Bridge expansion joint assembly tolerance testing machine

The bridge expansion joint assembly tolerance testing machine is developed and manufactured according to the testing requirements of JT/T327-2016 "General Technical Conditions for Highway Bridge Expansion Joint Devices". It is mainly used for assembly tolerance and waterproof performance testing in the field of bridge expansion devices. It can perform compression, tension and other functions of the bridge expansion device, simulate the actual stress state of the expansion device in highway bridges, and can be used for assembly tolerance and waterproof performance testing of single joint modular, double joint and above multi joint modular, comb plate expansion devices and other specimens.. The equipment usually has four independent or synchronously controllable detection/clamping stations, which can simultaneously detect four sets of expansion joint specimens or perform multi-point measurements on four positions of the same specimen to improve detection efficiency and data consistency.

Meet the standard

JT/T327-2016 6.1.3.5.2 Assembly Tolerance Requirements - Compression Performance Testing

JT/T327-2016 General Technical Conditions for Highway Bridge Expansion Devices Appendix C Waterproof Performance Test Method

CJ/T497-2016 Appendix C Test Method for Waterproof Performance of Finished Expansion Devices

Main purpose

Detect assembly tolerances such as seam width deviation, height difference between adjacent components, flatness, longitudinal/transverse clearance, and misalignment after expansion joint assembly;

Measure the dimensional parameters such as the spacing between the supporting beams of the modular expansion joint, the clearance between the teeth of the comb plate, and the position of the anchor;

Simulate temperature changes or design expansion and contraction, perform reciprocating expansion and contraction actions, detect expansion and contraction synchronization, jamming, and abnormal noise;

Automatically determine whether it is qualified or not, generate inspection records and reports.

Main functions and features

Four station independent control or synchronous linkage, capable of switching between single and multiple stations;

Automatic clamping and positioning to reduce human measurement errors;

Multi parameter synchronous acquisition: seam width, height difference, gap, displacement, synchronization deviation, etc;

Run back and forth according to the set expansion stroke and speed, and record the displacement time/force displacement curve;

Overlimit alarm, overload protection, fracture/stuck shutdown;

The software supports standard tolerance determination, data storage, printing, and traceability.