CN215767572U

CN215767572U - Supporting device for bridge dynamic load test

Info

Publication number: CN215767572U
Application number: CN202121869762.7U
Authority: CN
Inventors: 李玉梅; 秦冠华; 秦皓华; 苗战涛
Original assignee: Henan Zhengda Engineering Testing Consulting Co ltd
Current assignee: Henan Zhengda Engineering Testing Consulting Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-08
Anticipated expiration: 2031-08-11

Abstract

The utility model provides a supporting device for a bridge dynamic load test, which belongs to the technical field of bridge dynamic load test devices and comprises a climbing block, a first fixing block and a plurality of second fixing blocks, wherein cross bars are rotatably connected inside the first fixing block and the second fixing blocks, worms are fixedly connected to the outer sides of the cross bars, and rotating shafts are rotatably connected inside the first fixing block and the second fixing blocks. This strutting arrangement for bridge dynamic load test, through setting up the altitude mixture control structure, it is rotatory to utilize the horizontal pole to drive the worm, the worm makes the pivot rotatory through driving the worm wheel, the pivot makes the support column move along Y axle direction through driving the screw rod, thereby make the support column drive the roof and remove, make the high production of backup pad change, be convenient for highly adjust the backup pad according to experimental environment and experimental requirement, reduce the limitation that the device used, be favorable to going on of bridge excitation test.

Description

Supporting device for bridge dynamic load test

Technical Field

The utility model belongs to the technical field of bridge dynamic load test devices, and particularly relates to a supporting device for a bridge dynamic load test.

Background

An important test item in the bridge dynamic load test is a vehicle jumping test, and a vibration time course curve of the bridge under an external excitation condition is acquired through the vehicle jumping test, so that the frequency spectrum characteristic of the bridge is obtained, and the method has an important effect on analyzing the rigidity and the damage degree of the bridge. The common method for bridge jump test at present is as follows: and (3) immediately stopping the bridge after the rear wheels of the truck cross the obstacle of 5-15 cm on the bridge floor.

The supporting device for the existing bridge dynamic load test generally supports the supporting device with supporting blocks with different heights, the supporting blocks are highly fixed, the use limitation is large, the supporting device is inconvenient to adjust the heights of the supporting blocks according to the test environment, and the supporting device is inconvenient to use and is not beneficial to popularization and use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a supporting device for a bridge dynamic load test, and aims to solve the problem that the supporting device for the bridge dynamic load test in the prior art is inconvenient to use.

In order to achieve the purpose, the utility model provides the following technical scheme: the supporting device for the dynamic load test of the bridge comprises a climbing block, a first fixing block and a plurality of second fixing blocks, wherein the first fixing block and the second fixing blocks are connected with a transverse rod in a rotating mode, a worm is fixedly connected to the outer side of the transverse rod, a rotating shaft is connected to the first fixing block and the second fixing blocks in a rotating mode, a worm wheel is fixedly connected to the top of the rotating shaft and meshed with the worm, a screw rod is fixedly connected to the top of the rotating shaft, a supporting column is connected to the top of the screw rod in a threaded mode, a top plate is fixedly connected to the top of the supporting column, a supporting plate is fixedly connected to the top of the top plate, and one end of the transverse rod penetrates through the first fixing block, the second fixing block and a rotary table fixedly connected with the top plate.

In order to enable the supporting device for the bridge dynamic load test to achieve the effect of more stable and reliable work, as a preferable mode of the utility model, a first mounting groove is formed in one side of the climbing block, a first mounting block is fixedly connected to one side, close to the climbing block, of the first fixing block, the first mounting groove is matched with the first mounting block, a second mounting groove is formed in one side, far away from the first mounting block, of the first fixing block, and a second mounting block is fixedly connected to one side, close to the first fixing block, of the second fixing block.

