CN214372251U - Geometric parameter measuring instrument for subway contact net - Google Patents
Geometric parameter measuring instrument for subway contact net Download PDFInfo
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- CN214372251U CN214372251U CN202022932756.3U CN202022932756U CN214372251U CN 214372251 U CN214372251 U CN 214372251U CN 202022932756 U CN202022932756 U CN 202022932756U CN 214372251 U CN214372251 U CN 214372251U
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Abstract
The utility model relates to a subway contact net geometric parameters intelligence precision measurement appearance, measuring apparatu are portable dolly structure, walk capable, measure host computer, electrical control, discernment camera, push rod and line structure light indication part including the automobile body, walk the direction of advance of walking the mechanism at the automobile body and arrange from a left side to the right side in proper order: the device comprises an electric control device, a push rod display mechanism, a recognition camera, a measurement host and a line structure light indicating mechanism, wherein the measurement host, the recognition camera and the push rod display mechanism are respectively connected with the electric control device. The utility model discloses a high accuracy laser ranging, harmonic drive precision control, absolute formula high accuracy grating angle measurement technique have realized the high-accuracy measurement of geometric parameters such as subway contact net height and pulling-out value. Meanwhile, the measuring instrument realizes automatic tracking and measurement of the contact net and automatic identification of characteristics such as a dropper and a positioning point of the contact net by using technologies such as line structured light laser images, image analysis, image processing and computer graphics.
Description
Technical Field
The utility model belongs to the technical field of subway construction and operation, concretely relates to subway contact net geometric parameters intelligence precision measurement appearance, especially an utilize line laser image to realize the removal dolly formula subway contact net geometric parameters measuring apparatu of characteristics such as automatic tracking contact net and discernment dropper, setpoint.
Background
In order to reduce the construction cost of the subway tunnel, the contact net in the subway tunnel generally adopts a rigid suspension form. Compared with a flexibly suspended contact net, the rigidly suspended contact net has the advantages of small occupied clearance, simple structure, no external tension, no risk of disconnection of a contact line, convenience in maintenance and the like. However, the rigid suspension catenary has the defects of poor elasticity, and arcing between the pantograph and the contact line is easy to occur during train operation.
In order to ensure the electricity receiving quality of a pantograph-catenary rigidly suspended in a subway and improve the running stability of the subway, the precision requirement of the height range of a contact line of the subway overhead line system is controlled within 1-2 mm. At present, a laser measuring instrument of a DJJ-8 contact net is generally adopted to measure geometrical parameters of the contact net during subway maintenance and overhaul, and the problems of low measuring efficiency and high labor intensity of workers exist. Along with the improvement of the urban rail transit scale, the subway operation mileage shows explosive growth, the efficiency of the overhaul work of the subway overhead line system is improved, the gradual realization of the automation of detection becomes a consensus of the subway department, and the development trend of the detection of the subway overhead line system is realized.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a subway contact net geometric parameters intelligence precision measurement appearance. The utility model integrates the high-precision laser ranging technology, the harmonic transmission precision control technology, the absolute high-precision grating angle measurement technology and the like, and realizes the high-precision measurement of geometrical parameters such as the height of a subway contact line, a pull-out value and the like; the movable trolley structure can be continuously pushed and dynamically measured on the track; the automatic tracking and measurement of subway contact lines and the automatic identification of characteristics such as catenary dropper and positioning point are realized by utilizing the technologies of line structured light laser image, image analysis, image processing, computer graphics and the like. The utility model discloses the measurement of the hard contact net that hangs of mainly used subway also is applicable to the measurement of the soft contact net that hangs of subway under the night condition simultaneously. The maintenance of subway is all gone on evening, the utility model discloses a function of laser instruction part is limited only in the tunnel and the outer night condition in tunnel, can't use under the highlight daytime. The utility model discloses the technical scheme who adopts as follows:
