CN111966016B - Measurement and control system of static load strength test system of tractor protective device - Google Patents
Measurement and control system of static load strength test system of tractor protective device Download PDFInfo
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- CN111966016B CN111966016B CN202010825885.4A CN202010825885A CN111966016B CN 111966016 B CN111966016 B CN 111966016B CN 202010825885 A CN202010825885 A CN 202010825885A CN 111966016 B CN111966016 B CN 111966016B
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- 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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a measurement and control system of a static load strength test system of a tractor protective device, which comprises a drive circuit, the drive circuit includes a first relay KAS1, a second relay KAS2, a third relay KAS3, a fourth relay KAS4, a fifth relay KAS5, a single-pole double-throw switch K, a start button SB1, a start button SB2, a start button SB3, a start button SB4, a switching power supply, an overflow valve YV, a first solenoid valve 1YA, a second solenoid valve 2YA, a third solenoid valve 3YA, a fourth solenoid valve 4YA, a fifth solenoid valve 5YA, a sixth solenoid valve 6YA, a first intermediate relay KAP1, a second intermediate relay KAP2, a third intermediate relay KAP3, a fourth intermediate relay KAP4, a fifth intermediate relay KAP5, a first PLC control switch SP1, a second PLC control switch SP3, a fourth PLC control switch SP4, a fifth PLC control switch SP5, and a sixth PLC control switch SP 6. The invention can meet the test requirements of large-size or large-tonnage ROPS and can automatically carry out overload test.
Description
Technical Field
The invention relates to a measurement and control system of a static load strength test system of a tractor protective device, belonging to the technical field of engineering machinery.
Background
Because the operation environment of the tractor is complex and severe, the gravity center of the tractor is high, the torque output is increased under the condition of large external load, and the ground is inclined or uneven, so that the tractor is easy to have a rollover accident, and a rollover protection device (ROPS) is a structure which is arranged on a vehicle and avoids or reduces the injury to a driver when the vehicle rolls over,
at present, the test method applied to the strength assessment of the tractor protective device comprises a dynamic test and a static test, and the dynamic test belongs to a destructive test, so that the requirements on conditions such as a test field and the like are strict, the test has the characteristics of no reproducibility and the like, and the application range is narrow; compared with a dynamic load test method, the static load test method has the advantages of good reproducibility and wide application range, can accurately measure the deformation of the ROPS under load, and is particularly suitable for test field examination of newly designed models.
The measurement and control system of the static load strength test system of the tractor protective device in the prior art has low efficiency of acquiring and processing test data, can not meet the test requirements of large models or large-tonnage ROPS and can not automatically carry out overload tests.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a measurement and control system of a static load strength test system of a tractor protective device, which can meet the test requirements of large-size or large-tonnage ROPS and can automatically carry out overload test, thereby improving the test efficiency and reducing the labor intensity.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention provides a measurement and control system of a static load strength test system of a tractor protective device, which comprises a driving circuit, wherein the driving circuit comprises a first relay KAS1, a second relay KAS2, a third relay KAS3, a fourth relay KAS4, a fifth relay KAS5, a single-pole double-throw switch K, a starting button SB1, a starting button SB2, a starting button SB3, a starting button SB4, a switching power supply, an overflow valve YV, a first electromagnetic valve 1YA, a second electromagnetic valve 2YA, a third electromagnetic valve 3YA, a fourth electromagnetic valve 4YA, a fifth electromagnetic valve 5YA and a sixth electromagnetic valve 6 YA;
the common input end of the single-pole double-throw switch K is electrically connected with the positive output end of the switching power supply, and the manual output end of the single-pole double-throw switch K is electrically connected with one end of a coil of the first relay KAS1, one end of a starting button SB1, one end of a starting button SB2, one end of a starting button SB3 and one end of a starting button SB4 respectively;
