Pre-embedded sleeve positioning device for tied arch

Abstract

The utility model relates to the technical field of tie bar arch embedded sleeve positioning, in particular to a tie bar arch embedded sleeve positioning device which comprises a sleeve, and a positioning rod is coaxially arranged in the sleeve. The positioning device for the embedded sleeve of the tied arch further comprises a frame. A checking platform is mounted on the frame; an angle checker matched with the positioning rod is arranged on the checking platform; and the checking platform is also provided with at least two gradienters. Compared with the prior art, the positioning process is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of positioning technology for pre-embedded sleeves of tie rod arches, and in particular to a positioning device for pre-embedded sleeves of tie rod arches. Background Technology

[0002] A tied arch is a type of arch structure. It mainly consists of arch ribs, tie rods, and hangers. The arch ribs are the main load-bearing components, bearing the axial pressure within the arch plane and transferring the superstructure load to the foundation. The tie rods balance the horizontal thrust of the arch ribs, effectively offsetting the horizontal thrust at the arch foot under vertical loads, thus reducing the horizontal force on the foundation. The hangers primarily transfer the loads from the bridge deck and other superstructures to the arch ribs.

[0003] In the construction of the Nelson system tied-arch cable-stayed bridge, the large weight of the embedded sleeves and the fact that the inner formwork of the bridge, which directly contacts the sleeves, is made of bamboo plywood made it impossible to precisely control the height and angle. This resulted in the inability to accurately and quickly adjust the position and angle of the embedded sleeves during installation, causing misalignment between the center of the embedded sleeve and the center of the arch hanger. Conventional measurement methods have the following drawbacks:

[0004] 1. Before measurement, the elevation of the center point of the pre-embedded sleeve of the hanger rod needs to be collected from the inner formwork of the bridge. The spatial coordinates of the center position of the top of the pre-embedded sleeve of the hanger rod are calculated based on its elevation and tilt angle.

[0005] 2. During measurement, the bottom center point of the embedded sleeve needs to be measured and laid out on the inner mold, and the bottom of the sleeve needs to be fixed. The top coordinates of the sleeve should be repeatedly adjusted to the correct position based on the pre-calculated coordinates of the sleeve. Since the inner mold of the bridge is made of wood, the elevation of its layout point often does not match the design value, and the embedded sleeve has an inclination angle in both the longitudinal and transverse directions of the bridge. At this time, it is necessary to recalculate the spatial coordinates of the top center point of the sleeve based on the actual elevation.

[0006] 3. The embedded sleeve is heavy and extremely difficult to fix during installation and positioning. After measurement and adjustment, it is very easy to cause displacement during fixing, resulting in deviation of the center position.

[0007] To ensure measurement accuracy and improve installation and positioning efficiency, an installation device was designed that can be placed on the top surface of the inner mold, saving time and improving work efficiency in coordinate calculation and installation positioning. Utility Model Content

[0008] To address the problems of cumbersome and inefficient operation of current sleeve positioning, this utility model provides a positioning device for pre-embedded sleeves in tie rod arches.

[0009] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0010] A positioning device for a pre-embedded sleeve of a tied arch includes a sleeve with a positioning rod coaxially arranged inside the sleeve. The device also includes a frame; a verification platform is mounted on the frame; an angle checker is installed on the verification platform in conjunction with the positioning rod; and at least two levels are also installed on the verification platform. In use, the positioning rod is coaxially fixed inside the sleeve, the frame is then fixed, the lower end of the positioning rod is fixed, the level is adjusted using the levels, the upper part of the positioning rod is checked and positioned using the angle checker, and finally the sleeve is welded and fixed to the inner formwork of the bridge. This shortens the positioning process and improves work efficiency.

[0011] Preferably, the angle checker includes an L-shaped rod; the L-shaped rod is set on the check platform; check components are set on both sides of the L-shaped rod. The L-shaped rod ensures that the included angle between the two check components is 90 degrees, which can fix the included angle between the upper part of the positioning rod and the check platform in the front-back and left-right directions on the plane of the check platform.

[0012] Preferably, the verification component includes a flat plate; one side of the flat plate is hinged to an L-shaped rod; an extension rod is fixedly installed at the opposite corner of the flat plate away from the L-shaped rod; the extension rod is positioned above the included angle of the L-shaped rod. In use, the upper part of the positioning rod is placed against the included angle of the L-shaped rod, at which point the intersection of the extension rods of the two verification components is against the upper part of the positioning rod, and then the sleeve is fixed.

[0013] Preferably, a plurality of hinge pins are fixedly provided on the side of the plate that is hinged to the L-shaped rod; hinge pin springs are provided on the hinge pins. The hinge pin springs can fix the position of the plate when it is not subjected to external force, and keep the plate perpendicular to the plane where the L-shaped rod is located.

