Citic Dicastal Co., Ltd

Hanbao Sun

Zhihua Zhu

Zhigao Yin

Jinqi Lyu

Jinqi Lv

Zhipeng Li

Chunhai Liu

Yingfeng Wang

Zhuxing Wang

Hongfu Jin

Yingwei Zhu

Zuo Xu

Changhai Li

Guoyuan Xiong

Yongning Wang

Debin Tang

Jingying Liu

Ling Jiang

Yanfu Xu

A first harmonic runout simulation hub includes a measuring disc and a clamping portion detachably fixed together, in which the clamping portion is fixed in the middle of the measuring disc; the clamping portion includes a first positioning hole for positioning and clamping, the first positioning hole is a cylindrical hole, and the cylindricity of the first positioning hole is smaller than a preset value; the outer circumference of the measuring disc includes a measuring cylindrical surface having a preset axial length and a bus parallel to an axis of the first positioning hole, the radial distance between the axis of the measuring cylindrical surface and the axis of the first positioning hole is greater than a preset value, and circular runout test values on the measuring cylindrical surface are preset first harmonic runout values.

First harmonic runout simulation hub

A simulation hub includes an end plate, a clamping portion and a measuring disc, in which the clamping portion and the measuring disc are both detachably fixed to the end plate; the clamping portion includes a first positioning hole for positioning and clamping, the first positioning hole is a cylindrical hole, and the cylindricity of the first positioning hole is smaller than a preset value; the outer circumference of the measuring disc includes at least a measuring cylindrical surface having a preset axial length and a bus parallel to an axis of the first positioning hole, and circular runout test values of the measuring cylindrical surface are preset first or second harmonic runout values; and the outer diameter of the measuring cylindrical surface is adapted to the inner diameter of the first positioning hole.

Simulation hub and verification method

A device for detecting the leak rate of a leak is employed to realize a detection method for detecting the leak rate of a leak. The device includes a gas storage tank for storing a detection medium, a connecting piece, a detection valve arranged on the connecting piece, a sealed container and a balance for measuring the weight of the sealed container. The device can detect the leak rates of leaks within the range of 1&#xd7;10&#x2dc;1&#xd7;10Pa&#xb7;m/s.

Device and method for detecting leak rate of leak

The invention provides an automatic constant pressure device for a hub tire system. The device comprises a valve nozzle, air pipes, valves, a pneumatic slip ring, a hub, a pressure relief valve, a tire, a main shaft, an air storage tank, a vehicle-mounted air source and the like. Two valve holes are machined in the hub of the device. The valve nozzle with a tire pressure sensor is installed at one valve hole, and the pressure relief valve is installed at the other valve hole. The tire pressure is detected by the tire pressure sensor. The valve is controlled to inflate through the valve nozzle, and the pressure relief valve is controlled to relieve the pressure. The device has the characteristics of scientific detection principle, simple and reasonable structure and the like.

Automatic constant pressure device for hub tire system

A sample gauge length and length after fracture measuring device includes a worktable, a first sliding table support and a second sliding table support, a control and length display, a spiral micrometer head, a scriber, a sample, etc. The reading device using the spiral micrometer head to directly measure the gauge length and the length after fracture has a detection accuracy of &#xb1;0.01 mm, which is superior to the requirement of &#xb1;0.05 mm in GB/T228 Metallic Materials Tensile Testing at Ambient Temperature.

Sample gauge length and length after fracture measuring device

The invention provides an aluminum alloy hub positioning fixture. The aluminum alloy hub positioning fixture adopts an upper trapezoidal metal taper sleeve and a lower trapezoidal metal taper sleeve, the lower trapezoidal metal taper sleeve is in contact with the central hole of a hub, and the upper trapezoidal metal taper sleeve is in contact with the cap section of the hub; the lower trapezoidal metal taper sleeve is mounted on a hollow shaft, and a metal pipe is arranged in the middle of the hollow shaft. During working, the hub is positioned and mounted on the lower trapezoidal metal taper sleeve via the central hole, the upper trapezoidal metal taper sleeve is in vertical contact with the cap section of the hub under the action of a cylinder.

Aluminum alloy hub positioning fixture

The present invention provides a device for measuring air tightness of an aluminum alloy hub or a tire and a method for measuring the air tightness of the aluminum alloy hub or the tire by using the device. The device includes a pressure measurement device mounted into a hub or tire to be measured, an inflation device in gas connection with an inside of a tire of a wheel to be measured, and a data acquiring and processing device; wherein the inflation device includes a flow measurement component.

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Qinhuangdao, China

Hanbao Sun