In order to enable the supporting device for the bridge dynamic load test to achieve the effect of adjusting the length, as a preferable mode of the utility model, a third installation groove is formed in one side, away from the second installation block, of the second fixing block, and the second installation groove and the third installation groove are matched with the second installation block.

In order to enable the supporting device for the bridge dynamic load test to achieve the effect of enabling the stress on the two sides of the supporting plate to be uniform, preferably, the number of the worms and the rotating shafts is two, and the two worms and the rotating shafts are symmetrically distributed.

In order to enable the supporting device for the bridge dynamic load test to achieve the effect of more stable work, as an optimization of the utility model, rubber cushion blocks are arranged at the bottoms of the climbing block, the first fixing block and the second fixing block.

Compared with the prior art, the utility model has the beneficial effects that:

1. this strutting arrangement for bridge dynamic load test, through setting up the altitude mixture control structure, it is rotatory to utilize the horizontal pole to drive the worm, the worm makes the pivot rotatory through driving the worm wheel, the pivot makes the support column move along Y axle direction through driving the screw rod, thereby make the support column drive the roof and remove, make the high production of backup pad change, be convenient for highly adjust the backup pad according to experimental environment and experimental requirement, reduce the limitation that the device used, be favorable to going on of bridge excitation test.

2. This strutting arrangement for bridge dynamic load test through setting up the piece of climbing, first fixed block and the second fixed block of the dismouting of being convenient for, and the strutting arrangement of being convenient for transports and assembles the use, has increased the stability of strutting arrangement when using moreover, prevents that piece, first fixed block and the second fixed block of climbing from producing the separation after the atress, has improved the security when strutting arrangement uses.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the interior of a first anchor block structure according to the present invention;

FIG. 3 is a perspective view of a first fixing block structure according to the present invention;

fig. 4 is a perspective view of a second fixing block structure according to the present invention.

In the figure: 1. climbing blocks; 2. a first fixed block; 3. a second fixed block; 4. a first mounting groove; 5. a support plate; 6. a turntable; 7. a first mounting block; 8. a second mounting groove; 9. a cross bar; 10. a third mounting groove; 11. a worm; 12. a rotating shaft; 13. a worm gear; 14. a screw; 15. a support pillar; 16. a top plate; 17. and a second mounting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a supporting device for bridge dynamic load test, including climbing piece 1, first fixed block 2 and a plurality of second fixed block 3, the inside of first fixed block 2 and second fixed block 3 all rotates and is connected with horizontal pole 9, the outside fixedly connected with worm 11 of horizontal pole 9, the inside of first fixed block 2 and second fixed block 3 all rotates and is connected with pivot 12, the top fixedly connected with worm wheel 13 of pivot 12, worm wheel 13 is connected with the meshing of worm 11, the top fixedly connected with screw rod 14 of pivot 12, the top threaded connection of screw rod 14 has support column 15, the top fixedly connected with roof 16 of support column 15, the top fixedly connected with backup pad 5 of roof 16, first fixed block 2 and second fixed block 3 and fixedly connected with carousel 6 are run through to the one end of horizontal pole 9.

In the embodiment of the utility model, when the height of the supporting plate 5 needs to be adjusted, the rotary table 6 is rotated, the worm 11 of the rotary table 6 enables the worm wheel 13, the worm wheel 13 drives the rotary shaft 12 to rotate, the rotary shaft 12 drives the screw 14 to enable the supporting column 15 to move along the Y-axis direction, so that the supporting column 15 drives the top plate 16 to move, the height of the supporting plate 5 is changed, and the height of the supporting plate 5 is conveniently adjusted according to the test environment and the test requirements.

Specifically, first mounting groove 4 has been seted up to one side of piece 1 that climbs, and first fixed block 2 is close to the first installation piece 7 of one side fixedly connected with of piece 1 that climbs, and first mounting groove 4 and the first installation piece 7 looks adaptation, and first fixed block 2 is kept away from one side of first installation piece 7 and has been seted up second mounting groove 8, and second fixed block 3 is close to one side fixedly connected with second installation piece 17 of first fixed block 2.

