CN216638800U - Parallel four-bar linkage lifting mechanism - Google Patents
Parallel four-bar linkage lifting mechanism Download PDFInfo
- Publication number
- CN216638800U CN216638800U CN202123179039.9U CN202123179039U CN216638800U CN 216638800 U CN216638800 U CN 216638800U CN 202123179039 U CN202123179039 U CN 202123179039U CN 216638800 U CN216638800 U CN 216638800U
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- lifting
- frame
- arms
- cylinder
- oil cylinder
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Forklifts And Lifting Vehicles (AREA)
Abstract
A parallelogram lifting mechanism is provided, wherein a pair of lifting arms and a pair of pull rods form a parallelogram; the bottom ends of the lifting arms and the pull rods are arranged on the connecting shaft, one end of a vehicle frame is arranged on the connecting shaft, a space for accommodating the lifting arms and the pull rods is arranged at the other end of the vehicle frame, and the bedplate is arranged at the top ends of the lifting arms and the pull rods; one end of the lifting oil cylinder is mounted on the frame, the other end of the lifting oil cylinder is connected with the lifting arm, one end of the pitching oil cylinder is mounted on the frame, and the other end of the pitching oil cylinder is connected with the rocker arm arranged at the bottom end of the pull rod; the lifting arm and the pull rod form a parallelogram, so that the lifting frame is simple and reliable, and can be kept in a vertical state all the time or can be lifted by a certain angle unchanged in the lifting process; and a hydraulic system is adopted to provide power for the whole lifting mechanism, so that the labor intensity of undercarriage installation workers is effectively reduced, and the lifting height and the pitching angle of the undercarriage can be accurately controlled.
Description
Technical Field
The utility model relates to the technical field of lifting mechanisms, in particular to a parallel four-bar linkage lifting mechanism.
Background
The traditional installation mode of the landing gear of the airplane is manual lifting, but the landing gear has small installation space and heavy weight, so that the labor intensity of landing gear installation workers is high, and the installation difficulty is high; meanwhile, the lifting mode mechanism in the form of a column or other mechanisms occupies more space, and the excessive structural parts are easy to collide with the landing gear cabin.
SUMMERY OF THE UTILITY MODEL
The present invention provides a parallel four-bar linkage lifting mechanism to solve the above problems in the prior art.
The technical problem solved by the utility model is realized by adopting the following technical scheme:
a parallel four-bar linkage lifting mechanism comprises a pair of lifting arms, a pair of pull rods, a pitching oil cylinder, a rocker arm, a lifting oil cylinder, a frame, a bedplate and a connecting shaft, wherein the lifting arms and the pull rods form a parallelogram, a certain rod in the parallelogram is adjusted, and the rods on the opposite sides are correspondingly adjusted; if the state of a certain rod is maintained unchanged, the rod on the opposite side also maintains the original state unchanged; the bottom ends of the lifting arm and the pull rod are arranged on a connecting shaft, one end of a vehicle frame is arranged on the connecting shaft, a space for accommodating the lifting arm and the pull rod is arranged at the other end of the vehicle frame, and the bedplate is arranged at the top ends of the lifting arm and the pull rod; lifting cylinder one end is installed on the frame, the lifting cylinder other end is connected with the lifting arm, every single move hydro-cylinder one end is installed on the frame, the every single move hydro-cylinder other end is connected with the rocking arm that sets up in the pull rod bottom.
In the utility model, displacement sensors are respectively arranged on the pitching oil cylinder and the lifting oil cylinder.
In the present invention, the lifting arms are disposed outside, and the tie bar is disposed between a pair of the lifting arms.
In the utility model, the lifting arm consists of a lifting section and a supporting section, and the lifting oil cylinder is arranged at the joint of the lifting section and the supporting section.
In the utility model, the lifting section and the supporting section form an integrated structure.
In the utility model, the frame is provided with a mounting seat for mounting the pitching oil cylinder and the lifting oil cylinder.
Has the advantages that: the lifting arm and the pull rod form a parallelogram, so that the lifting frame is simple and reliable, and can be kept in a vertical state all the time or can be lifted by a certain angle unchanged in the lifting process; and a hydraulic system is adopted to provide power for the whole lifting mechanism, so that the labor intensity of undercarriage installation workers is effectively reduced, and the lifting height and the pitching angle of the undercarriage can be accurately controlled.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained by combining the specific drawings.
Referring to fig. 1, the parallelogram-type parallel four-bar linkage lifting mechanism includes a pair of lifting arms 1, a pair of pull rods 2, a pitch cylinder 3, a rocker arm 4, a displacement sensor 5, a lifting cylinder 6, a frame 7, a bedplate 8 and a connecting shaft 9, wherein the pair of lifting arms 1 and the pair of pull rods 2 form a parallelogram, a certain rod therein is adjusted, and the rods on the opposite sides are correspondingly adjusted; if the state of a certain rod is maintained unchanged, the rod on the opposite side also maintains the original state unchanged; the bottom ends of the lifting arm 1 and the pull rod 2 are arranged on a connecting shaft 9, one end of a vehicle frame 7 is arranged on the connecting shaft 9, a space for accommodating the lifting arm 1 and the pull rod 2 is arranged at the other end of the vehicle frame 7, and the bedplate 8 is arranged at the top ends of the lifting arm 1 and the pull rod 2; one end of the lifting oil cylinder 6 is mounted on the frame 7, the other end of the lifting oil cylinder 6 is connected with the lifting arm 1, one end of the pitching oil cylinder 3 is mounted on the frame 7, and the other end of the pitching oil cylinder 3 is connected with the rocker arm 4 arranged at the bottom end of the pull rod 2; meanwhile, displacement sensors 5 are respectively arranged on the pitching oil cylinder 3 and the lifting oil cylinder 6.
In the present embodiment, the lifting arms 1 are disposed outside, and the tie rod 2 is disposed between a pair of lifting arms 1.
In this embodiment, the lifting arm 1 is composed of a lifting section and a supporting section, and the lifting cylinder 6 is disposed at the joint of the lifting section and the supporting section.
In this embodiment, the lifting section and the supporting section are formed into an integrally formed structure.
In the embodiment, the frame 7 is provided with a mounting seat for mounting the pitch cylinder 3 and the lift cylinder 6.
In the embodiment, the pitch cylinder 3 and the lifting cylinder 6 are controlled by a hydraulic system, the lifting cylinder 6 extends outwards to push the lifting arm 1, the bedplate 8 is lifted, and the vertical state or the pitch angle can be kept unchanged in the whole lifting process; if the pitching angle of the bedplate 8 needs to be adjusted, the pitching oil cylinder 3 is only required to be controlled to stretch and retract, the rocker arm 4 is pushed to rotate around the connecting rod, and the pull rod 2 is driven to move, so that the pitching angle of the bedplate 8 is adjusted; the stretching amount of the pitching oil cylinder 3 and the lifting oil cylinder 6 is timely and accurately fed back to an operator through the displacement sensor 5, so that the lifting height and the pitching angle of the bedplate 8 are accurately controlled; when the lifting arm 1 is lifted, if the state of the rocker arm 4 is not changed, the bedplate 8 is always kept in a vertical state or is not changed in a certain pitching angle in the whole lifting process; if the relative angle of the rocker arm 4 is pushed by the pitching cylinder 3 to be adjusted, the relative angle of the bedplate 8 can be changed, and the pitching of the bedplate 8 can be adjusted.
Claims (6)
1. A parallel four-bar linkage lifting mechanism comprises a pair of lifting arms, a pair of pull rods, a pitching oil cylinder, a rocker arm, a lifting oil cylinder, a frame, a bedplate and a connecting shaft, and is characterized in that the lifting arms and the pull rods form a parallelogram; the bottom ends of the lifting arms and the pull rods are arranged on the connecting shaft, one end of a vehicle frame is arranged on the connecting shaft, a space for accommodating the lifting arms and the pull rods is arranged at the other end of the vehicle frame, and the bedplate is arranged at the top ends of the lifting arms and the pull rods; lifting cylinder one end is installed on the frame, the lifting cylinder other end is connected with the lifting arm, every single move hydro-cylinder one end is installed on the frame, the every single move hydro-cylinder other end is connected with the rocking arm that sets up in the pull rod bottom.
2. The parallelogram linkage lifting mechanism as claimed in claim 1, wherein the pitch cylinders and the lift cylinders are respectively provided with a displacement sensor.
3. The parallelogram linkage lifting mechanism of claim 1 wherein the lifting arms are disposed outboard and the drawbar is disposed between a pair of lifting arms.
4. The parallelogram linkage lifting mechanism of claim 1 wherein the lifting arm is comprised of a lifting section and a supporting section, and the lifting cylinder is disposed at the junction of the lifting section and the supporting section.
5. The parallelogram linkage lifting mechanism of claim 4 wherein the lifting section and the support section are integrally formed.
6. The parallelogram linkage lifting mechanism of claim 1 wherein the frame is provided with mounting seats for mounting the pitch rams and the lift rams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123179039.9U CN216638800U (en) | 2021-12-17 | 2021-12-17 | Parallel four-bar linkage lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123179039.9U CN216638800U (en) | 2021-12-17 | 2021-12-17 | Parallel four-bar linkage lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216638800U true CN216638800U (en) | 2022-05-31 |
Family
ID=81741445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123179039.9U Active CN216638800U (en) | 2021-12-17 | 2021-12-17 | Parallel four-bar linkage lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216638800U (en) |
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2021
- 2021-12-17 CN CN202123179039.9U patent/CN216638800U/en active Active
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