Automatic Press-fitting Device and Method for Coupling of High-speed EMU Bogie

Abstract

The present invention relates to an automatic press-fitting device and an automatic press-fitting method for a coupling of a high-speed EMU bogie. The automatic press-fitting device includes: a high-pressure oil injection pipeline, a medium-pressure oil injection pipeline, and a PLC controller. The automatic press-fitting device for the coupling of the high-speed EMU bogie of the present invention can read relevant information through a wireless barcode scanner, automatically record the press-fitting test process of the coupling, automatically generate a press-fitting test record form, and the record form is not filled in manually, avoiding the artificial rewriting of the test record and improving the credibility of the test process record. The automatic press-fitting device and the automatic press-fitting method for the coupling of the high-speed EMU bogie of the present invention can meet the requirements of the press-fitting of the bogie coupling, improve the press-fitting efficiency and the press-fitting quality, and at the same time improve the credibility of the press-fitting result quality record and the traceability of the quality record.

Description

Technical Field

[0001] The present invention relates to the technical field of EMU assembly, and particularly to an automatic press-fitting device and an automatic press-fitting method for a coupling of a high-speed EMU bogie. Background Art

[0002] As the running gear of a rail vehicle, the bogie structure includes main components such as a driving device and a braking device. The driving device includes a traction motor and a gearbox. Among them, the traction motor converts electrical energy into kinetic energy, and the gearbox transmits the kinetic energy to the axle, and then drives the wheels to run on the track.

[0003] At present, the commercial operation speed of high-speed EMUs in China has reached 350 km / h, with a very high speed level, which is also achieved through the combination of a traction motor and a gearbox. Such a high speed level poses higher requirements for the reliability of the entire power transmission. In order to ensure high-speed operation and reliability, a flexible coupling device is used to connect the traction motor and the gearbox. This kind of coupling can transmit torque and has a certain flexibility.

[0004] At present, the general cooperation method between the coupling and the shaft is an interference fit with a taper of 1:50. The hub hole is expanded by manually operating a high-pressure oil injection pump to inject oil, and then a hollow hydraulic cylinder is driven by a manual hydraulic pump to push the coupling to move axially. The two operations are alternated until the pressure of the manual hydraulic pump reaches the maximum value, then the high-pressure oil injection pump is depressurized. After the manual hydraulic pump continues to maintain for more than 15 minutes, the manual hydraulic pump is depressurized again, and the coupling is manually press-fitted. With the existing coupling press-fitting device, the quality records need to be filled in manually, the pressure-holding time needs to be controlled manually, the error rate of manual filling of quality records is relatively high, and the reliability of quality records is not high. Summary of the Invention

[0005] The present invention aims to solve the technical problems in the prior art and provides an automatic press-fitting device and an automatic press-fitting method for a coupling of a high-speed EMU bogie.

[0006] To solve the above technical problems, the technical solution of the present invention is specifically as follows:

[0007] An automatic press-fitting device for a coupling of a high-speed EMU bogie includes: a high-pressure oil injection pipeline, a medium-pressure oil injection pipeline, and a PLC controller;

[0008] The hydraulic pipeline of the high-pressure oil injection pipeline is successively connected with: a quick-connect air pipe, a pneumatic triple unit, a pressure gauge, a safety valve, a first electro-hydraulic proportional reducing valve, a first pressure sensor, a first solenoid valve, a gas-driven hydraulic high-pressure pump, a unloading valve, and a second pressure sensor; the unloading valve is controlled to open and close by a second solenoid valve; wherein, the pneumatic pipelines of the first electro-hydraulic proportional reducing valve, the first pressure sensor, the first solenoid valve, the second solenoid valve, and the second pressure sensor are respectively connected to the PLC controller;

[0009] The hydraulic pipeline of the medium-pressure oil injection pipeline is successively connected with: a second electro-hydraulic proportional reducing valve, a third pressure sensor, a third solenoid valve, a fourth solenoid valve, a gas-driven hydraulic medium-pressure pump, a three-position four-way valve, and a fourth pressure sensor; wherein, the pneumatic pipelines of the second electro-hydraulic proportional reducing valve, the third pressure sensor, the third solenoid valve, the fourth solenoid valve, and the fourth pressure sensor are respectively connected to the PLC controller;

[0010] The quick-connect air pipe is used to provide test gas;

[0011] The pneumatic triple unit is used to purify and filter the test gas;

[0012] The pressure gauge is used to monitor the pressure value of the pneumatic pipeline and / or the hydraulic pipeline;

