CN112278007B - Vehicular dynamic measuring device for groove-shaped steel rail abrasion loss of tramcar - Google Patents
Vehicular dynamic measuring device for groove-shaped steel rail abrasion loss of tramcar Download PDFInfo
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- CN112278007B CN112278007B CN202011102154.3A CN202011102154A CN112278007B CN 112278007 B CN112278007 B CN 112278007B CN 202011102154 A CN202011102154 A CN 202011102154A CN 112278007 B CN112278007 B CN 112278007B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 30
- 238000005299 abrasion Methods 0.000 title claims abstract description 22
- 238000005259 measurement Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000011111 cardboard Substances 0.000 description 20
- 101100408454 Arabidopsis thaliana PLC6 gene Proteins 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
Abstract
The invention discloses a vehicle-mounted dynamic measuring device for the groove-shaped steel rail abrasion loss of a tramcar, which comprises a fixing assembly, an adjusting assembly and a rotating assembly which are sequentially connected, wherein the fixing assembly comprises a side fixing plate and two fixing clamping plates which are perpendicular to the plane of the side fixing plate, the adjusting assembly comprises an adjusting frame and an L-shaped motor mounting seat fixed on the adjusting frame, the rotating assembly comprises a vertically-arranged rotating vertical plate and a supporting plate arranged on one side of the rotating vertical plate, which is far away from the adjusting assembly, two symmetrically-arranged fixing grooves are fixed on the supporting plate, and a laser ranging sensor is arranged in each fixing groove. The device can be installed in pairs at the two ends of a single vehicle or at the joint of adjacent carriages, and the dynamic wear loss of the steel rail is measured through the average value of each measuring point, so that the measured data is more accurate and reliable; the invention has convenient installation and simple operation, and can dynamically test the groove-shaped steel rail abrasion loss when the tramcar runs only by programming and setting the motor and the laser ranging sensor through the PLC.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a vehicle-mounted dynamic measuring device for groove-shaped steel rail abrasion loss of a tramcar.
Background
Compared with a common railway, the tramway has smaller curve radius, the minimum radius can reach 30m, and the curve sections are numerous, so that the tramway has more complicated abrasion situations. The theory shows that: with the increase of the rail abrasion loss, huge hidden dangers can be caused to the operation safety of the tramcar. When the tramcar wheels roll on the groove-shaped steel rails, the contact abrasion loss is mainly at the top and the side of the groove-shaped steel rails, but at present, the abrasion loss measurement is usually carried out by adopting an abrasion meter, for example, Chinese patent CN 205808311U, a groove-shaped steel rail head side abrasion meter, discloses a measuring instrument, the testing efficiency is low, time and labor are wasted, the steel rail abrasion loss can be measured only when the tramcar stops operating, the steel rail abrasion condition can not be dynamically reflected constantly, and corresponding dynamic early warning is carried out by comparison. Therefore, a brand new testing device capable of dynamically measuring the groove-shaped steel rail abrasion loss of the tramcar in real time is needed, and is used for monitoring and early warning the operation safety of the tramcar and ensuring the safe operation of the tramcar.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the vehicle-mounted dynamic measuring device for the groove-shaped steel rail abrasion loss of the tramcar, which has the advantages of simple structure and reasonable design, can perform nondestructive reciprocating swing angle measurement on the track of the tramcar, and solves the problem of dynamically measuring the groove-shaped steel rail abrasion loss of the tramcar in real time.
In order to achieve the purpose, the invention adopts the following technical scheme:
the dynamic measuring device for the groove-shaped steel rail abrasion loss of the tramcar comprises a fixed component, an adjusting component and a rotating component which are connected in sequence,
the fixing assembly comprises a side fixing plate and two fixing clamping plates which are perpendicular to the plane of the side fixing plate, wherein the two fixing clamping plates are respectively a first fixing clamping plate and a second fixing clamping plate which are positioned at two ends of the side fixing plate;
the adjusting assembly comprises an adjusting frame and an L-shaped motor mounting seat fixed on the adjusting frame, and a motor is fixed on the motor mounting seat;
the rotating assembly comprises a vertical rotating vertical plate and a supporting plate transversely arranged at the position of the vertical rotating plate, the supporting plate is arranged on one side, away from the adjusting assembly, of the vertical rotating plate, two fixing grooves are formed in the upper side of the supporting plate, laser ranging sensors are arranged in the two fixing grooves in a bilateral symmetry mode, each fixing groove is provided with one laser ranging sensor, and a measuring opening corresponding to the position of a transmitter of each laser ranging sensor is formed in one side, away from the vertical rotating plate, of each fixing groove.