a geometric parameter measuring instrument for a subway overhead line system comprises: the device comprises a vehicle body traveling mechanism, a measuring host, an electric control device, a recognition camera, a push rod display mechanism and a line structure light indicating mechanism; the vehicle body walking mechanism is used for realizing the rapid pushing of the measuring instrument on the subway rail and is sequentially arranged from left to right in the advancing direction of the vehicle body walking mechanism: the system comprises an electric control device, a push rod display mechanism, a recognition camera, a measurement host and a line structure light indicating mechanism, wherein the measurement host, the recognition camera and the push rod display mechanism are respectively connected with the electric control device;
the measuring host is positioned in the middle of the upper surface of the beam of the vehicle body walking mechanism and used for measuring the distance between the contact line and the distance meter; the electric control device is positioned on the left of the upper surface of the beam of the vehicle body walking mechanism and is used for processing images, controlling the rotation of the measurement host and realizing the automatic aiming of the contact line; the recognition camera is positioned on the front surface of a cross beam of the vehicle body walking mechanism and used for acquiring an image of line laser on a contact net in an area above the measuring instrument; the push rod display mechanism is positioned on the section bar on the rear surface of the cross beam of the vehicle body walking mechanism and is used for displaying an image and measurement data of a contact network above the measuring instrument and a geometric parameter oscillogram of the contact network; the line structure light indicating mechanism is used for projecting one or more parallel line structure laser lines to the contact line to indicate the position of the contact line, distinguish the dropper and the positioner and is positioned on the front surface of the cross beam of the vehicle body walking mechanism.
The utility model discloses a theory of operation:
no matter the arrangement form of the subway overhead line system is rigid suspension or flexible suspension, the overhead line for supplying power to the subway locomotive is at the lowest height above the railway line. According to the characteristics that the image positions of targets with different heights or distances in the camera are different, the stray target interference can be eliminated, and the contact line can be determined.
The utility model has the advantages that:
the utility model discloses a portable dolly structure can carry out automatic tracking and dynamic continuous measurement to the contact net.
The utility model discloses a subway rigid suspension contact net geometric parameters's precision, continuous and quick measurement, subway flexible suspension contact net geometric parameters's measurement when compatible night condition simultaneously.
The utility model discloses have the automatic function of aiming the tracking contact wire and extracting characteristic data such as dropper and setpoint automatically.
The utility model discloses reduce workman's intensity of labour widely, improved the efficiency that the contact net overhauld the work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention, and that those skilled in the art will be able to derive other drawings without inventive step from these drawings, which are within the scope of the present application.
Fig. 1 is a perspective view of the overall structure of the intelligent precision measuring instrument according to the embodiment of the present invention;
fig. 2 is a top view of the overall structure of the intelligent precision measuring instrument according to the embodiment of the present invention;
FIG. 3 is a front view of the vehicle body traveling mechanism according to the embodiment of the present invention;
FIG. 4 is a plan view of the vehicle body traveling mechanism according to the embodiment of the present invention;
fig. 5 is a front view of the measurement host according to the embodiment of the present invention;
fig. 6 is a top view of the measurement host according to the embodiment of the present invention;
fig. 7 is a perspective view of a measurement host casing according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electrical control apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a push rod display mechanism according to an embodiment of the present invention;
fig. 10 is a schematic view illustrating a usage status of the push rod display mechanism according to the embodiment of the present invention;
fig. 11 is a schematic view of the telescopic state of the line structured light indicating mechanism according to the embodiment of the present invention;
fig. 12 is a schematic folded state diagram of the line structured light indicating mechanism according to the embodiment of the present invention;
