WO2022193770A1 - 高空作业平台的浮动装置 - Google Patents

高空作业平台的浮动装置 Download PDF

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Publication number
WO2022193770A1
WO2022193770A1 PCT/CN2021/140783 CN2021140783W WO2022193770A1 WO 2022193770 A1 WO2022193770 A1 WO 2022193770A1 CN 2021140783 W CN2021140783 W CN 2021140783W WO 2022193770 A1 WO2022193770 A1 WO 2022193770A1
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WO
WIPO (PCT)
Prior art keywords
hydraulic cylinder
balance valve
floating
floating device
aerial work
Prior art date
Application number
PCT/CN2021/140783
Other languages
English (en)
French (fr)
Inventor
刘国良
赵俊波
Original Assignee
湖南星邦智能装备股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 湖南星邦智能装备股份有限公司 filed Critical 湖南星邦智能装备股份有限公司
Priority to AU2021434045A priority Critical patent/AU2021434045A1/en
Priority to EP21931343.4A priority patent/EP4279439A4/en
Priority to US18/277,050 priority patent/US20240043257A1/en
Publication of WO2022193770A1 publication Critical patent/WO2022193770A1/zh

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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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/004—Mounting arrangements for axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/06—Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08—Characteristics of fluid dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/02—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle
    • 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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • 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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/008—Valve failure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/30—Increase in
    • B60B2900/331—Safety or security
    • B60B2900/3312—Safety or security during regular use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/004—Mounting arrangements for axles
    • B60B35/006—Mounting arrangements for axles with mounting plates or consoles fitted to axles
    • B60B35/007—Mounting arrangements for axles with mounting plates or consoles fitted to axles for mounting suspension elements to axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/005—Suspension locking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/32—Rigid axle suspensions pivoted
    • B60G2200/322—Rigid axle suspensions pivoted with a single pivot point and a straight axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/46—Means for locking the suspension
    • B60G2204/4605—Means for locking the suspension hydraulically, e.g. interrupting communication between the chambers of a hydraulic cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/62—Adjustable continuously, e.g. during driving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/41—Dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/06—Cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • B60G2500/104—Damping action or damper continuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/01—Attitude or posture control
    • B60G2800/012—Rolling condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control
    • B60G2800/912—Attitude Control; levelling control
    • B60G2800/9123—Active Body Control [ABC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members

Definitions

  • the invention relates to the field of construction machinery, in particular to a floating device of an aerial work platform.
  • the aerial work platform is a lifting mechanical equipment used for aerial work maintenance.
  • the product has the characteristics of stable structure, flexible movement, stable lifting, convenient operation, and large load capacity, which provides convenience for aerial work units. Move the platform car to a suitable position, adjust the platform car to the level, and then fix the platform car for lifting.
  • One function that the aerial work platform needs to rely on during the moving process and adjustment to the level is the whole vehicle floating of the aerial work platform.
  • the floating of the whole vehicle on the high-altitude platform is realized by adding a floating oil cylinder on the swing bridge.
  • One end of the oil cylinder is connected to the frame, and the other end is connected or pressed on the swing bridge.
  • An oil cylinder is installed at each end of a swing bridge.
  • the extension of the oil cylinder on one side of the bridge can realize the swinging of the swing bridge, and at the same time the other side of the swing bridge will drive the other oil cylinder to retract.
  • the floating oil cylinder can ensure the rapid movement of the oil cylinder and adapt to the changes of the ground in time, so that the four wheels of the whole vehicle touch the ground and are parallel to each other. Maintain good walking drive.
  • the method of locking the floating oil cylinder is generally adopted to ensure the safety of the whole machine. Because the position of the oil cylinder changes during floating, safety accidents such as tipping are prone to occur, and the floating oil cylinder is locked. When the hydraulic cylinder fails to lock, the hydraulic oil leaks, and the cylinder slides, the entire high-altitude platform may tip over and cause casualties.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention proposes a floating device for an aerial work platform, which can solve the problem of overturning of the whole aerial platform caused by the failure of the hydraulic cylinder, the leakage of hydraulic oil and the sliding of the oil cylinder.
