CN104742650B - Electric forklift and axle box thereof - Google Patents
Electric forklift and axle box thereof Download PDFInfo
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- CN104742650B CN104742650B CN201510132988.1A CN201510132988A CN104742650B CN 104742650 B CN104742650 B CN 104742650B CN 201510132988 A CN201510132988 A CN 201510132988A CN 104742650 B CN104742650 B CN 104742650B
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Abstract
The invention discloses an electric forklift and an axle box thereof. 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. The second axle arm is sleeved with and fixedly provided with a first supporting plate, the reduction gearbox cover is provided with a second annular installation groove and a plurality of connection columns, the first supporting plate is provided with a first annular installation groove and a plurality of connection holes, and the axle box is connected with a forklift frame through the first annular installation groove, the second annular installation groove, the connection columns and the connection holes. Connection reliability, supporting strength and movement stability of the axle box and the forklift frame are improved by limiting specific positions of connection column installation holes and the connection holes, distances between the connection column installation holes and the connection holes and installation and matching relations, the axle box is suitable for installation of the electric forklift, service life is prolonged, and manufacturing cost is lowered.
Description
Technical field
The present invention relates to a kind of electri forklift and its bridge case.
Background technology
Electric vehicle is because noiseless, not aerofluxuss, maintenance are simple, processing ease and hauling ability are superior and extensively transported
With, but because electric vehicle needs a lot of power supplys to provide energy, thus electric vehicle is for fuel combustion vehicle, vehicle
Space utilization is non-the normally off key.The driving system of electric vehicle includes vehicle bridge, wheel, vehicle frame and suspension, motor via
Power is transferred to wheel by reduction box, drive axle.
The patent documentation of Publication No. cn202944154 discloses a kind of bridge box assembly of battery fork lift truck, and it will drive electricity
Machine is placed in parallel with drive axle and is transmitted power by variator, saves space so that the more compact structure of entirety, layout
More reasonable；Adopt gripper shoe scalable to connect simultaneously, be easy to the assembling of fork truck overall processing, traditional jaw type assembling mode is changed to
Fan-shaped connection, solves the stuck phenomenon shone because machining accuracy is bad.But through repetition test in recent years and reality
Border uses feedback, inventor think above-mentioned bridge case space layout, support strength, transmission stability, parts use
Still need in life-span Manufacturing cost and improve further.
Content of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of electri forklift and its bridge case, this bridge case
On the basis of existing technology, the mounting structure of bridge case is optimized, suitable electri forklift is installed, improve connection reliability,
Support strength and kinetic stability, improve service life, reduce manufacturing cost.
To achieve the above object, present invention employs following technical scheme:
For the bridge case of electri forklift, including middle housing, gear box cover, the first axle arm are fixed in the side of middle housing
It is fixed on gear box cover, the opposite side of middle housing fixes differential case lid, and the second axle arm is fixed on differential box lid, second
On axle arm, the first gripper shoe fixed by suit, the first axle arm and the second axle arm is respectively mounted brake, the first gripper shoe
Between differential case lid and brake, in the first axle arm and the second axle arm, it is respectively mounted jack shaft, two jack shafts
Connected by differential assembly, differential assembly passes through double crosslinking gear shaft, second gear, first gear and input gear and motor
It is in transmission connection；It is characterized in that, the second annular mounting groove and multiple connecting post are provided with gear box cover, the first gripper shoe sets
Have first annular mounting groove and multiple connecting hole, this bridge case by first annular mounting groove, the second annular mounting groove, connecting post and
Connecting hole is connected with forklift frame；The described outer face of multiple connecting posts and the spacing of the described outer face of multiple connecting holes
For a, then, spacing b of the outer face of the outer face of first annular mounting groove and the second annular mounting groove is 70%～100%a, the
The base diameter of one annular mounting groove and the second annular mounting groove is 15%～25%a, first annular mounting groove and the second ring
The width of shape mounting groove is 3%～8%a；The axis of the respective installing hole in described multiple connecting posts, and in gripper shoe
Multiple connecting holes each axis, be respectively positioned between axis and the axis of jack shaft of the power transmission shaft of first gear, power transmission shaft
The diameter parallel of axis and jack shaft and both be generally aligned in the same plane in c, the axis of power transmission shaft and the axle of jack shaft
Spacing d of line is 38%～53%a, with this plane c as horizontal plane, then, in the multiple connecting holes in the first gripper shoe: first even
Connect hole and the second connecting hole is located at the top of plane c, the axis of the first connecting hole with the horizontal range of the axis of jack shaft is
15%～25%d, the axis of the first connecting hole and the vertical dimension of plane c are 75%～85%d, the axis of the second connecting hole with
The horizontal range of the axis of jack shaft is 40%～50%d, and the axis of the second connecting hole and the vertical dimension of plane c are 65%
～75%d；3rd connecting hole and the 4th connecting hole are positioned at the lower section of plane c, the axis of the 3rd connecting hole and the axle of jack shaft
The horizontal range of line is 75%～85%d, and the axis of the 3rd connecting hole and the vertical dimension of plane c are 15%～25%d, the 4th
The horizontal range of the axis of connecting hole and the axis of jack shaft is 65%～75%d, the axis of the 4th connecting hole and plane c
Vertical dimension is 40%～50%d；Then, in the multiple connecting posts on gear box cover: the first connecting post, the second connecting post and the 3rd
Connecting post is located at the top of plane c, and the axially bored line of installing of the first connecting post is 30% with the horizontal range of the axis of jack shaft
～40%d, the axially bored line of installing of the first connecting post is 75%～85%d with the vertical dimension of plane c, the installation of the second connecting post
Axially bored line is 55%～65%d with the horizontal range of the axis of jack shaft, installation axially bored line and plane c of the second connecting post
Vertical dimension is 50%～60%d, and the axially bored line of installing of the 3rd connecting post is 70% with the horizontal range of the axis of jack shaft
～80%d, the axially bored line of installing of the 3rd connecting post is 15%～25%d with the vertical dimension of plane c；4th connecting post is located at flat
The lower section of face c, the axially bored line of installing of the 4th connecting post is 75%～85%d with the horizontal range of the axis of jack shaft, the 4th
The axially bored line of installing of connecting post is 30%～40%d with the vertical dimension of plane c.
