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Fastener longitudinal resistance test device

A technology for testing devices and fasteners, applied to measuring devices, force/torque/work measuring instruments, instruments, etc., to achieve easy maintenance, simple structure, and good versatility

Active Publication Date: 2019-08-27
BEIJING ZKYT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a set of longitudinal resistance testing equipment is purchased, it will bring a certain economic burden to the enterprise.

Method used

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  • Fastener longitudinal resistance test device
  • Fastener longitudinal resistance test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The hole center distance of the fastener seat 4 is 220mm, the hole diameter is 27mm, and the connection line between the hole centers is centered and horizontal, which can be used to install WJ-2 small resistance fasteners; the indenter 1 is the indenter of the conventional universal testing machine in the laboratory.

Embodiment 2

[0061] Fastener seat 4 hole center distance is 2300mm, hole diameter is 27mm, hole center line is centered and horizontal, and can be used to install WJ-8, WJ-7 type fasteners; pressure head 1 is driven by hydraulic pressure, and a pressure sensor is installed, and rail 3 is at one end Install the displacement sensor;

Embodiment 3

[0063] Fastener seat 4 has a horizontal hole center distance of 293mm, a vertical hole center distance of 127mm, and a hole diameter of 33mm, which can be used to install P6 and P7 heavy-duty line fasteners; the pressure head 1 is driven by a frequency conversion motor and installed with a pressure sensor, and the rail 3 A displacement sensor is installed at one end;

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Abstract

The invention discloses a fastener longitudinal resistance measuring device. The fastener longitudinal resistance measuring device includes a fastener seat 4, a turning table 5, a rack 7, a first air cylinder 6, a second air cylinder 8 and wheels 9; the second air cylinder 8 makes the turning table 5 stand upright, and a steel rail 3 and a fastener are mounted on the fastener seat 4; the first air cylinder 6 pushes the fastener seat 4 out to a test platform 2; a pressing head 1 provided with a displacement and force sensor applies a force onto the steel rail 3; and the longitudinal resistance of the fastener is tested according to procedures. The fastener longitudinal resistance measuring device of the invention is applicable to a plurality of kinds of fasteners and has high universality; a universal electronic testing machine in a laboratory can be adopted as the pressing head 1 provided with the displacement and force sensor, and therefore, part purchase cost can be reduced, and the multi-purpose performance of the fastener longitudinal resistance measuring device can be achieved; pneumatic control is adopted, so that labor force consumption can be decreased; the extending and stretching speed of the air cylinders can be controlled through adjusting air inflow, and therefore, injuries to operators can be avoided; and the fastener longitudinal resistance measuring device is convenient to move, and the fastener longitudinal resistance measuring device can be moved away with easiness when the fastener longitudinal resistance measuring device is not used. The fastener longitudinal resistance measuring device has the advantages of compactness, lightweight, structural simplicity and easiness in maintenance.

Description

technical field [0001] The invention relates to a fastener longitudinal resistance testing device, in particular to a testing device for testing the fastener longitudinal resistance in the rail transit field. Background technique [0002] In the field of rail transit, different routes and road sections have different requirements for the longitudinal resistance of fasteners. For example, the longitudinal resistance of fasteners for heavy-duty lines is required to be no less than 11kN, and that for conventional lines is no less than 9kN. For overhead lines, small-resistance fasteners are required, and the longitudinal resistance requirement is no greater than 4kN. The two factors that determine the size of the longitudinal resistance are: the buckle pressure of the spring bar and the vibration-absorbing backing plate. Although the buckle pressure of the elastic strips has been adjusted moderately in different routes, the longitudinal resistance of the pads with different mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00
Inventor 罗兵
Owner BEIJING ZKYT TECH CO LTD
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