CN212340842U

CN212340842U - Concrete box girder static load test device

Info

Publication number: CN212340842U
Application number: CN202021060695.XU
Authority: CN
Inventors: 苗安云; 贾祥路; 丁帅; 王红荣
Original assignee: Shandong Jinyuda Inspection And Testing Co ltd
Current assignee: Shandong Jinyuda Inspection And Testing Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-01-12
Anticipated expiration: 2030-06-11

Abstract

The utility model provides a concrete box girder static test device, utilize the loop wheel machine to carry the concrete box girder to the top that is located two cushion, the concrete box girder is placed along the fore-and-aft direction level, later the frame that power device drive two stands and crossbeam constitute is walked along the guide rail board, move to the concrete box girder directly over until the crossbeam, later each jack action, its piston rod stretches out the back and presses in concrete box girder upper end, thereby realize the effect of exerting pressure to each position of concrete box girder, accomplish the concrete box girder static test, the piston rod of each jack inwards withdraws after the experiment finishes, later power device drive stand is the backward movement under the effect of rolling mechanism, it removes to the outside end of concrete box girder, can use the loop wheel machine to hang away the concrete box girder that the experiment was accomplished this moment. The whole test process is simple and convenient, and the test efficiency of the static load test of the concrete box girder is improved.

Description

Concrete box girder static load test device

Technical Field

The utility model relates to a bridge construction equipment technical field, concretely relates to concrete box girder static load test device.

Background

A concrete box girder is arranged between every two adjacent piers of the bridge and is formed by pouring concrete after the steel mesh sheets are welded and formed. After the concrete box girder is manufactured, a static load test is carried out to measure whether the deflection of the bridge after being pressed is within the standard. The existing static load test device is characterized in that two pad beams are fixed on the ground, the two ends of the concrete box beam are placed on the pad beams, then the fixed beam is lifted to the top of the concrete box beam through a crane, then the fixed beam and the pad beams are connected through reinforcing steel bars, a plurality of jacks are arranged between the lower end face of the fixed beam and the concrete box beam along the length direction of the concrete box beam, and piston rods of the jacks generate static load pressure to the concrete box beam after extending out. After the test is finished, the reinforcing steel bars are removed, the jacks are removed, the fixed beam is lifted away by the crane, and then the concrete box beam is lifted away, so that the whole operation process is complicated, and the test efficiency is influenced.

Disclosure of Invention

The utility model discloses an overcome not enough of above technique, provide an improve concrete box girder static test efficiency's device.

The utility model overcomes the technical scheme that its technical problem adopted is:

a concrete box girder static load test device includes:

the lower parts of the front end and the rear end of the concrete box girder are respectively arranged on the corresponding cushion blocks on the same side;

the two upright posts are respectively arranged at the front end and the rear end of the concrete box girder, the cross beam is arranged above the two upright posts, and the lower end of the cross beam is fixedly connected with the upper ends of the upright posts at the same side;

the two fixing plates are respectively arranged along the left and right directions and are respectively positioned at the outer side ends of the concrete box girder, and the fixing plates are fixed on the ground through foundation bolts;

the lower end of the upright post is in rolling connection with the corresponding guide rail plate at the same side through a rolling mechanism;

the power device is used for driving the rack formed by the two upright posts and the cross beam to move along the left and right directions of the guide rail plate; and

and the jacks are arranged at the lower end of the cross beam at intervals along the length direction of the cross beam, and when the cross beam is positioned right above the concrete box beam, piston rods of the jacks are contacted with the upper end surface of the concrete box beam.

The rolling mechanism comprises lower rollers which are respectively installed on the left side and the right side of the lower end of the cross beam in a rotating mode through bearings II, upper rollers which are installed on the inner side of the upper end of the cross beam in a rotating mode through bearings I and gears which are installed on the outer side of the upper end of the cross beam in a rotating mode through bearings III, wherein a boss is arranged at the upper end of the guide rail plate, a rack is arranged on the guide rail plate located at the outer side end of the boss along the length direction of the guide rail plate, the lower rollers are in rolling contact with the lower end face of the guide rail plate, the upper rollers are.