[0014] Preferably, the verification platform is a rectangular frame; a level is installed on the longer side of the verification platform; a level is installed on the shorter side of the verification platform; the verification platform is slidably mounted on the frame in the vertical direction; the end of the L-shaped rod is fixedly mounted on the inner wall of the verification platform. This allows the verification platform to be leveled using two levels.

[0015] Preferably, the verification platform has through holes at its corners; a threaded screw is threaded onto the sidewall of the through hole. The verification platform can slide on the frame and be fixed by the screw.

[0016] Preferably, adjustable footrests are provided at the corners of the bottom surface of the frame.

[0017] Preferably, positioning pins are provided at the corners of the frame to facilitate frame positioning.

[0018] Preferably, anchor blocks are fixedly installed at both ends of the sleeve; a through hole is provided in the middle of the anchor block; and a positioning rod is disposed in the through hole. This facilitates the fixing of the sleeve using the positioning rod.

[0019] As can be seen from the above technical solution, the advantages of this utility model include: when in use, the positioning rod is coaxially fixed inside the sleeve, then the frame is fixed, the lower end of the positioning rod is fixed, the level of the calibration platform is adjusted using a level, then the upper part of the positioning rod is checked and positioned by an angle checker, and finally the sleeve is welded and fixed to the inner formwork of the bridge, which shortens the positioning process and improves work efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an exploded structural diagram of the sleeve, anchor block, and positioning rod of this utility model.

[0023] Figure 3 This is an exploded view of the positioning pin of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the verification platform of this utility model.

[0025] Figure 5 This is a schematic diagram of the angle checker of this utility model.

[0026] Explanation of main figure symbols

[0027] 1-Sleeve, 2-Positioning rod, 3-Frame, 4-Checking platform, 5-Angle checker, 6-Level, 7-Foot support, 8-Positioning pin, 9-Anchor block;

[0028] 401-Through hole, 402-Screw; 501-L-shaped rod, 502-Plate, 503-Extension rod, 504-Hinge spring; 801-Sleeve, 802-Spring, 803-Needle rod. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] like Figure 1-2 As shown, a positioning device for a pre-embedded sleeve of a tie rod arch includes a sleeve 1, with a positioning rod 2 coaxially arranged inside the sleeve 1; anchor blocks 9 are fixedly installed at both ends of the sleeve 1; a through hole is provided in the middle of the anchor block 9; the positioning rod 2 is disposed in the through hole. The anchor block 9 has external threads, the sleeve 1 has internal threads, and the anchor block 9 is threaded inside the sleeve 1. The positioning rod 2 is disposed in the through hole, and two nuts are threaded on the positioning rod 2, which is fixed to the anchor block 9 by the nuts. This facilitates the fixing of the sleeve 1 using the positioning rod 2.

[0031] In other alternative embodiments, the through hole and the positioning rod 2 are interference fit.

[0032] The pre-embedded sleeve positioning device for the tie-rod arch also includes a frame 3; the frame 3 is generally a cuboid frame, including a bottom rectangular frame and a top rectangular frame, which are connected by uprights, which are located at the corners of the bottom and top rectangular frames; a verification platform 4 is installed on the frame 3; the verification platform 4 is generally a rectangular frame; a level 6 is installed on the longer side of the verification platform 4; a level 6 is installed on the shorter side of the verification platform 4, which can be used to level the verification platform 4. The verification platform 4 is slidably mounted on the frame 3 in the vertical direction; a through hole 401 is provided at the corner of the verification platform 4; a screw 402 is threaded on the side wall of the through hole 401. The upright is located in the through hole 401 and can be fixed to the upright by the screw 402 abutting against the upright.

[0033] In the above configuration, a height-adjustable footrest 7 is provided at the bottom corner of the frame 3. A screw is fixed to the footrest 7, and a threaded hole is provided on the bottom surface of the frame 3. The footrest 7 is threaded onto the bottom surface of the frame 3 using the screw. The frame 3 can be finely adjusted in height using the footrest 7. Positioning pins 8 are provided at the corners of the frame 3, such as... Figure 3 As shown, the positioning needle 8 includes a sleeve 801, one end of a spring 802 is fixed inside the sleeve 801, and the other end of the spring 802 is fixed to the annular platform on the outer wall of the needle bar 803. Both the sleeve 801 and the needle bar 803 are provided with radial through holes, and a pin is inserted through the radial through holes. When the needle bar 803 is pushed down and inserted into the ground or template, the pin is used to fix the needle bar 803 inside the sleeve 801.

