CN114115095A - 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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- CN114115095A CN114115095A CN202111226330.9A CN202111226330A CN114115095A CN 114115095 A CN114115095 A CN 114115095A CN 202111226330 A CN202111226330 A CN 202111226330A CN 114115095 A CN114115095 A CN 114115095A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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 dial switch group, a point control switch group, an output wiring port group, an electromagnetic relay group and a power box; the dial switch group and the point control switch group are both connected with a PLC controller, and the dial switch group and the point control switch group are connected in series to control the switch group and the function switch; the power supply box is connected with an output power supply end of the PLC, the dial switch group and the point control switch group are used for simulating a system start-stop switch and a gear selector, the output wiring port group comprises a digital output wiring port and an analog output wiring port, the digital output wiring port is connected with a gear box electromagnetic valve, the analog 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 each output signal state is controlled through the PLC so as to control automatic adjustment of the test working condition of the gear box.
Description
Technical Field
The invention belongs to the technical field of control of a test process of a gearbox, and particularly relates to a device and a method for adjusting test working conditions of the gearbox.
Background
The test working condition of the existing gearbox is adjusted, a test operator mostly adjusts the gear selector of the gearbox, the motor potentiometer and the potentiometer of the loader to achieve the working condition required by the test, the test requirement can be met for the test project with constant working condition, however, the test working condition required by the existing HCQ300 marine gearbox needs continuous reversing, variable speed and variable load, and the working condition required by the test is difficult to achieve through manual adjustment, so that a device capable of completing the adjustment of various test working conditions is required to meet different test requirements.
Disclosure of Invention
In order to solve the technical problems, the first object of the invention is to provide a device for adjusting the test working condition of a gearbox, which can reduce manual intervention and overcome the defects of the existing gearbox test in the aspect of adjusting the complex test working condition; the invention also provides a method for adjusting the test working condition of the gearbox.
In order to achieve the above object of the first invention, the invention adopts the following technical solutions:
a device for adjusting the test working condition of a gear box comprises a control box, a PLC, a dial switch group, a point control switch group, an output wiring port group, an electromagnetic relay group and a power supply box, wherein the PLC, the dial switch group, the point control switch group, the output wiring port group, the electromagnetic relay group and the power supply box are all integrated in the control box; the dial switch group is connected with the switching value input terminals I0.0-I1.5 of the PLC, the point control switch group is connected with the switching value input terminals I0.0-I0.7 of the PLC, and the dial switch group and the point control switch group are connected in series to control the switch group and the function switch to carry out input enabling control and input mode switching; the power supply box is connected with an output power supply end of the PLC and supplies power to an output part of the PLC; one analog output voltage wiring port in the output wiring port group is connected with an analog voltage output 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 reference zero wiring port is connected with a negative electrode of the power box, and the other output wiring ports Q0.0-Q0.7 and Q1.0-Q1.1 are respectively connected with an output end Q0.0-Q1.1 of the PLC controller; the electromagnetic relay group is respectively connected with the output end Q0.0-Q1.1 of the PLC controller; the dial switch group and the point control switch group are used for simulating a system start-stop switch and a gear selector, the output wiring port group comprises a digital output wiring port and an analog output wiring port, the digital output wiring port is connected with a gear box electromagnetic valve, the analog output wiring port is connected with an eddy current loader, an electromagnetic relay group is connected with a frequency converter of a driving motor, and each output signal state is controlled through a PLC controller, so that the automatic adjustment of the test working condition of the gear box is controlled.
As a preferable scheme: the dial switch group, the point control switch group, the function switch/output wiring port group and the electromagnetic relay group are divided into blocks according to functions and are arranged on the same insulating plate; and the shell of the control box is provided with two switches which are respectively a switch of the power box and a switch of a power supply of the PLC controller.
As a preferable scheme: the electromagnetic relay group includes 8 electromagnetic relay, dial the position switch group and include 14 and dial the position switch, point accuse switch group includes 8 point accuse switches, output wiring mouth group includes 14 wiring mouths.
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 1 Hz.
