Testing device for civil engineering structure safety

Abstract

The utility model relates to the technical field of anti-seismic test devices, and specifically discloses a civil engineering structure safety test device comprising a pedestal, the top of the pedestal is provided with a support bench through a plurality of columns, and the support bench is provided with a test bench in a sliding manner along the horizontal direction; a rotating shaft is rotatably mounted on one side, in the sliding direction of the supporting table, of the base in the longitudinal direction, a rotating disc is coaxially connected to the rotating shaft, a sliding block is slidably mounted in the rotating disc in the radial direction of the rotating disc, and a first connecting rod is hinged between the sliding block and the testing table; and a power mechanism for driving the rotating shaft to rotate and an adjusting mechanism for adjusting the distance between the sliding block and the center of the turntable are arranged on the supporting table. The shaking amplitude of the test bed can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of earthquake-resistant test devices, in particular to a test device for the safety of civil engineering structures. Background Art

[0002] For large-scale civil engineering projects such as houses and bridges, after the design drawings are completed, models need to be made to verify the reliability. Only after the verification is qualified can the construction be carried out according to the drawings. Earthquakes include transverse waves and longitudinal waves, among which transverse waves are the most harmful to buildings. Therefore, most earthquake test benches are mainly used to simulate lateral vibrations. Simulating lateral vibrations means that the table of the earthquake test bench is reciprocated in the horizontal direction. The existing earthquake test benches have a fixed reciprocating stroke of the table, and different amplitudes are simulated by changing the reciprocating rate of the table. However, in actual earthquakes, the shaking amplitude of the building is often relatively large, so a test device that can change the shaking amplitude is provided. Utility Model Content

[0003] In order to solve the problems mentioned in the background technology, the purpose of the utility model is to provide a test device for the safety of civil engineering structures.

[0004] In order to achieve the above objectives, the technical solution of the utility model is:

[0005] A test device for the safety of civil engineering structures, comprising a base, a support platform installed on the top of the base via a plurality of columns, a test bench slidably installed on the support platform in a horizontal direction, a rotating shaft rotatably installed on the base on one side of the sliding direction of the support platform in a longitudinal direction, a turntable coaxially connected to the rotating shaft, a slider slidably installed in the turntable in its radial direction, a first connecting rod hinged between the slider and the test bench, and a power mechanism for driving the rotating shaft to rotate and an adjustment mechanism for adjusting the distance between the slider and the center of the turntable are provided on the support platform.

[0006] Furthermore, the base includes a bottom plate and a table top, the table top is installed on the top of the bottom plate through a plurality of legs, the support platform is installed on the table top through a plurality of columns, the rotating shaft is rotatably installed in the table top, the power mechanism is a motor, the motor is installed on the bottom plate to drive the rotating shaft to rotate, and the adjustment mechanism is installed on the table top.

[0007] Furthermore, the adjusting mechanism includes a cylinder, a lifting arm, a rotating drum and a second connecting rod. The cylinder is longitudinally installed on the table. The lifting arm is fixedly connected to the piston rod of the cylinder. The rotating drum is coaxially sleeved on the outside of the rotating shaft and rotatably installed in the lifting arm. The rotating shaft passes through the lifting arm. The second connecting rod is hinged between the outer wall of the rotating drum and the bottom of the slider.

[0008] The beneficial effect of the utility model is that when in use, the test model is installed on the test bench, and the shaking amplitude of the test bench can be changed by changing the position of the slider on the turntable. The farther the slider is from the center of the turntable, the greater the shaking amplitude of the test bench, and the closer the slider is to the center of the turntable, the smaller the shaking amplitude of the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is an axonometric diagram of an embodiment of the utility model;

[0010] Figure 2 It is a cross-sectional view of an embodiment of the utility model.

[0011] Explanation of the accompanying drawing numbers: 1. Base plate, 11. Table top, 12. Support leg, 2. Support table, 21. Column, 3. Test bench, 4. Rotating shaft, 41. Turntable, 42. Slide slot, 5. Slider, 6. First connecting rod, 7. Motor, 8. Cylinder, 9. Lifting arm, 10. Rotating drum, 110. Second connecting rod. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the utility model.

