A test device capable of achieving approximately uniform surface loading

Abstract

The present application relates to the technical fields of structural mechanical performance test, and discloses a test device capable of realizing approximately uniform surface loading, which comprises a plane steel plate, a plurality of mounting holes are formed in the plane steel plate, an adjusting screw is fixed by an adjusting nut after penetrating through the plurality of mounting holes, an upper connecting block is fixedly connected to the bottom end of the adjusting screw, the upper end of a spring is connected to the upper connecting block, and the lower end of the spring is connected to a lower connecting block.The present application comprises a plane steel plate, stiffening ribs, a spring, a steel gasket and a screw rod.When the size of the steel plate is designed, the maximum plate width is determined according to the type of the plate to be loaded, and the triangular shape is one of the preferable specific embodiments, the different plane forms can be determined according to the plate characteristics, and the number and arrangement position of the bolt holes are determined reasonably.The bolt holes can be arranged and adjusted according to the actual plate width area of the loaded test piece during the test loading, and the adaptability is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of structural mechanical performance test, in particular to a test device capable of realizing approximate uniform surface loading. BACKGROUND

[0002] In the field of structural engineering research, a large number of projects need to be subjected to uniform load test, such as roof, wall surface, etc., especially when the wind resistance performance of the roof panel is obtained. The traditional method adopts sandbag loading, which is difficult to ensure the uniformity of the stacking, and it is difficult to directly read the size of the loading force, and at the same time, it occupies a larger area of the site, and it is difficult to meet the loading requirements when the required load is large. Moreover, the loading device and the loading method of the prior art are plane loading. Since the loading end is a plane, after the test piece deforms greatly, the contact force between the loading end and the surface of the test piece is no longer uniform, and it is difficult to ensure the accuracy of the test results. Moreover, the plane loading end cannot achieve uniform loading for the plate with a special curved surface.

[0003] To solve the above problems, a test device capable of realizing approximate uniform surface loading is provided. The steel plate, stiffening rib, spring, steel gasket and screw rod are connected together in the present application. The width of the plate with the largest loading area is designed, and a plurality of loading points are arranged. Through the arrangement and combination on the plane, different sizes and loading areas of the plate can be adapted. At the same time, the loading position can be adjusted in the vertical direction, which is suitable for the plate with a special curved surface. Further, the height of the screw rod and the spring can be adjusted according to the deformation amount of the test piece, thereby effectively improving the uniformity of the loading. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art by utilizing the flexible characteristics of the spring to provide a test device capable of realizing approximate uniform surface loading. The device comprises a plane steel plate, a stiffening rib, a spring, a steel gasket and a screw rod. When the size of the steel plate is designed, the maximum plate width of different types of plates to be loaded is determined. The triangular shape is one of the preferred embodiments, and different plane forms can be determined according to the characteristics of the plate, and the number and arrangement position of the bolt holes are determined reasonably. During the test loading, the bolt holes can be arranged and adjusted according to the actual plate width of the loaded test piece.

[0005] To achieve the above purpose, the present application provides the following technical scheme: 1. A test device capable of realizing approximate uniform surface loading, characterized in that it comprises a plane steel plate, a plurality of mounting holes are formed in the plane steel plate, an adjusting screw rod passes through the mounting holes and is fixed by an adjusting nut, an upper connecting block is fixedly connected to the bottom end of the adjusting screw rod, a spring is connected to the upper connecting block at the upper end and connected to a lower connecting block at the lower end.

[0006] Through the technical scheme, the device comprises a plane steel plate, stiffening ribs, springs, steel gaskets and screw rods, the size of the steel plate is designed according to different types of plates to be loaded, the maximum plate width is determined, the triangle is one of the preferable specific implementation modes, different plane forms can be determined according to the plate characteristics, the number and arrangement position of the bolt holes are reasonably determined, and the arrangement and adjustment of the bolt holes can be performed according to the actual plate width area of the loaded test piece during test loading.

[0007] Further, the upper surface of the plane steel plate is fixedly provided with a loading support block, the outer wall of the loading support block is fixedly connected with a plurality of stiffening ribs, the upper end surface of the loading support block is fixedly connected with a lifting sleeve, one side of the lifting sleeve is provided with a rocker, and the upper end of the lifting sleeve is provided with a top cover.

[0008] Further, the lower end surfaces of the stiffening ribs are fixedly connected with the plane steel plate.