In order to achieve the above object of the second invention, the invention adopts the following technical scheme:
a method for adjusting the test working condition of a gearbox adopts the adjusting device, and comprises the following steps:
and 3, distributing an I0.0 switch in the dial switch group (2) as a control program start-stop switch, connecting a frequency converter multi-stage speed regulation terminal through the relay 1 and the relay 2 to realize motor multi-stage speed regulation, connecting a gear box forward electromagnetic valve and a reversing electromagnetic valve through digital output wiring ports Q0.0 and Q0.1 respectively to realize gear control, connecting an eddy current loader through an analog output wiring port V to control a voltage input end to directly control the load size, and setting a PLC control program according to input and output process logics to finish 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 be increased to the idle speed of the gear box; then a 24V direct current voltage signal is output by a digital quantity output wiring port Q0.0, the gear box is electrified along with a vehicle electromagnetic valve, and the gear box is connected with a row along with a vehicle; after the connection and drainage, a coil of the electric appliance 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 an analog output wiring port V outputs a signal to control the eddy current loader to be loaded to the rated load of the gear box; after the operation is carried out for 5min, the analog output wiring port V stops outputting signals, the load of the eddy current loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, the auxiliary contact is disconnected, and the rotating speed of the variable frequency motor is controlled to be reduced to the idle rotating speed of the gear box; then, the digital output wiring port Q0.0 stops outputting direct current voltage signals, the gear box is powered off along with the vehicle electromagnetic valve, the gear box is in neutral position, after 5s, the digital output Q0.1 outputs 24V direct current voltage signals, the gear box is powered on with the reverse electromagnetic valve, and the gear box is connected in a row in a reverse mode; after the connection and drainage, a coil of the electric appliance 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 an analog output wiring port V outputs a signal to control the eddy current loader to be loaded to the rated load of the gear box; after the operation is carried out for 5min, the analog output wiring port V stops outputting signals, the load of the eddy current loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, the auxiliary contact is disconnected, and the rotating speed of the variable frequency motor is controlled to be reduced to the idle rotating speed of the gear box; then, the digital quantity output wiring port Q0.1 stops outputting direct current voltage signals, the electromagnetic valve of the gear box is powered off along with the vehicle, the gear box is in neutral position, and the gear box loading test finishes a cycle; and then, the gear box test working condition adjusting device circularly outputs signals to automatically control a gear box load test, when the start-stop switch I0.0 is disconnected, each output signal is set to be zero, the eddy current loader is unloaded to be zero, the gear box is in a neutral gear position, and the driving motor is stopped.
As a preferable scheme: in other test items, the gear box test working condition adjusting device is only used as a simulated gear selector and used for manually controlling the gear box to be connected or disconnected; the method comprises the following specific steps: defining I0.1 as a test mode change-over switch, wherein the test working condition adjusting device is in an automatic continuous reversing loading test mode when I0.1 is switched off, and the test working condition adjusting device of the gearbox is only used as a simulated gear selector when I0.1 is switched on; in the mode of the analog gear selector, defining I0.2 as a forward combination switch of the gear box and I0.3 as a reverse combination switch of the gear box, when I0.2 is closed, a digital quantity output wiring port Q0.0 outputs a 24V direct-current voltage signal, a forward electromagnetic valve of the gear box is electrified, and the gear box is connected in a forward mode; when I0.3 is closed, the digital output wiring port Q0.1 outputs a 24V direct-current voltage signal, the gear box reversing electromagnetic valve is electrified, and the gear box is reversed and connected.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. all the components are packaged in a suitcase, so that the carrying is convenient; 2. each control switch, the output wiring port and the relay are arranged on the same insulating plate, and the operation panel is simple and clear; 3. the output wiring port adopts a banana female head, can be directly plugged with the male head, and is convenient for wiring; 4. the automatic regulation of the rotating speed of the motor, the gear of the gear box and the load of the gear box is realized through the logic control of a PLC.
Drawings
The accompanying drawings, which 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 are not intended to limit the application.
FIG. 1 is a schematic view of a usage scenario of the present invention;
FIG. 2 is a schematic view of the installation of the electrical components of the present invention;
FIG. 3 is a schematic diagram of the wiring of the output wiring port set of the present invention;
FIG. 4 is a schematic diagram of the connection of the toggle switch set and the point control switch set according to the present invention;
fig. 5 is a schematic diagram of the wiring of the electromagnetic relay pack of the present invention.
The labels in the figures 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. power supply box.