First fixed cardboard is equipped with movable cardboard towards one side of the fixed cardboard of second, the opposite side is fixed with automatically controlled groove, the center of activity cardboard is fixed with the regulation pole of adjusting movable cardboard position, first fixed cardboard department opens has the first regulation screw that supplies the regulating rod to pass, automatically controlled groove is the open hollow cuboid of top surface, automatically controlled inslot is fixed with power and PLC, power and PLC are located the left and right sides of automatically controlled inslot portion respectively, the power provides electric power for electric elements in the device, PLC control power supply, motor and laser ranging sensor.
The wire guide is arranged on one side, away from the fixing clamping plate, of the electric control groove, the wire guide corresponds to the power supply and the PLC in position and quantity, the cover plate is arranged on the top face of the electric control groove, and the cover plate is hinged to one side face of the electric control groove, so that the power supply and the PLC can be maintained conveniently.
The movable clamping plate and the second fixing clamping plate are opposite, elastic anti-slip pads are fixed on the opposite surfaces of the movable clamping plate and the second fixing clamping plate, corrugated grooves which are evenly arranged are formed in the opposite surfaces of the two elastic anti-slip pads, and therefore when the fixed clamping plate and the movable clamping plate are integrally fixed on the tramcar, a good damping effect is provided for the whole device, and the reality and reliability of data are guaranteed.
The adjusting bracket comprises an adjusting plate and an extension fixing plate connected with the adjusting plate, a guide groove is formed in one side of the adjusting plate, which faces to the side fixing plate, a T-shaped guide block matched with the guide groove in size is arranged at a corresponding position of the side fixing plate, a second adjusting screw hole for an adjusting screw to pass through is formed in the guide groove, a motor mounting seat is fixed on the upper side of the extension fixing plate, and the lower side of the extension fixing plate is an arc surface coaxial with an output shaft of a motor.
The rotary vertical plate is fixedly connected with an output shaft of the motor, a rotary guide plate is fixed at the lower end of the rotary vertical plate, the rotary guide plate is positioned on one side of the rotary vertical plate, which faces the motor, and is an arc-shaped plate coaxial with the output shaft of the motor, so that the motor can drive the rotary assembly to swing back and forth according to a fixed angle.
The regulating plate of the regulating frame has two setting modes, namely horizontal setting and vertical setting, so that the device is conveniently and integrally fixed at different positions of the tramcar.
When the regulating plate is transversely arranged, the side fixing plate and the extension fixing plate are transversely arranged, and the first fixing clamping plate and the second fixing clamping plate are vertically arranged at two ends of the side fixing plate.
When the adjusting plate is vertically arranged, the side fixing plate is vertically arranged, the extension fixing plate is transversely arranged, and the first fixing clamping plate and the second fixing clamping plate are transversely arranged at the upper end and the lower end of the side fixing plate.
Two second adjusting screw holes are formed in the adjusting plate, two adjusting screws are correspondingly arranged on the adjusting plate, and the adjusting assembly and the rotating assembly are guaranteed to be stable and fixed with the fixing assembly.
All the components used in the invention are the existing devices and equipment, for example, a KDHM-C400V power supply can be selected as a power supply, a PIO002 type PLC can be selected as a PLC, and a FT55-RLAM-480-PNSUIDL-L5M type laser displacement measuring sensor of Sensapat (Shanghai) industrial automation company Limited can be selected as a laser distance measuring sensor.
The beneficial effects of the invention include:
1) the invention can be installed in pairs at the two ends of a single vehicle or at the joint of adjacent carriages, and the dynamic wear loss of the steel rail is measured by the average value of each measuring point, so that the measured data is more accurate and reliable;
2) the invention has convenient installation and simple operation, and can dynamically test the groove-shaped steel rail abrasion loss when the tramcar runs only by programming and setting the motor and the laser ranging sensor through the PLC;
3) through motor and rotating assembly, carry out instantaneous rotation measurement to the surface of cell type rail in the trolley-bus is marchd, can realize that whole rail surface is intensive to be measured, whole process is relatively coherent, and measured data is more complete, has improved measurement of efficiency and measurement precision greatly, has extremely strong in-service use value.
