CN112125240A - Multifunctional operation platform, aerial operation vehicle and control method thereof - Google Patents
Multifunctional operation platform, aerial operation vehicle and control method thereof Download PDFInfo
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- 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
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Abstract
The invention discloses a multifunctional operation platform, an aerial operation vehicle and a control method thereof, wherein the aerial operation vehicle comprises a fixed platform, a movable platform and a rotating mechanism; the movable platform is arranged on the fixed platform through a lifting mechanism and can lift relative to the fixed platform; the fixed platform is connected with the leveling system through the rotating mechanism, and is controlled to rotate within a certain angle range along the horizontal plane direction through the stretching of the leveling oil cylinder; the movable platform is provided with a telescopic mechanism, and the size of the movable platform can be adjusted through the telescopic mechanism; the fixed platform metal rubber shock absorber is arranged on the upper surface of the fixed platform, and when the movable platform is lowered to the lowest position, the fixed platform metal rubber shock absorber is located between the fixed platform and the lower surface of the movable platform. The lifting mechanism is provided with a metal rubber vibration absorber and a metal rubber shaft sleeve and is used for absorbing vibration of the moving platform in the lifting process.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a multifunctional operation platform, an aerial operation vehicle and a control method of the aerial operation vehicle.
Background
The high-altitude operation vehicle is a special engineering machinery vehicle for lifting workers and operating equipment to quickly and accurately reach a preset position for operation, and is an important classification in engineering machinery development. The working bucket is used as a platform for workers to carry out high-altitude operation, and the stability and the safety of the working bucket are directly related to the safety of the operators, so that the leveling of the working platform is one of the key technologies for the research of high-altitude operation vehicles. The aerial work platform needs to bear a plurality of working personnel or more tools in certain specific occasions, the area of the existing aerial work platform is limited, the number of people and tools to be carried is limited, if the area of the platform is designed to be too large, a large space is occupied, and the size design standard of the whole vehicle is not met. When the high-altitude operation vehicle has a larger operation height, in order to ensure the operation safety, the control program can limit the amplitude variation or the telescopic action of the arm support. Meanwhile, the working platform is greatly influenced by the vibration of a lower vehicle system, and the comfort in the platform is reduced under the condition of no vibration reduction.
At present, a fixed working platform is generally adopted by an aerial work vehicle, and the adjustment of the working position completely depends on the amplitude variation and the expansion of an arm support and the rotation of a rotary table to control a handle.
The prior art has the following defects: 1) a vibration damper is not arranged between the working platform and the arm support, and the working platform is greatly influenced by the vibration and the shaking of the arm support;
2) the working area of the platform is fixed, and the size of a carrying tool and the operation in a narrow space are limited;
3) when the high-altitude operation vehicle has a larger operation height, in order to ensure the operation safety, the control program can limit the movement of the arm support, and the operation range is limited.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a multifunctional operation platform, an aerial operation vehicle and a control method thereof.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
in a first aspect, a multifunctional working platform is provided, which comprises a fixed platform, a movable platform and a rotating mechanism;
the movable platform is arranged on the fixed platform through a lifting mechanism and can lift relative to the fixed platform;
the fixed platform is connected with the leveling system through the rotating mechanism, and is controlled to rotate within a certain angle range along the horizontal plane direction through the stretching of the leveling oil cylinder;
the movable platform is provided with a telescopic mechanism, and the size of the movable platform can be adjusted through the telescopic mechanism;
and the upper surface of the fixed platform is provided with a fixed platform metal rubber shock absorber, and when the movable platform is lowered to the lowest position, the fixed platform metal rubber shock absorber is positioned between the fixed platform and the lower surface of the movable platform.
In some embodiments, the lifting mechanism comprises a lifting cylinder, the lifting cylinder comprises a cylinder rod, a tray and a lifting cylinder metal rubber shock absorber, the bottom end of the cylinder rod is fixed on the fixed platform, and the top end of the cylinder rod is fixedly provided with the tray for supporting and pushing the bottom of the movable platform in the lifting action;
furthermore, the upper surface of the tray is provided with a lifting oil cylinder metal rubber shock absorber for absorbing shock of the moving platform in the lifting process.
In some embodiments, the cylinder rod is vertically disposed and the tray is horizontally disposed;
in some embodiments, the cylinder rod is located in a central position of the fixed platform;
in some embodiments, the tray is a disc structure, and the tray and the oil cylinder rod are arranged coaxially.
