CN102620923A - Indoor test detector for wind-resistant anti-slip brake of port crane - Google Patents

Indoor test detector for wind-resistant anti-slip brake of port crane Download PDF

Info

Publication number
CN102620923A
CN102620923A CN2012101043984A CN201210104398A CN102620923A CN 102620923 A CN102620923 A CN 102620923A CN 2012101043984 A CN2012101043984 A CN 2012101043984A CN 201210104398 A CN201210104398 A CN 201210104398A CN 102620923 A CN102620923 A CN 102620923A
Authority
CN
China
Prior art keywords
bogie frame
wind
horizontal
basic platform
oil cylinder
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
Application number
CN2012101043984A
Other languages
Chinese (zh)
Inventor
吴峰崎
汤晓英
姚文庆
许海翔
刘华
周建波
李振林
梅水麟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Special Equipment Supervision and Inspection Technology Institute
Original Assignee
Shanghai Special Equipment Supervision and Inspection Technology Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Special Equipment Supervision and Inspection Technology Institute filed Critical Shanghai Special Equipment Supervision and Inspection Technology Institute
Priority to CN2012101043984A priority Critical patent/CN102620923A/en
Publication of CN102620923A publication Critical patent/CN102620923A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses an indoor test detector for a wind-resistant anti-slip brake of a port crane, which comprises a base platform, a test bed frame, vertical loading cylinders, a gravity transfer box, a bogie frame, a wheel set, a steel rail and a horizontal thrust cylinder, wherein the vertical loading cylinders are fixed below a beam, the lower ends of the vertical loading cylinders are connected with the gravity transfer box, the lower end of the gravity transfer box is connected with the middle of the upper portion of the bogie frame through a hinged shaft, and the horizontal thrust cylinder is mounted on the base platform, is positioned on one side of the test bed frame and is connected to the bottom of the middle of the bogie frame through a horizontal push rod. The indoor test detector is capable of simulating wheel pressure and the horizontal force borne by the bogie frame indoors under the action of movement bearing and wind load of the port crane, and is capable of simultaneously detecting wind-resistant anti-slip capacity of wind-resistant anti-slip brake series products of the port crane, and the indoor test detector has the advantages of accuracy in test and simplicity and convenience in operation.

