CN212332284U - Steering drive axle and forklift - Google Patents
Steering drive axle and forklift Download PDFInfo
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- CN212332284U CN212332284U CN202022172216.XU CN202022172216U CN212332284U CN 212332284 U CN212332284 U CN 212332284U CN 202022172216 U CN202022172216 U CN 202022172216U CN 212332284 U CN212332284 U CN 212332284U
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Abstract
The utility model relates to a steering drive axle and a forklift, wherein the steering drive axle comprises a shell, a differential power mechanism and a left steering box body and a right steering box body which are symmetrically arranged, the shell comprises an upper box body and a lower supporting plate, and the left steering box body and the right steering box body are both rotatably arranged between the upper box body and the lower supporting plate; the differential power mechanism comprises a differential assembly, a left power output half shaft and a right power output half shaft, the power output half shafts are used as power input of the steering box body, and the steering box body is provided with a power output shaft; the steering oil cylinder is used for driving the left steering box body and the right steering box body to synchronously rotate. The forklift comprises a front axle and a rear axle, and the front axle and/or the rear axle adopt a steering drive axle. The utility model discloses a turn to the angle and can reach 60 degrees, can realize the little space internal turn, turn to structure and drive structure and be divided, mutual noninterference and influence, the vehicle of this axle of vehicle installation can not only go on complicated road conditions, can realize the wide-angle moreover and turn to, and the turn is nimble, can be in little space internal turn.
Description
Technical Field
The utility model relates to a turn to fork truck that drive axle adopted this drive axle that turns to belongs to vehicle steering drive technical field.
Background
The axle uses comparatively more on fork truck rear axle, and fork truck is extensive although the usage, nevertheless has certain requirement to the road conditions, and ordinary fork truck can normally travel on level road surface, meets the muddy complicated road conditions of rainy day and probably can't normally work. There are two main types of steering axles on the market today, one without drive and the other with drive. The axle without driving has the characteristics that the turning angle is about 70 degrees, and the small-range turning can be realized, but the problems of skidding, sinking into puddles and the like can occur due to the unpowered driving of wheels when complex road conditions such as muddy rainy days are met, so that the normal driving can not be realized; the turning structure of the common axle with drive in the market at present is that the differential mechanism is connected with the half shafts at two sides, the half shafts are connected with the wheel axle head through the cross shaft to realize the drive, the steering drive mechanism drives the wheel axle head to rotate by an angle, on one hand, the steering angle is limited due to the influence of the structure of the cross shaft, on the other hand, the steering and power transmission both pass through the cross shaft, the cross shaft not only undertakes the steering but also realizes the power transmission, in the running process of the vehicle, an included angle formed by the steering of the cross shaft can also influence the power transmission, so the steering angle is limited, when the turning angle exceeds about 35 degrees, the axle cannot be driven, cannot output the power, and cannot realize the turning in a small space, therefore, the existing steering drive axle can linearly run and turn at a small angle under complex road conditions, the turning angle is within 35 degrees, the turning radius is large, and the turning can be realized only by reaching enough space in a field. The steering drive axle on the market at present has the problem that the steering in a small space can not be realized because the steering angle is about 35 degrees, the flexibility of a vehicle can not be solved, and the steering can be realized only by a sufficient space field during the steering.
Disclosure of Invention
The utility model discloses not enough to prior art exists provides a simple structure, power transmission and steering drive mutually noninterfere, and steering drive axle and fork truck that the angle of turning is big.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a steering drive axle comprises a shell, a differential power mechanism, a left steering box body and a right steering box body, wherein the shell comprises an upper box body and a lower supporting plate, the upper box body is connected with the lower supporting plate through a connecting piece, and the left steering box body and the right steering box body are both rotatably arranged between the upper box body and the lower supporting plate;
the differential power mechanism is arranged in the upper box body and comprises a differential mechanism assembly, a left power output half shaft and a right power output half shaft, the left power output half shaft is used as the power input of the left steering box body, the right power output half shaft is used as the power input of the right steering box body, and the left steering box body and the right steering box body are respectively provided with a left power output shaft and a right power output shaft;
the steering oil cylinder is used for driving the left steering box body and the right steering box body to synchronously rotate.
The utility model has the advantages that: the power drive is realized by transmitting power to the steering box body through an output half shaft of a differential power mechanism and then outputting the power through a power output shaft on the steering box body. The utility model discloses a turn to the angle and can reach 60 degrees, can realize the turn in the little space, turn to structure and drive structure and be divided, mutual noninterference and influence, the vehicle of installation this axle can not only go on complicated road conditions, can realize the wide-angle moreover and turn to, and the turn is nimble, can be at the little space internal turn.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, the left side and the right side of the upper box body are respectively provided with an upper shaft sleeve, and the upper parts of the left rotating box body and the right rotating box body are respectively connected with the upper shaft sleeves in a rotatable manner; the left side and the right side of the lower supporting plate are respectively provided with a steering fixed pin shaft, the lower parts of the left steering box body and the right steering box body are respectively provided with a lower shaft sleeve, and the lower shaft sleeves are rotatably connected with the steering fixed pin shafts.
The upper shaft sleeve extends out of the bottom of the upper box body, and the top of the steering pin shaft extends out of the upper surface of the lower supporting plate. The rotation of the steering box body between the upper box body and the lower supporting plate is realized through the matching of the upper shaft sleeve, the lower shaft sleeve and the steering fixed pin shaft.
Furthermore, a left transmission shaft and a right transmission shaft are respectively arranged in the left steering box body and the right steering box body, the upper parts of the left transmission shaft and the right transmission shaft are respectively and correspondingly connected with the left power output half shaft and the right power output half shaft through bevel gears, and the lower parts of the left transmission shaft and the right transmission shaft are respectively and correspondingly connected with the left power output shaft and the right power output shaft through bevel gears.
The adoption of the further scheme has the beneficial effects that the upper parts of the left and right transmission shafts are respectively provided with a first bevel gear, the lower parts of the left and right transmission shafts are respectively provided with a second bevel gear, the upper part of the upper shaft sleeve is connected with the first bevel gear through a bearing, the upper part of the lower shaft sleeve is connected with the second bevel gear through a bearing, and the left and right power output half shafts are respectively meshed with the first bevel gear through a fourth bevel gear; the left power output shaft and the right power output shaft are wheel-side speed reducing shafts which are rotatably arranged on the left steering box body and the right steering box body, and the wheel-side speed reducing shafts are meshed with the second bevel gears through third bevel gears. The differential power mechanism transmits power to the left transmission shaft and the right transmission shaft through the left power output half shaft and the right power output half shaft, and then transmits the power to the wheel hub reduction shafts on the left steering box body and the right steering box body through the left transmission shaft and the right transmission shaft, so that the power is transmitted to the wheel hub arranged on the wheel hub reduction shafts, and the rotation of wheels is realized.
Furthermore, the speed reducing mechanism is used for providing power for the differential power mechanism.
The beneficial effect of adopting the above further scheme is that the power input is realized and the rotating speed of the input power is adjusted at the same time.
Furthermore, the speed reducing mechanism comprises an input power shaft, a primary speed changing shaft and a secondary speed changing shaft which are rotatably arranged on the shell, adjacent shafts are in meshing transmission through gears, and the secondary speed changing shaft is in meshing transmission with the differential assembly through the gears.
The beneficial effect of adopting the above further scheme is that the outer end of the input power shaft is provided with a connecting flange. Be convenient for be connected with input power, realize power speed reduction on the one hand, on the other hand with power transmission to the differential mechanism assembly in the upper box body, avoid directly transmitting to the steering box body on influence the steering angle who turns to the box body.
Furthermore, one end of a piston rod of the steering oil cylinder is connected with the left steering box body through a crank arm, and the other end of the piston rod of the steering oil cylinder is connected with the right steering box body through the crank arm.
The beneficial effect who adopts above-mentioned further scheme is, for the convenience is connected with the steering box, be equipped with left otic placode, right otic placode on the left and right steering box respectively. Two ends of a piston rod of the steering oil cylinder are respectively connected with a crank arm, and the crank arm is hinged with the lug plate, so that the left steering box body and the right steering box body are synchronously driven.
Furthermore, the shell is further provided with a guide rod, the guide rod is perpendicular to the length direction of the steering oil cylinder, the steering oil cylinder is provided with a lifting ring or a lifting plate, and the lifting ring or the lifting plate is provided with a guide rod hole matched with the guide rod.
