CN204726502U - A kind of reach truck fluid-link steering electric control system - Google Patents
A kind of reach truck fluid-link steering electric control system Download PDFInfo
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- CN204726502U CN204726502U CN201520414360.6U CN201520414360U CN204726502U CN 204726502 U CN204726502 U CN 204726502U CN 201520414360 U CN201520414360 U CN 201520414360U CN 204726502 U CN204726502 U CN 204726502U
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Abstract
The utility model provides a kind of reach truck fluid-link steering electric control system, comprise the switch circuit be in series successively by storage battery, the first wire fuse, key switch, seat switch, and the steering pressure switch be located in hydraulic circuit, described seat switch and steering pressure switch in parallel are between the mouth and battery negative post of described key switch; The mouth of described seat switch is connected with the first relay coil, and the mouth of steering pressure switch is connected with the second relay coil; The two poles of the earth of described first relay contact, the second relay contact are serially connected on pump motor controller respectively, and described pump motor controller is electrically connected with pump motor.The utility model arranges different speed in vehicle manual steering and two stages of hydraulic power-assisted steering to pump motor, thus reduce the actuating force of manual steering, reduce energy consumption and the noise of system, and effectively reduce the degree of fatigue of the operator in Vehicular turn startup and low-angle steering procedure.
Description
Technical field
The utility model relates to fork truck technical field of electric control, is specifically related to a kind of reach truck fluid-link steering electric control system.
Background technology
Reach truck is applied to the occasion of the narrow space such as warehouse, harbour more, and handling maneuver is the distinguishing feature of reach truck frequently, so the steering swivel system component part that to be of reach truck important.The steering swivel system of current domestic reach truck generally adopts traditional hydraulic power-assist steering system, be in order to reduce manufacturing cost low grade configuration with electrical power steering system and deposit configuration.Wherein hydraulic pressure assisted steering device drives power steerig pump to drive steered wheel rotation by pump motor, but this hydraulic pressure assisted steering device needs lasting energy ezpenditure, there is the shortcomings such as assist characteristic setting range is little, efficiency is low.Although the application of the ultra-low torque all-hydraulic steering gear researched and developed in industry reduces moment of torsion during Vehicular turn, but because when turning to initial start stage and bearing circle Small-angle Rotation, vehicle is in manual steering state, steering force is comparatively large, therefore turns to startup still easily to cause the fatigue of navigating mate frequently.
Utility model content
The utility model, in order to solve the problems of the technologies described above, provides a kind of reach truck fluid-link steering electric control system, with reduce start turn to time actuating force to alleviate the fatigue of navigating mate.
The technical solution of the utility model is: a kind of reach truck fluid-link steering electric control system, comprise the switch circuit be in series successively by storage battery, the first wire fuse, key switch, seat switch, and the steering pressure switch be located in hydraulic circuit, described seat switch and steering pressure switch in parallel are between the mouth and battery negative post of described key switch; The mouth of described seat switch is connected with the first relay coil, and the mouth of steering pressure switch is connected with the second relay coil; The two poles of the earth of described first relay contact, the second relay contact are serially connected on pump motor controller respectively, and described pump motor controller is electrically connected with pump motor.
Further, the positive pole of described storage battery is connected with contacts of contactor by the second wire fuse, the mouth of described contacts of contactor respectively with the positive terminal sub-connection of traction motor controller, pump motor controller; The mouth of described key switch is connected with the chip power end of traction motor controller, pump motor controller respectively; The two poles of the earth of described contactless coil are serially connected in the control port of traction motor controller.
Further, the mouth of described key switch is connected with seat switch and steering pressure switch respectively by DC/DC power supply changeover device.
Further, the two poles of the earth of described first relay contact are serially connected between the digital signal power supply common port of pump motor controller and first order speeds control end; The two poles of the earth of described second relay contact are serially connected between the digital signal power supply common port of pump motor controller and second speed control end; The pig-tail wire of described pump motor is connected with the power cell connection terminal of pump motor controller respectively.
Further, described first relay, the second relay are normally opened relay.
In the utility model, pump motor controller and traction motor controller are existing electronic machines in fork truck, do not relate to the improvement of the principle to itself, method.The utility model only relates to the annexation of circuit and signal between them.
Its working mechanism is: switch on power, and when operator is sitting in operating position, seat switch closes; The chip of pump motor controller and traction motor controller powers on, then the coil two ends of contactless switch produce voltage difference, the contacting of contactless switch, makes pump motor controller and traction motor controller energising; Seat switch signal is through the first relay front pump electric machine controller First Speed control end, then pump motor controller driving pump motor is idle with First Speed signal.When bearing circle does not rotate, deflector is in center position, and the oil inlet of deflector communicates with return opening, and power steerig pump pumps oil directly oil sump tank.Along with operating personal direction of operating dish slowly rotates, vehicle is in manual steering state, bearing circle drives deflector spool to rotate to the left or to the right, the elastic force of the spring leaf that operating personal need overcome between valve core housing opens the oil circuit towards measure motor, at this moment deflector is equivalent to manual pump, the hydraulic oil that measure motor is discharged promotes HM Hydraulic Motor and rotates, and HM Hydraulic Motor drives wheel flutter deflection by chain drive, realizes the handling maneuver of reach truck.Because now pump motor still keeps First Speed to run, thus drive power steerig pump to deflector pump oil, thus increase the input oil mass of manual pump, reduce the actuating force of manual steering.Be rotated further bearing circle until the complete conducting of the oil circuit of deflector, be arranged on the steering pressure switch conduction on all-hydraulic steering gear working hydraulic pressure oil circuit, the second speed control end of pump motor controller is connected through the second relay, then pump motor controller drives pump motor to run fast with second segment speed, vehicle enters hydraulic power-assisted steering state, the hydraulic oil that power steerig pump exports arrives HM Hydraulic Motor through all-hydraulic steering gear, high pressure oil promotes HM Hydraulic Motor and rotates, HM Hydraulic Motor drives wheel flutter deflection by chain drive, thus achieve easily turning to of reach truck.
The utility model has following significant advantage:
1, to turn to and in bearing circle Small-angle Rotation process in startup, when vehicle is in manual steering state, pump motor controller control pump motor is idle, thus drives power steerig pump work, effectively increase the input oil mass of measure motor, reduce the actuating force of manual steering.
2, in the operating mode frequently turned at reach truck, electric control system of the present invention effectively reduces Vehicular turn and starts and the degree of fatigue of operator in low-angle steering procedure.
3, electric control system of the present invention arranges difference in vehicle manual steering and hydraulic power-assisted steering two speed of stage to pump motor, when vehicle is in manual steering state, pump motor controller control pump motor is idle with the input oil mass increasing measure motor; After vehicle enters hydraulic power-assisted steering state, pump motor controller control pump motor runs fast and drives power steerig pump high-speed cruising to meet the flow of high-pressure oil passage, two speed of stage to pump motor arrange differentiation, during particularly manual steering state, pump motor is idle, significantly reduces energy consumption and the noise of system.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is electrical block diagram of the present utility model;
In figure: 1-storage battery, 2-traction motor controller, 3-pump motor controller, 4-second wire fuse, the coil of 5-1 contactless switch, the contact of 5-2 contactless switch, 6-first wire fuse, 7-key switch, 8-seat switch, the coil of 9-1 first relay, the contact of 9-2 first relay, 10-pressure switch, the coil of 11-1 second relay, the contact of 11-2 second relay, 12-pump motor, 13-DC/DC power supply changeover device.
Detailed description of the invention
As shown in Figure 1, a kind of reach truck fluid-link steering electric control system, comprise the switch circuit be in series successively by storage battery 1, first wire fuse 6, key switch 7, seat switch 8, and the steering pressure switch 10 be located in hydraulic circuit, described seat switch 8 and steering pressure switch 10 are connected in parallel between the mouth of described key switch 7 and storage battery 1 negative pole; The mouth of described seat switch 8 is connected with the first relay coil 9-1, and the mouth of steering pressure switch 10 is connected with the second relay coil 11-1; The two poles of the earth of described first relay contact 9-2, the second relay contact 11-2 are serially connected on pump motor controller 3 respectively, and described pump motor controller 3 is electrically connected with pump motor 12.
Further, the positive pole of described storage battery 1 is connected with contacts of contactor 5-2 by the second wire fuse 4, and the mouth of described contacts of contactor 5-2 is connected with the positive terminal BP0 of traction motor controller 2, the positive terminal BP1 of pump motor controller 3 respectively; The mouth of described key switch 7 is connected with the chip power end KS0 of traction motor controller 2, the chip power end KS1 of pump motor controller 3 respectively; The two poles of the earth of described contactless coil 5-1 are serially connected on control port NMC, PMC of traction motor controller 2.
Further, the mouth of described key switch 7 is connected with seat switch 8 and steering pressure switch 10 respectively by DC/DC power supply changeover device 13.
Further, the two poles of the earth of described first relay contact 9-2 are serially connected between the digital signal power supply common port CCM1 of pump motor controller 3 and first order speeds control end DIG1; The two poles of the earth of described second relay contact 11-2 are serially connected between the digital signal power supply common port CCM1 of pump motor controller 3 and second speed control end DIG2; The pig-tail wire of described pump motor 12 is connected with power cell connection terminal U, V, W of pump motor controller 3 respectively.
Further, described first relay, the second relay are normally opened relay.
Storage battery 1 is as power supply, and after key switch 7 is connected, through the first wire fuse 6, the chip of pump motor controller 3 and traction motor controller 2 is powered on, DC/DC power supply changeover device 13 exports+12V direct supply.The coil 5-1 two ends of contactless switch produce voltage difference, and the contact 5-2 of contactless switch connects, then power supply is connected on positive terminal BP1, BP0 of pump motor controller 3 and traction motor controller 2 through the contact 5-2 of the second wire fuse 4, contactless switch by main circuit power.
After connecting key switch 7, operator is sitting in operating position, seat switch 8 closes, the line bag 9-1 positive supply of connection first relay of seat switch 8, the positive supply of the line bag 9-1 of the first relay obtains electric, first relay line bag 9-1 produces pressure reduction, the contact 9-2 adhesive of the first relay, the First Speed signal connecting pump motor controller 3 drives port DIG1, and pump motor controller 3 driving pump motor 12 is idle with First Speed signal.When bearing circle does not rotate, deflector is in center position, and the oil inlet of deflector communicates with return opening, and power steerig pump pumps oil directly oil sump tank.Along with operating personal direction of operating dish slowly rotates, vehicle is in manual steering state, bearing circle drives deflector spool to rotate to the left or to the right, the elastic force of the spring leaf that operating personal need overcome between valve core housing opens the oil circuit towards measure motor, at this moment deflector be equivalent to manual pump, the hydraulic oil that measure motor is discharged promotes HM Hydraulic Motor and rotates, and HM Hydraulic Motor drives wheel flutter deflection by chain drive, realizes the handling maneuver of reach truck.Because now pump motor 12 keeps First Speed to run drive power steerig pump to deflector pump oil, thus increase the input oil mass of manual pump, reduce the actuating force of manual steering.Be rotated further bearing circle until the complete conducting of the oil circuit of deflector, be arranged on steering pressure switch 10 conducting on the hydraulic circuit of all-hydraulic steering gear work, steering pressure switch 10 makes the positive supply of the line bag 11-1 of the second relay obtain electric, the line of the second relay is contracted for fixed output quotas raw pressure reduction, then the contact 11-2 adhesive of the second relay, the second speed signal connecting pump motor controller 3 drives port DIG2, pump motor controller 3 driving pump motor 12 runs fast with second speed signal, vehicle enters hydraulic power-assisted steering state, power steerig pump export hydraulic oil through all-hydraulic steering gear to HM Hydraulic Motor, high pressure oil promotes HM Hydraulic Motor and rotates, HM Hydraulic Motor drives wheel flutter deflection by chain drive, realize easily turning to of reach truck.
Above embodiment is not limited only to protection domain of the present utility model, all modify based on basic thought of the present utility model or change all belong to protection domain of the present utility model.
Claims (5)
1. a reach truck fluid-link steering electric control system, comprise the switch circuit be in series successively by storage battery (1), the first wire fuse (6), key switch (7), seat switch (8), and the steering pressure switch (10) be located in hydraulic circuit, it is characterized in that: described seat switch (8) and steering pressure switch (10) are connected in parallel between the mouth of described key switch (7) and storage battery (1) negative pole; The mouth of described seat switch (8) is connected with the first relay coil (9-1), and the mouth of steering pressure switch (10) is connected with the second relay coil (11-1); The two poles of the earth of described first relay contact (9-2), the second relay contact (11-2) are serially connected on pump motor controller (3) respectively, and described pump motor controller (3) is electrically connected with pump motor (12).
