CN103018034A - Car coupler coupling test bed - Google Patents
Car coupler coupling test bed Download PDFInfo
- Publication number
- CN103018034A CN103018034A CN2012105697484A CN201210569748A CN103018034A CN 103018034 A CN103018034 A CN 103018034A CN 2012105697484 A CN2012105697484 A CN 2012105697484A CN 201210569748 A CN201210569748 A CN 201210569748A CN 103018034 A CN103018034 A CN 103018034A
- Authority
- CN
- China
- Prior art keywords
- hitch
- testing table
- plc
- control system
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a car coupler coupling test bed which comprises a control system, a hydraulic system and a mechanical portion. The mechanical portion comprises a base, a fixed mounting device is arranged at one end of the base, a movable mounting device is arranged at the other end of the base, each of the two mounting device fixes a car coupler, an oil cylinder assembly connected with the hydraulic system is further mounted on the base, a piston rod of the oil cylinder assembly is connected with the movable mounting device, and a pull pressure sensor is arranged at the front end of the piston rod and connected with a PLC (programmable logic controller) of the control system. Besides, the fixed mounting device comprises a car coupler fixing frame and a displacement device mounted on the car coupler fixing frame, the car coupler is mounted on the displacement device, and a displacement sensor is further arranged on the displacement device and connected with the PLC of the controller. The car coupler coupling test bed achieves functional test for various performance indexes of car couplers, and the functional test includes simulation of normal-state coupling, simulation of static coupling of transverse displacement, simulation of static coupling of vertical displacement, air tightness test of air hose couplings and the like.
Description
Technical field
The present invention relates to rail vehicle coupler buffering device checking experiment field, specifically, relate to a kind of hitch and even hang testing table.
Background technology
Coupler buffering device is most important device in the car end connected system, and is in most important parts ranks in vehicle mounting.Acting as of coupler buffering device: (1) mainly realizes the various connections between the vehicle, such as mechanical connection, wind connection, electrical connection etc.; (2) realize buffer action between the vehicle, prevent from hanging or in service car body being damaged connecting; (3) stationarity of the motion between the realization vehicle improves the comfort level of vehicle operating.
For guaranteeing the quality and performance of coupler buffering device, need to carry out the compbined test checking of various aspects of performance, comprise that the simulation normal condition connect to be hung, the static state of the simulate for lateral changing of the relative positions connect hang, the static state of the vertical changing of the relative positions of simulation connects and hangs and air hose coupling air-tight test etc., verifies the main performance of coupler draft gear with this.
Hitch of the present invention connects to be hung testing table and just is based on static state that designed one of above technical requirement can simulate actual condition and connects and hang testing table.
Summary of the invention
The present invention is directed to existing rail vehicle coupler buffering device, provide a kind of hitch to connect and hung testing table, be used for to realize that the quality and performance after the coupler buffering device maintenance detects, comprise the simulation normal condition connect hang, the static state of the simulate for lateral changing of the relative positions connect hang, the static state of the vertical changing of the relative positions of simulation connects and hangs and air hose coupling air-tight test etc.
Technical scheme of the present invention is: a kind of hitch connects hangs testing table, this testing table comprises control system, hydraulic system and mechanical part, mechanical part comprises base, one end of base is provided with secure mounting arrangements, the other end is provided with mobile erecting device, two erecting devices are fixed respectively a cover hitch, the oil cylinder that is connected with hydraulic system also is installed on the base to be formed, the piston rod that this oil cylinder forms is connected with mobile erecting device, the piston rod front end is provided with pull pressure sensor, and this pull pressure sensor is connected with the PLC of control system; Secure mounting arrangements comprises hitch fixed mount and the changing of the relative positions device that is installed on the hitch fixed mount, and hitch is installed on the changing of the relative positions device, is provided with displacement transducer on the changing of the relative positions device, and this displacement transducer is connected with the PLC of control system.