[0034] Among them, such as Figure 4As shown, an angle checker 5 is installed on the verification platform 4 in conjunction with the positioning rod 2. The angle checker 5 includes an L-shaped rod 501. The L-shaped rod 501 is installed on the verification platform 4, and its end is fixedly installed on the inner wall of the verification platform 4. Verification components are installed on both sides of the L-shaped rod 501. The L-shaped rod 501 ensures that the included angle between the two verification components is 90 degrees, which can fix the included angle between the upper part of the positioning rod 2 and the verification platform 4 in the front-back and left-right directions on the plane where the verification platform 4 is located. The verification component includes a plate 502. One side of the plate 502 is hinged to the L-shaped rod 501. An extension rod 503 is fixedly installed at the other corner of the plate 502 away from the L-shaped rod 501. The extension rod 503 is located above the included angle of the L-shaped rod 501. In use, the upper part of the positioning rod 2 is attached to the angle of the L-shaped rod 501. At this time, the intersection of the extension rods 503 of the two verification components is attached to the upper part of the positioning rod 2, and then the sleeve 1 is fixed.

[0035] like Figure 5 As shown, several hinge pins are fixedly installed on the side of the plate 502 that is hinged to the L-shaped rod 501; hinge pin springs 504 are installed on the hinge pins. The hinge pin springs 504 can fix the position of the plate 502 when it is not subjected to external force, and make the plate 502 perpendicular to the plane where the L-shaped rod 501 is located.

[0036] In use, the positioning rod 2 is coaxially fixed inside the sleeve 1. The coordinates of the center of the bottom of the pre-embedded sleeve 1 and the coordinates of the positioning pin 8 are calculated in advance. The frame 3 is fixed, and the verification platform 4 is fixed to the frame 3 using the screw 402. The level of the verification platform 4 is adjusted using the level 6, and the upper part of the positioning rod 2 is placed against the angle of the L-shaped rod 501. At this time, the intersection of the extension rods 503 of the two verification components is against the upper part of the positioning rod 2. The angle between the two flat plates 502 and the plane of the L-shaped rod 501 is checked using an angle gauge. The height of the verification platform 4 can be adjusted by using the foot support 7 and the screw 402 to adjust the angle between the two flat plates 502 and the plane of the L-shaped rod 501. Then, the sleeve 1 is fixed to the reinforcing cage, and then the concrete is poured for fixation. This shortens the positioning process and improves work efficiency.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning device for a pre-embedded sleeve of a tie rod arch, comprising a sleeve (1), characterized in that, A positioning rod (2) is coaxially arranged inside the sleeve (1); the positioning device for the pre-embedded sleeve of the tie rod arch also includes a frame (3); a verification platform (4) is installed on the frame (3); an angle checker (5) is set on the verification platform (4) in conjunction with the positioning rod (2); at least two levels (6) are also set on the verification platform (4).

2. The tie rod arch pre-embedded sleeve positioning device according to claim 1, characterized in that, The angle checker (5) includes an L-shaped rod (501); the L-shaped rod (501) is set on the check platform (4); check components are set on both sides of the L-shaped rod (501).

3. The tie rod arch pre-embedded sleeve positioning device according to claim 2, characterized in that, The verification component includes a plate (502); one side of the plate (502) is hinged to an L-shaped rod (501); an extension rod (503) is fixedly installed at the other corner of the plate (502) away from the L-shaped rod (501); the extension rod (503) is located above the angle between the L-shaped rod (501).

4. The tie rod arch pre-embedded sleeve positioning device according to claim 3, characterized in that, Several hinge pins are fixedly installed on the side of the plate (502) that is hinged to the L-shaped rod (501); hinge pin springs (504) are installed on the hinge pins.

5. The tie rod arch pre-embedded sleeve positioning device according to claim 4, characterized in that, The verification platform (4) is set in a rectangular frame; a level (6) is installed on the longer side of the verification platform (4); a level (6) is installed on the shorter side of the verification platform (4); the verification platform (4) is slidably set on the frame (3) in the vertical direction; the end of the L-shaped rod (501) is fixedly set on the inner wall of the verification platform (4).

6. The tie rod arch pre-embedded sleeve positioning device according to claim 5, characterized in that, The verification platform (4) has a through hole (401) at the corner; a screw (402) is threaded on the side wall of the through hole (401).

7. The tie rod arch pre-embedded sleeve positioning device according to claim 1, characterized in that, The bottom corner of the frame (3) is equipped with adjustable footrests (7).

8. The positioning device for the pre-embedded sleeve of the tie rod arch according to claim 1, characterized in that, Positioning pins (8) are provided at the corners of the frame (3).

9. The tie rod arch pre-embedded sleeve positioning device according to claim 1, characterized in that, Anchor blocks (9) are fixedly installed at both ends of the sleeve (1); a through hole is provided in the middle of the anchor block (9); the positioning rod (2) is set in the through hole.

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