CN220262878U - Electric forklift steering axle structure capable of improving overall performance - Google Patents
Electric forklift steering axle structure capable of improving overall performance Download PDFInfo
- Publication number
- CN220262878U CN220262878U CN202321681166.5U CN202321681166U CN220262878U CN 220262878 U CN220262878 U CN 220262878U CN 202321681166 U CN202321681166 U CN 202321681166U CN 220262878 U CN220262878 U CN 220262878U
- Authority
- CN
- China
- Prior art keywords
- main pin
- seat
- steering axle
- pin seat
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses an electric forklift steering axle structure capable of improving overall performance, which comprises a steering axle body, a hub, a steering knuckle, a double-piston rod oil cylinder, an upper main pin seat, a lower main pin seat and a main pin rotatably arranged between the upper main pin seat and the lower main pin seat, wherein the steering knuckle is fixedly sleeved in the middle of the main pin, two ends of the main pin are respectively and correspondingly rotatably arranged in the upper main pin seat and the lower main pin seat through tapered roller bearings, a bushing is sleeved outside the main pin between the tapered roller bearings and the steering knuckle, an annular step is arranged on the outer wall of one end of the bushing facing the tapered roller bearings, and a three-lip oil seal is sleeved on the annular step and used for sealing one ends of the upper main pin seat and the lower main pin seat. The utility model can improve the axial bearing capacity of the main pin, thereby improving the bearing capacity of the steering axle; in addition, on the basis that can guarantee sealed effect, three lip oil blanket long service life to electric fork truck's wholeness ability has been promoted.
Description
Technical Field
The utility model relates to the technical field of steering axles of electric forklifts, in particular to an electric forklift steering axle structure capable of improving overall performance.
Background
Along with the development of national economy, electric forklifts are used as new energy carrying vehicles in places such as airports, storage, logistics, factories and the like, and are used as steering components of the electric forklifts, and the actual working efficiency of the electric forklifts is often directly influenced by the reasonable design of steering axle structures.
At present, the steering axle structure of the existing electric forklift mainly comprises a steering axle body, a hub, a steering knuckle and a double-piston rod oil cylinder, wherein a connecting rod is rotationally connected between the free end of a piston rod of the double-piston rod oil cylinder and the steering knuckle, an upper main pin seat and a lower main pin seat which are arranged up and down and are hollow in the inner part are fixedly connected with the end part of the steering axle body, a main pin is rotationally arranged between the upper main pin seat and the lower main pin seat through a cylindrical roller bearing or a needle bearing, and the steering knuckle is fixedly sleeved in the middle of the main pin.
In the use process after assembly, the cylindrical roller bearing or the needle roller bearing mainly bears radial load, so that the radial bearing capacity is high, the axial bearing capacity is small, and the main pin mainly bears axial load besides bearing radial load, so that the rotating installation structure adopting the cylindrical roller bearing can cause poor axial bearing capacity of the main pin, and the overall performance of the steering axle is reduced.
In addition, the sealing of the port of the upper main pin seat and the lower main pin seat is generally realized by adopting a framework oil seal, the contact area between the framework oil seal and the inner wall of the main pin seat is large, and the framework oil seal is easy to abrade due to severe friction generated with the inner wall of the main pin seat along with the deflection of the main pin in the long-term use process, so that the sealing effect is weakened, the expected sealing requirement is not met, a new oil seal is required to be replaced, the operation is troublesome, and the installation and the disassembly of the framework oil seal are both relatively inconvenient.