Detailed Description
The invention will be further illustrated with reference to the following examples and drawings:
the device for adjusting the test working condition of the gearbox as shown in fig. 1 to 5 comprises a control box, and a PLC (programmable logic controller) 1, a dial 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 dial switch group 2 is connected with the switching value input terminals I0.0-I1.5 of the PLC controller 1, the point control switch group 3 is connected with the switching value input terminals I0.0-I0.7 of the PLC controller 1, and the dial switch group 2 and the point control switch group 3 are connected in series with the function control switch group 5 and the function switch 6 to carry out input enabling control and input mode switching; 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 quantity output voltage wiring port in the output wiring port group 4 is connected with an analog quantity voltage output end of the PLC controller 1, one analog quantity output current wiring port is connected with an analog quantity current output end of the PLC controller 1, one analog quantity 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 the negative electrode of the power supply box 8, and the other output wiring ports Q0.0-Q0.7 and Q1.0-Q1.1 are respectively connected with the output end Q0.0-Q1.1 of the PLC controller 1; the electromagnetic relay group 7 is respectively connected with the output end Q0.0-Q1.1 of the PLC controller 1; the dial switch group 2 and the point control switch group 3 are used for simulating a system start-stop switch and a gear selector, the output wiring port group 4 comprises a digital output wiring port and an analog output wiring port, the digital output wiring port is connected with a gear box electromagnetic valve, the analog 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 each output signal state is controlled through the PLC controller 1, so that the automatic adjustment of the test working condition of the gear box is controlled.
The dial 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 divided into blocks according to functions and are arranged on the same insulating plate; and the shell of the control box is provided with two switches which are respectively a switch of the power box 8 and a switch of a power supply of the PLC controller 1.
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 1 Hz. Two switches on the shell of the control box are respectively a switch of a 24V direct current power supply and a switch of a PLC power supply from outside to inside. Wherein an internal 24V dc power supply supplies the output section of the PLC. After the PLC is started, the PLC starts to run a program and works normally. The control box plate is provided with 14 output wiring ports, wherein one analog quantity output voltage, one analog quantity output current, one analog quantity output reference zero point, one 24V power output interface, the output ends Q0.0-Q0.7 and Q1.0-Q1.1 are ten in total; the control box plate is provided with two groups of input switching values, wherein 14 are toggle switches, and 8 are point control switches which are all used for controlling the on-off of the input switching values. The control box plate is provided with 5 function control switches which are respectively standby, output main switches, I1.0-I1.5 enable switches and a conversion/button control mode conversion switch, when the output main switches are turned on, 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 in total, and can also be used for controlling the on-off of the relays to control an external wiring circuit, when the output end outputs a 24V signal, the normally closed end of the corresponding relay is normally opened, and the normally open end is normally closed.
The input switching value of the invention adopts a toggle switch and a point control switch for meeting the requirements of different input characteristics; the output mode adopts three modes of analog output, digital output and relay output, the analog output is connected with the eddy current loader and can directly control the load size, the relay output is connected with the frequency converter to realize the control of the rotating speed of the motor, the digital output can be connected with the electromagnetic valve of the gear box to realize the gear control, the PLC is used as the core to complete the logic control, and the automatic regulation of the working condition of the gear box is realized.
The built-in 24V direct current power supply box is arranged, the output wiring port can directly output 24V direct current voltage, and the electromagnetic valve can be controlled without an external contact power supply.
A method for adjusting the test working condition of a gear box adopts the adjusting device and comprises the following steps:
and 3, distributing an I0.0 switch in the dial switch group (2) as a control program start-stop switch, connecting a frequency converter multi-stage speed regulation terminal through the relay 1 and the relay 2 to realize motor multi-stage speed regulation, connecting a gear box forward electromagnetic valve and a reversing electromagnetic valve through digital output wiring ports Q0.0 and Q0.1 respectively to realize gear control, connecting an eddy current loader through an analog output wiring port V to control a voltage input end to directly control the load size, and setting a PLC control program according to input and output process logics to finish the regulation of the working condition of the gear box.
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 be increased to the idle speed of the gear box; then a 24V direct current voltage signal is output by a digital quantity output wiring port Q0.0, the gear box is electrified along with a vehicle electromagnetic valve, and the gear box is connected with a row along with a vehicle; after the connection and drainage, a coil of the electric appliance 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 an analog output wiring port V outputs a signal to control the eddy current loader to be loaded to the rated load of the gear box; after the operation is carried out for 5min, the analog output wiring port V stops outputting signals, the load of the eddy current loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, the auxiliary contact is disconnected, and the rotating speed of the variable frequency motor is controlled to be reduced to the idle rotating speed of the gear box; then, the digital output wiring port Q0.0 stops outputting direct current voltage signals, the gear box is powered off along with the vehicle electromagnetic valve, the gear box is in neutral position, after 5s, the digital output Q0.1 outputs 24V direct current voltage signals, the gear box is powered on with the reverse electromagnetic valve, and the gear box is connected in a row in a reverse mode; after the connection and drainage, a coil of the electric appliance 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 an analog output wiring port V outputs a signal to control the eddy current loader to be loaded to the rated load of the gear box; after the operation is carried out for 5min, the analog output wiring port V stops outputting signals, the load of the eddy current loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, the auxiliary contact is disconnected, and the rotating speed of the variable frequency motor is controlled to be reduced to the idle rotating speed of the gear box; then, the digital quantity output wiring port Q0.1 stops outputting direct current voltage signals, the electromagnetic valve of the gear box is powered off along with the vehicle, the gear box is in neutral position, and the gear box loading test finishes a cycle; and then, the gear box test working condition adjusting device circularly outputs signals to automatically control a gear box load test, when the start-stop switch I0.0 is disconnected, each output signal is set to be zero, the eddy current loader is unloaded to be zero, the gear box is in a neutral gear position, and the driving motor is stopped.