  • a floating device for an aerial work platform includes: a pressure oil source, a controller, a left floating device, a right floating device, a vehicle frame and a swing bridge, wherein the left floating device includes: a left hydraulic cylinder, A left balance valve and a left lock device, the left balance valve is arranged on the oil port of the left hydraulic cylinder, the left balance valve is connected to the pressure oil source through the left lock device, and the left lock device is connected to the left hydraulic cylinder.
  • the control ends of the left balance valve are all connected with the controller;
  • the right floating device includes a right hydraulic cylinder, a right balance valve and a right blocking device, and the right balance valve is arranged on the oil port of the right hydraulic cylinder, so
  • the right balance valve is connected to the pressure oil source through the right blocking device, and the control ends of the right blocking device and the right balance valve are both connected to the controller;
  • one end of the left hydraulic cylinder is connected to the One end of the right hydraulic cylinder is hinged on the frame;
  • the swing bridge is hinged with the frame, and the other end of the left hydraulic cylinder and the other end of the right hydraulic cylinder are relatively hinged on two sides of the swing bridge. end.
  • a floating device for an aerial work platform has at least the following beneficial effects: in the embodiment of the present invention, the left hydraulic cylinder in the left floating device and the right hydraulic cylinder in the right floating device are respectively arranged on the side of the swing bridge. Both ends, while the swing bridge is hinged on the frame, the controller realizes the left hydraulic cylinder and the right hydraulic cylinder by controlling the switches of the left balance valve, right balance valve, left lock device and right lock device of the left floating device and the right floating device. Floating and locking, so as to realize the floating and fixing of the swing bridge.
  • the left balance valve is set on the oil port of the left hydraulic cylinder, the left balance valve is connected to the pressure oil source through the left locking device, and the right balance valve is set on the oil port of the right hydraulic cylinder.
  • the right balance valve is connected to the pressure oil source through the right blocking device.
  • the control ends of the left blocking device, the left balance valve, the right blocking device and the right balance valve are all connected to the controller.
  • the pressure oil source is the action of the left hydraulic cylinder and the right hydraulic cylinder. Provide pressure oil, and supplement pressure oil for the left hydraulic cylinder and the right hydraulic cylinder in the floating state.
  • the controller controls the opening or closing of the left blocking device, the left balance valve, the right blocking device and the right balance valve.
  • the controller controls the left blocking device
  • the left balance valve, the right blocking device and the right balance valve are opened, the oil circuits of the left hydraulic cylinder and the right hydraulic cylinder are connected to form a floating circuit.
  • the left hydraulic cylinder and the right hydraulic oil are under the combined action of the pressure oil and the ground. Push the swing bridge to swing up and down, so that the four tires of the whole vehicle are always close to the ground, and the whole vehicle is in a floating state; when the controller is turned off, the left locking device, left balance valve, right locking device and right balance valve are closed, and the left balance valve is closed.
  • the left and right balance valves play a first layer of oil circuit locking for the left hydraulic cylinder and the right hydraulic cylinder, respectively, while the left and right locking devices play a second layer of oil circuit locking for the left hydraulic cylinder and the right hydraulic cylinder, respectively.
  • the swing bridge is in a fixed state; when the left balance valve and the right balance valve fail, that is, when the left hydraulic cylinder and the right hydraulic cylinder fail to lock, the left locking device and the right
  • the blocking device can still play the role of blocking the oil circuit, and can effectively prevent the blocking failure of the left hydraulic cylinder and the right hydraulic cylinder, hydraulic oil leakage and oil cylinder sliding.
  • the controller controls the oil supply.
  • both the left locking device and the right locking device are hydraulically controlled check valves.
