summary of the invention
The object of the invention is to the problems referred to above that exist for CRH type EMU in the time carrying out tubing unit box and hood opening-closing mechanism maintenance, a kind of repair line of piping unit box is provided, this repair line is mainly used in maintenance and the test of CRH2 EMUs tubing unit box-hood opening-closing mechanism, in can be simultaneously tubing unit box and hood opening-closing mechanism being carried out and performance test detect, and can compatible other vehicle tubing unit boxes and maintenance and the test of hood opening-closing mechanism.
Technical scheme of the present invention is: a kind of repair line of piping unit box, this repair line comprises storage unit, maintenance unit, and tubing unit box and the automatic fetching and sending devices of hood opening-closing mechanism, storage unit comprises buffer area to be repaired and repaiies completes buffer area, be respectively used to deposit reparable item and certified products, maintenance unit comprises resolver, maintenance district, assembling district and switching mechanism test site, in resolver, be provided with the disintegration platform that decomposes tubing unit box and hood opening-closing mechanism, maintenance is provided with the inspection worktable that checks tubing unit box and hood opening-closing mechanism parts in district, in assembling district, be provided with the assembling table of assembling tubing unit box and hood opening-closing mechanism, in switching mechanism test site, be provided with tubing unit box and hood opening-closing mechanism test bed, for the performance test of tubing unit box and hood opening-closing mechanism, described testing table comprises control device and mechanical hook-up, mechanical hook-up comprises fitter's bench and air-actuated jaw, fitter's bench comprises work stage body, the vehicle-mounted tubing unit box of simulation is installed in work stage body, the upper surface of work stage body is provided with the air-actuated jaw of full-automatic clamping, control device opens and closes cylinder by the head-shield of solenoid valve and sensor control head cover opening/closing mechanism and tapered end opens and closes cylinder, and the fixture of air-actuated jaw opens and closes cylinder action.
Preferably, air-actuated jaw comprises support, fixture is installed on support and opens and closes cylinder and open and close with fixture the clip that cylinder is connected, and is also provided with safe locking cylinder on support, and this safe locking cylinder is arranged on a side of fixture switching cylinder.
Preferably, the liquid crystal display that control device comprises switch board, is arranged on the industrial computer in switch board and is connected with industrial computer, on switch board, be provided with air compressor machine and source of the gas, fixture is installed in switch board and opens and closes solenoid valve, electronic control pressure reducing valve, open and close valve, pressure transducer and blowdown valve, fixture opens and closes solenoid valve and is all connected with source of the gas with electronic control pressure reducing valve, and is connected with air compressor machine by safety valve.
Preferably, on switch board, be provided with and each valve, sensor, head-shield switching, tapered end switching, fixture degree of tightness and the corresponding hand push button switch of air compressor machine start and stop and manual/auto switch.
Preferably, industrial computer opens and closes solenoid valve and fixture by fixture and opens and closes cylinder and be connected.
Preferably, industrial computer is successively by electronic control pressure reducing valve, open and close valve, pressure transducer and be arranged on head-shield in tubing unit box and open and close solenoid valve and be connected with head-shield switching cylinder.
Preferably, industrial computer is successively by electronic control pressure reducing valve, open and close valve, pressure transducer and be arranged on tapered end in tubing unit box and open and close solenoid valve and be connected with tapered end switching cylinder.
Preferably, buffer area to be repaired is provided with tubing unit box and hood opening-closing mechanism storage rack with repairing to complete in buffer area, for depositing reparable item and the certified products of switching mechanism.
Preferably, the automatic fetching and sending devices of tubing unit box and hood opening-closing mechanism is forklift and cantilever crane.
Beneficial effect of the present invention is: the present invention can carry out comprehensive performance test with tubing unit box and hood opening-closing mechanism to CHR2 type motor train unit and other various motor train unit, also can be to tubing unit box, hood opening-closing mechanism is tested separately, comprise the air-tight test of tubing unit box, action test, the air-tight test of hood opening-closing mechanism, action test etc., and test can adopt automatically and manual two kinds of modes, in the time of dynamic test, automatically Control experiment process, automatically test, automatically preserve test parameters, and analyze judgement, provide stand the test whether result.
embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 3, a kind of repair line of piping unit box, this repair line comprises storage unit, maintenance unit, and tubing unit box and the automatic fetching and sending devices of hood opening-closing mechanism, storage unit comprises buffer area to be repaired and repaiies completes buffer area, be respectively used to deposit reparable item and certified products, maintenance unit comprises resolver, maintenance district, assembling district and switching mechanism test site, in resolver, be provided with the disintegration platform that decomposes tubing unit box and hood opening-closing mechanism, maintenance is provided with the inspection worktable that checks tubing unit box and hood opening-closing mechanism parts in district, in assembling district, be provided with the assembling table of assembling tubing unit box and hood opening-closing mechanism, in switching mechanism test site, be provided with tubing unit box and hood opening-closing mechanism test bed, for the performance test of tubing unit box and hood opening-closing mechanism.Buffer area to be repaired is provided with tubing unit box and hood opening-closing mechanism storage rack with repairing to complete in buffer area, for depositing reparable item and the certified products of switching mechanism.The automatic fetching and sending devices of tubing unit box and hood opening-closing mechanism is forklift and cantilever crane.
Tubing unit box and hood opening-closing mechanism test bed comprise control device and mechanical hook-up, mechanical hook-up comprises fitter's bench and air-actuated jaw, fitter's bench comprises work stage body, the vehicle-mounted tubing unit box of simulation is installed in work stage body, the upper surface of work stage body is provided with the air-actuated jaw of full-automatic clamping, and control device opens and closes the action of the fixture switching cylinder 3 of cylinder 1 and tapered end switching cylinder 2 and air-actuated jaw by the head-shield of solenoid valve and sensor control head cover opening/closing mechanism.Air-actuated jaw comprises support 4, fixture is installed on support 4 and opens and closes cylinder 3 and open and close with fixture the clip 5 that cylinder 3 is connected, and is also provided with safe locking cylinder 6 on support 4, and this safe locking cylinder 6 is arranged on a side of fixture switching cylinder 3.The liquid crystal display that control device comprises switch board, is arranged on the industrial computer in switch board and is connected with industrial computer, fixture is installed in switch board and opens and closes solenoid valve 3, electronic control pressure reducing valve 8, open and close valve 9, pressure transducer 10 and blowdown valve 11, fixture opens and closes solenoid valve 7 and is all connected with source of the gas with electronic control pressure reducing valve 8, and is connected with air compressor machine by safety valve 12.On switch board, be provided with and each valve, sensor, head-shield switching, tapered end switching, fixture degree of tightness and the corresponding hand push button switch of air compressor machine start and stop and manual/auto switch.Industrial computer opens and closes solenoid valve 7 by fixture and is connected with fixture switching cylinder 3; Industrial computer is successively by electronic control pressure reducing valve 8, open and close valve 9, pressure transducer 10 and be arranged on head-shield in tubing unit box and open and close solenoid valve 13 and be connected with head-shield switching cylinder 1; Industrial computer is successively by electronic control pressure reducing valve 8, open and close valve 9, pressure transducer 10 and be arranged on tapered end in tubing unit box and open and close solenoid valve 14 and be connected with tapered end switching cylinder 2.
Principle of work: tubing unit box and hood opening-closing mechanism are transported to buffer area to be repaired by forklift and deposit, and by cantilever crane, tubing unit box and hood opening-closing mechanism are lifted mobile between resolver, maintenance district, assembling district and hood opening-closing mechanism performance test district, and carry out respectively the operations such as parts decomposition, inspection, assembling, test, realize in order and transmitting at inter process, press beat and process implementing maintenance, assembling, and switching mechanism and tubing unit box are carried out to comprehensive performance test, finally enter to repair and complete buffer area and deposit.In maintenance process, carry out message exchange by information terminal.
When test, manual operation and automatic operation.Manual operation operates by corresponding button switch on switch board, and automatic operation moves automatically by respective picture button control industrial computer on display.
(1) manual operation
Before test, first open have time out, open blowdown valve, all inner pressure of air cylinder are let out and are closed for 0 o'clock.Manual/auto switch board switch is got to manually.Press lower clamp and open and close closed electromagnetic valve button, test tubing unit box and hood opening-closing mechanism are fixed on fitter's bench.
1, insulation resistance test
Tubing unit box and hood opening-closing mechanism external circuit are connected to megger test loop.Open Insulation Resistance Tester switch, apply 500V high pressure, start by button, watch the instruments and show insulation resistance registration, it is qualified being greater than 30M Ω, otherwise is defective.
2, hood opening-closing mechanism action test
Press air compressor machine start button, press open and close valve and open button, press head-shield and open button, when head-shield is opened to pilot lamp recording manometer indicating value when bright.Press lower lock head and open and close button, when tapered end is opened the pilot lamp that puts in place recording manometer indicating value when bright.
Adjustable DC power supply is got to manually and adjusted output voltage is DC100V (DC85V-DC115V), opens open and close valve, in the time that manometric indicating value is 0.4MPa, closes open and close valve.Whether press lower lock head and open and close button, open the pilot lamp that puts in place when bright when tapered end, press head-shield and open and close button, see that head-shield is opened to a pilot lamp and whether brightens, record opens and closes button and is opened to a pilot lamp to head-shield and brightens the time from pressing head-shield, see in 5-12S.Press lower lock head and open and close button, when tapered end closure puts pilot lamp in place when bright, again press lower lock head and open and close button, opening when tapered end the pilot lamp that puts in place presses head-shield when bright and opens and closes button, see that head-shield is closed to a pilot lamp and whether brightens, whether record opens and closes button and is closed to a pilot lamp to head-shield and brightens the time from pressing head-shield, see in 5-12S.Press lower lock head and open and close button, until tapered end closure puts in place, pilot lamp brightens.Action test is normal, and it is qualified to be.
Off-test, presses air compressor machine stop button.Press leak valve and open button, until manometric indicating value is pressed leak valve X button while being 0.1MPa.
3, tubing unit box action test
Press air compressor machine start button, adjustable DC power supply is got to manually and adjusted output voltage is DC85V, opens open and close valve, in the time that manometric indicating value is 0.4MPa, closes open and close valve.Press head-shield and open and close button, again press head-shield switching button when head-shield is opened to when a pilot lamp brightens, brighten until head-shield is closed the pilot lamp that puts in place.Action test is normal, and it is qualified to be.Adjustable DC power supply is got to manually and adjusted output voltage is DC115V, again tests by above step.
Off-test, presses air compressor machine stop button.Press leak valve and open button, until manometric indicating value is pressed leak valve X button while being 0.15MPa.
4, tubing unit box air-tight test
Press air compressor machine start button, press open and close valve and open button, in the time that tensimeter indicating value is 0.2MPa, press open and close valve close push button, recording manometer registration, pressurize 5 minutes, observes this registration situation of change, records new registration.
Press open and close valve and open button, in the time that tensimeter indicating value is 0.83MPa, press open and close valve close push button, repeat above operation.
Press open and close valve and open button, in the time that tensimeter indicating value is 1.0MPa, press open and close valve close push button, repeat above operation.
Off-test, presses air compressor machine stop button.
5, hood opening-closing mechanism air-tight test
Press air compressor machine start button, press open and close valve and open button, in the time that tensimeter indicating value is 1.0MPa, press open and close valve close push button, recording manometer registration, pressurize 5 minutes, observes this registration situation of change, records new registration.
Off-test, presses air compressor machine stop button.Press leak valve and open button, until manometric indicating value is pressed leak valve X button while being 0.2MPa.
(2) automatic operation
Before test, first open have time out, open blowdown valve, all inner pressure of air cylinder are let out and are closed for 0 o'clock.Manual/auto switch board switch is got to automatically.Press clamp button, test tubing unit box and hood opening-closing mechanism are fixed on testing table.
1, insulation resistance test
Tubing unit box and hood opening-closing mechanism external circuit are connect to megger test joint.Open Insulation Resistance Tester switch, apply 500V high pressure, start by remote control mouth.On display screen, press host computer " insulation resistance test " start button, whether qualified can, in the demonstration screen display of display, putting and stop, exiting after off-test.
Off-test, closes Insulation Resistance Tester switch.And external circuit is pulled down.
2, hood opening-closing mechanism action test
Adjustable DC power supply is chosen automatically, on the display screen of display, clicked " hood opening-closing mechanism action test " and automatically test.Click starts to test, and after off-test, clicks and stops, exiting.
3, tubing unit box action test
Adjustable DC power supply is chosen automatically, on the display screen of display, clicked " tubing unit box action test " and automatically test.Click starts to test, and after off-test, clicks and stops, exiting.
4, tubing unit box air-tight test
On the display screen of display, clicking " tubing unit box air-tight test " tests automatically.Click starts to test, and after off-test, clicks and stops, exiting.
5, hood opening-closing mechanism air-tight test
On the display screen of display, clicking " hood opening-closing mechanism air-tight test " tests automatically.Click starts to test, and after off-test, clicks and stops, exiting.