CN213472673U - Rear drive steering axle suitable for diesel fork lift truck - Google Patents
Rear drive steering axle suitable for diesel fork lift truck Download PDFInfo
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- CN213472673U CN213472673U CN202021999428.9U CN202021999428U CN213472673U CN 213472673 U CN213472673 U CN 213472673U CN 202021999428 U CN202021999428 U CN 202021999428U CN 213472673 U CN213472673 U CN 213472673U
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Abstract
The utility model discloses a be suitable for diesel fork truck's rear drive steering axle, include: the left side and the right side below the bridge body are respectively symmetrically provided with a steering box body, the outer side of the steering box body is provided with a wheel hub, the middle position inside the bridge body is provided with a differential mechanism, and the outer side of the balance plate positioned at the rear part of the bridge body is provided with a transmission assembly; a steering oil cylinder is arranged between the front balancing plate and the rear balancing plate and provided with a left piston rod and a right piston rod, and the two piston rods are respectively connected with steering box bodies on the left side and the right side of the bridge body and used for driving the steering box bodies to rotate relative to the bridge body and the connecting plate. The utility model discloses a back drive steering axle has realized that the rear wheel can drive and steerable function, can well move domatic and uneven subaerial, has improved work efficiency, has adapted to different operational environment.
Description
Technical Field
The utility model relates to a be suitable for diesel fork truck's rear drive steering axle.
Background
The diesel fork lift truck is a truck powered by an engine and using diesel oil, gasoline or liquefied petroleum gas as fuel, and is one of common carrying vehicles. An important component in a forklift system is called a forklift steering system, the forklift steering system has the function of changing the driving direction of the forklift or keeping the forklift to drive linearly, and the performance of the forklift steering system is directly related to the driving safety, the operation efficiency and the labor intensity of a driver.
Most of the existing forklifts are driven by a front wheel and steered by a rear wheel, most of steering systems adopt a steering axle, the steering axle adopts a transverse oil cylinder, and the steering wheel rotates through a steering knuckle, so that the forklifts realize steering, but the steering axle is in no power driving and has poor off-road performance on sloping fields and uneven ground; still some fork trucks are four-wheel drive that adopts, and the drive structure of its rear steering axle is the duplex universal joint transmission power structure, and the steering angle of rear steering axle is slightly littleer, just needs fork truck to turn to with great turning radius just can make rear steering axle rotate a great angle, has caused fork truck to operate inconveniently, turns to the difficulty.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an operation is light, reliable operation, have the rear drive steering axle who turns to and driving force simultaneously.
To achieve the above object, the present invention adopts the following: a rear drive steer axle for a fork lift truck comprising: the steering box body is arranged on the left side and the right side below the bridge body respectively and symmetrically, and the upper end and the lower end of the steering box body are respectively in rotating connection with the bridge body and the connecting plate;
a differential mechanism is arranged in the middle of the inside of the axle body, and the differential mechanism is provided with a power gear arranged axially, and a left half shaft and a right half shaft which are respectively arranged on the left side and the right side of the differential mechanism;
a transmission assembly is arranged on the outer side of the balance plate positioned at the rear part of the axle body, and is in transmission connection with the power gear and used for driving the left half shaft and the right half shaft on the left side and the right side of the differential mechanism to rotate;
the left half shaft and the transmission shaft of the steering box body positioned on the left side of the axle body, and the right half shaft and the transmission shaft of the steering box body positioned on the right side of the axle body are also in transmission connection by adopting an umbrella tooth structure;
a steering oil cylinder is arranged between the front balancing plate and the rear balancing plate and provided with a left piston rod and a right piston rod, and the two piston rods are respectively connected with steering box bodies on the left side and the right side of the bridge body and used for driving the steering box bodies to rotate relative to the bridge body and the connecting plate.
Preferably, the bevel gear structure is two vertically arranged and intermeshing helical bevel gears.
Preferably, the transmission assembly comprises a housing, the housing is fixedly arranged on the outer side of a balance plate positioned at the rear part of the bridge body, a first gear, a second gear and a third gear which are sequentially meshed are arranged in the housing from bottom to top, a first output shaft is sleeved in the first gear, the first output shaft is rotatably connected with the housing through a bearing, the first output shaft extends to the front part of the bridge body, and a flange plate used for being linked with the output end of the engine is arranged at the tail end of the first output shaft; a support shaft is sleeved in the second gear, and the support shaft is rotatably connected with the shell through a second bearing; and a second output shaft is arranged on the third gear, the second output shaft is rotationally connected with the shell through a bearing, the second output shaft extends to the differential, and the second output shaft and the power gear on the differential are in transmission through meshing.
Preferably, be provided with through-shaft on the balancing plate that is located the bridge front portion, through-shaft and the coaxial setting of back shaft, through the bearing four rotation connection between the balancing plate of bridge front portion.
Preferably, the upper end and the lower end of the steering box body are both provided with thrust bearings, the thrust bearing at the upper end of the steering box body is rotatably connected with the bridge body, and the thrust bearing at the lower end of the steering box body is rotatably connected with the connecting plate.
Preferably, a rotating arm is fixedly arranged on a thrust bearing at the upper end of the steering box body, the rotating arm is hinged with a reversing arm, and the other end of the reversing arm is hinged with a piston rod of the steering oil cylinder.
Preferably, a hub reduction gear is further arranged between the hub and the steering box body.
Compared with the prior art, the utility model has the advantages of: the transmission assembly transmits part of power of the engine to the differential mechanism through the first output shaft, the differential mechanism transmits the power to the wheel hub through the steering box body, the rear wheel can be driven, and the steering box body is controlled to rotate relative to the axle body through the steering oil cylinder, so that the forklift can drive and steer more smoothly. The utility model discloses a back drive steering axle has realized that the rear wheel can drive and steerable function, can well move domatic and uneven subaerial, has improved work efficiency, has adapted to different operational environment.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a rear drive steering axle for a diesel fork lift truck according to the present invention;
fig. 2 is a top view of the internal structure of the present invention;
fig. 3 is a side view of the internal structure of the present invention;
FIG. 4 is a schematic structural view of the transmission assembly of the present invention;
in the figures, the various reference numbers are:
1-axle body, 11-differential mechanism, 12-power gear, 13-left half shaft, 14-right half shaft, 15-bevel gear structure, 2-connecting plate, 3-balance plate, 4-steering box body, 41-transmission shaft, 42-thrust bearing, 43-rotating arm, 5-transmission component, 51-shell, 52-first gear, 53-second gear, 54-third gear, 55-first output shaft, 56-bearing I, 57-supporting shaft, 58-bearing II, 59-second output shaft, 60-bearing III, 6-wheel hub, 61-rotating shaft, 7-steering oil cylinder, 71-piston rod, 72-reversing arm, 8-wheel edge reducer, 9-through shaft and 91-bearing IV, 10-flange plate.
Detailed Description
In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1 to 4, for the utility model provides a rear drive steering axle suitable for diesel fork truck, include: the bridge body 1, the bridge body 1 transversely sets up, and the below parallel arrangement of bridge body 1 has a connecting plate 2, is connected through two balance plates 3 around between bridge body 1 and the connecting plate 2, and the below left and right sides of bridge body 1 symmetry respectively is provided with steering box 4 to steering box 4's upper and lower extreme rotates with bridge body 1, connecting plate 2 respectively and is connected. Welded connection modes are adopted between the bridge body and the two balance plates and between the connecting plate and the two balance plates, so that the strength of the integral structure of the bridge body and the connecting plate is increased, and certain attractiveness is achieved.
A differential 11 is disposed at an inner intermediate position of the axle body 1, and the differential 11 has a power gear 12 disposed axially and a left axle shaft 13 and a right axle shaft 14 disposed on left and right sides of the differential 11, respectively. Because the utility model discloses do not improve differential mechanism, consequently differential mechanism is the prior art who adopts, and differential mechanism is in order to adjust the difference in rotation speed of left and right rear wheel and install.
A transmission assembly 5 is arranged on the outer side of the balance plate 3 positioned at the rear part of the axle body 1, and the transmission assembly 5 is in transmission connection with a power gear 12 of the differential mechanism 11 and used for driving a left half shaft 13 and a right half shaft 14 at the left side and the right side of the differential mechanism 11 to rotate. The transmission assembly is arranged to output part of power of the engine to an input shaft of the differential mechanism, and the differential mechanism drives the left half shaft and the right half shaft to rotate so as to achieve the purpose of driving the left rear wheel and the right rear wheel respectively.
The outer side of the steering box body 4 is provided with a hub 6, the hub 6 is provided with a rotating shaft 61, a transmission shaft 41 is vertically arranged in the steering box body 4, the transmission shaft 41 and the rotating shaft 61 are in transmission connection by adopting a bevel gear structure 15, and the left half shaft 13 and the transmission shaft of the steering box body positioned on the left side of the axle body, and the right half shaft 14 and the transmission shaft of the steering box body positioned on the right side of the axle body are also in transmission connection by adopting the bevel gear structure 15.
The bevel gear structure 15 used here is also known in the art, and is a bevel gear, and more specifically, a spiral bevel gear, which is mainly used to transmit motion and power between two intersecting shafts, and the spiral bevel gear is provided at both ends of the transmission shaft, and a spiral bevel gear is also provided at one end of the left half shaft, the right half shaft, and the rotation shaft, so that the two spiral bevel gears between the left half shaft and the transmission shaft, the right half shaft and the transmission shaft, and the transmission shaft and the rotation shaft are vertically arranged and engaged with each other.
A steering oil cylinder 7 is arranged between the front balance plate 3 and the rear balance plate 3, the steering oil cylinder 7 is provided with a left piston rod 71 and a right piston rod 71, and the two piston rods 71 are respectively connected with the steering box bodies 4 on the left side and the right side of the bridge body 1 and are used for driving the steering box bodies 4 to rotate relative to the bridge body 1 and the connecting plate 2. The steering of the rear wheels and the driving of the rear wheels can be independently carried out, when the forklift runs on a normal road, the steering oil cylinder can not work, and the whole steering of the forklift is controlled only by the steering of the front wheels; when the forklift operates in a soft or uneven ground environment, the whole steering of the forklift cannot be easily controlled only by the steering of the front wheels, and the steering oil cylinder is controlled to work at the moment, so that the steering box body rotates relative to the axle body, the rear wheels synchronously rotate along with the steering box body, and the steering of the rear wheels can be very easily realized.
Specifically, the transmission assembly 5 includes a housing 51, the housing 51 is fixedly disposed on the outer side of the balance plate 3 located at the rear portion of the axle, a first gear 52, a second gear 53, and a third gear 54 which are sequentially engaged with each other are disposed in the housing 51 from bottom to top, a first output shaft 55 is sleeved in the first gear 52, the first output shaft 55 is rotatably connected with the housing 51 through a bearing 56, the first output shaft 55 extends to the front portion of the axle 1, the end of the first output shaft 55 is provided with a flange 10 which is used for linking with the output end of the engine, a supporting shaft 57 is sleeved in the second gear 53, the supporting shaft 57 is rotatably connected with the shell 51 through a second bearing 58, a second output shaft 59 is arranged on the third gear 54, the second output shaft 59 is rotatably connected with the shell 51 through a third bearing 60, the second output shaft 59 extends to the differential, and the second output shaft 59 is in mesh with the power gear 12 on the differential 11.
The engine in the internal combustion forklift is connected with a hydraulic torque converter and is used for increasing the output torque of the engine, then partial power of the engine is transmitted to a first output shaft 55 through a transmission shaft rod, the first output shaft 55 drives a first gear 52 to rotate, the first gear 52 drives a second gear 53 to rotate, the second gear 53 drives a third gear 54 to rotate, a second output shaft 59 connected with the third gear 54 also rotates, the second output shaft 59 is in gear engagement with a power gear 12 on a differential 11 for transmission, so that the differential 11 receives partial power transmitted from the engine, and can drive a left half shaft 13 and a right half shaft 14 to rotate, and the left half shaft 13 is in transmission with a transmission shaft in a steering box at the left side of a bridge body through an umbrella tooth structure, the right half shaft 14 is in transmission with a transmission shaft in a steering box at the right side of the bridge body through an umbrella tooth structure, the transmission shafts 41 in the left and right steering boxes are respectively in transmission with the rotating shafts 61 on the left and right hubs through bevel gear structures, so that when the left half shaft 13 and the right half shaft 14 are driven by the differential 11 to rotate, the transmission shafts 41 in the two steering boxes 4 also rotate, and finally drive the hubs 6 to rotate, which is the principle of rear wheel drive.
In some preferred embodiments, the balance plate 3 at the front of the bridge body 1 is provided with a through shaft 9, the through shaft 9 is coaxially arranged with the support shaft 57, and the through shaft 9 is rotatably connected with the balance plate 3 at the front of the bridge body 1 through a bearing four 91. When fork truck worked under domatic or the uneven environment in ground, whole car can appear rocking to a certain extent, set up the aim at that leads to the axle and fix the pontic on fork truck's whole car frame, can reduce because of rocking of the whole car of fork truck and cause rocking of pontic, avoid the pontic and the whole separation of car of fork truck.
In some preferred embodiments, the steering housing 4 is provided with thrust bearings 42 at both its upper and lower ends, the thrust bearing at the upper end of the steering housing being rotatably connected to the axle body and the thrust bearing at the lower end of the steering housing being rotatably connected to the web. The thrust bearing is the prior art that adopts, and it can bear axial load for the steering box can be smooth carries out axial rotation between the pontic and the connecting plate.