Drawings
FIG. 1 is a schematic view of the structure described in example 1 of the present invention;
FIG. 2 is a front view of the overall structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG. 2;
FIG. 4 is a right side view of the overall structure of FIG. 2;
FIG. 5 is a schematic cross-sectional view taken along line B-B in FIG. 4;
FIG. 6 is a schematic cross-sectional view taken at C-C in FIG. 4;
FIG. 7 is a schematic view of the structure described in example 2 of the present invention;
FIG. 8 is a front view of the overall structure of FIG. 7;
FIG. 9 is a schematic cross-sectional view taken along line D-D in FIG. 8;
FIG. 10 is a view of the tram wheel traveling on a channel rail;
FIG. 11 is a front view of the structure of FIG. 10;
in the figure: 4. a fixing assembly; 5. a power source; 6. a PLC; 7. an adjusting bracket; 8. a motor mounting seat; 9. a motor; 10. a rotating frame; 11. a laser ranging sensor; 401. a side fixing plate; 402. a second fixing clip board; 403. a first fixed clamping plate; 404. an elastic non-slip mat; 405. a movable clamping plate; 407. a first adjusting screw hole; 408. adjusting a rod; 409. an electric control groove; 410. a cover plate; 411. a wire guide hole; 412. a guide block; 701. an adjusting plate; 702. extending the fixing plate; 703. a guide groove; 704. an adjusting screw; 1001. rotating the vertical plate; 1002. rotating the guide plate; 1003. a support plate; 1004. fixing grooves; G. tramcar wheels; H. a trough-shaped steel rail; m, a loss surface of the tramcar wheel in contact with the upper end surface of the groove-shaped steel rail; and N, a loss surface of the tramcar wheel in contact with the side surface of the groove-shaped steel rail.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the art, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy or achievement of the intended purposes of the present disclosure, are intended to be included within the scope of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in figures 1-11, when a tramcar wheel G rolls on a channel steel rail H, the relieved abrasion loss is mainly at the M position at the top of the channel steel rail H and the N position at the side surface, aiming at the characteristic, the invention provides a tramcar channel steel rail abrasion loss vehicle-mounted dynamic measuring device, which comprises a fixed component 4, an adjusting component and a rotating component which are connected in sequence, wherein fixed subassembly 4 includes the fixed cardboard that side fixed plate 401 and two perpendicular to side fixed plate 401 located the plane setting, two fixed cardboards are the fixed cardboard 402 of first fixed cardboard 403 and second that are located the both ends of side fixed plate 401 respectively, one side of first fixed cardboard 403 towards the fixed cardboard 402 of second is equipped with movable cardboard 405, the opposite side is fixed with automatically controlled groove 409, the center of movable cardboard 405 is fixed with the regulation pole 408 of adjusting movable cardboard 405 position, first fixed cardboard 403 department opens the first regulation screw 407 that supplies adjusting rod 408 to pass. All be fixed with elasticity slipmat 404 on the face that activity cardboard 405 and second fixed cardboard 402 are relative, and all set up align to grid's ripple groove on two elasticity slipmat 404's the relative face, when guaranteeing that fixed cardboard and activity cardboard are with device monolithic stationary on the tram, provide better shock attenuation effect to the device is whole. Automatically controlled groove 409 is the open hollow cuboid in top surface, and automatically controlled groove 409 internal fixation has power 5 and PLC6, and power 5 and PLC6 are located the inside left and right sides in automatically controlled groove 409 respectively, and power 5 provides electric power for electric elements in the device. A cover plate 410 is arranged on the top surface of the electric control groove 409, and the cover plate 410 is hinged with one side surface of the electric control groove 409; the side of the electric control slot 409 far away from the fixed clamping plate is provided with a wire hole 411, and the wire hole 411 is arranged corresponding to the positions and the number of the power supply 5 and the PLC 6.
The adjusting assembly comprises an adjusting frame 7 and an L-shaped motor mounting seat 8 fixed on the adjusting frame 7, a motor 9 is fixed on the motor mounting seat 8, the adjusting frame 7 comprises an adjusting plate 701 and an extension fixing plate 702 connected with the adjusting plate 701, a guide groove 703 is formed in one side, facing the side fixing plate 401, of the adjusting plate 701, a T-shaped guide block 412 matched with the size of the guide groove 703 is arranged on the corresponding position of the side fixing plate 401, a second adjusting screw hole for allowing an adjusting screw 704 to pass through is formed in the position of the guide groove 703, the number of the second adjusting screw hole is two, and the second adjusting screw hole and the adjusting screw 704 are uniformly arranged along the moving direction of the. The motor mounting seat 8 is fixed on the upper side of the extension fixing plate 702, and a smooth transition arc coaxial with the output shaft of the motor 9 is arranged on the lower side of the extension fixing plate 702.