  • the left locking device and the right locking device are both hydraulically controlled reversing valves.
  • the left hydraulic cylinder and the right hydraulic cylinder are single-acting hydraulic cylinders.
  • a rotation shaft is provided on the vehicle frame, and the swing bridge is hinged to the vehicle frame through the rotation shaft.
  • the rotation axis is disposed on the centerline of the frame.
  • FIG. 1 is a front view of an embodiment of the present invention
  • FIG. 2 is a side view of an embodiment of the present invention
  • FIG. 3 is a hydraulic schematic diagram of an embodiment of the present invention using a hydraulically controlled check valve as a locking device
  • FIG. 4 is a hydraulic principle diagram of using a hydraulically controlled reversing valve as a locking device according to an embodiment of the present invention.
  • the azimuth description such as the azimuth or position relationship indicated by up, down, front, rear, left, right, etc.
  • the azimuth description is based on the azimuth or position relationship shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
  • the floating device of an aerial work platform includes a frame 700 , a swing bridge 600 , a left floating device, and a right floating device.
  • the swing bridge 600 is hinged on the frame 700 and swings Both ends of the bridge 600 are connected to the tires, and the ground contact of the tires can be controlled by controlling the rotation of the swing bridge 600 to realize the floating of the frame 700;
  • the left floating device is installed on the left side of the swing bridge 600, and the left floating device includes the left hydraulic cylinder 300 , left balance valve 310, left lock device, pressure oil source 100 and controller 200, left balance valve 310 is arranged on the oil port of left hydraulic cylinder 300, left balance valve 310 is connected with pressure oil source 100 through left lock device, left lock
  • the control end of the device and the left balance valve 310 is connected with the controller 200;
  • the right floating device is installed on the right side of the swing bridge 600, and the right floating device includes the right hydraulic cylinder 400, the right balance valve 410, the right blocking device,
  • the operator operates the controller 200 to close the left locking device, the left balance valve 310 , the right locking device and the right balance valve 410 , thereby locking the oil circuits of the left hydraulic cylinder 300 and the right hydraulic cylinder 400 , so that the left hydraulic cylinder 300 and the right hydraulic cylinder 400 cannot move, thereby locking the swing axle 600, making the swing axle 600 unable to rotate, and then fixing the frame 700.
  • the left balance valve 310 fails or the hydraulic oil leaks
  • the left locking device can The locked state of the left hydraulic cylinder 300 is ensured to ensure that the left hydraulic cylinder 300 does not slip.
  • the right locking device can ensure the locked state of the right hydraulic cylinder 400 and ensure that the right hydraulic cylinder 400 does not slip.
  • the left locking device and the right locking device are used as the second layer locking of the left hydraulic cylinder 300 and the right hydraulic cylinder 400 respectively, which can effectively prevent the locking failure, hydraulic oil leakage and oil cylinder sliding of the left hydraulic cylinder 300 and the right hydraulic cylinder 400. stability of the frame 700.
  • the controller 200 controls the oil source, the left balance valve 310 , the right balance valve 410 , the left lock device and the right lock device are all hydraulic control devices. Referring to FIG. 3 , the left lock device and the right lock device are all hydraulic control devices.
  • Check valve operate the controller 200, open the left hydraulic control check valve 320, the left balance valve 310, the right hydraulic control check valve 420 and the right balance valve 410. At this time, the left hydraulic control check valve 320 and the right hydraulic control check valve are opened.
  • the oil circuits at both ends of the valve 420 are connected, and the frame 700 is in a floating state; the left hydraulic control check valve 320, the left balance valve 310, the right hydraulic control check valve 420 and the right balance valve 410 are closed.
  • the oil circuits at both ends of the left balance valve 310 and the right balance valve 410 that are locked in the second layer are also blocked, and the oil circuits at both ends of the left hydraulic control check valve 320 and the right hydraulic control check valve 420 that are the second layer are also blocked.