The beneficial effects of adopting above-mentioned further scheme are that, realize the support to the steering cylinder on the one hand, on the other hand can lead spacing to the home range of steering cylinder, avoids steering cylinder to appear the drunkenness in the axial direction of hydro-cylinder, and the steering cylinder drive left and right steering box body turned angle through guide arm and casing connection can reach 90 degrees.
Furthermore, the cylinder body of the steering oil cylinder is connected with the shell, the piston rod of the steering oil cylinder is connected with the left steering box body or the right steering box body through a crank arm, and the right steering box body or the left steering box body is connected with the left steering box body or the right steering box body through a synchronizing rod.
The beneficial effect who adopts above-mentioned further scheme is that, the cylinder body of steering cylinder installs on the casing, be equipped with the otic placode on the left and right steering box respectively. The free end of a piston rod of the steering oil cylinder is hinged to one end of the steering arm, the other end of the steering arm is hinged to an ear plate of the left steering box body or an ear plate of the right steering box body, the left steering box body and the right steering box body are connected through a synchronizing rod, one end of the specific synchronizing rod is hinged to the other ear plate of the left steering box body or the other ear plate of the right steering box body through the steering arm, and the other end of the specific synchronizing rod is hinged to the ear plate of the right steering box body or the ear plate of the left steering box body through the steering arm. The steering oil cylinders drive one steering box body to rotate, and the synchronous rotation of the two steering box bodies is realized through the synchronous rods.
Furthermore, the connecting piece is a connecting box body and/or a connecting plate for connecting the upper box body and the lower supporting plate.
Adopt above-mentioned further scheme's beneficial effect be, the connecting piece can be for connecting the box also can be the connecting plate, or both have to realize going up being connected between box and the bottom plate.
Furthermore, the shell is also provided with a hanging shaft.
The beneficial effect who adopts above-mentioned further scheme is that, the hanging scroll passes through bearing or copper sheathing and installs on the vehicle, when complicated road conditions, can rock along with the vehicle, realizes turning and the drive of vehicle.
Furthermore, the upper parts of the left and right steering box bodies are connected with the upper shaft sleeve through copper sleeves or bearings, and the lower parts of the steering box bodies are connected with the steering fixing pin shaft through copper sleeves or bearings.
The beneficial effect who adopts above-mentioned further scheme is, realizes the rotation of left and right steering box between last box and bottom plate through copper sheathing or bearing.
Furthermore, the upper parts of the left and right steering box bodies are of cylindrical structures, and the lower parts of the left and right steering box bodies are of square structures.
The beneficial effect of adopting the above-mentioned further scheme is that, the drive of steering cylinder to the steering box body of being convenient for. The utility model discloses an axle box divide into and moves, quiet two parts, the drive structure is that power passes through the connecting box in upper and lower three linkage cylinder helical gear upwards transmits for drive gear, make it mesh with differential mechanism assembly, respectively to both ends output power, 90 bevel gear of rethread, downward perpendicular transmission power, get into in the steering box, a set of 90 bevel gear of rethread is organized and is power take off for the hub reduction gear, the wheel is installed on the hub reduction gear, realize power transmission and output, through tooth number of gears and modulus ratio, the power rotational speed of output and hub reduction gear's position height and ordinary standard match back tire requirement unanimity, do not need the nonstandard tire of customization. The utility model discloses an axle turns to realize the free rotation with upper and lower both ends installation bearing and the copper sheathing of the steering box body of installing the wheel reduction gear, turns in the same direction when forming four-bar linkage structure and realizing two wheel reduction gears through two-way steering cylinder and turning arm subassembly.
The utility model discloses still relate to a fork truck, including the rear axle that is used for driving the front axle of front wheel and is used for driving the rear wheel, rear axle and/or front axle adopt as above the steering drive axle.
