Precise positioning device for hanging seat buried cone for bridge tower construction

Abstract

The utility model is applicable to the field, and provides a hanging seat buried cone accurate positioning device for bridge tower construction, which comprises a positioning plate, at least two buried cone holes are arranged on the positioning plate, the positioning plate is fixed on an outer template through countersunk bolts, a plurality of positioning nuts are fixed on the periphery of each buried cone hole, and an annular plate is arranged on the periphery of each buried cone hole. A plurality of positioning bolts penetrate into the annular plate, the positioning bolts are locked to the positioning nuts in a one-to-one correspondence mode, stress bolts further penetrate into the annular plate, and the stress bolts are used for screwing embedded cones. According to the utility model, when the four buried cones of each bridge tower hanging seat are buried, the positioning plates are connected with the outer template through the bolts, and the positioning plates and the annular plates are additionally arranged to form dual positioning, so that the buried cones can be accurately positioned on the basis of not influencing the working performance of the buried cone component; and particularly, the effect of ensuring the relative positioning precision of the adjacent buried cones in the buried cone group is obvious.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge construction technical field especially relates to a hanging seat burying cone accurate positioning device for bridge tower construction. BACKGROUND

[0002] At present, the tower column of concrete bridge tower and climbing formwork are connected through burying cone assembly as connecting device, and the installation structure basically is that the force screw rod of burying cone assembly is fixedly connected with the tower column reinforcing bar through welding or is that the formwork panel is positioned through opening.

[0003] The traditional method has the following problems: first, the pre-burying precision of burying cone assembly is not high, and the burying cone is easily affected by formwork installation and concrete pouring, causing burying cone deformation, damage, deviation and the like; second, the formwork panel has many openings, which is not conducive to formwork turnover, and too many openings will affect the concrete appearance quality and waste materials if not properly handled; third, the tower column reinforcing bar is easily damaged, causing safety hazards to the overall strength of the structure. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model aims at providing a hanging seat burying cone accurate positioning device for bridge tower construction, which aims at solving the above technical problems.

[0005] The utility model adopts the following technical scheme:

[0006] The hanging seat burying cone accurate positioning device for bridge tower construction comprises a positioning plate, at least two burying cone holes are formed in the positioning plate, the positioning plate is fixed to the outer formwork through a countersunk head bolt, a plurality of positioning nuts are fixed outside each burying cone hole, and a circular ring plate is arranged, a plurality of positioning bolts are penetrated into the circular ring plate, the positioning bolts are one-to-one locked to the positioning nuts, a force screw is further penetrated into the circular ring plate, and the force screw is used for screwing into the burying cone.

[0007] Further, the bottom surface of the circular ring plate is coaxially fixed with a flange nut, and a reinforcing plate is further welded between the flange disc of the flange nut and the circular ring plate.

[0008] Further, the burying cone hole has two.

[0009] The utility model discloses beneficial effect is: first, the device is prefabricated in the factory, compared with the existing welding mode, can reduce the on -the -spot welding work, effectively guarantee the processing quality, second, through this device can be on the basis of not influencing the performance of the cone embedment component to the cone embedment double accurate positioning, make the cone embedment more accurate, provide the safe support for bridge tower construction, third, this device only needs once installation, and the construction is convenient, saves manpower and material resources, with the tower column construction, the positioning plate is fixed on the outer formwork and is lifted to the cone embedment design position with the bridge tower segmentation, reduces the repeated trepanning of formwork and the turnover frequency, guarantees the safety performance of formwork. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure diagram of hanging seat cone embedment accurate positioning device;

[0011] Figure 2 It is the installation schematic drawing of hanging seat cone embedment accurate positioning device;

[0012] Figure 3 It is the structure diagram of positioning plate;

[0013] Figure 4 It is the structure diagram of circular ring plate;

[0014] Figure 5 It is the position relation diagram of circular ring plate and flange nut. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is in conjunction with the drawings and example, and the utility model is further detailedly explained.It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0016] In order to explain the technical scheme of the utility model, the following is explained through specific example.

[0017] As Figures 1-3 The utility model discloses beneficial effect is: first, the device is prefabricated in the factory, compared with the existing welding mode, can reduce the on -the -spot welding work, effectively guarantee the processing quality, second, through this device can be on the basis of not influencing the performance of the cone embedment component to the cone embedment double accurate positioning, make the cone embedment more accurate, provide the safe support for bridge tower construction, third, this device only needs once installation, and the construction is convenient, saves manpower and material resources, with the tower column construction, the positioning plate is fixed on the outer formwork and is lifted to the cone embedment design position with the bridge tower segmentation, reduces the repeated trepanning of formwork and the turnover frequency, guarantees the safety performance of formwork. Figure 2 It is one cone, and actual can carry out two cone's simultaneous positioning. In order to show clearly, the annular plate, positioning bolt and force screw bolt corresponding to the lower cone hole are all shown.

