Paper bridge bearing test device

Abstract

The utility model discloses a paper bridge load-bearing testing device which is composed of a left testing seat and a right testing seat, each testing seat comprises a testing table and a bottom plate, the testing table is fixed at one end of the bottom plate, an inner long hinge is installed on the surface of the other end of the bottom plate, and the left testing seat and the right testing seat are hinged through the two inner long hinges and a hinge shaft. And an outer long hinge which can be matched with the inner long hinge is mounted at the top of the outer side surface of the test board. The folding table is flexible to disassemble and assemble, occupies a small area in a storage state, and is convenient to carry, take and place in daily life.

Description

Technical Field

[0001] The utility model relates to a teaching demonstration tool, in particular to a paper bridge load-bearing test device. Background Art

[0002] The paper bridge experiment is a common mechanical experiment. Students use paper to make paper bridges of different structural forms. They can observe the damage of the paper bridges in the process of bearing loads and measure their maximum load-bearing weight. Patent CN201166938Y discloses a paper bridge demonstrator, which is mainly composed of a rectangular base with a groove in the middle and steps and steps with relative positions and equal heights formed in the groove. The paper bridge can be placed in the groove to conduct the experiment, but the demonstrator has the problems of large size, heavy weight, and inconvenient transportation and placement during daily use. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a paper bridge load-bearing test device, which is flexible to assemble and disassemble, occupies little space in the stored state, and is convenient for daily transportation and placement.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A paper bridge load-bearing test device consists of two left and right test seats; the test seat includes a test table and a base plate, the test table is fixed to one end of the base plate, an inner long hinge is installed on the surface of the other end of the base plate, and the left and right test seats are hinged by two inner long hinges and a hinge axis; an outer long hinge that can cooperate with the inner long hinge is installed on the top of the outer side surface of the test table.

[0006] Furthermore, the test bench is a hollow structure, and an opening is provided on its outer end surface.

[0007] Furthermore, the testing device also includes a load-carrying trolley, which is composed of a frame, a driving motor, a crawler walking mechanism, and a control module.

[0008] Compared with the prior art, the advantages and effects of the utility model are: the device is assembled by a detachable connection method, which is easy to assemble and disassemble when in use, and can be stacked up to save space when not in use. Its built-in storage space can not only store test supplies, but also reduce the weight of the device itself, making it convenient for daily carrying and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The structure of the utility model is shown in FIG. Figure 1 (Usage status).

[0010] Figure 2 The structure of the utility model is shown in FIG. Figure 2 (Stored state).

[0011] Figure 3 It is a working schematic diagram of the utility model.

[0012] Figure number identification: 1. Test bench; 2. Bottom plate; 31. Inner long hinge; 32. Outer long hinge; 4. Hinge axis; 5. Opening; 6. Paper bridge to be tested; 7. Load-carrying trolley. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0014] A paper bridge load-bearing test device described in this embodiment is as follows: Figure 1 As shown, it consists of two left and right test seats, each of which is composed of a test bench 1 and a base plate 2. The test bench 1 is fixed to one end of the base plate 2, and an inner long hinge 31 is installed on the surface of the other end of the base plate 2. The left and right test seats are hinged by two inner long hinges 31 and a hinge shaft 4. At the same time, the top of the outer side surfaces of the two test benches 1 are installed with outer long hinges 32 that can cooperate with the inner long hinges 31.

[0015] like Figure 2 As shown, the test bench 1 is a hollow structure that can form a storage space, and an opening 5 is provided at the lower portion of the outer side surface thereof, into which a load-carrying trolley 7 used for testing can be placed.

[0016] The load-carrying trolley 7 is composed of a frame, a driving motor, a crawler walking mechanism, and a control device. The driving motor is used to drive the crawler walking mechanism to operate. The frame is installed on the crawler walking mechanism to place heavy objects. The control device includes a power module, a control module and a wireless transmission module. The control device can be used to remotely control the load-carrying trolley 7 to walk on the paper bridge to be tested.

[0017] The working principle of this embodiment is as follows:

[0018] 1. Before testing, press the two test sockets Figure 1 As shown (in use), the two test seats are placed opposite to each other, and the two test seats are hinged and fixed by the inner long hinge 31 and the hinge axis 4;

[0019] 2. Place the paper bridge 6 to be tested between two test benches 1, and place the load-carrying trolley 7 on the test bench 1. Figure 3 As shown, during the test, the load-carrying trolley 7 starts from the test bench 1 on one side, passes through the paper bridge 6 to be tested, and then arrives at the test bench 1 on the other side. By continuously increasing the load of the load-carrying trolley 7, the maximum load-bearing capacity of the paper bridge 6 to be tested can be tested, and at the same time, the damage of the paper bridge 6 to be tested under dynamic pressure can also be observed;

[0020] 3. After the test is completed, first pull out the hinge shaft 4 connecting the two inner long hinges 31 to separate the two test seats, then rotate the right test seat 180° up and down and stack it on the left test seat. Figure 2 As shown in the storage state, the inner hinges 31 on the bottom plates 2 on both sides just match the outer hinges 32 on the outer sides of the test bench 1 on both sides, and finally two hinge shafts 4 are inserted between the left and right sets of inner hinges 31 and outer hinges 32 to fix the two test seats. The load-carrying trolley 7 can be put into the storage space in the test bench 1 through the opening 5 for easy carrying.

Claims

1. A paper bridge load-bearing test device, characterized in that: The invention is composed of two left and right test seats; the test seats include a test table (1) and a bottom plate (2); the test table (1) is fixed to one end of the bottom plate (2); an inner long hinge (31) is installed on the surface of the other end of the bottom plate (2); the left and right test seats are hinged via two inner long hinges (31) and a hinge shaft (4); an outer long hinge (32) which can cooperate with the inner long hinge (31) is installed on the top of the outer side surface of the test table (1).

2. A paper bridge load-bearing test device according to claim 1, characterized in that: The test bench (1) is a hollow structure, and an opening (5) is provided on its outer end surface.

3. A paper bridge load-bearing test device according to claim 1, characterized in that: It also comprises a load-carrying trolley (7), which is composed of a frame, a driving motor, a crawler walking mechanism, and a control device.

Images