Preferably, the axis of described input gear is located at the back upper place of the axis of jack shaft, the axis of input gear
Horizontal range with the axis of jack shaft is 100%～110%d, and the axis of input gear with the vertical dimension of plane c is
40%～50%d.
Preferably, the axis of described double crosslinking gear shaft be located between the axis of power transmission shaft and the axis of jack shaft and
Positioned at the lower section of plane c, the axis of double crosslinking gear shaft is 45%～55%d with the horizontal range of the axis of jack shaft, duplex
The axis of gear shaft and the vertical dimension of plane c are 5%～15%d.
Preferably, described gear box cover be provided with for jack shaft is installed axis hole a, be used for double crosslinking gear shaft is installed
Axis hole b, for installing the axis hole c of power transmission shaft and for installing the axis hole d of adapter sleeve；The inner side of gear box cover is and intermediate box
Body engage connection wall, this connection wall around formed for arrange jack shaft, the gear wheel of double crosslinking gear shaft, second gear,
The groove a of first gear and input gear；The outside of gear box cover arrange the first connecting post, the second connecting post, the 3rd connecting post,
4th connecting post and be enclosed within linking arm outside jack shaft, described second annular mounting groove is arranged on the periphery of this linking arm
On, the outside of this linking arm is fixedly connected with the first axle arm.
Preferably, described middle housing be provided with for wear jack shaft axis hole e, be used for wearing double crosslinking gear shaft
Intercommunicating pore, for installing the axis hole f of power transmission shaft and for installing the axis hole g of adapter sleeve, wherein, axis hole e, axis hole f and axis hole g
It is through hole；The side of middle housing is the deceleration side connection wall engaging with gear box cover, and this deceleration side connection wall is around formation
For arranging the groove b of one end of jack shaft, the gear wheel of double crosslinking gear shaft and second gear；The opposite side of middle housing is
The differential side connection wall engaging with differential case lid, this differential side connection wall is used for arranging differential assembly and little gear around formation
Groove c；It is provided with dividing plate, axis hole e is arranged on dividing plate, axis hole e and intercommunicating pore insertion groove b between described groove b and groove c
With groove c, part formation arc bridge portion between axis hole e and intercommunicating pore for the dividing plate.
Further preferably, described dividing plate is formed with multiple reinforcements in groove b side, and dividing plate is formed with groove c side
Multiple depressions.
Further preferably, described middle housing is the installation installing motor and power transmission shaft at the rear of differential side connection wall
Wall, and for increasing the reinforcement of middle housing intensity.
Preferably, described first gripper shoe includes the sleeve part for being sleeved on the second axle arm and pitches for connecting
The plate portion of vehicle carriage, sleeve part has endoporus, and sleeve part periphery arranges described first annular mounting groove, and plate portion is formed with enhancing
Bending, plate portion arranges described first connecting hole, the second connecting hole, the 3rd connecting hole and the 4th connecting hole, and plate portion is second even
Connect the breach being formed between hole and the 3rd connecting hole for avoiding motor, plate portion has through wires hole.
Preferably, the mounting distance of two tires is 800～950mm on this bridge case.
A kind of electri forklift, including bridge case as above.
The present invention, due to employing above technical scheme, is optimized to the mounting structure of bridge case, suitable electri forklift
Install, improve connection reliability, support strength and kinetic stability, improve service life, reduce manufacturing cost.Compared to existing
Technology, above-mentioned installation cooperation structure is more reasonable, not only so that being used for connecting forklift frame and bridge through connecting post and connecting hole
The connecting bolt of case is difficult to loosen and uniform force, so that the connection reliability of forklift frame and bridge case, supporting ＆ stablizing, connects
The service life of bolt also improves, and in fork truck work motor process, by the annular installation of attaching plate elements and its cooperation
The active force that groove is transferred on bridge case or even wheel is more uniform and stable, so that the abrasion of each parts binding site reduces to
Minimum, improves the service life of bridge case or even car body.
