CN204567286U - Electri forklift, bridge case and gear box cover thereof - Google Patents
Electri forklift, bridge case and gear box cover thereof Download PDFInfo
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- CN204567286U CN204567286U CN201520172159.1U CN201520172159U CN204567286U CN 204567286 U CN204567286 U CN 204567286U CN 201520172159 U CN201520172159 U CN 201520172159U CN 204567286 U CN204567286 U CN 204567286U
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Abstract
The utility model discloses a kind of electri forklift, bridge case and gear box cover thereof, this gear box cover is provided with axis hole A, axis hole B, axis hole C and axis hole D; The inner side of gear box cover is the connecting wall engaged with middle housing, and this connecting wall is around formation groove A; Arranged outside first joint pin of gear box cover, the second joint pin, the 3rd joint pin, the 4th joint pin and connecting arm; The axis of axis hole C axis hole A is arranged in plane C, and axis hole C and axis hole A axis spacing are d, and with this plane C for horizontal surface, then axis hole D is positioned at axis hole A back upper place, is 100% ~ 110%d with the horizontal throw of axis hole A, is 40% ~ 50%d with the vertical distance of plane C; Axis hole B is positioned at below plane C, is 45% ~ 55%d with axis hole A horizontal throw, is 5% ~ 15%d with the vertical distance of plane C.The utility model, according to the mounting structure of bridge case and drive mechanism, is optimized the aspect such as component structural, location arrangements.
Description
Technical field
The utility model relates to a kind of electri forklift, bridge case and gear box cover thereof.
Background technology
Elec. vehicle due to noiseless, be not vented, overhaul simple, processing ease and tractive property is superior and be widely used, but because elec. vehicle needs a lot of power supply to provide energy, thus elec. vehicle is relative to fuel combustion vehicle, and the space utilization of vehicle is very crucial.The driving system of elec. vehicle comprises vehicle bridge, wheel, vehicle frame and suspension, drive motor via drop-gear box, drive axle by transmission of power to wheel.
Publication number is the bridge box assembly that patent document discloses a kind of batter fork lift truck of CN202944154, and it is by parallel with drive axle for drive motor placement and by change-speed box by power transmission, save space, makes overall more compact structure, layout more reasonable; Adopt the adjustable connection of stay bearing plate 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 working accuracy becomes.But the repetition test be through in recent years and actual use feedback, contriver thinks that above-mentioned bridge case is still needed on the service life and manufacturing cost of space layout, support strength, transmission stability, parts and improves further.
Summary of the invention
In order to solve above-mentioned technical matters, the purpose of this utility model is to provide a kind of electri forklift, bridge case and gear box cover thereof, and this gear box cover, according to the mounting structure of bridge case and drive mechanism, is optimized the aspect such as component structural, location arrangements.
To achieve the above object, the utility model have employed following technical scheme:
The gear box cover of bridge case, this gear box cover be provided with axis hole A for installing jack shaft, for install double crosslinking gear shaft axis hole B, for installing the axis hole C of transmission shaft and the axis hole D for installing adapter sleeve; The inner side of gear box cover is the connecting wall engaged with middle housing, and this connecting wall is around the groove A formed for arranging jack shaft, the big gear wheel of double crosslinking gear shaft, the second gear, the first gear and input gear; Arranged outside first joint pin of gear box cover, the second joint pin, the 3rd joint pin, the 4th joint pin and connecting arm, the outside of this connecting arm is fixedly connected with the first vehicle bridge arm; For the axis of installing the axis hole C of transmission shaft with for installing the axis being parallel of the axis hole A of jack shaft and both are arranged in same plane C, the spacing of the axis of axis hole C and the axis of axis hole A is d, with this plane C for horizontal surface, then, the axis of axis hole D is positioned at the back upper place of the axis of axis hole A, the horizontal throw of the axis of axis hole D and the axis of axis hole A is 100% ~ 110%d, and the axis of axis hole D and the vertical distance of plane C are 40% ~ 50%d; The axis of axis hole B is between the axis and the axis of axis hole A of axis hole C and be positioned at the below of plane C, and the horizontal throw of the axis of axis hole B and the axis of axis hole A is 45% ~ 55%d, and the axis of axis hole B and the vertical distance of plane C are 5% ~ 15%d.
