Geometric parameter measuring device for railway overhead line system

Abstract

The utility model discloses a geometric parameter measuring device for a railway contact network, which belongs to the technical field of rail transit and comprises a support frame, and a laser range finder and a tilt angle sensor are fixedly mounted on the support frame. A computer is fixedly mounted on the support frame; the laser range finder and the tilt angle sensor are fixedly installed on the supporting frame and then placed beside the rail, the distance and the tilt angle of the rail tops of the left steel rail and the right steel rail and the bottom of the contact line are measured, then parameters of the guide height and the pull-out value of the contact line are calculated, and therefore measurement can be conducted without being placed on the rail. Therefore, potential safety hazards are greatly reduced, and accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, in particular to a measuring device for geometric parameters of a railway catenary. Background Art

[0002] A railway catenary is a special form of overhead transmission line used to supply power to electric locomotives in electrified railways. It mainly consists of a contact suspension, a support device, a positioning device, a pillar and a foundation, etc. The contact suspension includes a contact wire, a suspension string, a carrier cable, as well as connecting parts and insulators, and its function is to transmit electric energy from the traction substation to the electric locomotive. The support device is used to support the contact suspension and transfer the load to the pillar or other buildings. The positioning device includes a positioning pipe and a positioner, which are responsible for fixing the position of the contact wire to ensure continuous contact between the pantograph and the contact wire.

[0003] The geometric parameters of the catenary are key indicators to ensure the normal operation of the electrified railway catenary and the safe operation of trains. Especially in the catenary, the two parameters of the contact wire height (altitude) and the contact wire stagger value are directly related to whether the electric locomotive (high-speed train) can operate safely and stably.

[0004] At present, the existing devices on the market for measuring the parameters of the contact wire height and the stagger value all adopt vehicle-mounted or hand-held measuring devices. For example, the DDJ-8 type provided by Jinan Landong Laser Technology Co., Ltd. is a hand-held measuring device. The measuring device is placed on the track, and then by measuring the inclination angle and distance of the contact wire relative to the measuring device, the geometric parameter measurement is completed. For vehicle-mounted geometric parameter measurement, the measuring device is installed on a moving carrier, which can be an electric locomotive or a trolley that can be pushed on the track. The moving carrier moves on the guide rail, and during the movement of the moving carrier, the measurement of the geometric parameters of the catenary is completed, that is, the parameters of the contact wire height and the stagger value. Currently, the detection devices of vehicle-mounted geometric parameter measurement devices mainly include those based on laser ranging and those based on line structured light sensors.

[0005] However, the above-mentioned existing measuring devices must move on the track to perform the measurement. Therefore, it is necessary to avoid the running locomotives. Otherwise, serious safety accidents will occur. However, the measurement personnel often cannot timely master the running time of high-speed trains. When, during the measurement process, it is found that a locomotive is coming, due to the very high speed of the locomotive, it is already impossible to complete the full evacuation of personnel and equipment, resulting in a very large safety hazard.

[0006] In view of this, we propose a measuring device that can measure the contact wire parameters without running on the track; that is, a measuring device for geometric parameters of a railway catenary, thereby avoiding safety hazards. Content of the Utility Model

[0007] The object of the utility model is to solve the problem in the prior art that it must be placed on a track for measurement, and to propose a device for measuring geometric parameters of an overhead railway catenary beside the track.

[0008] In order to achieve the above object, the utility model adopts the following technical scheme:

[0009] A device for measuring geometric parameters of a railway catenary includes a support frame, on which a laser rangefinder and an inclination sensor are fixedly installed; a computer is also fixedly installed on the support frame, and the support frame can be fixed on a common camera tripod.

[0010] Preferably, it further includes an antenna; a jack is provided at the top of the support frame, and the antenna is inserted into the jack; the antenna is signal-connected to the computer.

[0011] Preferably, a high-definition camera is also fixedly installed on the support frame.