FIG. 13 is a top view of the gauge in a folded state of the line structured light indicator mechanism;
in the figure, 1-a vehicle body running mechanism, 2-a measuring host, 3-an electric control device, 4-a recognition camera, 5-a push rod display mechanism, 6-a line structured light indicating mechanism, 7-a side beam, 8-a cross beam, 9-a running wheel, 10-a fixed side wheel, 11-a movable side wheel, 12-a displacement sensor, 13-a tilt angle sensor, 14-a mileage sensor, 15-a main bracket, 16-a fixed frame, 17-a main shaft, 18-an absolute high-precision grating encoder, 19-a five-phase harmonic speed reducing motor, 20-a high-precision laser range finder, 21-a tracking industrial camera, 22-an illuminating flashlight, 23-a shell, 24-a control panel, 25-an industrial host, 26-a rotating and locking mechanism, 27-push rod, 28-liquid crystal display component, 29-damping hinge, 30-aluminum alloy section bar, 31-laser component, 32-connecting plate, 33-bearing fixing seat and 34-bearing.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, it is a perspective view of the whole structure of the intelligent precision measuring instrument according to the embodiment of the present invention; as shown in fig. 2, it is a top view of the whole structure of the intelligent precision measuring instrument according to the embodiment of the present invention. An intelligent precision measuring instrument for geometrical parameters of a subway overhead line system comprises: the device comprises a vehicle body traveling mechanism 1, a measuring host machine 2, an electric control device 3, a recognition camera 4, a push rod display mechanism 5 and a line-structured light indicating mechanism 6. The vehicle body walking mechanism 1 is a carrier for realizing rapid pushing on a track by a subway overhead line system geometric parameter measuring instrument, and is sequentially arranged from left to right in the advancing direction of the vehicle body walking mechanism 1: the device comprises an electric control device 3, a push rod display mechanism 5, a recognition camera 4, a measurement host machine 2 and a line structured light indication mechanism 6, wherein the measurement host machine 2, the recognition camera 4 and the push rod display mechanism 5 are respectively connected with the electric control device 3. The measuring host 2 is located in the middle of the upper surface of the beam of the vehicle body walking mechanism 1, is fixedly connected with the beam through a screw and is used for measuring the distance between the contact line and the distance meter. The electric control device 3 is positioned on the left side of the upper surface of the beam of the vehicle body walking mechanism 1, is fixedly connected with the beam through a screw, and is used for processing images, controlling the rotation of the measurement host and realizing the automatic aiming of the contact line. The recognition camera 4 is positioned on the front surface of a cross beam of the vehicle body walking mechanism 1, is fixedly connected with the cross beam through a screw and is used for acquiring images of line laser on a contact net in an area above the measuring instrument. The push rod display mechanism 5 is positioned on the section bar on the rear surface of the cross beam of the vehicle body walking mechanism 1, is fixedly connected with the section bar through a screw, and is used for displaying an image of a contact network, measurement data and a geometric parameter oscillogram of the contact network above the intelligent precision measuring instrument. The line structure light indicating mechanism 6 is used for projecting one or more parallel line structure laser lines to the contact line to indicate the position of the contact line, distinguish the dropper and the positioner, is positioned on the front surface of the beam of the vehicle body walking mechanism 1, and is fixedly connected through a screw; when not in use, the folding type foldable frame is tightly attached to the front surface of the cross beam, and when in use, the folding type foldable frame is stretched along the pushing direction and is in a stretching state.
As shown in fig. 3, it is a front view of the vehicle body running mechanism according to the embodiment of the present invention; as shown in fig. 4, a plan view of the vehicle body travel mechanism according to the embodiment of the present invention is shown. The vehicle body running mechanism 1 consists of a vehicle body frame and a running component. The vehicle body frame is of a T-shaped structure consisting of side beams 7 and cross beams 8 made of aluminum alloy materials and used for mounting a walking assembly, a measuring host, an electric control device, a recognition camera, a push rod display mechanism, a linear structure light indication mechanism, a displacement sensor, a mileage sensor, an inclination angle sensor and the like. The vehicle body frame with the T-shaped structure realizes that the measuring instrument is stably pushed on the track; compared with an H-shaped structure, the volume and the weight of the measuring instrument are reduced.
