2results about How to "Good abrasiveness" patented technology

The present invention relates to a tire tread for heavy, mixed-use vehicles and aims to improve the durability of the crown of the tire after stones get stuck in the tread. The tread (1) comprises a recess (3) comprising a radially outer first recessed sipe portion (31) having a width W11 on the tread surface (2), a width W12 at the sipe bottom (311) and a depth H1, and a radially inner second recessed gullet portion (32) having a width W2 and a depth H2 and leading to the sipe bottom (311) at a distance E relative to the average surface (S1) of the sipe (31). According to the invention, the distance E is at least equal to the width W12 of the sipe bottom (311) divided by 6.

According to the transformer test wiring auxiliary device provided by the invention, the wiring module leads down a main transformer bushing, an end screen and other leads, the wire changing module realizes rapid switching of different wiring modes, the base module provides physical support for the device and is compatible with a test instrument interface, and the monitoring module monitors the residual charge quantity of the device in real time to guarantee the overall safety performance. The wiring time in the transformer test process is effectively shortened, and the test efficiency is improved; the device comprises a wiring module, a base module, a wire changing module and a monitoring module, the wiring module comprises a wire clamp and an insulated wire, and the wire clamp is electrically connected with the insulated wire; the base module comprises an interface and a shell, and the interface extends to the outer side of the shell; the wire changing module comprises a sleeve and a guide rod, the guide rod is sleeved with the sleeve, the guide rod is connected with an insulated wire, and the sleeve is arranged above the shell; the monitoring module comprises a monitoring device, a display device and a power supply device. The power supply device is electrically connected with the monitoring device and the display device.