Description

The shop experiment pick-up unit of portal crane wind resistance servo stabiliser
Technical field
The present invention relates to a kind of experiment detection device of portal crane wind resistance servo stabiliser, particularly relate to the shop experiment pick-up unit of a kind of portal crane wind resistance servo stabiliser (windproof iron Wedge brake of power hydraulic pressure formula and fluid pressure type rim brake and fluid pressure type top rail machine, rail clamping device).
Background technology
Portal crane can make whole crane wheel move along orbital direction under strong gusts of wind or strong storm effect, moves with the back crane that rolls in case wheel produces slippage, and crane derailing will take place and serious personal property casualty accident such as tumble.Advanced wind resistance non-skid braking apparatus such as windproof iron Wedge brake of novel power hydraulic pressure formula (being called for short windproof iron Wedge brake) and fluid pressure type rim brake (abbreviation rim brake) and fluid pressure type top rail machine, rail clamping device had been installed on portal crane traveling mechanism of the larger traveller chassis group in recent years, good windproof antiskid effect had been played in fitful wind and the attack of strong storm resisted more than the force 7 wind power.Because portal crane physical dimension is tall and big; The manufacturer and the harbour user of present windproof iron Wedge brake and rim brake product once did some harbour site tests; Promptly utilize large-scale towing vehicle to pull whole crane (under windproof iron Wedge brake wedge top harbour orbital plane or the rim brake clamping wheel situation); Produce slippage until the crane wheel; Detect and calculate the size of the wheelslip power that crane deadweight wheel load causes then through pulling force sensor, but test is detected at the scene that can't carry out the crane wind resistance skid resistance under strong gusts of wind or strong storm effect situation.At present manufacturer lacks the dedicated experiments device that windproof iron Wedge brake and rim brake and fluid pressure type top rail machine, rail clamping device properties of product are carried out indoor check.
Summary of the invention
Technical matters to be solved by this invention provides a kind of at indoor wheel wheel load and the suffered horizontal force of bogie frame that can simulate under portal crane motion load-bearing and the wind load action, and can detect the performance test such as windproof anti-slide performance of portal crane wind resistance servo stabiliser (windproof iron Wedge brake and rim brake and fluid pressure type top rail machine, rail clamping device) series of products and the test unit of type approval test performance simultaneously.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of shop experiment pick-up unit of portal crane wind resistance servo stabiliser is characterized in that: comprise basic platform, test bed framework, vertical loading oil cylinder, weight transfer casing, bogie frame, set of wheels, rail and horizontal thrust oil cylinder; Said rail is tiled on the basic platform; Said test bed framework by crossbeam, apportion both sides and lower end through hinge said basic platform is installed, the upper end constitutes through four root posts that hinge supports said crossbeam;
Said vertical loading oil cylinder is fixed on the crossbeam below, and its lower end connects the weight transfer casing, and said weight transfer casing lower end is connected through hinge and bogie frame top are middle, and said bogie frame bottom is provided with set of wheels; Set of wheels is positioned on the rail, and said horizontal thrust oil cylinder is installed in and is positioned at test bed framework one side on the basic platform, and it is connected to the bogie frame central bottom through horizontal push.
In embodiment of the present invention, said gravity load cylinder has 3; Said horizontal push has two bifurcateds, lays respectively at the vehicle wheel component both sides.
Turn on one's side for guaranteeing that the bogie frame motion does not instead give birth to squint, said basic platform is fixed with the side supports that is positioned at the bogie frame both sides, is provided with the side roll with the bogie frame contacts side surfaces in the said side supports.
Because the thrust of horizontal thrust oil cylinder is very big during test, for guaranteeing the bogie frame motion steadily, do not squint, be fixed with the guide rail that is positioned at the horizontal push both sides on the said basic platform, said horizontal push both sides are provided with the side roll that is positioned at said guide rail.
Adopt technique scheme; The present invention can be at wheel wheel load under motion load-bearing of lab simulation portal crane and the wind load action and the suffered horizontal force of bogie frame; And detect the technical feature of portal crane wind resistance servo stabiliser (windproof iron Wedge brake and rim brake), fluid pressure type top rail machine, rail clamping device product; Easy and simple to handle, data are reliable, save the man power and material.
Description of drawings
Below in conjunction with accompanying drawing and embodiment to the present invention be elaborated-
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the side sectional view of Fig. 2.
Embodiment
As depicted in figs. 1 and 2; The shop experiment pick-up unit of portal crane wind resistance servo stabiliser of the present invention comprises basic platform 101, test bed framework 102,3 vertical loading oil cylinders 6, weight transfer casing 7, bogie frame 8, set of wheels 81, rail 21 and horizontal thrust oil cylinders 2.
Wherein, rail 21 is tiled on the basic platform 101; Test bed framework 102 is made up of crossbeam 5, four root posts 3, wherein four root posts, 3 apportion both sides and lower end through hinge be installed on the basic platform 101, the upper end connects the two ends support crossbeam 5 through hinge.
3 vertical loading oil cylinders 6 are fixed on crossbeam 5 belows, and its lower end connects weight transfer casing 7, then are connected through hinge and bogie frame 8 tops are middle in the middle of weight transfer casing 7 lower ends.81 bottoms that are installed in bogie frame 8 of set of wheels.Set of wheels 81 is positioned on the rail 21, and the right ends portion of set of wheels 81 tops is equipped with windproof iron Wedge brake interface and rim brake interface respectively, is respectively applied for windproof iron Wedge brake and rim brake are installed.Horizontal thrust oil cylinder 2 is positioned at test bed framework one side, and the one of which end is installed on the cylinder bracket 1 on the basic platform 101, and the other end then is connected to bogie frame 8 central bottom through the horizontal push 22 with bifurcated.The gravity of vertical loading oil cylinder 6 simulation cranes affacts on vehicle wheel frame 8 and the set of wheels 81 through bearing pin, makes the wheel load of two wheels impartial.
