CN114115095B - Gear box test working condition adjusting device and method - Google Patents
Gear box test working condition adjusting device and method Download PDFInfo
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- CN114115095B CN114115095B CN202111226330.9A CN202111226330A CN114115095B CN 114115095 B CN114115095 B CN 114115095B CN 202111226330 A CN202111226330 A CN 202111226330A CN 114115095 B CN114115095 B CN 114115095B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention relates to a device and a method for adjusting the test working condition of a gear box, wherein the device comprises a control box, a PLC (programmable logic controller), a shifting switch group, a point control switch group, an output wiring port group, an electromagnetic relay group and a power supply box; the shifting switch group and the point control switch group are connected with the PLC controller, and the function control switch group and the function switch are connected in series between the shifting switch group and the point control switch group; the power box is connected with an output power end of the PLC, the shifting switch group and the point control switch group are used for simulating a start-stop switch and a gear selector of the system, the output wiring port group comprises a digital quantity output wiring port and an analog quantity output wiring port, the digital quantity output wiring port is connected with a gear box electromagnetic valve, the analog quantity output wiring port is connected with an eddy current loader, the electromagnetic relay group is connected with a frequency converter of a driving motor, and the PLC is used for controlling states of various output signals, so that automatic adjustment of test working conditions of the gear box is controlled.
Description
Technical Field
The invention belongs to the technical field of gearbox test process control, and particularly relates to a gearbox test working condition adjusting device and method.
Background
The existing gearbox test working condition is adjusted, and a test operator adjusts a gear selector of the gearbox, a motor potentiometer and a loader potentiometer to achieve the test required working condition, so that the adjustment mode can meet the test requirements for test items with constant working conditions, but the existing HCQ300 marine gearbox is required to be continuously commutated, variable in speed and variable in load, and the manual adjustment is difficult to achieve the test required working condition requirements, so that a device capable of achieving various test working condition adjustment is required to meet different test requirements.
Disclosure of Invention
In order to solve the technical problems, a first object of the present invention is to provide a device for adjusting the test condition of a gear box, which can reduce manual intervention and overcome the defect of the existing gear box test on the adjustment of the complex test condition; a second object of the invention is to provide a method for adjusting the test conditions of a gearbox.
In order to achieve the above object of the first invention, the present invention adopts the following technical scheme:
a gearbox test working condition adjusting device comprises a control box, and a PLC controller, a shifting switch group, a point control switch group, an output wiring port group, an electromagnetic relay group and a power supply box which are all integrated in the control box; the shifting switch group is connected with switching value input terminals I0.0-I1.5 of the PLC controller, the point control switch group is connected with switching value input terminals I0.0-I0.7 of the PLC controller, and input enabling control and input mode switching are performed between the shifting switch group and the point control switch group through connecting the function control switch group and the function switch in series; the power supply box is connected with an output power supply end of the PLC controller and supplies power to an output part of the PLC controller; one analog output voltage wiring port in the output wiring port group is connected with an analog output voltage end of the PLC controller, one analog output current wiring port is connected with an analog current output end of the PLC controller, one analog output reference zero wiring port is connected with an output common ground end of the PLC controller, one power supply reference zero wiring port is connected with a negative electrode of the power supply box, other output wiring ports Q0.0-Q0.7 and Q1.0-Q1.1 are respectively connected with output ends Q0.0-Q1.1 of the PLC controller; the electromagnetic relay group is respectively connected with the output ends Q0.0-Q1.1 of the PLC controller; the automatic control device comprises a shifting switch group, a point control switch group, a gear selector, a gear box electromagnetic valve, an electric vortex loader, a frequency converter, a PLC (programmable logic controller) controller and a gear box test working condition.
As a preferable scheme: the shifting switch group, the point control switch group, the function switch/output wiring port group and the electromagnetic relay group are arranged on the same insulating plate according to function dividing blocks; two switches are arranged on the shell of the control box and are respectively a switch of the power box and a switch of the power supply of the PLC.
As a preferable scheme: the electromagnetic relay group comprises 8 electromagnetic relays, the toggle switch group comprises 14 toggle switches, the point control switch group comprises 8 point control switches, and the output wiring port group comprises 14 wiring ports.
As a preferable scheme: the PLC controller adopts Siemens S7-200, the power supply box adopts 24V direct current, and the maximum output frequency of the electromagnetic relay is 1Hz.
