CN101955140B - High-efficiency energy-saving forklift hoisting mechanism - Google Patents

High-efficiency energy-saving forklift hoisting mechanism Download PDF

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Publication number
CN101955140B
CN101955140B CN201010275746.5A CN201010275746A CN101955140B CN 101955140 B CN101955140 B CN 101955140B CN 201010275746 A CN201010275746 A CN 201010275746A CN 101955140 B CN101955140 B CN 101955140B
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guide frame
frame
electric cylinder
fork
cylinder
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CN101955140A (en
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曾卫东
潘亚敏
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Shanxi Guoli Information Technology Co Ltd
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Shanxi Guoli Information Technology Co Ltd
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Abstract

The invention relates to a battery forklift, in particular to a high-efficiency energy-saving forklift hoisting mechanism. The mechanism at least comprises a forklift body, a fork frame connected at the front end of the forklift body, forks and a guide frame, wherein the fork frame and the guide frame are in sliding connection through a guide groove; two horizontal forks on the left and right are in sliding connection with the fork frame through fork rods; the upper end of the guide frame is connected to the upper end of the forklift body through a left front boom drive cylinder and a right front boom drive cylinder, and the lower end of the guide frame is fixed on the chassis of the fork body; and the fork frame slides and moves up and down in the guide groove along the guide frame under the driving of a transmission belt/chain. The forklift hoisting mechanism is characterized in that: the lower end of a transverse lift rod is vertically fixedly connected with pull rods of electric cylinders; and the electric cylinders are fixed bilaterally symmetrically to the center of the guide frame. The forklift hoisting mechanism adopts an electric ball screw to replace a fork drive cylinder, a rotating cylinder of the booms, a steering cylinder, a fork transverse moving cylinder and other hydraulic cylinders of the battery forklift.

Description

A kind of high-efficiency energy-saving forklift hoisting mechanism
Technical field
The present invention relates to a kind of batter fork lift truck, particularly relate to a kind of high-efficiency energy-saving forklift hoisting mechanism, it adopts electric ball screw to replace the car fork of batter fork lift truck to drive the batter fork lift truck of the hydraulic rams such as oil cylinder, front large swing cylinder, steering cylinder, car fork transverse shifting oil cylinder.
Background technology
The power of current batter fork lift truck produces and drives oil cylinder, front large swing cylinder, steering cylinder, car fork transverse shifting oil cylinder to provide by car fork.When fork truck works, electrical motor drives Hydraulic Pump to rotate, then is connected to each oil cylinder by hydraulic tubing, and with manual and motorized valve oil circuit control.But there is following problem in existing hydraulic efficiency pressure system:
1, hydraulic tubing connects complicated and easily produces leakage of oil and system is installed inconvenient.
2, hydraulic efficiency is low, so batter fork lift truck generally all adopts independent motor to drive Hydraulic Pump.Because the principle of work of Hydraulic Pump and manufacture craft make the work efficiency of system lower, cause the waste of the energy.
3, the fluid-link steering of existing batter fork lift truck generally adopts steer motor ceaselessly full-load operation in fork truck working process, also result in unnecessary waste, and the operable time decreased after charging again, add the wearing and tearing of steer motor and Hydraulic Pump simultaneously.
4, hydraulic efficiency pressure system brings that the efficiency of fork truck entirety declines, reliability reduces, run that noise is large, energy consumption increases, and manufacturing cost is high, and system complex installation difficulty is large.
Summary of the invention
The object of the invention is to provide a kind of high-efficiency energy-saving forklift hoisting mechanism, to solve the technical matters that installation is inconvenient, driving efficiency is low, service life is low, operation noise is large, reliability is low that existing batter fork lift truck brings because adopting fluid power system.
The object of the present invention is achieved like this, a kind of high-efficiency energy-saving forklift hoisting mechanism, which comprises at least fork truck body, be connected to the jaw frame of fork truck body front end, jaw and guide frame, jaw frame and guide frame are by guide groove sliding block joint, two jaws on level one the first from left right side are by forked rod and jaw frame sliding block joint, guide frame upper end is connected to the upper end of fork truck body by large arm driving cylinder before left and right, guide frame lower end and fork truck body chassis are fixed, it is dynamic that jaw frame slides up and down title along guide frame at guide groove under belts/chain drives, article two, belts/chain one end and jaw frame are fixed, the other end is fixed on fork truck body, article two, be flexibly connected by horizontal lifting bar transition in the middle of belts/chain, it is characterized in that: horizontal lifting bar lower end is vertically fixedly connected with the push rod of electric cylinder, electric cylinder is fixed on symmetrical position, guide frame center.
Described electric cylinder comprises electrical motor, gear pair, gear case, transmission shaft, drive bearing and push rod, electrical motor is by change-speed box or directly connect gear pair, gear pair is fixed in gear case, gear pair is connection for transmission axle simultaneously, transmission shaft is connected with drive bearing bearing, and gear pair makes transmission shaft and motor reel form parallel construction; Electric cylinder is connected with the operating mechanism of fork truck body, controls push rod start, stop, stretching out, retract by operating mechanism.
Electric cylinder in described guide frame is two groups, stands vertically between the framework of guide frame left and right, and the left electric cylinder of two groups of electric cylinders and the equilibrium of right electric cylinder are arranged, left electric cylinder and the left push rod of right electric cylinder, right push rod and horizontal lifting bar is vertical is connected.
Position sensor in described electric cylinder; Position transduser is magnetic induction sensor or opto-electronic pickup, and the output signal of position transduser sends into operating mechanism; Operating mechanism drives actuating unit to guarantee the push rod telescopic location of electric cylinder, reaches the raised position controlling jaw.
Described push rod is electric ball screw, or the connector of electric ball screw, is used for set position transduser along push rod rectilinear movement direction position sensor.
The advantage that the present invention has is:
1, fork truck of the present invention adopts multiple motor drive respectively and control due to whole drive system, makes system effectiveness high, and system consumed energy hardly when not walking or not promoting.
2, fork truck of the present invention is convenient to realize the unmanned control of sequencing.The position of the electric ball screw detected in real time is sent to fork truck control system by the position feedback mechanism of each electric ball screw cylinder.The height forking object once, the anglec of rotation of rear steering wheel, travel distance, heap are unloaded the height of object by fork truck control system, position, track route record store.By after the arranging of operating personal, the height that full electric forklift can unload object according to the automatically different height forking object and heap is undertaken by former route that sequencing is unmanned to work.
3, electric ball screw cylinder of the present invention have forced stroke and work speed controllable precise, reliability high, leakage of oil, system advantage easy for installation can not be produced.Adopt ball screw assembly, or lead screw pair to carry out motion conversion, have that conversion efficiency is high, the advantage of long service life.
4, electric ball screw cylinder operation noise of the present invention is low, environmentally safe.Low cost of manufacture.
5, electric ball screw cylinder of the present invention has the advantage that the conformability of manufacture is good, be convenient to repair and replacement.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation;
Fig. 2 is the side-looking structural representation of Fig. 1;
Fig. 3 is electric cylinder structural representation;
Fig. 4 is the embodiment of the present invention 2 structural representation.
In figure: 1, jaw frame; 2, jaw; 3, forked rod; 4, belts/chain; 5, lifting bar; 6, guide frame; 7, push rod; 8, front large arm driving cylinder; 9, electric cylinder; 10, fork truck movable pulley; 11, Left Drive band/chain; 12, right belts/chain; 13, left electric cylinder; 14, right electric cylinder; 15, left push rod; 16, right push rod; 17, fork truck body; 18, jaw guide frame; 19, guide groove; 20, operating mechanism; 21, gear pair; 22, change-speed box; 23, electrical motor; 24, gear case; 25, transmission shaft; 26, drive bearing.
Detailed description of the invention
Embodiment 1
As Fig. 1, shown in Fig. 2, a kind of high-efficiency energy-saving forklift hoisting mechanism, which comprises at least fork truck body 17, be connected to the jaw frame 1 of fork truck body 17 front end, jaw 2 and guide frame 6, jaw frame 1 and guide frame 6 are by guide groove 19 sliding block joint, two jaws 2 on level one the first from left right side are by forked rod 3 and jaw frame 1 sliding block joint, guide frame 6 upper end is connected to the upper end of fork truck body 17 by large arm driving cylinder 8 before left and right, guide frame 6 lower end and fork truck body 17 chassis are fixed, there is jaw guide frame 18 at jaw frame 1 two ends, it is dynamic that jaw guide frame 18 slides up and down title along guide frame 6 at guide groove 19 under belts/chain 4 drives, article two, belts/chain 4 one end and jaw frame 1 are fixed, the other end is fixed on fork truck body 17, article two, be flexibly connected by horizontal lifting bar 5 transition in the middle of belts/chain 4, horizontal lifting bar 5 lower end is vertically fixedly connected with the push rod 7 of electric cylinder 9, electric cylinder 9 is fixed on symmetrical position, guide frame 6 center.
Electric cylinder 9 comprises electrical motor 23, gear pair 21, gear case 24, transmission shaft 25, drive bearing 26 and push rod 7, electrical motor 23 output shaft connects gear pair 21, or connect gear pair 21 by change-speed box 22, gear pair 21 is fixed in gear case 24, gear pair 21 is connection for transmission axle 25 simultaneously, transmission shaft 25 is connected with drive bearing 26 bearing, and gear pair 21 makes transmission shaft 25 and electrical motor 23 axle form parallel construction.Electric cylinder 9 is connected with the operating mechanism 20 of fork truck body 17, controls push rod 7 start, stop, stretching out, retract by operating mechanism 20.
Embodiment 2
As shown in Figure 3, in order to strengthen propulsive effort and the balance of fork truck, electric cylinder 9 in guide frame 6 is two groups, stand vertically between guide frame about 6 framework, the left electric cylinder 13 of two groups of electric cylinders and right electric cylinder 14 equilibrium are arranged, Left Drive band/chain 11 and right belts/chain 12 one end and jaw frame 1 are fixed, the other end is fixed on fork truck body 17, fork truck body has fork truck movable pulley 10 17 times, article two, be flexibly connected by horizontal lifting bar 5 transition in the middle of belts/chain 4, the left push rod 15 of left electric cylinder 13 and right electric cylinder 14, right push rod 16 is connected with horizontal lifting bar 5 is vertical.
Two groups of electric cylinders all comprise electrical motor 23, gear pair 21, gear case 24, transmission shaft 25, drive bearing 26 and push rod 7, left electric cylinder 13 is connected with the operating mechanism 20 of fork truck body 17 with the electrical motor of right electric cylinder 14, is controlled left push rod 15, right push rod 16 move by operating mechanism 20, move down, starts, is stopped.
Position sensor in described electric cylinder; Position transduser is magnetic induction sensor or opto-electronic pickup, and the output signal of position transduser sends into operating mechanism; Operating mechanism drives actuating unit to guarantee the push rod telescopic location of electric cylinder, reaches the raised position controlling jaw 2.
Described push rod 7 is electric ball screws, or the connector of electric ball screw, is used for set position transduser along push rod rectilinear movement direction position sensor.
Fork truck body 17 of the present invention comprises vehicular power-bottle, front large arm wheel word, car fork lateral driver device, steering hardware, front large arm wheel word comprises front large arm driving cylinder 8, car fork lateral driver device comprises the horizontal driving cylinder of left fork truck and right fork truck driving cylinder, and steering hardware comprises and turns to driving cylinder.Front large arm driving cylinder, left fork truck horizontal driving cylinder and right fork truck driving cylinder and turn to driving cylinder can adopt equally to adopt electric ball screw cylinder with electric cylinder or part.
Power control mechanism, position feedback mechanism, actuating unit and brake system is comprised in electric cylinder; Power control mechanism comprises motor and electric machine control system; Position feedback mechanism comprises the magnetic induction sensor coaxially arranged with motor shaft; The output signal of magnetic induction sensor sends into electric machine control system; Actuating unit comprises runner assembly and translation assembly; Runner assembly comprises bearing chamber, leading screw, two pressure bearings be arranged in bearing chamber; One end of leading screw is provided with outside thread, and a gear wheel shaft in its other end and gear pair is coaxially connected, and in the middle part of it, circumference face arranges the spacing pillow block vertical with leading screw axis direction; Spacing pillow block is arranged in bearing chamber, and two bearings are separately positioned on the axial both sides of spacing pillow block; Translation assembly comprises limit base, the execution bar be arranged in limit base, can be combined into the nut of ball screw assembly, or lead screw pair with leading screw; The external part performing bar is provided with connector, and the other end performing bar is provided with blind hole, and nut is embedded in blind hole, limit base is provided with the centre hole that can move axially for execution bar; Motor is fixed on a side of bearing chamber together with gear pair, and limit base is fixed on the another side of bearing chamber; Brake system comprises and motor or the coaxially solid brake disc of leading screw and can brake facing, brake disc and the brake plate composition braking brake of locking brake disc.Can arrange anti-wearing liner between centre hole and execution bar, anti-wearing liner adopts the preparation of graphite nylon material.
If the external part performing bar is not limited to rotate, then need the limiting stopper that two evaginations are set in the circumference side performing bar; Two position-limited troughs that can slide axially for two limiting stoppers are set simultaneously on limit base; Now limit base also needs to arrange two cover plates for airtight position-limited trough.Limiting stopper is bumping square or semicircle spherical protrusions.
The bearing on the axial both sides of spacing pillow block can adopt thrust baring, radial bearing.
In order to seal, between execution bar external part and limit base respective end, can oil sealing be set.
Also at limit base sidewall, a turnover gas filtering installation can be set, simultaneously as oil hole.
The position of the electric ball screw detected in real time is sent to fork truck control system by position feedback mechanism.Car fork driving cylinder operationally can detect at any time and forked the height off the ground of object, and can record and store.
When the motor of fork truck electric cylinder does not work, the braking brake of brake system will pin the position of current power ball-screw; When the electric motor work of car fork, braking brake will unclamp automatically.