The walking assembly comprises walking wheels 9 and side wheels, which respectively act on the top surface and the inner side of a steel rail of the subway rail to ensure that the measuring instrument is stably pushed on the rail. The number of the walking wheels 9 is three, and the walking wheels are respectively and fixedly arranged at the positions of three end parts of the vehicle body frame with the T-shaped structure; correspondingly, each walking wheel 9 is provided with a side wheel in a matching way, a fixed side wheel 10 is matched with the walking wheel 9 on the side beam 7, and the fixed side wheel 10 is fixedly arranged on the vehicle body frame; the movable side wheels 11 are matched with the walking wheels 9 on the cross beam 8, and the movable side wheels 11 are arranged on the linear guide rail on the lower surface of the cross beam 8. The fixed and movable side wheels are fixed on the vehicle body frame and do not have relative displacement with the vehicle body frame; the movable side wheels are connected with a linear guide rail in the vehicle body frame and can move along the direction of a vehicle body cross beam, so that the side wheels can be in close contact with steel rails at all positions, and the derailment of the vehicle body walking mechanism 1 is prevented. And a displacement sensor 12 is arranged on the vehicle body frame, is connected with the movable side wheel 11 and is used for measuring the track gauge value of the line in real time. The vehicle body frame is provided with an inclination sensor 13 to realize the measurement of the line level (superelevation). The vehicle body frame is provided with a mileage sensor 14 for recording the driving mileage of the measuring instrument. The side beams 7 and the cross beams 8 are hollow aluminum alloy square tubes, and the sensors are designed and installed inside the aluminum alloy square tubes, so that external wiring is reduced, and the reliability of line connection is improved.
In fig. 3, the projection above the right side of the cross beam 8 is a small accessory such as a handle, and plays a role of lifting when the measuring instrument is carried; in fig. 4, the protrusion on one side of the cross beam 8 is an aluminum square tube profile of 80x80x3, which is used for installing and fixing the push rod display mechanism 5.
As shown in fig. 5, it is a front view of the measurement host according to the embodiment of the present invention; as shown in fig. 6, it is a top view of the measurement host according to the embodiment of the present invention; as shown in fig. 7, it is a perspective view of the measurement host casing according to the embodiment of the present invention. The measurement host machine 2 comprises a main support 15, a fixed frame 16, a main shaft 17, a bearing fixing seat 33, a bearing 34, an absolute type high-precision grating encoder 18, a five-phase harmonic speed reduction motor 19, a high-precision laser distance meter 20, a tracking industrial camera 21, an illuminating flashlight 22, a shell 23 and the like.
The main frame 15 and the fixed frame 16 are fixedly connected into a whole through the main shaft 17, the bearing fixing seat 33 and the bearing 34, and the fixed frame 16 can rotate around the axis of the main shaft 17. The main support 15 is of a concave three-dimensional structure, the fixing frame 16 is arranged in a groove of the main support 15 through the main shaft 17, and the main shaft 17 is fixed on the upper part of the main support 15 through the bearing fixing seat 33 and the bearing 34.
The high-precision laser range finder 20 and the industrial camera 21 for tracking are arranged in tandem and mounted inside the fixed frame 16, and the optical axis of the high-precision laser range finder 20 and the optical axis of the industrial camera 21 for tracking are parallel and perpendicular to the rotation axis (i.e., the main shaft 17) of the fixed frame 16. The industrial camera 21 for tracking is provided with an automatic aperture, and the flashlight illuminators 22 are provided on the left and right sides, and the surveying instrument can automatically adjust the size of the aperture and control the opening and closing of the flashlight illuminators 22 according to the image condition. The absolute type high-precision grating encoder 18 and the five-phase harmonic speed reducing motor 19 are respectively arranged on the outer side faces of the front side and the rear side of the main support 15, the absolute type high-precision grating encoder 18 is located on one side of the main shaft 17 and connected with the fixed frame 16 through the main shaft 17 for accurately measuring and controlling the rotation angle of the distance measuring instrument in the fixed frame 16. The measuring mainframe 2 is integrally encapsulated by a housing 23.
The measuring main machine 2 is arranged at the center of the vehicle body frame (i.e. the center of the subway line), and is exemplified as follows: the track gauge refers to the horizontal distance of the positions 16mm below the tops of the two rails from the inner sides, and assuming that the track gauge of the subway line is 1435mm, the horizontal distance between the rotation axis of the high-precision laser distance measuring instrument 20 and the tracking industrial camera 21 and the position 16mm below the top of the rail at one side is half of the international standard track gauge 1435mm, and at this time, the measuring host machine 2 is arranged at the center of the train body frame.
