CN103307274A - Electric control gear shift control system of loading machine - Google Patents
Electric control gear shift control system of loading machine Download PDFInfo
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- CN103307274A CN103307274A CN2013102254968A CN201310225496A CN103307274A CN 103307274 A CN103307274 A CN 103307274A CN 2013102254968 A CN2013102254968 A CN 2013102254968A CN 201310225496 A CN201310225496 A CN 201310225496A CN 103307274 A CN103307274 A CN 103307274A
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- solenoid valve
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Abstract
The invention discloses an electric control gear shift control system of a loading machine. A power gear shift box is controlled through logic combination of electric appliance elements in the electric control gear shift control system by mainly utilizing an existing gear selector and the electric control gear shift control system, so that a high-price electronic controller can be replaced and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of automatically controlled gear shift control system of loader, can realize advancing, retreating of vehicle and gear shift conversion by Joystick and control system.
Background technique
In loader loading and the scraper process, operating mode is complicated and changeable, needs the frequent gear, therefore requires the power shfit control system to reduce as much as possible shifting shock, to improve service life of a machine and operation comfort.Require highly based on power gear shift speed change to automatically controlled, the import barrier system is selected by many parts producer.Control system comprises Joystick, controller and wire harness.Strongly professional because of loader Powershift transmission control system, technical threshold is high, so domestic production producer seldom.The deficiency that prior art exists: above-mentioned Powershift transmission control system price is higher, if select at little tonnage loader, has reduced the complete machine competitive advantage because cost is high.And adopt common Joystick can't satisfy performance requirement, its performance is that shifting shock is large, whole vehicle stability, travelling comfort variation.
Summary of the invention
The objective of the invention is to provide for Powershift transmission a kind of automatically controlled gear shift control system of loader.The main utilization has gear selector now, adds automatically controlled gear shift control system, by the logical combination between the inner electrical apparatus element of automatically controlled gear shift control system, realizes the control to the power shfit case.
The present invention is achieved by the following technical programs:
A kind of automatically controlled gear shift control system of loader, comprise directional lever, gear handle, centralized control box, direction solenoid valve and gear solenoid valve, described directional lever and gear handle are by centralized control box steer direction solenoid valve and gear solenoid valve, described directional lever comprises forward gears F, retreats grade R and neutral gear N, and described gear handle comprises I shelves and II shelves; Described centralized control box comprises the forward gears relay, retreats a grade relay, neutral gear relay, I shelves relay and II shelves relay; Described direction solenoid valve comprises forward gears solenoid valve and retreat a grade solenoid valve, and the gear solenoid valve comprises I shelves solenoid valve and II shelves solenoid valve; The forward gears F of described directional lever and forward gears relay coil consist of the forward gears control loop, and described forward gears relay contact switch and forward gears solenoid valve consist of the forward gears load circuit; The retreating grade R and retreat grade relay coil and consist of and retreat a grade control loop of described directional lever describedly retreats grade relay contact switch and retreats grade solenoid valve and consist of and retreat a grade load circuit; The neutral gear N of described directional lever and neutral gear relay coil consist of the neutral gear control loop, and described neutral gear relay contact switch is normally closed switch, and by I shelves relay and II shelves relay and I shelves solenoid valve and II shelves solenoid valve formation gear load circuit; The I shelves of described gear handle and I shelves relay coil consist of I shelves control loop, and described I shelves relay contact switch and I shelves solenoid valve consist of I shelves load circuit; The II shelves of described gear handle and II shelves relay coil consist of II shelves control loop, and described II shelves relay contact switch and II shelves solenoid valve consist of II shelves load circuit.
Hydraulic oil is provided with pressure buffer device to the impact of pipeline during for fear of gear shift in gearbox and hydraulic pipe line, require vehicle from static to motion or when changing working state such as being transformed into from advancing when retreating, damping device will work.I shelves solenoid valve and II shelves solenoid valve were not adhesives when this just required directional lever to be in neutral position.The neutral gear signal N of directional lever output makes the adhesive of neutral gear relay in the schematic diagram, and the normally-closed contact of neutral gear relay disconnects, and has cut off the power supply of I shelves solenoid valve and II shelves solenoid valve, thereby guarantees that the gear solenoid valve is without electricity.
When directional lever was in forward gears F, progress signal was so that the adhesive of forward gears relay, the adhesive of forward gears solenoid valve, and the neutral gear relay electric-loss, the normally-closed contact switch on, I shelves solenoid valve and II shelves solenoid valve can adhesives.
When directional lever transforms to when retreating grade from forward gears, forward gears relay electric-loss, neutral gear relay get electric after dead electricity again, retreat a grade relay and get electric.Do like this and can guarantee that hydraulic damping device works.
The present invention also comprises park brake switch, also comprise hand braking relay and power cut relay in the described centralized control box, the contact switch of described power cut relay is normally closed switch, and the coil of described park brake switch and hand braking relay consists of hand braking control loop; The coil of the contact switch of hand braking relay and power cut relay consists of the power cut control loop, and the contact switch of described power cut relay is connected on the forward gears relay and retreats in the control loop of grade relay.Pull-up stopping brake handle, park brake switch is closed, then hand braking relay adhesive, the adhesive of power cut relay.The normally-closed contact switch of power cut relay disconnects, and has cut off the forward gears relay, retreats a grade relay, the control loop of the coil of I shelves relay and II shelves relay.Above four relays can't adhesive, and solenoid valve can't get electric, has cut off the power of machine.
The present invention also comprises the service brake detecting switch, described service brake detecting switch be connected in the control loop of power cut relay after the load circuit of hand braking relay is in parallel; Be provided with the first diode in the loop of described service brake detecting switch, be provided with the second diode in the load circuit of hand braking relay, the first diode and the second diodes in parallel and the conducting of power cut relay direction.After depressing service braking pedal, the service brake detecting switch is closed, the first diode current flow, and the adhesive of power cut relay, perhaps pull-up stopping brake handle, park brake switch is closed, then hand braking relay adhesive, the adhesive of power cut relay.The normally-closed contact switch of power cut relay disconnects, and has cut off the forward gears relay, retreats a grade relay, the control loop of the coil of I shelves relay and II shelves relay.Above four relays can't adhesive, and solenoid valve can't get electric, has cut off the power of machine.
Beneficial effect: the present invention utilizes existing gear selector, adds automatically controlled gear shift control system, by the logical combination between the inner electrical apparatus element of automatically controlled gear shift control system, realizes the control to the power shfit case; Can substitute the high electronic controller of price, reduce cost of production.
Description of drawings
Fig. 1 is electrical schematic of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in the figure, a kind of automatically controlled gear shift control system of loader, comprise directional lever 1, gear handle 2, centralized control box 3, direction solenoid valve 4 and gear solenoid valve 5, described directional lever 1 and gear handle 2 are by centralized control box 3 steer direction solenoid valves 4 and gear solenoid valve 5, described directional lever 1 comprises forward gears F, retreats grade R and neutral gear N, and described gear handle 2 comprises I shelves and II shelves; Described centralized control box 3 comprises forward gears relay 31, retreats grade relay 32, neutral gear relay 33, I shelves relay 34 and II shelves relay 35; Described direction solenoid valve 4 comprises forward gears solenoid valve 41 and retreats grade solenoid valve 42, and gear solenoid valve 5 comprises I shelves solenoid valve 51 and II shelves solenoid valve 52; The forward gears F of described directional lever 1 and forward gears relay 31 coils consist of the forward gears control loop, and described forward gears relay 31 contact switchs and forward gears solenoid valve 41 consist of the forward gears load circuit; The retreating grade R and retreat grade relay 32 coils and consist of and to retreat a grade control loop of described directional lever 1 describedly retreats grade relay 32 contact switchs and retreats grade solenoid valve 42 and consist of and retreat a grade load circuit; The neutral gear N of described directional lever 1 and neutral gear relay 33 coils consist of the neutral gear control loop, described neutral gear relay 33 contact switchs are normally closed switch, and consist of the gear load circuit by I shelves relay 34 and II shelves relay 35 with I shelves solenoid valve 51 and II shelves solenoid valve 52; The I shelves of described gear handle 2 and I shelves relay 34 coils consist of I shelves control loop, and described I shelves relay 34 contact switchs and I shelves solenoid valve 51 consist of I shelves load circuit; The II shelves of described gear handle 2 and II shelves relay 35 coils consist of II shelves control loop, and described II shelves relay 35 contact switchs and II shelves solenoid valve 52 consist of II shelves load circuit.
Hydraulic oil is provided with pressure buffer device to the impact of pipeline during for fear of gear shift in gearbox and hydraulic pipe line, require vehicle from static to motion or when changing working state such as being transformed into from advancing when retreating, damping device will work.I shelves solenoid valve 51 and II shelves solenoid valve 52 were not adhesives when this just required directional lever 1 to be in neutral position.The neutral gear signal N of directional lever 1 output makes 33 adhesives of neutral gear relay in the schematic diagram, and the normally-closed contact of neutral gear relay 33 disconnects, and has cut off the power supply of I shelves solenoid valve 51 and II shelves solenoid valve 52, thereby guarantees that the gear solenoid valve is without electricity.
When directional lever 1 was in forward gears F, progress signal was so that 31 adhesives of forward gears relay, 31 adhesives of forward gears solenoid valve, and neutral gear relay 33 dead electricity, the normally-closed contact switch on, I shelves solenoid valve 51 and II shelves solenoid valve 52 can adhesives.
When directional lever 1 transforms to when retreating grade from forward gears, forward gears relay 31 dead electricity, neutral gear relay 33 electric after dead electricity again, retreat grade relay 32 electric.Do like this and can guarantee that hydraulic damping device works.
The present invention also comprises park brake switch 6, also comprise hand braking relay 36 and power cut relay 37 in the described centralized control box 3, the contact switch of described power cut relay 37 is normally closed switch, and described park brake switch 6 consists of hand braking control loop with the coil of hand braking relay 36; The coil of the contact switch of hand braking relay 36 and power cut relay 37 consists of the power cut control loop, and the contact switch of described power cut relay 37 is connected on forward gears relay 31 and retreats in the control loop of grade relay 32.
The present invention also comprises service brake detecting switch 7, described service brake detecting switch 7 be connected in the control loop of power cut relay 37 after the load circuit of hand braking relay 36 is in parallel; Be provided with the first diode 8 in the loop of described service brake detecting switch 7, be provided with the second diode 9, the first diodes 8 and 9 parallel connections of the second diode and the 37 direction conductings of power cut relay in the load circuit of hand braking relay 36.After depressing service braking pedal, service brake detecting switch 7 closures, 8 conductings of the first diode, 37 adhesives of power cut relay, perhaps pull-up stopping brake handle, park brake switch 6 closures, then hand braking relay 36 adhesives, 37 adhesives of power cut relay.The normally-closed contact switch of power cut relay 37 disconnects, and has cut off forward gears relay 31, retreats grade relay 32, the control loop of the coil of I shelves relay 34 and II shelves relay 35.Above four relays can't adhesive, and solenoid valve can't get electric, has cut off the power of machine.
The B point is given front each relay and solenoid valve for power supply by directional lever 1, gear handle 2, neutral gear relay 33 and service brake detecting switch 7.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (3)
1. automatically controlled gear shift control system of loader, comprise directional lever (1), gear handle (2), centralized control box (3), direction solenoid valve (4) and gear solenoid valve (5), described directional lever (1) and gear handle (2) are by centralized control box (3) steer direction solenoid valve (4) and gear solenoid valve (5), it is characterized in that: described directional lever (1) comprises forward gears F, retreats grade R and neutral gear N, and described gear handle (2) comprises I shelves and II shelves; Described centralized control box (3) comprises forward gears relay (31), retreats a grade relay (32), neutral gear relay (33), I shelves relay (34) and II shelves relay (35); Described direction solenoid valve (4) comprises forward gears solenoid valve (41) and retreats a grade solenoid valve (42), and gear solenoid valve (5) comprises I shelves solenoid valve (51) and II shelves solenoid valve (52); The forward gears F of described directional lever (1) and forward gears relay (31) coil consist of the forward gears control loop, and described forward gears relay (31) contact switch and forward gears solenoid valve (41) consist of the forward gears load circuit; The retreating grade R and retreat a grade relay (32) coil and consist of and to retreat a grade control loop of described directional lever (1) describedly retreats a grade relay (32) contact switch and retreats a grade solenoid valve (42) and consist of and retreat a grade load circuit; The neutral gear N of described directional lever (1) and neutral gear relay (33) coil consist of the neutral gear control loop, described neutral gear relay (33) contact switch is normally closed switch, and consists of the gear load circuit by I shelves relay (34) and II shelves relay (35) with I shelves solenoid valve (51) and II shelves solenoid valve (52); The I shelves of described gear handle (2) and I shelves relay (34) coil consist of I shelves control loop, and described I shelves relay (34) contact switch and I shelves solenoid valve (51) consist of I shelves load circuit; The II shelves of described gear handle (2) and II shelves relay (35) coil consist of II shelves control loop, and described II shelves relay (35) contact switch and II shelves solenoid valve (52) consist of II shelves load circuit.
2. the automatically controlled gear shift control system of loader as claimed in claim 1, it is characterized in that: also comprise park brake switch (6), also comprise hand braking relay (36) and power cut relay (37) in the described centralized control box (3), the contact switch of described power cut relay (37) is normally closed switch, and described park brake switch (6) consists of hand braking control loop with the coil of hand braking relay (36); The coil of the contact switch of hand braking relay (36) and power cut relay (37) consists of the power cut control loop, and the contact switch of described power cut relay (37) is connected on forward gears relay (31) and retreats in the control loop of a grade relay (32).
3. the automatically controlled gear shift control system of loader as claimed in claim 2, it is characterized in that: also comprise service brake detecting switch (7), described service brake detecting switch (7) be connected in the control loop of power cut relay (37) after the load circuit of hand braking relay (36) is in parallel; Be provided with the first diode (8) in the loop of described service brake detecting switch (7), be provided with the second diode (9) in the load circuit of hand braking relay (36), the first diode (8) and (9) parallel connection of the second diode and power cut relay (37) direction conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102254968A CN103307274A (en) | 2013-06-07 | 2013-06-07 | Electric control gear shift control system of loading machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102254968A CN103307274A (en) | 2013-06-07 | 2013-06-07 | Electric control gear shift control system of loading machine |
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| Publication Number | Publication Date |
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| CN103307274A true CN103307274A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102254968A Pending CN103307274A (en) | 2013-06-07 | 2013-06-07 | Electric control gear shift control system of loading machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472229A (en) * | 2017-07-27 | 2017-12-15 | 山东临工工程机械有限公司 | Loading machine electric control parking braking control system |
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| CN200999858Y (en) * | 2007-01-27 | 2008-01-02 | 徐工集团工程机械有限公司试验研究中心 | Electric-controlled speed changing box shift controller |
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| CN201191366Y (en) * | 2008-05-09 | 2009-02-04 | 杭州励贝电液科技有限公司 | Loading machine integrated controller |
| CN201297376Y (en) * | 2008-10-17 | 2009-08-26 | 天津港集装箱货运有限公司 | Electrical control circuit of electronic hydraulic transmission box |
| CN201661677U (en) * | 2010-04-02 | 2010-12-01 | 中煤能源黑龙江煤化工有限公司 | Engineering machine and gear controller thereof |
| CN201801354U (en) * | 2010-09-06 | 2011-04-20 | 湖南山河智能机械股份有限公司 | Electro-hydraulic control gear shift device for mechanical fork truck |
| CN102537319A (en) * | 2012-01-06 | 2012-07-04 | 三一汽车起重机械有限公司 | Transmission box control system and crane |
| CN103062386A (en) * | 2012-12-28 | 2013-04-24 | 山推工程机械股份有限公司 | Electrical control gear shifting system |
| CN203285972U (en) * | 2013-06-07 | 2013-11-13 | 江苏柳工机械有限公司 | Electric-control gear shifting control system of loader |
-
2013
- 2013-06-07 CN CN2013102254968A patent/CN103307274A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200999858Y (en) * | 2007-01-27 | 2008-01-02 | 徐工集团工程机械有限公司试验研究中心 | Electric-controlled speed changing box shift controller |
| CN101255918A (en) * | 2008-04-03 | 2008-09-03 | 常林股份有限公司 | Controller for shifting of gearbox |
| CN201191366Y (en) * | 2008-05-09 | 2009-02-04 | 杭州励贝电液科技有限公司 | Loading machine integrated controller |
| CN201297376Y (en) * | 2008-10-17 | 2009-08-26 | 天津港集装箱货运有限公司 | Electrical control circuit of electronic hydraulic transmission box |
| CN201661677U (en) * | 2010-04-02 | 2010-12-01 | 中煤能源黑龙江煤化工有限公司 | Engineering machine and gear controller thereof |
| CN201801354U (en) * | 2010-09-06 | 2011-04-20 | 湖南山河智能机械股份有限公司 | Electro-hydraulic control gear shift device for mechanical fork truck |
| CN102537319A (en) * | 2012-01-06 | 2012-07-04 | 三一汽车起重机械有限公司 | Transmission box control system and crane |
| CN103062386A (en) * | 2012-12-28 | 2013-04-24 | 山推工程机械股份有限公司 | Electrical control gear shifting system |
| CN203285972U (en) * | 2013-06-07 | 2013-11-13 | 江苏柳工机械有限公司 | Electric-control gear shifting control system of loader |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472229A (en) * | 2017-07-27 | 2017-12-15 | 山东临工工程机械有限公司 | Loading machine electric control parking braking control system |
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Application publication date: 20130918 |