Prefabricated box girder mounting and positioning device

Abstract

A prefabricated box girder installing and positioning device is characterized by comprising a limiting part, positioning parts and a connecting part, the limiting part is in an inverted trapezoid shape, the connecting part is arranged below the limiting part, the connecting part is connected with the limiting part through a bolt, the two sides of the connecting part are each provided with one positioning part, and the connecting part is connected with the positioning parts through bolts; the box girder erection positioning difficulty is reduced, and the box girder erection operation efficiency is improved; the box girder erection accuracy is improved, it is ensured that box girder erection positioning is accurate, and the construction precision is improved; the operation is simple and convenient, and the recycling frequency is high; raw materials for manufacturing material accessories are simple, common and easy to process; all the components are connected through bolts, the whole device is light, and mounting, dismounting, debugging and carrying are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge prefabricated box girder technical field especially relates to a prefabricated box girder installation positioning device. BACKGROUND

[0002] Box girder, a kind of beam in bridge engineering, hollow inside, with flange on upper part, similar to box, thus named. Single-box, multi-box etc. Box girder of reinforced concrete structure is divided into prefabricated box girder and cast-in-situ box girder. Prefabricated box girder can be erected after lower engineering is completed in combination with bridge erecting machine, can accelerate engineering progress, save construction period;Cast-in-situ box girder is mostly used in large continuous bridge. Commonly divided by material, there are two kinds, one is prestressed reinforced concrete box girder, and the other is steel box girder. Among them, the prestressed reinforced concrete box girder is constructed on site, in addition to longitudinal prestress, some are provided with transverse prestress;Steel box girder is generally processed in factory and then transported to site for installation, there is full steel structure, and there is also part of reinforced concrete pavement layer. In the process of bridge engineering construction, the positioning of prefabricated box girder erection is limited to measuring instrument dotting and line drawing, visual observation mode, and there is great difficulty in positioning, and it is difficult to guarantee the positioning accuracy of box girder erection. In order to solve the above problems, a prefabricated box girder installation positioning device is provided. UTILITARIAN CONTENT

[0003] In order to solve the above problems, the utility model provides a prefabricated box girder installation positioning device, which is characterized by comprising limiting portion, positioning portion, connecting portion, the limiting portion is inverted trapezoidal, the connecting portion is arranged below the limiting portion, the connecting portion is connected with the limiting portion through bolt, one positioning portion is arranged on each side of the connecting portion, and the connecting portion is connected with the positioning portion through bolt;

[0004] Further, the limiting portion is composed of two angle steels of ∠100*100*5 welded to 5mm steel plate, the shape of the steel plate is cut according to the shape of box girder plug, and the angle of the angle steel is welded according to the web of box girder;

[0005] Further, the two positioning portions are composed of two (200+50+200)*3mm U-shaped steels, and the length is the distance from the end of box girder to the outer side length of cushion stone after the completion of box girder erection;

[0006] Further, the connecting portion is composed of five 5mm thick steel plates welded together, the height is the distance from the bottom of box girder to the bottom of cushion stone, and the length is the distance from the end of box girder to the inner side length of cushion stone.

[0007] The utility model has the advantages of:

[0008] The utility model discloses reduce box girder erection positioning difficulty, improve the operation efficiency of box girder erection, improve the accuracy of box girder erection, ensure that box girder erection positioning is accurate, improve construction precision, simple and convenient operation, and the high turnover utilization frequency can be used, and the simple, common and easy processing of raw material of the use material accessory production, the whole device is light through bolt connection, and it is favorable to installation, dismounting, debugging and carrying. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the overall structure schematic diagram of the utility model of a kind of prefabricated box girder installation positioning device;

[0010] Figure 2 It is the schematic diagram of the explosion structure of the utility model of a kind of prefabricated box girder installation positioning device;

[0011] Figure 3 It is the schematic diagram of the local structure of the utility model of a kind of prefabricated box girder installation positioning device;

[0012] As shown in the drawing: 1 limit part, 2 positioning part, 3 connecting part. DETAILED DESCRIPTION

[0013] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0014] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0015] In the description of the utility model, it is to explain, unless otherwise definite and limited, the term "installation", "link", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model in the specific circumstances.In addition, the technical features involved in the different embodiments of the utility model described below can be combined as long as they do not conflict with each other.