The rotating assembly includes rotatory riser 1001 of vertical setting and the horizontal layer board 1003 that sets up, the output shaft fixed connection of rotatory riser 1001 and motor 9, the lower extreme of rotatory riser 1001 is fixed with rotatory deflector 1002, rotatory deflector 1002 is located rotatory riser 1001 towards one side of motor 9, and be the coaxial arc of output shaft with motor 9, layer board 1003 sets up the one side of keeping away from motor 9 at rotatory riser 1001, layer board 1003 upside is equipped with two fixed slots 1004, all be equipped with a laser rangefinder sensor 11 in two fixed slot 1004 bilateral symmetry settings and every fixed slot 1004, it has the corresponding measuring opening in transmitter position with laser rangefinder sensor 11 to keep away from one side of rotatory riser 1001 on the fixed slot 1004.
When the device is used, firstly the PLC6 is programmed, the rotation angle, the rotation speed, the rotation direction and the rotation times of the motor 9 are set, meanwhile, the measurement delay time and the on-off of the laser ranging sensor 11 are set, the laser ranging sensor 11 is connected with the control center of the tramcar by utilizing Wi-Fi, the device is installed at the two ends of the tramcar or the connecting position of two adjacent carriages in pairs, when the device is installed, the fixing component 4 and the connecting piece of the tramcar are fixed together by adjusting the adjusting rod 407, then the adjusting screw 704 is adjusted to control the distance between the laser ranging sensor 11 and the surface of the grooved steel rail, when the tramcar starts to run on the grooved steel rail after debugging, the power supply 5 is used for supplying power to the device as a whole, the PLC6 controls the motor 9 according to the set program and simultaneously drives the laser ranging sensor 11 to rotate to measure the surface of the, the measured data are transmitted to a control center of the tramcar in real time through wireless transmission, and then are compared with the section dimension standard value of the groove-shaped steel rail through a measured value, so that accurate abrasion loss is obtained, and real-time dynamic monitoring on the groove-shaped steel rail of the tramcar is achieved.
Example 1:
as shown in fig. 1 to 6, in the present embodiment, the adjusting plate 701 in the adjusting frame 7 is disposed horizontally, and accordingly, the side fixing plate 401 and the extension fixing plate 702 are both disposed horizontally, and the first fixing clip plate 403 and the second fixing clip plate 402 are vertically disposed at the left and right ends of the side fixing plate 401.
Example 2:
as shown in fig. 7-9, in the present embodiment, the adjusting plate 701 in the adjusting frame 7 is vertically disposed, correspondingly, the side fixing plate 401 is vertically disposed, the extension fixing plate 702 is horizontally disposed, and the first fixing clip plate 403 and the second fixing clip plate 402 are horizontally disposed at the upper and lower ends of the side fixing plate 401.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A dynamic measuring device for the abrasion loss of a groove-shaped steel rail of a tramcar comprises a fixed component, an adjusting component and a rotating component which are connected in sequence, and is characterized in that,
the fixing assembly comprises a side fixing plate and two fixing clamping plates which are perpendicular to the plane of the side fixing plate, wherein the two fixing clamping plates are respectively a first fixing clamping plate and a second fixing clamping plate which are positioned at two ends of the side fixing plate; a movable clamping plate is arranged on one side, facing the second fixed clamping plate, of the first fixed clamping plate, an electric control groove is fixed on the other side, an adjusting rod for adjusting the position of the movable clamping plate is fixed in the center of the movable clamping plate, a first adjusting screw hole for the adjusting rod to penetrate through is formed in the first fixed clamping plate, the electric control groove is a hollow cuboid with an open top surface, a power supply and a PLC are fixed in the electric control groove, and the power supply and the PLC are respectively located on the left side and the right side inside the electric control groove;
the adjusting assembly comprises an adjusting frame and an L-shaped motor mounting seat fixed on the adjusting frame, and a motor is fixed on the motor mounting seat; the adjusting frame comprises an adjusting plate and an extension fixing plate connected with the adjusting plate, a guide groove is formed in one side, facing the side fixing plate, of the adjusting plate, a T-shaped guide block matched with the guide groove in size is arranged at a corresponding position of the side fixing plate, a second adjusting screw hole for an adjusting screw to penetrate through is formed in the position of the guide groove, the motor mounting seat is fixed to the upper side of the extension fixing plate, and a smooth transition circular arc coaxial with an output shaft of the motor is arranged on the lower side of the extension fixing plate;
the rotating assembly comprises a vertical rotating vertical plate and a horizontal supporting plate, the supporting plate is arranged on one side, away from the adjusting assembly, of the vertical rotating plate, two fixing grooves are formed in the upper side of the supporting plate, a laser ranging sensor is arranged in each fixing groove in a bilateral symmetry mode, and a measuring opening corresponding to the position of a transmitter of the laser ranging sensor is formed in one side, away from the vertical rotating plate, of each fixing groove.
2. The dynamic wear measuring device for the grooved rail of the tramway as claimed in claim 1, wherein the side of the electrical control slot away from the fixing clamping plate is provided with wire holes corresponding to the position and the number of the power supply and the PLC, and a cover plate is arranged on the top surface of the electrical control slot and is hinged with one side surface of the electrical control slot.
3. The dynamic measurement device for the wear loss of the grooved steel rail of the tramcar as claimed in claim 1, wherein the opposing faces of the movable clamping plate and the second fixed clamping plate are both fixed with elastic anti-slip pads, and the opposing faces of the two elastic anti-slip pads are both provided with corrugated grooves which are uniformly arranged, so as to ensure that when the fixed clamping plate and the movable clamping plate fix the whole device on the tramcar, a good damping effect is provided for the whole device, and the data is true and reliable.
4. The dynamic wear measuring device of the grooved rail of the tram as claimed in claim 1, wherein the rotating vertical plate is fixedly connected with the output shaft of the motor, a rotating guide plate is fixed at the lower end of the rotating vertical plate, and the rotating guide plate is an arc-shaped plate which is located on the side of the rotating vertical plate facing the motor and is coaxial with the output shaft of the motor.
5. The dynamic wear measuring device for the grooved steel rails of the tramcar as claimed in claim 1, wherein the adjusting plate of the adjusting bracket has two setting modes, namely a horizontal setting and a vertical setting.
6. The dynamic wear measuring device for the grooved rail of the tram as claimed in claim 5, wherein when the adjusting plate is horizontally disposed, the side fixing plate and the extension fixing plate are horizontally disposed, and the first fixing clip and the second fixing clip are vertically disposed at two ends of the side fixing plate.
7. The dynamic wear measuring device for the grooved rail of the tram as claimed in claim 5, wherein when the adjusting plate is vertically disposed, the side fixing plate is vertically disposed, the extension fixing plate is horizontally disposed, and the first fixing clip and the second fixing clip are horizontally disposed at the upper and lower ends of the side fixing plate.
8. The dynamic wear measuring device for the grooved rail of the tram as claimed in claim 1, wherein the adjusting plate is provided with two second adjusting screw holes and two adjusting screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011102154.3A CN112278007B (en) | 2020-10-15 | 2020-10-15 | Vehicular dynamic measuring device for groove-shaped steel rail abrasion loss of tramcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011102154.3A CN112278007B (en) | 2020-10-15 | 2020-10-15 | Vehicular dynamic measuring device for groove-shaped steel rail abrasion loss of tramcar |
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| Publication Number | Publication Date |
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| CN112278007A CN112278007A (en) | 2021-01-29 |
| CN112278007B true CN112278007B (en) | 2021-04-23 |
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| CN202011102154.3A Active CN112278007B (en) | 2020-10-15 | 2020-10-15 | Vehicular dynamic measuring device for groove-shaped steel rail abrasion loss of tramcar |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2683310Y (en) * | 2004-03-26 | 2005-03-09 | 比亚迪股份有限公司 | Clamp for linear cutting machine |
| CN203443587U (en) * | 2013-07-18 | 2014-02-19 | 苏州华兴致远电子科技有限公司 | Clamping support and catenary image collection device provided with support |
| CN105935851B (en) * | 2016-06-02 | 2017-07-14 | 广东工业大学 | A kind of fixture for blade Repair gene |
| CN205919794U (en) * | 2016-07-20 | 2017-02-01 | 成都唐源电气股份有限公司 | Rail ripples grinds detection device based on machine vision |
| CN106092174A (en) * | 2016-08-24 | 2016-11-09 | 北京主导时代科技有限公司 | A kind of carrier localization method based on sensor technology and positioner |
| DE102017008931A1 (en) * | 2016-10-06 | 2018-04-12 | Sew-Eurodrive Gmbh & Co Kg | Rail system, comprising at least one rail part, a slot waveguide and a movably arranged in the rail direction vehicle |
| CN207358321U (en) * | 2017-09-13 | 2018-05-15 | 安徽恒信通智能科技有限公司 | A kind of integrated circuit boards solder adjusts frock |
| CN109305188B (en) * | 2018-09-18 | 2022-04-12 | 中国北方车辆研究所 | Servo tracking type steel rail profile corrugation detection system |
| CN210363864U (en) * | 2019-07-05 | 2020-04-21 | 中车资阳机车有限公司 | Track wave wearing and tearing detection device mounting structure |
| CN211491231U (en) * | 2020-01-20 | 2020-09-15 | 刘妩媚 | Clamping device for communication equipment maintenance |
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