CN203344751U - Electric tray carriage braking system - Google Patents

Electric tray carriage braking system Download PDF

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Publication number
CN203344751U
CN203344751U CN 201320250913 CN201320250913U CN203344751U CN 203344751 U CN203344751 U CN 203344751U CN 201320250913 CN201320250913 CN 201320250913 CN 201320250913 U CN201320250913 U CN 201320250913U CN 203344751 U CN203344751 U CN 203344751U
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CN
China
Prior art keywords
switch
hydraulic
braking
brake
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320250913
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Chinese (zh)
Inventor
赵国会
蒋县宏
叶众道
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI SHANGLI FORKLIFT CO Ltd
SHANGHAI ET ELECTRIC TECHNOLOGY Co Ltd
Original Assignee
SHANGHAI SHANGLI FORKLIFT CO Ltd
SHANGHAI ET ELECTRIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI SHANGLI FORKLIFT CO Ltd, SHANGHAI ET ELECTRIC TECHNOLOGY Co Ltd filed Critical SHANGHAI SHANGLI FORKLIFT CO Ltd
Priority to CN 201320250913 priority Critical patent/CN203344751U/en
Application granted granted Critical
Publication of CN203344751U publication Critical patent/CN203344751U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an electric tray carriage braking system which comprises a battery pack, a permanent magnet brushless hub motor, a drive hub motor controller, a handle assembly, an oil tank, a hydraulic unit, a hydraulic braking assembly and an energy storage device module. An accelerator, a direction switch and a tiller switch in the handle assembly are connected with the drive hub motor controller through cable wiring harnesses, and operation signals are provided for the drive hub motor controller. The energy storage device module comprises an energy storage device, a multi-way valve block and a solenoid valve. The solenoid valve is connected with the drive hub motor controller through a cable wiring harness to be used for controlling hydraulic braking. A hydraulic brake of the hydraulic braking assembly has an effect on a braking disc which is fixed on the side face of a driving wheel of the permanent magnet brushless hub motor, and the braking disc rotates along with the permanent magnet brushless hub motor. According to the electric tray carriage braking system, the energy storage device stores surplus oil for carrying out lifting action by a hydraulic station for the hydraulic brake, whole carriage resources are further saved, and incomparable advantages are achieved.

