength aluminum alloy or carbon fiber, serving as a height adjustment component that is compatible with both GPS / RTK and prisms.

[0044] In one preferred embodiment, the extension rod 3 is threadedly connected to the cross beam 1; the effective length of the extension rod 3 is at least one of 10cm, 25cm, 30cm, 50cm, 70cm, or 100cm, and further, the extension rod 3 has multiple length specifications, namely 10cm, 25cm, 30cm, 50cm, 70cm, and 100cm; the bottom end of the extension rod 3 is provided with a 5 / 8-inch threaded interface, and the top end is provided with a measuring equipment mounting part for detachably mounting a prism, GPS receiver, or RTK receiver, so as to realize quick loading and unloading and height adjustment, and the measuring equipment mounting part is preferably a threaded interface or a snap-fit ​​structure.

[0045] In a further preferred embodiment, the extension rod 3 includes rod segments 31 connected by threads in sequence. The effective lengths of all the rod segments 31 are 5cm, 10cm, 20cm, and 50cm, respectively. By continuously overlapping, extension rods 3 of different effective lengths can be combined, which is convenient and practical.

[0046] In one or more embodiments, the cross beam 1 is engraved with a size scale groove 13 from the bottom center of the extension rod 3 to the cross beam 11, and the inner side of the limiting slider 2 is provided with a reading reference surface 15 adapted to the scale of the cross beam 1.

[0047] In a preferred embodiment, the side of the limiting slider 2 is further provided with a reading reference surface 15 for indicating the position of the limiting slider 2 relative to the size scale groove 13. The reading reference surface 15 is preferably a plane or a conical surface.

[0048] In one or more embodiments, a horizontal bubble member 32 is provided at the bottom of the extension rod 3, and a vertical adjusting leg 4 is connected to the bottom of the limiting slider 2, with the vertical adjusting leg 4 supporting the upper end of the pile body 10.

[0049] In a preferred embodiment, the vertical adjusting leg 4 includes a threaded rod 41 and a nut 42 with threaded engagement. The nut 42 is supported at the upper end of the pile body 10, and the threaded rod 41 is vertically arranged.

[0050] The inner side of the slider has a contact part, and the surface that contacts the pile body is either flat or curved to adapt to different pile body surfaces. The side reading reference surface 15 is a metal pointer that protrudes vertically from the side of the slider. The pointer has a pointed mark at its end. The pointer is vertically aligned with the reference surface of the inner contact part of the slider to accurately align with the scale of the cross beam 1. The vertical adjustment leg 4 is vertically set at the bottom of the limiting slider 2. The height of the limiting slider 2 can be adjusted by the nut 42, such as clockwise rotation to extend and counterclockwise rotation to shorten, to adapt to uneven pile head conditions. The limiting slider 2 can slide along the cross beam 11 until the threaded rod 41 abuts against the inner or outer wall of the pile body. The position is fixed by the locking part 21, and then the cross beam 1 is kept horizontal by the adjusting nut 42 to achieve rigid fixation and horizontal calibration of the cross beam 1 and the pile body.

[0051] More preferably, the lower end face of the nut 42 is provided with a rubber pad 6 for anti-slip purposes.

[0052] Compared with the prior art, the pile center coordinate measuring bracket described in this embodiment has the following advantages: High adaptability: With 6 extension rods of various sizes (e.g., 10-100cm) and a universal interface design, the device height can be flexibly adjusted according to the height of the pile and the measurement environment, such as obstacles. It is compatible with GPS, RTK and prism equipment of different brands, without the need to replace the pile center coordinate measuring bracket.

[0053] High ease of installation: The extension rod 3 is connected to the cross beam 1 via a 5 / 8-inch standard threaded interface, reducing the disassembly and assembly time to within 30 seconds, thus overcoming the limitation of fixed height of traditional pile center coordinate measuring brackets.

[0054] High safety: Compared with the traditional method of setting up square timber or cover plates on top of the steel pipe pile to measure the center position during steel pipe pile construction, this support adopts a rigid integrated structure design, which eliminates the need to temporarily build an unstable auxiliary platform, avoids the risk of falling when personnel step on the square timber or cover plates, and effectively protects the safety of construction personnel.

[0055] Precise positioning: The axis of extension rod 3 coincides with the central axis of cross beam 1, and with the rigid fixation of limiting slider 2, it ensures that the measuring center of the measuring equipment is coaxial with the center of the pile position, reducing errors caused by installation offset.