the other end of the start button SB1, the other end of the start button SB2, the other end of the start button SB3 and the other end of the start button SB4 are electrically connected to one end of the coil of the second relay KAS2, one end of the coil of the third relay KAS3, one end of the coil of the fourth relay KAS4 and one end of the coil of the fifth relay KAS5, respectively;
the other end of the coil of the first relay KAS1, the other end of the coil of the second relay KAS2, the other end of the coil of the third relay KAS3, the other end of the coil of the fourth relay KAS4 and the other end of the coil of the fifth relay KAS5 are respectively and electrically connected with the negative output end of the switching power supply;
one end of a first normally open contact of the first relay KAS1, one end of a first normally open contact of the second relay KAS2, one end of a first normally open contact of the third relay KAS3, one end of a first normally open contact of the fourth relay KAS4 and one end of a first normally open contact of the fifth relay KAS5 are electrically connected with the positive output end of the switching power supply respectively;
the other end of the first normally open contact of the first relay KAS1, the other end of the first normally open contact of the second relay KAS2, the other end of the first normally open contact of the third relay KAS3, the other end of the first normally open contact of the fourth relay KAS4 and the other end of the first normally open contact of the fifth relay KAS5 are respectively and electrically connected with the positive end of the overflow valve YV, the positive end of the first electromagnetic valve 1YA, the positive end of the second electromagnetic valve 2YA, the positive end of the third electromagnetic valve 3YA and the positive end of the fourth electromagnetic valve 4 YA;
one end of a second normally open contact of the first relay KAS1, one end of a second normally open contact of the second relay KAS2, one end of a second normally open contact of the third relay KAS3, one end of a second normally open contact of the fourth relay KAS4 and one end of a second normally open contact of the fifth relay KAS5 are electrically connected with the positive output end of the switching power supply respectively;
the other end of the second normally open contact of the first relay KAS1, the other end of the second normally open contact of the second relay KAS2, the other end of the second normally open contact of the third relay KAS3, the other end of the second normally open contact of the fourth relay KAS4 and the other end of the second normally open contact of the fifth relay KAS5 are respectively and electrically connected with the negative end of the overflow valve YV, the positive end of the fifth electromagnetic valve 5YA, the positive end of the sixth electromagnetic valve 6YA and the positive end of the sixth electromagnetic valve 6 YA;
the negative electrode output end of the switching power supply is respectively and electrically connected with the negative electrode end of the first electromagnetic valve 1YA, the negative electrode end of the second electromagnetic valve 2YA, the negative electrode end of the third electromagnetic valve 3YA, the negative electrode end of the fourth electromagnetic valve 4YA, the negative electrode end of the fifth electromagnetic valve 5YA and the negative electrode end of the sixth electromagnetic valve 6 YA.
Further, the driving circuit further includes a first intermediate relay KAP1, a second intermediate relay KAP2, a third intermediate relay KAP3, a fourth intermediate relay KAP4, a fifth intermediate relay KAP5, a first PLC control switch SP1, a second PLC control switch SP3, a fourth PLC control switch SP4, a fifth PLC control switch SP5, and a sixth PLC control switch SP 6;
the automatic output end of the single-pole double-throw switch K is respectively and electrically connected with one end of a first PLC control switch SP1, one end of a second PLC control switch SP3, one end of a fourth PLC control switch SP4, one end of a fifth PLC control switch SP5 and one end of a sixth PLC control switch SP 6;
the other end of the first PLC control switch SP1, the other end of the second PLC control switch SP3, the other end of the fourth PLC control switch SP4, the other end of the fifth PLC control switch SP5 and the other end of the sixth PLC control switch SP6 are respectively and electrically connected with one end of a coil of a first intermediate relay KAP1, one end of a coil of a second intermediate relay KAP2, one end of a coil of a third intermediate relay KAP3, one end of a coil of a fourth intermediate relay KAP4 and one end of a coil of a fifth intermediate relay KAP 5;