In order to achieve the above object of the second invention, the present invention adopts the following technical scheme:
the method for adjusting the test working condition of the gear box adopts any one of the adjusting devices, and comprises the following steps:
step 1, the test working condition is rated rotation speed and rated load, 1000 cycles are carried out, and the reversing of the gear box is carried out in an idle empty load state;
step 2, according to test requirements, a single circulation gear box test operation flow is as follows: gear box neutral gear-motor speed is lifted to gear box idle speed-gear box forward gear-motor speed is lifted to gear box rated speed-loader load is added to full load-operation for 5 min-loader load is unloaded to zero-motor speed is reduced to gear box idle speed-gear box neutral gear-gear box reverse gear-motor speed is lifted to gear box rated speed-loader load is added to full load-operation for 5 min-loader load is unloaded to zero-motor speed is reduced to gear box idle speed-gear box neutral gear;
and 3, distributing an I0.0 switch in the shifting switch group (2) as a control program start-stop switch, connecting a frequency converter multistage speed regulation terminal through a relay 1 and a relay 2 to realize motor multistage speed regulation, respectively connecting a gear box forward electromagnetic valve and a reverse electromagnetic valve through digital quantity output wiring ports Q0.0 and Q0.1 to realize gear control, directly controlling the load size through an analog quantity output wiring port V and connecting a control voltage input end of an eddy current loader, setting a PLC control program according to each input and output process logic, and finishing the regulation of the working condition of the gear box.
As a preferable scheme: the specific control process of the step 3 is as follows:
when the start-stop switch I0.0 is closed, the coil of the relay 1 is electrified, and the auxiliary contact is closed to control the rotating speed of the variable frequency motor to rise to the idling rotating speed of the gear box; then the digital output wiring port Q0.0 outputs a 24V direct-current voltage signal, the electromagnetic valve of the gear box is electrified, and the gear box is connected with a row in a following way; after the connection, the coil of the relay 2 is electrified, the auxiliary contact is closed to control the rotating speed of the variable frequency motor to be increased to the rated rotating speed of the gear box, and the analog output wiring port V outputs a signal to control the eddy current loader to load to the rated load of the gear box; after 5min of operation, the analog output wiring port V stops outputting signals, the load of the electric vortex loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, and the auxiliary contact is disconnected to control the rotating speed of the variable frequency motor to be reduced to the idle rotating speed of the gear box; then the digital output wiring port Q0.0 stops outputting the direct current voltage signal, the electromagnetic valve of the gear box in the vehicle is powered off, the gear box is in neutral position, the digital output Q0.1 outputs the 24V direct current voltage signal after 5s, the electromagnetic valve of the gear box in the reverse direction is powered on, and the gear box in the reverse direction is connected; after the connection, the coil of the relay 2 is electrified, the auxiliary contact is closed to control the rotating speed of the variable frequency motor to be increased to the rated rotating speed of the gear box, and the analog output wiring port V outputs a signal to control the eddy current loader to load to the rated load of the gear box; after 5min of operation, the analog output wiring port V stops outputting signals, the load of the electric vortex loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, and the auxiliary contact is disconnected to control the rotating speed of the variable frequency motor to be reduced to the idle rotating speed of the gear box; then the digital output wiring port Q0.1 stops outputting the direct-current voltage signal, the electromagnetic valve of the gear box in the vehicle is powered off, the gear box is in neutral position, and the gear box loading test is completed in one cycle; and then the gear box test working condition adjusting device circularly outputs signals, automatically controls the gear box load test, sets the output signals to zero when the start-stop switch I0.0 is disconnected, and the electric vortex loader is unloaded to zero, the gear box is in neutral position, and the driving motor is stopped.
As a preferable scheme: in other test projects, the gearbox test condition adjusting device is only used as an analog gear selector and is used for manually controlling the connection and disconnection of the gearbox; the method comprises the following specific steps: defining I0.1 as a test mode change-over switch, wherein when I0.1 is disconnected, the test working condition adjusting device is in an automatic continuous reversing loading test mode, and when I0.1 is closed, the gearbox test working condition adjusting device is only used as an analog gear selector; in the mode of the analog gear selector, I0.2 is defined as a gear box forward combination switch, I0.3 is defined as a gear box reverse combination switch, when I0.2 is closed, a digital quantity output wiring port Q0.0 outputs a 24V direct current voltage signal, a gear box forward electromagnetic valve is electrified, and the gear box forward is connected; when I0.3 is closed, the digital output wiring port Q0.1 outputs a 24V direct-current voltage signal, the reversing electromagnetic valve of the gear box is electrified, and the gear box is connected in a reversing way.