Brief description
Fig. 1 is one of axonometric chart of embodiment Bridge 1 case；
Fig. 2 is the two of the axonometric chart of embodiment Bridge 1 case；
Fig. 3 is the outline drawing of embodiment Bridge 1 case；
Fig. 4 is the left view (omitting left hand brake device) of Fig. 3；
Fig. 5 is the right view (omission right hand brake) of Fig. 3；
Fig. 6 is one of axonometric chart of embodiment 1 gear box cover；
Fig. 7 is the two of the axonometric chart of embodiment 1 gear box cover；
Fig. 8 is one of axonometric chart of embodiment 1 middle housing；
Fig. 9 is the two of the axonometric chart of embodiment 1 middle housing；
Figure 10 is the axonometric chart of embodiment 1 gripper shoe；
Figure 11 is one of axonometric chart of drive mechanism of the present invention；
Figure 12 is two (band middle housings) of the axonometric chart of drive mechanism of the present invention；
Figure 13 is three (band middle housings) of the axonometric chart of drive mechanism of the present invention；
Figure 14 is the axonometric chart of embodiment Bridge 2 case；
Figure 15 is the side view of embodiment Bridge 2 case；
Figure 16 is the structural representation of gear box cover and a kind of connected mode of its axle arm；
Figure 17 is the structural representation of differential case lid and a kind of connected mode of its axle arm；
Figure 18 is the structural representation of gear box cover and another kind of connected mode of its axle arm；
Figure 19 is the structural representation of differential case lid and another kind of connected mode of its axle arm.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, for the ease of description the present invention and simplify description, with shown in Fig. 3 definition " on ", D score,
"left", "right", wherein, " on " for product shown in Fig. 3 top, D score be product shown in Fig. 3 lower section, " left " be Fig. 3 shown in
The left of product, " right " right for product shown in Fig. 3, " front " " afterwards " is outwardly and inwardly divided into paper vertical in Fig. 3.Other
Term as " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " vertical ", " level ", " top ", " bottom ", " interior ",
" outward ", the orientation of instruction such as " clockwise ", " counterclockwise " or position relationship are based on orientation shown in the drawings or position relationship, only
It is for the ease of the description present invention and to simplify description, rather than the device of instruction or hint indication or element must have specifically
Orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, unless otherwise stated, " multiple " are meant that two
Individual or two or more, limits unless otherwise clear and definite.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；It can be machine
Tool connects or electrically connects；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two units
Connection within part.For the ordinary skill in the art, above-mentioned term can be understood as the case may be at this
Concrete meaning in bright.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included not to be directly contact but passes through it is also possible to include the first and second features
Between other characterisation contact.And, fisrt feature second feature " on ", that " top " and " above " include first is special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
The first embodiment of bridge case of the present invention:
As shown in Figure 1, Figure 2 with a kind of bridge case for electri forklift shown in Figure 11-13, including middle housing 4, middle housing
Gear box cover 5 is fixed in 4 side, and the first axle arm 11 is fixed on gear box cover 5, and the opposite side of middle housing 4 fixes differential
Case lid 2, the second axle arm 12 is fixed on differential case lid 2, and on the second axle arm 12, suit fixes the first gripper shoe 3, the first car
Brake 1 is respectively mounted on brachium pontis 11 and the second axle arm 12, the first gripper shoe 3 between differential case lid 2 and brake 1,
It is respectively mounted jack shaft 6, two jack shafts 6 pass through differential assembly 10 even in one axle arm 11 and the second axle arm 12
Connect, differential assembly 10 passes through double crosslinking gear shaft 9, second gear 802, first gear 801 and input gear 701 and motor transmission
Connect, input gear 701 is fixed on adapter sleeve 7, adapter sleeve 7 and motor output shaft spline connection, input gear 701 and first
Gear 801 engaged transmission, first gear 801 is fixedly connected with second gear 802 and is arranged on same power transmission shaft 8 by bearing
On, gear wheel 901 engaged transmission on second gear 802 and double crosslinking gear shaft 9, the little gear 902 on double crosslinking gear shaft 9 with poor
The external gear engaged transmission of fast device assembly 10.Said gear transmission is angular gear transmission.
A kind of electri forklift, including bridge case as above, is provided with the second annular mounting groove 514 He on gear box cover 5
Multiple connecting posts 501,502,503,504, the first gripper shoe 3 be provided with first annular mounting groove 306 and multiple connecting hole 301,
302nd, 303,304, this bridge case by first annular mounting groove 306, the second annular mounting groove 514, connecting post 501,502,503,
504 and connecting hole 301,302,303,304 be connected with forklift frame.
Bridge case as shown in Figure 3, the outer face of multiple connecting posts 501,502,503,504 is all in same plane a, multiple
The outer face of connecting hole 301,302,303,304 all in approximately the same plane b, this plane a and plane b all with described jack shaft
Axis vertical and with forklift frame front-rear center line ii apart from identical；The spacing of plane a and plane b is a, then, the first ring
Spacing b of the outer face of the outer face of shape mounting groove 306 and the second annular mounting groove 514 is 70%～100%a, and first
The outer face of the outer face of annular mounting groove 306 and the second annular mounting groove 514 and forklift frame front-rear center line ii are apart from phase
With the base diameter c1 of first annular mounting groove 306 and the second annular mounting groove 514 is 15%～25%a, first annular peace
The width c2 of tankage 306 and the second annular mounting groove 514 is 3%～8%a.