Disclosure of Invention
The utility model aims to overcome the defects and the shortcomings in the prior art, and provides an electric forklift steering axle structure capable of improving the overall performance, which can improve the axial bearing capacity of a main pin so as to improve the bearing capacity of a steering axle; in addition, on the basis that can guarantee sealed effect, three lip oil blanket long service life to promote electric fork truck's wholeness ability.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an electric fork truck steering axle structure that can promote wholeness ability, is including electric fork truck's steering axle body, wheel hub, knuckle and double piston rod hydro-cylinder, rotate between the free end of the piston rod of double piston rod hydro-cylinder and the knuckle and be connected with the connecting rod, the tip fixedly connected with of steering axle body is upper and lower setting and inside hollow main key seat and lower main key seat, the main key is installed in the rotation between upper main key seat and the lower main key seat, the fixed suit of knuckle in the middle part of main key, its characterized in that: the two ends of the main pin are respectively and correspondingly rotatably arranged in the upper main pin seat and the lower main pin seat through tapered roller bearings, a bushing is sleeved outside the main pin between the tapered roller bearings and the knuckle, an annular step is arranged on the outer wall of one end of each bushing, which faces the tapered roller bearings, of each bushing, and a three-lip oil seal is sleeved on each annular step and is used for sealing one ends of the upper main pin seat and the lower main pin seat.
Further, an end cover is fixedly arranged at the other end of the upper main pin seat, which corresponds to the insertion end of the main pin.
Further, an annular sealing cover is fixedly sleeved on the inner side of the pin cap end of the outer part of the main pin, and the outer edge of the annular sealing cover is abutted against the inner wall of the other end of the lower main pin seat.
Furthermore, internal threads are formed on the inner walls of the two ends of the cylinder barrel of the double-piston-rod oil cylinder, external threads are formed on the outer walls of the cylinder covers of the two ends of the double-piston-rod oil cylinder, and the cylinder covers of the two ends are correspondingly installed at the two ends of the cylinder barrel respectively through threaded fit.
Further, the middle part of the cylinder barrel of the double-piston-rod oil cylinder is fixedly welded with an installation seat, and the installation seat is fixedly installed in the middle part of the steering axle body.
Further, an adjusting pad is sleeved outside the kingpin between the bushing and the knuckle.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the tapered roller bearing is adopted to replace a cylindrical roller bearing or a needle bearing, and the main pin is rotatably arranged between the upper main pin seat and the lower main pin seat, so that the axial bearing capacity of the main pin is improved, and the bearing capacity of the steering axle is improved; in addition, the three-lip oil seal is adopted to replace a framework oil seal and is used for sealing one end of the main pin seat, the lip of the three-lip oil seal is in butt joint with the inner wall of the main pin seat, the contact area is small, the three-lip oil seal cannot generate severe friction with the inner wall of the main pin seat in the deflection process along with the main pin, abrasion is not easy to occur, the service life is prolonged on the basis of ensuring the sealing effect, and therefore the overall performance of the electric fork truck is improved.
Drawings
Fig. 1 is a front view of the structure of the present utility model.
Fig. 2 is a top view of the structure of the present utility model.
Fig. 3 is a schematic view of a partial structure of the present utility model.
Fig. 4 is an enlarged schematic view of the structure of the portion a in fig. 3.
Fig. 5 is a schematic structural diagram of a dual piston rod cylinder according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, an electric forklift steering axle structure capable of improving overall performance comprises a steering axle body 1, a hub 2, a steering knuckle 3 and a double-piston rod oil cylinder 4 of the electric forklift, wherein a connecting rod 5 is rotationally connected between the free end of the double-piston rod oil cylinder 4 and the steering knuckle 3, an upper main pin seat 6 and a lower main pin seat 7 which are arranged up and down and hollow in the inner part are fixedly connected with the end part of the steering axle body 1, a main pin 8 is rotationally arranged between the upper main pin seat 6 and the lower main pin seat 7, the steering knuckle 3 is fixedly sleeved in the middle part of the main pin 8, two ends of the main pin 8 are correspondingly rotationally arranged in the upper main pin seat 6 and the lower main pin seat 7 respectively through tapered roller bearings 9, a bushing 10 is sleeved outside the main pin 8 between the tapered roller bearings 9 and the steering knuckle 3, an annular step 11 is arranged on the outer wall of one end of the bushing 10 facing the tapered roller bearings 9, and a three-lip oil seal 12 is sleeved on the annular step for sealing one ends of the upper main pin seat 6 and the lower main pin seat 7.
In the present utility model, the upper main pin seat 6 is fixedly provided with an end cap 13 at the other end corresponding to the insertion end of the main pin 8, thereby sealing the other end of the upper main pin seat 6.
In the utility model, an annular sealing cover 14 is fixedly sleeved on the inner side of the pin cap end of the outer part of a main pin 8, and the outer edge of the annular sealing cover 14 is abutted against the inner wall of the other end of the lower main pin seat 7 so as to seal the other end of the lower main pin seat 7.
In the utility model, internal threads are arranged on the inner walls of two ends of a cylinder 41 of a double-piston-rod cylinder 4, external threads are arranged on the outer walls of cylinder covers 42 at two ends of the double-piston-rod cylinder 4, and the cylinder covers 42 at two ends are respectively and correspondingly arranged at two ends of the cylinder 41 through threaded fit.
In addition, the middle part of the cylinder 41 of the double-piston-rod cylinder 4 is fixedly welded with a mounting seat 16, and the mounting seat 16 is fixedly arranged at the middle part of the steering axle body 1.
Therefore, the two end cylinder covers 42 are locked at the two ends of the cylinder 41 through threaded fit, and the mounting seat 16 is directly welded at the middle part of the cylinder 41, so that the flatness and consistency of the mounting surface of the double-piston-rod cylinder 4 are ensured, and the problem that an adjusting pad is required to be arranged for adjustment during assembly caused by a gap between the two end cylinder covers and the cylinder due to the traditional double-piston-rod cylinder structure is avoided.
In the present utility model, an adjusting pad 15 is fitted between the bush 10 and the knuckle 3 on the outside of the kingpin 8, thereby adjusting the clearance between the bush 10 and the knuckle 3.
The utility model is further described below with reference to the accompanying drawings:
in the use process after assembly, the tapered roller bearing 9 replaces the traditional cylindrical roller bearing or needle roller bearing, and the main pin 8 is rotatably arranged between the upper main pin seat 6 and the lower main pin seat 7, so that the axial bearing capacity of the main pin 8 can be obviously improved, and the bearing capacity of a steering axle is improved.
In addition, because the traditional skeleton oil seal is replaced by the three-lip oil seal 12, one ends of the upper main pin seat 6 and the lower main pin seat 7 are sealed, the three-lip oil seal 12 is in contact with the inner walls of the upper main pin seat 6 and the lower main pin seat 7, and the contact area is small, so that the three-lip oil seal 12 cannot generate severe friction with the inner walls of the upper main pin seat 6 and the lower main pin seat 7 in the deflection process along with the main pin 8, abrasion is not easy to occur, and the service life is prolonged on the basis of ensuring the sealing effect.
Therefore, the utility model can improve the overall performance of the electric forklift.
Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments described in the disclosure as a whole may be combined appropriately to form other embodiments that will be apparent to those skilled in the art.
Therefore, the above description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (6)
1. The utility model provides an electric fork truck steering axle structure that can promote wholeness ability, is including electric fork truck's steering axle body, wheel hub, knuckle and double piston rod hydro-cylinder, rotate between the free end of the piston rod of double piston rod hydro-cylinder and the knuckle and be connected with the connecting rod, the tip fixedly connected with of steering axle body is upper and lower setting and inside hollow main key seat and lower main key seat, the main key is installed in the rotation between upper main key seat and the lower main key seat, the fixed suit of knuckle in the middle part of main key, its characterized in that: the two ends of the main pin are respectively and correspondingly rotatably arranged in the upper main pin seat and the lower main pin seat through tapered roller bearings, a bushing is sleeved outside the main pin between the tapered roller bearings and the knuckle, an annular step is arranged on the outer wall of one end of each bushing, which faces the tapered roller bearings, of each bushing, and a three-lip oil seal is sleeved on each annular step and is used for sealing one ends of the upper main pin seat and the lower main pin seat.
2. The electric forklift steering axle structure capable of improving overall performance according to claim 1, wherein: and an end cover is fixedly arranged at the other end of the upper main pin seat, which corresponds to the insertion end of the main pin.
3. The electric forklift steering axle structure capable of improving overall performance according to claim 1, wherein: the outer part of the main pin is fixedly sleeved with an annular sealing cover at the inner side of the pin cap end of the main pin, and the outer edge of the annular sealing cover is abutted against the inner wall of the other end of the lower main pin seat.
4. The electric forklift steering axle structure capable of improving overall performance according to claim 1, wherein: internal threads are formed on the inner walls of two ends of a cylinder barrel of the double-piston-rod oil cylinder, external threads are formed on the outer walls of cylinder covers of two ends of the double-piston-rod oil cylinder, and the cylinder covers of the two ends are correspondingly installed at two ends of the cylinder barrel respectively through threaded fit.
5. The electric forklift steering axle structure capable of improving overall performance of claim 4, wherein: the middle part of the cylinder barrel of the double-piston-rod oil cylinder is fixedly welded with a mounting seat, and the mounting seat is fixedly arranged in the middle part of the steering axle body.
6. The electric forklift steering axle structure capable of improving overall performance according to claim 1, wherein: an adjusting pad is sleeved outside the kingpin between the bushing and the steering knuckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321681166.5U CN220262878U (en) | 2023-06-29 | 2023-06-29 | Electric forklift steering axle structure capable of improving overall performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321681166.5U CN220262878U (en) | 2023-06-29 | 2023-06-29 | Electric forklift steering axle structure capable of improving overall performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220262878U true CN220262878U (en) | 2023-12-29 |
Family
ID=89302218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321681166.5U Active CN220262878U (en) | 2023-06-29 | 2023-06-29 | Electric forklift steering axle structure capable of improving overall performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220262878U (en) |
-
2023
- 2023-06-29 CN CN202321681166.5U patent/CN220262878U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220262878U (en) | Electric forklift steering axle structure capable of improving overall performance | |
| CN105416332A (en) | Hollow axle bridge structure and light wheel pair | |
| CN212360497U (en) | Combined bearing for automobile steering knuckle | |
| CN201539564U (en) | Combined heavy truck hub oil seal | |
| CN201220580Y (en) | Steering drive axle | |
| CN210212520U (en) | Steering axle for forklift | |
| CN201901173U (en) | Novel transition arm | |
| CN209535201U (en) | A kind of knuckle | |
| CN208993754U (en) | The bearing structure of steering and driving axle | |
| CN211994996U (en) | Forklift steering axle | |
| CN207683243U (en) | All-terrain Forklift steering drive axle assembly | |
| CN220721182U (en) | Thrust washer structure of axle knuckle | |
| CN203046748U (en) | Front axle assembly of mine truck | |
| CN208747485U (en) | A kind of autobalance overhead crane with electric hoists trolley | |
| CN208248293U (en) | A kind of automobile front axle steering knuckle connecting structure | |
| CN215904591U (en) | Lithium electricity steer axle wheel limit structure | |
| CN205737692U (en) | A kind of automobile front axle knuckle | |
| CN212765551U (en) | Maintenance-free metal and nylon composite shaft sleeve | |
| CN205706000U (en) | Semifloating axle shaft, externally-engaged cylindrical gear portal drive axle take turns limit structure | |
| CN217892405U (en) | Combined front axle of forklift gantry | |
| CN220198971U (en) | Integral steering electric drive axle | |
| CN213623145U (en) | Parking brake suitable for small forklift | |
| CN216618261U (en) | Novel automobile wheel hub bearing with ring groove | |
| CN208827489U (en) | A kind of German-style semitrailer axle | |
| CN220615367U (en) | Steering axle wheel limit assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |