CN209878245U - An experimental device for carrying capacity of bridge single girder structure - Google Patents

Abstract

The utility model discloses an experimental device for the carrying capacity of a bridge single-girder structure, which comprises a horizontal plate, a level is placed on the upper end of the horizontal plate, and a fixing mechanism for fixing the level is arranged on the horizontal plate. The lower end of the horizontal plate is fixedly connected with a vertical plate, the lower end of the vertical plate is provided with a groove, and an extension plate is slidably connected to the groove, and an adjustment mechanism for adjusting the extension plate is provided in the groove. The lower end of the extension plate is fixedly connected to the bottom plate, the lower end of the bottom plate is fixedly connected with pins, the side wall of the vertical plate is slidably connected with a slide bar, and the end of the slide bar away from the vertical plate is fixedly connected with a fixed plate. The utility model has relatively simple installation and convenient operation.

Description

An experimental device for carrying capacity of bridge single girder structure

technical field

The utility model relates to the technical field of bridge measurement, in particular to an experimental device for the bearing capacity of a single beam structure of a bridge.

Background technique

Bridges generally refer to structures erected on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to cross mountains, poor geology, or meet other traffic needs to make traffic more convenient. Bridges are generally composed of superstructure, substructure, supports and auxiliary structures. The superstructure is also called bridge span structure, which is the main structure for crossing obstacles; The force transmission device installed at the supporting place between the span structure and the bridge pier or abutment; the auxiliary structures refer to the bridge head board, conical slope protection, bank revetment, diversion works, etc.

After the existing bridges are built, it is necessary to detect the deflection of the bridge. The existing detection devices are generally large in size, not suitable for some smaller bridges, and the operation is cumbersome and not easy to carry.

For this reason, we propose an experimental device for the bearing capacity of bridge single-girder structures to solve the above problems.

Utility model content

The purpose of the utility model is to solve the problem that the detection device in the prior art is relatively large and not suitable for small bridges, and proposes an experimental device for the bearing capacity of a bridge single beam structure.

In order to achieve the above object, the utility model adopts the following technical solutions:

An experimental device for carrying capacity of a bridge single girder structure, comprising a horizontal plate, a level is placed on the upper end of the horizontal plate, a fixing mechanism for fixing the level is arranged on the horizontal plate, and the lower end of the horizontal plate is fixed A vertical board is connected, the lower end of the vertical board is provided with a groove, and an extension board is slidably connected in the groove, and an adjustment mechanism for adjusting the extension board is provided in the groove, and the lower end of the extension board The bottom plate is fixedly connected, the lower end of the bottom plate is fixedly connected with pins, the side wall of the vertical plate is slidably connected with a slide bar, and the end of the slide bar away from the vertical plate is fixedly connected with a fixed plate.

Preferably, the fixing mechanism includes an adjustment slot arranged on the top of the horizontal plate, a two-way threaded rod is rotatably connected to the inside of the adjustment slot, and the outer thread of the two-way threaded rod is provided with two threaded blocks, and the outer sides of the two threaded blocks The walls are all slidingly connected to the inner side wall of the adjustment groove, and the ends of the two threaded blocks away from the bottom of the adjustment groove both extend to the outside of the adjustment groove and are coaxially fixedly connected with a splint, and one end of the two-way threaded rod rotates through the horizontal plate and A first rotating handle is fixedly connected to the coaxial shaft.

Preferably, the two threaded blocks are provided with threaded holes matching the two-way threaded rods, and the threads in the two threaded holes have opposite directions of rotation.

Preferably, the adjustment mechanism includes a threaded rod that is rotatably connected to the top of the groove, the lower end of the threaded rod is threaded with the upper end of the extension plate, a rotating rod is provided in the groove, and the rotating rod and the threaded rod The transmission connection between them is through a helical gear set, and one end of the rotating rod rotates through the vertical plate and is fixedly connected with the second rotating handle coaxially.

Preferably, the helical gear set includes a first helical gear and a second helical gear meshing with each other, the first helical gear is coaxially fixedly connected to the rotating rod, and the second helical gear is coaxially fixedly connected to the threaded rod.

Preferably, a scale value is engraved on the outer side wall of the riser.

Preferably, a T-shaped chute is vertically provided on the side wall of the vertical plate, a slider is slidably connected in the T-shaped chute, and the end of the slide bar away from the fixing plate extends into the T-shaped chute and Fixed connection with slider.

