CN105966380A - Electric-forklift braking system and braking method - Google Patents
Electric-forklift braking system and braking method Download PDFInfo
- Publication number
- CN105966380A CN105966380A CN201610572544.4A CN201610572544A CN105966380A CN 105966380 A CN105966380 A CN 105966380A CN 201610572544 A CN201610572544 A CN 201610572544A CN 105966380 A CN105966380 A CN 105966380A
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- Prior art keywords
- controller
- braking
- brake
- electromagnetic brake
- parking
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
- B60T2220/04—Pedal travel sensor, stroke sensor; Sensing brake request
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to an electric-forklift braking system and a braking method. The electric-forklift braking system comprises a pedal brake, a speed sensor, a hand braking switch, a direction switch, an accelerator pedal and a display instrument, wherein the pedal brake, the speed sensor, the hand braking switch, the direction switch, the accelerator pedal and the display instrument are connected with the input end of a controller; the electric-forklift braking system further comprises an alternating current dynamo and an electromagnetic brake which are connected with the output end of the controller, the electromagnetic brake is fixed on the alternating current dynamo, and all the parts are subjected to power supply through a battery. According to the technical scheme, original mechanical braking of service braking and parking braking of the electric-forklift braking system is replaced with electric braking of the alternating current dynamo and the electromagnetic brake, automatic parking and automatic parking relieving of a whole vehicle are achieved through power-off stopping or power-on starting of the electromagnetic brake, operation of a driver is reduced, the working strength of the driver is reduced, and meanwhile cost is further reduced.
Description
Technical field
The present invention relates to brake system of forklift, be specifically related to a kind of electri forklift brakes and braking method.
Background technology
The major function of brake system of forklift is to make even stop, the make car speed of descent run of the vehicle deceleration in traveling keep stable, make the vehicle of stagnation of movement remain stationary as.At present, brakes fork truck used is broadly divided into two classes: a class is service braking system；Another kind of is parking braking system.
Service braking system is handled with foot by driver, therefore also known as foot brake system, its function is to make vehicle deceleration the most under steam or parking in the shortest distance；Parking braking system is handled with hands by driver, therefore also known as hand brake system, its function is to make the vehicle having pulled up on road surface resident as you were.Both brakes are all to utilize retaining element and rotate the friction of element surface and the braking moment that produces, along with the increase of the time of use, need to make regular check on brakes more renewal of facing renewal.Additionally, current parking brake is required for driver's manual pull-up parking brake when stopping, manual Panasonic's parking brake again before vehicle runs, and just has certain operating physical force requirement due to hand braking at the beginning of design, so after long-time operation is hand braking, driver may feel that arm is uncomfortable.How to reduce the maintaining time of brakes, improve the automaticity of brakes, the fatigue strength reducing driver becomes brakes urgent problem.
Summary of the invention
It is an object of the invention to provide a kind of electri forklift brakes, this brakes achieves automatic parking and the automatic parking releasing of car load, decreases the operation of driver, reduces the working strength of driver.
For achieving the above object, present invention employs techniques below scheme: include pedal brake, velocity sensor, parking switch, direction switch, gas pedal and the display instrument being connected with controller input, also include alternating current generator and the electromagnetic brake being connected with controller output end, described electromagnetic brake is fixed on alternating current generator, and above-mentioned each parts are by cell powers.
Described battery, controller, alternating current generator, pedal brake and velocity sensor composition service braking system；The output of controller detection pedal brake, and drive alternating current generator to be operated in on-position to make vehicle deceleration or stopping；Controller controls the speed of vehicle according to the output valve of velocity sensor.
Described battery, controller, electromagnetic brake, velocity sensor, parking switch, direction switch, gas pedal and display instrument composition parking braking system；The output valve of controller detection velocity sensor, and electromagnetic brake closedown is controlled when output valve is zero, it is achieved parking braking；When controller receives the signal of direction switch and gas pedal, control electromagnetic brake and open, release parking braking.
Described electromagnetic brake is electric losing self-locking type electromagnetic brake.
As shown from the above technical solution, service brake and the parking braking of the present invention are changed to the electric braking of alternating current generator and electromagnetic brake by original mechanical braking change, closed or obtain electric automatic parking and the automatic parking releasing opened and achieve car load by the dead electricity of electromagnetic brake, decrease the operation of driver, reduce the working strength of driver, also reduce cost simultaneously.
Another object of the present invention is to provide a kind of electri forklift braking method, comprise the following steps:
(1) car load energising；
(2) controller judges whether parking switch is opened, it is judged that result, for being, enters next step, otherwise then shows that the P display lamp in instrument is bright, and returns step (2) and rejudge；
(3) controller judges that direction switch and gas pedal are the most effective, it is judged that result is for being, controller controls electromagnetic brake and obtains electric opening, and parking braking releases, and alternating current generator drives car load to travel；Otherwise then return step (3) to rejudge；
(4) controller judges that pedal brake is the most effective, it is judged that result is for being then AC motor brake, and car load slows down, otherwise then returns step (4) and rejudge；
(5) controller judges whether car load speed is zero, it is judged that result is for being that then controller controls electromagnetic brake dead electricity Guan Bi, and parking braking is effective, car load parking, otherwise then returns step (5) and rejudge.
As shown from the above technical solution, the braking method that the present invention provides can realize automatic parking and the automatic parking releasing of car load, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the present invention；
Fig. 2 is the flow chart of the present invention.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings:
A kind of electri forklift brakes as shown in Figure 1, including the pedal brake 2 being connected with controller 1 input, velocity sensor 3, parking switch 4, direction switch 5, gas pedal 6 and display instrument 7, also include alternating current generator 8 and the electromagnetic brake 9 being connected with controller 1 outfan, electromagnetic brake 9 is fixed on alternating current generator 8, and above-mentioned each parts are provided power supply by battery 10.Electromagnetic brake 9 is to be fixed on mechanically on alternating current generator 8, and miscellaneous part is all to be connected with each other by electrical means.
Function and the principle of above-mentioned each parts are as follows:
Battery: the energy storage device of car load, provides electric energy for car load；
Controller: detect, receive the duty of each parts of car load, drives alternating current generator work, controls electromagnetic brake simultaneously and opens or close；
Alternating current generator: for universal alternating current generator, can be operated in motoring condition by the driving of controller, drives vehicle to travel；On-position can also be operated in, reduce the speed of vehicle；
Electromagnetic brake: be fixed on alternating current generator by mechanical connection, this electromagnetic brake is electric losing self-locking type electromagnetic brake, and when electromagnetic brake obtains electric opening, alternating current generator is free to rotate；When electromagnetic brake dead electricity closes, the rotor of locking alternating current generator, make alternating current generator not rotate, thus realize car load parking braking；
Pedal brake: operation principle is all analog output with gas pedal, the size of analog output is controlled by stepping on pedal travel, analog output is to controller, alternating current generator is driven to produce variable brake force by analog quantity size by controller, so that vehicle deceleration or stopping, this pedal mainly controls service brake；
Velocity sensor: these parts are fixed on alternating current generator, for detecting the rotating speed of alternating current generator, is converted by certain speed ratio and is converted into car load speed；
Parking switch: for the two-level rocker switch of standard, when the switch is closed, car load driving functions limits, and electromagnetic brake dead electricity closes, and display instrument left-hand seat Brake lamp P icon lights；When the switch is opened, car load driving functions restriction cancellation, display instrument left-hand seat Brake lamp P icon extinguishes, and electromagnetic brake can automatically terminate according to whole vehicle state；
Direction switch: control the advance of car load, retrogressing；
Gas pedal: control the speed advanced or retreat of car load；
Display instrument: the display each duty of car load.
Further, battery 10, controller 1, alternating current generator 8, pedal brake 2 and velocity sensor 3 form service braking system；Controller 1 detects the output of pedal brake 2, and drives alternating current generator 8 to be operated in on-position to make vehicle deceleration or stopping；Controller 1 controls the maximum braking force of vehicle according to the output valve of velocity sensor 3.
The operation principle of service braking system is:
Battery provides power supply to all parts of car load, by detecting the output of pedal brake, controller drives alternating current generator to be operated in on-position, produces variable brake force, so that vehicle deceleration or stopping；During service brake, alternating current generator is transformed into regenerative braking state by motoring condition, is made by controller the part kinetic energy of car load be converted into electric energy, is stored again in battery, improves the working time of car load.Meanwhile, in order to meet vehicle demand braking force at various speeds, controller can carry out certain adjustment according to the size of velocity sensor output valve, when preventing vehicle high-speed, and the excessive damage causing personnel or goods of brake force.
Further, battery 10, controller 1, electromagnetic brake 9, velocity sensor 3, parking switch 4, direction switch 5, gas pedal 6 and display instrument 7 form parking braking system；Controller 1 detects the output valve of velocity sensor 3, and control electromagnetic brake 9 cuts out when output valve is zero, it is achieved parking braking；When controller 1 receives the signal of direction switch 5 and gas pedal 6, control electromagnetic brake 9 and open, release parking braking.