  • 700 is in a stable and non-floating state; when the spools of the left balance valve 310 and the right balance valve 410 are blocked or the hydraulic oil leaks, the left hydraulic control check valve 320 and the right hydraulic control check valve 420 can still lock the left hydraulic cylinder 300 and the oil circuit of the right hydraulic cylinder 400 to prevent the oil cylinder from sliding.
  • both the left locking device and the right locking device are hydraulically controlled reversing valves, operate the controller 200 to open the left hydraulically controlled reversing valve 330 , the left balance valve 310 , the right hydraulically controlled reversing valve 430 and the right balance valve 410.
  • the oil paths at both ends of the left hydraulic control valve 330 and the right hydraulic control valve 430 are connected, and the frame 700 is in a floating state; close the left hydraulic control valve 330, the left balance valve 310, and the right The hydraulic control reversing valve 430 and the right balance valve 410, at this time, the oil circuits at both ends of the left balance valve 310 and the right balance valve 410, which are the first layer of blocking, are blocked, and the left hydraulic control reversing valve 330 and The oil circuits at both ends of the right hydraulic control reversing valve 430 are also closed, and the frame 700 is in a stable and non-floating state; when the left balance valve 310 and the right balance valve 410 are blocked or the hydraulic oil leaks, the left hydraulic control reversing The valve 330 and the right hydraulic control reversing valve 430 can still block the oil circuits of the left hydraulic cylinder 300 and the right hydraulic cylinder 400 to prevent the oil cylinders from sliding.
  • the controller 200 can also be an electro-hydraulic controller 200, the left balance valve 310, the right balance valve 410, the left blocking device and the right blocking device can also be electronically controlled, for example, the left blocking device and the left blocking device are electronically controlled single
  • the directional valve or the left blocking device and the left blocking device are electrically controlled reversing valves, which all belong to the protection scope of the present invention.
  • the left hydraulic cylinder 300 and the right hydraulic cylinder 400 are both single-acting hydraulic cylinders.
  • the left hydraulic cylinder 300 inhales hydraulic oil
  • the left hydraulic cylinder 300 is extended, and the left side of the swing bridge 600 is on the left side.
  • the action of the hydraulic cylinder 300 moves down, the right side of the swing bridge 600 moves up under the action of the hinge lever, and at the same time pushes the right hydraulic cylinder 400 to retract, extruding the hydraulic oil in the right hydraulic cylinder 400, and the extruded hydraulic oil It is sucked into the left hydraulic cylinder 300, and finally realizes the floating control of the swing bridge 600;
  • the floating oil circuit of the single-acting hydraulic cylinder is simple and reliable.
  • a double-acting hydraulic cylinder can also be used.
  • the vehicle frame 700 is provided with a rotating shaft 500
  • the swing axle 600 is hinged on the vehicle frame 700 through the rotating shaft 500
  • the rotating shaft 500 is arranged on the center line of the vehicle frame 700.
  • the left locking device and the right locking device constitute the second layer of locking of the left hydraulic cylinder 300 and the right hydraulic cylinder 400, and the swing bridge 600 in the fixed state prevents the locking failure of the left hydraulic cylinder 300 and the right hydraulic cylinder 400 ,
  • the hydraulic oil leaks to ensure that the oil cylinder will not slide, and the aerial work platform will not tip over due to the sliding of the oil cylinder.
  • the use of hydraulically controlled reversing valve and hydraulically controlled one-way valve can easily realize the second-layer locking function of the locking device, and the operation is simple and the locking performance is reliable.
  • the movement amounts of the left and right sides are equal, which ensures that the hydraulic oil input and output of the left hydraulic cylinder 300 and the right hydraulic cylinder 400 are kept equal, and the stability of the hydraulic system is improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Forklifts And Lifting Vehicles (AREA)

Abstract

一种高空作业平台的浮动装置，包括压力油源（100）、控制器（200）、左浮动装置、右浮动装置、车架（700）和摆动桥（600）；左浮动装置包括左液压缸（300）、左平衡阀（310）和左闭锁装置，右浮动装置包括右液压缸（400）、右平衡阀（410）和右闭锁装置，左液压缸（300）的一端和右液压缸（400）的一端铰接在车架（700）上；摆动桥（600）与车架（700）铰接，左液压缸（300）的另一端和右液压缸（400）的另一端相对铰接在摆动桥（600）的两端；左闭锁装置和右闭锁装置构成了左液压缸（300）和右液压缸（400）的第二层闭锁，确保了高空作业平台不会因为油缸滑动而产生倾翻。

Description

高空作业平台的浮动装置
本申请要求于2021年3月19日提交中国专利局、申请号为202110295073.8、发明名称为“高空作业平台的浮动装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及工程机械领域，尤其涉及一种高空作业平台的浮动装置。
背景技术
高空作业平台是用于高空作业维修的升降机械设备，产品具有结构稳固、移动灵活、升降平稳、操作方便、载重量大等特点，为高空作业单位提供了方便，高空作业平台在作业时，先将平台车移动到合适位置，调整平台车至水平，然后固定好平台车，进行升降作业。高空作业平台在移动过程和调节至水平过程中需要依靠的一个功能便是高空作业平台的整车浮动。
高空平台的整车浮动采用在摆动桥上增加浮动油缸的方式实现，油缸一端连接车架，另一端连接或顶压在摆动桥上，一个摆动桥的两端各安装有一个油缸，通过控制摆动桥一侧油缸的伸出可以实现摆动桥摆动，同时摆动桥的另一侧会带动另一个油缸缩回，浮动油缸能保证油缸快速动作，及时适应地面的变化，使得整车四轮触地并保持较好的行走驱动力。
相关技术中，在高空平台处于工作状态时，一般采用锁止浮动油缸的方法保证整机的安全性，因为浮动时油缸位置变化不定，很容易出现倾翻等安全事故，且在锁止浮动油缸时，液压油缸的闭锁失效、液压油泄露、油缸滑动的问题可能会导致高空平台整机倾翻从而造成人员伤亡。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种高空作业平台的浮动装置，能够解决由于液压缸的闭锁失效、液压油泄露和油缸滑动而导致的高空平台整机倾翻的问题。
根据本发明的实施例的一种高空作业平台的浮动装置，包括：压力油源、控制器、左浮动装置、右浮动装置、车架和摆动桥，所述左浮动装置包括：左液压缸、左平衡阀和左闭锁装置，所述左平衡阀设置在所述左液压缸的油口上，所述左平衡阀通过所述左闭锁装置与所述压力油源相连，所述左闭锁装置和所述左平衡阀的控制端皆与所述控制器相连；所述右浮动装置包括右液压缸、右平衡阀和右闭锁装置，所述右平衡阀设置在所述右液压缸的油口上，所述右平衡阀通过所述右闭锁装置与所述压力油源相连，所述右闭锁装置和所述右平衡阀的控制端皆与所述控制器相连；所述左液压缸的一端和所述右液压缸的一端铰接在所述车架上；所述摆动桥与所述车架铰接，所述左液压缸的另一端和所述右液压缸的另一端相对铰接在所述摆动桥的两端。