the other end of the coil of the first intermediate relay KAP1, the other end of the coil of the second intermediate relay KAP2, the other end of the coil of the third intermediate relay KAP3, the other end of the coil of the fourth intermediate relay KAP4 and the other end of the coil of the fifth intermediate relay KAP5 are respectively and electrically connected with the negative output end of the switching power supply;
one end of a first normally open contact of the first intermediate relay KAP1 is electrically connected with the positive output end of the switching power supply, the other end of the first normally open contact of the first intermediate relay KAP1 is electrically connected with the positive end of the overflow valve YV, one end of a second normally open contact of the first intermediate relay KAP1 is electrically connected with the negative output end of the switching power supply, and the other end of the second normally open contact of the first intermediate relay KAP1 is electrically connected with the negative end of the overflow valve YV;
one end of a normally open contact of the second intermediate relay KAP2, one end of a normally open contact of the third intermediate relay KAP3, one end of a normally open contact of the fourth intermediate relay KAP4 and one end of a normally open contact of the fifth intermediate relay KAP5 are respectively electrically connected with the positive output end of the switching power supply;
the other end of the normally open contact of the second intermediate relay KAP2, the other end of the normally open contact of the third intermediate relay KAP3, the other end of the normally open contact of the fourth intermediate relay KAP4 and the other end of the normally open contact of the fifth intermediate relay KAP5 are electrically connected with the positive end of the first electromagnetic valve 1YA, the positive end of the second electromagnetic valve 2YA, the positive end of the third electromagnetic valve 3YA and the positive end of the fourth electromagnetic valve 4YA respectively.
Furthermore, the positive pole of the switching power supply is 24V, and the negative pole of the switching power supply is 0V.
Furthermore, the driving circuit further comprises an air switch QF, a live wire and a zero line, wherein the live wire and the zero line are respectively and electrically connected with the live wire input end and the zero line input end of the switching power supply through the air switch QF.
Furthermore, the measurement and control system also comprises a control circuit, wherein the control circuit comprises a main controller, a first switch power supply, a second switch power supply and a third switch power supply; a zero output port Q0.0 of the main controller is connected with the positive end of a coil of a first intermediate relay KAP1, and the negative end of the coil of the KAP1 of the first intermediate relay is connected with the negative electrode of the first switching power supply; a first output port Q0.1 of the main controller is connected with a coil positive terminal of a second intermediate relay KAP2, and a coil negative terminal of a second intermediate relay KAP2 is connected with a first switching power supply negative terminal; a second output port Q0.2 of the main controller is connected with the positive end of a coil of a third intermediate relay KAP3, and the negative end of the coil of the third intermediate relay KAP3 is connected with the negative electrode of the first switching power supply; a third output port Q0.3 of the main controller is connected with the positive end of a coil of a fourth intermediate relay KAP4, and the negative end of the coil of the KAP4 of the fourth intermediate relay is connected with the negative electrode of the first switching power supply; and a fourth output port Q0.4 of the main controller is connected with the positive coil end of a fifth intermediate relay KAP5, and the negative coil end of the KAP5 of the fifth intermediate relay is respectively connected with the negative pole of the second switching power supply and the negative pole of the third switching power supply.
Further, the main controller employs Siemens S7-200 series (CPU 224).
Compared with the prior art, the invention has the following beneficial effects:
the invention can meet the test requirement of large-size or large-tonnage ROPS and can automatically carry out overload test by manual and automatic control of the measurement and control system, thereby improving the test efficiency and reducing the labor intensity.