In this embodiment: through the cooperation of first mounting groove 4 and first installation piece 7, assemble climbing piece 1 and first fixed block 2, through the cooperation between second installation piece 17 and the second mounting groove 8, assemble first fixed block 2 and second fixed block 3, the strutting arrangement of being convenient for transports and uses, and the stability of strutting arrangement when using has been increased, prevent climbing piece 1, first fixed block 2 and second fixed block 3 produce the separation after the atress, the security when strutting arrangement uses has been improved.

Specifically, the third mounting groove 10 has been seted up to the one side that the second fixed block 3 kept away from second installation piece 17, and second mounting groove 8 and third mounting groove 10 all with second installation piece 17 looks adaptation.

In this embodiment: through the cooperation between second mounting groove 8, third mounting groove 10 and the second installation piece 17, can connect a plurality of second fixed blocks 3 to adjust strutting arrangement's length, make strutting arrangement's use more convenient.

Specifically, there are two worms 11 and two rotating shafts 12, and the two worms 11 and the two rotating shafts 12 are symmetrically distributed.

In this embodiment: through setting up the worm 11 and the pivot 12 of symmetric distribution, make the bottom atress of backup pad 5 more even, promoted backup pad 5 job stabilization nature.

Specifically, the bottoms of the climbing block 1, the first fixing block 2 and the second fixing block 3 are all provided with rubber cushion blocks.

In this embodiment: through setting up the rubber cushion, increased the frictional force of strutting arrangement bottom to prevent that the car from producing at the in-process strutting arrangement that climbs and sliding, further increased the stability that strutting arrangement used.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a supporting device for bridge dynamic load test, is including climbing piece (1), first fixed block (2) and a plurality of second fixed block (3), its characterized in that: the insides of the first fixed block (2) and the second fixed block (3) are both rotatably connected with a cross rod (9), the outer side of the cross rod (9) is fixedly connected with a worm (11), the inner parts of the first fixing block (2) and the second fixing block (3) are rotatably connected with a rotating shaft (12), the top of the rotating shaft (12) is fixedly connected with a worm wheel (13), the worm wheel (13) is meshed and connected with the worm (11), the top end of the rotating shaft (12) is fixedly connected with a screw rod (14), the top of the screw rod (14) is in threaded connection with a supporting column (15), the top end of the supporting column (15) is fixedly connected with a top plate (16), the top of the top plate (16) is fixedly connected with a supporting plate (5), one end of the cross rod (9) penetrates through the first fixing block (2) and the second fixing block (3) and is fixedly connected with the rotary table (6).

2. The supporting device for the bridge dynamic load test according to claim 1, characterized in that: the climbing device is characterized in that a first mounting groove (4) is formed in one side of the climbing block (1), a first mounting block (7) is fixedly connected to one side, close to the climbing block (1), of the first fixing block (2), the first mounting groove (4) is matched with the first mounting block (7), a second mounting groove (8) is formed in one side, far away from the first mounting block (7), of the first fixing block (2), and a second mounting block (17) is fixedly connected to one side, close to the first fixing block (2), of the second fixing block (3).

3. The supporting device for the bridge dynamic load test according to claim 2, wherein: and a third mounting groove (10) is formed in one side, far away from the second mounting block (17), of the second fixing block (3), and the second mounting groove (8) and the third mounting groove (10) are matched with the second mounting block (17).

4. The supporting device for the bridge dynamic load test according to claim 1, characterized in that: the worm (11) and the rotating shaft (12) are both two, and the worm (11) and the rotating shaft (12) are both symmetrically distributed.

5. The supporting device for the bridge dynamic load test according to claim 1, characterized in that: the bottom of the climbing block (1), the bottom of the first fixing block (2) and the bottom of the second fixing block (3) are all provided with rubber cushion blocks.