Description

A kind of electric pallet truck brake system
Technical field
The utility model relates to a kind of electric pallet truck brake system, and relates in particular to the directly brake system of the electrocar of driving of wheel hub motor, belongs to electric automobiles.
Background technology
Electric pallet truck is a kind of novel storage facilities, uses battery to provide power source, all-electric drive pattern.Mainly be used in logistics, storage links, born the transportation carrying function of goods.
In the prior art, the brake system of electric pallet truck generally adopts powerless magnetic brake to complete.Do so usually can exist making the electric pallet truck complex structure, easy care or safeguard more complicated, do not need professional service personnel, promoted cost; And adopt electromagnetic power-off brake to cause energy consumption higher, and lock torque is less can not meet some special occasions, and the not good reaction of braking effect is insensitive simultaneously.
The utility model content
Technical problem to be solved in the utility model is for the deficiency in present technology, the electric pallet truck brake system that provides a kind of wheel hub motor directly to drive, the energy storage when hydraulic pump works of the fairly simple employing hydraulic energy storage device of this brake system structure, start braking during standstill after driving service brake to move, good braking effect, fault rate is lower, does not need the professional to safeguard, has promoted work efficiency.The braking method that the utility model relates to possesses good programmability, good energy conversion efficiency; Especially can meet the performance of parking brake of all occasions.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of electric pallet truck brake system, comprise battery pack, pm brushless in-wheel motor, drive hub electric machine controller, handle assembly, fuel tank, hydraulic pressure unit, hydraulic braking assembly, closed-center system module;
Described battery pack, drive hub electric machine controller, pm brushless in-wheel motor connect by cable, and the drive hub electric machine controller sends the battery pack electric energy to pm brushless in-wheel motor;
Described handle assembly comprises accelerator, direction switch, tiller switch, switch hoists; It is characterized in that,
Accelerator in described handle assembly, direction switch, tiller switch use core of a cable to be connected to the hub driven motor controller, provide operation signal to the hub driven motor controller;
Described hydraulic pressure unit comprises oil pump, pump motor, contactless switch, lift oil tank, and described oil pump and pump motor integrate, and between described oil pump, lift oil tank and fuel tank, by fuel tank, is connected, by oil transmission in fuel tank; Between described pump motor, contactless switch, battery pack and battery pack, by core of a cable, be connected, the switch that hoists in described handle assembly connects contactless switch by core of a cable, and described contactless switch, according to on-off signal adhesive and shutoff, is opened and turn-offs pump motor;
Described closed-center system module comprises accumulator, multiway valve piece, electromagnetic valve, described accumulator interface connected with multiple valve piece, between described multiway valve piece and fuel tank, oil pump, by oil pipe, be connected, the multiway valve piece is installed electromagnetic valve, and described electromagnetic valve is connected for controlling the hydraulic braking assembly by core of a cable with the drive hub electric machine controller; Described multiway valve piece is connected by oil pipe with the hydraulic braking assembly;
Described hydraulic braking assembly comprises hydraulic brake, brake disc, and hydraulic brake acts on brake disc, and brake disc is fixed on the side of the drive wheel of pm brushless in-wheel motor, with pm brushless in-wheel motor, rotates.
Electric pallet truck of the present utility model, used pm brushless in-wheel motor directly to drive vehicle operating, saved general reducing gear or speed reduction gearing, saved R&D costs.Aspect brake system, the utility model adopts automatically controlled control service brake, whether the drive hub electric machine controller carries out regenerative brake by detection accelerator, the identification of direction switch signal, make stopping distance to carry out Software match according to different vehicles, existing good braking effect, reclaim again unnecessary electric energy, improved the car load flying power; After service brake completes, carry out hydraulic parking braking, hydraulic braking possesses highly sensitive, lock torque is large, meet the demand of the larger Parking moment of needs when tray carriage is fully loaded climbs maximum grade, simultaneously, accumulator stores the oil mass that it is unnecessary that Hydraulic Station is carried out the action that hoists for hydraulic brake, further save the car load resource, possessed incomparable preceence.
The accompanying drawing explanation
Fig. 1 is electric pallet truck brake system schematic diagram of the present utility model.
The structured flowchart that Fig. 2 is electric pallet truck brake system of the present utility model.
Fig. 3 is electric pallet truck brake control method schematic flow sheet of the present utility model.
Wherein,
The 1-battery pack; The 2-pm brushless in-wheel motor; 3-hub motor control device; The 4-handle assembly; The 5-fuel tank; The 6-hydraulic pressure unit; 7-hydraulic braking assembly; 8-closed-center system module; The 41-lifting switch; The 42-accelerator; The 43-direction switch; 44-tiller switch; The 61-gear type pump; The 62-pump motor; The 63-contactless switch; The 64-lift oil tank; The 71-hydraulic brake; The 72-brake disc; The 81-accumulator; The 82-electromagnetic valve; 83-multiway valve piece.
The specific embodiment
Below according to the drawings and specific embodiments, the utility model is described in further detail:
The utility model provides a kind of electronic transportation tray car brake system, as shown in Figure 1, battery pack 1, pm brushless in-wheel motor 2, drive hub electric machine controller 3, handle assembly 4, fuel tank 5, hydraulic pressure unit 6, hydraulic braking assembly 7, closed-center system module 8 have been comprised.
Battery pack 1, pm brushless in-wheel motor 2, drive hub electric machine controller 3,4 of handle assemblies connect by core of a cable, and hub driven motor controller 3 completes the delivery of electrical energy of battery pack 1 driving and the braking of car load by the signal that detects handle assembly 4 to pm brushless in-wheel motor 2.
As shown in Figure 1 and Figure 2, handle assembly 4 comprises the switch 41 that hoists, accelerator 42, direction switch 43, tiller switch 44; Accelerator 42, direction switch 43, tiller switch 44 use core of a cable to be connected to hub driven motor controller 3; Hydraulic pressure unit 6 comprises oil pump 61, pump motor 62, contactless switch 63, lift oil tank 64, oil pump 61 and pump motor 62 integrate, contactless switch 63, the switch 41 that hoists are connected with battery pack 1 by core of a cable, open and turn-off adhesive, turn-off contactless switch 63 according to the switch 41 that hoists and send battery pack 1 electric energy 62 drive oil pump 61 operations of to pump drive motor;
Closed-center system module 8, fuel tank 5, hydraulic braking assembly 7 connect by oil pipe as shown in Figure 1 and Figure 2, and hydraulic braking assembly 7 comprises hydraulic brake 71, brake disc 72, and brake disc 72 is arranged on the drive wheel of permanent magnetism wheel hub motor 2; Closed-center system module 8 comprises accumulator 81, electromagnetic valve 82, multiway valve piece 83, the interface of accumulator 81 is arranged on multiway valve piece 83, multiway valve piece 83 is connected by oil pipe by between oil pipe and oil pump 61, fuel tank 5, electromagnetic valve 82 is installed on multiway valve piece 83, and electromagnetic valve 82 is connected by core of a cable with hub driven motor controller 3; Energy in accumulator 81 is provided by oil pump 61, and when carrying out enhancing action, when oil pump 61 enters lift oil tank 63 by oil pressure, a part of oil will enter accumulator 81 storages; At hub driven motor controller 3, detect while meeting the braking during standstill condition, control electromagnetic valve 82 actions, oil pressure in accumulator 81 is entered in hydraulic brake 71, and hydraulic brake 71 acts on the drive wheel of pm brushless in-wheel motor 2 by brake disc 72, forces drive wheel to be stopped fully extremely;
Referring to Fig. 3, the control method of above-mentioned a kind of electric pallet truck brake system, it comprises following step:
Step S1, after the operator starts to operate vehicle, hub driven motor controller 3 is according to signal driver pm brushless in-wheel motor 2 operations of handle assembly 4, and vehicle is in normal driving mode;
Step S2, under normal driving mode, hub driven motor controller 3 constantly according to accelerator 42 signals in handle assembly 4 be whether 0, whether whether direction switch 43 exist the signal, tiller switch 44 signals that advance or retreat invalid, simultaneously, need to judge self whether abnormal or fault, execution step S5 while meeting, otherwise continue the current driving drive pattern;
Step S3, carry out regeneration and reclaim braking mode, regeneration recovery braking is given the lock torque of pm brushless in-wheel motor 2 with respect to the drive torque opposite direction by hub driven motor controller 3, energy unnecessary in travelling is stored in battery pack 1 by pm brushless in-wheel motor 2 generatings, for using next time.
Step S4, when end of braking is reclaimed in regeneration, car speed is tending towards 0, when the hub driven motor controller 3 judgement speed of a motor vehicle are 0, is not to continue current regeneration at 0 o'clock to reclaim braking mode, otherwise carries out S5;
Step S5, the electromagnetic valve 82 that braking during standstill is controlled in closed-center system module 8 by hub driven motor controller 3, with the oil circuit between conducting accumulator 81 and hydraulic brake 71, oil pressure flows into hydraulic brake 71, finally by brake disc 72, is acted on the drive wheel of pm brushless in-wheel motor 2 and is completed.
Step S6: after Parking stops, whether the hub driven motor controller need to detect constantly to exist and re-power action;
Step S7, re-power if exist, and carries out self-checking function, self check judge whether by, exist abnormal failure to carry out alarm mode;
Step S8, do not cut off the power supply or re-powering self check whether meet under normal circumstances the driven driving conditions, keep current state while not meeting, drive condition and braking condition are contrary: comprise that accelerator 42 signals are not 0, direction switch 43 exists and advance or backing signal, tiller switch 44 invalidating signals, hub driven motor controller 3 self do not have abnormal failure.
Step S9, in the braking during standstill situation, there is the driven driving conditions, remove braking during standstill, removing braking during standstill is opened or is turn-offed by hub driven motor controller 3 control electromagnetic valves 82, energy in hydraulic brake 71 is discharged, thereby the brake disc 72 that makes to be pressed on the drive wheel of pm brushless in-wheel motor 2 unclamps.Enter normal driving mode, hub driven motor controller 3 is according to signal driver pm brushless in-wheel motor 2 operations of handle assembly 4.
The brake system that the utility model provides and control method, used In-wheel motor driving, if use conventional electromagnetic braking to have the lock torque deficiency, can not meet the demands.Simultaneously, use hydraulic brake, by accumulator, provide energy, can't help pump motor to carry out separately function, only when pump motor is carried out enhancing action to the elevating ram fuel feeding to accumulator in stored energy.Braking maneuver is controlled by the hub driven motor controller fully, is divided into service brake (regenerated energy reclaims braking) and braking during standstill (stopping brake), and service brake is completed by wheel hub motor fully, and lock torque, car load stopping distance can mate flexibly; Braking during standstill is completed by hydraulic brake, without pump, gives separately its fuel feeding, possesses incomparable preceence.
Although describe and illustrate the utility model by certain or some peculiar setups here; its purpose does not also lie in described details; those skilled in the art may carry out various modifications and structure modify in the patent claimed range, still belong to protection domain of the present utility model.
The utility model relates to partly all same as the prior art or employing prior aries to be realized.

Claims (1)

1. an electric pallet truck brake system, comprise battery pack, pm brushless in-wheel motor, drive hub electric machine controller, handle assembly, fuel tank, hydraulic pressure unit, hydraulic braking assembly, closed-center system module;
Described battery pack, drive hub electric machine controller, pm brushless in-wheel motor connect by cable, and the drive hub electric machine controller sends the battery pack electric energy to pm brushless in-wheel motor;
Described handle assembly comprises accelerator, direction switch, tiller switch, switch hoists; It is characterized in that,
Accelerator in described handle assembly, direction switch, tiller switch use core of a cable to be connected to the hub driven motor controller, provide operation signal to the hub driven motor controller;
Described hydraulic pressure unit comprises oil pump, pump motor, contactless switch, lift oil tank, and described oil pump and pump motor integrate, and between described oil pump, lift oil tank and fuel tank, by fuel tank, is connected, by oil transmission in fuel tank; Between described pump motor, contactless switch, battery pack and battery pack, by core of a cable, be connected, the switch that hoists in described handle assembly connects contactless switch by core of a cable, and described contactless switch, according to on-off signal adhesive and shutoff, is opened and turn-offs pump motor;
Described closed-center system module comprises accumulator, multiway valve piece, electromagnetic valve, described accumulator interface connected with multiple valve piece, between described multiway valve piece and fuel tank, oil pump, by oil pipe, be connected, the multiway valve piece is installed electromagnetic valve, and described electromagnetic valve is connected for controlling the hydraulic braking assembly by core of a cable with the drive hub electric machine controller; Described multiway valve piece is connected by oil pipe with the hydraulic braking assembly;
Described hydraulic braking assembly comprises hydraulic brake, brake disc, and hydraulic brake acts on brake disc, and brake disc is fixed on the side of the drive wheel of pm brushless in-wheel motor, with pm brushless in-wheel motor, rotates.
CN 201320250913 2013-05-09 2013-05-09 Electric tray carriage braking system Expired - Fee Related CN203344751U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320250913 CN203344751U (en) 2013-05-09 2013-05-09 Electric tray carriage braking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320250913 CN203344751U (en) 2013-05-09 2013-05-09 Electric tray carriage braking system

Publications (1)

Publication Number Publication Date
CN203344751U true CN203344751U (en) 2013-12-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320250913 Expired - Fee Related CN203344751U (en) 2013-05-09 2013-05-09 Electric tray carriage braking system

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103253142A (en) * 2013-05-09 2013-08-21 上海易特电动科技股份有限公司 Electric pallet truck braking system and control method
CN106672012A (en) * 2016-12-21 2017-05-17 李德 Pedal wheel type hydraulic braking device of mining electric locomotive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103253142A (en) * 2013-05-09 2013-08-21 上海易特电动科技股份有限公司 Electric pallet truck braking system and control method
CN103253142B (en) * 2013-05-09 2015-10-21 上海易特电动科技股份有限公司 A kind of electric pallet truck brake system and control method
CN106672012A (en) * 2016-12-21 2017-05-17 李德 Pedal wheel type hydraulic braking device of mining electric locomotive

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131218

Termination date: 20150509

EXPY Termination of patent right or utility model