[0016] Embodiment 1

[0017] The utility model provides a prefabricated box girder installation positioning device, its characterized in that including limiting portion 1, positioning portion 2, connecting portion 3, limiting portion 1 presents inverted trapezoid, limiting portion 1 below is provided with connecting portion 3, and connecting portion 3 is connected with limiting portion 1 through bolt, and connecting portion 3 is equipped with one positioning portion 2 in each side, and connecting portion 3 is connected with positioning portion 2 through bolt;

[0018] Further, limiting portion 1 is composed of two ∠100x100x5 angle steels welded to 5mm steel plate, the steel plate shape is cut according to the box girder plug shape, and the angle of the angle steel is welded according to the box girder web plate;

[0019] Further, two positioning portions 2 are composed of two (200+50+200)x3mm U-shaped steels, and the length is the distance from the box girder end head to the outside edge length of the cushion stone after the box girder erection is completed;

[0020] Further, connecting portion 3 is composed of five 5mm thick steel plates welded together, the height is the distance from the box girder bottom to the cushion stone bottom, and the length is the distance from the box girder end head to the inside edge length of the cushion stone.

[0021] Embodiment 2

[0022] In use, according to the device drawing, the steel material is processed and spliced and assembled at a construction site steel processing yard, the limiting part 1, the positioning part 2 and the connecting plate are connected by bolts, the positioning part 2 and the connecting plate form a fixture, the limiting part 1 is connected at the center position of the fixture by bolts, and is used to adjust the position of the box girder during hoisting. Then the device is fixed at the side of the cushion stone, the box girder is accurately positioned according to the position of the limiting part 1, the box girder is pre-assembled at the pre-hoisting position of the prefabricated beam yard, the inner contour of the device is ensured to match the outer contour of the bottom of the box girder, deviation in the hoisting process is avoided, and a hoisting auxiliary line is marked at the hoisting position of the box girder. Through transportation and hoisting, the device is installed at the top of the pier column or the top of the bent cap support cushion stone, the device is placed at the position of the cushion stone, the positioning part 2 is clamped at the long and short side positions of the cushion stone according to the size of the cushion stone, the box girder to be erected is positioned by the limiting part 1, when the box girder is hoisted, the end position of the box girder coincides with the limiting part 1, the coincidence of the position of the box girder and the device and the coincidence of the center line of the box girder and the center line of the device are checked, the position of the device is re-measured by measuring instruments, the position of the device is ensured to be consistent with the planned hoisting position, the prefabricated box girder is hoisted on site, the hoisting angle and position are adjusted, the auxiliary line of the box girder is overlapped with the edge line of the device, and then the hoisting work is completed. The device is removed from the support cushion stone, and is recycled and adjusted for secondary circulation.

[0023] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. The various components mentioned in the utility model are common technologies in the prior art, which should be understood by those skilled in the art. The utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A precast box girder installation positioning device, characterized by, The limiting part, the positioning part, the connecting part, the limiting part is inverted trapezoid, the connecting part is arranged below the limiting part, the connecting part is connected with the limiting part through the bolt, one positioning part is arranged on both sides of the connecting part, the connecting part is connected with the positioning part through the bolt; The limiting part is composed of two angle steels of ∠100*100*5 welded to a 5mm steel plate, the shape of the steel plate is cut according to the shape of the box girder plug, and the angle of the angle steel is welded according to the web of the box girder.

2. The precast box beam installation positioning device according to claim 1, wherein, Two positioning parts are composed of two (200+50+200)*3mm U-shaped steels, and the length is the distance from the end of the box girder to the outer side length of the cushion stone after the box girder is erected.

3. The precast box beam installation positioning device according to claim 1, wherein, The connecting part is composed of five 5mm thick steel plates, the height is the distance from the bottom of the box girder to the bottom of the cushion stone, and the length is the distance from the end of the box girder to the inner side length of the cushion stone.

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