The utility model has the advantages that: the steering drive axle can be only used for a rear axle of a forklift, can also be only used for a front axle of the forklift, and can be simultaneously applied to the front axle and the rear axle of the forklift.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention;
fig. 2 is a schematic front view of embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 5 is a schematic top view of embodiment 1 of the present invention;
FIG. 6 is a cross-sectional view taken along the line C-C of FIG. 5;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 5;
fig. 8 is a schematic bottom view of embodiment 1 of the present invention;
fig. 9 is a left side view schematic structural diagram of embodiment 1 of the present invention;
FIG. 10 is a schematic structural view of one side of the connecting plate of the present invention;
fig. 11 is a schematic view of the structure of the right-turning main view of the present invention;
FIG. 12 is a cross-sectional view taken along the line E-E in FIG. 11;
fig. 13 is a schematic top view of the present invention turning to the right;
fig. 14 is a schematic structural view of the left steering front view of the present invention;
FIG. 15 is a cross-sectional view taken along the direction F-F in FIG. 14;
fig. 16 is a schematic top view of the present invention turning to the left;
fig. 17 is a schematic structural view of the utility model, which is seen from the right direction by 90 degrees;
FIG. 18 is a sectional view taken along the direction G-G in FIG. 17;
fig. 19 is a schematic top view of the present invention turning 90 degrees to the right;
fig. 20 is a schematic structural view of the present invention from the left side at 90 degrees;
FIG. 21 is a sectional view taken along the direction H-H in FIG. 20;
fig. 22 is a schematic top view of the present invention turning 90 degrees to the left;
fig. 23 is a schematic structural view of embodiment 2 of the present invention;
FIG. 24 is a cross-sectional view taken along line I-I of FIG. 23;
fig. 25 is a schematic structural view of embodiment 2 of the present invention turning to the left by 68 degrees;
fig. 26 is a schematic structural view of embodiment 2 of the present invention turning to the right by 68 degrees;
in the figure, 1, an upper box body; 2. a lower supporting plate; 3. a left steering box body; 4. a right steering box body; 5. a differential assembly; 6. a left power output half shaft; 7. a right power output half shaft; 8. a steering cylinder; 9. a left ear panel; 10. a right ear plate; 11. a crank arm; 12. an upper shaft sleeve; 13. a lower shaft sleeve; 14. a fixed pin shaft is turned; 15. a left drive shaft; 16. a right drive shaft; 17. an input power shaft; 18. a primary speed change shaft; 19. a secondary speed change shaft; 20. connecting a flange plate; 21. a first bevel gear; 22. a second bevel gear; 23. a third bevel gear; 24. a fourth bevel gear; 25. a hub reduction shaft; 26. a hub reduction shaft head; 27. inputting a helical gear; 28. a first speed-changing helical gear; 29. a secondary variable speed helical gear; 30. a transmission gear; 31. basin teeth; 32. a bearing; 33. oil sealing; 34. a sealing gland; 35. a guide bar; 36. a hanger plate; 37. connecting the box body; 38. a connecting plate; 39. a hanging shaft; 40. a copper sleeve; 41. a pin shaft; 42. hinging a shaft; 43. a synchronization rod.
Detailed Description
The principles and features of the present invention are described below in conjunction with examples, which are set forth only to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 22, a steering drive axle comprises a housing, a differential power mechanism, a left steering box body 3 and a right steering box body 4, wherein the housing comprises an upper box body 1 and a lower support plate 2, the upper box body is connected with the lower support plate through a connecting piece, and the left steering box body and the right steering box body are both rotatably arranged between the upper box body and the lower support plate;
the differential power mechanism is arranged in the upper box body and comprises a differential mechanism assembly 5, a left power output half shaft 6 and a right power output half shaft 7, the left power output half shaft and the right power output half shaft are arranged in the upper box body through bearings, the left power output half shaft is used as the power input of the left steering box body, the right power output half shaft is used as the power input of the right steering box body, and the left steering box body and the right steering box body are respectively provided with a left power output shaft and a right power output shaft;
and the steering oil cylinder 8 is used for driving the left steering box body and the right steering box body to synchronously rotate.
The left side and the right side of the upper box body are respectively provided with an upper shaft sleeve 12, and the upper parts of the left rotating box body and the right rotating box body are respectively connected with the upper shaft sleeves in a rotatable manner; steering fixed pin shafts 14 are respectively arranged on the left side and the right side of the lower supporting plate, lower shaft sleeves 13 are respectively arranged on the lower portions of the left steering box body and the right steering box body, and the lower shaft sleeves are rotatably connected with the steering fixed pin shafts. The upper shaft sleeve extends out of the bottom of the upper box body, and the top of the steering pin shaft extends out of the upper surface of the lower supporting plate. The rotation of the steering box body between the upper box body and the lower supporting plate is realized through the matching of the upper shaft sleeve, the lower shaft sleeve and the steering fixed pin shaft.