By adopting the technical scheme, the invention has the following advantages:
1. all components are packaged in the suitcase, so that the suitcase is convenient to carry; 2. each control switch, the output wiring port and the relay are arranged on the same insulating plate, and the operation panel is concise and clear; 3. the output wiring port adopts a banana female head which can be directly plugged into and pulled out of the male head, so that wiring is facilitated; 4. through PLC logic control, automatic adjustment of motor rotation speed, gear box gear and gear box load is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not limit the application.
FIG. 1 is a schematic view of a usage scenario of the present invention;
FIG. 2 is a schematic diagram of the installation of electrical components of the present invention;
FIG. 3 is a schematic diagram of the output port set of the present invention;
FIG. 4 is a schematic diagram of the wiring of the set of toggle switches and the set of point switches of the present invention;
fig. 5 is a schematic diagram of the wiring of the electromagnetic relay set of the present invention.
The marks in the drawings are: 1. a PLC controller; 2. a toggle switch group; 3. a point control switch group; 4. an output wiring port group; 5. a function control switch group; 6. a function switch; 7. an electromagnetic relay group; 8. and a power supply box.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the gearbox test condition adjusting device shown in the figures 1 to 5 comprises a control box, a PLC (programmable logic controller) 1, a shifting switch group 2, a point control switch group 3, an output wiring port group 4, an electromagnetic relay group 7 and a power supply box 8 which are all integrated in the control box; the shifting switch group 2 is connected with switching value input terminals I0.0-I1.5 of the PLC controller 1, the point control switch 3 is connected with switching value input terminals I0.0-I0.7 of the PLC controller 1, and input enabling control and input mode switching are performed between the shifting switch group 2 and the point control switch group 3 through the function control switch group 5 and the function switch 6 which are connected in series; the power supply box 8 is connected with an output power supply end of the PLC controller 1 and supplies power to an output part of the PLC controller 1; one analog output voltage wiring port in the output wiring port group 4 is connected with an analog voltage output end of the PLC controller 1, one analog output current wiring port is connected with an analog current output end of the PLC controller 1, one analog output reference zero wiring port is connected with an output common ground end of the PLC controller 1, one power supply reference zero wiring port is connected with a negative electrode of the power supply box 8, and other output wiring ports Q0.0-Q0.7 and Q1.0-Q1.1 are respectively connected with output ends Q0.0-Q1.1 of the PLC controller 1; the electromagnetic relay group 7 is respectively connected with the output ends Q0.0-Q1.1 of the PLC controller 1; the shift switch group 2 and the point control switch group 3 are used for simulating a start-stop switch and a gear selector of the system, the output wiring port group 4 comprises a digital quantity output wiring port and an analog quantity output wiring port, the digital quantity output wiring port is connected with a gearbox electromagnetic valve, the analog quantity output wiring port is connected with an eddy current loader, the electromagnetic relay group 7 is connected with a frequency converter of a driving motor, and the state of each output signal is controlled through the PLC controller 1, so that the automatic adjustment of the test working condition of the gearbox is controlled.
The shifting switch group 2, the point control switch group 3, the function control switch group 5, the function switch 6/output wiring port group 4 and the electromagnetic relay group 7 are arranged on the same insulating plate according to function division blocks; two switches are arranged on the shell of the control box and are respectively a switch of the power box 8 and a switch of the power supply of the PLC controller 1.
The PLC controller adopts Siemens S7-200, the power box 8 adopts 24V direct current, and the maximum output frequency of the electromagnetic relay is 1Hz. The two switches on the shell of the control box are a 24V direct current power supply switch and a PLC power supply switch from outside to inside. Wherein an internal 24V dc power supply powers the output portion of the PLC. After the start-up, the PLC starts running the program and works normally. The control box plate is provided with 14 output wiring ports, wherein one analog output voltage, one analog output current, one analog output reference zero point, one 24V power output port and ten output ends Q0.0-Q0.7 and Q1.0-Q1.1; two groups of input switching values are arranged on the control box plate, 14 of the input switching values are dial switches, and 8 of the input switching values are point control switches and are used for controlling the on-off of the input switching values. The control box plate is provided with 5 function control switches which are standby, a standby output main switch, I1.0-I1.5 enabling switches and a conversion/button control mode conversion switch, when the output main switch is opened, 10 output interfaces and 8 relays on the plate surface can be normally used, and the output voltage is 24V; the control box plate is provided with 8 electromagnetic relays, and the electromagnetic relays can also be used for controlling the on-off of the relays to control an external wiring circuit, when the output end outputs 24V signals, the normally closed end of the corresponding relay is changed to be normally open, and the normally open end is changed to be normally closed.
The input switching value of the invention adopts a shifting switch and a point control switch, and is used for meeting the requirements of different input characteristics; the output mode adopts three modes of analog quantity output, digital quantity output and relay output, wherein the analog quantity output is connected with the electric vortex loader to directly control the load, the relay output is connected with the frequency converter to control the motor rotating speed, the digital quantity output is connected with the electromagnetic valve of the gear box to control the gear, the PLC is used as a core to complete logic control, and the automatic adjustment of the working condition of the gear box is realized.
The invention is internally provided with the 24V direct current power supply box, the output wiring port can directly output 24V direct current voltage, and the electromagnetic valve can be controlled without an external point power supply.
A method for adjusting the test working condition of a gear box adopts the adjusting device and comprises the following steps:
step 1, the test working condition is rated rotation speed and rated load, 1000 cycles are carried out, and the reversing of the gear box is carried out in an idle empty load state;
step 2, according to test requirements, a single circulation gear box test operation flow is as follows: gear box neutral gear-motor speed is lifted to gear box idle speed-gear box forward gear-motor speed is lifted to gear box rated speed-loader load is added to full load-operation for 5 min-loader load is unloaded to zero-motor speed is reduced to gear box idle speed-gear box neutral gear-gear box reverse gear-motor speed is lifted to gear box rated speed-loader load is added to full load-operation for 5 min-loader load is unloaded to zero-motor speed is reduced to gear box idle speed-gear box neutral gear;
and 3, distributing an I0.0 switch in the shifting switch group (2) as a control program start-stop switch, connecting a frequency converter multistage speed regulation terminal through a relay 1 and a relay 2 to realize motor multistage speed regulation, respectively connecting a gear box forward electromagnetic valve and a reverse electromagnetic valve through digital quantity output wiring ports Q0.0 and Q0.1 to realize gear control, directly controlling the load size through an analog quantity output wiring port V and connecting a control voltage input end of an eddy current loader, setting a PLC control program according to each input and output process logic, and finishing the regulation of the working condition of the gear box.
The specific control process in the step 3 is as follows:
when the start-stop switch I0.0 is closed, the coil of the relay 1 is electrified, and the auxiliary contact is closed to control the rotating speed of the variable frequency motor to rise to the idling rotating speed of the gear box; then the digital output wiring port Q0.0 outputs a 24V direct-current voltage signal, the electromagnetic valve of the gear box is electrified, and the gear box is connected with a row in a following way; after the connection, the coil of the relay 2 is electrified, the auxiliary contact is closed to control the rotating speed of the variable frequency motor to be increased to the rated rotating speed of the gear box, and the analog output wiring port V outputs a signal to control the eddy current loader to load to the rated load of the gear box; after 5min of operation, the analog output wiring port V stops outputting signals, the load of the electric vortex loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, and the auxiliary contact is disconnected to control the rotating speed of the variable frequency motor to be reduced to the idle rotating speed of the gear box; then the digital output wiring port Q0.0 stops outputting the direct current voltage signal, the electromagnetic valve of the gear box in the vehicle is powered off, the gear box is in neutral position, the digital output Q0.1 outputs the 24V direct current voltage signal after 5s, the electromagnetic valve of the gear box in the reverse direction is powered on, and the gear box in the reverse direction is connected; after the connection, the coil of the relay 2 is electrified, the auxiliary contact is closed to control the rotating speed of the variable frequency motor to be increased to the rated rotating speed of the gear box, and the analog output wiring port V outputs a signal to control the eddy current loader to load to the rated load of the gear box; after 5min of operation, the analog output wiring port V stops outputting signals, the load of the electric vortex loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, and the auxiliary contact is disconnected to control the rotating speed of the variable frequency motor to be reduced to the idle rotating speed of the gear box; then the digital output wiring port Q0.1 stops outputting the direct-current voltage signal, the electromagnetic valve of the gear box in the vehicle is powered off, the gear box is in neutral position, and the gear box loading test is completed in one cycle; and then the gear box test working condition adjusting device circularly outputs signals, automatically controls the gear box load test, sets the output signals to zero when the start-stop switch I0.0 is disconnected, and the electric vortex loader is unloaded to zero, the gear box is in neutral position, and the driving motor is stopped.
In other test projects, the gearbox test condition adjusting device is only used as an analog gear selector and is used for manually controlling the connection and disconnection of the gearbox; the method comprises the following specific steps: defining I0.1 as a test mode change-over switch, wherein when I0.1 is disconnected, the test working condition adjusting device is in an automatic continuous reversing loading test mode, and when I0.1 is closed, the gearbox test working condition adjusting device is only used as an analog gear selector; in the mode of the analog gear selector, I0.2 is defined as a gear box forward combination switch, I0.3 is defined as a gear box reverse combination switch, when I0.2 is closed, a digital quantity output wiring port Q0.0 outputs a 24V direct current voltage signal, a gear box forward electromagnetic valve is electrified, and the gear box forward is connected; when I0.3 is closed, the digital output wiring port Q0.1 outputs a 24V direct-current voltage signal, the reversing electromagnetic valve of the gear box is electrified, and the gear box is connected in a reversing way.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art without departing from the spirit and principles of the invention, and any simple modification, equivalent variation and modification of the above embodiments in light of the technical principles of the invention may be made within the scope of the present invention.
Claims (7)
1. A gearbox test condition adjusting device is characterized in that: the intelligent control device comprises a control box, and a PLC (programmable logic controller) controller (1), a shifting switch group (2), a point control switch group (3), an output wiring port group (4), an electromagnetic relay group (7) and a power supply box (8) which are all integrated in the control box; the shifting switch group (2) is connected with switching value input terminals I0.0-I1.5 of the PLC (1), the point control switch (3) group is connected with switching value input terminals I0.0-I0.7 of the PLC (1), and input enabling control and input mode switching are performed between the shifting switch group (2) and the point control switch group (3) through the function control switch group (5) and the function switch (6) in series connection; the power supply box (8) is connected with an output power supply end of the PLC (1) and supplies power to an output part of the PLC (1); one analog output voltage wiring port in the output wiring port group (4) is connected with an analog voltage output end of the PLC (1), one analog output current wiring port is connected with an analog current output end of the PLC (1), one analog output reference zero wiring port is connected with an output common ground end of the PLC (1), one power reference zero wiring port is connected with a negative electrode of the power box (8), and other output wiring ports Q0.0-Q0.7 and Q1.0-Q1.1 are respectively connected with output ends Q0.0-Q1.1 of the PLC (1); the electromagnetic relay group (7) is respectively connected with the output ends Q0.0-Q1.1 of the PLC (1); the automatic control device comprises a shifting switch group (2) and a point control switch group (3), wherein the shifting switch group is used for simulating a start-stop switch and a gear selector of a system, an output wiring port group (4) comprises a digital quantity output wiring port and an analog quantity output wiring port, the digital quantity output wiring port is connected with a gearbox electromagnetic valve, the analog quantity output wiring port is connected with an eddy current loader, the electromagnetic relay group (7) is connected with a frequency converter of a driving motor, and the state of each output signal is controlled through a PLC (programmable logic controller) 1, so that the automatic control of the test working condition of the gearbox is controlled.
2. The gearbox test condition adjustment device of claim 1, wherein: the shifting switch group (2), the point control switch group (3), the function control switch group (5), the function switch (6), the output wiring port group (4) and the electromagnetic relay group (7) are arranged on the same insulating plate according to functional partition blocks; two switches are arranged on the shell of the control box and are respectively a switch of the power box (8) and a switch of the power supply of the PLC (1).
3. The gearbox test condition adjustment device of claim 1, wherein: the electromagnetic relay group (7) comprises 8 electromagnetic relays, the toggle switch group (2) comprises 14 toggle switches, the point control switch group (3) comprises 8 point control switches, and the output wiring port group (4) comprises 14 wiring ports.
4. A gearbox test condition adjustment device according to claim 3, wherein: the PLC controller adopts Siemens S7-200, the power supply box (8) adopts 24V direct current, and the maximum output frequency of the electromagnetic relay is 1Hz.