Drawings
FIG. 1 is a driving circuit diagram of a measurement and control system of a static load strength testing system of a tractor protective device provided by an embodiment of the invention;
fig. 2 is a control circuit diagram of a measurement and control system of the static load strength test system of the tractor protective device provided by the embodiment of the invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the present invention provides a measurement and control system of a static load strength test system of a tractor guard, the measurement and control system comprises a driving circuit, the driving circuit comprises a first relay KAS1, a second relay KAS2, a third relay KAS3, a fourth relay KAS4, a fifth relay KAS5, a single-pole double-throw switch K, a start button SB1, a start button SB2, a start button SB3, a start button SB4, a switching power supply, an overflow valve YV, a first electromagnetic valve 1YA, a second electromagnetic valve 2YA, a third electromagnetic valve 3YA, a fourth electromagnetic valve 4YA, a fifth electromagnetic valve 5YA and a sixth electromagnetic valve 6 YA;
the common input end of the single-pole double-throw switch K is electrically connected with the positive output end of the switching power supply, and the manual output end of the single-pole double-throw switch K is electrically connected with one end of a coil of the first relay KAS1, one end of a starting button SB1, one end of a starting button SB2, one end of a starting button SB3 and one end of a starting button SB4 respectively;
the other end of the start button SB1, the other end of the start button SB2, the other end of the start button SB3 and the other end of the start button SB4 are electrically connected to one end of the coil of the second relay KAS2, one end of the coil of the third relay KAS3, one end of the coil of the fourth relay KAS4 and one end of the coil of the fifth relay KAS5, respectively;
the other end of the coil of the first relay KAS1, the other end of the coil of the second relay KAS2, the other end of the coil of the third relay KAS3, the other end of the coil of the fourth relay KAS4 and the other end of the coil of the fifth relay KAS5 are respectively and electrically connected with the negative output end of the switching power supply;
one end of a first normally open contact of the first relay KAS1, one end of a first normally open contact of the second relay KAS2, one end of a first normally open contact of the third relay KAS3, one end of a first normally open contact of the fourth relay KAS4 and one end of a first normally open contact of the fifth relay KAS5 are electrically connected with the positive output end of the switching power supply respectively;
the other end of the first normally open contact of the first relay KAS1, the other end of the first normally open contact of the second relay KAS2, the other end of the first normally open contact of the third relay KAS3, the other end of the first normally open contact of the fourth relay KAS4 and the other end of the first normally open contact of the fifth relay KAS5 are respectively and electrically connected with the positive end of the overflow valve YV, the positive end of the first electromagnetic valve 1YA, the positive end of the second electromagnetic valve 2YA, the positive end of the third electromagnetic valve 3YA and the positive end of the fourth electromagnetic valve 4 YA;
one end of a second normally open contact of the first relay KAS1, one end of a second normally open contact of the second relay KAS2, one end of a second normally open contact of the third relay KAS3, one end of a second normally open contact of the fourth relay KAS4 and one end of a second normally open contact of the fifth relay KAS5 are electrically connected with the positive output end of the switching power supply respectively;
the other end of the second normally open contact of the first relay KAS1, the other end of the second normally open contact of the second relay KAS2, the other end of the second normally open contact of the third relay KAS3, the other end of the second normally open contact of the fourth relay KAS4 and the other end of the second normally open contact of the fifth relay KAS5 are respectively and electrically connected with the negative end of the overflow valve YV, the positive end of the fifth electromagnetic valve 5YA, the positive end of the sixth electromagnetic valve 6YA and the positive end of the sixth electromagnetic valve 6 YA;
the negative electrode output end of the switching power supply is respectively and electrically connected with the negative electrode end of the first electromagnetic valve 1YA, the negative electrode end of the second electromagnetic valve 2YA, the negative electrode end of the third electromagnetic valve 3YA, the negative electrode end of the fourth electromagnetic valve 4YA, the negative electrode end of the fifth electromagnetic valve 5YA and the negative electrode end of the sixth electromagnetic valve 6 YA.