The left and right steering box bodies are respectively provided with a left transmission shaft 15 and a right transmission shaft 16, the upper parts of the left and right transmission shafts are respectively and correspondingly connected with the left and right power output half shafts through bevel gears, and the lower parts of the left and right transmission shafts are respectively and correspondingly connected with the left and right power output shafts through bevel gears. Specifically, the upper parts of the left and right transmission shafts are respectively provided with a first bevel gear 21, the lower parts of the left and right transmission shafts are respectively provided with a second bevel gear 22, the upper part of the upper shaft sleeve is connected with the first bevel gear through a bearing, the upper part of the lower shaft sleeve is connected with the second bevel gear through a bearing, and the left and right power output half shafts are respectively meshed with the first bevel gear through a fourth bevel gear 24; the left and right power output shafts are wheel reduction shafts 25 or half shafts which are rotatably mounted on the left and right steering box bodies, and the wheel reduction shafts are meshed with the second bevel gears through third bevel gears 23. The differential power mechanism transmits power to the left and right transmission shafts through the left and right power output half shafts, then transmits the power to the wheel reduction shafts on the left and right steering boxes through the left and right transmission shafts, and the wheel reduction shafts are provided with wheel reduction shaft heads 26, so that the power is transmitted to wheel hubs mounted on the wheel reduction shaft heads, and the rotation of wheels is realized.
The speed reducing mechanism is used for providing power for the differential power mechanism. The power input is realized and the rotating speed of the input power is adjusted.
The speed reducing mechanism comprises an input power shaft 17, a primary speed changing shaft 18 and a secondary speed changing shaft 19 which are rotatably arranged on the shell, adjacent shafts are in meshing transmission through gears, and the secondary speed changing shaft is in meshing transmission with the differential assembly through a transmission gear. And a connecting flange plate 20 is arranged at the outer end of the input power shaft. An input helical gear 27 is arranged on the input power shaft; a primary speed-changing helical gear 28 is arranged on the primary speed-changing shaft; a secondary speed-changing bevel gear 29 is arranged on the secondary speed-changing shaft; the input bevel gear is meshed with the first-stage speed-changing bevel gear, the first-stage speed-changing bevel gear is meshed with the second-stage speed-changing bevel gear, and a transmission gear 30 meshed with the basin teeth 31 of the differential assembly is arranged on the second-stage speed-changing shaft. In order to meet the requirement of lubricating the gear for power transmission, the gear needs to be in an oil environment, so that the steering box body, the upper box body and the connecting box body need to be sealed. The joint of the shaft end and the shell is provided with a bearing 32, an oil seal 33 and a sealing gland 34. Be convenient for be connected with input power, realize power speed reduction on the one hand, on the other hand with power transmission to the differential mechanism assembly in the upper box body, avoid directly transmitting to the steering box body on influence the steering angle who turns to the box body.
One end of a piston rod of the steering oil cylinder is connected with the left steering box body through a crank arm, and the other end of the piston rod of the steering oil cylinder is connected with the right steering box body through the crank arm. In order to be connected with the steering box body conveniently, a left lug plate 9 and a right lug plate 10 are arranged on the left steering box body and the right steering box body respectively, two ends of a piston rod of the steering oil cylinder are connected with the crank arm respectively, the piston rod is in threaded connection with the crank arm, the steering oil cylinder is convenient to install and maintain, and the crank arm is hinged with the lug plates, so that the left steering box body and the right steering box body are driven synchronously. The steering oil cylinder adopts a bidirectional oil cylinder.
The steering oil cylinder is characterized in that a guide rod 35 is further arranged on the shell, the guide rod is perpendicular to the length direction of the steering oil cylinder, a hanging ring or hanging plate 36 is arranged on the steering oil cylinder, and a guide rod hole matched with the guide rod is formed in the hanging ring or hanging plate. On one hand, the support of the steering oil cylinder is realized, on the other hand, the guide limit can be carried out on the moving range of the steering oil cylinder, and the play of the steering oil cylinder in the axial direction of the oil cylinder is avoided.
The connecting piece is the connecting box body 37 and/or the connecting plate 38 which are used for connecting the upper box body and the lower supporting plate. The connecting piece can be a connecting box body or a connecting plate, or both, so that the upper box body and the lower supporting plate are connected. The connecting box body is arranged on the front side of the upper box body, and can realize the connection of the upper box body and the lower supporting plate on one hand and the installation and sealing of the speed reducing mechanism on the other hand; the connecting plate sets up the rear side of going up the box, the connecting plate realizes going up the box and being connected with the bottom plate on the one hand, and on the other hand can realize the installation location of guide arm and hanging spindle.
