CN112141217A - Supporting leg unfolding and folding chassis and engineering machinery - Google Patents
Supporting leg unfolding and folding chassis and engineering machinery Download PDFInfo
- Publication number
- CN112141217A CN112141217A CN202011190482.3A CN202011190482A CN112141217A CN 112141217 A CN112141217 A CN 112141217A CN 202011190482 A CN202011190482 A CN 202011190482A CN 112141217 A CN112141217 A CN 112141217A
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- frame
- chassis
- supporting leg
- leg
- telescopic driving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/14—Understructures, i.e. chassis frame on which a vehicle body may be mounted of adjustable length or width
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a supporting leg unfolding and folding chassis and an engineering machine, wherein the supporting leg unfolding and folding chassis comprises a chassis frame, a plurality of supporting leg frame groups, a tire frame, a plurality of telescopic driving devices and tires; each support leg group comprises an inner support leg frame and an outer support leg frame, wherein the inner support leg frame and the outer support leg frame are arranged in parallel and are perpendicular to the plane of the chassis frame; one end of the telescopic driving device is hinged on the chassis frame, and the other end of the telescopic driving device is hinged with the inner supporting leg frame. The supporting leg unfolding and folding chassis provided by the invention is characterized in that a four-bar linkage mechanism is formed by the chassis frame, the tire frame, the inner supporting leg frame and the outer supporting leg frame, the inner supporting leg frame rotates around the chassis frame under the pushing of the telescopic driving device so as to drive the outer supporting leg frame and the tire frame to synchronously swing, the angle between the tire on the tire frame and the moving direction of the chassis is always unchanged in the swinging process without adjustment and control, only the action of the telescopic driving device needs to be controlled, the whole control structure and process are greatly simplified, and the production cost is obviously reduced.
Description
Technical Field
The invention relates to the technical field of mechanical engineering, in particular to a supporting leg folding and unfolding chassis and engineering machinery.
Background
The high-altitude operation vehicle is a special vehicle for transporting workers and using equipment to high altitude to install, maintain and clean equipment located at the high altitude, has the advantages of good operation performance, high efficiency and the like compared with the traditional operation modes of building scaffolds, ladders and the like, and is widely applied to the infrastructure industries of electric power, traffic communication and the like at present. In actual operation, in order to ensure that the whole vehicle does not tip over in a working state, the wheel track of the chassis is required to be larger, the wheel track of the chassis of the machine is required to be made into an adjustable structure, the wheel track of the support legs is larger when the support legs are unfolded in operation, and the support legs are folded to reduce the wheel track and occupy no space when the support legs are transported or parked.
In order to solve the problems, as shown in fig. 1, in patent publication No. CN106395699A, an aerial work platform telescopic walking frame is provided, in which four legs 3 are provided on an underframe 2, one end of each leg 3 rotates around a hinge point on the underframe 2, and a telescopic cylinder 1 is provided between the legs at two sides to realize the expansion and contraction of the four legs; meanwhile, the tires 4 at the other ends of the supporting legs synchronously swing in an arc manner to cause deflection of the tires, and in order to ensure that the angles of the tires 4 are not changed, the steering cylinders 5 of the tires 4 are synchronously adjusted to realize normal running. However, in the unfolding and folding mode, the telescopic oil cylinders 1 among the supporting legs and the four steering oil cylinders 4 among the supporting legs and the tires must be controlled to work synchronously, a fine and complex control device is needed, the structure is complex, the price is high, and the production cost is increased.
Disclosure of Invention
The invention mainly aims to provide a supporting leg unfolding and folding chassis and engineering machinery, and aims to solve the technical problems.
