CN104375428A - Lifting industrial test control system of scissors fork type high-altitude operation platform - Google Patents
Lifting industrial test control system of scissors fork type high-altitude operation platform Download PDFInfo
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- CN104375428A CN104375428A CN201410607908.9A CN201410607908A CN104375428A CN 104375428 A CN104375428 A CN 104375428A CN 201410607908 A CN201410607908 A CN 201410607908A CN 104375428 A CN104375428 A CN 104375428A
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- electromagnetic switch
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- opened contact
- limit electromagnetic
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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
- G05B7/00—Arrangements for obtaining smooth engagement or disengagement of automatic control
- G05B7/02—Arrangements for obtaining smooth engagement or disengagement of automatic control electric
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- Automation & Control Theory (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A lifting industrial test control system of a scissors fork type high-altitude operation platform comprises a control circuit and an actuating mechanism. The control circuit comprises an ascending button and a descending button, and the ascending button and the descending button are connected to the control circuit after being connected in parallel. The control circuit further comprises an upper limiting electromagnetic switch, a lower limiting electromagnetic switch, a position detecting block, a timer, a first relay, a second relay, a third relay, a fourth relay and a fifth relay, wherein the position detecting block is fixed to a fork arm cross beam, and the upper limiting electromagnetic switch and the lower limiting electromagnetic switch are installed at the two ends of the motion trail of the position detecting block. The upper limiting electromagnetic switch and the lower limiting electromagnetic switch are triggered by the position detecting block. The lifting industrial test control system of the scissors fork type high-altitude operation platform has the advantages of being capable of relieving the labor intensity of an operator, reducing test cost, increasing the lifting frequency and protecting the safety of the operator.
Description
Technical field
The present invention relates to a kind of tester for testing of aerial work platform, particularly a kind of lifting commerical test control system of scissor aerial work platform, belongs to technical field of engineering machinery.
Background technology
Scissor aerial work platform is by accumulator as power source, and drive motor, motor drives hydraulic pump again, and through the shunting of hydraulic valve, hydraulic oil drives final hydraulic unit to perform walking motion, go to action, lifting action.During down maneuver, motor and hydraulic transmission part do not work, and under load and worktable Gravitative Loads, elevating ram shrinks worktable and falls.
Aerial work platform is used for work high above the ground, and operator can be engaged in the contents such as pipe laying, material handling, maintenance activity on platform.After operator climbs up platform, make platform increase by maneuvering and control handle or decline, can also vehicle to run be made by joystick, to reach the object of work high above the ground.When controlling on ground, operator stands in control panel side, and pressing button can make platform rise or decline.In order to safety, after release control handle or button, platform action stops.
Aerial work platform power system is made up of accumulator, motor, hydraulic pump, hydraulic valve bank, hydraulic jack, movable motor or oil motor etc.Control section is made up of upper mounting plate controller assemblies, lower platform controller, electric machine controller, lower platform Control Component.
After the controller of aerial work platform receives input signal, export control signal to electric machine controller, electric machine controller makes motor rotate by given speed, and motor drives hydraulic pump running, controlled solenoid valve is connected, and hydraulic jack is flexible to be made platform rise or declines.The controlled motor of speed can also make turning in vehicle to run and walking process.Thus not only operator can make lifting platform but also can make vehicle to run on platform.
When scissor aerial work platform does lifting commerical test, Normal practice is: operator, in the control panel side of platform, bends over or partly squats down on the ground, pin and rise or fall switch, because be crawl operation, namely action of loosing one's grip stops, so during lifting, operator needs maintenance to pin switch.
The shortcoming of this kind of way is: the operation continued makes operator tired, and because operator's distance vehicle is near, in lifting process, motor and hydraulic oil move the sound sent, and operator also can be made not feel well.
Summary of the invention
Goal of the invention: the lifting commerical test control system that the object of this invention is to provide a kind of scissor aerial work platform.
Technical scheme: a kind of lifting commerical test control system of scissor aerial work platform, comprises control circuit and topworks, and described control circuit comprises raise button and decline button, Access Control circuit after described raise button and the parallel connection of decline button; Described topworks comprises chassis and yoke crossbeam, and described yoke crossbeam is reciprocating along chassis length direction with the lifting of aerial work platform; Described control circuit also comprises upper limit electromagnetic switch, lower limit electromagnetic switch, position detection block, counter, the first relay, the second relay, the 3rd relay, the 4th relay and the 5th relay, described position is detected block and is fixed on yoke crossbeam, and described upper limit electromagnetic switch and lower limit electromagnetic switch are arranged on the two ends that the movement locus of block is detected in position; Described first relay comprises normally opened contact and normally closed contact, described second relay comprises normally opened contact and normally closed contact, described 3rd relay comprises normally opened contact and normally closed contact, described 4th relay comprises normally opened contact and normally closed contact, described 5th relay comprises normally opened contact, and described counter comprises reset button; The normally opened contact of described raise button and the first relay and the normally opened contact of the 3rd relay parallel with one another, then successively with the normally closed contact of the second relay, the normally closed contact of the 4th relay and the coils connected in series of the first relay; The normally opened contact of decline button and the second relay and the normally opened contact of the 4th relay parallel with one another, then successively with the normally closed contact of the first relay, the normally closed contact of the 3rd relay and the coils connected in series of the second relay; Described upper limit electromagnetic switch and lower limit electromagnetic switch detect block by position and trigger, the signal output part of described upper limit electromagnetic switch is connected with the circuit after the 4th relay coil and the 5th relay coil parallel connection, and the signal output part of described lower limit electromagnetic switch is connected with the coil circuit of the 3rd relay; The normally opened contact of described 5th relay is connected with the counting circuit of counter.
Being provided with emergency stop switch in the main circuit of described control circuit, only need pressing emergency stop switch when needing emergent stopping to test when going wrong in process of the test, the main circuit of control circuit will disconnect, and test will stop immediately.
Principle of work: the direction switch of former aerial work platform is connected to three lines, wherein single line is power lead, another single line provides the circuit of dropping signal for controller, and last single line provides the circuit of rising signals for controller.The control circuit of the application needs powers in turn to respective wire regularly, just can the automatic lifting of implementation platform.Make a simple and easy control enclosure, be used for raise button, decline button and scram button are installed.When needing emergent stopping, press scram button, operation circuit dead electricity, platform is out of service.Control enclosure is arranged on outside distance 3 meters, vehicle, makes operator away from noise, ensure personal security, when vehicle breaks down, also can be processed in time.
Described counter has tally function, and during its corresponding stitch input high level signal, its displayed value adds 1; It can preset count value, comprises at least one group of normally closed contact, and when stored count value equals setting value, normally closed contact disconnects.Described counter has repeat count function, during its corresponding stitch input high level signal, and counter O reset.
Described control circuit relay is DC relay, and the coil rating voltage of relay can be 12 volts, 24 volts, 36 volts.Described relay at least comprises one group of normally opened contact and one group of normally closed contact.After described coil electricity, normally opened contact closes, and normally closed contact disconnects.After coil losing electricity, virgin state is recovered in contact.Described upper limit electromagnetic switch and lower limit electromagnetic switch are electromagnetic type proximity switches, when its sensitive surface and metal object distance are less than or equal to setpoint distance, it exports high level signal, on the contrary, when its sensitive surface and metal object distance are greater than setpoint distance, output low level signal.Described pushbutton switch can be button or toggle switch or poke-rod type switch, and it at least comprises one group of normally opened contact, can make the closing of contact when operating switch.Described emergency stop switch is a kind of special shape of switch, and its profile can be mushroom capitiform, also can be conventional push button, and it at least comprises one group of normally closed contact.During operation emergency stop switch, its normally closed contact can be made to disconnect.The normally closed contact of counter exports high level signal, described high level signal provides power supply for electromagnetic switch and relay, the normally opened contact of the normally opened contact of rising switch and the first relay, the 3rd relay is in parallel and connect with the normally closed contact of the second relay, the normally closed contact of the 4th relay and access one end of the first relay coil afterwards, when one end of described coil receives high level signal, platform courses circuit obtains rising signals, and platform continues to rise.The normally opened contact of decline switch and the second relay, the normally opened contact of the 4th relay are in parallel, and after connecting with the normally closed contact of the first relay, the normally closed contact of the 3rd relay, access one end of the second relay coil, when one end of described coil receives high level signal, platform courses circuit obtains dropping signal, platform continuous decrease.When upper limit electromagnetic switch exports high level signal, the coil adhesive of the 4th relay and the 5th relay, the normally opened contact of its correspondence closes, and normally closed contact disconnects.The normally opened contact of the 5th relay closes, and this high level signal makes counter display add 1.When lower limit electromagnetic switch exports high level signal, the coil adhesive of the 3rd relay, the normally opened contact of its correspondence is closed, normally closed contact disconnects.The above relay contact follows the rule of break-before-make.
First relay, the second relay, the 3rd relay, the 4th relay and the 5th relay are miniature relays, trigger (press and discharge) raise button once, first relay adhesive, the normally opened contact of the first relay closes, and the first relay continues to remain closed.Platform controller input rising control signal, platform continues to rise.Platform movement is to top dead center position, and upper limit electromagnetic switch exports high level signal, the 4th relay, the 5th relay adhesive, and the normally closed contact of the 4th relay disconnects, and the first relay release, upward movement stops.The normally opened contact of the 4th relay is connected, the second relay adhesive, control circuit input dropping signal, and platform declines, and closed second relay that makes of the normally opened contact of the second relay keeps adhesive.5th relay adhesive, the displayed value of counter becomes 1 by 0.When Platform movement is to bottom dead center position, upper limit electromagnetic switch sends high level signal, the 3rd relay adhesive, and the normally closed contact of the 3rd relay disconnects, and the second relay electric-loss declines and stops.The normally opened contact of the 3rd relay is connected, the first relay adhesive, and platform rises and enters next circulation.Click reset button, counter displayed value is zero, prepares for being elevated test next time.
The distance of block and upper limit electromagnetic switch and lower limit electromagnetic switch is detected for the ease of installation and adjusting position, described upper limit electromagnetic switch and lower limit electromagnetic switch are fixed on chassis by support, described position is detected block and is suspended on yoke crossbeam, and position detection block can around yoke crossbeam swing.When the sensitive surface of described position detection block distance upper limit electromagnetic switch and lower limit electromagnetic switch is in setpoint distance, upper limit electromagnetic switch or lower limit electromagnetic switch export high level signal.When distance is greater than setting value, upper limit electromagnetic switch or lower limit electromagnetic switch output low level signal.
Beneficial effect: the present invention can alleviate the labour intensity of operator, reduces experimentation cost; Improve lifting number of times in the unit interval, the safety of protection operator.
Accompanying drawing explanation
Fig. 1 is electrical schematic of the present invention;
Fig. 2 is the structure diagram of topworks of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, a kind of lifting commerical test control system of scissor aerial work platform, comprises control circuit and topworks, and described control circuit comprises raise button 1 and decline button 2, described raise button 1 and decline button 2 rear Access Control circuit in parallel; Described topworks comprises chassis 3 and yoke crossbeam 4, and described yoke crossbeam 4 is reciprocating along chassis 3 length direction with the lifting of aerial work platform; Described control circuit also comprises upper limit electromagnetic switch 5, lower limit electromagnetic switch 6, position detection block 7, counter 8, first relay R 1, second relay R 2, the 3rd relay R 3, the 4th relay R 4 and the 5th relay R 5, described position is detected block 7 and is fixed on yoke crossbeam 4, and described upper limit electromagnetic switch 5 and lower limit electromagnetic switch 6 are arranged on the two ends that the movement locus of block 7 is detected in position; Described first relay R 1 comprises normally opened contact R1-1 and normally closed contact R1-2, described second relay R 2 comprises normally opened contact R2-1 and normally closed contact R2-2, described 3rd relay R 3 comprises normally opened contact R3-1 and normally closed contact R3-2, described 4th relay R 4 comprises normally opened contact R4-1 and normally closed contact R4-2, described 5th relay R 5 comprises normally opened contact R5-1, and described counter 8 comprises reset button 8-1; Described raise button 1 and the normally opened contact R1-1 of the first relay R 1 and normally opened contact R3-1 of the 3rd relay R 3 parallel with one another, then successively with the coils connected in series of the normally closed contact R2-2 of the second relay R 2, the normally closed contact R4-2 of the 4th relay R 4 and the first relay R 1; The normally opened contact R2-1 of decline button 2 and the second relay R 2 and normally opened contact R4-1 of the 4th relay R 4 is parallel with one another, then successively with the coils connected in series of the normally closed contact R1-2 of the first relay R 1, the normally closed contact R3-2 of the 3rd relay R 3 and the second relay R 2; Described upper limit electromagnetic switch 5 and lower limit electromagnetic switch 6 detect block 7 by position and trigger, the signal output part of described upper limit electromagnetic switch 5 is connected with the circuit after the 4th relay R 4 coil and the 5th relay R 5 coils from parallel connection of coils, and the signal output part of described lower limit electromagnetic switch 6 is connected with the coil circuit of the 3rd relay R 3; The normally opened contact R5-1 of described 5th relay R 5 is connected with the counting circuit of counter 8.Being provided with emergency stop switch 9 in the main circuit of described control circuit, only need pressing emergency stop switch 9 when needing emergent stopping to test when going wrong in process of the test, the main circuit of control circuit will disconnect, and test will stop immediately.
The distance of block 7 and upper limit electromagnetic switch 5 and lower limit electromagnetic switch 6 is detected for the ease of installation and adjusting position, described upper limit electromagnetic switch 5 and lower limit electromagnetic switch 6 are fixed on chassis 3 by support, described position is detected block 7 and is suspended on yoke crossbeam 4, and position detection block 7 can swing around yoke crossbeam 4.Described position detect the sensitive surface of block 7 apart from upper limit electromagnetic switch 5 and lower limit electromagnetic switch 6 in setpoint distance time, upper limit electromagnetic switch 5 or lower limit electromagnetic switch 6 export high level signal.When distance is greater than setting value, upper limit electromagnetic switch 5 or lower limit electromagnetic switch 6 output low level signal.
The direction switch of former aerial work platform is connected to three lines, wherein single line is power lead, and another single line provides the circuit of dropping signal for controller, and last single line provides the circuit of rising signals for controller.The control circuit of the application needs powers in turn to respective wire regularly, just can the automatic lifting of implementation platform.Make a simple and easy control enclosure, be used for raise button, decline button and scram button are installed.When needing emergent stopping, press scram button, operation circuit dead electricity, platform is out of service.Control enclosure is arranged on outside distance 3 meters, vehicle, makes operator away from noise, ensure personal security, when vehicle breaks down, also can be processed in time.
Described counter 8 has tally function, and during its corresponding stitch input high level signal, its displayed value adds 1; It can preset count value, comprises at least one group of normally closed contact, and when stored count value equals setting value, normally closed contact disconnects.Described counter has repeat count function, and during its corresponding stitch input high level signal, counter 8 resets.
Described control circuit relay is DC relay, and the coil rating voltage of relay can be 12 volts, 24 volts, 36 volts.Described relay at least comprises one group of normally opened contact and one group of normally closed contact.After described coil electricity, normally opened contact closes, and normally closed contact disconnects.After coil losing electricity, virgin state is recovered in contact.Described upper limit electromagnetic switch 5 and lower limit electromagnetic switch 6 are electromagnetic type proximity switches, when its sensitive surface and metal object distance are less than or equal to setpoint distance, it exports high level signal, on the contrary, when its sensitive surface and metal object distance are greater than setpoint distance, output low level signal.Described pushbutton switch can be button or toggle switch or poke-rod type switch, and it at least comprises one group of normally opened contact, can make the closing of contact when operating switch.Described emergency stop switch 9 is a kind of special shapes of switch, and its profile can be mushroom capitiform, also can be conventional push button, and it at least comprises one group of normally closed contact.During operation emergency stop switch, its normally closed contact can be made to disconnect.The normally closed contact of counter 8 exports high level signal, described high level signal provides power supply for electromagnetic switch and relay, the normally opened contact R3-3 of the normally opened contact R1-1 of rising switch 1 and the first relay R 1, the 3rd relay R 3 is in parallel and connect with the normally closed contact R2-2 of the second relay R 2, the normally closed contact R4-2 of the 4th relay R 4 and access one end of the first relay R 1 coil afterwards, when one end of described coil receives high level signal, platform courses circuit obtains rising signals, and platform continues to rise.The normally opened contact R2-1 of decline switch 2 and the second relay R 2, the normally opened contact R4-1 of the 4th relay R 4 are in parallel, and after connecting with the normally closed contact R1-2 of the first relay R 1, the normally closed contact R3-2 of the 3rd relay R 3, access one end of the second relay R 2 coil, when one end of described coil receives high level signal, platform courses circuit obtains dropping signal, platform continuous decrease.When upper limit electromagnetic switch 5 exports high level signal, the coil adhesive of the 4th relay R 4 and the 5th relay R 5, the normally opened contact of its correspondence closes, and normally closed contact disconnects.The normally opened contact of the 5th relay R 5 closes, and this high level signal makes counter display add 1.When lower limit electromagnetic switch 5 exports high level signal, the coil adhesive of the 3rd relay R 3, the normally opened contact of its correspondence is closed, normally closed contact disconnects.The above relay contact follows the rule of break-before-make.
First relay R 1, second relay R 2, the 3rd relay R 3, the 4th relay R 4 and the 5th relay R 5 are miniature relays, trigger (press and discharge) raise button once, first relay R 1 adhesive, the normally opened contact R1-1 of the first relay R 1 closes, and the first relay R 1 continues to remain closed.Platform controller input rising control signal, platform continues to rise.Platform movement is to top dead center position, and upper limit electromagnetic switch 5 exports high level signal, the 4th relay R 4, the 5th relay R 5 adhesive, and the normally closed contact R4-2 of the 4th relay R 4 disconnects, and the first relay R 1 discharges, and upward movement stops.The normally opened contact R4-1 of the 4th relay R 4 connects, the second relay R 2 adhesive, control circuit input dropping signal, and platform declines, and the normally opened contact R2-1 of the second relay R 2 is closed makes the second relay R 2 keep adhesive.5th relay R 5 adhesive, the displayed value of counter becomes 1 by 0.When Platform movement is to bottom dead center position, upper limit electromagnetic switch 5 sends high level signal, the 3rd relay R 3 adhesive, and the normally closed contact R3-2 of the 3rd relay R 3 disconnects, the second relay R 2 dead electricity, declines and stops.The normally opened contact R3-1 of the 3rd relay R 3 connects, the first relay R 1 adhesive, and platform rises and enters next circulation.Click reset button 8-1, counter 8 displayed value is zero, prepares for being elevated test next time.
The present invention can alleviate the labour intensity of operator, reduces experimentation cost; Improve lifting number of times in the unit interval, the safety of protection operator.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (3)
1. the lifting commerical test control system of a scissor aerial work platform, comprise control circuit and topworks, described control circuit comprises raise button (1) and decline button (2), described raise button (1) and decline button (2) rear Access Control circuit in parallel; Described topworks comprises chassis (3) and yoke crossbeam (4), and described yoke crossbeam (4) is reciprocating along chassis (3) length direction with the lifting of aerial work platform; It is characterized in that: described control circuit also comprises upper limit electromagnetic switch (5), lower limit electromagnetic switch (6), position detection block (7), counter (8), the first relay (R1), the second relay (R2), the 3rd relay (R3), the 4th relay (R4) and the 5th relay (R5), described position is detected block (7) and is fixed on yoke crossbeam (4), and described upper limit electromagnetic switch (5) and lower limit electromagnetic switch (6) are arranged on the two ends that the movement locus of block (7) is detected in position; Described first relay (R1) comprises normally opened contact (R1-1) and normally closed contact (R1-2), described second relay (R2) comprises normally opened contact (R2-1) and normally closed contact (R2-2), described 3rd relay (R3) comprises normally opened contact (R3-1) and normally closed contact (R3-2), described 4th relay (R4) comprises normally opened contact (R4-1) and normally closed contact (R4-2), described 5th relay (R5) comprises normally opened contact (R5-1), and described counter (8) comprises reset button (8-1); The normally opened contact (R1-1) of described raise button (1) and the first relay (R1) and the normally opened contact (R3-1) of the 3rd relay (R3) parallel with one another, then successively with the normally closed contact (R2-2) of the second relay (R2), the normally closed contact (R4-2) of the 4th relay (R4) and the coils connected in series of the first relay (R1); The normally opened contact (R2-1) of decline button (2) and the second relay (R2) and the normally opened contact (R4-1) of the 4th relay (R4) parallel with one another, then successively with the normally closed contact (R1-2) of the first relay (R1), the normally closed contact (R3-2) of the 3rd relay (R3) and the coils connected in series of the second relay (R2); Described upper limit electromagnetic switch (5) and lower limit electromagnetic switch (6) detect block (7) by position and trigger, the signal output part of described upper limit electromagnetic switch (5) is connected with the circuit after the 4th relay (R4) coil and the 5th relay (R5) coils from parallel connection of coils, and the signal output part of described lower limit electromagnetic switch (6) is connected with the coil circuit of the 3rd relay (R3); The normally opened contact (R5-1) of described 5th relay (R5) is connected with the counting circuit of counter (8).
2. the lifting commerical test control system of scissor aerial work platform as claimed in claim 1, is characterized in that: be provided with emergency stop switch (9) in the main circuit of described control circuit.
3. the lifting commerical test control system of scissor aerial work platform as claimed in claim 1 or 2, it is characterized in that: described upper limit electromagnetic switch (5) and lower limit electromagnetic switch (6) are fixed on chassis (3) by support, described position is detected block (7) and is suspended on yoke crossbeam (4), and position detection block (7) can swing around yoke crossbeam (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410607908.9A CN104375428B (en) | 2014-11-03 | 2014-11-03 | Lifting industrial test control system of scissors fork type high-altitude operation platform |
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| CN201410607908.9A CN104375428B (en) | 2014-11-03 | 2014-11-03 | Lifting industrial test control system of scissors fork type high-altitude operation platform |
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| CN104375428A true CN104375428A (en) | 2015-02-25 |
| CN104375428B CN104375428B (en) | 2017-02-15 |
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| CN110803020A (en) * | 2019-11-28 | 2020-02-18 | 太原中车时代轨道工程机械有限公司 | Contact net operation car walks capable controlling means |
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| CN110045635A (en) * | 2018-01-17 | 2019-07-23 | 上海东冠纸业有限公司 | A kind of tipper photoelectricity positioning control system |
| CN110803020A (en) * | 2019-11-28 | 2020-02-18 | 太原中车时代轨道工程机械有限公司 | Contact net operation car walks capable controlling means |
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| CN104375428B (en) | 2017-02-15 |
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