The housing is also provided with a hanging shaft 39. The suspension shaft is arranged on the vehicle through a bearing, and can rock along with the vehicle when in a complex road condition, so that the vehicle can turn and drive. The suspension shaft can be arranged on the connecting box body and the connecting plate, so that the installation is convenient, the maintenance is convenient, and the installation of the rotary drive axle on the vehicle is realized. The hanging shaft on the connecting box body is a primary speed change shaft on the connecting box body plate.
The upper parts of the left and right steering box bodies are connected with the upper shaft sleeve through a copper sleeve 40 or a bearing, and the lower parts of the steering box bodies are connected with the steering fixing pin shaft through the copper sleeve or the bearing. The rotation of the left and right steering box bodies between the upper box body and the lower supporting plate is realized through a copper sleeve or a bearing.
The upper parts of the left and right steering box bodies are of cylindrical structures, and the lower parts of the left and right steering box bodies are of square structures. The steering oil cylinder can drive the steering box body conveniently.
The power of a gearbox of the vehicle is transmitted to an input power shaft 17 by being connected with a connecting flange plate 20, a spline is arranged on the input power shaft to drive an input helical gear to move, and the input helical gear is in meshing transmission with a first-stage speed-changing helical gear and then in meshing transmission with a second-stage speed-changing helical gear, so that the total power is converted into upward transmission power through the two-stage transmission; an inner spline is arranged on the secondary speed-changing helical gear to drive a gear shaft to move, a transmission gear on the gear shaft is meshed with a basin tooth 31 of the differential assembly at an angle of 90 degrees to change the power direction, and the basin tooth is arranged on a bracket flange of the differential assembly and drives the differential assembly to move together during movement. The differential assembly rotates through the inner basin teeth, and power is transmitted to the left and right power output half shafts of the spline shafts at the left and right sides. The left and right power output half shafts are connected with a fourth bevel gear through splines on the shaft to transmit power. The fourth bevel gear is meshed with the first bevel gear at an angle of 90 degrees, the power direction is changed, the power is transmitted to the left transmission shaft and the right transmission shaft of the spline shaft downwards, the left transmission shaft and the right transmission shaft drive the second bevel gear to move through the spline, and the second bevel gear is meshed with the third bevel gear to transmit the power; the third bevel gear transmits power to the wheel reduction stub shaft 26 through the splined shaft wheel reduction shaft.
The utility model discloses the wide-angle turns to is realized through the free rotation that turns to the box. A copper sleeve 40 is arranged between the upper end of the steering box body and the welded upper shaft sleeve, and a copper sleeve is arranged between the lower end of the steering box body and the steering fixed pin shaft, so that free rotation is realized. The simultaneous rotation of the wheel-side reduction shafts at the two ends in the same direction is realized by hinging a bidirectional steering oil cylinder and a crank arm through a pin shaft 41 and an ear plate fixed on a steering box body to form a connecting rod mechanism. The bidirectional steering oil cylinder is fixed on the connecting plate and slides along the guide rod. Turning the steering box body to the right by 52 degrees as shown in FIGS. 11-13; turning to the box body to the right by 52 degrees as shown in FIGS. 14-16; turning to the box body to the left by 90 degrees as shown in FIGS. 17-19; turning to the case body to the left by 90 degrees as shown in fig. 20-22; the left and right maximum steering angles can reach 90 degrees.
In embodiment 2, as shown in fig. 23 to 26, a cylinder body of the steering cylinder is hinged to the housing, a piston rod of the steering cylinder is connected to the left steering box body or the right steering box body through a crank arm, and the left steering box body is connected to the right steering box body through a synchronization rod 43. And the left steering box body and the right steering box body are respectively provided with a left ear plate and a right ear plate. The cylinder body of the steering cylinder is hinged with the shell, and particularly can pass through a hinged shaft 42. The free end of a piston rod of the steering oil cylinder is hinged with one end of a connecting lever, the other end of the connecting lever is hinged with a right lug plate of a right steering box body, the left steering box body and the right steering box body are connected through a synchronizing rod, one end of the specific synchronizing rod is hinged with the other right lug plate of the right steering box body through the connecting lever, and the other end of the specific synchronizing rod is hinged with the left lug plate of the left steering box body through the connecting lever. The steering oil cylinder drives the right steering box body to rotate, and the left steering box body and the right steering box body synchronously rotate through the synchronizing rod. The steering oil cylinder adopts a one-way oil cylinder.