Claims (1)

1. a forklift hoisting mechanism, which comprises at least fork truck body (17), be connected to the jaw frame (1) of fork truck body (17) front end, jaw (2) and guide frame (6), jaw frame (1) and guide frame (6) are by guide groove (19) sliding block joint, two jaws (2) on level one the first from left right side are by forked rod (3) and jaw frame (1) sliding block joint, guide frame (6) upper end is connected to the upper end of fork truck body (17) by large arm driving cylinder (8) before left and right, guide frame (6) lower end and fork truck body (17) chassis are fixed, jaw frame (1) slides up and down along guide frame (6) at guide groove (19) under belts/chain (4) drives, article two, belts/chain (4) one end and jaw frame (1) are fixed, the other end is fixed on fork truck body (17), article two, be flexibly connected by horizontal lifting bar (5) transition in the middle of belts/chain (4), it is characterized in that: horizontal lifting bar (5) lower end is vertically fixedly connected with the push rod (7) of electric cylinder (9), electric cylinder (9) is fixed on symmetrical position, guide frame (6) center, described electric cylinder (9) comprises electrical motor (23), gear pair (21), gear case (24), transmission shaft (25), drive bearing (26) and push rod (7), electrical motor (23) connects gear pair (21) by change-speed box, gear pair (21) is fixed in gear case (24), gear pair (21) is connection for transmission axle (25) simultaneously, transmission shaft (25) is connected with drive bearing (26) bearing, gear pair (21) makes transmission shaft (25) and electrical motor (23) axle form parallel construction, electrical motor (23) is connected with the operating mechanism (20) of fork truck body (17), control electrical motor (23) by operating mechanism (20) to start, stop, on move, move down, electric cylinder (9) in described guide frame (6) is two groups, vertically establish between the framework of guide frame (6) left and right, the left electric cylinder (13) of two groups of electric cylinders and right electric cylinder (14) equilibrium are arranged, left electric cylinder (13) and the left push rod (15) of right electric cylinder (14), right push rod (16) and horizontal lifting bar (5) is vertical is connected, described electric cylinder (9) interior position sensor, position transduser is magnetic induction sensor or opto-electronic pickup, and the output signal of position transduser sends into operating mechanism, operating mechanism drives actuating unit to guarantee the push rod telescopic location of electric cylinder, reaches the raised position controlling jaw (2), described push rod (7) is electric ball screw, or the connector of electric ball screw.
CN201010275746.5A 2010-09-08 2010-09-08 High-efficiency energy-saving forklift hoisting mechanism Active CN101955140B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102161095A (en) * 2011-03-30 2011-08-24 成都四星液压制造有限公司 Mould cavity depth control device of magnetic material automatic wet press machine
CN103057949A (en) * 2013-01-10 2013-04-24 浙江同济科技职业学院 Mechanical carrying device
CN103879927A (en) * 2014-03-28 2014-06-25 高佳太阳能股份有限公司 Silicon wafer transferring forklift limiting mechanism
CN107188078B (en) * 2017-06-09 2023-03-10 南通贝特医药机械有限公司 Anti-falling device

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Publication number Priority date Publication date Assignee Title
DE4022450A1 (en) * 1990-05-22 1991-11-28 Linde Ag FORKLIFT
JP2001171990A (en) * 1999-12-22 2001-06-26 Nippon Yusoki Co Ltd Forklift
CN100419304C (en) * 2006-11-02 2008-09-17 上海交通大学 Two stage speed changing directly driving mechanism
CN201264889Y (en) * 2008-09-05 2009-07-01 晃益齿轮工业股份有限公司 Ball bearing lead electric cylinder strengthening structure
CN101717060A (en) * 2009-12-20 2010-06-02 曾卫东 Fork lifting device and electric fork truck
CN101811652B (en) * 2010-04-01 2012-01-25 张波 Electric forklift

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