In some embodiments, the multifunctional operation platform further comprises a guide mechanism, the guide mechanism comprises a guide post and a metal rubber shaft sleeve, the guide post is fixedly connected to the fixed platform in the vertical direction, the metal rubber shaft sleeve is fixedly connected with one side of the movable platform, the metal rubber shaft sleeve is arranged on the guide post in a sleeved mode, the guide post can slide relatively to lift, and meanwhile the movable platform is damped.
Furthermore, an upper limit mechanism and a lower limit mechanism are arranged on the guide post, and the metal rubber shaft sleeve is movably limited between the upper limit mechanism and the lower limit mechanism of the guide post;
in some embodiments, the guide posts comprise two guide posts arranged parallel to each other.
In some embodiments, the movable platform is of a bilateral symmetry structure, wherein the middle part of the rear side of the movable platform is mounted on the guide post through a metal rubber shaft sleeve, and the middle part of the rear side of the movable platform is located above the lifting oil cylinder.
In some embodiments, the telescoping mechanism comprises a right extension mechanism, a forward extension mechanism, a left extension mechanism, a right side follower mechanism, a left side follower mechanism, a right extension hydraulic cylinder, a forward extension hydraulic cylinder, a left extension hydraulic cylinder;
the right stretching mechanism stretches out or retracts towards the right side within a certain range through a right stretching hydraulic oil cylinder stretching control braking platform; the forward extending mechanism extends forwards or retracts forwards within a certain range through a forward extending hydraulic oil cylinder telescopic control brake platform; the left stretching mechanism stretches out or retracts towards the left side within a certain range through a left stretching hydraulic oil cylinder stretching control braking platform;
the right side follow-up mechanism is connected with the right stretching mechanism and the forward stretching mechanism and is used for realizing that the movable platform is always kept closed when extending or retracting in all directions; the left side follow-up mechanism is connected with the left extension mechanism and the front extension mechanism and used for realizing that the movable platform always keeps closed when extending or retracting in all directions.
Furthermore, the right extension hydraulic oil cylinder, the forward extension hydraulic oil cylinder and the left extension hydraulic oil cylinder are all arranged in the horizontal direction and are arranged on the bottom frame of the movable platform, wherein one end of the right extension hydraulic oil cylinder is fixed on the rear fixing mechanism of the movable platform, and the other end of the right extension hydraulic oil cylinder is connected to the right extension mechanism; one end of the left extension hydraulic oil cylinder is fixed on the rear fixing mechanism, and the other end of the left extension hydraulic oil cylinder is connected to the left extension mechanism; one end of the forward extending hydraulic oil cylinder is fixed on the rear fixing mechanism, and the other end of the forward extending hydraulic oil cylinder is connected to the forward extending mechanism;
in some embodiments, the right side follow-up mechanism, the left side follow-up mechanism and the rear fixing mechanism are all hollow tubular structures, two ends of the right side stretching mechanism are respectively movably sleeved in the right side follow-up mechanism and the rear fixing mechanism, two ends of the front stretching mechanism are respectively movably sleeved in the right side follow-up mechanism and the left side follow-up mechanism, and two ends of the left side stretching mechanism are respectively movably sleeved in the left side follow-up mechanism and the rear fixing mechanism.
In a second aspect, an aerial work vehicle is provided, comprising the multifunctional work platform.
In a third aspect, a method for controlling a multifunctional work platform is provided, including:
acquiring control signals of the amplitude variation, the rotation and the telescopic handle of the arm support,
in response to the judgment that the control signal of the amplitude-variable handle of the arm support is larger than the arm support motion starting threshold value, namely that the arm support is in a motion state, sending an instruction to control the platform to be prohibited from carrying out adjustment action;
in response to the judgment that the control signal of the luffing handle of the arm support is smaller than the arm support motion starting threshold value, namely the arm support is in a static state, information of a platform oil cylinder telescopic sensor and a rotation angle sensor is obtained, and the telescopic amount of the oil cylinder and the horizontal rotation angle of the platform are obtained;
responding to the fact that the telescopic amount of the oil cylinder is located in the corresponding set range, sending an instruction to control the platform to perform corresponding movable platform size and lifting adjustment actions according to the telescopic handle control signal; or, in response to the fact that the telescopic quantity of the oil cylinder exceeds the corresponding set range, sending an instruction to control alarm, automatically adjusting the oil cylinder to a critical set value, and simultaneously finishing the action;
responding to the fact that the horizontal rotation angle of the platform is within a set range, and sending an instruction to control the platform to perform corresponding rotation according to a rotation handle control signal; or, in response to the fact that the horizontal rotation angle of the platform exceeds the set range, sending an instruction to control alarming, automatically rotating the platform to a critical set value, and simultaneously finishing the action.