Preferably, be provided with on the base on the heavily loaded line slide rail, be provided with the locating device that the hitch fixed mount is installed on the heavily loaded line slide rail, a side of hitch fixed mount is provided with positive stop on the heavily loaded line slideway; Described locating device comprises location-plate and register pin, and location-plate is installed on the heavily loaded line slide rail, and the hitch fixed mount is installed on the location-plate by register pin.
Preferably, vertical adjusting part is installed on the hitch fixed mount, changing of the relative positions device is installed on vertical adjusting part.
Preferably, changing of the relative positions device comprises reductor, leading screw and the slide that is connected with reductor, and slide is installed on the leading screw by screw, and can move along leading screw; Be provided with displacement transducer on the slide, this displacement transducer is connected with the PLC of control system.
Preferably, slide comprises vertical adjusting integration plate and lateral adjustments integration plate, and the lateral adjustments integration plate is installed on the vertical adjusting integration plate.
Preferably, mobile erecting device comprises travelling car and the hitch erecting frame that is installed on the travelling car, and travelling car is connected with the piston rod that oil cylinder forms.
Preferably, be provided with the hitch mounting tool on the hitch erecting frame, hitch erecting frame and hitch mount pad junction are provided with double-deck dovetail groove.
Preferably, control system comprises that PLC, industrial computer and the direct supply that is connected with industrial computer, industrial computer machine are connected with display, printer, keyboard and mouse, and PLC is connected with industrial computer by the A/D modular converter.
Preferably, hydraulic system comprises Hydraulic Station, hydraulic pump, variable valve, reversal valve and accumulator, and wherein, reversal valve is used for switching the direction of motion that oil cylinder forms, and accumulator is used for replenishing hitch and connects fast hydraulic fluid flow rate required when hanging; Hydraulic pump adopts duplex gear pump, is used for hitch and connects fast extension; Variable valve has been provided with two groups, is used for regulating needed hydraulic pressure under the different operating modes.
The invention has the beneficial effects as follows: (1) the present invention has realized the functional test to the hitch property indices, comprise that the simulation normal condition connect to be hung, the static state of the simulate for lateral changing of the relative positions connect hang, the static state of the vertical changing of the relative positions of simulation connects and hangs and air hose coupling air-tight test etc.(2) the present invention can check horizontal hunting and the vertical oscillation performance of hitch by changing of the relative positions device, and changes different mount pads and can realize performance test to different hitches.(3) the present invention controls by control system, has realized the robotization of test, has improved test efficiency, has reduced the uncontrollability of manual operation.
Description of drawings
Accompanying drawing 1 is the structural representation of the specific embodiment of the invention.
Accompanying drawing 2 is the vertical view of the specific embodiment of the invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
A kind of hitch connects hangs testing table, this testing table comprises control system, hydraulic system and mechanical part, mechanical part comprises base 1, one end of base 1 is provided with secure mounting arrangements, the other end is provided with mobile erecting device, two erecting devices are fixed respectively a cover hitch 2, the oil cylinder that is connected with hydraulic system also is installed on the base 1 forms 3, the piston rod of this oil cylinder composition 3 is connected with mobile erecting device, the piston rod front end is provided with pull pressure sensor, and this pull pressure sensor is connected with the PLC of control system; Secure mounting arrangements comprises hitch fixed mount 4 and the changing of the relative positions device that is installed on the hitch fixed mount 4, and hitch is installed on the changing of the relative positions device, is provided with displacement transducer on the changing of the relative positions device, and this displacement transducer is connected with the PLC of control system.
In order to adapt to the performance test of different model hitch, and centring property test, be provided with on the above-mentioned base 1 on the heavily loaded line slide rail 5, be provided with the locating device that hitch fixed mount 4 is installed on the heavily loaded line slide rail 5, a side of hitch fixed mount is provided with positive stop 6 on the heavily loaded line slideway 5; Described locating device comprises location-plate 7 and register pin 8, and location-plate 7 is installed on the heavily loaded line slide rail 5, and hitch fixed mount 4 is installed on the location-plate 7 by register pin 8.
Vertical adjusting part 9 is installed on the hitch fixed mount 4, and changing of the relative positions device is installed on vertical adjusting part 9, realizes vertically moving of hitch, and test is hung by the company that finishes different hitches.
Changing of the relative positions device comprises reductor, leading screw and the slide that is connected with reductor, and slide is installed on the leading screw by screw, and can move along leading screw; Be provided with displacement transducer on the slide, this displacement transducer is connected with the PLC of control system.
In order to realize horizontal hunting and the vertical oscillation performance test of hitch in connecting the extension process, above-mentioned slide comprises vertical adjusting integration plate 10 and lateral adjustments integration plate 11, wherein vertical adjusting integration plate 10 is used for the vertical performance test that swings, lateral adjustments integration plate 10 is installed on the vertical adjusting integration plate 11, is used for the performance test of horizontal hunting.
Mobile erecting device comprises travelling car 12 and the hitch erecting frame 13 that is installed on the travelling car 12, and travelling car 12 is connected with the piston rod of oil cylinder composition 3.Promote travelling car 12 by hydraulic system, can be along base 1 transverse shifting, test is hung by the company of finishing.
Be provided with hitch mount pad 14 on the above-mentioned hitch erecting frame 13, hitch erecting frame 13 is provided with double-deck dovetail groove with hitch mount pad 14 junctions.Hitch mount pad 14 can be changed according to different hitches.
Control system comprises that PLC, industrial computer and the direct supply that is connected with industrial computer, industrial computer machine are connected with display, printer, keyboard and mouse, and PLC is connected with industrial computer by the A/D modular converter.
Hydraulic system comprises Hydraulic Station, hydraulic pump, variable valve, reversal valve and accumulator, and wherein, reversal valve is used for switching the direction of motion that oil cylinder forms, and accumulator is used for replenishing hitch and connects fast hydraulic fluid flow rate required when hanging; Hydraulic pump adopts duplex gear pump, is used for hitch and connects fast extension; Variable valve has been provided with two groups, is used for regulating needed hydraulic pressure under the different operating modes.
Principle of work: mount pad can be with respect to the certain distance of the horizontal or vertical movement of hitch erecting frame, thereby make two to harness an animal to a cart before the company of being hooked in hangs, the horizontal or vertical certain distance that staggers of center line, then connect and hang test, even hang in the process of the test, coupler body can swing certain angle with respect to the hitch erecting frame, thereby can check horizontal hunting and the vertical oscillation performance of hitch.
Mobile erecting device is driven by hydraulic system, does rectilinear motion along the orbital simulation vehicle on the base, after two hitch automatic butt, in the situation that do not carry out uncoupling, mobile erecting device counter motion applies certain opposite force (5t), and one checks the coupling performance simulating of hitch.
After hitch even hangs up properly, pass into the air of set pressure in the airduct, pressurize certain hour (5min) after the pressure stability, pressure transducer detects the variation of airduct internal pressure, thereby the sealing property of test air hose coupling, hang together, the uncoupling state, can detect open and close function and the sealing property of autovalve on the hitch.
Utilize testing table operation uncoupling to carry out the uncoupling performance test, by operating manual uncoupling slide fastener, but the manual uncoupling function of test check hitch.
The present invention is provided with mount pad, can detect the automatic centering performance (15 ° in soil) of the maximum horizontal pivot angle (soil 45 °) of gib head and maximum perpendicular pivot angle (6 ° in soil), centralising device, and equipment carries the pivot angle angle measurement unit, native 1 ° of measuring error.
Testing table also is furnished with the steel plate meter ruler, but the length of check measurement hitch, measuring error ± 0.5 mm.
The present invention carries out comprehensive performance test mainly for the hitch after overhauling, and comprising:
(1) normal condition connects the extension test;
(2) static state of the simulate for lateral changing of the relative positions connects the extension test;
(3) static state of the vertical changing of the relative positions of simulation connects the extension test;
(4) automatic or manual uncoupling test;
(5) can detect maximum horizontal, maximum perpendicular pivot angle, the automatic centering performance of gib head;
(6) air hose coupling air-tight test.