The driving circuit further includes a first intermediate relay KAP1, a second intermediate relay KAP2, a third intermediate relay KAP3, a fourth intermediate relay KAP4, a fifth intermediate relay KAP5, a first PLC control switch SP1, a second PLC control switch SP3, a fourth PLC control switch SP4, a fifth PLC control switch SP5, and a sixth PLC control switch SP 6;
the automatic output end of the single-pole double-throw switch K is respectively and electrically connected with one end of a first PLC control switch SP1, one end of a second PLC control switch SP3, one end of a fourth PLC control switch SP4, one end of a fifth PLC control switch SP5 and one end of a sixth PLC control switch SP 6;
the other end of the first PLC control switch SP1, the other end of the second PLC control switch SP3, the other end of the fourth PLC control switch SP4, the other end of the fifth PLC control switch SP5 and the other end of the sixth PLC control switch SP6 are respectively and electrically connected with one end of a coil of a first intermediate relay KAP1, one end of a coil of a second intermediate relay KAP2, one end of a coil of a third intermediate relay KAP3, one end of a coil of a fourth intermediate relay KAP4 and one end of a coil of a fifth intermediate relay KAP 5;
the other end of the coil of the first intermediate relay KAP1, the other end of the coil of the second intermediate relay KAP2, the other end of the coil of the third intermediate relay KAP3, the other end of the coil of the fourth intermediate relay KAP4 and the other end of the coil of the fifth intermediate relay KAP5 are respectively and electrically connected with the negative output end of the switching power supply;
one end of a first normally open contact of the first intermediate relay KAP1 is electrically connected with the positive output end of the switching power supply, the other end of the first normally open contact of the first intermediate relay KAP1 is electrically connected with the positive end of the overflow valve YV, one end of a second normally open contact of the first intermediate relay KAP1 is electrically connected with the negative output end of the switching power supply, and the other end of the second normally open contact of the first intermediate relay KAP1 is electrically connected with the negative end of the overflow valve YV;
one end of a normally open contact of the second intermediate relay KAP2, one end of a normally open contact of the third intermediate relay KAP3, one end of a normally open contact of the fourth intermediate relay KAP4 and one end of a normally open contact of the fifth intermediate relay KAP5 are respectively electrically connected with the positive output end of the switching power supply;
the other end of the normally open contact of the second intermediate relay KAP2, the other end of the normally open contact of the third intermediate relay KAP3, the other end of the normally open contact of the fourth intermediate relay KAP4 and the other end of the normally open contact of the fifth intermediate relay KAP5 are electrically connected with the positive end of the first electromagnetic valve 1YA, the positive end of the second electromagnetic valve 2YA, the positive end of the third electromagnetic valve 3YA and the positive end of the fourth electromagnetic valve 4YA respectively.
The positive pole of the switch power supply is 24V, and the negative pole of the switch power supply is 0V. The driving circuit further comprises an air switch QF, a live wire and a zero wire, and the live wire and the zero wire are respectively and electrically connected with the live wire input end and the zero wire input end of the switching power supply through the air switch QF.
The working principle of the driving circuit is as follows: when the air switch QF is closed, the commercial power outputs 24V of direct current voltage to the subsequent elements through the switching power supply. The single-pole double-throw switch K is a manual/automatic function change-over switch and is respectively used for measuring and controlling different test states of the system.
When the single-pole double-throw switch K is in a manual closing mode, a coil of the first relay KAS1 is electrified, the overflow valve YV acts first, and the loading device can be quickly adjusted to a test position by manually operating the wireless remote controller;
when the start button SB1 is pressed, the coil of the second relay KAS2 is electrified, the normally open contact of the second relay KAS2 is closed, and the first electromagnetic valve 1YA and the fifth electromagnetic valve 5YA work, so that the horizontal loading oil cylinder is rapidly fed;
when the starting button SB2 is pressed, the coil of the third relay KAS3 is electrified, the normally open contact of the third relay KAS3 is closed, and the second electromagnetic valve 2YA and the fifth electromagnetic valve 5YA work, so that the horizontal loading oil cylinder is quickly unloaded;
when the start button SB3 is pressed, the coil of the third relay KAS3 is electrified, the normally open contact of the third relay KAS3 is closed, and the third electromagnetic valve 3YA and the sixth electromagnetic valve 6YA work, so that the vertical crushing oil cylinder is quickly fed;
when the start button SB4 is pressed, the coil of the fourth relay KAS4 is energized, the normally open contact of the fourth relay KAS4 is closed, and the fourth solenoid valve 4YA and the sixth solenoid valve 6YA operate, so that the vertical crushing cylinder is quickly unloaded.