[0013] The safety valve is used to ensure the safety of the pneumatic pipeline when overpressure occurs in the pneumatic pipeline;

[0014] The first electro-hydraulic proportional reducing valve and the second electro-hydraulic proportional reducing valve are respectively used to control the pressure value of the pneumatic pipeline through an electric signal and adjust the pressure value in the pneumatic pipeline;

[0015] The first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor are respectively used to convert the pressure value of the pneumatic pipeline into an electric signal;

[0016] The first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are respectively used to control the opening and closing of the pneumatic pipeline through an electric signal;

[0017] The unloading valve is used for the instantaneous unloading of the oil pressure of the high-pressure oil injection pipeline;

[0018] The three-position four-way valve is used for the oil supply, oil sealing, and oil return stages of the hollow hydraulic cylinder;

[0019] The PLC controller is used to control the pneumatic pipeline, and then drive the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline to realize the automatic press-fitting of the coupling.

[0020] In the above technical solution, the automatic pressing device further includes: a wireless barcode scanner connected to the PLC controller, which is used to automatically read the required material information into the data record by scanning the QR code information of the material components.

[0021] In the above technical solution, the automatic pressing device further includes: a printer connected to the PLC controller, which is used to print the experimental record report.

[0022] In the above technical solution, a pressure reducing valve is further connected to the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline; the pressure reducing valve is used to manually adjust and control the output pressure of the pneumatic pipeline.

[0023] An automatic pressing method for the coupling of a high-speed EMU bogie, the automatic pressing device applicable to this automatic pressing method includes: a high-pressure oil injection pipeline, a medium-pressure oil injection pipeline, and a PLC controller;

[0024] On the hydraulic pipeline of the high-pressure oil injection pipeline, the following are sequentially connected: a quick-connect air pipe, a pneumatic triple unit, a pressure gauge, a safety valve, a first electro-hydraulic proportional reducing valve, a first pressure sensor, a first solenoid valve, a gas-driven hydraulic high-pressure pump, a relief valve, and a second pressure sensor; the relief valve is controlled to open and close by a second solenoid valve; among them, the pneumatic pipelines of the first electro-hydraulic proportional reducing valve, the first pressure sensor, the first solenoid valve, the second solenoid valve, and the second pressure sensor are respectively connected to the PLC controller;

[0025] On the hydraulic pipeline of the medium-pressure oil injection pipeline, the following are sequentially connected: a second electro-hydraulic proportional reducing valve, a third pressure sensor, a third solenoid valve, a fourth solenoid valve, a gas-driven hydraulic medium-pressure pump, a three-position four-way valve, and a fourth pressure sensor; among them, the pneumatic pipelines of the second electro-hydraulic proportional reducing valve, the third pressure sensor, the third solenoid valve, the fourth solenoid valve, and the fourth pressure sensor are respectively connected to the PLC controller;

[0026] The quick-connect air pipe is used to provide test gas;

[0027] The pneumatic triple unit is used to purify and filter the test gas;

[0028] The pressure gauge is used to monitor the pressure value of the pneumatic pipeline and / or the hydraulic pipeline;

[0029] The safety valve is used to ensure the safety of the pneumatic pipeline when the pneumatic pipeline has overpressure;

[0030] The first electro-hydraulic proportional reducing valve and the second electro-hydraulic proportional reducing valve are respectively used to control the pressure value of the pneumatic pipeline through electrical signals and adjust the pressure value in the pneumatic pipeline;

[0031] The first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor are respectively used to convert the pressure values of the pneumatic pipeline into electrical signals;

[0032] The first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are respectively used to control the opening and closing of the pneumatic pipeline through electrical signals;

[0033] The unloading valve is used for the instantaneous unloading of the oil pressure in the high-pressure oil injection pipeline;

[0034] The three-position four-way valve is used for the oil supply, oil sealing, and oil return stages of the hollow hydraulic cylinder;

[0035] The PLC controller is used to control the pneumatic pipeline, and then drive the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline to realize the automatic press-fitting of the coupling;

[0036] This automatic press-fitting method includes the following steps:

[0037] Step i: Set the maximum values of the air-driven liquid high-pressure pump and the air-driven liquid medium-pressure pump and the time during pressure holding;

[0038] Then, drive the PLC controller through the press-fitting program to control the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the first electro-hydraulic proportional reducing valve, and the second electro-hydraulic proportional reducing valve to control the flow rate of the pneumatic pipeline, and drive the air-driven liquid high-pressure pump and / or the air-driven liquid medium-pressure pump through gas to realize oil injection;