The power device comprises a speed reducer arranged on the cross beam, an output shaft of the speed reducer is in transmission connection with a gear, and the speed reducer

The vertical column and the cross beam are connected through the rib plates.

The utility model has the advantages that: the concrete box girder is hoisted to the position above the two cushion blocks by utilizing the crane, the concrete box girder is horizontally placed along the front-back direction, then the power device drives the rack formed by the two stand columns and the cross beam to walk along the guide rail plate until the cross beam moves to the position right above the concrete box girder, then each jack acts, a piston rod of each jack extends out and presses the upper end of the concrete box girder, thereby the effect of applying pressure to each position of the concrete box girder is realized, the static load test of the concrete box girder is completed, the piston rod of each jack retracts inwards after the test is completed, then the power device drives the stand columns to move backwards under the effect of the rolling mechanism, the stand columns move to the outer side end of the concrete box girder, and the crane can be used for hoisting the tested concrete box girder. The whole test process is simple and convenient, and the test efficiency of the static load test of the concrete box girder is improved.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic structural view of a guide rail plate according to the present invention;

in the figure, a cross beam 1, a vertical column 3, a rib plate 4, a jack 5, a concrete box girder 6, a cushion block 7, a fixing plate 8, a foundation bolt 9, a bearing I10, an upper roller 11, a bearing II 12, a lower roller 13, a bearing III 14, a gear 15, a speed reducer 16, a motor 17, a guide rail plate 18, a boss 19 and a rack are arranged.

Detailed Description

The present invention will be further explained with reference to fig. 1, fig. 2 and fig. 3.

A concrete box girder static load test device includes: the lower parts of the front end and the rear end of the concrete box girder 5 are respectively arranged on the corresponding cushion blocks 6 on the same side; the two upright posts 2 are respectively arranged at the front end and the rear end of the concrete box girder 5, the cross beam 1 is arranged above the two upright posts 2, and the lower end of the cross beam 1 is fixedly connected with the upper ends of the upright posts 2 at the same side; the two fixing plates 7 are respectively arranged along the left and right directions, the two fixing plates 7 are respectively positioned at the outer side ends of the concrete box girder 5, and the fixing plates 7 are fixed on the ground through foundation bolts 8; the guide rail plate 17 is fixed at the upper end of the fixed plate 7, and the lower end of the upright post 2 is in rolling connection with the corresponding guide rail plate 17 at the same side through a rolling mechanism; the power device is used for driving the rack formed by the two upright posts 2 and the cross beam 1 to move along the left and right directions of the guide rail plate 17; and the jacks 4 are arranged at the lower end of the crossbeam 1 at intervals along the length direction of the crossbeam 1, and when the crossbeam 1 is positioned right above the concrete box girder 5, piston rods of the jacks 4 are contacted with the upper end face of the concrete box girder 5. When a static load test needs to be carried out on the concrete box girder 5, the concrete box girder 5 is lifted to be located above the two cushion blocks 6 by using a crane, the concrete box girder 5 is horizontally placed along the front-back direction, then the power device drives the rack formed by the two upright posts 2 and the cross beam 1 to move along the guide rail plate 17 until the cross beam 1 moves to be right above the concrete box girder 5, then each jack 4 acts, a piston rod of each jack is pressed at the upper end of the concrete box girder 5 after extending out, so that the effect of applying pressure to each position of the concrete box girder 5 is realized, the static load test on the concrete box girder 5 is completed, the piston rod of each jack 4 retracts inwards after the test is completed, then the power device drives the upright posts 2 to move backwards under the effect of the rolling mechanism, the upright posts move to the outer side end of the concrete box girder 5, and at the moment, the crane can be used for lifting the tested concrete box girder 5. The whole test process is simple and convenient, and the test efficiency of the static load test of the concrete box girder is improved.