The utility model discloses still relate to a fork truck, including the rear axle that is used for driving the front axle of front wheel and is used for driving the rear wheel, rear axle and/or front axle adopt as above the steering drive axle.
The steering drive axle can be only used for a rear axle of a forklift, can also be only used for a front axle of the forklift, and can be simultaneously applied to the front axle and the rear axle of the forklift.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (12)
1. A steering drive axle is characterized by comprising a shell, a differential power mechanism, a left steering box body and a right steering box body, wherein the shell comprises an upper box body and a lower supporting plate;
the differential power mechanism is arranged in the upper box body and comprises a differential mechanism assembly, a left power output half shaft and a right power output half shaft, the left power output half shaft is used as the power input of the left steering box body, the right power output half shaft is used as the power input of the right steering box body, and the left steering box body and the right steering box body are respectively provided with a left power output shaft and a right power output shaft;
the steering oil cylinder is used for driving the left steering box body and the right steering box body to synchronously rotate.
2. The steer-drive axle according to claim 1, wherein said upper housing is provided with an upper bushing on each of the left and right sides thereof, and the upper portions of said left and right turn housings are rotatably connected to said upper bushings, respectively; the left side and the right side of the lower supporting plate are respectively provided with a steering fixed pin shaft, the lower parts of the left steering box body and the right steering box body are respectively provided with a lower shaft sleeve, and the lower shaft sleeves are rotatably connected with the steering fixed pin shafts.
3. The steering drive axle according to claim 2, wherein the left and right steering boxes are respectively provided with a left and right transmission shaft, the upper parts of the left and right transmission shafts are respectively and correspondingly connected with the left and right power output half shafts through bevel gears, and the lower parts of the left and right transmission shafts are respectively and correspondingly connected with the left and right power output shafts through bevel gears.
4. The steer-drive axle according to claim 1, 2 or 3, further comprising a speed reduction mechanism for powering said differential power mechanism.
5. The steer-drive axle according to claim 4, wherein said reduction mechanism comprises an input power shaft, a primary transmission shaft and a secondary transmission shaft rotatably mounted to said housing, wherein adjacent shafts are in meshing transmission with each other through gears, and wherein said secondary transmission shaft is in meshing transmission with said differential assembly through gears.
6. The steer-drive axle according to claim 1, 2 or 3, wherein one end of the piston rod of the steer cylinder is connected to the left steer tank through a crank arm, and the other end of the piston rod of the steer cylinder is connected to the right steer tank through a crank arm.
7. The steer-drive axle according to claim 6, wherein said housing further comprises a guide rod, said guide rod is perpendicular to the length direction of said steer cylinder, said steer cylinder is provided with a suspension ring or a suspension plate, said suspension ring or said suspension plate is provided with a guide rod hole.
8. The steer-drive axle according to claim 1, 2 or 3, wherein the cylinder body of the steer cylinder is connected to the housing, the piston rod of the steer cylinder is connected to the left steer tank or the right steer tank through a crank arm, and the right steer tank or the left steer tank is connected to the left steer tank or the right steer tank through a synchronization rod.
9. The steer-drive axle according to claim 1, 2 or 3, wherein said coupling means is a coupling box and/or a coupling plate for coupling said upper box with said lower carrier.
10. The steer-drive axle according to claim 2 or 3, wherein the upper portion of said steer-box is connected to said upper bushing by a copper bushing or bearing, and the lower portion of said steer-box is connected to said steer-fixing pin shaft by a copper bushing or bearing.
11. Steer-drive axle according to claim 1, 2 or 3, wherein the upper portion of the steer housing is of cylindrical configuration and the lower portion is of square configuration.
12. A forklift truck comprising a front axle for driving front wheels and a rear axle for driving rear wheels, characterized in that the rear axle and/or the front axle employ a steer-drive axle according to any of claims 1-11.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021762194 | 2020-08-21 | ||
| CN2020217621946 | 2020-08-21 |
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| CN212332284U true CN212332284U (en) | 2021-01-12 |
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| CN202022172216.XU Active CN212332284U (en) | 2020-08-21 | 2020-09-28 | Steering drive axle and forklift |
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| CN (1) | CN212332284U (en) |
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