Claims (9)
1. a hitch is even hung testing table, it is characterized in that: this testing table comprises control system, hydraulic system and mechanical part, mechanical part comprises base, one end of base is provided with secure mounting arrangements, the other end is provided with mobile erecting device, two erecting devices are fixed respectively a cover hitch, the oil cylinder that is connected with hydraulic system also is installed on the base to be formed, the piston rod that this oil cylinder forms is connected with mobile erecting device, the piston rod front end is provided with pull pressure sensor, and this pull pressure sensor is connected with the PLC of control system; Secure mounting arrangements comprises hitch fixed mount and the changing of the relative positions device that is installed on the hitch fixed mount, and hitch is installed on the changing of the relative positions device, is provided with displacement transducer on the changing of the relative positions device, and this displacement transducer is connected with the PLC of control system.
2. hitch according to claim 1 is even hung testing table, it is characterized in that: be provided with on the base on the heavily loaded line slide rail, be provided with the locating device that the hitch fixed mount is installed on the heavy duty line slide rail, a side of hitch fixed mount is provided with positive stop on the heavily loaded line slideway; Described locating device comprises location-plate and register pin, and location-plate is installed on the heavily loaded line slide rail, and the hitch fixed mount is installed on the location-plate by register pin.
3. hitch according to claim 1 is even hung testing table, and it is characterized in that: vertical adjusting part is installed on the hitch fixed mount, and changing of the relative positions device is installed on vertical adjusting part.
According to claim 1 or 3 described hitches connect and hang testing table, it is characterized in that: changing of the relative positions device comprises reductor, leading screw and the slide that is connected with reductor, and slide is installed on the leading screw by screw, and can move along leading screw; Be provided with displacement transducer on the slide, this displacement transducer is connected with the PLC of control system.
5. hitch according to claim 4 is even hung testing table, and it is characterized in that: slide comprises vertical adjusting integration plate and lateral adjustments integration plate, and the lateral adjustments integration plate is installed on the vertical adjusting integration plate.
6. hitch according to claim 1 is even hung testing table, it is characterized in that: mobile erecting device comprises travelling car and the hitch erecting frame that is installed on the travelling car, and travelling car is connected with the piston rod that oil cylinder forms.
7. hitch according to claim 6 is even hung testing table, and it is characterized in that: be provided with the hitch mounting tool on the hitch erecting frame, hitch erecting frame and hitch mount pad junction are provided with double-deck dovetail groove.
8. hitch according to claim 1 is even hung testing table, it is characterized in that: control system comprises PLC, industrial computer and the direct supply that is connected with industrial computer, the industrial computer machine is connected with display, printer, keyboard and mouse, and PLC is connected with industrial computer by the A/D modular converter.