The mounting structure of bridge case: as shown in Figure 4, Figure 5, respective installing hole in multiple connecting posts 501,502,503,504
Axis, and each axis of the multiple connecting holes 301,302,303,304 in gripper shoe 3, be respectively positioned on the axis of power transmission shaft 8 with
Between the axis of jack shaft 6, the diameter parallel of the axis of power transmission shaft 8 and jack shaft 6 and both are generally aligned in the same plane c
In, the axis of power transmission shaft 8 is 38%～53%a with spacing d of the axis of jack shaft 6, with this plane c as horizontal plane, then, such as
In gripper shoe 3 shown in Fig. 4: the first connecting hole 301 and the second connecting hole 302 are positioned at the top of plane c, the first connecting hole 301
Horizontal range f1 of the axis of axis and jack shaft 6 be 15%～25%d, the axis of the first connecting hole 301 and plane c
Vertical dimension f2 is 75%～85%d, and the axis of the second connecting hole 302 and horizontal range g1 of the axis of jack shaft 6 are
40%～50%d, the axis of the second connecting hole 302 and vertical dimension g2 of plane c are 65%～75%d；3rd connecting hole 303
It is located at the lower section of plane c, the horizontal range of the axis of the 3rd connecting hole 303 and the axis of jack shaft 6 with the 4th connecting hole 304
H1 is 75%～85%d, and the axis of the 3rd connecting hole 303 and vertical dimension h2 of plane c are 15%～25%d, the 4th connection
Horizontal range i1 of the axis of the axis in hole 304 and jack shaft 6 is 65%～75%d, the axis of the 4th connecting hole 304 with flat
Vertical dimension i2 of face c is 40%～50%d.As shown in figure 5, the first connecting post 501, the second connecting post 502 and the 3rd connection
Post 503 is located at the top of plane c, and the axially bored line of installing of the first connecting post 501 with horizontal range k1 of the axis of jack shaft 6 is
30%～40%d, the axially bored line of installing of the first connecting post 501 is 75%～85%d with vertical dimension k2 of plane c, and second even
The axially bored line of installing connecing post 502 is 55%～65%d with horizontal range m1 of the axis of jack shaft 6, the second connecting post 502
Installation axially bored line is 50%～60%d with vertical dimension m2 of plane c, and the installation axially bored line of the 3rd connecting post 503 is with driving partly
Horizontal range n1 of the axis of axle 6 is 70%～80%d, the vertical dimension installing axially bored line and plane c of the 3rd connecting post 503
N2 is 15%～25%d；4th connecting post 504 is located at lower section, the installation axially bored line of the 4th connecting post 504 and the driving of plane c
Horizontal range p1 of the axis of semiaxis 6 be 75%～85%d, the 4th connecting post 504 install axially bored line vertical with plane c away from
It is 30%～40%d from p2.Compared to prior art, above-mentioned installation cooperation structure is more reasonable, not only so that through connecting post
The connecting bolt being used for connecting forklift frame and bridge case with connecting hole is difficult to loosen and uniform force so that forklift frame with
The connection of bridge case is reliable, supporting ＆ stablizing, and the service life of connecting bolt also improves, and in fork truck work motor process, leads to
The active force that the annular mounting groove crossing attaching plate elements and its cooperation is transferred on bridge case or even wheel is more uniform and stable, so that
The abrasion obtaining each parts binding site is minimized, and improves the service life of bridge case or even car body.
The drive mechanism of bridge case: as shown in figure 4, the axis of input gear 701 be located at jack shaft 6 axis rear on
Side, the axis of input gear 701 is 100%～110%d with horizontal range e1 of the axis of jack shaft 6, input gear 701
Vertical dimension e2 of axis and plane c be 40%～50%d；As shown in figure 5, the axis of double crosslinking gear shaft 9 is located at power transmission shaft 8
Axis and the axis of jack shaft 6 between and be located at the lower section of plane c, the axis of double crosslinking gear shaft 9 and jack shaft 6
Horizontal range j1 of axis is 45%～55%d, and the axis of double crosslinking gear shaft 9 and vertical dimension j2 of plane c are 5%～15%
d.Compared to prior art, said gear fit structure is more reasonable, and not only driving torque is reliable and stable, and each strength of gear is equal
Even, and, convenient installation, lubrication is good, substantially increases the service life of drive mechanism parts in bridge case.Real by simulation
The fatigue test of border service condition, the service life of bridge case improves 20% about compared to prior art.