Further, the rolling mechanism is of a structure comprising lower rollers 12 rotatably mounted on the left side and the right side of the lower end of the cross beam 1 through bearings II 11, upper rollers 10 rotatably mounted on the inner side of the upper end of the cross beam 1 through bearings I9, and gears 14 rotatably mounted on the outer side of the upper end of the cross beam 1 through bearings III 13, wherein a boss 18 is arranged at the upper end of the guide rail plate 17, a rack 19 is arranged on the guide rail plate 17 at the outer side end of the boss 18 along the length direction of the guide rail plate 17, the lower rollers 12 are in rolling contact with the lower end face of the guide rail plate 17, the upper rollers 10 are in rolling contact with the guide rail plate 17 at the inner side end of. When the power device drives the upright 2 to move along the guide rail plate 17, the lower roller 12 rolls along the lower end surface of the guide rail plate 17, the upper roller 10 rolls along the upper end surface of the guide rail plate 17, the gear 14 rolls on the rack 19, and the lower roller 12 is reversely buckled at the lower end of the guide rail plate 17, so that when the jack 4 acts, the cross beam 1 is subjected to an upward force, and the lower roller 12 is in contact with the lower end surface of the guide rail plate 17, so that the force is transmitted to the fixing plate 7.

Further, the power unit includes a speed reducer 15 mounted on the cross beam 1, an output shaft of the speed reducer 15 is connected to the gear 14, and an input shaft of the speed reducer 15 is connected to the motor 16. The motor 16 rotates and is decelerated through a speed reducer 15

Furthermore, the vertical column structure also comprises a rib plate 3, and the rib plate 3 is used for connecting the vertical column 2 with the cross beam 1. The connection strength between the cross beam 1 and the upright post 2 can be improved by arranging the rib plates 3, and the use reliability of the equipment is improved.

Claims

1. The utility model provides a concrete box girder static test device which characterized in that includes:

the lower parts of the front end and the rear end of the concrete box girder (5) are respectively arranged on the corresponding cushion blocks (6) on the same side;

the two upright posts (2) are respectively arranged at the front end and the rear end of the concrete box girder (5), the cross beam (1) is arranged above the two upright posts (2), and the lower end of the cross beam (1) is fixedly connected with the upper ends of the upright posts (2) on the same side;

the two fixing plates (7) are respectively arranged along the left and right directions, the two fixing plates (7) are respectively positioned at the outer side ends of the concrete box girder (5), and the fixing plates (7) are fixed on the ground through foundation bolts (8);

the guide rail plate (17) is fixed at the upper end of the fixing plate (7), and the lower end of the upright post (2) is in rolling connection with the guide rail plate (17) corresponding to the same side through a rolling mechanism;

the power device is used for driving the rack consisting of the two upright posts (2) and the cross beam (1) to move along the left and right directions of the guide rail plate (17); and

the jacks (4) are arranged at the lower end of the cross beam (1) at intervals along the length direction of the cross beam (1), and when the cross beam (1) is positioned right above the concrete box beam (5), piston rods of the jacks (4) are in contact with the upper end face of the concrete box beam (5).

2. The concrete box girder static load test device according to claim 1, characterized in that: the rolling mechanism comprises lower rollers (12) which are respectively rotatably installed on the left side and the right side of the lower end of the cross beam (1) through bearings II (11), upper rollers (10) which are installed on the inner side of the upper end of the cross beam (1) through bearings I (9) and gears (14) which are installed on the outer side of the upper end of the cross beam (1) through bearings III (13), wherein a boss (18) is arranged at the upper end of the guide rail plate (17), a rack (19) is arranged on the guide rail plate (17) which is located on the outer side end of the boss (18) along the length direction of the guide rail plate, the lower rollers (12) are in rolling contact with the lower end face of the guide rail plate (17), the upper rollers (10) are in rolling contact with the guide rail plate (17) on the inner side end of the boss.

3. The concrete box girder static load test device according to claim 1, characterized in that: the power device comprises a speed reducer (15) arranged on the cross beam (1), an output shaft of the speed reducer (15) is in transmission connection with a gear (14), and an input shaft of the speed reducer (15) is connected with a motor (16).

4. The concrete box girder static load test device according to claim 1, characterized in that: the vertical column structure is characterized by further comprising rib plates (3), wherein the rib plates (3) are used for connecting the vertical column (2) with the cross beam (1).