Bridge bearing traction type testing device

Abstract

The invention relates to a traction testing device, in particular to a bridge bearing traction type testing device used for a student experiment, comprising a bearing trolley, a hook and a steel rope. The bridge bearing traction type testing device is characterized in that the hook on the trolley is connected with a traction device through the steel rope. The traction device comprises a reel base, a rocking handle, a hook, a rope wheel and a shaft, wherein the shaft is provided with the rocking handle, and the reel base is connected with the rope wheel through the shaft on the rocking handle. The traction device is arranged at the front end and the back end of the bearing trolley. A support of the reel base is an expansion bracket. The bearing trolley is hauled through the steel rope through a manual rocking handle in a labor saving way, thereby the bearing pressure when the bearing trolley passes a bridge can be tested. If the weight of a bearing ingot slice to be tested on the trolley exceeds the bearing capacity of the bridge, the handle can be shaken at once by the other end of the bearing trolley to pull back the trolley when the bridge has deformation or rupture, thereby the safety hidden danger caused by falling of the trolley is avoided. Bridges with different heights can be tested by adopting the expansion bracket, and the creative ability of a student is cultured through a test activity.

Description

technical field [0001] The invention relates to a traction test device, in particular to a bridge load-bearing traction test device for students' experiments. Background technique [0002] In order to cultivate students' hands-on practical ability and enrich students' second classroom, when measuring the load-bearing capacity of bridges, students generally use manual traction of load-bearing trolleys, and test the pressure of the load-bearing trolley passing through the bridge by continuously increasing the weight of the load-bearing steel ingots on the load-bearing trolley. The general existing technology is to observe the deformation of the bridge by manual traction. In addition, when the steel cable breaks away from the traction trolley, the trolley cannot be pulled back in time, and there are potential safety hazards for students during activities. Contents of the invention [0003] In order to overcome the defects in the prior art, the present invention provides a tim...

AI Technical Summary

Problems solved by technology

[0002] In order to cultivate students' hands-on practical ability and enrich students' second classroom, when measuring the load-bearing capacity of bridges, students generally use manual traction of load-bearing trolleys, and test the pressure of the load-bearing trolley passing through the bridge by continuously increasing the weight of the load-bearing steel ingots on the load-bearing trolley. Generally, the existing technology is to observe the deformation of the bridge by manual traction. In addition, when the steel cable is detached from the traction trolley, the trolley cannot be pulled back in time, and there are potential safety hazards for students during activities.

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