The gear box cover 5 of bridge case, as shown in Figure 6, Figure 7, gear box cover 5 is provided with the axis hole for installing jack shaft 6
A507, for installing the axis hole b509 of double crosslinking gear shaft 9, for installing the axis hole c511 of power transmission shaft 8 and be used for installing adapter sleeve 7
Axis hole d512, wherein, axis hole a507 and axis hole c511 be through hole, axis hole b509 and axis hole d512 be blind hole.Gear box cover 5
Inner side is the connection wall 505 engaging with middle housing 4, and this connection wall 505 is used for arranging jack shaft 6, duplex-gear around formation
The gear wheel 901 of wheel shaft 9, the groove a of second gear 802, first gear 801 and input gear 701, including receiving input gear
701 chamber, the chamber 510 accommodating first gear 801, the chamber 508 accommodating gear wheel 901 and the chamber accommodating jack shaft 6
Room 506.The outside of gear box cover 5 arranges the first connecting post 501, the second connecting post 502, the 3rd connecting post 503, the 4th connecting post
504 and the linking arm 513 that is enclosed within jack shaft 6 outside, described second annular mounting groove 514 is arranged on this linking arm 513
On periphery, the outside of this linking arm 513 is fixedly connected with the first axle arm 11.Likewise, for the axis hole installing power transmission shaft 8
, with for installing the diameter parallel of axis hole a507 of jack shaft 6 and both are generally aligned in the same plane in c, this two for the axis of c511
Spacing d of axis is 38%～53%a, and with this plane c as horizontal plane, then, the axis of axis hole d512 is located at the axle of axis hole a507
The back upper place of line, the axis of axis hole d512 is 100%～110%d, axis hole d512 with horizontal range e1 of the axis of axis hole a507
Vertical dimension e2 of axis and plane c be 40%～50%d；The axis of axis hole b509 is located at axis and the axis hole of axis hole c511
Between the axis of a507 and be located at the lower section of plane c, horizontal range j1 of the axis of the axis of axis hole b509 and axis hole a507
For 45%～55%d, the axis of axis hole b509 and vertical dimension 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 is provided with the axis hole for wearing jack shaft 6
E413, for wearing the intercommunicating pore 411 of double crosslinking gear shaft 9, for installing the axis hole f409 of power transmission shaft 8 and be used for installing adapter sleeve
7 axis hole g407, wherein, axis hole e413, axis hole f409 and axis hole g407 are through hole；The side of middle housing 4 is and slows down
Case lid 5 engage deceleration side connection wall 405, this deceleration side connection wall 405 around formed for arrange jack shaft 6 one end,
The gear wheel 901 of double crosslinking gear shaft 9 and the groove b of second gear 802, groove b include accommodate second gear 802 chamber 408,
Accommodate the chamber 410 of gear wheel 901 and the chamber 412 accommodating jack shaft 6 one end, axis hole g407 wall protrude from groove b thus
It is formed with cannelure 406 between axis hole g407 wall and deceleration side connection wall 405；The opposite side of middle housing 4 is and differential box
The differential side connection wall 414 of lid 2 joint, this differential side connection wall 414 is used for arranging differential assembly 10 and little tooth around formation
The groove c of wheel 902, groove c include accommodating the chamber 416 of differential assembly 10；It is provided with dividing plate between described groove b and groove c
404, axis hole e413 are arranged on dividing plate 404, axis hole e413 and intercommunicating pore 411 insertion groove b and groove c, and dividing plate 404 is in axis hole
Part between e413 and intercommunicating pore 411 forms arc bridge portion, and dividing plate 404 is formed with multiple reinforcements, dividing plate in groove b side
404 are formed with multiple depressions in groove c side.Middle housing 4 is to install motor and transmission at the rear of differential side connection wall 414
The assembly wall 417 of axle 8, and for increasing the reinforcement 415 of middle housing semi-finals degree.Likewise, for installing power transmission shaft 8
The axis of axis hole f409 with for installing the diameter parallel of axis hole e413 of jack shaft 6 and both are generally aligned in the same plane in c,
Spacing d of this two axial lines is 38%～53%a, and with this plane c as horizontal plane, then, the axis of axis hole g407 is located at axis hole e413
Axis back upper place, horizontal range e1 of the axis of the axis of axis hole g407 and axis hole e413 is 100%～110%d, axis hole
The axis of g407 and vertical dimension e2 of plane c are 40%～50%d；The upper end of intercommunicating pore 411 is located at the top of plane c, even
The lower end of through hole 411 is located at the lower section of plane c.
First gripper shoe 3 of bridge case, as shown in Figure 10, the first gripper shoe 3 is included for being sleeved on the second axle arm 12
Sleeve part and for connecting the plate portion of forklift frame, sleeve part has endoporus 307, sleeve part periphery arranges described first ring
Shape mounting groove 306, plate portion is formed with enhancing bending, and plate portion arranges described first connecting hole 301, the second connecting hole the 302, the 3rd
Connecting hole 303 and the 4th connecting hole 304, plate portion is formed for avoiding electricity between the second connecting hole 302 and the 3rd connecting hole 303
The breach 305 of machine, to facilitate installation motor；Through wires hole 308 is had on plate portion, the brake cable being convenient to brake passes through.
The lubrication system of bridge case, as shown in Figure 1, Figure 3, is provided with pouring orifice at the top of middle housing 4, and pouring orifice is by ventilating
Plug 401 clogs, and the front portion of middle housing 4 is provided with oil spilling mouth, and by blocking a402 closing, the bottom of middle housing 4 is provided with oil spilling mouth
Fuel outlet, fuel outlet is closed by blocking b403；When plane c that the axis of the axis of power transmission shaft 8 and jack shaft 6 is located is in level
When bridge case be arranged on plane c almost horizontal on fork truck, the lubricating oil liquid level in bridge case is higher than this plane c less than intercommunicating pore
411 upper end.So, differential assembly and each gear and its bearing can not only be lubricated well, and, with motor
Also without being sealed, deceleration space can also connect via intercommunicating pore the adapter sleeve connecting with the air in differential mechanism space
And discharge from the breather plug of pouring orifice.Preferably, described pouring orifice is located at the top of differential assembly 10, it is poor that fuel outlet is located at
The lower section of fast device assembly 10, oil spilling mouth is located at the front of differential assembly 10, and described pouring orifice, fuel outlet and oil spilling mouth are all middle
The groove b connection of casing 4.In above-mentioned bridge case, the outer end of jack shaft and axle arm are sealed by sealing member.