Compared with the prior art, the beneficial effects of the utility model are:

1. By setting the fixing mechanism and turning the first handle, the first handle drives the two-way threaded rod to rotate, the two-way threaded rod drives the two threaded blocks to move relative to each other, and the two threaded blocks drive the two splints to move until the two splints are facing each other The side wall of the side wall is in contact with the two ends of the level and clamped, so that the level can be clamped, and when the utility model is installed, it can be placed horizontally;

2. By setting the adjustment mechanism and turning the second handle, the second handle drives the rotating rod to rotate, the rotating rod drives the threaded rod to rotate, the threaded rod drives the extension plate to rise and fall, and the extension plate drives the bottom plate and pins to rise and fall until the pins are inserted The ground below the bridge bottom or the bottom of the lake, so as to fix the vertical plate and the extension plate, and then connect the fixed plate to the side wall of the bridge body through bolts to measure the deflection of the bridge body, which is simple to install and easy to operate.

The utility model has relatively simple installation and convenient operation.

Description of drawings

Fig. 1 is the front structure perspective view of a kind of bridge single girder structure carrying capacity experimental device proposed by the utility model;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is a perspective view of the side structure of an experimental device for carrying capacity of a bridge single-girder structure proposed by the utility model.

In the figure: 1 horizontal plate, 2 level ruler, 3 fixing mechanism, 4 vertical plate, 5 groove, 6 extension plate, 7 adjusting mechanism, 8 base plate, 9 pin, 10 slider, 11 sliding rod, 12 fixing plate, 13 adjustment slot, 14 threaded rod, 15 threaded block, 16 splint, 17 first turning handle, 18 threaded rod, 19 turning rod, 20 helical gear set, 21 second turning handle, 22 first helical gear, 23 second helical Gear, 24 scale value, 25 T-shaped chute.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, an experimental device for the bearing capacity of a bridge single-girder structure includes a horizontal plate 1, a level 2 is placed on the upper end of the horizontal plate 1, and a fixing mechanism 3 for fixing the level 2 is provided on the horizontal plate 1 , it is worth mentioning that the fixing mechanism 3 includes an adjustment groove 13 arranged on the upper end of the horizontal plate 1, the adjustment groove 13 is rotationally connected with a bidirectional threaded rod 14, and the external thread of the bidirectional threaded rod 14 is provided with two threaded blocks 15. It is illustrated that two threaded blocks 15 are provided with threaded holes matched with the two-way threaded rod 14, the screw threads in the two threaded holes have opposite directions of rotation, and the outer sidewalls of the two threaded blocks 15 are all aligned with the inner side of the adjustment groove 13. The walls are slidingly connected, and the ends of the two threaded blocks 15 away from the inner bottom of the adjustment groove 13 extend to the outside of the adjustment groove 13 and are coaxially fixedly connected with a splint 16, and one end of the two-way threaded rod 14 rotates through the horizontal plate 1 and is coaxially fixedly connected with a The first turning handle 17 is fixedly connected with the vertical plate 4 at the lower end of the horizontal plate 1. It should be noted that the scale value 24 is engraved on the outer wall of the vertical plate 4, and a T-shaped slide is vertically arranged on the side wall of the vertical plate 4. Slot 25, T-shaped chute 25 is slidably connected with slider 10, the end of slide bar 11 away from fixed plate 12 extends into T-shaped chute 25 and is fixedly connected with slider 10, and the lower end of vertical plate 4 is provided with a groove 5.

In the utility model, an extension plate 6 is slidably connected in the groove 5, and an adjustment mechanism 7 for adjusting the extension plate 6 is arranged in the groove 5. The connected threaded rod 18, the lower end of the threaded rod 18 is threadedly connected with the upper end of the extension plate 6, the groove 5 is provided with a rotating rod 19, and the rotating rod 19 and the threaded rod 18 are connected through a helical gear set 20. Specifically, The helical gear set 20 includes a first helical gear 22 and a second helical gear 23 meshing with each other, the first helical gear 22 is coaxially fixedly connected with the rotating rod 19, the second helical gear 23 is coaxially fixedly connected with the threaded rod 18, and the rotating rod 19 is coaxially fixedly connected. One end of 19 rotates through the riser 4 and is fixedly connected with the second handle 21 coaxially. The lower end of the extension plate 6 is fixedly connected to the base plate 8. The lower end of the base plate 8 is fixedly connected to the pin 9, and slides on the side wall of the riser 4 A slide bar 11 is connected, and an end of the slide bar 11 away from the vertical plate 4 is fixedly connected with a fixed plate 12 .