5. A method for adjusting the test working condition of a gear box is characterized by comprising the following steps of: use of an adjustment device according to any of the preceding claims 1 to 4, comprising the following steps:
step 1, the test working condition is rated rotation speed and rated load, 1000 cycles are carried out, and the reversing of the gear box is carried out in an idle empty load state;
step 2, according to test requirements, a single circulation gear box test operation flow is as follows: gear box neutral gear-motor speed is lifted to gear box idle speed-gear box forward gear-motor speed is lifted to gear box rated speed-loader load is added to full load-operation for 5 min-loader load is unloaded to zero-motor speed is reduced to gear box idle speed-gear box neutral gear-gear box reverse gear-motor speed is lifted to gear box rated speed-loader load is added to full load-operation for 5 min-loader load is unloaded to zero-motor speed is reduced to gear box idle speed-gear box neutral gear;
and 3, distributing an I0.0 switch in the shifting switch group (2) as a control program start-stop switch, connecting a frequency converter multistage speed regulation terminal through a relay 1 and a relay 2 to realize motor multistage speed regulation, respectively connecting a gear box forward electromagnetic valve and a reverse electromagnetic valve through digital quantity output wiring ports Q0.0 and Q0.1 to realize gear control, directly controlling the load size through an analog quantity output wiring port V and connecting a control voltage input end of an eddy current loader, setting a PLC control program according to each input and output process logic, and finishing the regulation of the working condition of the gear box.
6. The method for adjusting the test conditions of the gearbox according to claim 5, wherein the method comprises the following steps: the specific control process of the step 3 is as follows:
when the start-stop switch I0.0 is closed, the coil of the relay 1 is electrified, and the auxiliary contact is closed to control the rotating speed of the variable frequency motor to rise to the idling rotating speed of the gear box; then the digital output wiring port Q0.0 outputs a 24V direct-current voltage signal, the electromagnetic valve of the gear box is electrified, and the gear box is connected with a row in a following way; after the connection, the coil of the relay 2 is electrified, the auxiliary contact is closed to control the rotating speed of the variable frequency motor to be increased to the rated rotating speed of the gear box, and the analog output wiring port V outputs a signal to control the eddy current loader to load to the rated load of the gear box; after 5min of operation, the analog output wiring port V stops outputting signals, the load of the electric vortex loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, and the auxiliary contact is disconnected to control the rotating speed of the variable frequency motor to be reduced to the idle rotating speed of the gear box; then the digital quantity output wiring port Q0.0 stops outputting the direct current voltage signal, the electromagnetic valve on the vehicle of the gear box is powered off, the gear box is in neutral position, the digital quantity output wiring port Q0.1 outputs the 24V direct current voltage signal after 5s, the electromagnetic valve on the reverse of the gear box is powered on, and the gear box is connected in a reverse mode; after the connection, the coil of the relay 2 is electrified, the auxiliary contact is closed to control the rotating speed of the variable frequency motor to be increased to the rated rotating speed of the gear box, and the analog output wiring port V outputs a signal to control the eddy current loader to load to the rated load of the gear box; after 5min of operation, the analog output wiring port V stops outputting signals, the load of the electric vortex loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, and the auxiliary contact is disconnected to control the rotating speed of the variable frequency motor to be reduced to the idle rotating speed of the gear box; then the digital output wiring port Q0.1 stops outputting the direct-current voltage signal, the electromagnetic valve of the gear box in the vehicle is powered off, the gear box is in neutral position, and the gear box loading test is completed in one cycle; and then the gear box test working condition adjusting device circularly outputs signals, automatically controls the gear box load test, sets the output signals to zero when the start-stop switch I0.0 is disconnected, and the electric vortex loader is unloaded to zero, the gear box is in neutral position, and the driving motor is stopped.
7. The method for adjusting the test conditions of the gearbox according to claim 5, wherein the method comprises the following steps: in other test projects, the gearbox test condition adjusting device is only used as an analog gear selector and is used for manually controlling the connection and disconnection of the gearbox; the method comprises the following specific steps: defining I0.1 as a test mode change-over switch, wherein when I0.1 is disconnected, the test working condition adjusting device is in an automatic continuous reversing loading test mode, and when I0.1 is closed, the gearbox test working condition adjusting device is only used as an analog gear selector; in the mode of the analog gear selector, I0.2 is defined as a gear box forward combination switch, I0.3 is defined as a gear box reverse combination switch, when I0.2 is closed, a digital quantity output wiring port Q0.0 outputs a 24V direct current voltage signal, a gear box forward electromagnetic valve is electrified, and the gear box forward is connected; when I0.3 is closed, the digital output wiring port Q0.1 outputs a 24V direct-current voltage signal, the reversing electromagnetic valve of the gear box is electrified, and the gear box is connected in a reversing way.
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