[0009] Further, the gaskets are sleeved on the adjusting screw rods.

[0010] Further, the lower end surfaces of the lower connecting blocks are provided with rubber pads.

[0011] Further, the inner walls of the mounting holes are provided with threads.

[0012] Further, the upper end surfaces of the adjusting screw rods are fixedly connected with adjusting blocks.

[0013] Further, the lower end surfaces of the rubber pads are provided with anti-skid teeth.

[0014] Further, the plane steel plate is made of steel material.

[0015] Further, the springs are made of stainless steel material.

[0016] The present application has the following advantages:

[0017] 1. The test device provided by the present application can realize approximately uniform surface loading, and comprises a plane steel plate, stiffening ribs, springs, steel gaskets and screw rods.

[0018] 2. The test device capable of achieving approximately uniform surface loading, which is characterized in that the device is welded with steel stiffening ribs and a plane steel plate to strengthen the rigidity of the device and is suitable for loading of test pieces with large bearing capacity; a plurality of threaded holes are arranged on the plane steel plate; the spring is welded with spring connectors at both ends; the upper spring connector is welded with a screw rod; the screw rod can be fastened by an adjusting nut and the loading position of the spring can be adjusted.

[0019] 3. The test device capable of achieving approximately uniform surface loading, which is characterized in that the lower end of the spring is welded with the spring connector and the lower end of the connector is pasted with a rubber gasket to protect the loaded test piece plate; a lifting sleeve is arranged on the upper end of the stiffening rib and is connected with a rocker to accurately control the loading force and the loading range; the spring force is basically uniform to achieve approximately uniform surface loading by adjusting the height of the spring and fastening the nut. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a perspective view of the test device capable of achieving approximately uniform surface loading according to the present application;

[0021] Figure 2 FIG. 2 is a front view of the test device capable of achieving approximately uniform surface loading according to the present application;

[0022] Figure 3 FIG. 3 is a top view of the test device capable of achieving approximately uniform surface loading according to the present application;

[0023] Figure 4 FIG. 4 is a side view of the test device capable of achieving approximately uniform surface loading according to the present application.

[0024] LEGEND

[0025] 1. Plane steel plate; 2. Stiffening rib; 3. Mounting hole; 4. Thread; 5. Rocker; 6. Top cover; 7. Lifting sleeve; 8. Loading support block; 9. Adjusting block; 10. Adjusting screw rod; 11. Adjusting nut; 12. Gasket; 13. Upper connecting block; 14. Spring; 15. Lower connecting block; 16. Rubber pad; 17. Anti-skid teeth; 18. Anti-skid pattern. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] REFERENCE Figures 1-4The embodiment provided by the application discloses a test device capable of achieving approximately uniform surface loading, which comprises a plane steel plate 1, a loading support block 8 fixedly connected to the middle of the upper surface of the plane steel plate 1, four stiffening ribs 2 fixedly and uniformly spaced on the outer wall of the loading support block 8, a lifting sleeve 7 fixedly connected to the upper end surface of the loading support block 8, a rocker 5 arranged on one side of the lifting sleeve 7, a top cover 6 arranged on the upper end of the lifting sleeve 7, a plurality of mounting holes 3 uniformly and spaced apart arranged on the upper end surface of the plane steel plate 1, a plurality of gaskets 12 fixedly connected to the upper end surface of the mounting holes 3, a plurality of adjusting nuts 11 fixedly connected to the upper end surface of the gaskets 12, a plurality of adjusting screws 10 arranged in the mounting holes 3 and penetrating through the adjusting nuts 11 and the gaskets 12, a plurality of upper connecting blocks 13 fixedly connected to the lower end surface of the adjusting screws 10, a plurality of springs 14 fixedly connected to the interiors of the upper connecting blocks 13, a plurality of lower connecting blocks 15 fixedly connected to the lower end surface of the springs 14, and a plurality of rubber pads 16 arranged on the lower end surface of the lower connecting blocks 15. The device comprises the plane steel plate 1, the stiffening ribs 2, the springs 14, the steel gaskets 12 and the adjusting screws 10. When the size of the steel plate is designed, the maximum plate width is determined according to the different types of plates required to be loaded, the different plane forms are determined according to the plate characteristics, and the number and arrangement position of the bolt holes are determined reasonably. When the test is loaded, the bolt holes can be arranged and adjusted according to the actual plate width area of the loaded test piece.