根据本发明实施例的一种高空作业平台的浮动装置，至少具有如下有益效果：本发明实施方式通过将左浮动装置中的左液压缸和右浮动装置中的右液压缸分别设置在摆动桥的两端，而摆动桥铰接在车架上，控制器通过控制左浮动装置和右浮动装置的左平衡阀、右平衡阀、左闭锁装置和右闭锁装置的开关实现左液压缸和右液压缸的浮动与闭锁，从而实现摆动桥的浮动和固定，左平衡阀设置在左液压缸的油口上，左平衡阀通过左闭锁装置与压力油源相连，右平衡阀设置在右液压缸的油口上，右平衡阀通过右闭锁装置与压力油源相连，左闭锁装置、左平衡阀、右闭锁装置和右平衡阀的控制端皆与控制器相连，压力油源为左液压缸和右液压缸的动作提供压力油，以及在浮动状态时为左液压缸和右液压缸补充压力油，控制器控制左闭锁装置、左平衡阀、右闭锁装置和右平衡阀的开启或关闭，当控制器控制左闭锁装置、左平衡阀、右闭锁装置和右平衡阀开启时，左液压缸和右液压缸的油路连通，形成浮动回路，此时左液压缸和右液压油在压 力油和地面的共同作用下推动摆动桥上下摆动,从而使整车四个轮胎始终紧贴地面,整车处于浮动状态；当控制器关闭时，左闭锁装置、左平衡阀、右闭锁装置和右平衡阀关闭，左平衡阀和右平衡阀分别对左液压缸和右液压缸起到第一层油路锁止作用，而左闭锁装置和右闭锁装置分别对左液压缸和右液压缸起到第二层油路锁止作用，左液压缸和右液压缸被锁止，此时摆动桥处于固定状态；当左平衡阀和右平衡阀失效时，即左液压缸和右液压缸锁止失效时，左闭锁装置和右闭锁装置仍然能够起到闭锁油路的作用，可以有效的防止左液压缸和右液压缸的闭锁失效、液压油泄露和油缸滑动发生。
根据本发明的一些实施例，所述控制器为控制油源。
根据本发明的一些实施例，所述左闭锁装置和所述右闭锁装置皆为液控单向阀。
根据本发明的一些实施例，所述左闭锁装置和所述右闭锁装置皆为液控换向阀。
根据本发明的一些实施例，所述左液压缸和所述右液压缸为单作用液压缸。
根据本发明的一些实施例，所述车架上设置有转动轴，所述摆动桥通过所述转动轴铰接在所述车架上。
根据本发明的一些实施例，所述转动轴设置在所述车架的中心线上。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
下面结合附图和实施例对本发明做进一步的说明，其中：
图1为本发明实施例的正视图；
图2为本发明实施例的侧视图；
图3为本发明实施例的采用液控单向阀作为闭锁装置的液压原理图；
图4为本发明实施例的采用液控换向阀作为闭锁装置的液压原理图。
附图标记：
压力油源100、控制器200、左液压缸300、左平衡阀310、左液控单向阀320、左液控换向阀330、右液压缸400、右平衡阀410、右液控单向阀420、右液控换向阀430、转动轴500、摆动桥600、车架700。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
本发明的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
参考图1至图4所示，根据本发明实施例的高空作业平台的浮动装置，包括车架700、摆动桥600、左浮动装置、右浮动装置，摆动桥600铰接在车架700上，摆动桥600的两端与轮胎相连，通过控制摆动桥600的转动即可控制轮胎的触地，实现车架700的浮动；左浮动装置安装在摆动桥600左侧，左浮动装置包括左液压缸300、左平衡阀310、左闭锁装置、压力油 源100和控制器200，左平衡阀310设置在左液压缸300的油口上，左平衡阀310通过左闭锁装置与压力油源100相连，左闭锁装置和左平衡阀310的控制端与控制器200相连；右浮动装置安装在摆动桥600右侧，右浮动装置包括右液压缸400、右平衡阀410、右闭锁装置、压力油源100和控制器200，右平衡阀410设置在右液压缸400的油口上，右平衡阀410通过右闭锁装置与压力油源100相连，右闭锁装置和右平衡阀410的控制端皆与控制器200相连；左液压缸300的一端与车架700铰接，另一端与摆动桥600的左侧铰接，右液压缸400的一端与车架700铰接，另一端与摆动桥600的右侧铰接；当左平衡阀310、左闭锁装置、右平衡阀410和右闭锁装置皆打开时，左液压缸300和右液压缸400的油腔连通，且通过压力油源100对左液压缸300和右液压缸400补油，此时车架700处于浮动状态，即当摆动桥600随地形的起伏而转动时，左液压缸300和右液压缸400随摆动桥600两端的移动而伸或缩，从而实现车架700的浮动。