In other test items, the gear box test working condition adjusting device is only used as a simulated gear selector and used for manually controlling the gear box to be connected or disconnected; the method comprises the following specific steps: defining I0.1 as a test mode change-over switch, wherein the test working condition adjusting device is in an automatic continuous reversing loading test mode when I0.1 is switched off, and the test working condition adjusting device of the gearbox is only used as a simulated gear selector when I0.1 is switched on; in the mode of the analog gear selector, defining I0.2 as a forward combination switch of the gear box and I0.3 as a reverse combination switch of the gear box, when I0.2 is closed, a digital quantity output wiring port Q0.0 outputs a 24V direct-current voltage signal, a forward electromagnetic valve of the gear box is electrified, and the gear box is connected in a forward mode; when I0.3 is closed, the digital output wiring port Q0.1 outputs a 24V direct-current voltage signal, the gear box reversing electromagnetic valve is electrified, and the gear box is reversed and connected.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principle and spirit of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (7)
1. The utility model provides a experimental operating mode adjusting device of gear box which characterized in that: the device comprises a control box, a PLC (programmable logic controller) controller (1), a dial switch group (2), a point control switch group (3), an output wiring port group (4), an electromagnetic relay group (7) and a power box (8), wherein the PLC controller, the dial switch group (2), the point control switch group (3), the output wiring port group and the electromagnetic relay group are all integrated in the control box; the dial switch group (2) is connected with switching value input terminals I0.0-I1.5 of the PLC (1), the point control switch group (3) is connected with switching value input terminals I0.0-I0.7 of the PLC (1), and the dial switch group (2) and the point control switch group (3) are connected in series with a function control switch group (5) and a function switch (6) to carry out input enabling control and input mode switching; 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 quantity output voltage wiring port in the output wiring port group (4) is connected with an analog quantity voltage output end of the PLC controller (1), one analog quantity output current wiring port is connected with an analog quantity current output end of the PLC controller (1), one analog quantity 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 the negative electrode of the power supply box (8), and the other output wiring ports Q0.0-Q0.7 and Q1.0-Q1.1 are respectively connected with the output end Q0.0-Q1.1 of the PLC controller (1); the electromagnetic relay group (7) is respectively connected with the output end Q0.0-Q1.1 of the PLC (1); the dial switch group (2) and the point control switch group (3) are used for simulating a system to start and stop a switch and a gear selector, the output wiring port group (4) comprises a digital output wiring port and an analog output wiring port, a gear box electromagnetic valve is connected with the digital output wiring port, an eddy current loader is connected with the analog output wiring port, a frequency converter of a driving motor is connected with an electromagnetic relay group (7), and each output signal state is controlled through a PLC (programmable logic controller) (1), so that the automatic adjustment of the test working condition of the gear box is controlled.
2. The experimental operating condition adjusting device of the gearbox as claimed in claim 1, wherein: the dial 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 divided into blocks according to functions and are arranged on the same insulating plate; and the shell of the control box is provided with two switches which are respectively a switch of the power box (8) and a switch of a power supply of the PLC (1).
3. The experimental operating condition adjusting device of the gearbox as claimed in claim 1, wherein: electromagnetic relay group (7) include 8 electromagnetic relay, dial position switch group (2) include 14 dial position switches, point accuse switch group (3) include 8 point accuse switches, output wiring mouth group (4) include 14 wiring mouths.
4. A gearbox test condition adjusting device according to claim 3, characterized in that: 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 1 Hz.
