压杆稳定性教学实验台

Abstract

压杆稳定性教学实验台，涉及供教学用的模拟机技术领域，包括：实验台框架，包括底盘、垂直于底盘上的垂直立柱和设置于垂直立柱上方的顶板；第一测试组件，安装于实验台框架上，用于测量第一压杆的压杆稳定性，包括：加压装置，固定于设置于顶板上；上枢接件，加压装置部分穿过顶板与上枢接件固定连接；下枢接件，设置于底盘上方；上枢接件和下枢接件均设有松紧调节结构，通过旋紧或旋松实现第一压杆端部的刚性固定或铰接状态转换；第一传感器，设于底盘与下枢接件之间，用于检测压力数据；数据采集模块，与第一传感器电连接，本实用新型通过松紧调节结构集成边界条件转换功能，消除冗余组件，实现结构轻量化、操作简便化。

Claims

1. A teaching experimental platform for the stability of a compression bar, characterized in that, include: The experimental platform frame (1) includes a base (11), a vertical column (12) perpendicular to the base (11), and a top plate (13) disposed above the vertical column (12). The first test component, installed on the experimental frame (1), is used to measure the stability of the first pressure rod, and includes: a pressurizing device (21), fixed on the top plate (13); an upper pivot connector (22), the pressurizing device (21) partially passing through the top plate (13) and fixedly connected to the upper pivot connector (22); a lower pivot connector (23), located above the chassis (11); both the upper pivot connector (22) and the lower pivot connector (23) are provided with a tension adjustment structure (24), which can realize the rigid fixation or hinged state conversion of the end of the first pressure rod by tightening or loosening; and a first sensor (25), located between the chassis (11) and the lower pivot connector (23), used to detect pressure data. The data acquisition module (4) is electrically connected to the first sensor (25); The upper pivot (22) or the lower pivot (23) is provided with a connecting part (223), and the four corners of the connecting part (223) are provided with connecting through holes. The upper pivot (22) is detachably connected to the pressure device (21) by bolts passing through the connecting through holes; the lower pivot (23) is detachably connected to the chassis (11) by bolts passing through the connecting through holes.

2. The pressler stability teaching lab of claim 1, wherein, It also includes a second test component, which is installed on the experimental frame (1) and is used to measure the stability of the second pressure rod. The component includes: a lower end fixing part (31) for clamping the lower end of the second pressure rod; a support plate (32) disposed on the second pressure rod, and a counterweight receiving area is provided between the upper end surface of the support plate (32) and the top end of the second pressure rod, the counterweight receiving area being used to receive the counterweight plate (33); a second sensor (34) disposed between the lower end fixing part (31) and the chassis (11); the second sensor (34) is electrically connected to the data acquisition module (4).

3. The pressler stability teaching lab of claim 1, wherein, The tension adjustment structure (24) includes a threaded rotating assembly (241) and a clamping member (242). When the threaded rotating assembly (241) is tightened, it pushes the clamping member (242) to press the first pressure rod to form a rigid fixation. When the threaded rotating assembly (241) is loosened, it releases the first pressure rod to form a hinged state.

4. The pressler stability teaching laboratory table of claim 2, wherein, The lower fixing part (31) includes a receiving box (311) and a plurality of fastening screws (312); each end face of the receiving box (311) is provided with a threaded hole, and each threaded hole is adapted to the thread of the fastening screw (312); each of the fastening screws (312) passes through the corresponding threaded hole and abuts against the lower end of the pressure rod in the receiving box (311) to form a rigid fixation.

5. The experimental table for teaching the stability of a pressure bar according to claim 2 or 4, characterized in that, The vertical column (12) is provided with an anti-deviation frame (121), and the anti-deviation frame (121) has an anti-deviation hole (1211). The anti-deviation hole (1211) is perpendicular to the axis of the second pressure rod, and the second pressure rod passes through the anti-deviation hole (1211).

6. The pressler stability teaching laboratory table of claim 2, wherein, The counterweight plate (33) is a concentric ring structure. The diameter of the central hole of the counterweight plate (33) is smaller than the outer diameter of the support plate (32), and the side of the counterweight plate (33) is marked with mass scale.

7. The pressler stability teaching laboratory table of claim 2, wherein, The first pressure bar and the second pressure bar are equipped with strain data measurement modules (6), and the strain data measurement modules (6) are electrically connected to the data acquisition modules (4).

8. The pressler stability teaching lab of claim 1, wherein, The pressurizing device (21) further includes a drive shaft (211) and a pressurizing base (212). The cross-sectional area of ​​the pressurizing base (212) is larger than that of the drive shaft (211). The upper end of the pressurizing base (212) is fixedly connected to the lower end of the drive shaft (211). The pressurizing base (212) is fixedly connected to the upper pivot member (22) by bolts.

9. The pressler stability teaching lab of claim 1, wherein, It also includes an information display module (5), which is detachably mounted on the chassis (11) and connected to the data acquisition module (4) via a wireless communication module.

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