The first embodiment of above-mentioned bridge case, is primarily adapted for use in little tonnage fork car, arranges using outside gear box cover
Multiple connecting posts are connected with forklift frame, easy for installation, material-saving.But, for large-tonnage fork truck, its drive axle is relatively
Long, in order to obtain preferable bearing performance, when needing the position of gear box cover by the spacing a increase of above-mentioned plane a and plane b
Constant, such connecting post easily insufficient strength because length is oversize, it is therefore possible to use second embodiment:
As shown in figure 14, the second gripper shoe 51 is set in the outside of gear box cover 5, the second gripper shoe 51 is included for being set with
Sleeve part on the first axle arm 11 and the plate portion for connecting forklift frame, sleeve part periphery arranges described second annular
Mounting groove, plate portion is formed with enhancing bending, plate portion arranges described 5th connecting hole 5101, the 6th connecting hole the 5102, the 7th even
Connect hole 5103 and the 8th connecting hole 5104, plate portion is provided with the 9th connection between the 5th connecting hole 5101 and the 6th connecting hole 5102
Hole 5105, the second gripper shoe 51 is fixedly connected with gear box cover 5 by the connecting bolt through the 9th connecting hole 5105.Wherein,
The diameter parallel of the axis of power transmission shaft 8 and jack shaft 6 and both be generally aligned in the same plane in c, the axis of power transmission shaft 8 and driving
Spacing d of the axis of semiaxis 6 is 38%～53%a, with this plane c as horizontal plane, then, as shown in figure 15, the 5th connecting hole
5101st, the 6th connecting hole 5102 and the 7th connecting hole 5103 are located at top, the axis of the 5th connecting hole 5101 and the driving of plane c
Horizontal range q1 of the axis of semiaxis 6 is 25%～35%d, the axis of the 5th connecting hole 5101 and vertical dimension q2 of plane c
For 75%～85%d, the axis of the 6th connecting hole 5102 is 65%～75%d with horizontal range r1 of the axis of jack shaft 6,
The axis of the 6th connecting hole 5102 and vertical dimension r2 of plane c are 45%～55%d, the axis of the 7th connecting hole 5103 and drive
Horizontal range t1 of the axis of dynamic semiaxis 6 is 75%～85%d, the axis of the 7th connecting hole 5103 and the vertical dimension of plane c
T2 is 20%～30%d；8th connecting hole 5104 is located at lower section, the axis of the 8th connecting hole 5104 and the jack shaft 6 of plane c
Horizontal range x1 of axis be 75%～85%d, the axis of the 8th connecting hole 5104 and vertical dimension x2 of plane c are 5%
～15%d.9th connecting hole 5105 is located at the top of plane c, the axis of the 9th connecting hole 5105 and the axis of jack shaft 6
Horizontal range s1 is 45%～55%d, and the axis of the 9th connecting hole 5105 and vertical dimension s2 of plane c are 60%～70%d.
Need exist for illustrating, each connection hole site and Publication No. cn202944154u in above-mentioned second gripper shoe
The connection hole site of gripper shoe disclosed in patent documentation is close, but, the company in two in patent structure before gripper shoe
Connect hole site to be just as, inventor is in performance test and the actually used middle abrasion finding two gripper shoes and its connection member
Degree difference is larger, for this reason, inventor to the structure distribution of above-mentioned bridge case and installs and uses situation and carried out comprehensive and systematic point
Analysis and test, using the optimized design of two gripper shoe differentiation arrangements, so that the stress of each connection member of the present invention
Uniformly, connect reliable, supporting ＆ stablizing, in fork truck work motor process, by the annular mounting groove of attaching plate elements and its cooperation
The active force being transferred on bridge case or even wheel is more uniform and stable, so that the abrasion of each parts binding site reduces to
Little, improve the service life of each connection member, bridge case and car body.By simulating the fatigue test of actually used situation, bridge case
Service life compared to prior art improve 20% about.
The axle arm mounting structure of bridge case, preferably following several embodiments:
One is to be connected by connecting bolt, and as shown in figure 16, gear box cover 5 and the first axle arm 11 pass through 8 m16 bolts
Threaded fixation, as shown in figure 17, differential case lid 2 is connected by 8 m16 bolt threads with the second axle arm 12.
Two is no bonded, axle arm and case lid interference fit, and axle arm press-in load is more than 1 ton, in order to further
Ensure connection reliability, can be fixedly connected further in the way of using alignment pin, holding screw or welding, as Figure 18 institute
Show, gear box cover 5 is fixedly connected with the first axle arm 11 interference fit and by plug welding 13, as shown in figure 19, differential case lid 2 with
Second axle arm 12 interference fit is simultaneously fixedly connected by plug welding 13.So connect reliability, fixation, need not seal.
The embodiment of above-mentioned two bridge case is a motor left side and puts mode it is also possible to be changed to the motor right side to put mode, only
Bridge box structure need to be carried out mirror image conversion designs.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Claims (10)
1. it is used for the bridge case of electri forklift, including middle housing (4), gear box cover (5) is fixed in the side of middle housing (4), the
One axle arm (11) is fixed on gear box cover (5), the fixing differential case lid (2) of opposite side of middle housing (4), the second axle arm
(12) it is fixed on differential case lid (2), the upper suit of the second axle arm (12) fixes the first gripper shoe (3), the first axle arm (11)
With brake (1) is respectively mounted on the second axle arm (12), the first gripper shoe (3) differential case lid (2) and brake (1) it
Between, it is respectively mounted jack shaft (6) in the first axle arm (11) and the second axle arm (12), two jack shafts (6) are by poor
Fast device assembly (10) connects, and differential assembly (10) passes through double crosslinking gear shaft (9), second gear (802), first gear (801)
It is in transmission connection with motor with input gear (701)；It is characterized in that, gear box cover (5) is provided with the second annular mounting groove
(514) and multiple connecting post (501,502,503,504), the first gripper shoe (3) is provided with first annular mounting groove (306) and many
Individual connecting hole (301,302,303,304), this bridge case by first annular mounting groove (306), the second annular mounting groove (514),
Connecting post (501,502,503,504) and connecting hole (301,302,303,304) are connected with forklift frame；Described multiple connections
The outer face of post (501,502,503,504) and the spacing of the described outer face of multiple connecting holes (301,302,303,304)
For a, then, spacing b of the outer face of first annular mounting groove (306) and the outer face of the second annular mounting groove (514) is 70%
～100%a, the base diameter (c1) of first annular mounting groove (306) and the second annular mounting groove (514) is 15%～25%
A, the width (c2) of first annular mounting groove (306) and the second annular mounting groove (514) is 3%～8%a；Described is multiple
The axis of the respective installing hole in connecting post (501,502,503,504), and multiple connecting holes in gripper shoe (3) (301,
302nd, 303,304) each axis, is respectively positioned on the axis of power transmission shaft (8) of first gear (801) and the axis of jack shaft (6)
Between, the diameter parallel of the axis of power transmission shaft (8) and jack shaft (6) and both be generally aligned in the same plane in c, power transmission shaft (8)
Spacing d of the axis of axis and jack shaft (6) be 38%～53%a, with this plane c as horizontal plane, then, the first gripper shoe
(3) in the multiple connecting holes (301,302,303,304) on: the first connecting hole (301) and the second connecting hole (302) are located at plane
The top of c, the axis of the first connecting hole (301) is 15%～25%d with the horizontal range (f1) of the axis of jack shaft (6),
The axis of the first connecting hole (301) is 75%～85%d with the vertical dimension (f2) of plane c, the axis of the second connecting hole (302)
It is 40%～50%d with the horizontal range (g1) of the axis of jack shaft (6), the axis of the second connecting hole (302) and plane c
Vertical dimension (g2) is 65%～75%d；3rd connecting hole (303) and the 4th connecting hole (304) are located at the lower section of plane c, the
The axis of three connecting holes (303) is 75%～85%d with the horizontal range (h1) of the axis of jack shaft (6), the 3rd connecting hole
(303) axis is 15%～25%d, the axis of the 4th connecting hole (304) and jack shaft with the vertical dimension (h2) of plane c
(6) horizontal range (i1) of axis is 65%～75%d, the axis of the 4th connecting hole (304) and the vertical dimension of plane c
(i2) it is 40%～50%d；Then, in the multiple connecting posts (501,502,503,504) on gear box cover (5): the first connecting post
(501), the second connecting post (502) and the 3rd connecting post (503) are positioned at the top of plane c, the installing hole of the first connecting post (501)
Axis is 30%～40%d with the horizontal range (k1) of the axis of jack shaft (6), the installation hole axle of the first connecting post (501)
Line is 75%～85%d, the installation axially bored line of the second connecting post (502) and jack shaft (6) with the vertical dimension (k2) of plane c
Axis horizontal range (m1) be 55%～65%d, the second connecting post (502) install axially bored line vertical with plane c away from
It is 50%～60%d from (m2), the horizontal range of the installation axially bored line of the 3rd connecting post (503) and the axis of jack shaft (6)
(n1) it is 70%～80%d, the vertical dimension (n2) installing axially bored line and plane c of the 3rd connecting post (503) is 15%～
25%d；4th connecting post (504) is located at the lower section of plane c, the installation axially bored line of the 4th connecting post (504) and jack shaft (6)
Axis horizontal range (p1) be 75%～85%d, the 4th connecting post (504) install axially bored line vertical with plane c away from
It is 30%～40%d from (p2).
2. the bridge case for electri forklift according to claim 1 is it is characterised in that the axle of described input gear (701)
Line is located at the back upper place of the axis of jack shaft (6), the level of the axis of the axis of input gear (701) and jack shaft (6)
Distance (e1) is 100%～110%d, and the axis of input gear (701) is 40%～50% with the vertical dimension (e2) of plane c
d.
3. the bridge case for electri forklift according to claim 1 is it is characterised in that the axle of described double crosslinking gear shaft (9)
Line is located between the axis of power transmission shaft (8) and the axis of jack shaft (6) and is located at the lower section of plane c, double crosslinking gear shaft (9)
The horizontal range (j1) of the axis of axis and jack shaft (6) be 45%～55%d, the axis of double crosslinking gear shaft (9) with flat
The vertical dimension (j2) of face c is 5%～15%d.