9. hitch according to claim 1 is even hung testing table, it is characterized in that: hydraulic system comprises Hydraulic Station, hydraulic pump, variable valve, reversal valve and accumulator, wherein, reversal valve is used for switching the direction of motion that oil cylinder forms, and accumulator is used for replenishing hitch and connects fast hydraulic fluid flow rate required when hanging; Hydraulic pump adopts duplex gear pump, is used for hitch and connects fast extension; Variable valve has been provided with two groups, is used for regulating needed hydraulic pressure under the different operating modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105697484A CN103018034A (en) | 2012-12-25 | 2012-12-25 | Car coupler coupling test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105697484A CN103018034A (en) | 2012-12-25 | 2012-12-25 | Car coupler coupling test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103018034A true CN103018034A (en) | 2013-04-03 |
Family
ID=47966893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105697484A Pending CN103018034A (en) | 2012-12-25 | 2012-12-25 | Car coupler coupling test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103018034A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439121A (en) * | 2013-08-07 | 2013-12-11 | 长春轨道客车股份有限公司 | Car coupler counter-force hinge base device |
| CN104008696A (en) * | 2014-05-13 | 2014-08-27 | 柳州铁道职业技术学院 | Motor train unit car coupler buffer device practical training platform |
| CN104198171A (en) * | 2014-09-02 | 2014-12-10 | 南车二七车辆有限公司 | Railway vehicle top operation coupler assembly tester and application method thereof |
| CN104330273A (en) * | 2014-10-23 | 2015-02-04 | 南通市海鸥救生防护用品有限公司 | Detacher test machine |
| CN105300713A (en) * | 2015-11-17 | 2016-02-03 | 西南交通大学 | Six-degree-of-freedom car coupler connection simulator |
| CN105788425A (en) * | 2016-03-08 | 2016-07-20 | 中车青岛四方机车车辆股份有限公司 | Compartment simulating device |
| CN107559264A (en) * | 2017-09-22 | 2018-01-09 | 重庆红江机械有限责任公司 | Accumulator flow experimental rig |
| CN108731934A (en) * | 2018-07-27 | 2018-11-02 | 中车青岛四方车辆研究所有限公司 | Hitch even hangs range test tool and method |
| CN109345880A (en) * | 2017-12-27 | 2019-02-15 | 黄河科技学院 | Computer Experimental Teaching Terrace maintenance device |
| CN109357857A (en) * | 2018-12-04 | 2019-02-19 | 中车青岛四方车辆研究所有限公司 | Hitch even hangs pilot system |
| CN109357858A (en) * | 2018-12-04 | 2019-02-19 | 中车青岛四方车辆研究所有限公司 | Hitch even hangs testing stand |
| CN109357860A (en) * | 2018-12-04 | 2019-02-19 | 中车青岛四方车辆研究所有限公司 | Bend simulation mechanism, hitch even hang testing stand and its pilot system |
| WO2019233335A1 (en) * | 2018-06-04 | 2019-12-12 | 中南大学 | Method for carrying out experiment on railway train coupler |
| CN110595805A (en) * | 2019-10-18 | 2019-12-20 | 资阳中车电气科技有限公司 | Standard electric coupler service life test bed for motor train unit |
| CN111257021A (en) * | 2020-04-03 | 2020-06-09 | 中车青岛四方车辆研究所有限公司 | Hook buffer on-line detection and adjustment equipment, system and method |
| CN112129204A (en) * | 2020-09-24 | 2020-12-25 | 中车大同电力机车有限公司 | Coupler knuckle pin coupling detection device |
| CN112985707A (en) * | 2019-12-16 | 2021-06-18 | 中车唐山机车车辆有限公司 | Automatic car coupler and buffer device air tightness test method |
| CN114112333A (en) * | 2021-05-05 | 2022-03-01 | 武汉铁路职业技术学院 | Portable intelligent car coupler detection device based on Internet of things and detection method thereof |
| CN117108593A (en) * | 2023-10-23 | 2023-11-24 | 莱州兴达液压机械科技有限公司 | Hydraulic mechanical locking oil cylinder simulation test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100235052B1 (en) * | 1996-12-02 | 1999-12-15 | 정몽규 | Endurance tester of hook for towing a vehicle |