Turn on one's side for guaranteeing that the bogie frame motion does not instead give birth to squint, on basic platform 101, also be fixed with the side supports 103 that is positioned at bogie frame 8 both sides, be provided with side roll 104 in this side supports 103 with bogie frame 8 contacts side surfaces.
Because the thrust of horizontal thrust oil cylinder is very big during test; For guaranteeing bogie frame 8 motions steadily; Do not squint, on basic platform 101, be fixed with the guide rail 23 that is positioned at horizontal push 22 both sides, and horizontal push 22 both sides are provided with the side roll 24 that is positioned at guide rail 23.
Horizontal thrust oil cylinder 2 cooperates horizontal push 22 and guide rail 23 to make that the compressing cylinder motion is balanced, and can bear horizontal counter-force.When the horizontal force of simulation wind reaches when vehicle wheel frame is moved, can make to connect support and load the displacement that produces small distance between crossbearer.In set of wheels 81 lower side the displacement transducer of monitoring wheel sliding motion is housed.
The Hydraulic Station of hydraulic system is by a motor-driven oil pump feed; Hydraulic control components such as solenoid directional control valve, pressure transducer, surplus valve are set above hydraulic reservoir; Fluid pressure line between Hydraulic Station and the test-bed adopts hard tube to connect, and adopts flexible pipe to be connected to each hydraulic jack then.
The hydraulic oil pump of two clip wheel devices leans on the spring brake application in process of the test, hydraulic pressure declutches.The action of mentioning of windproof iron wedge is carried out by electric hydaulic pusher (hydraulic push rod).
The action of mentioning of windproof iron Wedge brake is carried out by electric hydaulic pusher (hydraulic push rod).Lean on the spring brake application when hydraulic jack of rim brake is test, hydraulic pressure declutches.
The processing of manipulation of the present invention and test figure is by ((PLC) is that electrical control and the data acquisition processing system that electrical control cubicles, industrial computer, the operator's console of core formed accomplished, and is provided with monitored picture with Programmable Logic Controller.At first motor adopts the direct start-up control of contactor; Make in the hydraulic system vertical loading oil cylinder produce pressure and vertically act on bogie frame, the horizontal thrust of horizontal thrust oil cylinder acts on the outrigger of ride frame afterwards, when horizontal thrust overcomes the resistance that detent produces; Set of wheels begins to slide; Wheel produces displacement, and displacement signal is sent into PLC through displacement transducer, and signal is after treatment through Industrial Control Computer output; When the displacement value of reaching capacity, bogie frame touches limit switch, and limit signal is admitted to PLC shuts down the motor dead electricity; Valve-off; Each oil cylinder working-pressure is sent into PLC in real time through pressure transducer in this process, and exports through Industrial Control Computer, and carries out data acquisition, processing by industrial computer; Finally on display, show test figure chart and monitor message, and printable.
During test; Windproof iron Wedge brake wedge peaks at (or rim brake clamping wheel side) on the rail level; Vertical loading oil cylinder piston bar produces normal thrust (simulation crane wheel wheel load value), and the Programmable Logic Controller of vertical loading cylinder thrust value signal being delivered to electrical control and data acquisition processing system through the pressure transducer of vertical loading oil cylinder control loop and pressure unit is (in (PLC).Horizontal thrust oil cylinder pushing tow produces horizontal thrust (horizontal force that simulated wind load thrust and bogie frame are suffered) simultaneously, and is sent in the Programmable Logic Controller (PLC) through pressure unit by the pressure sensor signal in the horizontal thrust oil cylinder control loop.Promote the ride frame at the horizontal thrust oil cylinder, produce in the slipping displacement transducer acquired signal until wheel.Signals such as vertical loading oil cylinder that test records and horizontal thrust oil cylinder are through control stand (host computer) acquisition process; Show or print windproof anti-slide performance and the iron wedge friction block material and the friction factor of windproof iron Wedge brake to be detected; The test figure and the trial curve of technical features such as the clamping force of rim brake, windproof anti-slide performance, friction plate material and friction factor, thus check the q&r of windproof iron Wedge brake and rim brake product.
The present invention is used to simulate portal crane when receiving the invasion and attack of strong gusts of wind or strong storm, performance detection such as wind resistance servo stabiliser wind resistance skid resistance, and its major function has:
1, wheel wheel load and the suffered horizontal force of bogie frame under simulation crane motion load-bearing and the wind load action;
2, the performance of windproof iron Wedge brake (windproof anti-slide performance, iron wedge friction block material and friction factor thereof etc.) test, type approval test (containing parts fatigue strength, permanance and fail-test) and factory inspection;
3, the performance of rim brake (parameters such as clamping force, windproof anti-slide performance, friction plate material and friction factor thereof) test, type approval test (zero fatigue strength spare, permanance and fail-test) and factory inspection.
4, fluid pressure type top rail machine, rail clamping device test, type approval test (zero fatigue strength spare, permanance and fail-test) and factory inspection.
Technical performance index of the present invention:
1, wheel series (main type: cast steel; Wheel diameter: φ 600-φ 900mm);
2, maximum 120 tons of the wheel loads that allow, maximum 240 tons of simulated gravity cylinder component power output;
3, detect maximum 27 tons of power charging assembly power output;
4, the clamping force of rim brake (50-365-560kN);
5, hydraulic system working pressure >=24Mpa.
Through above-mentioned detailed description; Can find out that the present invention can be at wheel wheel load under motion load-bearing of lab simulation portal crane and the wind load action and the suffered horizontal force of bogie frame; And detect the technical feature of portal crane wind resistance servo stabiliser (windproof iron Wedge brake and rim brake), fluid pressure type top rail machine, rail clamping device product; Easy and simple to handle, data are reliable, save the man power and material.
But; Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.