When the single-pole double-throw switch K is set to be in an automatic closing mode: the upper computer machine and the lower computer PLC communicate with each other, and the PLC software programs the PLC to automatically output high or low level to control the opening and closing of a first PLC control switch SP1, a second PLC control switch SP3, a fourth PLC control switch SP4, a fifth PLC control switch SP5 and a sixth PLC control switch SP6, thereby respectively controlling the coil of a first intermediate relay KAP1, the coil of a second intermediate relay KAP2, the coil of a third intermediate relay KAP3, the coil of a fourth intermediate relay KAP4 and the coil of a fifth intermediate relay KAP5 to be electrified or deenergized,
when the coil of the first intermediate relay KAP1 is electrified, the overflow valve YV acts;
when the coil of the second intermediate relay KAP2 is electrified, the first electromagnetic valve 1YA works, and the horizontal loading oil cylinder advances at a constant speed to realize horizontal test loading;
when the coil of the third intermediate relay KAP3 is electrified, the second electromagnetic valve 2YA works, and the horizontal loading oil cylinder reversely moves at a constant speed to realize horizontal test unloading;
when the coil of the fourth intermediate relay KAP4 is electrified, the third electromagnetic valve 3YA works, the vertical crushing oil cylinder contracts at a constant speed, and the crushing test loading is realized;
when the coil of the fifth intermediate relay KAP5 is electrified, the fourth electromagnetic valve 4YA works, and the vertical crushing oil cylinder reversely moves at a constant speed, so that the crushing test unloading is realized.
As shown in fig. 2, the measurement and control system further includes a control circuit, the control circuit includes a main controller, a first switching power supply, a second switching power supply, and a third switching power supply, in this embodiment, the main controller adopts siemens S7-200 series (CPU 224); a zero output port Q0.0 of the main controller is connected with the positive end of a coil of a first intermediate relay KAP1, and the negative end of the coil of the KAP1 of the first intermediate relay is connected with the negative electrode of the first switching power supply; a first output port Q0.1 of the main controller is connected with a coil positive terminal of a second intermediate relay KAP2, and a coil negative terminal of a second intermediate relay KAP2 is connected with a first switching power supply negative terminal; a second output port Q0.2 of the main controller is connected with the positive end of a coil of a third intermediate relay KAP3, and the negative end of the coil of the third intermediate relay KAP3 is connected with the negative electrode of the first switching power supply; a third output port Q0.3 of the main controller is connected with the positive end of a coil of a fourth intermediate relay KAP4, and the negative end of the coil of the KAP4 of the fourth intermediate relay is connected with the negative electrode of the first switching power supply; and a fourth output port Q0.4 of the main controller is connected with the positive coil end of a fifth intermediate relay KAP5, and the negative coil end of the KAP5 of the fifth intermediate relay is respectively connected with the negative pole of the second switching power supply and the negative pole of the third switching power supply.
The invention can meet the test requirement of large-size or large-tonnage ROPS and can automatically carry out overload test by manual and automatic control of the measurement and control system, thereby improving the test efficiency and reducing the labor intensity.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The measurement and control system of the static load strength test system of the tractor protection device is characterized by comprising a driving circuit, wherein the driving circuit comprises a first relay KAS1, a second relay KAS2, a third relay KAS3, a fourth relay KAS4, a fifth relay KAS5, a single-pole double-throw switch K, a starting button SB1, a starting button SB2, a starting button SB3, a starting button SB4, a switching power supply, an overflow valve YV, a first electromagnetic valve 1YA, a second electromagnetic valve 2YA, a third electromagnetic valve 3YA, a fourth electromagnetic valve 4YA, a fifth electromagnetic valve 5YA and a sixth electromagnetic valve 6 YA;
the common input end of the single-pole double-throw switch K is electrically connected with the positive output end of the switching power supply, and the manual output end of the single-pole double-throw switch K is electrically connected with one end of a coil of the first relay KAS1, one end of a starting button SB1, one end of a starting button SB2, one end of a starting button SB3 and one end of a starting button SB4 respectively;
the other end of the start button SB1, the other end of the start button SB2, the other end of the start button SB3 and the other end of the start button SB4 are electrically connected to one end of the coil of the second relay KAS2, one end of the coil of the third relay KAS3, one end of the coil of the fourth relay KAS4 and one end of the coil of the fifth relay KAS5, respectively;
the other end of the coil of the first relay KAS1, the other end of the coil of the second relay KAS2, the other end of the coil of the third relay KAS3, the other end of the coil of the fourth relay KAS4 and the other end of the coil of the fifth relay KAS5 are respectively and electrically connected with the negative output end of the switching power supply;
one end of a first normally open contact of the first relay KAS1, one end of a first normally open contact of the second relay KAS2, one end of a first normally open contact of the third relay KAS3, one end of a first normally open contact of the fourth relay KAS4 and one end of a first normally open contact of the fifth relay KAS5 are electrically connected with the positive output end of the switching power supply respectively;
the other end of the first normally open contact of the first relay KAS1, the other end of the first normally open contact of the second relay KAS2, the other end of the first normally open contact of the third relay KAS3, the other end of the first normally open contact of the fourth relay KAS4 and the other end of the first normally open contact of the fifth relay KAS5 are respectively and electrically connected with the positive end of the overflow valve YV, the positive end of the first electromagnetic valve 1YA, the positive end of the second electromagnetic valve 2YA, the positive end of the third electromagnetic valve 3YA and the positive end of the fourth electromagnetic valve 4 YA;
one end of a second normally open contact of the first relay KAS1, one end of a second normally open contact of the second relay KAS2, one end of a second normally open contact of the third relay KAS3, one end of a second normally open contact of the fourth relay KAS4 and one end of a second normally open contact of the fifth relay KAS5 are electrically connected with the positive output end of the switching power supply respectively;
the other end of the second normally open contact of the first relay KAS1, the other end of the second normally open contact of the second relay KAS2, the other end of the second normally open contact of the third relay KAS3, the other end of the second normally open contact of the fourth relay KAS4 and the other end of the second normally open contact of the fifth relay KAS5 are respectively and electrically connected with the negative electrode end of the overflow valve YV, the positive electrode end of the fifth electromagnetic valve 5YA connected with the first electromagnetic valve 1YA in parallel, the positive electrode end of the fifth electromagnetic valve 5YA connected with the second electromagnetic valve 2YA in parallel, the positive electrode end of the sixth electromagnetic valve 6YA connected with the third electromagnetic valve 3YA in parallel and the positive electrode end of the sixth electromagnetic valve 6YA connected with the fourth electromagnetic valve 4YA in parallel;
the negative electrode output end of the switching power supply is electrically connected with the negative electrode end of the first electromagnetic valve 1YA, the negative electrode end of the second electromagnetic valve 2YA, the negative electrode end of the third electromagnetic valve 3YA, the negative electrode end of the fourth electromagnetic valve 4YA, the negative electrode end of the fifth electromagnetic valve 5YA and the negative electrode end of the sixth electromagnetic valve 6YA respectively;
the driving circuit further includes a first intermediate relay KAP1, a second intermediate relay KAP2, a third intermediate relay KAP3, a fourth intermediate relay KAP4, a fifth intermediate relay KAP5, a first PLC control switch SP1, a second PLC control switch SP3, a fourth PLC control switch SP4, a fifth PLC control switch SP5, and a sixth PLC control switch SP 6;
the automatic output end of the single-pole double-throw switch K is respectively and electrically connected with one end of a first PLC control switch SP1, one end of a second PLC control switch SP3, one end of a fourth PLC control switch SP4, one end of a fifth PLC control switch SP5 and one end of a sixth PLC control switch SP 6;
the other end of the first PLC control switch SP1, the other end of the second PLC control switch SP3, the other end of the fourth PLC control switch SP4, the other end of the fifth PLC control switch SP5 and the other end of the sixth PLC control switch SP6 are respectively and electrically connected with one end of a coil of a first intermediate relay KAP1, one end of a coil of a second intermediate relay KAP2, one end of a coil of a third intermediate relay KAP3, one end of a coil of a fourth intermediate relay KAP4 and one end of a coil of a fifth intermediate relay KAP 5;
the other end of the coil of the first intermediate relay KAP1, the other end of the coil of the second intermediate relay KAP2, the other end of the coil of the third intermediate relay KAP3, the other end of the coil of the fourth intermediate relay KAP4 and the other end of the coil of the fifth intermediate relay KAP5 are respectively and electrically connected with the negative output end of the switching power supply;
one end of a first normally open contact of the first intermediate relay KAP1 is electrically connected with the positive output end of the switching power supply, the other end of the first normally open contact of the first intermediate relay KAP1 is electrically connected with the positive end of the overflow valve YV, one end of a second normally open contact of the first intermediate relay KAP1 is electrically connected with the negative output end of the switching power supply, and the other end of the second normally open contact of the first intermediate relay KAP1 is electrically connected with the negative end of the overflow valve YV;
one end of a normally open contact of the second intermediate relay KAP2, one end of a normally open contact of the third intermediate relay KAP3, one end of a normally open contact of the fourth intermediate relay KAP4 and one end of a normally open contact of the fifth intermediate relay KAP5 are respectively electrically connected with the positive output end of the switching power supply;
the other end of the normally open contact of the second intermediate relay KAP2, the other end of the normally open contact of the third intermediate relay KAP3, the other end of the normally open contact of the fourth intermediate relay KAP4 and the other end of the normally open contact of the fifth intermediate relay KAP5 are electrically connected with the positive end of the first electromagnetic valve 1YA, the positive end of the second electromagnetic valve 2YA, the positive end of the third electromagnetic valve 3YA and the positive end of the fourth electromagnetic valve 4YA respectively.
2. The measurement and control system of the static load strength test system of the tractor protection device according to claim 1, wherein the positive pole of the switching power supply is 24V, and the negative pole of the switching power supply is 0V.
3. The measurement and control system of the static load strength test system of the tractor protection device according to claim 1, wherein the driving circuit further comprises an air switch QF, a live wire and a zero wire, and the live wire and the zero wire are respectively electrically connected with the live wire input end and the zero wire input end of the switching power supply through the air switch QF.
4. The measurement and control system of the static load strength test system of the tractor protective device according to claim 1, further comprising a control circuit, wherein the control circuit comprises a main controller, a first switch power supply, a second switch power supply and a third switch power supply; a zero output port Q0.0 of the main controller is connected with the positive end of a coil of a first intermediate relay KAP1, and the negative end of the coil of the KAP1 of the first intermediate relay is connected with the negative electrode of the first switching power supply; a first output port Q0.1 of the main controller is connected with a coil positive terminal of a second intermediate relay KAP2, and a coil negative terminal of a second intermediate relay KAP2 is connected with a first switching power supply negative terminal; a second output port Q0.2 of the main controller is connected with the positive end of a coil of a third intermediate relay KAP3, and the negative end of the coil of the third intermediate relay KAP3 is connected with the negative electrode of the first switching power supply; a third output port Q0.3 of the main controller is connected with the positive end of a coil of a fourth intermediate relay KAP4, and the negative end of the coil of the KAP4 of the fourth intermediate relay is connected with the negative electrode of the first switching power supply; and a fourth output port Q0.4 of the main controller is connected with the positive coil end of a fifth intermediate relay KAP5, and the negative coil end of the KAP5 of the fifth intermediate relay is respectively connected with the negative pole of the second switching power supply and the negative pole of the third switching power supply.
5. The system for testing the static load strength of the tractor guard according to claim 4, wherein the main controller adopts Siemens S7-200 series CPU 224.
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| AT9467U3 (en) * | 2007-06-14 | 2008-07-15 | Avl List Gmbh | DEVICE AND METHOD FOR SIMULATING A DEVELOPMENT SYSTEM |
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