[0012] Preferably, the support frame is of a double-layer design; the laser rangefinder and the inclination sensor are fixedly installed on the upper surface of the bottom layer.

[0013] Preferably, the bottom of the support frame is fixedly connected with a mounting plate, and a clamping groove is provided at the bottom of the mounting plate.

[0014] Preferably, a mounting groove is provided on the mounting plate, and the mounting groove is in an inverted "T" shape; the mounting plate is fixedly connected with the support frame through the mounting groove.

[0015] Compared with the prior art, the utility model provides a device for measuring geometric parameters of a railway catenary, which has the following beneficial effects:

[0016] 1. For the device for measuring geometric parameters of the railway catenary, by fixedly installing the laser rangefinder and the inclination sensor on the support frame and then placing it beside the track, the distances and inclinations of the top of the left and right rails and the bottom of the catenary wire are measured, and then the parameters of the catenary wire height and pull-out value are calculated. Thus, it can be measured without being placed on the track, greatly reducing potential safety hazards and avoiding accidents.

[0017] 2. For the device for measuring geometric parameters of the railway catenary, if the measured point is at a relatively long distance, it can be assisted in alignment by the high-definition camera to avoid the situation where the laser rangefinder and the inclination sensor cannot accurately locate the measurement point.

[0018] 3. For the device for measuring geometric parameters of the railway catenary, by designing the support frame as double-layer, the convenience of connecting the data lines of the laser rangefinder and the inclination sensor inserted and connected to the computer is improved, and the reliability of the measurement data is also improved. Description of the Drawings

[0019] Figure 1 Structural schematic of a device for measuring geometric parameters of a railway catenary proposed by the present utility model Figure 1 ;

[0020] Figure 2 Structural schematic of a device for measuring geometric parameters of a railway catenary proposed by the present utility model Figure 2 ;

[0021] Figure 3 Structural schematic of a device for measuring geometric parameters of a railway catenary proposed by the present utility model Figure 3 ;

[0022] Figure 4 Structural schematic diagram of a support frame of a device for measuring geometric parameters of a railway catenary proposed by the present utility model;

[0023] Figure 5 Cross-sectional view of a mounting plate of a device for measuring geometric parameters of a railway catenary proposed by the present utility model.

[0024] In the figure: 1, support frame; 2, laser rangefinder; 201, inclination sensor; 3, computer; 301, antenna; 302, jack; 4, high-definition camera; 5, mounting plate; 501, card slot; 502, mounting groove. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] Embodiment:

[0028] Refer to Figures 1-5 , a device for measuring geometric parameters of a railway catenary, including a support frame 1, on which a laser rangefinder 2 and an inclination sensor 201 are fixedly installed; a computer 3 is also fixedly installed on the support frame 1.

[0029] The laser rangefinder 2 and the inclination sensor 201 are respectively connected to the computer 3 through data lines.

[0030] During measurement, first place the support frame 1 beside the track. Taking the support frame 1 as the origin of the coordinate system, align the laser rangefinder 2 and the inclination sensor 201 with the top of the left rail, and record the corresponding distance and inclination; then align with the top of the right rail and record the corresponding distance and inclination; finally, align with the bottom of the contact wire and record the corresponding distance and inclination as well.

[0031] Finally, transmit the distances and inclinations of the three points to the computer 3. According to geometric principles, calculate the parameters of the contact wire height and pull-out value, and then display them through the computer 3.

[0032] This measuring device fixes and installs the laser rangefinder 2 and the inclination sensor 201 on the support frame 1, then places it beside the track, measures the distances and inclinations of the tops of the left and right rails and the bottom of the contact wire at these three points, and then calculates the parameters of the contact wire height and pull-out value. Thus, it can be measured without being placed on the track, greatly reducing potential safety hazards and avoiding accidents.