As preferably, described first joint pin, second joint pin and the 3rd joint pin are positioned at the top of plane C, the horizontal throw of the mounting hole axis of the first joint pin and the axis of jack shaft is 30% ~ 40%d, the mounting hole axis of the first joint pin and the vertical distance of plane C are 75% ~ 85%d, the horizontal throw of the mounting hole axis of the second joint pin and the axis of jack shaft is 55% ~ 65%d, the mounting hole axis of the second joint pin and the vertical distance of plane C are 50% ~ 60%d, the horizontal throw of the mounting hole axis of the 3rd joint pin and the axis of jack shaft is 70% ~ 80%d, the mounting hole axis of the 3rd joint pin and the vertical distance of plane C are 15% ~ 25%d, 4th joint pin is positioned at the below of plane C, and the horizontal throw of the mounting hole axis of the 4th joint pin and the axis of jack shaft is 75% ~ 85%d, and the mounting hole axis of the 4th joint pin and the vertical distance of plane C are 30% ~ 40%d.
As preferably, the periphery of described connecting arm is arranged the second annular mounting groove.
For the bridge case of electri forklift, comprise gear box cover as above.
A kind of electri forklift, comprises bridge case as above.
The utility model is owing to have employed above technical scheme, this gear box cover is according to the mounting structure of bridge case and drive mechanism, the aspect such as component structural, location arrangements is optimized, compact and reasonable, the little space availability ratio of volume are high more not only to make drive mechanism, be applicable to electri forklift to install, and improve connection reliability, support strength and stability of motion, improve service life, reduce manufacturing cost.
Accompanying drawing explanation
Fig. 1 is one of block diagram of embodiment Bridge 1 case;
Fig. 2 is the block diagram two of embodiment Bridge 1 case;
Fig. 3 is the outside 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 elevation (omission right hand brake) of Fig. 3;
Fig. 6 is one of block diagram of embodiment 1 gear box cover;
Fig. 7 is the block diagram two of embodiment 1 gear box cover;
Fig. 8 is one of block diagram of embodiment 1 middle housing;
Fig. 9 is the block diagram two of embodiment 1 middle housing;
Figure 10 is the block diagram of embodiment 1 stay bearing plate;
Figure 11 is one of block diagram of the utility model drive mechanism;
Figure 12 is the block diagram two (band middle housing) of the utility model drive mechanism;
Figure 13 is the block diagram three (band middle housing) of the utility model drive mechanism;
Figure 14 is the block diagram of embodiment Bridge 2 case;
Figure 15 is the lateral plan of embodiment Bridge 2 case;
Figure 16 is the structural representation of a kind of connection mode of gear box cover and its vehicle bridge arm;
Figure 17 is the structural representation of a kind of connection mode of differential case lid and its vehicle bridge arm;
Figure 18 is the structural representation of the another kind of connection mode of gear box cover and its vehicle bridge arm;
Figure 19 is the structural representation of the another kind of connection mode of differential case lid and its vehicle bridge arm.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, 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 utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, the utility model 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 are as " orientation or the position relationship of the instruction such as " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " cw ", " conter clockwise " be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
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 characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more, unless otherwise clear and definite restriction.
In the utility model, 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, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, 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 embodiment of the utility model bridge case:
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 stay bearing plate 3 fixed by suit, first vehicle bridge arm 11 and the second vehicle bridge arm 12 install drg 1 respectively, first stay bearing plate 3 is between differential case lid 2 and drg 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 adapter sleeve 7, adapter sleeve 7 and motor output shaft spline joint, input gear 701 and the first gear 801 engaged transmission, 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 big gear wheel 901 engaged transmission on double crosslinking gear shaft 9, miniature gears 902 on double crosslinking gear shaft 9 and the external gear engaged transmission 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 joint pin 501,502,503,504, first stay bearing plate 3 is provided with the first annular mounting groove 306 and multiple connecting bore 301,302,303,304, and this bridge case is connected with forklift frame with connecting bore 301,302,303,304 by the first annular mounting groove 306, second annular mounting groove 514, joint pin 501,502,503,504.