Claims (4)

1. the shop experiment pick-up unit of a portal crane wind resistance servo stabiliser is characterized in that: comprise basic platform, test bed framework, vertical loading oil cylinder, weight transfer casing, bogie frame, set of wheels, rail and horizontal thrust oil cylinder; Said rail is tiled on the basic platform; Said test bed framework by crossbeam, apportion both sides and lower end through hinge said basic platform is installed, the upper end constitutes through four root posts that hinge supports said crossbeam;
Said vertical loading oil cylinder is fixed on the crossbeam below, and its lower end connects the weight transfer casing, and said weight transfer casing lower end is connected through hinge and bogie frame top are middle, and said bogie frame bottom is provided with set of wheels; Set of wheels is positioned on the rail, and said horizontal thrust oil cylinder is installed in and is positioned at test bed framework one side on the basic platform, and it is connected to the bogie frame central bottom through horizontal push.
2. the shop experiment pick-up unit of portal crane wind resistance servo stabiliser according to claim 1 is characterized in that: said gravity load cylinder has 3; Said horizontal push has two bifurcateds, lays respectively at the vehicle wheel component both sides.
3. the shop experiment pick-up unit of portal crane wind resistance servo stabiliser according to claim 1; It is characterized in that: said basic platform is fixed with the side supports that is positioned at the bogie frame both sides, is provided with the side roll with the bogie frame contacts side surfaces in the said side supports.
4. the shop experiment pick-up unit of portal crane wind resistance servo stabiliser according to claim 3; It is characterized in that: be fixed with the guide rail that is positioned at the horizontal push both sides on the said basic platform, said horizontal push both sides are provided with the side roll that is positioned at said guide rail.
CN2012101043984A 2012-04-11 2012-04-11 Indoor test detector for wind-resistant anti-slip brake of port crane Pending CN102620923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101043984A CN102620923A (en) 2012-04-11 2012-04-11 Indoor test detector for wind-resistant anti-slip brake of port crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101043984A CN102620923A (en) 2012-04-11 2012-04-11 Indoor test detector for wind-resistant anti-slip brake of port crane