[0033] A railway catenary geometric parameter measuring device disclosed in this embodiment further includes an antenna 301; there is a jack 302 at the top of the support frame 1, and the antenna 301 is inserted into the jack 302; the antenna 301 is signal-connected to the computer 3.

[0034] During the measurement process, data can also be sent to a distance in real time through the antenna 301 to achieve data synchronization and sharing.

[0035] A high-definition camera 4 is also fixedly installed on the support frame 1.

[0036] If the measured point is at a relatively long distance, the high-definition camera 4 can be used to assist in alignment to avoid the laser rangefinder 2 and the inclination sensor 201 being unable to accurately locate the measurement point.

[0037] As Figures 1-4 , among which, Figure 4 is an exploded view of the support frame 1 and the mounting plate 5. The support frame 1 is of a double-layer design; the laser rangefinder 2 and the inclination sensor 201 are fixedly installed on the upper surface of the bottom layer.

[0038] The high-definition camera 4 is installed on the lower surface of the bottom layer of the support frame 1, and the antenna 301 and the computer 3 are installed on the upper surface of the top layer of the support frame 1.

[0039] Only the laser rangefinder 2 and the inclination sensor 201 are installed on the upper surface of the bottom layer of the support frame 1. At the same time, no components are installed on the lower surface of the top layer of the support frame 1. The advantages of this design are as follows:

[0040] 1. The layered design improves the convenience of connecting the data cables inserted into the laser rangefinder 2 and the inclination sensor 201 to the computer 3.

[0041] 2. Installing the laser rangefinder 2 and the inclination sensor 201 below the top layer of the support frame 1 can also effectively avoid the probability of being impacted by external objects, prevent inaccurate measurement data, and improve the reliability of measurement data.

[0042] The bottom of the support frame 1 is fixedly connected with a mounting plate 5, and a card slot 501 is provided at the bottom of the mounting plate 5.

[0043] The mounting plate 5 is fixedly installed on the lower surface of the bottom layer of the support frame 1.

[0044] This railway catenary geometric parameter measuring device further includes a tripod.

[0045] During measurement, the support frame 1 is fixed on the pan head of the tripod through the mounting plate 5, and the tripod provides support to improve the stability of measurement.

[0046] The pan head of the tripod is stuck in the card slot 501 on the mounting plate 5.

[0047] Such as Figure 5 , a mounting groove 502 is provided on the mounting plate 5, and the mounting groove 502 is in an inverted "T" shape; the mounting plate 5 is fixedly connected with the support frame 1 through the mounting groove 502.

[0048] The mounting plate 5 is fixedly connected with the support frame 1 through bolts. The bolts are located in the mounting groove 502. Through the design that the mounting groove 502 is in an inverted "T" shape, the bolt heads are completely installed in the mounting groove 502, making the inside of the card slot 501 flat, so that the pan head is more stably clamped with the card slot 501 and avoids shaking.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A measuring device for geometric parameters of a railway catenary, comprising a support frame (1), characterized in that a laser rangefinder (2) and an inclination sensor (201) are fixedly installed on the support frame (1); a computer (3) is also fixedly installed on the support frame (1); a high-definition camera (4) is also fixedly installed on the support frame (1); the support frame (1) is of a double-layer design; the laser rangefinder (2) and the inclination sensor (201) are fixedly installed on the upper surface of the bottom layer; the bottom of the support frame (1) is fixedly connected with a mounting plate (5), and a card slot (501) is provided at the bottom of the mounting plate (5); a mounting groove (502) is provided on the mounting plate (5), and the mounting groove (502) is in an inverted "T" shape; the mounting plate (5) is fixedly connected with the support frame (1) through the mounting groove (502).

2. The geometric parameter measuring device for a railway catenary according to claim 1, characterized in that It further includes an antenna (301); a jack (302) is provided at the top of the support frame (1), and the antenna (301) is inserted into the jack (302); the antenna (301) is signal-connected to the computer (3).

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