[0056] Easy leveling: The horizontal bubble on the cross beam 1 can intuitively display the horizontal status of the support. In conjunction with the vertical adjustment leg 4 below the limiting slider 2, the height of each support point can be quickly adjusted when the pile head [top surface of the steel pipe wall] is uneven, ensuring the support is level and further improving measurement accuracy.

[0057] Clear scale reading: The pointer design on the side of the slider can avoid obscuring the scale during sliding. During operation, the line of sight is kept parallel to the scale of the cross beam 1. The pointer and the scale are accurately aligned, which improves the accuracy and efficiency of reading the positioning dimensions.

[0058] Cost-effectiveness: The integrated pile center coordinate measuring bracket is compatible with various pile diameters, equipment types and height requirements, reducing the number of tools to carry and lowering equipment procurement and maintenance costs.

[0059] The following describes a preferred embodiment of the pile center coordinate measuring bracket, which includes: a cross beam 1, an extension rod 3, four limiting sliders 2, and a measuring equipment mounting part. The extension rod 3 is a rigid rod that is compatible with GPS / RTK and prisms, and is available in six lengths: 10cm, 25cm, 30cm, 50cm, 70cm, and 100cm. The bottom end has a 5 / 8-inch external thread interface. The cross beam 1 is horizontally arranged in a cross shape, with a 5 / 8-inch internal thread interface at the center point of the cross intersection, which is adapted to connect with the external thread interface at the bottom of the extension rod 3. The axis of the extension rod 3 coincides with the central axis of the cross beam 1. The cross beam 1 has a dimensional scale groove marked from the center point of the cross intersection to the beam body, and a horizontal bubble is provided at the cross intersection. The four limiting sliders 2 are slidably mounted on the four arms of the cross beam 1, and are equipped with locking devices for fixing the slider positions. Each limiting slider 2 has a vertical adjustment leg 4 at its bottom and a pointer on its side that matches the scale of the cross beam 1. The measuring equipment mounting part is located at the top of the extension rod 3 and is used to mount a prism, GPS, or RTK device. in: The cross beam 1 is made of 40×40mm aluminum alloy square tubing welded into a cross shape. A 10cm long aluminum alloy rod is welded to the center of the cross intersection. The top of the rod has a 5 / 8-inch threaded male end with a height of 30mm, which connects to the threaded female end of the extension rod 3, ensuring that the coaxiality error is ≤0.5mm. The single-side arm length of the cross beam 11 can be 510mm. The limiting slider 2 is made of aluminum alloy body, the inner size of the slide groove 23 is 42×42mm and it is compatible with aluminum alloy square tube. A locking part 21 is provided on the side, and the locking part 21 is preferably a bolt. Extension rod 3 uses a 30mm diameter carbon fiber rod and is available in six lengths: 10cm, 25cm, 30cm, 50cm, 70cm, and 100cm. The bottom end has a 5 / 8-inch external thread with a length of 20mm, and the top end has an M20 threaded interface for mounting measuring equipment, which can be connected to a total station prism, GPS, or RTK receiver.

[0060] Locking component 21: preferably a locking bolt, with a rubber pad at the end near the cross beam 1 to prevent wear.

[0061] Center line: The crossbeam 11 of the cross beam 1 has millimeter-level graduations along its length, which can be used to easily draw the center point cross line and add protective piles on the outside of the pile body.

[0062] Furthermore, the crossbeam 11 is provided with several through holes along its length to serve as the center point for the protective piles added to the outside of the pile body. When in use, a rod is inserted into the corresponding through hole, and the position pointed to by the lower end of the rod is the center of the protective pile.

[0063] Vertical adjustment support leg 4: A threaded rod 41 with a length of 100mm is vertically welded to the bottom of the limiting slider 2. The threaded section is 100mm long and the adjustment range is 0-100mm. It is equipped with a nut 42, which can be stopped by turning it on the threaded section. The bottom end of the nut 42 is equipped with a rubber pad 6 with a diameter of 20mm.

[0064] Tubular horizontal bubble: Tubular horizontal bubbles 7 are fixed at the four ends of the cross beam 1, with an accuracy of 0.5mm / m.

[0065] The measuring equipment mounting part has a threaded interface or a snap-fit ​​structure.

[0066] The cross beam 11 is made of aluminum alloy square tube or stainless steel square tube, with four arms of the same length, and the horizontal bubble is a tubular level or a circular level.