[0018] The use mode of the device is as follows:

[0019] (1) First, the bridge tower reinforcement is bound, and after completion, the bridge tower outer formwork is closed. According to the design of the drawing, the hole is opened on the outer formwork at the position of the cone, which only needs to be opened once. Subsequently, with the automatic jacking of each segment of the bridge tower to the next cone installation position. Four cones are installed at each bridge tower hanging seat installation position, and each two cones are fixed by a positioning plate. Specifically, there are three round holes around each cone hole, and the countersunk bolts are screwed into the outer formwork through the round holes. Three positioning nuts are welded around each cone hole on the positioning plate, and the three positioning bolts are inserted into the three bolt holes on the annular plate and screwed into the positioning nuts one by one to complete the positioning and fixation of the annular plate. Then, the force screw is inserted into the center position of the annular plate, and the force screw is screwed into the cone. In this way, the double positioning of the positioning plate and the annular plate is formed, and the positioning of the cone is more accurate, especially the relative positioning accuracy of the two cones on a positioning plate or the four cones on a hanging seat is guaranteed.

[0020] (2) Butter is applied to the outer surface of the cone, and geotextile or cotton is stuffed into the hole on the outer surface of the cone to prevent the cement slurry from entering and blocking the screw hole during concrete pouring.

[0021] (3) After the concrete pouring is completed and reaches a certain strength, the force screw is loosened and removed, the cone is left in the concrete, and the positioning device is jacked up to the next pre-buried position along with the bridge tower outer formwork. The next cone and force screw can be installed to achieve accurate positioning by repeating the above process.

[0022] (4) The normal process of accurate positioning and installation of the cone is carried out. After the construction is completed, the force screw is removed, the bridge tower hanging seat is taken out, the cone is unscrewed, and the same grade concrete is used to repair the cone hole.

[0023] In addition, as a preferred structure, in combination with Figure 4 As shown in the figure, the bottom surface of the annular plate 5 is also coaxially fixed with a flange nut 8, and a reinforcing plate is welded between the flange of the flange nut 8 and the annular plate 5. In this structure, the flange nut 8 is connected between the cone 6 and the nut of the force screw 7, and the structure strength is strengthened through the reinforcing plate, the structure displacement error is reduced, and the opening at the connection between the cone and the outer formwork is blocked to prevent the slurry from leaking and blocking the screw hole during concrete pouring, which has obvious effect.

[0024] In the structure of the device, the countersunk bolt 2 is connected with the bridge tower concrete pouring outer formwork 9 through the positioning plate 5, and it needs to be noted that the nut side of the positioning plate is placed on the outer side of the outer formwork during installation. The positioning bolt passes through the annular plate and is then tightly screwed into the positioning nut on the positioning plate. The force screw 7 is connected with the cone 6 through the cone hole 11, and the flange nut and the reinforcing plate are arranged between the cone 6 and the force screw 7. The entire positioning device is assembled.

[0025] After the precise positioning of the embedded cone, the bridge tower hanging seat is connected, the bridge tower support system is placed on the hanging seat, the outer frame of the bridge tower and the cloth machine are fixed on the support system through the support seat, and all the vertical forces such as construction loads and self-weight of the structure are concentrated on the force screw bolts and then transmitted to the embedded cone, the force is transmitted to the tower column concrete through the embedded cone, the stable support of the bridge tower is ensured, and the construction environment is safe and stable.

[0026] After the above process is completed, the force screw bolt is screwed out, the outer formwork is withdrawn, the embedded cone is screwed out in the reverse direction, and the embedded cone hole is repaired by filling the concrete with the same mark. The device improves the precise positioning of the embedded cone of the hanging seat as a whole, the positioning plate and the annular plate form double positioning, the error range is reduced, accurate measurement and positioning are provided for the segmented jacking construction of the bridge tower, the jacking construction of the bridge tower according to the predetermined track is ensured, safety is ensured. Moreover, the positioning plate is jacked upward together with the formwork, repeated hole opening on the formwork is not needed, the integrity of the formwork is well preserved, the construction efficiency is improved, and the labor intensity is reduced.

[0027] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A precise positioning device for a bracket embedded cone used in bridge tower construction, characterized in that, The device includes a positioning plate with at least two embedded cone holes. The positioning plate is fixed to the outer template by countersunk bolts. Several positioning nuts are fixed around the periphery of each embedded cone hole, and a circular plate is provided. Several positioning bolts are inserted into the circular plate, and the positioning bolts are locked to the positioning nuts one by one. A load-bearing bolt is also inserted into the circular plate for screwing in the embedded cone.

2. The precise positioning device for the bracket embedded cone used in bridge tower construction as described in claim 1, characterized in that, A flange nut is coaxially fixed to the bottom surface of the annular plate, and a reinforcing plate is welded between the flange of the flange nut and the annular plate.

3. The precise positioning device for the bracket embedded cone used in bridge tower construction as described in claim 2, characterized in that, There are two embedded cone holes.

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