4. the bridge case for electri forklift according to claim 1 is it is characterised in that described gear box cover (5) is provided with
For installing the axis hole a (507) of jack shaft (6), being used for installing the axis hole b (509) of double crosslinking gear shaft (9), be used for installing biography
The axis hole c (511) of moving axis (8) and be used for installing the axis hole d (512) of adapter sleeve (7)；The inner side of gear box cover (5) is and centre
The connection wall (505) that casing (4) engages, this connection wall (505) is used for arranging jack shaft (6), double crosslinking gear shaft around formation
(9) gear wheel (901), the groove a of second gear (802), first gear (801) and input gear (701)；Gear box cover
(5) outside arranges the first connecting post (501), the second connecting post (502), the 3rd connecting post (503), the 4th connecting post (504)
And it is enclosed within linking arm (513) outside jack shaft (6), described second annular mounting groove (514) is arranged on this linking arm
(513), on periphery, the outside of this linking arm (513) is fixedly connected with the first axle arm (11).
5. the bridge case for electri forklift according to claim 1 is it is characterised in that described middle housing (4) is provided with
For the axis hole e (413) wearing jack shaft (6), the intercommunicating pore (411) being used for wearing double crosslinking gear shaft (9), it is used for biography is installed
The axis hole f (409) of moving axis (8) and be used for installing the axis hole g (407) of adapter sleeve (7), wherein, axis hole e (413), axis hole f (409)
It is through hole with axis hole g (407)；The side of middle housing (4) is the deceleration side connection wall (405) engaging with gear box cover (5),
This deceleration side connection wall (405) is used for arranging one end of jack shaft (6), the gear wheel of double crosslinking gear shaft (9) around formation
(901) and second gear (802) groove b；The opposite side of middle housing (4) is that the differential side being engaged with differential case lid (2) is connected
Connect wall (414), this differential side connection wall (414) is used for arranging the recessed of differential assembly (10) and little gear (902) around formation
Groove c；It is provided with dividing plate (404), axis hole e (413) is arranged on dividing plate (404), axis hole e (413) between described groove b and groove c
With intercommunicating pore (411) insertion groove b and groove c, part shape between axis hole e (413) and intercommunicating pore (411) for the dividing plate (404)
Camber bridge portion.
6. the bridge case for electri forklift according to claim 5 is it is characterised in that described dividing plate (404) is in groove b mono-
Side is formed with multiple reinforcements, and dividing plate (404) is formed with multiple depressions in groove c side.
7. the bridge case for electri forklift according to claim 5 is it is characterised in that described middle housing (4) is in differential
The rear of side connection wall (414) is the assembly wall (417) installing motor and power transmission shaft (8), and is used for increasing middle housing (4)
The reinforcement (415) of intensity.
8. the bridge case for electri forklift according to claim 1 is it is characterised in that described first gripper shoe (3) includes
Plate portion for the sleeve part that is sleeved on the second axle arm (12) with for connecting forklift frame, 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 arranges institute
State the first connecting hole (301), the second connecting hole (302), the 3rd connecting hole (303) and the 4th connecting hole (304), plate portion is second
Form the breach (305) for avoiding motor between connecting hole (302) and the 3rd connecting hole (303), plate portion has through wires hole
(308).
9. the bridge case for electri forklift according to claim 1 it is characterised in that on this bridge case two tires installation
Distance is 800～950mm.
10. a kind of electri forklift is it is characterised in that include bridge case as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132988.1A CN104742650B (en) | 2015-03-25 | 2015-03-25 | Electric forklift and axle box thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510132988.1A CN104742650B (en) | 2015-03-25 | 2015-03-25 | Electric forklift and axle box thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104742650A CN104742650A (en) | 2015-07-01 |
| CN104742650B true CN104742650B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510132988.1A Active CN104742650B (en) | 2015-03-25 | 2015-03-25 | Electric forklift and axle box thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104742650B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3452323B1 (en) * | 2016-05-06 | 2021-08-18 | Allison Transmission, Inc. | Axle assembly with electric motor |
| CN107246464A (en) * | 2017-01-24 | 2017-10-13 | 浙江联宜电机有限公司 | High-precision rear axle of scooter reduction box |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033103A (en) * | 1983-08-02 | 1985-02-20 | Honda Motor Co Ltd | Supporting device of driving wheel |
| CN201342939Y (en) * | 2009-01-21 | 2009-11-11 | 宁波如意股份有限公司 | Driving axle for counter balanced forklift truck |
| CN202294272U (en) * | 2011-09-29 | 2012-07-04 | 台励福机器设备(青岛)有限公司 | Reduction gearbox for accumulator-powered forklift truck and drive axle device |
| WO2015166326A1 (en) * | 2014-05-02 | 2015-11-05 | Omci S.P.A. | Driving axle for operating machines of medium-big dimensions |
| CN204567137U (en) * | 2015-03-25 | 2015-08-19 | 绍兴金道齿轮箱有限公司 | Electri forklift and bridge case thereof |
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2015
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| CN104742650A (en) | 2015-07-01 |
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Address after: 312000 No. 22 Zhongxing Road, Zhejiang City, Shaoxing City, Zhejiang 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: 312065 no.689, Bujin Road, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: ZHEJIANG JINDAO TECHNOLOGY Co.,Ltd. Address before: 312000 No. 22 Zhongxing Road, Zhejiang City, Shaoxing City, Zhejiang province. Patentee before: ZHEJIANG JINDAO TECHNOLOGY Co.,Ltd. |