Bridge case as shown in Figure 3, the outer face of multiple joint pin 501,502,503,504 is all in same plane A, the outer face of multiple connecting bore 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 outer face of the first annular mounting groove 306 and the outer face of the second annular mounting groove 514 is 70% ~ 100%a, and the outer face of the outer 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 joint pin 501, 502, 503, the axis of the respective mounting hole on 504, and the multiple connecting bores 301 on stay bearing plate 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 surface, then, on stay bearing plate 3 as shown in Figure 4: the first connecting bore 301 and the second connecting bore 302 are positioned at the top of plane C, the horizontal throw f1 of the axis of the first connecting bore 301 and the axis of jack shaft 6 is 15% ~ 25%d, the axis of the first connecting bore 301 and the vertical distance f2 of plane C are 75% ~ 85%d, the horizontal throw g1 of the axis of the second connecting bore 302 and the axis of jack shaft 6 is 40% ~ 50%d, the axis of the second connecting bore 302 and the vertical distance g2 of plane C are 65% ~ 75%d, 3rd connecting bore 303 and the 4th connecting bore 304 are positioned at the below of plane C, the horizontal throw h1 of the axis of the 3rd connecting bore 303 and the axis of jack shaft 6 is 75% ~ 85%d, the axis of the 3rd connecting bore 303 and the vertical distance h2 of plane C are 15% ~ 25%d, the horizontal throw i1 of the axis of the 4th connecting bore 304 and the axis of jack shaft 6 is 65% ~ 75%d, and the axis of the 4th connecting bore 304 and the vertical distance i2 of plane C are 40% ~ 50%d.As shown in Figure 5, first joint pin 501, second joint pin 502 and the 3rd joint pin 503 are positioned at the top of plane C, the horizontal throw k1 of the mounting hole axis of the first joint pin 501 and the axis of jack shaft 6 is 30% ~ 40%d, the mounting hole axis of the first joint pin 501 and the vertical distance k2 of plane C are 75% ~ 85%d, the horizontal throw m1 of the mounting hole axis of the second joint pin 502 and the axis of jack shaft 6 is 55% ~ 65%d, the mounting hole axis of the second joint pin 502 and the vertical distance m2 of plane C are 50% ~ 60%d, the horizontal throw n1 of the mounting hole axis of the 3rd joint pin 503 and the axis of jack shaft 6 is 70% ~ 80%d, the mounting hole axis of the 3rd joint pin 503 and the vertical distance n2 of plane C are 15% ~ 25%d, 4th joint pin 504 is positioned at the below of plane C, and the horizontal throw p1 of the mounting hole axis of the 4th joint pin 504 and the axis of jack shaft 6 is 75% ~ 85%d, and the mounting hole axis of the 4th joint pin 504 and the vertical 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 joint pin and the connecting bore tie bolt for shaft clevis vehicle carriage and bridge case, thus make the connection of forklift frame and bridge case reliable, supporting & stablizing, the service life of tie bolt also improves, and in fork truck work motion process, the application 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 parts binding site reduce to minimum, improve the service 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 throw 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 vertical 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 throw 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 vertical distance 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 even, and convenient installation, lubrication is good, substantially increases the service life of drive mechanism parts in bridge case.By simulating the fatigue test of actual service condition, the service 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 adapter 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, big gear wheel 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 big gear wheel 901 and holding the chamber 506 of jack shaft 6.Arranged outside first joint pin 501, second joint pin 502 of gear box cover 5, the 3rd joint pin 503, the 4th joint pin 504 and the connecting arm 513 be enclosed within outside jack shaft 6, described second annular mounting groove 514 is arranged on the periphery of this connecting arm 513, and the outside of this connecting 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 surface, then, the axis of axis hole D512 is positioned at the back upper place of the axis of axis hole A507, and the horizontal throw 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 vertical 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 throw 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 vertical 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 adapter 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 big gear wheel 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 big gear wheel 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 miniature gears 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 reinforced 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 reinforced 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 surface, then, the axis of axis hole G407 is positioned at the back upper place of the axis of axis hole E413, and the horizontal throw 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 vertical 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 stay bearing plate 3 of bridge case, as shown in Figure 10, first stay bearing plate 3 comprises for being sleeved on the sleeve part on the second vehicle bridge arm 12 and the plate portion for shaft 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 connecting bore 301, second connecting bore 302, the 3rd connecting bore 303 and the 4th connecting bore 304, plate portion forms the breach 305 for dodging motor between the second connecting bore 302 and the 3rd connecting bore 303, to facilitate mounted motor; Plate portion has through wires hole 308, the brake cable being convenient to drg is passed.
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, pouring orifice is clogged by breather stem vent 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 oil drain hole, and oil drain hole 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 lubricating 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 adapter sleeve be connected with motor does not need to seal yet, deceleration space and the air in diff space also can be communicated with via intercommunicating pore and discharge from the breather stem vent plug of pouring orifice.As preferably, described pouring orifice is positioned at the top of differential assembly 10, and oil drain hole 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, oil drain hole 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 member.
The first embodiment of above-mentioned bridge case, is mainly applicable to little tonnage fork car, adopts and is connected with forklift frame at the multiple joint pin of gear box cover arranged outside, easy for installation, saves material.But, for large-tonnage fork truck, its drive axle 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 joint pin is the insufficient strength because length is oversize easily, therefore, can adopt the second embodiment:
As shown in figure 14, at arranged outside second stay bearing plate 51 of gear box cover 5, second stay bearing plate 51 comprises for being sleeved on the sleeve part on the first vehicle bridge arm 11 and the plate portion for shaft 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 connecting bore 5101, 6th connecting bore 5102, 7th connecting bore 5103 and the 8th connecting bore 5104, plate portion is provided with the 9th connecting bore 5105 between the 5th connecting bore 5101 and the 6th connecting bore 5102, second stay bearing plate 51 is fixedly connected with gear box cover 5 by the tie bolt through the 9th connecting bore 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 surface, then, as shown in figure 15, 5th connecting bore 5101, 6th connecting bore 5102 and the 7th connecting bore 5103 are positioned at the top of plane C, the horizontal throw q1 of the axis of the 5th connecting bore 5101 and the axis of jack shaft 6 is 25% ~ 35%d, the axis of the 5th connecting bore 5101 and the vertical distance q2 of plane C are 75% ~ 85%d, the horizontal throw r1 of the axis of the 6th connecting bore 5102 and the axis of jack shaft 6 is 65% ~ 75%d, the axis of the 6th connecting bore 5102 and the vertical distance r2 of plane C are 45% ~ 55%d, the horizontal throw t1 of the axis of the 7th connecting bore 5103 and the axis of jack shaft 6 is 75% ~ 85%d, the axis of the 7th connecting bore 5103 and the vertical distance t2 of plane C are 20% ~ 30%d, 8th connecting bore 5104 is positioned at the below of plane C, and the horizontal throw x1 of the axis of the 8th connecting bore 5104 and the axis of jack shaft 6 is 75% ~ 85%d, and the axis of the 8th connecting bore 5104 and the vertical distance x2 of plane C are 5% ~ 15%d.9th connecting bore 5105 is positioned at the top of plane C, and the horizontal throw s1 of the axis of the 9th connecting bore 5105 and the axis of jack shaft 6 is 45% ~ 55%d, and the axis of the 9th connecting bore 5105 and the vertical distance s2 of plane C are 60% ~ 70%d.
Here it should be noted that, on above-mentioned second stay bearing plate, the connecting bore position of each connecting bore position and publication number stay bearing plate disclosed in the patent documentation of CN202944154U is close, but, connecting bore position on two stay bearing plates in patent structure is before all the same, contriver finds that the degree of wear of two stay bearing plates and link thereof differs greatly in performance testing and actual use, for this reason, contriver is to the structure 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 stay bearing plate differentiation are arranged, thus make the uniform force of each link of the utility model, connect reliable, supporting & stablizing, in fork truck work motion process, the application 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 parts binding site reduce to minimum, improve each link, the service life of bridge case and car body.By simulating the fatigue test of actual service condition, the service life of bridge case improves about 20% compared to prior art.
The vehicle bridge arm mounting structure of bridge case, preferred following several embodiment:
One is connected by tie 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 dowel pin, the mode of holding 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 embodiment 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 sheets, 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 utility model 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 described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.
Claims (5)
1. the gear box cover of bridge case, it is characterized in that, this gear box cover (5) be provided with axis hole A (507) for installing jack shaft (6), for install double crosslinking gear shaft (9) axis hole B (509), for installing the axis hole C (511) of transmission shaft (8) and the axis hole D (512) for installing adapter sleeve (7), the inner side of gear box cover (5) is the connecting wall (505) engaged with middle housing (4), and this connecting wall (505) is used for arranging the groove A of jack shaft (6), the big gear wheel (901) of double crosslinking gear shaft (9), the second gear (802), the first gear (801) and input gear (701) around formation, arranged outside first joint pin (501) of gear box cover (5), the second joint pin (502), the 3rd joint pin (503), the 4th joint pin (504) and connecting arm (513), the outside of this connecting arm (513) is fixedly connected with the first vehicle bridge arm (11), for the axis of installing the axis hole C (511) of transmission shaft (8) with for installing the axis being parallel of the axis hole A (507) of jack shaft (6) and both are arranged in same plane C, the spacing of the axis of axis hole C (511) and the axis of axis hole A (507) is d, with this plane C for horizontal surface, then, the axis of axis hole D (512) is positioned at the back upper place of the axis of axis hole A (507), the horizontal throw (e1) of the axis of axis hole D (512) and the axis of axis hole A (507) is 100% ~ 110%d, the axis of axis hole D (512) and the vertical distance (e2) of plane C are 40% ~ 50%d, the axis of axis hole B (509) to be positioned between the axis of axis hole C (511) and the axis of axis hole A (507) and to be positioned at the below of plane C, the horizontal throw (j1) of the axis of axis hole B (509) and the axis of axis hole A (507) is 45% ~ 55%d, and the axis of axis hole B (509) and the vertical distance (j2) of plane C are 5% ~ 15%d.
2. the gear box cover of bridge case according to claim 1, it is characterized in that, described first joint pin (501), second joint pin (502) and the 3rd joint pin (503) are positioned at the top of plane C, the horizontal throw (k1) of the mounting hole axis of the first joint pin (501) and the axis of jack shaft (6) is 30% ~ 40%d, the mounting hole axis of the first joint pin (501) and the vertical distance (k2) of plane C are 75% ~ 85%d, the horizontal throw (m1) of the mounting hole axis of the second joint pin (502) and the axis of jack shaft (6) is 55% ~ 65%d, the mounting hole axis of the second joint pin (502) and the vertical distance (m2) of plane C are 50% ~ 60%d, the horizontal throw (n1) of the mounting hole axis of the 3rd joint pin (503) and the axis of jack shaft (6) is 70% ~ 80%d, the mounting hole axis of the 3rd joint pin (503) and the vertical distance (n2) of plane C are 15% ~ 25%d, 4th joint pin (504) is positioned at the below of plane C, the horizontal throw (p1) of the mounting hole axis of the 4th joint pin (504) and the axis of jack shaft (6) is 75% ~ 85%d, and the mounting hole axis of the 4th joint pin (504) and the vertical distance (p2) of plane C are 30% ~ 40%d.
3. the gear box cover of bridge case according to claim 1, is characterized in that, the periphery of described connecting arm (513) is arranged the second annular mounting groove (514).
4. for the bridge case of electri forklift, it is characterized in that, comprise gear box cover as claimed any one in claims 1 to 3.
5. an electri forklift, is characterized in that, comprises bridge case as claimed in claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520172159.1U CN204567286U (en) | 2015-03-25 | 2015-03-25 | Electri forklift, bridge case and gear box cover thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520172159.1U CN204567286U (en) | 2015-03-25 | 2015-03-25 | Electri forklift, bridge case and gear box cover thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204567286U true CN204567286U (en) | 2015-08-19 |
Family
ID=53859967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520172159.1U Withdrawn - After Issue CN204567286U (en) | 2015-03-25 | 2015-03-25 | Electri forklift, bridge case and gear box cover thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204567286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709076A (en) * | 2015-03-25 | 2015-06-17 | 绍兴金道齿轮箱有限公司 | Electric fork-lift truck, axle case and reducer casing cover thereof |
| WO2021139142A1 (en) * | 2020-01-09 | 2021-07-15 | 精进电动科技(菏泽)有限公司 | Box structure of speed reducer |
-
2015
- 2015-03-25 CN CN201520172159.1U patent/CN204567286U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709076A (en) * | 2015-03-25 | 2015-06-17 | 绍兴金道齿轮箱有限公司 | Electric fork-lift truck, axle case and reducer casing cover thereof |
| CN104709076B (en) * | 2015-03-25 | 2017-05-24 | 绍兴金道齿轮箱有限公司 | Electric fork-lift truck, axle case and reducer casing cover thereof |
| WO2021139142A1 (en) * | 2020-01-09 | 2021-07-15 | 精进电动科技(菏泽)有限公司 | Box structure of speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20170524 |
|
| AV01 | Patent right actively abandoned |