当车架700不需要浮动时，操作人员操作控制器200，关闭左闭锁装置、左平衡阀310、右闭锁装置和右平衡阀410，从而将左液压缸300和右液压缸400的油路闭锁，使得左液压缸300和右液压缸400无法动作，从而锁定摆动桥600，使得摆动桥600无法转动，进而固定住车架700，当左平衡阀310失效或液压油泄露时，左闭锁装置能够确保左液压缸300的闭锁状态，确保左液压缸300不会发生滑动。当右平衡阀410失效或液压油泄露时，右闭锁装置能够确保右液压缸400的闭锁状态，确保右液压缸400不会发生滑动。左闭锁装置和右闭锁装置分别作为左液压缸300和右液压缸400的第二层闭锁，可以有效的防止左液压缸300和右液压缸400的闭锁失效、液压油泄露和油缸滑动发生，确保了车架700的稳定。
其中，控制器200为控制油源，左平衡阀310、右平衡阀410、左闭锁装置和右闭锁装置均为液控装置，参考图3所示，左闭锁装置和右闭锁装置皆为液控单向阀，操作控制器200，打开左液控单向阀320、左平衡阀310、右液控单向阀420和右平衡阀410，此时左液控单向阀320和右液控 单向阀420的两端的油路导通，车架700处于浮动状态；关闭左液控单向阀320、左平衡阀310、右液控单向阀420和右平衡阀410，此时作为第一层闭锁的左平衡阀310和右平衡阀410两端的油路截止，且作为第二层闭锁的左液控单向阀320和右液控单向阀420的两端的油路也截止，车架700处于稳定不浮动的状态；当左平衡阀310和右平衡阀410阀芯阻滞或液压油泄漏时，左液控单向阀320和右液控单向阀420仍然能够闭锁左液压缸300和右液压缸400的油路，防止油缸滑动。
参考图4所示，左闭锁装置和右闭锁装置皆为液控换向阀，操作控制器200，打开左液控换向阀330、左平衡阀310、右液控换向阀430和右平衡阀410，此时左液控换向阀330和右液控换向阀430的两端的油路导通，车架700处于浮动状态；关闭左液控换向阀330、左平衡阀310、右液控换向阀430和右平衡阀410，此时作为第一层闭锁的左平衡阀310和右平衡阀410两端的油路截止，且作为第二层闭锁的左液控换向阀330和右液控换向阀430的两端的油路也截止，车架700处于稳定不浮动的状态；当左平衡阀310和右平衡阀410阀芯阻滞或液压油泄漏时，左液控换向阀330和右液控换向阀430仍然能够闭锁左液压缸300和右液压缸400的油路，防止油缸滑动。当然，控制器200也可以是电液控制器200，左平衡阀310、右平衡阀410、左闭锁装置和右闭锁装置也可以为电控，例如，左闭锁装置和左闭锁装置为电控单向阀或者左闭锁装置和左闭锁装置为电控换向阀，这都属于本发明的保护范围。
其次，所述左液压缸300和所述右液压缸400均为单作用液压缸，浮动状态下，左液压缸300在吸入液压油时，左液压缸300伸长，摆动桥600左侧在左液压缸300的作用下下移，摆动桥600右侧在铰接杠杆的作用下上移，同时推动动右液压缸400缩回，将右液压缸400内的液压油挤出，挤出的液压油被吸入左液压缸300，最终实现摆动桥600的浮动控制；单作用液压缸的浮动油路简单，工作可靠，当然除了使用单作用液压缸以外，也可以使用双作用液压缸，这都属于本发明的保护范围。另外，车架700 上设置有转动轴500，摆动桥600通过转动轴500铰接在车架700上，转动轴500设置在车架700的中心线上，当摆动桥600左侧在左液压缸300的作用下下移时，摆动桥600右侧在杠杆作用下上移，且因为转动轴500设置在车架700中心线上，故摆动桥600右侧上移距离与摆动桥600左侧下移距离相同，同时带动右液压缸400收缩，且左液压缸300吸入的液压油，与右液压缸400挤出的液压油的量相同。
综上所述，左闭锁装置和右闭锁装置构成了左液压缸300和右液压缸400的第二层闭锁，摆动桥600在固定状态下，防止左液压缸300和右液压缸400的闭锁失效、液压油泄露，确保油缸不会发生滑动，高空作业平台不会因油缸滑动而产生倾翻。采用液控换向阀和液控单向阀都可以方便实现闭锁装置的第二层闭锁的作用，而且操作简单，闭锁性能可靠，转动轴500布置在车架700中心线上可以确保摆动桥600左侧和右侧的移动量相等，确保左液压缸300和右液压缸400的液压油进出量保持相等，提高液压系统的稳定性。
上面结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，在所属技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。此外，在不冲突的情况下，本发明的实施例及实施例中的特征可以相互组合。

Claims (7)

  1. 一种高空作业平台的浮动装置，包括：
    压力油源(100)；
    控制器(200)；
    左浮动装置，所述左浮动装置包括左液压缸(300)、左平衡阀(310)和左闭锁装置，所述左平衡阀(310)设置在所述左液压缸(300)的油口上，所述左平衡阀(310)通过所述左闭锁装置与所述压力油源(100)相连，所述左闭锁装置和所述左平衡阀(310)的控制端皆与所述控制器(200)相连；
    右浮动装置，所述右浮动装置包括右液压缸(400)、右平衡阀(410)和右闭锁装置，所述右平衡阀(410)设置在所述右液压缸(400)的油口上，所述右平衡阀(410)通过所述右闭锁装置与所述压力油源(100)相连，所述右闭锁装置和所述右平衡阀(410)的控制端皆与所述控制器(200)相连；
    车架(700)，所述左液压缸(300)的一端和所述右液压缸(400)的一端铰接在所述车架(700)上；
    摆动桥(600)，所述摆动桥(600)与所述车架(700)铰接，所述左液压缸(300)的另一端和所述右液压缸(400)的另一端相对铰接在所述摆动桥(600)的两端。
  2. 根据权利要求1所述的一种高空作业平台的浮动装置，其特征在于，所述控制器(200)为控制油源。
  3. 根据权利要求2所述的一种高空作业平台的浮动装置，其特征在于，所述左闭锁装置和所述右闭锁装置皆为液控单向阀。
  4. 根据权利要求2所述的一种高空作业平台的浮动装置，其特征在于，所述左闭锁装置和所述右闭锁装置皆为液控换向阀。
  5. 根据权利要求1所述的一种高空作业平台的浮动装置，其特征在于，所述左液压缸(300)和所述右液压缸(400)为单作用液压缸。
  6. 根据权利要求1所述的一种高空作业平台的浮动装置，其特征在于，所述车架(700)上设置有转动轴(500)，所述摆动桥(600)通过所述转动轴(500)铰接在所述车架(700)上。
  7. 根据权利要求6所述的一种高空作业平台的浮动装置，其特征在于，所述转动轴(500)设置在所述车架(700)的中心线上。
PCT/CN2021/140783 2021-03-19 2021-12-23 高空作业平台的浮动装置 WO2022193770A1 (zh)

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CN215058526U (zh) * 2021-03-19 2021-12-07 湖南星邦智能装备股份有限公司 双作用浮动油缸控制回路

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CN113003501B (zh) 2022-06-24
US20240043257A1 (en) 2024-02-08

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