CN104728407A - Electric fork-lift truck, axle box and axle arm installing structure - Google Patents
Electric fork-lift truck, axle box and axle arm installing structure Download PDFInfo
- Publication number
- CN104728407A CN104728407A CN201510132938.3A CN201510132938A CN104728407A CN 104728407 A CN104728407 A CN 104728407A CN 201510132938 A CN201510132938 A CN 201510132938A CN 104728407 A CN104728407 A CN 104728407A
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- Prior art keywords
- gear
- axis
- bridge arm
- vehicle bridge
- arm
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/025—Support of gearboxes, e.g. torque arms, or attachment to other devices
Abstract
The invention discloses an electric fork-lift truck, an axle box and an axle arm installing structure. The axle box comprises a middle box body, a reduction gearbox cover, a first axle arm, a differential box cover and a second axle arm, brakes are installed on the first axle arm and the second axle arm respectively, jack shafts are installed in the first axle arm and the second axle arm respectively, the two jack shafts are connected through a differential mechanism assembly, the differential mechanism assembly is connected with a motor in a transmission mode through a duplicate gear shaft, a second gear, a first gear and an input gear, the reduction gearbox cover is in interference fit with the first axel arm, the reduction gearbox cover is fixedly connected with the first axel arm through location pins, fastening pieces or welding, the differential box cover is in interference fit with the second axel arm, and the differential box cover is fixedly connected with the second axel arm through location pins, fastening pieces or welding. The electric fork-lift truck, the axle box and the axle arm installing structure have the advantages that the connection is reliable, the fastening is firm, no sealing piece is needed, the connection reliability, the supporting intensity and the motion stability are improved, the service life is prolonged, and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of electri forklift, bridge case and vehicle bridge arm mounting structure thereof.
Background technique
Electric vehicle due to noiseless, be not vented, overhaul simple, processing ease and hauling ability is superior and be widely used, but because electric vehicle needs a lot of power supply to provide energy, thus electric vehicle is relative to fuel combustion vehicle, and the space utilization of vehicle is very crucial.The driving system of electric vehicle comprises vehicle bridge, wheel, vehicle frame and suspension, drive motor via speed reducer, ransaxle by transmission of power to wheel.
Publication number is the bridge box assembly that patent document discloses a kind of Electric Fork Lift Trucks of CN202944154, and it is by parallel with ransaxle for drive motor placement and by speed changer by power transmission, save space, makes overall more compact structure, layout more reasonable; Adopt the adjustable connection of dunnage simultaneously, be convenient to the assembling of fork truck overall processing, change traditional jaw type assembling mode into fan-shaped connection, solve the stuck phenomenon because the bad photograph of machining accuracy becomes.But the repetition test be through in recent years and actual use feedback, inventor thinks that above-mentioned bridge case is still needed on the working life and manufacture cost of space layout, support strength, transmission stability, component and improves further.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of electri forklift, bridge case and vehicle bridge arm mounting structure thereof, this vehicle bridge arm mounting structure, easy for installation, firm and reliable connection.
To achieve the above object, present invention employs following technological scheme:
The vehicle bridge arm mounting structure of bridge case, this bridge case comprises middle housing, gear box cover is fixed in the side of middle housing, first vehicle bridge arm is fixed on gear box cover, the opposite side of middle housing fixes differential case lid, second vehicle bridge arm is fixed on differential box and covers, on second vehicle bridge arm, the first dunnage fixed by suit, first vehicle bridge arm and the second vehicle bridge arm install break respectively, respectively jack shaft is installed in first vehicle bridge arm and the second vehicle bridge arm, two jack shafts are connected by differential assembly, differential assembly passes through double crosslinking gear shaft, second gear, first gear is connected with motor-driven with input gear, input gear is connected with motor output shaft, input gear and the first meshed transmission gear, first gear and the second gear are arranged on same transmission shaft, gearwheel engagement driving on second gear and double crosslinking gear shaft, the external gear engagement driving of the small gear on double crosslinking gear shaft and differential assembly, it is characterized in that, gear box cover is with the first vehicle bridge arm interference fit and be connected by locating stud, fastening piece or be welded and fixed, and differential case lid is with the second vehicle bridge arm interference fit and be connected by locating stud, fastening piece or be welded and fixed.
As preferably, gear box cover is with the first vehicle bridge arm interference fit and be fixedly connected with by plug welding, and differential case lid is with the second vehicle bridge arm interference fit and be fixedly connected with by plug welding.
For the bridge case of electri forklift, comprise vehicle bridge arm mounting structure as above.
A kind of electri forklift, comprises bridge case as above.
The present invention, owing to have employed above technological scheme, connects reliable, fixation, without the need to Sealing, improves connection reliability, support strength and stability of motions, improve working life, reduce manufacture cost.
Accompanying drawing explanation
Fig. 1 is one of stereogram of embodiment's Bridge 1 case;
Fig. 2 is the stereogram two of embodiment's Bridge 1 case;
Fig. 3 is the outline drawing of embodiment's Bridge 1 case;
Fig. 4 is the left view (omitting left hand brake device) of Fig. 3;
Fig. 5 is the right elevation (omission right hand brake) of Fig. 3;
Fig. 6 is one of stereogram of embodiment 1 gear box cover;
Fig. 7 is the stereogram two of embodiment 1 gear box cover;
Fig. 8 is one of stereogram of embodiment 1 middle housing;
Fig. 9 is the stereogram two of embodiment 1 middle housing;
Figure 10 is the stereogram of embodiment 1 dunnage;
Figure 11 is one of stereogram of drive mechanism of the present invention;
Figure 12 is the stereogram two (band middle housing) of drive mechanism of the present invention;
Figure 13 is the stereogram three (band middle housing) of drive mechanism of the present invention;
Figure 14 is the stereogram of embodiment's Bridge 2 case;
Figure 15 is the side view of embodiment's Bridge 2 case;
Figure 16 is the structural representation of a kind of Placement of gear box cover and its vehicle bridge arm;
Figure 17 is the structural representation of a kind of Placement of differential case lid and its vehicle bridge arm;
Figure 18 is the structural representation of the another kind of Placement of gear box cover and its vehicle bridge arm;
Figure 19 is the structural representation of the another kind of Placement of differential case lid and its vehicle bridge arm.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, the present invention and simplified characterization for convenience of description, with shown in Fig. 3 define " on ", D score, "left", "right", wherein, " on " be the top of product shown in Fig. 3, D score is the below of product shown in Fig. 3, and " left side " is the left of product shown in Fig. 3, " right side " is the right of product shown in Fig. 3, outwards and is inwardly divided into " front " " afterwards " with paper vertical in Fig. 3.Other terms as " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more, unless otherwise clear and definite restriction.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
The first mode of execution of bridge case of the present invention:
As Fig. 1, a kind of bridge case for electri forklift shown in Fig. 2 and Figure 11-13, comprise middle housing 4, gear box cover 5 is fixed in the side of middle housing 4, first vehicle bridge arm 11 is fixed on gear box cover 5, the opposite side of middle housing 4 fixes differential case lid 2, second vehicle bridge arm 12 is fixed on differential case lid 2, on second vehicle bridge arm 12, the first dunnage 3 fixed by suit, first vehicle bridge arm 11 and the second vehicle bridge arm 12 install break 1 respectively, first dunnage 3 is between differential case lid 2 and break 1, in first vehicle bridge arm 11 and the second vehicle bridge arm 12, jack shaft 6 is installed respectively, two jack shafts 6 are connected by differential assembly 10, differential assembly 10 is by double crosslinking gear shaft 9, second gear 802, first gear 801 is connected with motor-driven with input gear 701, input gear 701 is fixed on connecting sleeve 7, connecting sleeve 7 and motor output shaft spline joint, input gear 701 and the first gear 801 engagement driving, first gear 801 is fixedly connected with the second gear 802 and is arranged on by bearing on same transmission shaft 8, second gear 802 and gearwheel 901 engagement driving on double crosslinking gear shaft 9, small gear 902 on double crosslinking gear shaft 9 and the external gear engagement driving of differential assembly 10.Said gear transmission is angular gear transmission.
A kind of electri forklift, comprise bridge case as above, gear box cover 5 is provided with the second annular mounting groove 514 and multiple attachment post 501,502,503,504, first dunnage 3 is provided with the first annular mounting groove 306 and multiple attachment hole 301,302,303,304, and this bridge case is connected with forklift frame with attachment hole 301,302,303,304 by the first annular mounting groove 306, second annular mounting groove 514, attachment post 501,502,503,504.
Bridge case as shown in Figure 3, the exterior edge face of multiple attachment post 501,502,503,504 is all in same plane A, the exterior edge face of multiple attachment hole 301,302,303,304 is all in same plane B, and this plane A and plane B are with the axes normal of described jack shaft and with forklift frame front-rear center line II apart from identical; The spacing of plane A and plane B is a, then, the spacing b of the exterior edge face of the first annular mounting groove 306 and the exterior edge face of the second annular mounting groove 514 is 70% ~ 100%a, and the exterior edge face of the exterior edge face of the first annular mounting groove 306 and the second annular mounting groove 514 with forklift frame front-rear center line II apart from identical, the base diameter c1 of the first annular mounting groove 306 and the second annular mounting groove 514 is 15% ~ 25%a, and the width c2 of the first annular mounting groove 306 and the second annular mounting groove 514 is 3% ~ 8%a.
The mounting structure of bridge case: as Fig. 4, shown in Fig. 5, multiple attachment post 501, 502, 503, the axis of the respective mounting hole on 504, and the multiple attachment holes 301 in dunnage 3, 302, 303, each axis of 304, all between the axis and the axis of jack shaft 6 of transmission shaft 8, the axis of transmission shaft 8 and the axis being parallel of jack shaft 6 and both are arranged in same plane C, the spacing d of the axis of transmission shaft 8 and the axis of jack shaft 6 is 38% ~ 53%a, with this plane C for horizontal plane, then, in dunnage 3 as shown in Figure 4: the first attachment hole 301 and the second attachment hole 302 are positioned at the top of plane C, the horizontal equivalent f1 of the axis of the first attachment hole 301 and the axis of jack shaft 6 is 15% ~ 25%d, the axis of the first attachment hole 301 and the perpendicular distance f2 of plane C are 75% ~ 85%d, the horizontal equivalent g1 of the axis of the second attachment hole 302 and the axis of jack shaft 6 is 40% ~ 50%d, the axis of the second attachment hole 302 and the perpendicular distance g2 of plane C are 65% ~ 75%d, 3rd attachment hole 303 and the 4th attachment hole 304 are positioned at the below of plane C, the horizontal equivalent h1 of the axis of the 3rd attachment hole 303 and the axis of jack shaft 6 is 75% ~ 85%d, the axis of the 3rd attachment hole 303 and the perpendicular distance h2 of plane C are 15% ~ 25%d, the horizontal equivalent i1 of the axis of the 4th attachment hole 304 and the axis of jack shaft 6 is 65% ~ 75%d, and the axis of the 4th attachment hole 304 and the perpendicular distance i2 of plane C are 40% ~ 50%d.As shown in Figure 5, first attachment post 501, second attachment post 502 and the 3rd attachment post 503 are positioned at the top of plane C, the horizontal equivalent k1 of the mounting hole axis of the first attachment post 501 and the axis of jack shaft 6 is 30% ~ 40%d, the mounting hole axis of the first attachment post 501 and the perpendicular distance k2 of plane C are 75% ~ 85%d, the horizontal equivalent m1 of the mounting hole axis of the second attachment post 502 and the axis of jack shaft 6 is 55% ~ 65%d, the mounting hole axis of the second attachment post 502 and the perpendicular distance m2 of plane C are 50% ~ 60%d, the horizontal equivalent n1 of the mounting hole axis of the 3rd attachment post 503 and the axis of jack shaft 6 is 70% ~ 80%d, the mounting hole axis of the 3rd attachment post 503 and the perpendicular distance n2 of plane C are 15% ~ 25%d, 4th attachment post 504 is positioned at the below of plane C, and the horizontal equivalent p1 of the mounting hole axis of the 4th attachment post 504 and the axis of jack shaft 6 is 75% ~ 85%d, and the mounting hole axis of the 4th attachment post 504 and the perpendicular distance p2 of plane C are 30% ~ 40%d.Compared to prior art, above-mentioned installation cooperation structure is more reasonable, not only make not easily to loosen and uniform force through attachment post and the attachment hole connecting bolt for clevis vehicle carriage and bridge case, thus make the connection of forklift frame and bridge case reliable, supporting & stablizing, the working life of connecting bolt also improves, and in fork truck work movement process, the active force be passed on bridge case and even wheel by the annular mounting groove of attaching plate elements and cooperation thereof is more uniform and stable, thus make the wearing and tearing of each component binding site reduce to minimum, improve the working life of bridge case and even car body.
The drive mechanism of bridge case: as shown in Figure 4, the axis of input gear 701 is positioned at the back upper place of the axis of jack shaft 6, the horizontal equivalent e1 of the axis of input gear 701 and the axis of jack shaft 6 is 100% ~ 110%d, and the axis of input gear 701 and the perpendicular distance e2 of plane C are 40% ~ 50%d; As shown in Figure 5, the axis of double crosslinking gear shaft 9 is between the axis and the axis of jack shaft 6 of transmission shaft 8 and be positioned at the below of plane C, the horizontal equivalent j1 of the axis of double crosslinking gear shaft 9 and the axis of jack shaft 6 is 45% ~ 55%d, and the axis of double crosslinking gear shaft 9 and the perpendicular distance j2 of plane C are 5% ~ 15%d.Compared to prior art, said gear cooperating structure is more reasonable, and not only driving torque is reliable and stable, and each strength of gear is even, and convenient installation, lubrication is good, substantially increases the working life of drive mechanism component in bridge case.By simulating the fatigue test of actual service condition, the working life of bridge case improves about 20% compared to prior art.
The gear box cover 5 of bridge case, as shown in Figure 6, Figure 7, gear box cover 5 be provided with axis hole A507 for installing jack shaft 6, for install double crosslinking gear shaft 9 axis hole B509, for installing the axis hole C511 of the transmission shaft 8 and axis hole D512 for installing connecting sleeve 7, wherein, axis hole A507 and axis hole C511 is through hole, and axis hole B509 and axis hole D512 is blind hole.The inner side of gear box cover 5 is the connecting wall 505 engaged with middle housing 4, this connecting wall 505 for arranging jack shaft 6, gearwheel 901, second gear 802, first gear 801 of double crosslinking gear shaft 9 and the groove A of input gear 701, comprising the chamber holding input gear 701, the chamber 510 holding the first gear 801 around formation, holding the chamber 508 of gearwheel 901 and holding the chamber 506 of jack shaft 6.Arranged outside first attachment post 501, second attachment post 502 of gear box cover 5, the 3rd attachment post 503, the 4th attachment post 504 and the link arm 513 be enclosed within outside jack shaft 6, described second annular mounting groove 514 is arranged on the periphery of this link arm 513, and the outside of this link arm 513 is fixedly connected with the first vehicle bridge arm 11.Same, for the axis of installing the axis hole C511 of transmission shaft 8 with for installing the axis being parallel of the axis hole A507 of jack shaft 6 and both are arranged in same plane C, the spacing d of this two axial lines is 38% ~ 53%a, with this plane C for horizontal plane, then, the axis of axis hole D512 is positioned at the back upper place of the axis of axis hole A507, and the horizontal equivalent e1 of the axis of axis hole D512 and the axis of axis hole A507 is 100% ~ 110%d, and the axis of axis hole D512 and the perpendicular distance e2 of plane C are 40% ~ 50%d; The axis of axis hole B509 is between the axis and the axis of axis hole A507 of axis hole C511 and be positioned at the below of plane C, the horizontal equivalent j1 of the axis of axis hole B509 and the axis of axis hole A507 is 45% ~ 55%d, and the axis of axis hole B509 and the perpendicular distance j2 of plane C are 5% ~ 15%d.
The middle housing 4 of bridge case, as shown in Figure 8, Figure 9, middle housing 4 be provided with axis hole E413 for wearing jack shaft 6, for wear double crosslinking gear shaft 9 intercommunicating pore 411, for installing the axis hole F409 of the transmission shaft 8 and axis hole G407 for installing connecting sleeve 7, wherein, axis hole E413, axis hole F409 and axis hole G407 are through hole; The side of middle housing 4 is the deceleration side connecting wall 405 engaged with gear box cover 5, this deceleration side connecting wall 405 is around the groove B formed for arranging one end of jack shaft 6, the gearwheel 901 of double crosslinking gear shaft 9 and the second gear 802, groove B comprises the chamber 408 of accommodation second gear 802, the chamber 410 of accommodation gearwheel 901 and holds the chamber 412 of jack shaft 6 one end, and axis hole G407 wall protrudes from groove B thus be formed with circular groove 406 between axis hole G407 wall and deceleration side connecting wall 405; The opposite side of middle housing 4 is the differential side connecting wall 414 engaged with differential case lid 2, and this differential side connecting wall 414 comprises the chamber 416 holding differential assembly 10 around the groove C formed for arranging differential assembly 10 and small gear 902, groove C; Dividing plate 404 is provided with between described groove B and groove C, axis hole E413 is arranged on dividing plate 404, axis hole E413 and intercommunicating pore 411 through groove B and groove C, the part of dividing plate 404 between axis hole E413 and intercommunicating pore 411 forms arc bridge portion, dividing plate 404 is formed with multiple stiffening rib in groove B side, and dividing plate 404 is formed with multiple depression in groove C side.Middle housing 4 is the assembly wall 417 of mounted motor and transmission shaft 8 at the rear of differential side connecting wall 414, and for increasing the stiffening rib 415 of middle housing semi-finals degree.Same, for the axis of installing the axis hole F409 of transmission shaft 8 with for installing the axis being parallel of the axis hole E413 of jack shaft 6 and both are arranged in same plane C, the spacing d of this two axial lines is 38% ~ 53%a, with this plane C for horizontal plane, then, the axis of axis hole G407 is positioned at the back upper place of the axis of axis hole E413, and the horizontal equivalent e1 of the axis of axis hole G407 and the axis of axis hole E413 is 100% ~ 110%d, and the axis of axis hole G407 and the perpendicular distance e2 of plane C are 40% ~ 50%d; The upper end of intercommunicating pore 411 is positioned at the top of plane C, and the lower end of intercommunicating pore 411 is positioned at the below of plane C.
First dunnage 3 of bridge case, as shown in Figure 10, first dunnage 3 comprises for being sleeved on the sleeve part on the second vehicle bridge arm 12 and the plate portion for clevis vehicle carriage, sleeve part has endoporus 307, sleeve part periphery is arranged described first annular mounting groove 306, plate portion is formed with enhancing bending, plate portion is arranged described first attachment hole 301, second attachment hole 302, the 3rd attachment hole 303 and the 4th attachment hole 304, plate portion forms the breach 305 for dodging motor between the second attachment hole 302 and the 3rd attachment hole 303, to facilitate mounted motor; Plate portion has threading hole 308, the braking string being convenient to break is passed.
The lubricating structure of bridge case, as shown in Figure 1, Figure 3, is provided with pouring orifice at the top of middle housing 4, pouring orifice is clogged by breather plug 401, and the front portion of middle housing 4 is provided with oil spilling mouth, and oil spilling mouth is closed by blocking A402, the bottom of middle housing 4 is provided with fuel outlet, and fuel outlet is closed by blocking B403; When the plane C at the axis of transmission shaft 8 and the axis place of jack shaft 6 is level, bridge case is arranged on plane C almost horizontal on fork truck, and the lubricant oil liquid level in bridge case is higher than this plane C and lower than the upper end of intercommunicating pore 411.Like this, well can not only lubricate differential assembly and each gear and bearing thereof, and the connecting sleeve be connected with motor does not need to seal yet, deceleration space and the air in differential mechanism space also can be communicated with via intercommunicating pore and discharge from the breather plug of pouring orifice.As preferably, described pouring orifice is positioned at the top of differential assembly 10, and fuel outlet is positioned at the below of differential assembly 10, and oil spilling mouth is positioned at the front of differential assembly 10, and described pouring orifice, fuel outlet are communicated with the groove B of the equal middle housing 4 of oil spilling mouth.In above-mentioned bridge case, outer end and the vehicle bridge arm of jack shaft are sealed by Sealing.
The first mode of execution of above-mentioned bridge case, is mainly applicable to little tonnage fork car, adopts and is connected with forklift frame at the multiple attachment post of gear box cover arranged outside, easy for installation, saves material.But, for large-tonnage fork truck, its ransaxle is longer, in order to obtain good bearing performance, need by the spacing a of above-mentioned plane A and plane B increase and the position of gear box cover time constant, such attachment post is the insufficient strength because length is oversize easily, therefore, can adopt the second mode of execution:
As shown in figure 14, in arranged outside second dunnage 51 of gear box cover 5, second dunnage 51 comprises for being sleeved on the sleeve part on the first vehicle bridge arm 11 and the plate portion for clevis vehicle carriage, sleeve part periphery is arranged described second annular mounting groove, plate portion is formed with enhancing bending, plate portion is arranged described 5th attachment hole 5101, 6th attachment hole 5102, 7th attachment hole 5103 and the 8th attachment hole 5104, plate portion is provided with the 9th attachment hole 5105 between the 5th attachment hole 5101 and the 6th attachment hole 5102, second dunnage 51 is fixedly connected with gear box cover 5 by the connecting bolt through the 9th attachment hole 5105.Wherein, the axis of transmission shaft 8 and the axis being parallel of jack shaft 6 and both are arranged in same plane C, the spacing d of the axis of transmission shaft 8 and the axis of jack shaft 6 is 38% ~ 53%a, with this plane C for horizontal plane, then, as shown in figure 15, 5th attachment hole 5101, 6th attachment hole 5102 and the 7th attachment hole 5103 are positioned at the top of plane C, the horizontal equivalent q1 of the axis of the 5th attachment hole 5101 and the axis of jack shaft 6 is 25% ~ 35%d, the axis of the 5th attachment hole 5101 and the perpendicular distance q2 of plane C are 75% ~ 85%d, the horizontal equivalent r1 of the axis of the 6th attachment hole 5102 and the axis of jack shaft 6 is 65% ~ 75%d, the axis of the 6th attachment hole 5102 and the perpendicular distance r2 of plane C are 45% ~ 55%d, the horizontal equivalent t1 of the axis of the 7th attachment hole 5103 and the axis of jack shaft 6 is 75% ~ 85%d, the axis of the 7th attachment hole 5103 and the perpendicular distance t2 of plane C are 20% ~ 30%d, 8th attachment hole 5104 is positioned at the below of plane C, and the horizontal equivalent x1 of the axis of the 8th attachment hole 5104 and the axis of jack shaft 6 is 75% ~ 85%d, and the axis of the 8th attachment hole 5104 and the perpendicular distance x2 of plane C are 5% ~ 15%d.9th attachment hole 5105 is positioned at the top of plane C, and the horizontal equivalent s1 of the axis of the 9th attachment hole 5105 and the axis of jack shaft 6 is 45% ~ 55%d, and the axis of the 9th attachment hole 5105 and the perpendicular distance s2 of plane C are 60% ~ 70%d.
Here it should be noted that, in above-mentioned second dunnage, each attachment hole position and publication number are
Disclosed in the patent documentation of CN202944154U, the attachment hole position of dunnage is close, but, attachment hole position in two dunnages in patent structure is before all the same, inventor finds that the degree of wear of two dunnages and connected element thereof differs greatly in testing property and actual use, for this reason, inventor is to the structural distribution of above-mentioned bridge case and install and use situation and carried out comprehensive and systematic analysis and test, adopt the optimized design that two dunnage differentiation are arranged, thus make the uniform force of each connected element of the present invention, connect reliable, supporting & stablizing, in fork truck work movement process, the active force be passed on bridge case and even wheel by the annular mounting groove of attaching plate elements and cooperation thereof is more uniform and stable, thus make the wearing and tearing of each component binding site reduce to minimum, improve each connected element, the working life of bridge case and car body.By simulating the fatigue test of actual service condition, the working life of bridge case improves about 20% compared to prior art.
The vehicle bridge arm mounting structure of bridge case, preferred following several mode of execution:
One is connected by connecting bolt, and as shown in figure 16, gear box cover 5 and the first vehicle bridge arm 11 are connected and fixed by 8 M16 bolt threads, and as shown in figure 17, differential case lid 2 and the second vehicle bridge arm 12 are connected and fixed by 8 M16 bolt threads.
Two is connect without key, vehicle bridge arm and case lid interference fit, vehicle bridge arm press-in load is more than 1 ton, in order to ensure connection reliability further, can adopt locating stud, the mode of Cock screw or welding is fixedly connected with further, as shown in figure 18, gear box cover 5 is with the first vehicle bridge arm 11 interference fit and be fixedly connected with by plug welding 13, as shown in figure 19, differential case lid 2 is fixedly connected with by plug welding 13 with the second vehicle bridge arm 12 interference fit.Such connection is reliable, fixation, without the need to sealing.
The mode of execution of above-mentioned two bridge casees is a motor left side and puts mode, also can be changed into the motor right side and put mode, only bridge box structure need be carried out mirror image conversion designs.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (4)
1. the vehicle bridge arm mounting structure of bridge case, this bridge case comprises middle housing (4), gear box cover (5) is fixed in the side of middle housing (4), first vehicle bridge arm (11) is fixed on gear box cover (5), the opposite side of middle housing (4) fixes differential case lid (2), second vehicle bridge arm (12) is fixed on differential case lid (2), the first dunnage (3) fixed by the upper suit of second vehicle bridge arm (12), first vehicle bridge arm (11) and the second vehicle bridge arm (12) install break (1) respectively, in first vehicle bridge arm (11) and the second vehicle bridge arm (12), jack shaft (6) is installed respectively, two jack shafts (6) are connected by differential assembly (10), differential assembly (10) is by double crosslinking gear shaft (9), second gear (802), first gear (801) is connected with motor-driven with input gear (701), input gear (701) is connected with motor output shaft, input gear (701) and the first gear (801) engagement driving, first gear (801) and the second gear (802) are arranged on same transmission shaft (8), second gear (802) and gearwheel (901) engagement driving on double crosslinking gear shaft (9), the external gear engagement driving of the small gear (902) on double crosslinking gear shaft (9) and differential assembly (10), it is characterized in that, gear box cover (5) is with the first vehicle bridge arm (11) interference fit and be connected by locating stud, fastening piece or be welded and fixed, and differential case lid (2) is with the second vehicle bridge arm (12) interference fit and be connected by locating stud, fastening piece or be welded and fixed.
2. the vehicle bridge arm mounting structure of bridge case according to claim 1, it is characterized in that, gear box cover (5) is with the first vehicle bridge arm (11) interference fit and be fixedly connected with by plug welding, and differential case lid (2) is with the second vehicle bridge arm (12) interference fit and be fixedly connected with by plug welding.
3. for the bridge case of electri forklift, it is characterized in that, comprise vehicle bridge arm mounting structure as claimed in claim 1 or 2.
4. an electri forklift, is characterized in that, comprises bridge case as claimed in claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132938.3A CN104728407B (en) | 2015-03-25 | 2015-03-25 | Electri forklift, bridge case and its axle arm mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132938.3A CN104728407B (en) | 2015-03-25 | 2015-03-25 | Electri forklift, bridge case and its axle arm mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104728407A true CN104728407A (en) | 2015-06-24 |
| CN104728407B CN104728407B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510132938.3A Active CN104728407B (en) | 2015-03-25 | 2015-03-25 | Electri forklift, bridge case and its axle arm mounting structure |
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| JP2001141040A (en) * | 1999-11-12 | 2001-05-25 | Isuzu Motors Ltd | Lubricating structure of differential gear box |
| EP1245424A2 (en) * | 2001-03-26 | 2002-10-02 | Kanzaki Kokyukoki MFG. Co., Ltd. | Transmission arrangement with PTO shaft for a working vehicle |
| CN201599364U (en) * | 2009-12-29 | 2010-10-06 | 绍兴前进齿轮箱有限公司 | Reduction gearbox used for electric forklift truck |
| CN201613819U (en) * | 2010-03-19 | 2010-10-27 | 薛建南 | Speed reduction and differential integrated rear axle assembly of electric vehicle |
| CN103434390A (en) * | 2013-08-29 | 2013-12-11 | 安徽合力股份有限公司 | Transmission system of alternating-current storage-battery electric forklift truck |
| CN204573044U (en) * | 2015-03-25 | 2015-08-19 | 绍兴金道齿轮箱有限公司 | Electri forklift, bridge case and vehicle bridge arm mounting structure thereof |
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2015
- 2015-03-25 CN CN201510132938.3A patent/CN104728407B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001141040A (en) * | 1999-11-12 | 2001-05-25 | Isuzu Motors Ltd | Lubricating structure of differential gear box |
| EP1245424A2 (en) * | 2001-03-26 | 2002-10-02 | Kanzaki Kokyukoki MFG. Co., Ltd. | Transmission arrangement with PTO shaft for a working vehicle |
| CN201599364U (en) * | 2009-12-29 | 2010-10-06 | 绍兴前进齿轮箱有限公司 | Reduction gearbox used for electric forklift truck |
| CN201613819U (en) * | 2010-03-19 | 2010-10-27 | 薛建南 | Speed reduction and differential integrated rear axle assembly of electric vehicle |
| CN103434390A (en) * | 2013-08-29 | 2013-12-11 | 安徽合力股份有限公司 | Transmission system of alternating-current storage-battery electric forklift truck |
| CN204573044U (en) * | 2015-03-25 | 2015-08-19 | 绍兴金道齿轮箱有限公司 | Electri forklift, bridge case and vehicle bridge arm mounting structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104728407B (en) | 2017-11-07 |
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Address after: 312000 Zhongxing Avenue 22, Zhejiang City, Shaoxing province. Patentee after: Zhejiang Golden Road Polytron Technologies Inc Address before: 312000 Zhongxing Avenue 22, Shaoxing, Zhejiang. Patentee before: SHAOXING JINDAO GEAR BOX CO., LTD. |
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Address after: 312000 no.689, Bujin Road, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: ZHEJIANG JINDAO TECHNOLOGY Co.,Ltd. Address before: 312000 Zhongxing Avenue 22, Zhejiang City, Shaoxing province. Patentee before: ZHEJIANG JINDAO TECHNOLOGY Co.,Ltd. |