CN205156894U - Case roof beam scene displacement sensor fixed bolster for loading test - Google Patents

Abstract

The utility model discloses a displacement sensor fixing bracket for field load test of a box girder, which comprises a crossbeam, two ends of the crossbeam are respectively provided with adjustable support frames for supporting the crossbeam, and at least one movable shelf is arranged on the crossbeam, and the movable shelf There is a locking device for locking the mobile shelf on the crossbeam. There are several sensor brackets for placing sensors at vertical intervals on both sides of the mobile shelf. The sensor brackets on both sides of the mobile shelf are mutually misaligned. The top of the shelf is provided with a sensor limit hole on the mobile shelf. The utility model provides a bracket that can arrange multiple sensors at different positions at the same time. The bracket is convenient for on-site layout, and multiple sensor positions can be arranged at the same time. The bracket is easy to disassemble, can be used repeatedly, and is easy to carry. The bracket effectively improves the working efficiency of laying out the sensors on the test site.

Description

Fixed Bracket for Displacement Transducer Used in Field Load Test of Box Girder

technical field

The utility model relates to the technical field of bridge manufacture, in particular to a displacement sensor fixing bracket for field load tests of box girders.

Background technique

With the rapid development of modern transportation construction, the number of bridge projects is increasing, and the volume of factory prefabricated box girders is also increasing. In order to ensure the quality of the prefabricated box girder, in addition to the quality supervision during the prefabricated construction, the formed box girder structure is also subject to sampling inspection. The main form of sampling inspection is static load test.

Before the static load test, some key displacement and stress measuring points are usually arranged, and some sensors are arranged. As the volume of the box girder structure is getting larger and the span is getting longer and longer, the layout of the lateral displacement sensor requires a large number of brackets for fixing. The traditional displacement sensor bracket adopts a single-point magnet bracket. Each bracket needs to be fixed on an iron column or a hard object of a certain height. The number is large, and the displacement of heavy objects is difficult. The layout is time-consuming and labor-intensive, and the work efficiency is low. Therefore, it is urgent to invent an easy-to-disassemble and reusable displacement sensor fixing bracket in order to improve the efficiency of sensor layout.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies in the prior art, and provide a displacement sensor fixing bracket for field load testing of box girders, which is easy to disassemble and can be used repeatedly.

The technical scheme adopted by the utility model to solve the technical problem is: a displacement sensor fixed support for box girder field load test, including a beam, the two ends of the beam are respectively provided with adjustable support frames for supporting the beam, and the beam is provided with at least A mobile shelf, the mobile shelf is provided with a locking device that locks the mobile shelf on the beam, and the two sides of the mobile shelf are respectively equipped with a number of sensor brackets for placing sensors at vertical intervals. The sensor brackets are mutually staggered, and the sensor brackets are provided with sensor limiting holes on the mobile shelf.

The beam is an angle steel body, and the mobile shelf is a channel steel body. The channel steel body mobile shelf has a bottom plate and two vertical plates integrated with each other. The two vertical plates are respectively provided with L-shaped gaps matching the cross beam. The steel body is movably placed vertically on the beam through the two L-shaped notches; the locking device includes an upper cover and a lower cover that cover the L-shaped notch to prevent the beam from falling off from the L-shaped notch, and the upper cover and the lower cover The cover plate is fixed at the opening of the channel steel body, and the position where the upper cover plate and the lower cover plate cover the L-shaped gap is provided with a set screw that can prevent the channel steel body from moving on the crossbeam.

The adjustable support frame includes a top-down column, a base plate and an adjustable tripod, and the front of the base plate is provided with a horizontal air bubble for detecting the level of the base plate.

The structure in which the beam is arranged on the adjustable support frame is that the column is provided with a horizontal beam supporting the beam, and a diagonal brace is provided at the angle between the column and the horizontal beam, and the upper end of the diagonal brace is connected with the horizontal beam. Detachable connection, the lower end of the diagonal brace is detachably connected with the column.

The beneficial effects of the utility model are: the utility model provides a bracket that can arrange multiple sensors at different positions at the same time. Reusable and easy to carry, the sensor bracket effectively improves the work efficiency of laying out sensors on the test site.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the utility model mobile shelf;

Fig. 3 is a structural schematic diagram of the locking device of the present invention;

Fig. 4 is a structural schematic diagram of the utility model beam arranged on the adjustable support frame.

In the figure: 1. Adjustable tripod; 2. Base plate; 3. Upright column; 4. Horizontal cantilever beam; 5. Diagonal brace; 6. Beam; 7. Mobile shelf; .L-shaped notch; 71. Lower cover plate; 72. Upper cover plate; 73. Positioning screw; 74. Sensor bracket; 75. Sensor limit hole.

detailed description

The utility model is described further in conjunction with accompanying drawing now. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