In order to achieve the above object, the present invention provides a leg expanding and contracting chassis comprising:
a chassis frame;
the supporting leg frame set comprises an inner supporting leg frame and an outer supporting leg frame, the inner supporting leg frame and the outer supporting leg frame are arranged in parallel and are perpendicular to the plane of the chassis frame, and one end of the inner supporting leg frame and one end of the outer supporting leg frame are respectively pivoted on the chassis frame;
a plurality of telescopic driving devices, wherein one end of each telescopic driving device is hinged on the chassis frame, and the other end of each telescopic driving device is hinged with the inner supporting leg frame;
the tyre frame is respectively pivoted with the other end of the inner supporting leg frame and the other end of the outer supporting leg frame and is parallel to the central axis of the chassis frame;
the tire is pivoted on the tire frame.
Preferably, the support leg rack assembly further comprises a fixing shaft, and the fixing shaft penetrates through the chassis frame and the support leg rack assembly.
Preferably, the tire frame further comprises a connecting shaft, and the connecting shaft is arranged through the leg frame group and the tire frame.
Preferably, the tire further comprises steering oil cylinders, and the steering oil cylinders are respectively connected with the tire frame and the tire.
Preferably, the leg expanding and retracting chassis comprises four leg frame groups and four telescopic driving devices, and the telescopic driving devices are respectively and evenly arranged on two sides of the chassis frame.
Preferably, the two telescopic driving devices arranged on the same side are arranged on the chassis frame in a crossed manner.
Preferably, the chassis frame further comprises a positioning pin shaft, pin shaft holes are correspondingly formed in the inner supporting leg frame, the outer supporting leg frame and the chassis frame, and the positioning pin shaft is matched with the pin shaft holes.
Preferably, the telescopic driving device is one of a hydraulic oil cylinder, an air cylinder and a gear rack mechanism.
The invention also provides engineering machinery which comprises a telescopic mechanical arm and a supporting leg unfolding and folding chassis, wherein the supporting leg unfolding and folding chassis is the supporting leg unfolding and folding chassis, and the telescopic mechanical arm is arranged on the supporting leg unfolding and folding chassis.
In the technical scheme of the invention, the supporting leg unfolding and folding chassis comprises a chassis frame, a plurality of supporting leg frame groups, a tire frame, a plurality of telescopic driving devices and tires; each supporting leg group comprises an inner supporting leg frame and an outer supporting leg frame, the inner supporting leg frame and the outer supporting leg frame are arranged in parallel and are perpendicular to the plane where the chassis frame is located, and one end of the inner supporting leg frame and one end of the outer supporting leg frame are respectively pivoted on the chassis frame; the tyre frame is respectively pivoted with the other end of the inner supporting leg frame and the other end of the outer supporting leg frame; one end of the telescopic driving device is hinged on the chassis frame, and the other end of the telescopic driving device is hinged with the inner supporting leg frame. The supporting leg unfolding and folding chassis provided by the invention is based on the principle of a parallelogram link mechanism, a four-link mechanism is formed by a chassis frame, a tire frame, an inner supporting leg frame and an outer supporting leg frame, the inner supporting leg frame rotates around the chassis frame under the pushing of a telescopic driving device so as to drive the outer supporting leg frame and the tire frame to synchronously swing, the angle between the tire on the tire frame and the moving direction of the chassis is always unchanged in the swinging process without adjustment and control, only the action of the telescopic driving device needs to be controlled, the whole control structure and process are greatly simplified, and the production cost can be obviously reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of a prior art retractable walking frame;
FIG. 2 is a partially disassembled view of the structure of an embodiment of the leg expanding and contracting chassis of the present invention;
FIG. 3 is a schematic structural view of a foldable chassis with legs according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the leg-expanding chassis in an expanded state according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
40 | Tyre for vehicle wheels |
| 2 | |
51 | Inner supporting leg frame |
| 3 | Supporting |
52 | Outer supporting |
| 4 | Tyre for |
60 | Fixed |
| 5 | |
70 | Connecting |
| 10 | |
80 | |
| 20 | |
90 | |
| 30 | Tyre frame |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a supporting leg unfolding and folding chassis.
Referring to fig. 2 to 4, in an embodiment of the present invention, the leg folding chassis includes a chassis frame 10, a plurality of leg frame sets, a plurality of telescopic driving devices 20, a tire frame 30, and a tire 40. Wherein each of the leg support sets comprises an inner leg support 51 and an outer leg support 52, the inner leg support 51 and the outer leg support 52 are arranged in parallel and are perpendicular to the plane of the chassis frame 10, and one end of the inner leg support 51 and one end of the outer leg support 52 are respectively pivoted on the chassis frame 10; one end of the telescopic driving device 20 is hinged on the chassis frame 10, and the other end is hinged on the inner supporting leg frame 51; the tire frame 30 is respectively pivoted with the other end of the inner supporting leg 51 and the other end of the outer supporting leg 52, and the tire frame 30 is parallel to the central axis of the chassis frame 10; the tire 40 is pivotally attached to the tire frame 30.
The supporting leg unfolding and folding chassis in the embodiment is based on the principle of a parallelogram link mechanism, and the other two opposite sides are still always kept parallel while the two opposite sides are swung. Specifically, the chassis frame 10, the tire frame 30, the inner leg support 51 and the outer leg support 52 form a parallelogram four-bar linkage mechanism, under the pushing of the telescopic driving device 20, the inner leg support 51 rotates around the chassis frame 10, so as to drive the outer leg support 52 and the tire frame 30 to synchronously swing, wherein the inner leg support 51 and the outer leg support 52 swing as two opposite sides in the parallelogram and still keep parallel, the chassis frame 10 and the tire frame 30 also keep parallel as the other two opposite sides in the parallelogram in the swinging process, and particularly, the angle between the tire 40 on the tire frame 30 and the chassis moving direction is always unchanged in the swinging process without adjustment and control. Compared with the prior similar technology in fig. 1, the embodiment only needs to control the telescopic driving device 20, and does not need to synchronously control the swing angle of the tire 40, so that the whole control structure and process are greatly simplified, and the production cost can be obviously reduced.
Specifically, as shown in fig. 2, the leg-expanding chassis in this embodiment further includes a fixing shaft 60 and a connecting shaft 70, the fixing shaft 60 is inserted into the chassis frame 10 and the leg frame set, and the connecting shaft 70 is inserted into the leg frame set and the tire frame 30.
As a preferred embodiment, the support leg folding and unfolding chassis further comprises a steering cylinder 80, the steering cylinder 80 is respectively connected with the tire frame 30 and the tire 40, and the steering cylinder 80 is used for controlling the swing angle of the tire 40 when the chassis is steered, so that the turning radius of the chassis can be greatly reduced, and the site adaptability of the chassis is improved.
As a preferred embodiment, the leg-expanding chassis comprises four leg frame sets and four corresponding telescopic driving devices 20, wherein the telescopic driving devices 20 are respectively and equally arranged on two sides of the chassis frame 10.
Further, the two telescopic driving devices 20 arranged on the same side are crosswise arranged on the chassis frame 10, as shown in fig. 2, the two telescopic driving devices 20 on the same side of the chassis frame 10 are crosswise hinged on the chassis frame 10, that is, the left telescopic driving device 20 is connected with the right inner supporting leg frame 51, and the right telescopic driving device 20 is connected with the left inner supporting leg frame 51, similar to the X-shaped structural layout, so that the whole structure can be more compact.
As a preferred embodiment, the supporting leg unfolding and folding chassis further includes a positioning pin shaft 90, pin shaft holes are correspondingly formed on the inner supporting leg 51, the outer supporting leg 52 and the chassis frame 10, and the positioning pin shaft 90 is adapted to the pin shaft holes and used for fixing the supporting leg assembly when the supporting leg assembly is folded and unfolded in place.
Specifically, the telescopic driving device 20 is one of a hydraulic cylinder, an air cylinder, and a rack and pinion mechanism. In the embodiment, a currently common hydraulic oil cylinder is preferably used as the telescopic driving device 20, and the technology is mature and stable.
The invention also provides engineering machinery which comprises a telescopic mechanical arm and a supporting leg unfolding and folding chassis, wherein the supporting leg unfolding and folding chassis is the supporting leg unfolding and folding chassis, and the telescopic mechanical arm is arranged on the supporting leg unfolding and folding chassis. The specific structure of the support leg folding chassis refers to the above embodiments, and since the engineering machine adopts all the technical solutions of all the above embodiments, the engineering machine at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A leg spreading and retracting chassis, comprising:
a chassis frame;
the supporting leg frame set comprises an inner supporting leg frame and an outer supporting leg frame, the inner supporting leg frame and the outer supporting leg frame are arranged in parallel and are perpendicular to the plane of the chassis frame, and one end of the inner supporting leg frame and one end of the outer supporting leg frame are respectively pivoted on the chassis frame;
a plurality of telescopic driving devices, wherein one end of each telescopic driving device is hinged on the chassis frame, and the other end of each telescopic driving device is hinged with the inner supporting leg frame;
the tyre frame is respectively pivoted with the other end of the inner supporting leg frame and the other end of the outer supporting leg frame and is parallel to the central axis of the chassis frame;
the tire is pivoted on the tire frame.
2. The leg expanding and retracting chassis of claim 1, further comprising a fixed shaft, wherein the fixed shaft is inserted into the chassis frame and the leg frame set.
3. The leg expanding and contracting chassis according to claim 1, further comprising a connecting shaft, wherein the connecting shaft is arranged through the leg frame set and the tire frame.
4. The leg expanding and retracting chassis of claim 1, further comprising steering cylinders respectively connected to the tire frame and the tire.
5. The leg spreading and retracting chassis of claim 1, comprising four leg rest groups and four telescopic driving means, the telescopic driving means being respectively provided on both sides of the chassis frame on average.
6. The leg spreading and retracting chassis of claim 5, wherein the two telescopic driving devices disposed at the same side are disposed across the chassis frame.
7. The leg expanding and retracting chassis according to claim 1, further comprising a positioning pin shaft, wherein the inner leg support, the outer leg support and the chassis frame are correspondingly provided with pin shaft holes, and the positioning pin shaft is matched with the pin shaft holes.
8. The leg spreading chassis according to any one of claims 1 to 7, wherein the telescopic driving means is one of a hydraulic cylinder, an air cylinder, a rack and pinion mechanism.
9. An engineering machine, comprising a telescopic mechanical arm and a support leg unfolding and folding chassis, wherein the support leg unfolding and folding chassis is the support leg unfolding and folding chassis as claimed in any one of claims 1 to 8, and the telescopic mechanical arm is arranged on the support leg unfolding and folding chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011190482.3A CN112141217A (en) | 2020-10-30 | 2020-10-30 | Supporting leg unfolding and folding chassis and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011190482.3A CN112141217A (en) | 2020-10-30 | 2020-10-30 | Supporting leg unfolding and folding chassis and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112141217A true CN112141217A (en) | 2020-12-29 |
Family
ID=73953697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011190482.3A Pending CN112141217A (en) | 2020-10-30 | 2020-10-30 | Supporting leg unfolding and folding chassis and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112141217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013675A (en) * | 2021-12-02 | 2022-02-08 | 航天神舟飞行器有限公司 | Automatic winding and unwinding devices of unmanned aerial vehicle |
| CN115650132A (en) * | 2022-12-09 | 2023-01-31 | 临工重机股份有限公司 | Aerial work platform support leg moving method and aerial work platform |
-
2020
- 2020-10-30 CN CN202011190482.3A patent/CN112141217A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013675A (en) * | 2021-12-02 | 2022-02-08 | 航天神舟飞行器有限公司 | Automatic winding and unwinding devices of unmanned aerial vehicle |
| CN115650132A (en) * | 2022-12-09 | 2023-01-31 | 临工重机股份有限公司 | Aerial work platform support leg moving method and aerial work platform |
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