| CN201004014Y (en) * | 2007-02-02 | 2008-01-09 | 河北理工大学 | Sealing connection car hook testing table |
| US20090133484A1 (en) * | 2007-11-27 | 2009-05-28 | Ono Sokki Co., Ltd. | Vehicle locking device and vehicle locking method |
| JP2009133484A (en) * | 2007-11-07 | 2009-06-18 | Nitta Moore Co | Resin tube |
| CN202155824U (en) * | 2011-06-20 | 2012-03-07 | 长春轨道客车股份有限公司 | Car coupler seat positioning device |
-
2012
- 2012-12-25 CN CN2012105697484A patent/CN103018034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100235052B1 (en) * | 1996-12-02 | 1999-12-15 | 정몽규 | Endurance tester of hook for towing a vehicle |
| CN201004014Y (en) * | 2007-02-02 | 2008-01-09 | 河北理工大学 | Sealing connection car hook testing table |
| JP2009133484A (en) * | 2007-11-07 | 2009-06-18 | Nitta Moore Co | Resin tube |
| US20090133484A1 (en) * | 2007-11-27 | 2009-05-28 | Ono Sokki Co., Ltd. | Vehicle locking device and vehicle locking method |
| CN202155824U (en) * | 2011-06-20 | 2012-03-07 | 长春轨道客车股份有限公司 | Car coupler seat positioning device |
Non-Patent Citations (3)
| Title |
|---|
| 杨金川等: "密接式车钩试验装置", 《铁道车辆》 * |
| 邓杰等: "密接式车钩综合性能试验台液压系统", 《液压气动与密封》 * |
| 邵立鹏等: "高速动车组密接式车钩连挂试验台的研制", 《铁道车辆》 * |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439121A (en) * | 2013-08-07 | 2013-12-11 | 长春轨道客车股份有限公司 | Car coupler counter-force hinge base device |
| CN104008696A (en) * | 2014-05-13 | 2014-08-27 | 柳州铁道职业技术学院 | Motor train unit car coupler buffer device practical training platform |
| CN104008696B (en) * | 2014-05-13 | 2017-01-04 | 柳州铁道职业技术学院 | EMUs coupler and draft gear practical traning platform |
| CN104198171B (en) * | 2014-09-02 | 2016-10-19 | 南车二七车辆有限公司 | A kind of rolling stock top operation coupler composition assay device and using method thereof |
| CN104198171A (en) * | 2014-09-02 | 2014-12-10 | 南车二七车辆有限公司 | Railway vehicle top operation coupler assembly tester and application method thereof |
| CN104330273A (en) * | 2014-10-23 | 2015-02-04 | 南通市海鸥救生防护用品有限公司 | Detacher test machine |
| CN104330273B (en) * | 2014-10-23 | 2016-09-28 | 南通市海鸥救生防护用品有限公司 | Unhook testing machine |
| CN105300713A (en) * | 2015-11-17 | 2016-02-03 | 西南交通大学 | Six-degree-of-freedom car coupler connection simulator |
| CN105300713B (en) * | 2015-11-17 | 2018-12-21 | 西南交通大学 | Six degree of freedom hitch connects simulator |
| CN105788425A (en) * | 2016-03-08 | 2016-07-20 | 中车青岛四方机车车辆股份有限公司 | Compartment simulating device |
| CN107559264A (en) * | 2017-09-22 | 2018-01-09 | 重庆红江机械有限责任公司 | Accumulator flow experimental rig |
| CN107559264B (en) * | 2017-09-22 | 2019-11-26 | 重庆红江机械有限责任公司 | Accumulator flow experimental rig |
| CN109345880A (en) * | 2017-12-27 | 2019-02-15 | 黄河科技学院 | Computer Experimental Teaching Terrace maintenance device |
| CN109345880B (en) * | 2017-12-27 | 2020-09-11 | 福建旭辰信息科技有限公司 | Computer experiment teaching platform maintenance device |
| WO2019233335A1 (en) * | 2018-06-04 | 2019-12-12 | 中南大学 | Method for carrying out experiment on railway train coupler |
| CN108731934A (en) * | 2018-07-27 | 2018-11-02 | 中车青岛四方车辆研究所有限公司 | Hitch even hangs range test tool and method |
| CN108731934B (en) * | 2018-07-27 | 2024-03-05 | 中车青岛四方车辆研究所有限公司 | Coupler coupling range test tool and method |
| CN109357858A (en) * | 2018-12-04 | 2019-02-19 | 中车青岛四方车辆研究所有限公司 | Hitch even hangs testing stand |
| CN109357860A (en) * | 2018-12-04 | 2019-02-19 | 中车青岛四方车辆研究所有限公司 | Bend simulation mechanism, hitch even hang testing stand and its pilot system |
| CN109357857A (en) * | 2018-12-04 | 2019-02-19 | 中车青岛四方车辆研究所有限公司 | Hitch even hangs pilot system |