Has the advantages that: according to the multifunctional operation platform, the aerial operation vehicle and the control method thereof, the size of the operation platform can be adjusted according to the operation requirement; meanwhile, the working range of the vehicle is effectively enlarged through the expansion and the lifting of the platform; an elastic element is added between the working platform and the arm support, so that vibration transmission between the manned platform and the arm support is effectively inhibited, the vibration amplitude and the vibration speed of the working bucket are reduced, and the stability and the safety of the working bucket in the working state of the overhead working truck are improved, thereby being beneficial to improving the working efficiency. Through the platform structure, the manned movable platform can be elastically connected with the fixed platform. The real-time vibration reduction of the platform in the arm support movement and platform adjustment process is ensured; by the structure, the size of the platform can be adjusted, and the requirement of carrying tools is met; the operation requirement of a narrow space is met by adjusting the size of the platform; the working range of the vehicle is effectively enlarged through the expansion and the lifting of the platform; the safety of the platform in the adjusting process is ensured through the dual-redundancy limit control of a mechanical system and an electrical system.
Drawings
FIG. 1 is a perspective view of an embodiment multi-function work platform;
FIG. 2 is a schematic view of an embodiment of an adjustment and driving device of a multi-function work platform;
FIG. 3 is an isometric view of an embodiment multi-function work platform;
FIG. 4 is a schematic view of the telescoping mechanism in the embodiment;
FIG. 5 is a control flow diagram of an embodiment multi-function work platform;
in the figure: fixed platform 1, moving platform 2, the right side is stretched mechanism 3, the right side is stretched hydraulic cylinder 3.1, is stretched mechanism 4, is stretched hydraulic cylinder 4.1 forward, right side follower 5, the left side is stretched mechanism 6, the left side is stretched hydraulic cylinder 6.1, left side follower 7, fixed platform metal rubber shock absorber 8, metal rubber axle sleeve 9, rotary mechanism 10, lift cylinder 11, cylinder rod 11.1, tray 11.2, lift cylinder metal rubber shock absorber 11.3.
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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may also include different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Example 1
As shown in fig. 1 to 4, a multifunctional working platform comprises a fixed platform 1, a movable platform 2 and a rotating mechanism 10;
the movable platform 2 is arranged on the fixed platform 1 through a lifting mechanism and can lift relative to the fixed platform 1;
the fixed platform 1 is connected with a leveling system through a rotating mechanism 10, and the fixed platform 1 is controlled to rotate within a certain angle range along the horizontal plane direction through the stretching of a leveling oil cylinder;
the movable platform 2 is provided with a telescopic mechanism, and the size of the movable platform can be adjusted through the telescopic mechanism;
the upper surface of the fixed platform 1 is provided with a fixed platform metal rubber shock absorber 8, and when the movable platform 2 is lowered to the lowest position, the fixed platform metal rubber shock absorber 8 is positioned between the fixed platform 1 and the lower surface of the movable platform 2.
As shown in fig. 4, the lifting mechanism includes a lifting cylinder 11, the lifting cylinder 11 includes a cylinder rod 11.1, a tray 11.2, and a lifting cylinder metal rubber shock absorber 11.3, the bottom end of the cylinder rod 11.1 is fixed on the fixed platform 1, and the top end of the cylinder rod 11.1 is fixedly provided with the tray 11.2 for supporting and pushing the bottom of the movable platform 2 during lifting;
further, a lifting oil cylinder metal rubber shock absorber 11.3 is arranged on the upper surface of the tray 11.2 and used for absorbing shock of the movable platform 2 in the lifting process.
The oil cylinder rod 11.1 is vertically arranged, and the tray 11.2 is horizontally arranged;
the oil cylinder rod 11.1 is positioned at the central position of the fixed platform 1;
the tray 11.2 is of a disc structure, and the tray 11.2 and the oil cylinder rod 11.1 are arranged coaxially.