As shown in fig. 8, is a schematic structural diagram of an electrical control apparatus according to an embodiment of the present invention. The electric control device 3 is a core component of the intelligent precision measuring instrument and consists of a control panel 24 and an industrial host 25. The control board 24 is used for collecting measurement data of various sensors such as a distance meter, an encoder, a motor, a camera, a displacement sensor and the like, and feeding back the measurement data to the industrial host 25, and the industrial host 25 returns results to the sensors after analyzing and processing the collected data. As a preferred embodiment, the control board 24 is a driving circuit integrated with the STM32F103 as a main control chip; the industrial host 25 is an industrial host of BM77 model, and is integrated with a 4-core processor, an onboard memory and a plurality of USB ports and serial ports.
The recognition camera 4 is composed of an industrial camera with a high frame rate and is used for acquiring images of a subway overhead contact system above the intelligent precision measuring instrument at a high speed.
As shown in fig. 9, it is a schematic structural diagram of a push rod display mechanism according to an embodiment of the present invention; fig. 10 is a schematic view of a usage state of the push rod display mechanism according to an embodiment of the present invention. The push rod display mechanism 5 comprises a rotating and locking mechanism 26, a push rod 27, a liquid crystal display assembly 28 and the like. The rotating and locking mechanism 26 is fixedly arranged on the vehicle body frame, the push rod 27 is connected with the rotating and locking mechanism 26, the rotating and locking mechanism 26 enables the push rod 27 to rotate around a rotating shaft fixed on the vehicle body frame, and a certain angle is kept after the push rod 27 is lifted, so that the observation and the operation of workers are convenient; the liquid crystal display assembly 28 is installed at the handle of the push rod 27, and is used for displaying an image, measurement data, a geometric parameter oscillogram and the like of the overhead line system above the intelligent precision measuring instrument, and can interact with each sensor on a measurement interface.
As shown in fig. 11, it is a schematic view of the telescopic state of the line structured light indicating mechanism according to the embodiment of the present invention; fig. 12 is a schematic diagram of a folded state of the line structured light indicating mechanism according to the embodiment of the present invention. The line structured light indicating mechanism 6 is composed of a damping hinge 29, an aluminum alloy section bar 30, a laser component 31, a connecting plate 32 and the like. The aluminum alloy section 30 is a rectangular tube with two sections of folding, and the damping hinge 29 is used for extending, retracting, folding and unfolding the aluminum alloy section 30. When the measuring instrument does not work, in order to reduce the volume of the measuring instrument, the aluminum alloy section bar 30 is in a folding state. Before the measuring instrument is put into the track and starts working, the line-structured light indicating mechanism 6 is unfolded and extended out. As shown in fig. 13, a plan view of the measuring instrument in a folded state of the line structured light indicating mechanism according to the embodiment of the present invention is shown.
The connecting plate 32 connects the damping hinge 29 with the aluminium alloy profile 30 and between two sections of aluminium alloy profile. The laser assembly 31 is mounted at the outer end of the aluminium alloy profile 30.
According to the detection requirement, the laser assembly 31 can project one or more parallel line-structured laser lines onto the contact line to indicate the position of the contact line (tracking and aiming the target), distinguish the features of the dropper and the locator, and the like.
The utility model discloses a measuring apparatu during operation selects rigidity to hang the mode or the flexible mode of hanging according to the job scene. The utility model discloses be equipped with 2 industrial cameras, be respectively the identification camera on tracking industrial camera and the automobile body frame curb girder in the measurement host computer. The industrial camera for tracking collects a projection image of line laser in an area above the measuring instrument on a contact net and then transmits the projection image to an industrial host, the industrial host processes and analyzes the image according to the gray difference between structured light and a background in the image, the structure and position information of a contact line and a busbar and the like, then extracts the position of the structured light line at the center of the busbar, calculates the distance deviation between the position of the contact line and the center of the industrial camera for tracking, converts the distance deviation into a pulse signal and transmits the pulse signal to the five-phase harmonic speed reducing motor, controls and drives the five-phase harmonic speed reducing motor to rotate, and drives the fixed frame where the industrial camera for tracking is located to rotate, so that the position of the contact line and the center of the industrial camera for tracking coincide, and automatic aiming of the contact line is realized. Because the industrial camera for tracking and the laser range finder are arranged in the fixed frame in parallel front and back, when the center of the industrial camera for tracking and the contact line coincide, a laser spot of the high-precision laser range finder can simultaneously hit the contact line, thereby measuring the distance between the contact line and the high-precision laser range finder. In the walking measurement process of the measuring instrument, the camera, the motor and the distance measuring instrument continuously act, so that automatic tracking and measurement in the walking process are realized.