Publications (1)

Publication Number Publication Date
CN102620923A true CN102620923A (en) 2012-08-01

Family

ID=46560973

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101043984A Pending CN102620923A (en) 2012-04-11 2012-04-11 Indoor test detector for wind-resistant anti-slip brake of port crane

Country Status (1)

Country Link
CN (1) CN102620923A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104849077A (en) * 2015-04-02 2015-08-19 苏州中州安勃起重有限公司 Windproof sliding simulation system for crane under circumstance of deviation of center of gravity
CN104849076A (en) * 2015-04-02 2015-08-19 苏州中州安勃起重有限公司 Wind resistance and skid resistance test system for crane
CN104860221A (en) * 2015-04-02 2015-08-26 苏州中州安勃起重有限公司 Wind sliding resistant retarding braking simulation device for crane
CN104880331A (en) * 2015-04-02 2015-09-02 苏州中州安勃起重有限公司 Crane wind load simulation test use method
CN105236271A (en) * 2015-11-09 2016-01-13 江苏省特种设备安全监督检验研究院 Comprehensive laboratory examination device for anti-wind brake product of crane
CN106768587A (en) * 2017-03-09 2017-05-31 江苏省特种设备安全监督检验研究院 Device and method for testing static braking force of low-speed shaft brake energy efficiency test
CN110186746A (en) * 2019-04-22 2019-08-30 浙江大学 A kind of holding laterally and axially vertical structural test loading device and test method
CN110371855A (en) * 2019-08-16 2019-10-25 福建省特种设备检验研究院 The anti-fitful wind energy force checking device of portal crane and its detection method
CN110440971A (en) * 2019-09-10 2019-11-12 广东省特种设备检测研究院湛江检测院 A kind of anti-skidding power device for fast detecting of the rail-mounted loading mechanization in harbour
CN111562098A (en) * 2020-05-19 2020-08-21 江苏省特种设备安全监督检验研究院 Wheel-side brake simulation test bench and test method thereof
CN115901300A (en) * 2022-10-24 2023-04-04 江苏省特种设备安全监督检验研究院 Device and method for monitoring wind-proof and skid-resistant capability of crane in working state

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1632491A (en) * 2004-12-28 2005-06-29 武汉理工大学 Indoor test and detection device for wind proof safety brake of port crane
CN101000292A (en) * 2006-12-15 2007-07-18 清华大学 Large 3D multifunction soil tester
CN202119623U (en) * 2011-06-13 2012-01-18 长春机械科学研究院有限公司 Alternate load joint bearing life testing machine
CN202676430U (en) * 2012-04-11 2013-01-16 上海市特种设备监督检验技术研究院 Indoor test detector for wind-resistant anti-slip brake of port crane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1632491A (en) * 2004-12-28 2005-06-29 武汉理工大学 Indoor test and detection device for wind proof safety brake of port crane
CN101000292A (en) * 2006-12-15 2007-07-18 清华大学 Large 3D multifunction soil tester
CN202119623U (en) * 2011-06-13 2012-01-18 长春机械科学研究院有限公司 Alternate load joint bearing life testing machine
CN202676430U (en) * 2012-04-11 2013-01-16 上海市特种设备监督检验技术研究院 Indoor test detector for wind-resistant anti-slip brake of port crane

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104849076A (en) * 2015-04-02 2015-08-19 苏州中州安勃起重有限公司 Wind resistance and skid resistance test system for crane
CN104860221A (en) * 2015-04-02 2015-08-26 苏州中州安勃起重有限公司 Wind sliding resistant retarding braking simulation device for crane
CN104880331A (en) * 2015-04-02 2015-09-02 苏州中州安勃起重有限公司 Crane wind load simulation test use method
CN104860221B (en) * 2015-04-02 2017-10-27 江苏省特种设备安全监督检验研究院 Crane wind-resisting sliding retarding braking analogue means
CN104849077A (en) * 2015-04-02 2015-08-19 苏州中州安勃起重有限公司 Windproof sliding simulation system for crane under circumstance of deviation of center of gravity
CN105236271A (en) * 2015-11-09 2016-01-13 江苏省特种设备安全监督检验研究院 Comprehensive laboratory examination device for anti-wind brake product of crane
CN106768587A (en) * 2017-03-09 2017-05-31 江苏省特种设备安全监督检验研究院 Device and method for testing static braking force of low-speed shaft brake energy efficiency test
CN110186746B (en) * 2019-04-22 2024-03-26 浙江大学 Structure test loading device and test method for keeping lateral direction and axial direction vertical
CN110186746A (en) * 2019-04-22 2019-08-30 浙江大学 A kind of holding laterally and axially vertical structural test loading device and test method
CN110371855A (en) * 2019-08-16 2019-10-25 福建省特种设备检验研究院 The anti-fitful wind energy force checking device of portal crane and its detection method
CN110371855B (en) * 2019-08-16 2024-02-09 福建省特种设备检验研究院 Port crane wind gust prevention capability detection device and detection method thereof
CN110440971A (en) * 2019-09-10 2019-11-12 广东省特种设备检测研究院湛江检测院 A kind of anti-skidding power device for fast detecting of the rail-mounted loading mechanization in harbour
CN110440971B (en) * 2019-09-10 2024-05-03 广东省特种设备检测研究院湛江检测院 Port rail-mounted mechanical anti-skid force rapid detection device
CN111562098A (en) * 2020-05-19 2020-08-21 江苏省特种设备安全监督检验研究院 Wheel-side brake simulation test bench and test method thereof
CN111562098B (en) * 2020-05-19 2021-10-22 江苏省特种设备安全监督检验研究院 Wheel-side brake simulation test bench and test method thereof
CN115901300A (en) * 2022-10-24 2023-04-04 江苏省特种设备安全监督检验研究院 Device and method for monitoring wind-proof and skid-resistant capability of crane in working state
CN115901300B (en) * 2022-10-24 2023-10-24 江苏省特种设备安全监督检验研究院 Device and method for monitoring wind-proof and anti-skid capacity of crane in working state

Similar Documents

Publication Publication Date Title
CN102620923A (en) Indoor test detector for wind-resistant anti-slip brake of port crane
CN1296686C (en) Indoor test and detection device for wind proof safety brake of port crane
CN202075182U (en) Steel wire rope drawing clamp and horizontal steel wire rope drawing test machine thereof
CN201688976U (en) Tractor suspender lifting capability test bed
CN104502015B (en) The detection method of drum reaction type lift type automobile axle load brake composite inspection table
CN102564777B (en) Centering adjustment method for wheel sets of locomotive test stand and traction force meter stand thereof
CN105236271B (en) Comprehensive laboratory examination device for anti-wind brake product of crane
CN102589902B (en) Supporting leg tester
CN201882628U (en) Handling device for bearing radial play measurer
CN105035903A (en) Elevator load test device and test method thereof
CN201993239U (en) Road condition testing machine of two-wheel motorcar
CN108426671B (en) Calibrating device for brake inspection platform
CN202676430U (en) Indoor test detector for wind-resistant anti-slip brake of port crane
CN203024987U (en) Railway vehicle micro-controlled braking performance test bench
CN102814635A (en) Dismantling and assembling device for large-sized bearing box
CN201000399Y (en) Device for testing performance of jack
CN201364237Y (en) Tension-torsion comprehensive tester
CN206161222U (en) Rack internal resistance measuring device based on counter -force type cylinder brake test bench
CN105784390B (en) A kind of roller bearing adapter stabilizer bar unstability/braking compbined test TT&C system and test method
CN203534840U (en) Tower-type air winch performance test and experiment platform
CN203443865U (en) Multifunctional pressure shear testing machine
CN201025465Y (en) Deceleration top test device
CN205157217U (en) Test device in indoor simulation hoist anti -wind non -skid property
CN206531644U (en) Vehicle side slipping testing stand
CN202048978U (en) Automatic test instrument

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120801