| CN110595805A (en) * | 2019-10-18 | 2019-12-20 | 资阳中车电气科技有限公司 | Standard electric coupler service life test bed for motor train unit |
| CN112985707A (en) * | 2019-12-16 | 2021-06-18 | 中车唐山机车车辆有限公司 | Automatic car coupler and buffer device air tightness test method |
| CN112985707B (en) * | 2019-12-16 | 2023-03-21 | 中车唐山机车车辆有限公司 | Automatic car coupler and buffer device air tightness test method |
| CN111257021A (en) * | 2020-04-03 | 2020-06-09 | 中车青岛四方车辆研究所有限公司 | Hook buffer on-line detection and adjustment equipment, system and method |
| CN111257021B (en) * | 2020-04-03 | 2022-04-19 | 中车青岛四方车辆研究所有限公司 | Hook buffer on-line detection and adjustment equipment, system and method |
| CN112129204A (en) * | 2020-09-24 | 2020-12-25 | 中车大同电力机车有限公司 | Coupler knuckle pin coupling detection device |
| CN114112333A (en) * | 2021-05-05 | 2022-03-01 | 武汉铁路职业技术学院 | Portable intelligent car coupler detection device based on Internet of things and detection method thereof |
| CN117108593A (en) * | 2023-10-23 | 2023-11-24 | 莱州兴达液压机械科技有限公司 | Hydraulic mechanical locking oil cylinder simulation test device |
| CN117108593B (en) * | 2023-10-23 | 2024-01-05 | 莱州兴达液压机械科技有限公司 | Hydraulic mechanical locking oil cylinder simulation test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103018034A (en) | Car coupler coupling test bed | |
| CN201004014Y (en) | Sealing connection car hook testing table | |
| CN103358087B (en) | EMUs coupler draft gear repair line and repair method | |
| CN202137350U (en) | On-line weighing system for continuous casting slab | |
| CN202166537U (en) | Cooling nozzle targeting testing device | |
| CN204512069U (en) | The test bed hydraulic control system of energy saving excavator oil hydraulic cylinder | |
| KR20110085610A (en) | Greater oil pressure cylinder test system | |
| CN207036413U (en) | A kind of dual drive hitch even hangs detection means | |
| CN201138296Y (en) | Tri-valve test platform | |
| CN203650351U (en) | Clamping device for detecting automobile fuel spray nozzle | |
| CN103543021A (en) | Portable subway brake system tester | |
| CN101871870B (en) | Semi-automatic steel anvil rating device of resiliometer | |
| CN105910813A (en) | Double-valve test bench | |
| CN107860662A (en) | A kind of large-sized deep water master passively combines wave compensating device total system shore-front-trials method | |
| CN202041260U (en) | Piston type gas flow rate standard device | |
| KR101671125B1 (en) | Performance testing apparatus of hydraulic actuator for turbine of power plant | |
| CN202193596U (en) | Three-dimensional adjusting machine | |
| CN207571593U (en) | A kind of linear motion device | |
| CN202614510U (en) | Function detecting device for height valve of multiple units | |
| CN102589871A (en) | Device for testing relation between flow rate and pressure of pressure regulating valve | |
| CN104176692B (en) | A kind of oil-filling mechanism | |
| CN102519687B (en) | Oil cylinder assembly on-line detection device | |
| CN205101320U (en) | Car calliper leakproofness measurement experiment platform pneumatic control device | |
| CN219573473U (en) | Oil-receiving plug butt-joint disconnection life test bed | |
| CN221006761U (en) | Fatigue test device for components of air brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 266031 Shandong province Qingdao City, Ruichang Road No. 231 Applicant after: Qingdao Sifang Rolling Stock Research Institute Co., Ltd. Address before: 266000 Ruichang Road, Shandong, China, No. 231, No. Applicant before: Qingdao Sifang Rolling Stock Research Institute Co., Ltd. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |