CN102539133B - Repair line of piping unit box - Google Patents

Abstract

The invention relates to a piping unit box maintenance line. The maintenance line includes a storage unit, a maintenance unit, and an automatic pick-up and delivery device for the piping unit box and the hood opening and closing mechanism. The storage unit includes a buffer area to be repaired and a repaired buffer area. It is used to store products to be repaired and qualified products. The maintenance unit includes a disassembly area, an inspection area, an assembly area and an opening and closing mechanism test area. There is a disassembly workbench in the disassembly area, an inspection workbench in the inspection area, and an inspection workbench in the assembly area. There is an assembly workbench, and a piping unit box and a hood opening and closing mechanism test bench are set in the opening and closing structure test area for performance tests of the piping unit box and the hood opening and closing mechanism. The present invention can carry out the comprehensive performance test on the piping unit box and the opening and closing mechanism of the head cover for the CHR2 type EMU and other various types of EMUs, and can also test the piping unit box and the opening and closing mechanism of the head cover separately, including the piping unit box Air tightness test, action test, air tightness test of hood opening and closing mechanism, action test, etc.

Description

Piping unit box inspection line

technical field

The invention relates to a railway vehicle maintenance line, in particular to a CRH-type EMU piping unit box maintenance line. the

Background technique

At present, there are four types of high-speed EMUs operating in my country: CRH1, CRH2, CRH3 and CRH5. The technical parameters of the piping unit box and the hood opening and closing mechanism of each model are different. When performing maintenance, different maintenance bases need to be set up. To overhaul the piping unit box and the hood opening and closing mechanism of different models, the piping unit box and the hood opening and closing mechanism can only be tested separately, and the comprehensive performance test cannot be tested at the same time, the maintenance efficiency is low, and the maintenance site occupied is large. Construction costs are high. the

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems existing in the maintenance of the piping unit box and the hood opening and closing mechanism of the CRH high-speed EMU, and to provide a piping unit box inspection line, which is mainly used for the piping of the CRH2 type EMU. The maintenance and test of the unit box-hood opening and closing mechanism can carry out the neutralization performance test on the piping unit box and the hood opening and closing mechanism at the same time, and it is compatible with the maintenance and testing of the piping unit box and the hood opening and closing mechanism of other models . the

The technical solution of the present invention is: a piping unit box maintenance line, the maintenance line includes a storage unit, a maintenance unit, and an automatic pick-up and delivery device for the piping unit box and the hood opening and closing mechanism, the storage unit includes a buffer area to be repaired and a repaired The buffer area is used to store the products to be repaired and the qualified products respectively. The maintenance unit includes the disassembly area, the maintenance area, the assembly area and the opening and closing mechanism test area. In the maintenance area, there is an inspection workbench for inspecting the components of the piping unit box and the hood opening and closing mechanism. In the assembly area, there is an assembly workbench for assembling the piping unit box and the hood opening and closing mechanism. In the opening and closing mechanism test area The piping unit box and the hood opening and closing mechanism test bench are set up for the performance test of the piping unit box and the hood opening and closing mechanism. The test bench includes a control device and a mechanical device, and the mechanical device includes an assembly workbench and a pneumatic fixture , the assembly workbench includes a workbench body, a simulated vehicle-mounted piping unit box is installed in the workbench body, a fully automatic clamping pneumatic clamp is installed on the upper surface of the workbench body, and the control device controls the opening and closing mechanism of the hood through solenoid valves and sensors. The hood opening and closing cylinder, the lock head opening and closing cylinder, and the clamp opening and closing cylinder of the pneumatic clamp operate. the

Preferably, the pneumatic clamp includes a bracket on which a clamp opening and closing cylinder and a clamp connected with the clamp opening and closing cylinder are installed, and a safety locking cylinder is also arranged on the bracket, and the safety locking cylinder is installed on one side of the clamp opening and closing cylinder. side. the

Preferably, the control device includes a control cabinet, an industrial computer installed in the control cabinet, and a liquid crystal display connected with the industrial computer, the control cabinet is provided with an air compressor and an air source, and the control cabinet is equipped with a clamp opening and closing solenoid valve, The electric pressure reducing valve, opening and closing valve, pressure sensor and pressure relief valve, the clamp opening and closing solenoid valve and the electric control pressure reducing valve are all connected to the air source, and connected to the air compressor through the safety valve. the

Preferably, the control cabinet is provided with a manual button switch and a manual/automatic switch corresponding to each valve, sensor, opening and closing of the hood, opening and closing of the lock, tightening of the clamp, and start and stop of the air compressor. the

Preferably, the industrial computer is connected to the clamp opening and closing cylinder through the clamp opening and closing solenoid valve. the

Preferably, the industrial computer is sequentially connected to the hood opening and closing cylinder through the electronically controlled pressure reducing valve, the opening and closing valve, the pressure sensor, and the hood opening and closing solenoid valve arranged in the piping unit box. the

Preferably, the industrial computer is sequentially connected to the lock head opening and closing cylinder through the electronically controlled pressure reducing valve, the opening and closing valve, the pressure sensor, and the lock head opening and closing electromagnetic valve arranged in the piping unit box. the

Preferably, both the unrepaired buffer area and the repaired buffer area are provided with a piping unit box and a hood opening and closing mechanism storage rack for storing the unrepaired and qualified products of the opening and closing mechanism. the

Preferably, the automatic pick-up and delivery devices for the piping unit box and the hood opening and closing mechanism are stackers and jib cranes. the

The beneficial effects of the present invention are: the present invention can carry out the comprehensive performance test on the piping unit box and the hood opening and closing mechanism for the CHR2 type EMU and other types of EMUs, and can also conduct the comprehensive performance test on the piping unit box and the hood opening and closing mechanism separately. The test includes the air tightness test of the piping unit box, the action test, the air tightness test of the hood opening and closing mechanism, the action test, etc., and the test can be carried out in two ways, automatic and manual. During the automatic test, the test process is automatically controlled. Automatically test and save test parameters, analyze and judge, and give the result of whether the test is qualified or not. the

Description of drawings

Fig. 1 is the pneumatic schematic diagram of the piping unit box and the hood opening and closing mechanism test bench of the specific embodiment of the present invention;

Fig. 2 is the aerodynamic schematic diagram of simulating the vehicle-mounted piping unit box of a specific embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a pneumatic clamp according to a specific embodiment of the present invention. the

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing. the

As shown in Figures 1 to 3, a pipeline unit box maintenance line includes a storage unit, a maintenance unit, and an automatic pick-up and delivery device for the piping unit box and the hood opening and closing mechanism. The storage unit includes a buffer area to be repaired and a maintenance unit Completion cache area is used to store the products to be repaired and qualified products respectively. The maintenance unit includes disassembly area, maintenance area, assembly area and opening and closing mechanism test area. Workbench, the inspection workbench for inspecting the piping unit box and the parts of the hood opening and closing mechanism is set in the maintenance area, the assembly workbench for assembling the piping unit box and the hood opening and closing mechanism is set in the assembly area, and the opening and closing mechanism test area The piping unit box and the hood opening and closing mechanism test bench are installed inside, which are used for the performance test of the piping unit box and the hood opening and closing mechanism. Both the buffer area to be repaired and the buffer area to be repaired are equipped with a piping unit box and a storage rack for the opening and closing mechanism of the hood, which are used to store the products to be repaired and qualified products of the opening and closing mechanism. The automatic pick-up and delivery devices for the piping unit box and the hood opening and closing mechanism are stackers and cantilever cranes. the

Piping unit box and hood opening and closing mechanism test bench includes control device and mechanical device, mechanical device includes assembly workbench and pneumatic fixture, assembly workbench includes workbench body, and simulated vehicle-mounted piping unit box is installed in the workbench body The upper surface of the upper surface is equipped with a fully automatic clamping pneumatic clamp. The control device controls the hood opening and closing cylinder 1 and the lock head opening and closing cylinder 2 of the hood opening and closing mechanism through the solenoid valve and the sensor, and the clamp opening and closing cylinder 3 of the pneumatic clamp. Actions. The pneumatic clamp includes a bracket 4 on which a clamp opening and closing cylinder 3 and a clamp 5 connected to the clamp opening and closing cylinder 3 are installed. The support 4 is also provided with a safety locking cylinder 6 installed on the clamp opening Close one side of cylinder 3. The control device includes a control cabinet, an industrial computer installed in the control cabinet, and a liquid crystal display connected to the industrial computer. The control cabinet is equipped with a clamp opening and closing solenoid valve 3, an electronically controlled pressure reducing valve 8, an opening and closing valve 9, and a pressure sensor. 10 and pressure relief valve 11, clamp opening and closing solenoid valve 7 and electric control pressure reducing valve 8 are all connected with air source, and are connected with air compressor through safety valve 12. The control cabinet is equipped with a manual button switch and a manual/automatic switch corresponding to each valve, sensor, opening and closing of the hood, opening and closing of the lock, tightening of the clamp, and start and stop of the air compressor. The industrial computer is connected to the clamp opening and closing cylinder 3 through the fixture opening and closing solenoid valve 7; The valve 13 is connected with the hood opening and closing cylinder 1; the industrial computer sequentially communicates with the locking opening and closing solenoid valve 14 through the electric control pressure reducing valve 8, the opening and closing valve 9, the pressure sensor 10, and the locking opening and closing solenoid valve 14 arranged in the piping unit box. Close cylinder 2 connection. the

Working principle: The piping unit box and the opening and closing mechanism of the hood are transported by the stacker to the buffer area to be repaired for storage, and the piping unit box and the opening and closing mechanism of the hood are placed in the disassembly area, maintenance area, assembly area and head area by the cantilever crane. Hoisting and moving between the performance test areas of the cover opening and closing mechanism, and the parts are disassembled, inspected, assembled, tested and other processes are carried out respectively, orderly transmission is realized between the processes, maintenance and assembly are carried out according to the rhythm and process, and the opening and closing mechanism is inspected. and piping unit box for comprehensive performance test, and finally enter the repair buffer area for storage. Information exchange is carried out through the information terminal during the maintenance process. the

During the test, manual operation and automatic operation. Manual operation is performed through the corresponding button switch on the control cabinet, and automatic operation is controlled by the corresponding screen button on the display to control the automatic operation of the industrial computer. the

(1) Manual operation

Before the test, open all air switches, open the pressure relief valve, and close it when the pressure in all cylinders is released to 0. Turn the manual/automatic transfer switch of the control cabinet to manual. Press the closing button of the clamp opening and closing solenoid valve, and fix the test piping unit box and the hood opening and closing mechanism to the assembly workbench. the

1. Insulation resistance test

Connect the piping unit box and the external circuit of the hood opening and closing mechanism to the insulation resistance test circuit. Turn on the switch of the insulation resistance tester, apply 500V high voltage, start it by pressing the button, and watch the meter display the insulation resistance reading, if it is greater than 30MΩ, it is qualified, otherwise it is unqualified. the

2. Action test of the opening and closing mechanism of the hood

Press the air compressor start button, press the on-off valve open button, press the hood open button, and record the pressure indication value when the hood is fully open and the indicator light is on. Press the lock opening and closing button, and record the pressure indication value when the lock head is fully open and the indicator light is on. the

Turn the adjustable DC power supply to manual and adjust the output voltage to DC100V (DC85V-DC115V), open the on-off valve, and close the on-off valve when the pressure gauge indicates 0.4MPa. Press the lock opening and closing button. When the lock head is fully open and the indicator light is on, press the hood open and close button to see if the hood open and close indicator is on. Record the time from pressing the hood open and close button to the hood fully open indicator light. Turn on the time to see if it is within 5-12S. Press the lock opening and closing button, when the lock head closed in place indicator light is on, press the lock head opening and closing button again, when the lock head is fully open and in place indicator light is on, press the hood opening and closing button, and see if the hood closed in place indicator light changes On, record the time from pressing the hood opening and closing button to the hood closed in place indicator light on, to see if it is within 5-12S. Press the lock opening and closing button until the indicator light of the lock head is fully closed. If the action test is normal, it is qualified. the

After the test is over, press the stop button of the air compressor. Press the leak valve open button until the pressure gauge indicates 0.1MPa and press the leak valve close button. the

3. Piping unit box action test

Press the start button of the air compressor, turn the adjustable DC power supply to manual and adjust the output voltage to DC85V, open the on-off valve, and close the on-off valve when the pressure gauge indicates 0.4MPa. Press the hood opening and closing button, and when the hood opening and closing indicator light turns on, press the hood opening and closing button again until the hood closing indicator turns on. If the action test is normal, it is qualified. Turn the adjustable DC power supply to manual and adjust the output voltage to DC115V, and conduct the test again according to the above steps. the

After the test is over, press the stop button of the air compressor. Press the open button of the leak valve until the indication value of the pressure gauge is 0.15MPa and press the close button of the leak valve. the

4. Air tightness test of piping unit box

Press the start button of the air compressor, press the open button of the on-off valve, press the close button of the on-off valve when the pressure indication value is 0.2MPa, record the pressure indication, keep the pressure for 5 minutes, observe the change of the indication, and record new count. the

Press the open button of the on-off valve, press the close button of the on-off valve when the pressure indication value is 0.83MPa, and repeat the above operation. the

Press the open button of the on-off valve, press the close button of the on-off valve when the pressure indication value is 1.0MPa, and repeat the above operation. the

After the test is over, press the stop button of the air compressor. the

5. Air tightness test of the opening and closing mechanism of the hood

Press the start button of the air compressor, press the open button of the on-off valve, press the close button of the on-off valve when the pressure indication value is 1.0MPa, record the pressure indication, keep the pressure for 5 minutes, observe the change of the indication, and record new count. the

After the test is over, press the stop button of the air compressor. Press the leak valve open button until the pressure gauge indicates 0.2MPa and press the leak valve close button. the

(2) Automatic operation

Before the test, first open all air switches, open the pressure relief valve, and close it when the pressure in all cylinders is released to 0. Turn the manual/automatic transfer switch of the control cabinet to automatic. Press the clamp clamp button to fix the test piping unit box and the hood opening and closing mechanism to the test bench. the

1. Insulation resistance test

Connect the piping unit box and the external circuit of the hood opening and closing mechanism to the insulation resistance test connector. Turn on the switch of the insulation resistance tester, apply a high voltage of 500V, and start it through the remote control port. Press the start button of the upper computer "insulation resistance test" on the display screen, and whether it is qualified or not will be displayed on the display screen of the display screen. After the test is over, click stop and exit. the

After the test is over, turn off the switch of the insulation resistance tester. And remove the external circuit. the

2. Action test of the opening and closing mechanism of the hood

Select the adjustable DC power supply to be automatic, and click on the "hood opening and closing mechanism action test" on the display screen of the monitor to automatically conduct the test. Click to start the test, and click to stop and exit after the test. the

3. Piping unit box action test

Select the adjustable DC power supply to be automatic, and click "Piping unit box action test" on the display screen of the monitor to automatically conduct the test. Click to start the test, and click to stop and exit after the test. the

4. Air tightness test of piping unit box

On the display screen of the monitor, click "Piping Unit Box Air Tightness Test" to perform the test automatically. Click to start the test, and click to stop and exit after the test. the

5. Air tightness test of the opening and closing mechanism of the hood

On the display screen of the monitor, click "airtightness test of the opening and closing mechanism of the hood" to perform the test automatically. Click to start the test, and click to stop and exit after the test. the

Claims (9)

1. a repair line of piping unit box, it is characterized in that: 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 the action of cylinder.

2. repair line of piping unit box according to claim 1, it is characterized in that: air-actuated jaw comprises support, fixture is installed on support to be opened and closed cylinder and opens and closes with fixture the clip that cylinder is connected, on support, be also provided with safe locking cylinder, this safe locking cylinder is arranged on a side of fixture switching cylinder.

3. repair line of piping unit box according to claim 1, it is characterized in that: 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.

4. repair line of piping unit box according to claim 3, is characterized in that: 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.

5. repair line of piping unit box according to claim 3, is characterized in that: industrial computer opens and closes solenoid valve by fixture and is connected with fixture switching cylinder.

6. repair line of piping unit box according to claim 3, is characterized in that: 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.

7. repair line of piping unit box according to claim 3, is characterized in that: 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.

8. repair line of piping unit box according to claim 1, is characterized in that: 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.

9. repair line of piping unit box according to claim 1, is characterized in that: the automatic fetching and sending devices of tubing unit box and hood opening-closing mechanism is forklift and cantilever crane.