# US 12,000,712 B1 · Recyclable inclination measuring device

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- Number: US 12,000,712 B1
- Document ID: US12000712B1
- Status: Granted
- Kind: B1
- Application number: 18/534,757
- Filed: 2023-12-11
- Granted: 2024-06-04
- Earliest claimed: 2023-02-14
- Assignees: Railway Engineering Research Institute of China Academy of Railway Sciences; China Academy of Railway Sciences Corporation Limited
- Applicants: RAILWAY ENGINEERING RESEARCH INSTITUTE of CHINA ACADEMY of RAILWAY SCIENCES; China Academy of Railway Sciences
- Inventors: Yufang Zhang; Jian Li; Xu Gao; Guozhuang Song; Zhongmin Yang; Xin Dai; Shiyi Li; Qian Liu; Zonghao Wang; Hongze Guo
- Web page: https://patentgrep.com/patent/US12000712B1

## CPC

- G01C 9/06: Electric or photoelectric indication or reading means
- G01C 9/00: Measuring inclination, e.g. by clinometers, by levels
- G01C 9/02: Details
- G01P 15/18: in two or more dimensions
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)
- G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G})

## Abstract

A recyclable inclination measuring device includes measuring units arranged in a linear array during installation, and two adjacent measuring units are eccentrically hinged by a joint; during the measurement, measuring units are arranged in a Z shape in the measuring tube, the inner wall of the measuring tube is closely attached to the joint, and measuring units extending out of the measuring tube are folded and arranged. the present invention adopts a recyclable inclination measuring device with the above structure, during the measurement, it is placed in the measuring tube, which can be arranged in a Z shape under the action of gravity, and then it can be measured with the synchronous rotation of the measuring tube, when it is recovered, it only needs to be pulled out, which reduces the difficulty of recovery and improves the recovery efficiency.

## Claims

### Claim 1

A recyclable inclination measuring device, comprising measuring units arranged in a linear array during installation, wherein two adjacent measuring units are eccentrically hinged by a joint;
during a measurement, the measuring units are arranged in a Z shape in a measuring tube, an inner wall of the measuring tube is closely attached to the joint, and the measuring units extending out of the measuring tube are folded and arranged;
the joint includes a flexible hinge joint and a rigid hinge joint arranged in an axisymmetric manner, and cross sections of the flexible hinge joint and the rigid hinge joint are both right-angled triangular structures;
a tip of the flexible hinge joint and a tip of the rigid hinge joint are rotationally connected by a hinge shaft;
the flexible hinge joint is made of a flexible material with deformation, and the rigid hinge joint is made of a rigid material without deformation;
two ends of each of the measuring units are arranged with the flexible hinge joint and the rigid hinge joint respectively, and the flexible hinge joint and the rigid hinge joint on the same measuring unit are arranged symmetrically;
each of the measuring units includes a rigid rod;
a first right angle surface of the flexible hinge joint and a first right angle surface of the rigid hinge joint are fixedly connected with the rigid rod, and a second right angle surface of the flexible hinge joint and a second right angle surface of the rigid hinge joint are respectively flush with symmetrical sides of the rigid rod.

### Claim 2 (depends on 1)

The recyclable inclination measuring device according to claim 1, wherein each of the measuring units also includes a three-axis acceleration sensor arranged in a middle position of the rigid rod through a packaging box.

### Claim 3 (depends on 2)

The recyclable inclination measuring device according to claim 2, wherein two ends of the three-axis acceleration sensor are connected to an outlet cable, and the outlet cable is sequentially connected to the packaging box and the joint.

### Claim 4 (depends on 1)

The recyclable inclination measuring device according to claim 1, wherein both the flexible hinge joint and the rigid hinge joint are in interference fit with an inner wall of the rigid rod.

### Claim 5 (depends on 2)

The recyclable inclination measuring device according to claim 2, wherein the three-axis acceleration sensor is waterproofed with an IP68 rating.