The utility model discloses in, image recognition's algorithm, the method of control measurement host computer are prior art, no longer give unnecessary details here.
Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. Subway contact net geometric parameters measuring apparatu, its characterized in that includes: the device comprises a vehicle body walking mechanism (1), a measuring host (2), an electric control device (3), a recognition camera (4), a push rod display mechanism (5) and a line structure light indicating mechanism (6); the vehicle body walking mechanism (1) is used for realizing the rapid pushing of the measuring instrument on the subway rail, and is sequentially arranged from left to right in the advancing direction of the vehicle body walking mechanism (1): the device comprises an electric control device (3), a push rod display mechanism (5), an identification camera (4), a measurement host (2) and a line structure light indicating mechanism (6), wherein the measurement host (2), the identification camera (4) and the push rod display mechanism (5) are respectively connected with the electric control device (3);
the measuring host (2) is positioned in the middle of the upper surface of the beam of the vehicle body walking mechanism (1) and is used for measuring the distance between the contact line and the distance meter; the electric control device (3) is positioned on the left of the upper surface of the beam of the vehicle body walking mechanism (1) and is used for processing images, controlling the rotation of the measurement host and realizing the automatic aiming of the contact line; the recognition camera (4) is positioned on the front surface of a cross beam of the vehicle body walking mechanism (1) and is used for acquiring an image of line laser on a contact net in an area above the measuring instrument; the push rod display mechanism (5) is positioned on the profile on the rear surface of the cross beam of the vehicle body walking mechanism (1) and is used for displaying an overhead contact system image, measurement data and an overhead contact system geometric parameter oscillogram above the measuring instrument; the line structure light indicating mechanism (6) is used for projecting one or more parallel line structure laser lines to the contact line to indicate the position of the contact line, distinguish the dropper and the positioner and is positioned on the front surface of the cross beam of the vehicle body travelling mechanism (1).
2. The geometrical parameter measuring instrument of the subway overhead line system according to claim 1, wherein said vehicle body running mechanism (1) is composed of a vehicle body frame and a running component; the vehicle body frame is of a T-shaped structure consisting of side beams (7) and cross beams (8) which are made of aluminum alloy materials, and the walking assembly comprises walking wheels (9) and side wheels;
the number of the walking wheels (9) is three, and the walking wheels are respectively and fixedly arranged at the three end parts of the vehicle body frame with the T-shaped structure; each walking wheel (9) is provided with a side wheel in a matching way, the fixed side wheel (10) is matched with the walking wheel (9) on the side beam (7), and the fixed side wheel (10) is fixedly arranged on the vehicle body frame; the movable side wheels (11) are matched with the walking wheels (9) on the cross beam (8), and the movable side wheels (11) are arranged on the linear guide rail on the lower surface of the cross beam (8).
3. The subway overhead line system geometric parameter measuring instrument according to claim 2, wherein a displacement sensor (12), an inclination sensor (13) and a mileage sensor (14) are installed on the car body frame, and the displacement sensor (12) and the movable side wheels (11) are installed on the car body frame.
4. The subway overhead line system geometric parameter measuring instrument according to claim 3, wherein the side beams (7) and the cross beams (8) are hollow aluminum alloy square tubes, and the sensor is designed and installed in the aluminum alloy square tubes.