The operation principle of parking braking system is:
Parking braking mainly closes or obtains electric automatic parking and the automatic parking releasing opened and realize car load by the dead electricity of electromagnetic brake, reduces the operation of driver, reduces the working strength of driver.
Automatic parking: when vehicle makes vehicle deceleration by service brake, controller detects the feedback of velocity sensor in real time, when the output valve of velocity sensor is zero, i.e. during stationary vehicle, controller controls electromagnetic brake dead electricity Guan Bi, now electromagnetic brake locking alternating current generator, car load parking；
Automatic parking releases: car load is energized, and when driver operation direction switch pedal of stepping on the throttle, now controller control electromagnetic brake obtains electric opening, and parking function releases, and alternating current generator can rotate according to the demand of gas pedal, and car load normally travels.
In order to prevent the misoperation of driver, the parking adding parking switch confirms function, when parking switch closes, car load driving functions limits, electromagnetic brake dead electricity closes, display instrument left-hand seat Brake lamp P icon lights, and now electromagnetic brake can not realize automatic parking removing function, and car load parking is static；When manually switch processed is opened, car load driving functions restriction cancellation, display instrument left-hand seat Brake lamp P icon extinguishes, and electromagnetic brake can automatically terminate according to whole vehicle state；When can effectively be prevented misoperation or other personnel's maloperation vehicle of driver by this switch, automatically terminating of vehicle parking, also can be realized under the state of emergency by this switch simultaneously, vehicle passes through parking braking function ramp to stop.
As in figure 2 it is shown, another object of the present invention is to provide a kind of electri forklift braking method, comprise the following steps:
(1) car load energising；
(2) controller judges whether parking switch is opened, it is judged that result, for being, enters next step, otherwise then shows that the P display lamp in instrument is bright, and returns step (2) and rejudge；
(3) controller judges that direction switch and gas pedal are the most effective, it is judged that result is for being, controller controls electromagnetic brake and obtains electric opening, and parking braking releases, and alternating current generator drives car load to travel；Otherwise then return step (3) to rejudge；
(4) controller judges that pedal brake is the most effective, it is judged that result is for being then AC motor brake, and car load slows down, otherwise then returns step (4) and rejudge；
(5) controller judges whether car load speed is zero, it is judged that result is for being that then controller controls electromagnetic brake dead electricity Guan Bi, and parking braking is effective, car load parking, otherwise then returns step (5) and rejudge.
I.e. first pass through key open car load energising, the most first judge the state of parking switch, parking switch if Guan Bi, then show that the P display lamp in instrument is bright, car load is in parking resting state；If parking switch is opened, then it is further continued for judging that direction switch and gas pedal are the most effective, if invalid, continues waiting for judging；If effectively, releasing parking braking, i.e. controller control electromagnetic brake obtains electric opening, and now alternating current generator can rotate according to the demand of gas pedal, drives car load normally travel；The above-mentioned method for releasing parking braking.Then, controller judges that pedal brake is the most effective, if effectively, alternating current generator is operated in on-position, and car load slows down；Controller further judges the speed of car load, if speed is zero, then controller controls electromagnetic brake dead electricity Guan Bi, now electromagnetic brake locking alternating current generator, and parking braking is effective, car load parking, above-mentioned for service brake and the method for automatic parking.
The beneficial effects of the present invention is: 1) by newly-increased electromagnetic brake and pedal brake, and combine the parts composition electri forklift brakes on former electri forklift, eliminate driving and the mechanical part of parking braking system complexity, reduce cost；2) electric braking of alternating current generator and electromagnetic brake is changed in service brake and parking braking by original mechanical braking change, it is achieved that brakes non-maintaining, more need not regularly replace friction plate；3) closed by the dead electricity of electromagnetic brake or obtain electric automatic parking and the automatic parking releasing opened and realize car load, decreasing the operation of driver, reduce the working strength of driver；4) during service brake, part kinetic energy is again converted to electric energy, improves the capacity usage ratio of car load, extends the use time of electri forklift；5) by electrical connection between parts, and the installation of complicated frame for movement, more conducively car load and space is not had to arrange.
Embodiment described above is only to be described the preferred embodiment of the present invention; not the scope of the present invention is defined; on the premise of designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (5)
1. an electri forklift brakes, it is characterized in that: include pedal brake, velocity sensor, parking switch, direction switch, gas pedal and the display instrument being connected with controller input, also include alternating current generator and the electromagnetic brake being connected with controller output end, described electromagnetic brake is fixed on alternating current generator, and above-mentioned each parts are by cell powers.
Electri forklift brakes the most according to claim 1, it is characterised in that: described battery, controller, alternating current generator, pedal brake and velocity sensor composition service braking system；The output of controller detection pedal brake, and drive alternating current generator to be operated in on-position to make vehicle deceleration or stopping；Controller controls the speed of vehicle according to the output valve of velocity sensor.
Electri forklift brakes the most according to claim 1, it is characterised in that: described battery, controller, electromagnetic brake, velocity sensor, parking switch, direction switch, gas pedal and display instrument composition parking braking system；The output valve of controller detection velocity sensor, and electromagnetic brake closedown is controlled when output valve is zero, it is achieved parking braking；When controller receives the signal of direction switch and gas pedal, control electromagnetic brake and open, release parking braking.
Electri forklift brakes the most according to claim 1, it is characterised in that: described electromagnetic brake is electric losing self-locking type electromagnetic brake.
5. a braking method for electri forklift brakes according to claims 1 to 4, comprises the following steps:
(1) car load energising；
(2) controller judges whether parking switch is opened, it is judged that result, for being, enters next step, otherwise then shows that the P display lamp in instrument is bright, and returns step (2) and rejudge；
(3) controller judges that direction switch and gas pedal are the most effective, it is judged that result is for being, controller controls electromagnetic brake and obtains electric opening, and parking braking releases, and alternating current generator drives car load to travel；Otherwise then return step (3) to rejudge；
(4) controller judges that pedal brake is the most effective, it is judged that result is for being then AC motor brake, and car load slows down, otherwise then returns step (4) and rejudge；
(5) controller judges whether car load speed is zero, it is judged that result is for being that then controller controls electromagnetic brake dead electricity Guan Bi, and parking braking is effective, car load parking, otherwise then returns step (5) and rejudge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610572544.4A CN105966380A (en) | 2016-07-20 | 2016-07-20 | Electric-forklift braking system and braking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610572544.4A CN105966380A (en) | 2016-07-20 | 2016-07-20 | Electric-forklift braking system and braking method |
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| CN105966380A true CN105966380A (en) | 2016-09-28 |
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| CN201610572544.4A Pending CN105966380A (en) | 2016-07-20 | 2016-07-20 | Electric-forklift braking system and braking method |
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Cited By (7)
| 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 |
| CN108099887A (en) * | 2017-11-21 | 2018-06-01 | 安徽合力股份有限公司 | A kind of automatic braking suitable for fork truck and unlock parking system and method |
| CN108544983A (en) * | 2018-03-26 | 2018-09-18 | 深圳市高德威技术有限公司 | Electri forklift accelerator open degree processing method |
| CN109205516A (en) * | 2018-08-29 | 2019-01-15 | 广州市广韬教学设备有限公司 | A kind of brake system of forklift and its braking method |
| CN111775718A (en) * | 2020-06-29 | 2020-10-16 | 华中科技大学 | Electric carrier and motor braking and stopping method thereof |
| CN112124280A (en) * | 2020-10-12 | 2020-12-25 | 南昌智能新能源汽车研究院 | VCU vehicle control unit of integrated electron parking control |
| CN115231477A (en) * | 2022-08-31 | 2022-10-25 | 安徽合力股份有限公司 | Forklift active braking control method and system based on power gear shifting transmission |
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Cited By (10)
| 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 |
| 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 |
| CN108099887A (en) * | 2017-11-21 | 2018-06-01 | 安徽合力股份有限公司 | A kind of automatic braking suitable for fork truck and unlock parking system and method |
| CN108544983A (en) * | 2018-03-26 | 2018-09-18 | 深圳市高德威技术有限公司 | Electri forklift accelerator open degree processing method |
| CN109205516A (en) * | 2018-08-29 | 2019-01-15 | 广州市广韬教学设备有限公司 | A kind of brake system of forklift and its braking method |
| CN111775718A (en) * | 2020-06-29 | 2020-10-16 | 华中科技大学 | Electric carrier and motor braking and stopping method thereof |
| CN111775718B (en) * | 2020-06-29 | 2021-07-27 | 华中科技大学 | Electric carrier and motor braking and stopping method thereof |
| CN112124280A (en) * | 2020-10-12 | 2020-12-25 | 南昌智能新能源汽车研究院 | VCU vehicle control unit of integrated electron parking control |
| CN115231477A (en) * | 2022-08-31 | 2022-10-25 | 安徽合力股份有限公司 | Forklift active braking control method and system based on power gear shifting transmission |
| CN115231477B (en) * | 2022-08-31 | 2024-05-14 | 安徽合力股份有限公司 | Forklift active braking control method and system based on power shift transmission |
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Application publication date: 20160928 |
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