When the utility model installs the level ruler 2, the level ruler 2 is placed on the horizontal plate 1, and then the first rotating handle 17 is rotated, and the first rotating handle 17 drives the two-way threaded rod 14 to rotate, and the two-way threaded rod 14 drives two screw threads The block 15 relatively moves, and the two threaded blocks 15 drive the two splints 16 to move until the opposite side walls of the two splints 16 are in contact with the two ends of the spirit level 2 and snapped together; The handle 21 drives the rotating rod 19 to rotate, the rotating rod 19 drives the first helical gear 22 to rotate, the first helical gear 22 drives the second helical gear 23 to rotate, the second helical gear 23 drives the threaded rod 18 to rotate, and the threaded rod 18 drives the extension plate 6 Lifting, the extension plate 6 drives the bottom plate 8 and the pins 9 up and down until the appropriate length, so that the pins 9 are inserted into the ground below the bridge bottom or the bottom of the lake, then keep the level 2 level, and then fix the fixed plate 12 with the bridge body by bolts On the side wall, the load test can be carried out on the bridge body, and the bridge body can be lowered and repeated to record, and the bridge deflection can be detected by calculation.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (7)

1. An experimental device for the bearing capacity of a bridge single beam structure, comprising a horizontal plate (1), characterized in that a level (2) is placed on the upper end of the horizontal plate (1), and a horizontal ruler (2) is arranged on the horizontal plate (1). There is a fixing mechanism (3) for fixing the level (2), the lower end of the horizontal plate (1) is fixedly connected with a vertical plate (4), and the lower end of the vertical plate (4) is provided with a groove (5 ), the groove (5) is slidingly connected with an extension plate (6), and the groove (5) is provided with an adjustment mechanism (7) for adjusting the extension plate (6), and the extension plate ( The lower end of 6) is fixedly connected with the bottom plate (8), the lower end of the bottom plate (8) is fixedly connected with pins (9), and the side wall of the vertical plate (4) is slidably connected with a sliding rod (11), so The end of the slide bar (11) away from the vertical plate (4) is fixedly connected with a fixed plate (12). 2. The test device for carrying capacity of a bridge single-girder structure according to claim 1, characterized in that, the fixing mechanism (3) includes an adjustment groove (13) arranged on the upper end of the horizontal plate (1), and the adjustment A two-way threaded rod (14) is connected to the groove (13) for rotation. The external thread of the two-way threaded rod (14) is provided with two threaded blocks (15). The inner side wall of (13) is slidingly connected, and the ends of the two threaded blocks (15) away from the inner bottom of the adjustment groove (13) both extend to the outside of the adjustment groove (13) and are coaxially fixedly connected with a splint (16). One end of the two-way threaded rod (14) rotates through the horizontal plate (1) and is coaxially fixedly connected with a first rotating handle (17). 3. The test device for carrying capacity of a bridge single-girder structure according to claim 2, characterized in that, two threaded blocks (15) are provided with threaded holes matching the two-way threaded rod (14), The threads in the two threaded holes have opposite directions of rotation. 4. The test device for carrying capacity of a bridge single-girder structure according to claim 1, characterized in that the adjustment mechanism (7) includes a threaded rod (18) that is rotatably connected to the inner top of the groove (5), and the The lower end of the threaded rod (18) is threadedly connected to the upper end of the extension plate (6), and the groove (5) is provided with a rotating rod (19), between the rotating rod (19) and the threaded rod (18) Through the transmission connection of the helical gear set (20), one end of the rotating rod (19) rotates through the vertical plate (4) and is fixedly connected with the second rotating handle (21) coaxially. 5. The test device for carrying capacity of a bridge single girder structure according to claim 4, characterized in that, the helical gear set (20) includes a first helical gear (22) and a second helical gear (23) meshing with each other ), the first helical gear (22) is coaxially fixedly connected to the rotating rod (19), and the second helical gear (23) is coaxially fixedly connected to the threaded rod (18). 6 . The test device for carrying capacity of a bridge single girder structure according to claim 1 , characterized in that, a scale value ( 24 ) is engraved on the outer side wall of the riser ( 4 ). 7. The test device for carrying capacity of a bridge single girder structure according to claim 1, characterized in that a T-shaped chute (25) is vertically provided on the side wall of the riser (4), and the T The slider (10) is slidably connected in the T-shaped chute (25), and the end of the slider (11) away from the fixed plate (12) extends into the T-shaped chute (25) and is fixedly connected with the slider (10). .