2. reach truck fluid-link steering electric control system according to claim 1, it is characterized in that: the positive pole of described storage battery (1) is connected with contacts of contactor (5-2) by the second wire fuse (4), the mouth of described contacts of contactor (5-2) respectively with the positive terminal sub-connection of traction motor controller (2), pump motor controller (3); The mouth of described key switch (7) is connected with the chip power end of traction motor controller (2), pump motor controller (3) respectively; The two poles of the earth of described contactless coil (5-1) are serially connected in the control port of traction motor controller (2).
3. reach truck fluid-link steering electric control system according to claim 1, is characterized in that: the mouth of described key switch (7) is connected with seat switch (8) and steering pressure switch (10) respectively by DC/DC power supply changeover device (13).
4. reach truck fluid-link steering electric control system according to claim 1, is characterized in that: the two poles of the earth of described first relay contact (9-2) are serially connected between the digital signal power supply common port of pump motor controller (3) and first order speeds control end; Between the digital signal power supply common port that the two poles of the earth of described second relay contact (11-2) are serially connected in pump motor controller (3) and second speed control end; The pig-tail wire of described pump motor (12) is connected with the power cell connection terminal of pump motor controller (3) respectively.
5. reach truck fluid-link steering electric control system according to claim 1, is characterized in that: described first relay, the second relay are normally opened relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520414360.6U CN204726502U (en) | 2015-06-16 | 2015-06-16 | A kind of reach truck fluid-link steering electric control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520414360.6U CN204726502U (en) | 2015-06-16 | 2015-06-16 | A kind of reach truck fluid-link steering electric control system |
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| CN204726502U true CN204726502U (en) | 2015-10-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107200002A (en) * | 2017-07-11 | 2017-09-26 | 安徽合力股份有限公司 | The stopping brake control device and its control method of a kind of electri forklift |
| CN107200060A (en) * | 2017-07-11 | 2017-09-26 | 安徽合力股份有限公司 | The steering control device and its control method of a kind of electri forklift |
| CN108455491A (en) * | 2018-03-14 | 2018-08-28 | 安徽合力股份有限公司 | A kind of electri forklift electric-control system with password startup function |
| CN113200479A (en) * | 2021-04-28 | 2021-08-03 | 安徽合力股份有限公司 | Heat dissipation cooling system of large-tonnage electric forklift and control method thereof |
| CN113401845A (en) * | 2021-05-20 | 2021-09-17 | 安徽合力股份有限公司 | Electric forklift lifting segmented speed regulation device and control method thereof |
-
2015
- 2015-06-16 CN CN201520414360.6U patent/CN204726502U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107200002A (en) * | 2017-07-11 | 2017-09-26 | 安徽合力股份有限公司 | The stopping brake control device and its control method of a kind of electri forklift |
| CN107200060A (en) * | 2017-07-11 | 2017-09-26 | 安徽合力股份有限公司 | The steering control device and its control method of a kind of electri forklift |
| CN107200060B (en) * | 2017-07-11 | 2023-08-04 | 安徽合力股份有限公司 | Steering control device and control method of electric forklift |
| CN107200002B (en) * | 2017-07-11 | 2023-08-04 | 安徽合力股份有限公司 | Parking brake control device of electric forklift and control method thereof |
| CN108455491A (en) * | 2018-03-14 | 2018-08-28 | 安徽合力股份有限公司 | A kind of electri forklift electric-control system with password startup function |
| CN113200479A (en) * | 2021-04-28 | 2021-08-03 | 安徽合力股份有限公司 | Heat dissipation cooling system of large-tonnage electric forklift and control method thereof |
| CN113200479B (en) * | 2021-04-28 | 2024-05-28 | 安徽合力股份有限公司 | Large-tonnage electric forklift heat dissipation cooling system and control method thereof |
| CN113401845A (en) * | 2021-05-20 | 2021-09-17 | 安徽合力股份有限公司 | Electric forklift lifting segmented speed regulation device and control method thereof |
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