A kind of box girder site load test shown in Figure 1, 2, 3, 4 uses the displacement sensor fixed bracket, comprises crossbeam 6, and the two ends of crossbeam 6 are respectively provided with the adjustable support frame that is used to support crossbeam 6, and crossbeam 6 is provided with There are two mobile shelves 7, and the mobile shelves 7 can move back and forth on the crossbeam 6 to change their positions. The mobile shelf 7 is provided with a locking device for locking the mobile shelf 7 on the crossbeam 6. Sensor brackets 74 for placing the displacement sensors 8 are respectively arranged at several vertical intervals. The sensor brackets 74 on both sides of the mobile shelf 7 are mutually misaligned. The crossbeam 6 described in the sensor limit hole 75 is an angle steel body, and the moving shelf 7 is a channel steel body. The L-shaped notch 70 that the crossbeam 6 matches, the channel steel body is movably vertically arranged on the crossbeam 6 through the two L-shaped notches 70; The upper cover plate 72 and the lower cover plate 71 that come off, the upper cover plate 72 and the lower cover plate 71 are fixed at the opening of the channel steel body, and the position where the upper cover plate 72 and the lower cover plate 71 cover the L-shaped gap 70 is provided with a Stop the set screw 73 that the channel steel body moves on the crossbeam 6. After the mobile shelf 7 slides to the preset position on the crossbeam 6, by adjusting the set screw 73, the position of the mobile shelf 7 on the crossbeam 6 can be locked.

The adjustable support frame includes a top-down column 3, a base plate 2 and an adjustable tripod 1, the front of the base plate 2 is provided with a horizontal bubble 22 for detecting the level of the base plate 2, and the adjustable tripod 1 is a measuring device For a conventional tripod, the base plate 2 is detachably connected to the adjustable tripod 1, and the lower end of the column 3 is fixedly connected to the base plate 2.

The structure in which the crossbeam 6 is arranged on the adjustable support frame is that the column 3 is provided with a horizontal beam 4 supporting the beam 6, and a diagonal brace 5 is provided at the angle between the column 3 and the horizontal beam 4, The upper end of the diagonal brace 5 is detachably connected to the horizontal beam 4, the lower end of the diagonal brace 5 is detachably connected to the column 3, the crossbeam 6 is detachably connected to the horizontal beam 4, and the horizontal beam 4 is detachably connected to the column 3 .

During the static load test of the box girder, the location and quantity of the measuring points of the box girder are first determined according to the calculation, and then the sensor is arranged using the bracket device. The first step is to support the adjustable support frame along the length on one side of the box girder, install the horizontal cantilever 4, the diagonal brace 5 and the beam 6; the second step is to install the mobile shelf 7 and adjust the mobile shelf 7 positions, so that it corresponds to the measuring point on the box girder; the third step is to install the displacement sensor 8 and fix it firmly; the fourth step is to move the device of the utility model as a whole so that the shaft rod of the displacement sensor 8 withstands the box girder In the fifth step, adjust the horizontal air bubble 22 on the base plate 2 so that the support structure remains horizontal; finally connect the displacement sensor 8 leads to the static strain acquisition equipment used for the test to read the test data during the test. The utility model device can arrange a plurality of sensors at different positions at one time, is convenient to disassemble and assemble, and has flexible application, and effectively improves the work efficiency of laying sensors at the box girder load test site. The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model. Equivalent changes or modifications made by the spirit of the present utility model shall be covered within the protection scope of the present utility model.

Claims (4)

1. a case beam situ loading displacement transducer fixed support, it is characterized in that: comprise crossbeam (6), crossbeam (6) two ends are respectively equipped with the adjustable supporter for supporting traverse (6), crossbeam (6) is provided with at least one mobile shelving (7), mobile shelving (7) is provided with the locking device be locked in by mobile shelving (7) on crossbeam (6), mobile shelving (7) both sides are respectively equipped with the sensor bracket (74) of some vertical spaced placement sensors, sensor bracket (74) the mutual dislocation arrangement of mobile shelving (7) both sides, sensor bracket (74) top is provided with the sensor spacing hole (75) be positioned on mobile shelving (7).

2. case beam situ loading displacement transducer fixed support according to claim 1, it is characterized in that: described crossbeam (6) is angle steel body, described mobile shelving (7) is channel-section steel body, channel-section steel body mobile shelving (7) has a base plate and two risers of one mutually, two risers are respectively equipped with the L v notch v (70) matched with crossbeam (6), channel-section steel body is vertically shelved on crossbeam (6) by this two L v notch v (70) movably; Described locking device comprises and covers in L v notch v (70) with the upper cover plate (72) preventing crossbeam (6) and come off from L v notch v (70) and lower cover (71), upper cover plate (72) and lower cover (71) are fixed on channel-section steel body opening part, and the position that upper cover plate (72) and lower cover (71) cover in L v notch v (70) is provided with the dog screw (73) that channel-section steel body can be stoped in the upper movement of crossbeam (6).

3. case beam situ loading displacement transducer fixed support according to claim 1, it is characterized in that: described adjustable supporter comprises top-down column (3), bedplate (2) and adjustable tripod (1), described bedplate (2) front is provided with the horizontal bubble (22) detecting bedplate (2) horizontality.

4. case beam situ loading displacement transducer fixed support according to claim 3, it is characterized in that: the structure that described crossbeam (6) is arranged on adjustable supporter is, column (3) is provided with the horizontal outrigger (4) of supporting traverse (6), diagonal brace (5) is provided with in the angle of described column (3) and horizontal outrigger (4), diagonal brace (5) upper end is connected with horizontal outrigger (4) is removable, and diagonal brace (5) lower end is connected with column (3) is removable.