CN105034797A - Rear wheel drive electric forklift provided with wet-type braking front axles - Google Patents
Rear wheel drive electric forklift provided with wet-type braking front axles Download PDFInfo
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- CN105034797A CN105034797A CN201510475781.4A CN201510475781A CN105034797A CN 105034797 A CN105034797 A CN 105034797A CN 201510475781 A CN201510475781 A CN 201510475781A CN 105034797 A CN105034797 A CN 105034797A
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Abstract
The invention relates to a rear wheel drive electric forklift provided with wet-type braking front axles. The electric forklift comprises a front axle mechanism, a hoisting system and a forklift body system. The forklift body system comprises a frame, a driving rear axle and a driving steering mechanism. The front axle mechanism has a split type structure, and is composed of a left front axle and a right front axle. The left front axle and the right front axle are the same in structure but opposite in direction, and are respectively arranged on the left side and right side of the front part of the frame. The left front bridge or the right front bridge comprises a tubular axle housing, a planetary gear output mechanism, a wet-type braking mechanism, and a left front wheel or a right front wheel; the planetary gear output mechanism and the wet-type braking mechanism are disposed inside the axle housing; a housing cover is arranged at the axial end of the axle housing; the planetary gear output mechanism comprises an output shaft and a planetary gear mechanism; one end of the output shaft extends to the exterior of the axle housing; and the left front wheel or the right front wheel is arranged at the outward extending end of the output shaft. According to the invention, the load supporting point of a gantry of the hoisting system is lowered, the size of a front overhang is reduced by 19%, the turning radius of the electric forklift is reduced to 1445mm from 1600mm, and the ergonomic design of the electric forklift is optimized.
Description
Technical field
The invention belongs to the art drive systems field of carrying vehicle, be specifically related to back-wheel drive electri forklift.
Background technology
At present, the heavy forklift front bridge of battery balance generally adopts drum-type (dry type) to brake, and this braking model mainly exists following shortcoming and defect:
drg oad is large, causes door frame front overhang large, and specified liter weight reduces.Because the braking force of drg is relevant to himself size, when car load requires that braking force is larger, drg external diameter is larger.So door frame, gear shelf, pallet fork all will move forward, and front overhang increases, and specified liter weight reduces;
drg oad is large, can not be placed in wheel rim, and cause wheelspan increase, the increase of car load width, turn radius increases;
door frame load position of the fulcrum is high, and at pontic center, the dump ram arm of force is short, the pressure in cylinder can be caused comparatively large, and then cause hydraulic system fault;
propons oad is comparatively large, takies car load inner space comparatively large, can reduce installing space and the navigating mate leg room of storage battery.The problems referred to above seriously constrain the performance of the heavy fork truck car load of battery balance.
Summary of the invention
In order to solve the above-mentioned shortcoming and defect of drum-type (dry type) brake front axle, the invention provides and a kind of there is the back-wheel drive electri forklift with wet braking propons that front overhang is little, nominal payload is large, turn radius is little.
The back-wheel drive electri forklift with wet braking propons comprises front axle mechanism, tackling system and bodywork system, and described bodywork system comprises vehicle frame, drives back axle and travel steering hardware;
Described front axle mechanism is split type, is made up of left front bridge and right front bridge; Described left front bridge is contrary with right front bridge construction equidirectional, is located at left side and the right side of vehicle frame front portion respectively;
Described left front bridge or right front bridge comprise the housing 11 of tubulose, satellite gear output mechanism, wet brakign mechanism and the near front wheel or off front wheel, and described satellite gear output mechanism and wet brakign mechanism are all positioned at housing 11, and one end of housing 11 axis is provided with cap 111;
Described satellite gear output mechanism comprises output shaft and planetary wheeling mechanism, and one end of output shaft extends axle housing outside; Described the near front wheel or off front wheel are located on the overhanging end of output shaft;
Described wet brakign mechanism comprises friction lining 17, piston sheet 114 and the brake cylinder assembly 19 of more than the partition 16 of more than two panels, two panels.
Described planetary wheeling mechanism comprises internally toothed annulus 118, sun wheel 117, sun wheel shaft, plural planetary wheel 13 and pinion carrier 12; The outer end of the output shaft 119 of described satellite gear output mechanism is discoid, and the axial other end of housing being positioned at tubulose is outside, and the diameter of disk is less than housing radial diameter; The inner of output shaft 119 is flexibly connected one end of sun wheel shaft, and the other end of sun wheel shaft is big disk, and described sun wheel shaft can be rotated relative to output shaft 119, can realize again moving axially, and described sun wheel 117 is located in sun wheel shaft; Described pinion carrier 12 is set on the inner of output shaft 119, and plural planetary wheel 13 is located in pinion carrier 12, plural planetary wheel 13 respectively with internally toothed annulus 118, sun wheel 117 engaged transmission.
Partition 16 more than described two panels and friction lining 17 more than two panels are all set in the big disk of sun wheel shaft circumferentially.
Described stop mechanism also comprises bearing 113 and depression bar 112; The axial middle inside of described cap 111 is provided with inwardly protruded interior tubular axis; Described bearing 113 is circular, is set on the interior tubular axis inside cap 111; The middle part of described depression bar 112 is positioned at the tubular axis of cap 111; Partition 16 more than described two panels and friction lining 17 more than two panels, piston sheet 114 and bearing 113 are coaxially arranged successively; The inner of depression bar 112 is pressed on piston sheet 114 by plain bearing 8, the outer end of depression bar 112 extends pump case 192 side that cap 111 outside is connected to brake cylinder assembly 19, brake cylinder assembly 19 is hinged on cap 111 by bearing pin 100, and the rod end of the push rod 195 of brake cylinder assembly 19 is positioned on the outer face of cap 111.
The axle housing 11 of the tubulose corresponding with partition 16 more than two panels and friction lining 17 more than two panels offers breather hole, and the cooperation of breather hole place is provided with porous plug 15.
advantageous Effects of the present invention embodies in the following areas:
1, the door frame load settlement of support of tackling system of the present invention, makes the dump ram arm of force increase, reduces the pulling force of dump ram, dump ram can be arranged in below base plate, add the leg room of operator, optimize the Ergonomics design of car load.
2, adopt wheel limit planetary reduction gear structure design, reduce axle housing overall dimensions, increase the ground Clearance, ensure that car load is when wheelbase is shorter, still has larger storage battery assembly space.
3, enclosed multi-disc self-cooled oil-immersed multi-disk brake is adopted, compact conformation, dust-proof, waterproof good.Larger brake torque can be provided under less pressure, efficiently solve dry brake life-span short, relevant issues such as fault is many.
4, internal gear oil adopts self-cooled, and unique braking liquid supply mode enormously simplify hydraulic efficiency pressure system, and productive costs reduces greatly.
5, drive the overall dimensions of the housing 11 of tubulose on propons less, overall dimensions are decreased to 174mm(by 278mm and see Fig. 1, size X1), the ground Clearance is comparatively large, when using little tire, still has good crossing ability.
6, before planet circular system slows down, load wet braking, adopt the mode of embracing floated semiaxis to realize braking, required braking force is little, and braking steadily.
7, the multifunctional wet braking axle of parking, service brake is integrated.
8, existing drum brake mechanism oad is large, cause door frame front overhang large, front overhang refers to and drives front axle centre to the distance of door frame outer face (see Fig. 1, size X2), usual front overhang is greater than 420mm, for meeting the requirement of rated load weight, need counterweight be strengthened, making car load load-carrying reach 3000kg.The present invention makes the size of front overhang reduce 19%, is namely reduced to 343mm by 425mm.Front overhang reduces to be conducive to the stability of cargo lifting and the load carrying ability of pallet fork.
9, the present invention makes the turn radius of electri forklift be reduced to 1445mm by 1600mm, because needs increase balancing gravity, and empty/fully loaded car load center of gravity need relevant position in three fulcrums, to ensure the stability of traveling and stacking, therefore the wheelbase of existing electri forklift need be greater than 1250mm, turn radius is not less than 1600mm.It is 3300mm (pallet 1200*1200mm, gap 200mm) that the reduction of turn radius can realize right angle stacking passage width, and under equal conditions, passage width reduces 240mm, is namely reduced to 3300mm by 3540mm.
10, door frame position of the fulcrum (see Fig. 1, size X3): door frame load position of the fulcrum is high, and position of the fulcrum height is not less than 290mm, and at pontic center, the dump ram arm of force is short, can cause the pressure in cylinder comparatively large, and then cause hydraulic system fault.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is front axle mechanism and tackling system structural representation;
Fig. 4 is front axle mechanism structural representation;
Fig. 5 is left front bridge construction cutaway view;
Fig. 6 is the H-H cutaway view of Fig. 5;
Fig. 7 is sun wheel structural representation;
Fig. 8 is left front axle drive sketch;
Fig. 9 is brake cylinder constructional drawing.
Part sequence number in upper figure: left front bridge 1, right front bridge 2, tackling system 3, bodywork system 4, housing 11, pinion carrier 12, planetary wheel 13, baffle ring 14, porous plug 15, partition 16, friction lining 17, plain bearing 18, brake cylinder assembly 19, bearing pin 100, cap 111, depression bar 112, bearing 113, piston sheet 114, Compress Spring 115, compressing tablet 116, sun wheel 117, internally toothed annulus 118, output shaft 119, pump case 192, spring 193, internal piston 194, push rod 195.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
Embodiment
See Fig. 1 and Fig. 2, the back-wheel drive electri forklift with wet braking propons comprises front axle mechanism, tackling system and bodywork system; Bodywork system comprises vehicle frame, drives back axle and travel steering hardware.See Fig. 3 and Fig. 4, front axle mechanism is split type, is made up of left front bridge and right front bridge; Described left front bridge is contrary with right front bridge construction equidirectional, and positional symmetry, is located at left side and the right side of vehicle frame front portion respectively.
See Fig. 5, left front bridge or right front bridge comprise the housing 11 of tubulose, satellite gear output mechanism, wet brakign mechanism and the near front wheel or off front wheel.Satellite gear output mechanism and wet brakign mechanism are all positioned at housing 11, and one end of housing 11 axis is provided with cap 111.
Satellite gear output mechanism comprises output shaft 119 and planetary wheeling mechanism, and one end of output shaft 119 extends housing 11 outside, and the near front wheel or off front wheel are located on the overhanging end of output shaft 119.Planetary wheeling mechanism comprises internally toothed annulus 118, sun wheel 117, sun wheel shaft, three planetary wheels 13 and pinion carrier 12.The outer end of the output shaft 119 of satellite gear output mechanism is discoid, and the diameter of disk is less than housing radial diameter; The inner of output shaft 119 is flexibly connected one end of sun wheel shaft, and see Fig. 7, the other end of sun wheel shaft is big disk, and sun wheel shaft can be rotated relative to output shaft 119, and can realize again moving axially, sun wheel 117 is located in sun wheel shaft by spline joint.Pinion carrier 12 is set on the inner of output shaft 119 by spline fitted, and three planetary wheels 13 are uniform to be installed in pinion carrier 12, three planetary wheels 13 respectively with internally toothed annulus 118, sun wheel 117 engaged transmission, see Fig. 6.
Wet brakign mechanism comprises friction lining 17, bearing 113, depression bar 112, piston sheet 114 and the brake cylinder assembly 19 of more than the partition 16 of more than two panels, two panels.Partition 16 more than two panels and friction lining 17 more than two panels, piston sheet 114 and bearing 113 are coaxially arranged successively.Partition 16 more than two panels and friction lining 17 more than two panels are all sleeved on the big disk of sun wheel shaft circumferentially.The housing 11 of the tubulose corresponding with partition 16 more than two panels and friction lining 17 more than two panels offers breather hole, the cooperation of breather hole place is provided with porous plug 15, before using, open porous plug 15, on partition 16 and friction lining 17, gear oil is injected by breather hole, this gear oil both can realize the lubrication of gear, can realize again the function of oil-immersed multi-disk brake.Bearing 113 is circular, and the axial middle inside of cap 111 is provided with inwardly protruded interior tubular axis, and circular bearing 113 is sleeved on the interior tubular axis inside cap 111.The middle part of depression bar 112 is positioned at the tubular axis of cap 111, the inner of depression bar 112 is pressed on piston sheet 114 by plain bearing 8, the outer end of depression bar 112 extends pump case 192 side that cap 111 outside is connected to brake cylinder assembly 19, brake cylinder assembly 19 is hinged on cap 111 by bearing pin 100, and the rod end of the push rod 195 of brake cylinder assembly 19 is positioned on the outer face of cap 111.
See Fig. 9, pump case 192, under the effect of internal piston 194 and push rod 195, with the bearing pin 100 on cap 111 for fulcrum, promotes depression bar 112 and withstands plain bearing 18 under leverage, plain bearing 18 and piston sheet 114 are fitted, and then realizes partition 16 and friction lining 17 laminating braking.
Principle of work of the present invention is described as follows:
During use,
In the process of moving, see Fig. 8, output shaft 119 rotates car load, because output shaft 119 and pinion carrier 12 are by splined, thus pinion carrier 12 synchronous axial system, three planetary wheels 13 in pinion carrier 12 also rotate thereupon.Now three planetary wheels 13, internally toothed annulus 118 and sun wheels 117 just define the planet circular system of a differential, and mouth is sun wheel 117, and then drive partition 16 to rotate together with sun wheel shaft.
When braking liquid enters brake cylinder assembly 19, it promotes the internal piston 194 of brake cylinder assembly, see Fig. 5, overcome the application force motion of spring 193, push rod 195 is made to withstand on cap 111, brake cylinder assembly with bearing pin 100 for fulcrum, under leverage, promote depression bar 112 to move, depression bar 112 promotes plain bearing 18, makes piston sheet 114 pressing friction sheet 17 and partition 16, and the braking force produced between friction lining 17 and partition 16 just stops sun wheel 117 to be rotated, thus stop output shaft 119 to rotate, and then achieve driving wet braking function.When stopping liquid processed supply, three Compress Springs 115 just promote piston sheet 114 and get back to original position, thus realize service brake releasing.
Claims (5)
1. have the back-wheel drive electri forklift of wet braking propons, comprise front axle mechanism, tackling system and bodywork system, described bodywork system comprises vehicle frame, drives back axle and travel steering hardware, it is characterized in that:
Described front axle mechanism is split type, is made up of left front bridge and right front bridge; Described left front bridge is contrary with right front bridge construction equidirectional, is located at left side and the right side of vehicle frame front portion respectively;
Described left front bridge or right front bridge comprise the housing (11) of tubulose, satellite gear output mechanism, wet brakign mechanism and the near front wheel or off front wheel, described satellite gear output mechanism and wet brakign mechanism are all positioned at housing (11), and one end of housing (11) axis is provided with cap (111);
Described satellite gear output mechanism comprises output shaft and planetary wheeling mechanism, and one end of output shaft extends outside; Described the near front wheel or off front wheel are located on the overhanging end of output shaft;
Described wet brakign mechanism comprises friction lining (17), piston sheet (114) and the brake cylinder assembly (19) of more than the partition (16) of more than two panels, two panels.
2. the back-wheel drive electri forklift with wet braking propons according to claim 1, is characterized in that: described planetary wheeling mechanism comprises internally toothed annulus (118), sun wheel (117), sun wheel shaft, plural planetary wheel (13) and pinion carrier (12);
The outer end of the output shaft (119) of described satellite gear output mechanism is discoid, and the axial other end of housing being positioned at tubulose is outside, and the diameter of disk is less than housing radial diameter; The inner of output shaft (119) is flexibly connected one end of sun wheel shaft, and the other end of sun wheel shaft is big disk, and described sun wheel shaft can be rotated relative to output shaft (119), and can realize again moving axially, described sun wheel (117) is located in sun wheel shaft; Described pinion carrier (12) is set on the inner of output shaft (119), and plural planetary wheel (13) is located in pinion carrier (12), plural planetary wheel (13) respectively with internally toothed annulus (118), sun wheel (117) engaged transmission.
3. the back-wheel drive electri forklift with wet braking propons according to claim 2, is characterized in that: partition (16) more than described two panels and friction lining (17) more than two panels are all set in the big disk of sun wheel shaft circumferentially.
4. the back-wheel drive electri forklift with wet braking propons according to claim 1, is characterized in that: described stop mechanism also comprises bearing (113) and depression bar (112); The axial middle inside of described cap (111) is provided with inwardly protruded interior tubular axis; Described bearing (113), for circular, is set on the interior tubular axis of cap (111) inner side; The middle part of described depression bar (112) is positioned at the tubular axis of cap (111); Partition (16) more than described two panels and friction lining (17) more than two panels, piston sheet (114) and bearing (113) are coaxially arranged successively; The inner of depression bar (112) is pressed on piston sheet (114) by plain bearing (18), the outer end of depression bar (112) extends pump case (192) side that cap (111) outside is connected to brake cylinder assembly (19), brake cylinder assembly (19) is hinged on cap (111) by bearing pin (100), and the rod end of the push rod (195) of brake cylinder assembly (19) is positioned on the outer face of cap (111).
5. the back-wheel drive electri forklift with wet braking propons according to claim 1, it is characterized in that: the housing (11) of the tubulose corresponding with partition (16) more than two panels and friction lining (17) more than two panels offers breather hole, the cooperation of breather hole place is provided with porous plug (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475781.4A CN105034797A (en) | 2015-08-06 | 2015-08-06 | Rear wheel drive electric forklift provided with wet-type braking front axles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475781.4A CN105034797A (en) | 2015-08-06 | 2015-08-06 | Rear wheel drive electric forklift provided with wet-type braking front axles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105034797A true CN105034797A (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510475781.4A Pending CN105034797A (en) | 2015-08-06 | 2015-08-06 | Rear wheel drive electric forklift provided with wet-type braking front axles |
Country Status (1)
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| CN (1) | CN105034797A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061149A (en) * | 2017-12-17 | 2018-05-22 | 安徽合力股份有限公司 | The mounting structure of taper roll bearing at a kind of electri forklift output axle shaft |
| EP3388705A1 (en) * | 2017-04-11 | 2018-10-17 | Kabushiki Kaisha Toyota Jidoshokki | Wet brake |
| CN112324491A (en) * | 2020-10-11 | 2021-02-05 | 中国煤炭科工集团太原研究院有限公司 | Split type storage battery chute carrier capable of being disassembled rapidly to enter and exit cage |
| CN115215265A (en) * | 2022-06-07 | 2022-10-21 | 采埃孚合力传动技术(合肥)有限公司 | Electric forklift driving system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3388705A1 (en) * | 2017-04-11 | 2018-10-17 | Kabushiki Kaisha Toyota Jidoshokki | Wet brake |
| CN108061149A (en) * | 2017-12-17 | 2018-05-22 | 安徽合力股份有限公司 | The mounting structure of taper roll bearing at a kind of electri forklift output axle shaft |
| CN112324491A (en) * | 2020-10-11 | 2021-02-05 | 中国煤炭科工集团太原研究院有限公司 | Split type storage battery chute carrier capable of being disassembled rapidly to enter and exit cage |
| CN115215265A (en) * | 2022-06-07 | 2022-10-21 | 采埃孚合力传动技术(合肥)有限公司 | Electric forklift driving system |
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