[0039] Feed back the signals of the first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor to the PLC controller, and through the program control of the PLC controller, realize the alternating operation of the air-driven liquid high-pressure pump and the air-driven liquid medium-pressure pump, and realize the automatic press-fitting of the coupling;

[0040] Step ii: After the coupling is press-fitted in place, control the pneumatic pipeline through the PLC controller, open the unloading valve, so that the high-pressure oil injection pipeline is instantly depressurized; the PLC controller controls the three-position four-way valve in the pressure-holding position through the pneumatic pipeline, so that the pipeline supplying the hollow hydraulic cylinder is in the pressure-holding state, monitor the pressure value in the hydraulic pipeline, and if the pressure-holding pressure value decreases, the PLC controller controls the three-position four-way valve in the oil supply state through the pneumatic pipeline;

[0041] Step iii: When the pressure-holding time is reached, the PLC controller controls the pneumatic pipeline to put the three-position four-way valve in the pressure-relief state to complete the press-fitting of the coupling.

[0042] In the above technical solution, the automatic press-fitting device applicable to the automatic press-fitting method further includes: a wireless barcode scanner connected to the PLC controller, and the wireless barcode scanner is used to automatically read the required material information into the data record by scanning the two-dimensional code information of the material component; after step iii, there is also provided:

[0043] Step iv: Complete the filling of test data through the wireless barcode scanner, complete the time and pressure holding pressure change curve graph according to the real-time collected pressure value and its own time counter, and automatically determine whether the press-fitting process is qualified according to the judgment standard.

[0044] In the above technical solution, the automatic press-fitting device applicable to the automatic press-fitting method further includes: a printer connected to the PLC controller;

[0045] After step iv, there is also a step: complete the printing of the experimental record report through the printer.

[0046] In the above technical solution, the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline are also connected with a pressure reducing valve; the pressure reducing valve is used to manually adjust and control the output pressure of the pneumatic pipeline.

[0047] The beneficial effects of the present invention are:

[0048] The automatic press-fitting device and automatic press-fitting method for the coupling of the high-speed EMU bogie of the present invention summarize the existing manual press-fitting process of the coupling, establish a design model, and design a set of automatic press-fitting devices for the coupling of the EMU bogie by means of the existing PLC control technology and fluid mechanics technology. The device of the present invention can compile an automatic press-fitting program according to the press-fitting technical conditions of the coupling, automatically complete the press-fitting of the coupling according to the set press-fitting program, and automatically print the test record after the test.

[0049] The automatic press-fitting device for the coupling of the high-speed EMU bogie of the present invention includes two sets of air-driven liquid control pipelines, one set of air-driven liquid high-pressure oil injection control pipelines, which is used to replace the function of the manual high-pressure oil injection pump, and one set of air-driven liquid medium-pressure oil injection control pipelines, which is used to replace the function of the manual hydraulic pump. The two sets of oil injection pipelines can be controlled by the PLC controller, so as to realize the function of automatically press-fitting the coupling, and the present invention can automatically record the test time and improve the production efficiency.

[0050] The automatic press-fitting device for the coupling of the high-speed EMU bogie of the present invention can realize reading relevant information through the wireless barcode scanner, automatically record the coupling press-fitting test process, automatically generate a press-fitting test record form, and the record form is not filled in manually, avoiding the artificial rewriting of the test record and improving the credibility of the test process record.

[0051] The automatic press-fitting device and method for the coupling of the high-speed multiple unit bogie of the present invention can meet the requirements of press-fitting the coupling of the bogie, improve the press-fitting efficiency and quality, and at the same time improve the credibility of the press-fitting result quality record and the traceability of the quality record. Brief Description of the Drawings

[0052] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0053] Figure 1 It is a schematic structural diagram of the automatic press-fitting device for the coupling of the high-speed multiple unit bogie of the present invention.

[0054] Figure 2 It is a schematic flow chart of the steps of the automatic press-fitting method for the coupling of the high-speed multiple unit bogie of the present invention.

[0055] The reference numerals in the drawings are shown as:

[0056] 1 - Quick-connect air duct; 2 - Pneumatic triple unit; 3 - Pressure gauge; 4 - Safety valve;

[0057] 51 - First electro-hydraulic proportional pressure reducing valve; 52 - Second electro-hydraulic proportional pressure reducing valve; 53 - Pressure reducing valve; 54 - Unloading valve;

[0058] 55 - First solenoid valve; 56 - Second solenoid valve; 57 - Third solenoid valve; 58 - Fourth solenoid valve; 59 - Three-position four-way valve;

[0059] 61 - First pressure sensor; 62 - Second pressure sensor; 63 - Third pressure sensor; 64 - Fourth pressure sensor;

[0060] 71 - Air-driven high-pressure liquid pump; 72 - Air-driven medium-pressure liquid pump;

[0061] 8 - Wireless barcode scanner; 9 - PLC controller; 10 - Printer. Specific Embodiments

[0062] The present invention will be described in detail below in conjunction with the drawings.