5. A method for adjusting the test working condition of a gearbox is characterized by comprising the following steps: the adjusting device of any one of the preceding claims 1 to 4 is used, and comprises the following steps:
step 1, performing 1000 cycles under the test condition of rated speed and rated load, and reversing the gearbox under the idle speed and no load state;
step 2, according to the test requirements, the single circulation gearbox test operation flow is as follows: neutral gear shift of gear box → rotational speed of motor is increased to idle speed of gear box → vehicle is suspended of gear box → rotational speed of motor is increased to rated rotational speed of gear box → loader load is added to full load → operation 5min → loader load is unloaded to zero → rotational speed of motor is decreased to idle speed of gear box → neutral gear shift of gear box → reverse gear shift of motor is increased to rated rotational speed of gear box → loader load is added to full load → operation 5min → loader load is unloaded to zero → rotational speed of motor is decreased to idle speed of gear box → neutral gear shift of gear box;
and 3, distributing an I0.0 switch in the dial switch group (2) as a control program start-stop switch, connecting a frequency converter multi-stage speed regulation terminal through the relay 1 and the relay 2 to realize motor multi-stage speed regulation, connecting a gear box forward electromagnetic valve and a reversing electromagnetic valve through digital output wiring ports Q0.0 and Q0.1 respectively to realize gear control, connecting an eddy current loader through an analog output wiring port V to control a voltage input end to directly control the load size, and setting a PLC control program according to input and output process logics to finish the regulation of the working condition of the gear box.
6. A gearbox test condition adjusting method according to claim 5, characterized in that: 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 be increased to the idle speed of the gear box; then a 24V direct current voltage signal is output by a digital quantity output wiring port Q0.0, the gear box is electrified along with a vehicle electromagnetic valve, and the gear box is connected with a row along with a vehicle; after the connection and drainage, a coil of the electric appliance 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 an analog output wiring port V outputs a signal to control the eddy current loader to be loaded to the rated load of the gear box; after the operation is carried out for 5min, the analog output wiring port V stops outputting signals, the load of the eddy current loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, the auxiliary contact is disconnected, and the rotating speed of the variable frequency motor is controlled to be reduced to the idle rotating speed of the gear box; then, the digital output wiring port Q0.0 stops outputting direct current voltage signals, the gear box is powered off along with the vehicle electromagnetic valve, the gear box is in neutral position, after 5s, the digital output Q0.1 outputs 24V direct current voltage signals, the gear box is powered on with the reverse electromagnetic valve, and the gear box is connected in a row in a reverse mode; after the connection and drainage, a coil of the electric appliance 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 an analog output wiring port V outputs a signal to control the eddy current loader to be loaded to the rated load of the gear box; after the operation is carried out for 5min, the analog output wiring port V stops outputting signals, the load of the eddy current loader is unloaded to zero, and meanwhile, the coil of the relay 2 is powered off, the auxiliary contact is disconnected, and the rotating speed of the variable frequency motor is controlled to be reduced to the idle rotating speed of the gear box; then, the digital quantity output wiring port Q0.1 stops outputting direct current voltage signals, the electromagnetic valve of the gear box is powered off along with the vehicle, the gear box is in neutral position, and the gear box loading test finishes a cycle; and then, the gear box test working condition adjusting device circularly outputs signals to automatically control a gear box load test, when the start-stop switch I0.0 is disconnected, each output signal is set to be zero, the eddy current loader is unloaded to be zero, the gear box is in a neutral gear position, and the driving motor is stopped.
7. A gearbox test condition adjusting method according to claim 5, characterized in that: in other test items, the gear box test working condition adjusting device is only used as a simulated gear selector and used for manually controlling the gear box to be connected or disconnected; the method comprises the following specific steps: defining I0.1 as a test mode change-over switch, wherein the test working condition adjusting device is in an automatic continuous reversing loading test mode when I0.1 is switched off, and the test working condition adjusting device of the gearbox is only used as a simulated gear selector when I0.1 is switched on; in the mode of the analog gear selector, defining I0.2 as a forward combination switch of the gear box and I0.3 as a reverse combination switch of the gear box, when I0.2 is closed, a digital quantity output wiring port Q0.0 outputs a 24V direct-current voltage signal, a forward electromagnetic valve of the gear box is electrified, and the gear box is connected in a forward mode; when I0.3 is closed, the digital output wiring port Q0.1 outputs a 24V direct-current voltage signal, the gear box reversing electromagnetic valve is electrified, and the gear box is reversed and connected.
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| CN202111226330.9A CN114115095B (en) | 2021-10-21 | 2021-10-21 | Gear box test working condition adjusting device and method |
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