[0028] The lower end surface of the four stiffening ribs 2 is fixedly connected with the plane steel plate 1, the strength of the device is strengthened through the four stiffening ribs 2, the inner wall of the mounting hole 3 is provided with a thread 4, the adjusting screw 10 is conveniently connected through the thread 4, the upper end surface of the adjusting screw 10 is fixedly connected with an adjusting block 9, the adjusting screw 10 is conveniently rotated through the adjusting block 9, the lower end surface of the rubber pad 16 is provided with an anti-skid tooth 17, the loaded test piece is not easy to slide through the anti-skid tooth 17, the plane steel plate 1 is made of steel material, the product made of steel material has high strength, the upper end surface of the top cover 6 is provided with an anti-skid pattern 18, the top cover 6 is not easy to slide when contacting with other objects through the anti-skid pattern 18, and the plurality of springs 14 are made of stainless steel material, the product made of stainless steel material has high strength.

[0029] Working principle: when the present application is used, different plane forms can be determined according to the plate characteristics, and reasonable mounting hole 3 position quantity and arrangement position are determined. When the test is loaded, the mounting hole 3 arrangement and adjustment can be carried out according to the actual plate width area of the loaded test piece. A plurality of mounting holes 3 are arranged on the plane steel plate 1. The spring 14 is connected with the upper connecting block 13 and the adjusting screw 10 through welding at both ends. The adjusting screw 10 can be fastened through the adjusting nut 11, and the loading position of the spring 14 can be adjusted. The lower end of the spring 14 is connected with the lower connecting block 15 through welding. The lower end of the lower connecting block 15 is pasted with a rubber pad 16 piece, which can protect the loaded test piece plate. The lifting sleeve 7 is arranged on the upper end of the stiffening rib 2 and connected with the rocker 5, which can accurately control the loading force and control the loading range. The spring 14 height can be adjusted and fastened through the adjusting nut 11, so that the stress of the spring 14 is basically consistent, and the loading of the approximate uniform surface load is achieved.

[0030] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. An adjustable test loading device capable of achieving approximately uniformly distributed surface loads, characterized in that: The system includes a flat steel plate (1), on which multiple mounting holes (3) are provided. Multiple adjusting screws (10) pass through the multiple mounting holes (3) and are fixed by adjusting nuts (11). Multiple upper connecting blocks (13) are fixedly connected to the bottom end of the adjusting screws (10). Multiple springs (14) are connected at their upper ends to the upper connecting blocks (13) and at their lower ends to the lower connecting blocks (15). Each lower connecting block (15) has a rubber pad (16) on its lower end face. A loading support block (8) is fixedly installed in the middle of the upper surface of the flat steel plate (1). Several stiffening ribs (2) are fixedly connected at intervals on the outer wall of the loading support block (8). A lifting sleeve (7) is fixedly connected to the upper end face of the loading support block (8). A rocker arm (5) is provided on one side of the lifting sleeve (7). A top cover (6) is provided at the upper end of the lifting sleeve (7). During the test loading, the arrangement and adjustment of the mounting holes (3) are based on the actual area of ​​the plate of the specimen being loaded; The inner walls of the multiple mounting holes (3) are provided with threads (4); the upper end faces of the multiple adjusting screws (10) are fixedly connected with adjusting blocks (9), and the adjusting screws (10) can be rotated conveniently through the adjusting blocks (9).

2. The adjustable test loading device for achieving approximately uniformly distributed surface loads according to claim 1, characterized in that: The lower end face of each stiffening rib (2) is fixedly connected to the flat steel plate (1).

3. The adjustable test loading device for achieving approximately uniformly distributed surface loads according to claim 1, characterized in that: It also includes gaskets (12), a plurality of which are fitted onto the adjusting screw (10).

4. The adjustable test loading device for achieving approximately uniformly distributed surface loads according to claim 1, characterized in that: The lower end face of each of the rubber pads (16) is provided with anti-slip teeth (17).

5. The adjustable test loading device for achieving approximately uniformly distributed surface loads according to claim 1, characterized in that: The flat steel plate (1) is made of steel.

6. The adjustable test loading device for achieving approximately uniformly distributed surface loads according to claim 1, characterized in that: All springs (14) are made of stainless steel.

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