[0063] As Figure 1 shown, the automatic press-fitting device for the coupling of the high-speed multiple unit bogie of the present invention includes: a high-pressure oil injection pipeline, a medium-pressure oil injection pipeline, a PLC controller 9; and a wireless barcode scanner 8 and a printer 10 connected to the PLC controller 9.

[0064] On the hydraulic pipeline of the high-pressure oil injection pipeline, the following components are connected in sequence: quick-connect air pipe 1, pneumatic triple unit 2, pressure gauge 3, safety valve 4, first electro-hydraulic proportional reducing valve 51, first pressure sensor 61, first solenoid valve 55, air-driven hydraulic high-pressure pump 71, unloading valve 54, second pressure sensor 62; the unloading valve 54 is controlled to open and close by the second solenoid valve 56; among them, the pneumatic pipelines of the first electro-hydraulic proportional reducing valve 51, the first pressure sensor 61, the first solenoid valve 55, the second solenoid valve 56, and the second pressure sensor 62 are respectively connected to the PLC controller 9.

[0065] On the hydraulic pipeline of the medium-pressure oil injection pipeline, the following components are connected in sequence: second electro-hydraulic proportional reducing valve 52, third pressure sensor 63, third solenoid valve 57, fourth solenoid valve 58, air-driven hydraulic medium-pressure pump 72, three-position four-way valve 59, and fourth pressure sensor 64; among them, the pneumatic pipelines of the second electro-hydraulic proportional reducing valve 52, the third pressure sensor 63, the third solenoid valve 57, the fourth solenoid valve 58, and the fourth pressure sensor 64 are respectively connected to the PLC controller 9.

[0066] The quick-connect air pipe 1 is used to provide test gas; the pneumatic triple unit 2 is used to purify and filter the test gas; the pressure gauge 3 is used to monitor the pressure value of the pneumatic pipeline and / or the hydraulic pipeline; the safety valve 4 is used to ensure the safety of the pneumatic pipeline when overpressure occurs in the pneumatic pipeline; the first electro-hydraulic proportional reducing valve 51 and the second electro-hydraulic proportional reducing valve 52 are respectively used to control the pressure value of the pneumatic pipeline through electrical signals and adjust the pressure value in the pneumatic pipeline; the first pressure sensor 61, the second pressure sensor 62, the third pressure sensor 63, and the fourth pressure sensor 64 are respectively used to convert the pressure value of the pneumatic pipeline into an electrical signal; the first solenoid valve 55, the second solenoid valve 56, the third solenoid valve 57, and the fourth solenoid valve 58 are respectively used to control the opening and closing of the pneumatic pipeline through electrical signals; the unloading valve 54 is used for the instantaneous unloading of the oil pressure in the high-pressure oil injection pipeline; the three-position four-way valve 59 is used for the oil supply, oil sealing, and oil return stages of the hollow hydraulic cylinder; the PLC controller 9 is used to control the pneumatic pipeline, and then drive the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline to realize the automatic press-fitting of the coupling. The high-pressure oil injection pipeline and the medium-pressure oil injection pipeline are connected with a reducing valve 53, which is used to manually adjust and control the output pressure of the pneumatic pipeline. The wireless barcode scanner 8 is used to automatically read the required material information into the data record by scanning the two-dimensional code information of the material parts; the printer 10 is used to print the experimental record report.

[0067] As Figure 1 and 2 shown, the automatic press-fitting method for the coupling of the high-speed EMU bogie of the present invention includes the following steps:

[0068] Step i: Alternate press-fitting of the high-pressure pump and the medium-pressure pump:

[0069] Set the maximum values of the gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72 and the pressure holding time;

[0070] Then, drive the PLC controller 9 through the pressing program to control the first solenoid valve 55, the second solenoid valve 56, the third solenoid valve 57, the fourth solenoid valve 58, the first electro-hydraulic proportional reducing valve 51 and the second electro-hydraulic proportional reducing valve 52 to control the flow rate of the pneumatic pipeline, and drive the gas-driven liquid high-pressure pump 71 and / or the gas-driven liquid medium-pressure pump 72 through gas to achieve oil injection;

