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Braking system for electric industry truck

A braking system, industrial technology, applied in electric braking systems, electric vehicles, brake types, etc., can solve the problems of regenerative deceleration and other problems, and achieve the effect of reducing wear and overcoming wear and tear

Inactive Publication Date: 2010-05-05
JUNGHEINRICH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result here is that the regeneration size slows down

Method used

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  • Braking system for electric industry truck
  • Braking system for electric industry truck

Examples

Experimental program
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Embodiment Construction

[0017] The figure shows a three-phase motor which drives the drive wheels of an industrial truck, not shown. The drive wheels, not shown, have a first brake device 12 connected thereto. The brake device 12 can also be connected to the drive wheel The shafts of the motor 10 are connected. The three-phase drive motor 10, not explained in detail, is housed in blocks 14, 16 shown in phantom lines. The brake control device 18 is housed in another block shown in phantom lines. The brake pedal 20 in the industrial truck that is not shown is driven by the operator. The brake signal generator driven by the brake pedal 20 is installed in the block 22. The block 22 is also equipped with a monitoring device, which will be referred to later. monitoring device. The individual function signal of this block is input via arrow 24, which has no meaning for the operation of the described braking system.

[0018] A signal proportional to the desired braking force is supplied to comparator 26 . B...

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PUM

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Abstract

A braking system for battery-powered industrial trucks, comprising a three-phase driving motor which drives a driving wheel, a first braking device associated with the driving wheel, a brake pedal with which a braking signal generator is associated to generate an electric braking signal corresponding to a first desired braking force in response to the excursion of the brake pedal, a control devicefor the driving motor, a first conversion unit in the control device which converts said braking signal into a desired torque for the driving motor, a second conversion unit in the control device which converts the actual torque of the driving motor into an actual braking force, a comparator device in a braking control in which the first desired braking force is compared to the actual braking force to form a second desired braking force for the second braking device.

Description

technical field [0001] The invention relates to a braking system of an electric industrial truck. Background technique [0002] Most of such industrial trucks have drive wheels and idle load wheels driven by electric motors. As is known, brakes are associated with the drive and load wheels. The brakes for the drive wheels can also be connected directly to the drive motor. It is known that the brakes described employ hydraulic drum brakes. It is also known to drive motors using single disc spring force loaded magnetic brakes. Most of these are designed as so-called "safety brakes", since it is stipulated that if the electric control normally used in such industrial trucks fails, the vehicle needs to be slowed down in a universal manner. [0003] For industrial trucks provided with three-phase motors, it is also known to slow it down by means of a drive motor acting as a generator. The braking effect produced by the generator contributes to the realization of "coast braki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/26B60L7/18B60L7/24
CPCY10S303/02B60L7/18B60L7/24B66F9/07509
Inventor 塞巴斯蒂安·许特弗兰克·门肯尼斯-格奥尔格·尼森
Owner JUNGHEINRICH AG