Unlock instant, AI-driven research and patent intelligence for your innovation.
Rail Bottom Bending Moment Sensor
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of force sensor and bending moment, which is applied in the field of precise measurement devices for wheel-rail force, can solve problems such as low precision, poor sensitivity, and complicated installation, and achieve the effects of improved measurement accuracy, large rated range, and simple installation process
Active Publication Date: 2020-01-21
天津哈威克科技有限公司
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0009] The purpose of the present invention is to solve the problems of low precision, complicated installation and poor sensitivity when the existing shear force sensor measures the wheel-rail force, and proposes a rail bottom bending moment force sensor
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment approach 1
[0027] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment, the rail bottom bending moment type force sensor described in this embodiment includes an elastic strain beam 1, a loading bolt 2, a locknut 3 and a strain gauge; the rail bottom bending moment type force sensor is passed through two fixing fixtures The bottom of the rail 10 fixed at the center between two adjacent sleepers;
[0028] The central position of the bottom surface of the elastic strain beam 1 is provided with a loading threaded through hole 4, and the loading bolt 2 passes through the loading threaded through hole 4 and is threadedly connected with the elastic strain beam 1; the anti-loosening nut 3 is connected with the loading bolt 2 through threads;
[0029] A strain hole 5 is opened on the side wall of the elastic strain beam 1, and the strain gauge is embedded in the strain hole 5;
[0030] The two fixing fixtures are respectively fixed at both ends of the elas...
specific Embodiment approach 2
[0032] Embodiment 2: This embodiment is to further limit the rail bottom bending moment force sensor described in Embodiment 1. In this embodiment, the locknut 3 is located under the elastic strain beam 1 and is connected to the elastic strain beam 1 through threads. Loading bolts 2 are attached.
[0033] In this embodiment, the relative position of the loading bolt 2 and the elastic strain beam 1 is further locked by the locknut 3, which improves the seismic performance of the rail bottom bending moment force sensor described in this embodiment, making the measurement results more accurate. precise.
specific Embodiment approach 3
[0034] Embodiment 3: This embodiment is to further limit the rail bottom bending moment force sensor described in Embodiment 1. In this embodiment, the top surfaces of the convex parts at both ends of the elastic strain beam 1 are respectively set There are multiple anti-skid teeth.
[0035] In this embodiment, the anti-slip teeth can prevent the elastic strain beam 1 from being deflected.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses a rail bottom bending moment type force transducer, and relates to a wheel rail force accurate measurement device. Problems of conventional shear force transducers during the measurement of the wheel rail force such as low precision, complicated installation, and poor sensitivity are solved. A central position of a bottom surface of an elastic strain beam is provided with a loading screwed through hole, and a loading bolt passes through the loading screwed through hole to apply pre-tightening force on the elastic strain beam, and a locknut is further used for fixing the position of the loading bolt. The side wall of the elastic strain beam is provided with a strain hole, and a strain gauge is pre-embedded in the strain hole. The rail bottom bending moment type force transducer is fixedly disposed on a steel rail bottom by two fixing clamps. The rail bottom bending moment type force transducer has advantages of high measurement precision, accurate measurement result, simple installation, simple structure, large rated range, and applicability in accurate measurement of steel rail wheel rail force.
Description
technical field [0001] The invention relates to an accurate measurement device for wheel-rail force. Background technique [0002] With the adjustment and rapid development of my country's economic structure, the demand for railway transportation is growing rapidly. China's railways have gradually established a modern transportation system with fast passenger transportation, fast freight transportation, heavy load, and high-density traffic. In order to meet the strategic requirements of the leap-forward development of railways, it is urgent to comprehensively improve the safety level of train operation. [0003] The interaction between the rolling stock wheel and the rail has a direct impact on the running stability of the rolling stock, the wear of the wheel and rail, the maintenance cost of the rolling stock, the maintenance cost of the line, and the safe operation of the rolling stock. This effect becomes more pronounced as the weight of the rolling stock increases and a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More