[0071] Feed back the signals of the first pressure sensor 61, the second pressure sensor 62, the third pressure sensor 63 and the fourth pressure sensor 64 to the PLC controller 9, and through the program control of the PLC controller 9, realize the alternating operation of the gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72, and realize the automatic pressing of the coupling;

[0072] Step ii: Medium-pressure pump pressure holding:

[0073] After the coupling is pressed in place, control the pneumatic pipeline through the PLC controller 9 to open the unloading valve 54, so that the high-pressure oil injection pipeline is instantly depressurized; the PLC controller 9 controls the three-way four-way valve 59 in the pressure holding position through the pneumatic pipeline, so that the pipeline supplying the hollow hydraulic cylinder is in the pressure holding state, monitor the pressure value in the hydraulic pipeline, and if the pressure holding pressure value decreases, the PLC controller 9 controls the three-way four-way valve 59 in the oil supply state through the pneumatic pipeline;

[0074] Step iii: Medium-pressure pump depressurization:

[0075] When the pressure holding time is reached, the PLC controller 9 controls the pneumatic pipeline to put the three-way four-way valve 59 in the depressurization state to complete the pressing of the coupling.

[0076] Step iv: Test data recording and printing:

[0077] Complete the filling of test data through the wireless barcode scanner 8, complete the curve graph of the change of time and pressure holding pressure according to the real-time collected pressure value and its own time counter, and automatically judge whether the pressing process is qualified according to the judgment standard. Finally, complete the printing of the experimental record report through the printer 10.

[0078] The present invention will be further described in detail below with reference to the accompanying drawings.

[0079] The present invention is used for the automatic press-fitting of couplings for the bogies of high-speed multiple units. The device includes: a quick-connect air pipe (1), a pneumatic triple unit (1), pressure gauges (4), a safety valve (1), electro-proportional pressure reducing valves (2), pressure sensors (4), a pressure reducing valve (1), solenoid valves (4), air-driven hydraulic pumps (2), a three-position four-way valve (1), a unloading valve (1), a wireless barcode scanner (1), a PLC controller (1), and a printer (1);

[0080] The pneumatic triple unit is used to purify and filter the gas entering the device for testing to ensure the quality of the gas source;

[0081] The pressure gauges are used to monitor the pressure value of the pneumatic pipeline and the pressure value of the hydraulic pipeline in real time;

[0082] The safety valve is used to prevent overpressure in the entire pneumatic pipeline and ensure the safety of the entire pneumatic pipeline;

[0083] The electro-proportional pressure reducing valve controls the pressure value of the pneumatic pipeline through an electrical signal, and the pressure value in the pneumatic pipeline can be adjusted through it;

[0084] The pressure sensor converts the pressure value of the pneumatic pipeline into an electrical signal;

[0085] The pressure reducing valve controls the output pressure of the pneumatic pipeline through manual adjustment;

[0086] The solenoid valve switch control valve controls the opening and closing of the pneumatic pipeline through an electrical signal;

[0087] The unloading valve is an air-operated switch for the instantaneous unloading of oil pressure in the high-pressure oil injection pipeline;

[0088] The three-position four-way valve is used for the three stages of oil supply, oil sealing, and oil return of the hollow hydraulic cylinder, so as to realize the three processes of pressurization, pressure holding, and pressure relief of the hollow hydraulic cylinder;

[0089] The PLC controller compiles an automatic press-fitting program according to the requirements of the automatic press-fitting of the coupling, and converts the program into an electrical signal to control the pneumatic pipeline. The pneumatic pipeline drives the hydraulic pump and the valve system, so as to realize the automatic press-fitting of the coupling.

[0090] The wireless barcode scanner is used to automatically read the information such as the materials to be filled in into the data record of the device by scanning the QR code information of the material components.

[0091] The experimental process of the device is described as follows:

[0092] The entire automatic press-fitting test needs to go through four processes: the alternating press-fitting of the gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72, the pressure-holding process of the gas-driven liquid medium-pressure pump 72, the pressure relief of the gas-driven liquid medium-pressure pump 72, and the recording and printing of test data.

[0093] The gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72 work alternately: Through the PLC controller 9, a press-fitting program is compiled according to the alternating working steps of the gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72. The press-fitting program is generally divided into five steps, and the maximum value of the gas-driven liquid high-pressure pump 71, the maximum value of the gas-driven liquid medium-pressure pump 72, and the pressure-holding time are set for each step. Then, the press-fitting program drives the PLC controller 9 to control the electromagnetic switch and the electromagnetic proportional control valve to control the gas pipeline flow rate. The gas drives the gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72, so as to realize the oil injection of the gas-driven liquid high-pressure pump 71 and the oil injection of the gas-driven liquid medium-pressure pump 72. The signals of the pressure sensors on the high-pressure oil injection pipeline and the pressure sensors on the oil outlet pipeline of the gas-driven liquid medium-pressure pump 72 are fed back to the PLC controller 9, and through the program control of the PLC controller 9, the gas-driven liquid high-pressure pump 71 and the gas-driven liquid medium-pressure pump 72 work alternately, realizing the automatic press-fitting of the coupling;

[0094] The pressure-holding and pressure-relief process of the gas-driven liquid medium-pressure pump 72: After the coupling is press-fitted in place, the PLC controller 9 controls the pneumatic pipeline solenoid valve to open the unloading valve 54 of the high-pressure oil injection pipeline, so that the high-pressure oil injection pipeline is instantly depressurized; at the same time, the PLC controller 9 controls the solenoid valve, and through the pneumatic pipeline, the three-position four-way valve 59 is controlled in the pressure-holding position, so as to realize that the pipeline supplying the hollow hydraulic cylinder is in the pressure-holding state. At the same time, the pressure sensor in the hydraulic pipeline monitors the pipeline pressure value at all times. If the pressure-holding pressure value decreases, the PLC controller 9 controls the solenoid valve, and through the pneumatic pipeline, the three-position four-way valve 59 is in the oil supply state. When the pressure-holding time is reached, the PLC controller 9 controls the solenoid valve, and through the pneumatic pipeline, the three-position four-way valve 59 is in the pressure-relief state, completing the press-fitting of the coupling.

[0095] Recording and printing of test data: The test data (such as information about the coupling and the motor, etc.) is filled in through the wireless barcode scanner 8. At the same time, according to the real-time collected pressure value and its own time counter, a curve graph of the change of time and pressure-holding pressure is completed, and according to the judgment standard, it is automatically judged whether the press-fitting process is qualified, and the test record report is printed through the printer 10.

[0096] The automatic press-fitting device and method for the coupling of the high-speed EMU bogie of the present invention summarize the press-fitting process of the existing manual press-fitting coupling, establish a design model, and with the help of the existing PLC control technology and fluid mechanics technology, design a set of automatic press-fitting devices for the coupling of the EMU bogie. The device of the invention can compile an automatic press-fitting program according to the coupling press-fitting technical conditions, automatically complete the press-fitting of the coupling according to the set press-fitting program, and automatically print the test record after the test.

[0097] The automatic coupling pressing device for the bogie of the high-speed multiple unit in the present invention includes two sets of air-driven liquid control pipelines, one set of high-pressure oil injection control pipelines for air-driven liquid to replace the function of manual high-pressure oil pumps, and one set of medium-pressure oil injection control pipelines for air-driven liquid to replace the function of manual hydraulic pumps. The two sets of oil injection pipelines can be controlled by a PLC controller, so as to realize the function of automatically pressing the coupling. Moreover, the present invention can automatically record the test time and improve the production efficiency.

[0098] The automatic coupling pressing device for the bogie of the high-speed multiple unit in the present invention can read relevant information through a wireless barcode scanner, automatically record the coupling pressing test process, automatically generate a pressing test record form, and the record form is not filled in manually, avoiding the artificial rewriting of test records and improving the credibility of test process records.

[0099] The automatic coupling pressing device and the automatic pressing method for the bogie of the high-speed multiple unit in the present invention can meet the requirements of bogie coupling pressing, improve the pressing efficiency and quality, and at the same time improve the credibility of the result quality record of pressing and the traceability of quality records.

[0100] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An automatic press-fitting device for a coupling of a high-speed EMU bogie, characterized in that Including: A high-pressure oil injection pipeline, a medium-pressure oil injection pipeline, and a PLC controller (9); On the hydraulic pipeline of the high-pressure oil injection pipeline, the following components are connected in sequence: a quick-connect air duct (1), a pneumatic triple unit (2), a pressure gauge (3), a safety valve (4), a first electro-hydraulic proportional reducing valve (51), a first pressure sensor (61), a first solenoid valve (55), a gas-driven hydraulic high-pressure pump (71), a relief valve (54), and a second pressure sensor (62); the relief valve (54) is controlled to open and close by a second solenoid valve (56); among them, the pneumatic pipelines of the first electro-hydraulic proportional reducing valve (51), the first pressure sensor (61), the first solenoid valve (55), the second solenoid valve (56), and the second pressure sensor (62) are respectively connected to the PLC controller (9); On the hydraulic pipeline of the medium-pressure oil injection pipeline, the following components are connected in sequence: a second electro-hydraulic proportional reducing valve (52), a third pressure sensor (63), a third solenoid valve (57), a fourth solenoid valve (58), a gas-driven hydraulic medium-pressure pump (72), a three-position four-way valve (59), and a fourth pressure sensor (64); among them, the pneumatic pipelines of the second electro-hydraulic proportional reducing valve (52), the third pressure sensor (63), the third solenoid valve (57), the fourth solenoid valve (58), and the fourth pressure sensor (64) are respectively connected to the PLC controller (9); The quick-connect air duct (1) is used to provide test gas; The pneumatic triple unit (2) is used to purify and filter the test gas; The pressure gauge (3) is used to monitor the pressure value of the pneumatic pipeline and / or the hydraulic pipeline; The safety valve (4) is used to ensure the safety of the pneumatic pipeline when the pneumatic pipeline has overpressure; The first electro-hydraulic proportional reducing valve (51) and the second electro-hydraulic proportional reducing valve (52) are respectively used to control the pressure value of the pneumatic pipeline through an electric signal and adjust the pressure value in the pneumatic pipeline; The first pressure sensor (61), the second pressure sensor (62), the third pressure sensor (63), and the fourth pressure sensor (64) are respectively used to convert the pressure value of the pneumatic pipeline into an electric signal; The first solenoid valve (55), the second solenoid valve (56), the third solenoid valve (57), and the fourth solenoid valve (58) are respectively used to control the opening and closing of the pneumatic pipeline through an electric signal; The relief valve (54) is used for the instantaneous unloading of the oil pressure of the high-pressure oil injection pipeline; The three-position four-way valve (59) is used for the oil supply, oil sealing, and oil return stages of the hollow hydraulic cylinder; The PLC controller (9) is used to control the pneumatic pipeline, and then drive the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline to realize the automatic press-fitting of the coupling.

2. The automatic press-fitting device for the coupling of the high-speed EMU bogie according to claim 1, characterized in that, It further includes: A wireless barcode scanner (8) connected to the PLC controller (9), and the wireless barcode scanner (8) is used to automatically read the required material information into the data record by scanning the two-dimensional code information of the material component.

3. The automatic press-fitting device for the coupling of the high-speed EMU bogie according to claim 1, characterized in that, It further includes: A printer (10) connected to the PLC controller (9), and the printer (10) is used to print the experimental record report.

4. The automatic press-fitting device for the coupling of the high-speed EMU bogie according to claim 1, characterized in that, The high-pressure oil injection pipeline and the medium-pressure oil injection pipeline are also connected with a pressure reducing valve (53); the pressure reducing valve (53) is used to manually adjust and control the output pressure of the pneumatic pipeline.

5. The automatic pressing method of the coupling automatic pressing device for the high-speed EMU bogie according to any one of claims 1-4, characterized in that, The automatic press-fitting device applicable to this automatic press-fitting method includes: a high-pressure oil injection pipeline, a medium-pressure oil injection pipeline, and a PLC controller (9); On the hydraulic pipeline of the high-pressure oil injection pipeline, the following components are sequentially connected: a quick-connect air pipe (1), a pneumatic triple unit (2), a pressure gauge (3), a safety valve (4), a first electro-hydraulic proportional pressure reducing valve (51), a first pressure sensor (61), a first solenoid valve (55), a pneumatic-driven high-pressure liquid pump (71), a pressure relief valve (54), and a second pressure sensor (62); the pressure relief valve (54) is controlled to open and close by a second solenoid valve (56); among them, the pneumatic pipelines of the first electro-hydraulic proportional pressure reducing valve (51), the first pressure sensor (61), the first solenoid valve (55), the second solenoid valve (56), and the second pressure sensor (62) are respectively connected to the PLC controller (9); On the hydraulic pipeline of the medium-pressure oil injection pipeline, the following components are sequentially connected: a second electro-hydraulic proportional pressure reducing valve (52), a third pressure sensor (63), a third solenoid valve (57), a fourth solenoid valve (58), a pneumatic-driven medium-pressure liquid pump (72), a three-position four-way valve (59), and a fourth pressure sensor (64); among them, the pneumatic pipelines of the second electro-hydraulic proportional pressure reducing valve (52), the third pressure sensor (63), the third solenoid valve (57), the fourth solenoid valve (58), and the fourth pressure sensor (64) are respectively connected to the PLC controller (9); The quick-connect air pipe (1) is used to provide test gas; The pneumatic triple unit (2) is used to purify and filter the test gas; The pressure gauge (3) is used to monitor the pressure value of the pneumatic pipeline and / or the hydraulic pipeline; The safety valve (4) is used to ensure the safety of the pneumatic pipeline when overpressure occurs in the pneumatic pipeline; The first electro-hydraulic proportional pressure reducing valve (51) and the second electro-hydraulic proportional pressure reducing valve (52) are respectively used to control the pressure value of the pneumatic pipeline through electrical signals and adjust the pressure value in the pneumatic pipeline; The first pressure sensor (61), the second pressure sensor (62), the third pressure sensor (63), and the fourth pressure sensor (64) are respectively used to convert the pressure value of the pneumatic pipeline into an electrical signal; The first solenoid valve (55), the second solenoid valve (56), the third solenoid valve (57), and the fourth solenoid valve (58) are respectively used to control the opening and closing of the pneumatic pipeline through electrical signals; The pressure relief valve (54) is used for the instantaneous unloading of the oil pressure in the high-pressure oil injection pipeline; The three-position four-way valve (59) is used for the oil supply, oil sealing, and oil return stages of the hollow hydraulic cylinder; The PLC controller (9) is used to control the pneumatic pipeline, and then drive the high-pressure oil injection pipeline and the medium-pressure oil injection pipeline to realize the automatic press-fitting of the coupling; This automatic press-fitting method includes the following steps: Step i: Set the maximum values of the gas-driven liquid high-pressure pump (71) and the gas-driven liquid medium-pressure pump (72) and the pressure-holding time; Then, drive the PLC controller (9) through the press-fitting program to control the first solenoid valve (55), the second solenoid valve (56), the third solenoid valve (57), the fourth solenoid valve (58), the first electro-hydraulic proportional reducing valve (51) and the second electro-hydraulic proportional reducing valve (52) to control the flow rate of the pneumatic pipeline, and drive the gas-driven liquid high-pressure pump (71) and / or the gas-driven liquid medium-pressure pump (72) through gas to achieve oil injection; Feed back the signals of the first pressure sensor (61), the second pressure sensor (62), the third pressure sensor (63) and the fourth pressure sensor (64) to the PLC controller (9), and through the program control of the PLC controller (9), realize the alternating operation of the gas-driven liquid high-pressure pump (71) and the gas-driven liquid medium-pressure pump (72), and realize the automatic press-fitting of the coupling; Step ii: After the coupling is press-fitted in place, control the pneumatic pipeline through the PLC controller (9) to open the unloading valve (54), so that the high-pressure oil injection pipeline is instantly depressurized; the PLC controller (9) controls the three-way four-way valve (59) in the pressure-holding position through the pneumatic pipeline, so that the pipeline supplying the hollow hydraulic cylinder is in a pressure-holding state, monitor the pressure value in the hydraulic pipeline, and if the pressure-holding pressure value decreases, the PLC controller (9) controls the three-way four-way valve (59) in the oil supply state through the pneumatic pipeline; Step iii: When the pressure-holding time is reached, the PLC controller (9) controls the pneumatic pipeline to put the three-way four-way valve (59) in a depressurized state to complete the press-fitting of the coupling.

6. The automatic pressing method of the coupling automatic pressing device for the bogie of a high-speed multiple unit, as claimed in claim 5, wherein The automatic press-fitting device applicable to this automatic press-fitting method further includes: a wireless barcode scanner (8) connected to the PLC controller (9), and the wireless barcode scanner (8) is used to automatically read the required material information into the data record by scanning the two-dimensional code information of the material part; after step iii, there is also: Step iv: Complete the filling of test data through the wireless barcode scanner (8), complete the time and pressure-holding pressure change curve graph according to the real-time collected pressure value and its own time counter, and automatically judge whether the press-fitting process is qualified according to the judgment standard.

7. The automatic pressing method of the coupling automatic pressing device for the bogie of the high-speed multiple unit, as claimed in claim 6, wherein The automatic press-fitting device applicable to this automatic press-fitting method further includes: a printer (10) connected to the PLC controller (9); After step iv, there is also a step: print the experimental record report through the printer.

8. The automatic pressing method of the coupling automatic pressing device for the bogie of the high-speed multiple unit train according to any one of claims 5-7, characterized in that, The high-pressure oil injection pipeline and the medium-pressure oil injection pipeline are also connected with a pressure reducing valve (53); the pressure reducing valve (53) is used to manually adjust and control the output pressure of the pneumatic pipeline.

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