5. The geometrical parameter measuring instrument of the subway overhead line system according to claim 1, wherein said measuring host (2) is composed of a measuring host shell, an absolute high-precision grating encoder (18), a five-phase harmonic gear motor (19), a high-precision laser range finder (20), an industrial camera (21) for tracking, a lighting flashlight (22) and a housing (23);
the measuring host shell is fixedly connected into a whole by a main support (15) and a fixing frame (16) through a main shaft (17), a bearing fixing seat (33) and a bearing (34), the main support (15) is of a concave three-dimensional structure, the fixing frame (16) is arranged in a groove of the main support (15) through the main shaft (17), and the main shaft (17) is fixed at the upper part of the main support (15) through the bearing fixing seat (33) and the bearing (34);
the high-precision laser range finder (20) and the industrial camera (21) for tracking are arranged in front and back and are installed in the fixed frame (16), and the optical axis of the high-precision laser range finder (20) and the optical axis of the industrial camera (21) for tracking are parallel and are vertical to the rotating shaft center of the fixed frame (16); the industrial camera (21) for tracking is provided with an automatic diaphragm, the left side and the right side of the industrial camera are provided with illuminating flashlights (22), an absolute type high-precision grating encoder (18) and a five-phase harmonic speed reducing motor (19) are respectively arranged on the outer side surfaces of the front side and the rear side of a main support (15), and the absolute type high-precision grating encoder (18) is positioned on one side of a main shaft (17) and is connected with a fixing frame (16) through the main shaft (17).
6. The geometrical parameter measuring instrument of the subway overhead line system according to claim 1, wherein the electric control device (3) is composed of a control board (24) and an industrial host (25), the control board (24) is used for collecting measurement data and feeding back the measurement data to the industrial host (25), and the industrial host (25) analyzes and processes the collected data.
7. The geometrical parameter measuring instrument of the subway overhead line system according to claim 6, wherein said control board (24) is a driving circuit integrated with STM32F103 as a main control chip; the industrial host (25) is an industrial host of BM77 model and is integrated with a 4-core processor, an on-board memory and a plurality of USB ports and serial ports.
8. The geometrical parameter measuring instrument of the subway overhead line system according to claim 1, wherein said push rod display mechanism (5) is composed of a rotating and locking mechanism (26), a push rod (27) and a liquid crystal display assembly (28); the rotating and locking mechanism (26) is fixedly arranged on the frame of the vehicle body, the push rod (27) is connected with the rotating and locking mechanism (26), and the liquid crystal display component (28) is arranged at the handle of the push rod (27).
9. The geometrical parameter measuring instrument of the subway overhead line system according to claim 1, wherein said line structured light indicating mechanism (6) is composed of a damping hinge (29), an aluminum alloy section (30), a laser assembly (31) and a connecting plate (32); the aluminum alloy section (30) is a rectangular pipe with two sections of folding, and the damping hinge (29) is used for realizing the extension, retraction, folding and unfolding of the aluminum alloy section (30); the damping hinge (29) is connected with the aluminum alloy section (30) and the two sections of aluminum alloy sections through the connecting plate (32); the laser assembly (31) is arranged at the outer end part of the aluminum alloy section bar (30).
10. The subway overhead line system geometric parameter measuring instrument according to any one of claims 1 to 9, wherein the measuring host (2), the electric control device (3), the recognition camera (4), the push rod display mechanism (5) and the line structure light indication mechanism (6) are fixedly connected to the vehicle body running mechanism (1) through screws.
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| CN202022932756.3U CN214372251U (en) | 2020-12-07 | 2020-12-07 | Geometric parameter measuring instrument for subway contact net |
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| CN202022932756.3U CN214372251U (en) | 2020-12-07 | 2020-12-07 | Geometric parameter measuring instrument for subway contact net |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710229A (en) * | 2020-12-07 | 2021-04-27 | 济南蓝动激光技术有限公司 | Subway contact net geometric parameter measuring instrument and measuring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710229A (en) * | 2020-12-07 | 2021-04-27 | 济南蓝动激光技术有限公司 | Subway contact net geometric parameter measuring instrument and measuring method |
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