[0067] The extension rod 33 is made of aluminum alloy or carbon fiber.

[0068] Pile 10: This refers to the steel pipe or precast pile to be tested.

[0069] like Figure 9 and 10 As shown, more preferably, the reading reference surface 15 is the inner side of the limiting slider 2. Since the threaded rod 41 abuts against the pile body 10 radially, for ease of use, a vertical reference plane 46 is longitudinally provided on the threaded rod 41. The vertical reference plane 46 and the reading reference surface 15 are in the same vertical plane. When in use, the vertical reference plane 46 abuts against the pile body 10 radially, so that the scale position pointed to by the reading reference surface 15 on the size scale groove 13 expresses the radius of the pile body 10.

[0070] The usage procedure of the pile center coordinate measuring bracket described in this embodiment is as follows: Based on the diameter of the pile 10 and the required measurement height, select the extension rod 3 of the corresponding length. For example, if the distance from the top of the pile to the measurement point is 50cm, select the 50cm extension rod 3.

[0071] Tighten the bottom end of extension rod 3 to the 5 / 8 threaded interface at the center of cross beam 1 to ensure that extension rod 3 is vertical. Install the required measuring equipment, such as prism, GPS or RTK, at the top of extension rod 3.

[0072] Based on the diameter of the pile body 10 to be tested, calculate the required position of the limiting slider 2. For example, if the pile diameter is 1000mm, the slider needs to slide 500mm outward from the center point.

[0073] Slide the four limiting sliders 2 along the crossbeam 11 of the cross beam 1, read the 500mm scale line on the cross beam 1 based on the reading reference plane 15, and temporarily fix the locking bolt.

[0074] Place the bracket on the top of the pile or at the pile opening, finely adjust the position of the limiting slider 2 so that the four limiting sliders 2 abut against the inner or outer wall of the pile, and initially tighten the locking bolts.

[0075] Observe the tubular horizontal bubble on the cross beam 1. If the bubble deviates, adjust the height by rotating the nut 42 of the vertical adjustment leg 4 at the bottom of the corresponding limiting slider 2. If the bubble deviates to one side, raise the leg on that side until the bubble is centered. At this time, the pile center coordinate measuring bracket remains horizontal.

[0076] Tighten all locking bolts on the limiting slider 2 again to ensure the pile center coordinate measuring bracket is securely fixed; The coordinates of the top of extension rod 3 are the coordinates of the pile center.

[0077] The support for measuring the center coordinates of pile locations described in this embodiment is suitable for the accurate measurement and positioning of the center coordinates of various pile foundations (such as concrete piles, steel pipe piles, etc.) during the construction process. It is particularly suitable for scenarios where the pile head surface is uneven and the measurement height needs to be adjusted.

[0078] The support for measuring the center coordinates of pile locations described in this embodiment also has the following effects: 1. It can adapt the support to piles of different diameters, improving its versatility; 2. The interchangeable extension rod 3 design meets the measurement needs of different heights; 3. Compatible with various measuring devices such as GPS / RTK and prisms, improving equipment adaptability; 4. The measurement accuracy is improved through the precise positioning design of the stable vertical adjustment leg 4, locking part 21, limiting slider 2 and crossbeam 11; 5. The vertical adjusting leg 4 also serves as a leveling component to adapt to complex working conditions where the pile head is uneven; 6. Optimize the scale reading structure and ensure accurate size positioning through side reading design; 7. Simplify the installation and adjustment process to improve construction efficiency.

[0079] This utility model discloses a pile center coordinate measuring bracket, belonging to the field of engineering surveying technology, aiming to solve the problems of poor compatibility, limited height adjustment, insufficient positioning accuracy, and cumbersome operation of existing measuring tools. The bracket includes extension rods 3 of various specifications, a cross beam 1, a limiting slider 2, and a measuring equipment mounting section. The extension rods 3 are connected to the center of the cross beam 1 via a 5 / 8-inch standard threaded interface, providing six height adjustments from 10 to 100 cm. The cross beam 1 is equipped with a horizontal bubble and a dimension scale groove, and together with the limiting slider 2 with a side pointer and vertical adjustment legs 4, it enables rapid positioning and leveling of piles of different diameters. The top mounting section is compatible with GPS / RTK, prisms, and other equipment. This utility model improves versatility and safety through modular design, shortens installation time to within 30 seconds, and achieves millimeter-level measurement accuracy, making it suitable for various pile foundation construction scenarios.

[0080] Example 2 like Figure 7 and 8 As shown, the pile center coordinate measuring bracket described in this application differs from Embodiment 1 in that the limiting slider 2 and the vertical adjusting leg 4 can slide along the length of the crossbeam 11, and the limiting slider 2 and the vertical adjusting leg 4 are fixed to each other by a second fastener 5.

[0081] More specifically and preferably, the bottom of the limiting slider 2 is provided with a second slider 24, the top of the threaded rod 41 is connected to a first block 44, and the first block 44 is provided with a second sliding groove 43 along the length direction of the crossbeam 11. The second sliding groove 43 slides in cooperation with the second slider 24 to achieve the desired effect.

[0082] The second slider 24 has a centerline groove 25 on its side, and the corresponding side of the first block 44 has a scale groove 45. The centerline groove 25 points to the scale groove 45. The scale groove 45 in the middle is the reference groove. Under normal circumstances, the reference groove and the centerline groove 25 are vertically aligned. However, during construction, sometimes the side wall of the pile body 10 will undergo slight deformation, resulting in a roundness error of the pile body 10. Since the threaded rod 41 abuts against the pile body 10 radially, the roundness error will affect the positional accuracy of the total station prism, GPS receiver, or RTK receiver. Therefore, by restricting the sliding fit between the slider 2 and the vertical adjustment leg 4 along the length of the crossbeam 11, the purpose of fine adjustment and elimination of the above-mentioned roundness error can be achieved.

[0083] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pile center coordinate measuring bracket, comprising a cross beam (1), wherein the cross beam (1) comprises two cross-shaped crossbeams (11), a limiting slider (2) is slidably fitted on the crossbeams (11), and a locking element (21) is provided between the limiting slider (2) and the crossbeams (11); characterized in that, An extension rod (3) is provided at the intersection of the two crossbeams (11); a size scale groove (13) is engraved on the crossbeam (1) from the bottom center of the extension rod (3) to the crossbeam (11); a reading reference surface (15) adapted to the scale of the crossbeam (1) is provided on the inner side of the limiting slider (2); a horizontal bubble component (14) is provided on the crossbeam (1); a vertical adjustment leg (4) is connected to the bottom of the limiting slider (2); the vertical adjustment leg (4) is used to support the upper end of the pile body (10).

2. The pile center coordinate measuring bracket according to claim 1, characterized in that, The extension rod (3) is threadedly connected to the cross beam (1); the effective length of the extension rod (3) is at least one of 10cm, 25cm, 30cm, 50cm, 70cm or 100cm.

3. The pile center coordinate measuring bracket according to claim 2, characterized in that, The extension rod (3) includes rod segments (31) connected by threads in sequence, and the effective lengths of all rod segments (31) include 5cm, 10cm, 20cm and 50cm.

4. The pile center coordinate measuring bracket according to claim 1, characterized in that, The limiting slider (2) and the vertical adjusting leg (4) can slide together along the length of the crossbeam (11), and the limiting slider (2) and the vertical adjusting leg (4) are fixed to each other by a second fastener (5).

5. A pile center coordinate measuring bracket according to any one of claims 1-4, characterized in that, The vertical adjusting leg (4) includes a threaded rod (41) and a nut (42) with threaded engagement. The nut (42) is supported on the upper end of the pile body (10). The threaded rod (41) is vertically arranged and abuts against the pile body (10) radially along the pile body (10). The lower end face of the nut (42) abuts against the top of the pipe wall of the pile body (10) vertically.

6. The pile center coordinate measuring bracket according to claim 5, characterized in that, The lower end face of the nut (42) is provided with a rubber pad (6).

7. A pile center coordinate measuring bracket according to any one of claims 1-4, characterized in that, The horizontal bubble component (14) is located at the outer end of the crossbeam (11).

8. A pile center coordinate measuring bracket according to any one of claims 1-4, characterized in that, The limiting slider (2) is provided with a groove (23) that is adapted to the crossbeam (11).

9. A pile center coordinate measuring bracket according to any one of claims 1-4, characterized in that, The extension rod (3) is connected to the cross beam (1) via a 5 / 8-inch standard threaded interface.

10. A pile center coordinate measuring bracket according to any one of claims 1-4, characterized in that, The extension rod (3) is a carbon fiber rod.

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