In some preferred embodiments, a rotating arm 43 is fixed on a thrust bearing 42 at the upper end of the steering box body 4, the rotating arm 43 is hinged with a reversing arm 72, and the other end of the reversing arm 72 is hinged with a piston rod 71 of the steering cylinder 7. The steering oil cylinder is transversely arranged between the two balance plates, a piston rod of the steering oil cylinder can only transversely move in the telescopic process, the piston rod of the steering oil cylinder can be more flexibly telescopic by arranging the reversing arm, and the steering range of the steering box body is expanded.
In some preferred embodiments, a hub reduction gear 8 is further provided between the hub 6 and the steering housing 4. The wheel reduction gear described in this embodiment is a conventional wheel reduction gear, and its specific structure is not described herein, but the wheel reduction gear is provided to reduce the frictional force between the wheel hub and the steering housing.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (7)
1. A rear drive steer axle for a fork lift truck comprising: the steering box body is arranged on the left side and the right side below the bridge body respectively and symmetrically, and the upper end and the lower end of the steering box body are respectively in rotating connection with the bridge body and the connecting plate;
a differential mechanism is arranged in the middle of the inside of the axle body, and the differential mechanism is provided with a power gear arranged axially, and a left half shaft and a right half shaft which are respectively arranged on the left side and the right side of the differential mechanism;
a transmission assembly is arranged on the outer side of the balance plate positioned at the rear part of the axle body, and is in transmission connection with the power gear and used for driving the left half shaft and the right half shaft on the left side and the right side of the differential mechanism to rotate;
the left half shaft and the transmission shaft of the steering box body positioned on the left side of the axle body, and the right half shaft and the transmission shaft of the steering box body positioned on the right side of the axle body are also in transmission connection by adopting an umbrella tooth structure;
a steering oil cylinder is arranged between the front balancing plate and the rear balancing plate and provided with a left piston rod and a right piston rod, and the two piston rods are respectively connected with steering box bodies on the left side and the right side of the bridge body and used for driving the steering box bodies to rotate relative to the bridge body and the connecting plate.
2. A rear drive steer axle for a fork lift truck according to claim 1, wherein said bevel gear structure is two vertically disposed and intermeshing helical bevel gears.
3. The rear drive steering axle suitable for the diesel fork lift truck as claimed in claim 2, wherein the transmission assembly comprises a housing, the housing is fixedly arranged on the outer side of the balance plate positioned at the rear part of the axle body, a first gear, a second gear and a third gear which are sequentially meshed are arranged in the housing from bottom to top, a first output shaft is sleeved in the first gear, the first output shaft and the housing are rotatably connected through a bearing, the first output shaft extends to the front part of the axle body, and a flange plate used for being linked with the output end of the engine is arranged at the tail end of the first output shaft; a support shaft is sleeved in the second gear, and the support shaft is rotatably connected with the shell through a second bearing; and a second output shaft is arranged on the third gear, the second output shaft is rotationally connected with the shell through a bearing, the second output shaft extends to the differential, and the second output shaft and the power gear on the differential are in transmission through meshing.
4. The rear drive steering axle for the diesel fork lift truck as set forth in claim 3, wherein a through shaft is provided on the balance plate at the front of the axle body, the through shaft is coaxially provided with the support shaft, and the through shaft is rotatably connected with the balance plate at the front of the axle body by a bearing.
5. The rear drive steering axle for a diesel fork lift truck as set forth in claim 1, wherein thrust bearings are provided at both upper and lower ends of the steering box body, the thrust bearing at the upper end of the steering box body is rotatably connected to the axle body, and the thrust bearing at the lower end of the steering box body is rotatably connected to the link plate.
6. The rear drive steering axle for a diesel fork lift truck as set forth in claim 5, wherein a rotating arm is fixed to a thrust bearing at an upper end of the steering housing, the rotating arm being hingedly connected to a reversing arm, the other end of the reversing arm being hingedly connected to a piston rod of the steering cylinder.
7. The rear drive steering axle for a diesel fork lift truck according to any one of claims 1 to 6, wherein a hub reduction gear is further provided between the hub and the steering box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021999428.9U CN213472673U (en) | 2020-09-14 | 2020-09-14 | Rear drive steering axle suitable for diesel fork lift truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021999428.9U CN213472673U (en) | 2020-09-14 | 2020-09-14 | Rear drive steering axle suitable for diesel fork lift truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213472673U true CN213472673U (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021999428.9U Active CN213472673U (en) | 2020-09-14 | 2020-09-14 | Rear drive steering axle suitable for diesel fork lift truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213472673U (en) |
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2020
- 2020-09-14 CN CN202021999428.9U patent/CN213472673U/en active Active
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