[0013] like Figure 1-Figure 2 As shown, a test device for the safety of civil engineering structures includes a base, the base includes a bottom plate 1 and a table 11, the table 11 is installed on the top of the bottom plate 1 through four legs 12, a support platform 2 is installed on the top of the table 11 through four columns 21, a test bench 3 is installed on the support platform 2 through a guide rail to slide along the left and right directions, the test bench 3 is horizontally arranged, a rotating shaft 4 is installed on the right side of the table 11 to rotate longitudinally, a turntable 41 is coaxially connected to the rotating shaft 4, a slide groove 42 extending along its own radial direction is provided in the turntable 41, a slider 5 is slidably installed in the slide groove 42, and the slider 5 is hinged to the right end of the test bench 3. A first connecting rod 6 is connected, a motor 7 for driving the rotating shaft 4 to rotate is installed on the base plate 1, and an adjusting mechanism for adjusting the distance between the slider 5 and the center of the turntable 41 is installed on the table 11. Preferably, the adjusting mechanism includes two cylinders 8, a lifting arm 9, a rotating drum 10 and a second connecting rod 110. The two cylinders 8 are longitudinally installed on the right side of the table 11, and the lifting arm 9 is commonly fixed to the piston rods of the two cylinders 8. The rotating drum 10 is coaxially sleeved on the outside of the rotating shaft 4 and the rotating drum 10 is rotatably installed in the lifting arm 9. The rotating shaft 4 passes through the lifting arm 9, and a second connecting rod 110 is hinged between the outer wall of the rotating drum 10 and the bottom of the slider 5.

[0014] In actual use, the test model is installed on the test bench 3. By changing the position of the slider 5 on the turntable 41, the shaking amplitude of the test bench 3 can be changed. The farther the slider 5 is from the center of the turntable 41, the greater the shaking amplitude of the test bench 3. The closer the slider 5 is to the center of the turntable 41, the smaller the shaking amplitude of the test bench 3.

[0015] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test device for the safety of civil engineering structures, comprising a base, a support platform (2) is installed on the top of the base through a plurality of columns (21), a test platform (3) is installed on the support platform (2) in a horizontally slidable manner, characterized in that: A rotating shaft (4) is mounted on the base on one side of the sliding direction of the support platform (2) so as to rotate longitudinally, a rotating disk (41) is coaxially connected to the rotating shaft (4), a sliding block (5) is mounted in the rotating disk (41) so as to slide radially thereof, a first connecting rod (6) is hingedly connected between the sliding block (5) and the test platform (3), and a power mechanism for driving the rotating shaft (4) to rotate and an adjusting mechanism for adjusting the distance between the sliding block (5) and the center of the rotating disk (41) are provided on the support platform (2).

2. A test device for civil engineering structure safety according to claim 1, characterized in that: The base comprises a bottom plate (1) and a table plate (11); the table plate (11) is mounted on the top of the bottom plate (1) via a plurality of legs (12); the support platform (2) is mounted on the table plate (11) via a plurality of columns (21); the rotating shaft (4) is rotatably mounted in the table plate (11); the power mechanism is a motor (7); the motor (7) is mounted on the bottom plate (1) and is used to drive the rotating shaft (4) to rotate; and the adjustment mechanism is mounted on the table plate (11).

3. A test device for civil engineering structure safety according to claim 2, characterized in that: The adjusting mechanism comprises a cylinder (8), a lifting arm (9), a rotating drum (10) and a second connecting rod (110); the cylinder (8) is longitudinally mounted on a platform (11); the lifting arm (9) is fixedly connected to the piston rod of the cylinder (8); the rotating drum (10) is coaxially sleeved on the outside of the rotating shaft (4) and is rotatably mounted in the lifting arm (9); the rotating shaft (4) passes through the lifting arm (9); and the second connecting rod (110) is hinged between the outer wall of the rotating drum (10) and the bottom of the slider (5).

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