Multifunctional operation platform, still include guiding mechanism, guiding mechanism includes guide post and metal rubber axle sleeve 9, the vertical direction fixed connection of guide post sets up on fixed platform 1, metal rubber axle sleeve 9 with move one side fixed connection of platform 2, metal rubber axle sleeve 9 cover is established on the guide post, and can follow the guide post relative slip and go up and down, carries out the damping to moving platform 2 simultaneously.
Furthermore, an upper limit mechanism and a lower limit mechanism are arranged on the guide post, and the metal rubber shaft sleeve 9 is movably limited between the upper limit mechanism and the lower limit mechanism of the guide post;
the guide posts comprise two guide posts which are arranged in parallel.
In some embodiments, the movable platform 2 has a bilateral symmetry structure, wherein the middle of the rear side of the movable platform 2 is mounted on the guide post through a metal rubber bushing 9, and the middle of the rear side of the movable platform 2 is located above the lift cylinder 11.
The telescopic mechanism comprises a right stretching mechanism 3, a forward stretching mechanism 4, a left stretching mechanism 6, a right follow-up mechanism 5, a left follow-up mechanism 7, a right stretching hydraulic oil cylinder 3.1, a forward stretching hydraulic oil cylinder 4.1 and a left stretching hydraulic oil cylinder 6.1;
the right stretching mechanism 3 telescopically controls the movable platform to stretch out or retract to the right side within a certain range through a right stretching hydraulic oil cylinder 3.1; the forward extending mechanism 4 extends or retracts forwards within a certain range through a forward extending hydraulic oil cylinder 4.1 telescopic control brake platform; the left stretching mechanism 6 stretches out or retracts towards the left side within a certain range through a left stretching hydraulic oil cylinder 6.1 stretching control braking platform;
the right follow-up mechanism 5 is connected with the right stretching mechanism 3 and the forward stretching mechanism 4 and is used for keeping the platform closed all the time when the movable platform stretches out or retracts in all directions; the left follow-up mechanism 7 is connected with the left extension mechanism 6 and the forward extension mechanism 4 and used for keeping the platform closed all the time when the movable platform extends or retracts in all directions.
The right extension hydraulic oil cylinder 3.1, the forward extension hydraulic oil cylinder 4.1 and the left extension hydraulic oil cylinder 6.1 are all arranged in the horizontal direction and are arranged on a bottom frame of the movable platform 2, wherein one end of the right extension hydraulic oil cylinder 3.1 is fixed on a rear fixing mechanism of the movable platform, and the other end is connected to the right extension mechanism 3; one end of a left-extending hydraulic oil cylinder 6.1 is fixed on the rear fixing mechanism, and the other end is connected to the left-extending mechanism 6; one end of a forward extending hydraulic oil cylinder 4.1 is fixed on the rear fixing mechanism, and the other end is connected to the forward extending mechanism 4;
the right side servo mechanism 5, the left side servo mechanism 7 and the rear fixing mechanism are both hollow tubular structures, the two ends of the right stretching mechanism 3 are respectively movably sleeved in the right side servo mechanism 5 and the rear fixing mechanism, the two ends of the front stretching mechanism 4 are respectively movably sleeved in the right side servo mechanism 5 and the left side servo mechanism 7, and the two ends of the left stretching mechanism 6 are respectively movably sleeved in the left side servo mechanism 7 and the rear fixing mechanism.
Example 2
An aerial work vehicle comprises the multifunctional work platform.
1) The multifunctional operation platform is connected with a get-off system (comprising a platform leveling system, an arm frame amplitude and expansion system and a rotary table rotating system) of the aerial work vehicle through a rotating mechanism 10, so that the most basic leveling requirement of the platform can be met;
2) when the arm support is in the motion process, the movable platform 2 is in the original position, namely the movable platform 2 is in contact with the fixed platform metal rubber shock absorbers 8 arranged on the fixed platform 1, and the 4 fixed platform metal rubber shock absorbers 8 are uniformly distributed on the fixed platform 1. When the arm support moves, including amplitude variation, stretching and rotation, the platform vibrates or shakes due to the influences of hydraulic impact, inertia and the like. The platform can be subjected to vibration reduction treatment in multiple directions through the fixed platform metal rubber vibration absorber 8 and the metal rubber shaft sleeve 9, so that the comfort of the platform is improved;
3) when the arm support is in a static state, the size of the platform can be adjusted according to requirements. The platform can realize unilateral adjustment (right extension, left extension and forward extension) and multidirectional simultaneous adjustment. Wherein, the horizontal direction structure of moving platform 2, right side follower 5, left side follower 7 is the hollow tube, and the right side is stretched mechanism 3, is stretched mechanism 4, is stretched 6 horizontal direction structures of mechanism for solid pole, and the solid pole cover is established and is carried out sliding connection in inserting the hollow tube of corresponding structure. The solid rod and the hollow tube are of variable cross-section structures, and can mechanically limit the sliding motion, as shown in fig. 3; the vertical pipes in the structure are all solid structures;
i. platform right side is flexible
The two ends of the right stretching mechanism 3 are respectively inserted into the hollow tube structures of the movable platform 2 and the right follow-up mechanism 5, and the right follow-up mechanism 5 is simultaneously connected with the forward stretching mechanism 4. The right side movement hydraulic oil cylinder is driven to stretch and retract through the control handle to drive the right stretching mechanism 3 to move, and then the right side follow-up mechanism 5 is driven to move towards the right side along the forward stretching mechanism 4, so that the platform is guaranteed to be closed.
Left side telescoping of platform
The two ends of the left stretching mechanism 6 are respectively inserted into the hollow pipe structures of the movable platform 2 and the left following mechanism 7, and the left following mechanism 7 is simultaneously connected with the front stretching mechanism 4. The left-side motion hydraulic oil cylinder is driven by the control handle to stretch and retract to drive the left stretching mechanism 6 to move, and then the left-side follow-up mechanism 7 is driven to move towards the left side along the front stretching mechanism 4, so that the platform is guaranteed to be closed.
Front side telescoping of platform
The front side movement hydraulic oil cylinder is driven to stretch and retract through the control handle to drive the forward extending mechanism 4 to move, and then the right side follow-up mechanism 5 and the left side follow-up mechanism 7 are driven to move towards the front side along the right extending mechanism 3 and the left extending mechanism 6, so that the platform is guaranteed to be closed.
Multidirectional adjustment
The multi-direction adjustment is a composite action of the three unidirectional adjustments, and the handle controls a plurality of mechanisms to be connected with the hydraulic oil cylinder, so that various combinations of the sizes of the platforms are realized.
4) When the arm support is in a static state, the height of the platform can be adjusted. The height adjustment is realized by driving the lifting oil cylinder 11 to do telescopic motion through the control handle. The lift cylinder 11 mainly comprises 3 parts: a cylinder rod 11.1, a tray 11.2 and a lift cylinder metal rubber damper 11.3, as shown in fig. 4. When the height of the movable platform 2 is at an original position, a circular tray structure at the bottom of the movable platform is separated from the lifting oil cylinder 11, and the vibration reduction of the movable platform 2 depends on a fixed platform metal rubber vibration absorber 8 and a metal rubber shaft sleeve 9; in the lifting process of the movable platform 2, a circular tray structure at the bottom of the movable platform 2 is in contact with the lifting oil cylinder 11, and the vibration reduction of the movable platform 2 depends on the metal rubber vibration absorber 11.3 of the lifting oil cylinder and the metal rubber shaft sleeve 9;
5) when the arm support is in a static state, the rotation of the platform can be realized. The rotation angle is adjusted by driving a swing oil cylinder in the rotating mechanism 10 to rotate through a control handle;
6) the platform is adjusted according to the state required, and fig. 2 is a schematic structural diagram of the multifunctional operation platform after completing a certain adjustment state.
Example 3
The control method of the multifunctional working platform comprises the following steps:
acquiring control signals of the amplitude variation, the rotation and the telescopic handle of the arm support,
in response to the judgment that the control signal of the amplitude-variable handle of the arm support is larger than the arm support motion starting threshold value, namely that the arm support is in a motion state, sending an instruction to control the platform to be prohibited from carrying out adjustment action;
in response to the judgment that the control signal of the luffing handle of the arm support is smaller than the arm support motion starting threshold value, namely the arm support is in a static state, information of a platform oil cylinder length sensor and an angle sensor is obtained, and the telescopic amount of an oil cylinder and the horizontal rotation angle of the platform are obtained;
responding to the fact that the telescopic amount of the oil cylinder is located in the corresponding set range, sending an instruction to control the platform to perform corresponding movable platform size and lifting adjustment actions according to the telescopic handle control signal; or, in response to the fact that the telescopic quantity of the oil cylinder exceeds the corresponding set range, sending an instruction to control alarm, automatically adjusting the oil cylinder to a critical set value, and simultaneously finishing the action;
responding to the fact that the horizontal rotation angle of the platform is within a set range, and sending an instruction to control the platform to perform corresponding rotation according to a rotation handle control signal; or, in response to the fact that the horizontal rotation angle of the platform exceeds the set range, sending an instruction to control alarming, automatically rotating the platform to a critical set value, and simultaneously finishing the action.
In some embodiments, platform rotation, size, and height adjustment are controlled by a control handle and built-in sensors and follow the control scheme shown in fig. 5.
i. Firstly, detecting control signals of amplitude variation, rotation and a telescopic handle of the arm support, if the control signals are larger than a motion starting threshold value of the arm support, namely the arm support is in a motion state, forbidding a platform to perform adjustment action, and ending the process;
ii, if the signal of the arm support motion control handle is smaller than a starting threshold value, namely the arm support is in a static state, performing function detection on the platform sensor;
if the platform sensor does not work normally, the platform is forbidden to adjust and give an alarm, and the process is finished;
if the platform sensor works normally, the platform is allowed to perform an adjusting action. But is limited to performing one adjustment action at a time;
v, for the size and lifting adjustment of the platform, detecting signals of built-in displacement sensors of corresponding oil cylinders and comparing the signals with the maximum and minimum stretching amounts of the oil cylinders set by the system. If the telescopic amount of the oil cylinder is within a set range, the platform can be correspondingly adjusted according to a signal of the control handle; if the telescopic quantity of the oil cylinder exceeds a set range, alarming and automatically adjusting the oil cylinder to a critical set value, and simultaneously ending the process;
and vi, for platform rotation, detecting a horizontal rotation angle signal of the platform and comparing the horizontal rotation angle signal with a set value of a system. If the angle is within the set range, the platform can perform corresponding rotation according to the control handle; if the angle exceeds the set range, alarming and automatically rotating the platform to a critical set value and ending the process;
the invention adopts mechanical and electrical systems to carry out redundancy limit control to ensure the safety of the platform in the adjusting process.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the claimed invention.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. A multifunctional operation platform is characterized by comprising a fixed platform, a movable platform and a rotating mechanism;
the movable platform is arranged on the fixed platform through a lifting mechanism and can lift relative to the fixed platform;
the fixed platform is connected with the leveling system through the rotating mechanism, and is controlled to rotate within a certain angle range along the horizontal plane direction through the stretching of the leveling oil cylinder;
the movable platform is provided with a telescopic mechanism, and the size of the movable platform can be adjusted through the telescopic mechanism;
and the upper surface of the fixed platform is provided with a fixed platform metal rubber shock absorber, and when the movable platform is lowered to the lowest position, the fixed platform metal rubber shock absorber is positioned between the fixed platform and the lower surface of the movable platform.
2. The multifunctional operation platform according to claim 1, wherein the lifting mechanism comprises a lifting cylinder, the lifting cylinder comprises a cylinder rod, a tray and a lifting cylinder metal rubber shock absorber, the bottom end of the cylinder rod is fixed on the fixed platform, and the tray is fixedly arranged at the top end of the cylinder rod and used for supporting and pushing the bottom of the movable platform in the lifting action;
the upper surface of the tray is provided with a lifting oil cylinder metal rubber shock absorber for absorbing shock of the moving platform in the lifting process.
3. The multi-function work platform of claim 2, wherein said cylinder rod is vertically disposed and said tray is horizontally disposed;
and/or the oil cylinder rod is positioned at the central position of the fixed platform;
and/or the tray is of a disc structure, and the tray and the oil cylinder rod are arranged on the same central shaft.
4. The multifunctional working platform according to claim 1 or 2, further comprising a guide mechanism, wherein the guide mechanism comprises a guide post and a metal rubber shaft sleeve, the guide post is fixedly connected to the fixed platform in the vertical direction, the metal rubber shaft sleeve is fixedly connected to one side of the movable platform, and the metal rubber shaft sleeve is arranged on the guide post in a sleeved mode, can slide relatively along the guide post to lift, and simultaneously can damp vibration of the movable platform.
5. The multifunctional working platform as claimed in claim 4, wherein the guide post is provided with an upper limit mechanism and a lower limit mechanism, and the metal rubber shaft sleeve is movably limited between the upper limit mechanism and the lower limit mechanism of the guide post;
the guide posts comprise two guide posts which are arranged in parallel.
6. The multifunctional work platform of claim 4, wherein the movable platform is a bilateral symmetry structure, wherein the middle part of the rear side of the movable platform is mounted on the guide post through a metal rubber shaft sleeve, and the middle part of the rear side of the movable platform is located above the lift cylinder.
7. The multifunctional work platform of claim 1, wherein the telescoping mechanism comprises a right extension mechanism, a forward extension mechanism, a left extension mechanism, a right side follower mechanism, a left side follower mechanism, a right extension hydraulic cylinder, a forward extension hydraulic cylinder, a left extension hydraulic cylinder;
the right stretching mechanism stretches out or retracts towards the right side within a certain range through a right stretching hydraulic oil cylinder stretching control braking platform; the forward extending mechanism extends forwards or retracts forwards within a certain range through a forward extending hydraulic oil cylinder telescopic control brake platform; the left stretching mechanism stretches out or retracts towards the left side within a certain range through a left stretching hydraulic oil cylinder stretching control braking platform;
the right side follow-up mechanism is connected with the right stretching mechanism and the forward stretching mechanism and is used for realizing that the movable platform is always kept closed when extending or retracting in all directions; the left side follow-up mechanism is connected with the left extension mechanism and the front extension mechanism and used for realizing that the movable platform always keeps closed when extending or retracting in all directions.
8. The multifunctional operation platform as claimed in claim 7, wherein the right extension hydraulic cylinder, the forward extension hydraulic cylinder and the left extension hydraulic cylinder are all arranged in a horizontal direction and are arranged on a bottom frame of the movable platform, wherein one end of the right extension hydraulic cylinder is fixed on a rear fixing mechanism of the movable platform, and the other end of the right extension hydraulic cylinder is connected to the right extension mechanism; one end of the left extension hydraulic oil cylinder is fixed on the rear fixing mechanism, and the other end of the left extension hydraulic oil cylinder is connected to the left extension mechanism; one end of the forward extending hydraulic oil cylinder is fixed on the rear fixing mechanism, and the other end of the forward extending hydraulic oil cylinder is connected to the forward extending mechanism;
the right side follow-up mechanism, the left side follow-up mechanism and the rear fixing mechanism are hollow tubular structures, the two ends of the right stretching mechanism are respectively movably sleeved in the right side follow-up mechanism and the rear fixing mechanism, the two ends of the front stretching mechanism are respectively movably sleeved in the right side follow-up mechanism and the left side follow-up mechanism, and the two ends of the left stretching mechanism are respectively movably sleeved in the left side follow-up mechanism and the rear fixing mechanism.
9. An aerial work vehicle comprising a multi-function work platform as claimed in any one of claims 1 to 8.
10. The multifunctional work platform of any one of claims 1 to 8, comprising:
acquiring control signals of the amplitude variation, the rotation and the telescopic handle of the arm support,
in response to the judgment that the control signal of the amplitude-variable handle of the arm support is larger than the arm support motion starting threshold value, namely that the arm support is in a motion state, sending an instruction to control the platform to be prohibited from carrying out adjustment action;
in response to the judgment that the control signal of the luffing handle of the arm support is smaller than the arm support motion starting threshold value, namely the arm support is in a static state, information of a platform oil cylinder telescopic sensor and a rotation angle sensor is obtained, and the telescopic amount of the oil cylinder and the horizontal rotation angle of the platform are obtained;
responding to the fact that the telescopic amount of the oil cylinder is located in the corresponding set range, sending an instruction to control the platform to perform corresponding movable platform size and lifting adjustment actions according to the telescopic handle control signal; or, in response to the fact that the telescopic quantity of the oil cylinder exceeds the corresponding set range, sending an instruction to control alarm, automatically adjusting the oil cylinder to a critical set value, and simultaneously finishing the action;
responding to the fact that the horizontal rotation angle of the platform is within a set range, and sending an instruction to control the platform to perform corresponding rotation according to a rotation handle control signal; or, in response to the fact that the horizontal rotation angle of the platform exceeds the set range, sending an instruction to control alarming, automatically rotating the platform to a critical set value, and simultaneously finishing the action.
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| CN112125240B (en) | 2021-11-30 |
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