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WO2012034460A1 - Reel hydraulic apparatus having free-floating control for quick-release - Google Patents

Reel hydraulic apparatus having free-floating control for quick-release Download PDF

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Publication number
WO2012034460A1
WO2012034460A1 PCT/CN2011/078028 CN2011078028W WO2012034460A1 WO 2012034460 A1 WO2012034460 A1 WO 2012034460A1 CN 2011078028 W CN2011078028 W CN 2011078028W WO 2012034460 A1 WO2012034460 A1 WO 2012034460A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
check valve
free
reel
release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/078028
Other languages
French (fr)
Chinese (zh)
Inventor
朱长林
乔国华
刘发民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
Original Assignee
Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
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 Hunan Zoomlion Special Vehicle Co Ltd, Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd filed Critical Hunan Zoomlion Special Vehicle Co Ltd
Publication of WO2012034460A1 publication Critical patent/WO2012034460A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4481—Arrangements or adaptations for driving the reel or the material
    • B65H75/4484—Electronic arrangements or adaptations for controlling the winding or unwinding process, e.g. with sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4481—Arrangements or adaptations for driving the reel or the material
    • B65H75/4489—Fluid motors
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7058—Rotary output members
    • 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
    • F15B2211/77—Control of direction of movement of the output member
    • F15B2211/7741—Control of direction of movement of the output member with floating mode, e.g. using a direct connection between both lines of a double-acting cylinder

Definitions

  • the invention relates to a technical solution proposed for realizing rapid switching between a tension state and a free floating state of a reel device of a hydraulic continuous grab of a underground continuous wall, and is a roll with free rewind floating control of a reel
  • the disc hydraulic device belongs to the technical field of underground continuous wall hydraulic grab. Background technique
  • this solution can greatly reduce the tension and impact on the cable, tubing and reel when the grab is quickly lowered.
  • the reel system without floating control should solve the pulling force and impact on the tubing and reel when the grab is released quickly.
  • the displacement of the hydraulic pump has to be increased to drive the reel to rotate faster, because of the speed and acceleration of the rapid release. Both are large, to achieve the desired effect, the displacement of the pump is large, and the system is also very large. Summary of the invention
  • the technical solution of the present invention provides a free and fast reel A floating control reel hydraulic device, characterized in that: the reel hydraulic device comprises a cable reel hydraulic motor and at least two tubing reel hydraulic motors, which are connected in parallel on the cable reel hydraulic motor and each tubing reel hydraulic motor There is a free-release floating control valve with a first check valve built in, and a second check valve is connected in series with the free-release floating control valve in parallel with the cable reel hydraulic motor, in parallel with the tubing reel hydraulic motor.
  • the second floating check valve is connected in series with a second check valve and a third check valve.
  • the second check valve is connected to the first check valve and is opposite in direction, and the second check valve is opposite to the third check valve.
  • a three-position four-way electromagnetic reversing valve is connected in parallel on each free-floating floating control valve, and all three four-way electromagnetic reversing valves are cascaded with each other to lead out on the cascaded three-position four-way electromagnetic reversing valve.
  • a fourth check valve is connected between the valves .
  • the invention connects the free-release floating control valve in parallel in the original hydraulic pipeline, and realizes the switching between the tension state and the free floating state by controlling the on-off of the electromagnetic 2/2-way on-off valve in the free-release floating control valve.
  • the invention has the advantages that the reel can be quickly and reliably switched between the tension state and the free floating state without changing the mechanical structure of the motor and the reducer to meet the requirements of the reel speed in different working conditions, and the system is simple, compact and reliable. . DRAWINGS
  • FIG. 1 is a schematic view of a reel hydraulic device with a reel free-release floating control provided by the present invention. detailed description
  • the present invention provides a reel with reel free-release floating control
  • the hydraulic device including the cable reel hydraulic motor 1 and the two tubing reel hydraulic motors 2, has a free built-in first check valve 4 in parallel with the cable reel hydraulic motor 1 and each tubing reel hydraulic motor 2
  • the floating control valve 3 is placed, and a second check valve 5 is connected in series with the free-release floating control valve 3 connected in parallel with the cable reel hydraulic motor 1, and a free-release floating control valve 3 is connected in parallel with the tubing reel hydraulic motor 2.
  • the second check valve 5 is connected to the first check valve 4 and is opposite in direction, and the second check valve 5 and the third check valve 6 are opposite to each other.
  • a three-position four-way electromagnetic reversing valve that is, a first three-position four-way electromagnetic reversing valve 7, and a second three-position four-way electromagnetic reversing valve 8 are connected in parallel with each free-floating floating control valve 3.
  • the third three-position four-way electromagnetic reversing valve 9 all three four-way electromagnetic reversing valves are cascaded with each other, and the pressure oil inlet end P and the return oil valve are led out on the cascaded three-position four-way electromagnetic reversing valve
  • an electric proportional relief valve 11 is connected between the pressure oil inlet end P and the return oil valve block end T, at the pressure oil inlet end P and
  • a fourth check valve 10 is connected between the cascaded three-position four-way electromagnetic reversing valve.
  • Electromagnet Y5 and electromagnet Y6 are provided at both ends of the first three-position four-way electromagnetic reversing valve 7, and electromagnet Y3 and electromagnet Y4 are provided at both ends of the second three-position four-way electromagnetic reversing valve 8
  • the three-three-position four-way electromagnetic reversing valve 9 has an electromagnet Y1 and an electromagnet Y2 at both ends.
  • the electric proportional relief valve 11 is used to set the working pressure of the system.
  • the electromagnet Yl, the electromagnet ⁇ 3 and the electromagnet ⁇ 5 are obtained when the grab works in normal working conditions.
  • the pressure oil is from the pressure oil inlet end
  • the fourth check valve 10 the first three-position four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8 and the third three-position four-way electromagnetic reversing valve 9 enter the lifting oil inlet.
  • the free-release floating control valve 3 is de-energized (because of the presence of the check valve 4, the free-floating floating control valve 3 is in the one-way off state), the oil is cut off from the A1 cavity to the B1 cavity, the cable reel hydraulic motor 1.
  • the tubing reel hydraulic motor 2 is in the tightening state, and all the system pressure oil flows back to the oil valve block through the electric proportional relief valve 11.
  • the electromagnet Y1, the electromagnet ⁇ 3, and the electromagnet ⁇ 5 are energized, the first three-position four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8 and the third
  • the three-position four-way electromagnetic reversing valve 9 still works in the right position, the pressure oil is pushed in by the lifting oil inlet, and the free-floating floating control valve 3 is energized.
  • the electromagnet Y2 When the electromagnet Y2, the electromagnet ⁇ 4, and the electromagnet ⁇ 6 are energized, the first three-position four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8, and the third three-position four-way electromagnetic reversing valve 9 are both Working in the left position, the pressure oil is pushed in by the lower oil inlet, and the second check valve 5 is used to ensure that the reverse operation of the reel is reliable without interference from the free-release floating control valve 3; in equipment assembly, disassembly and transportation When the site is assembled, the reversing action of the reel is realized.
  • the third check valve 6 is a charge check valve. When the motor has an instantaneous suction condition during the fast release condition, the oil flowing through the oil return valve block is replenished by the S port through the third check valve 6 Motor B1 port.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A reel hydraulic apparatus having a free-floating control for quick-release comprises an electric cable-reel hydraulic motor (1) and at least two oil conduit-reel hydraulic motors (2). The electric cable-reel hydraulic motor and each of the oil conduit-reel hydraulic motors is parallel connected to one free-floating control valve for quick-release (3) that contains a first check valve (4). The free-floating control valve for quick-release parallel-connected to the electric cable-reel hydraulic motor is serially connected to a second check valve (5). The free-floating control valve for quick-release parallel-connected to an oil conduit reel hydraulic motor is serially connected to another second check valve (5) and a third check valve (6). The second check valve and the first check valve are connected and are in the same direction. The second check valve and the third check valve are in opposite directions. Each free-floating control valve for quick-release is parallel connected to a three-position, four-way electromagnetic reversing-valve. All three-position, four-way electromagnetic reversing-valves are cascaded to each other. Connected to all cascading connected three-position, four-way electromagnetic reversing-valves are a pressured oil entry terminal (P) and an oil spill valve terminal (T). An electric proportional relief valve (11) bridges the pressured oil entry terminal and the oil spill valve. A fourth check valve (10) connects the pressured oil entry terminal (P) to each cascading connected three-position, four-way electromagnetic reversing-valve. The present reel hydraulic apparatus enables rapid, reliable switching between a reel's tension state and free-floating state with no need to modify the mechanical structure of motors and reducers.

Description

一种带有卷盘自由快放浮动控制的卷盘液压装置  Reel hydraulic device with reel free-release floating control

技术领域  Technical field

本发明涉及一种为实现地下连续墙液压抓斗的卷盘装置在涨紧状态与 自由浮动状态间的快速切换而提出的技术解决方案， 是一种带有卷盘自由 快放浮动控制的卷盘液压装置， 属于地下连续墙液压抓斗技术领域。 背景技术  The invention relates to a technical solution proposed for realizing rapid switching between a tension state and a free floating state of a reel device of a hydraulic continuous grab of a underground continuous wall, and is a roll with free rewind floating control of a reel The disc hydraulic device belongs to the technical field of underground continuous wall hydraulic grab. Background technique

在地下连续墙液压抓斗施工时， 经常会碰到硬土层， 此时仅靠抓斗的 自重来抓士， 效率会大打折扣， 为加快施工效率可以应用抓斗快速下放功 能来冲击土层， 此时抓斗的快速下放由主卷扬机的机械片式离合器控制， 随同抓斗一起下放的还有控制电缆与油管， 快放时需要将电缆、 油管卷盘 由涨紧状态向自由浮动状态切换， 快放结束后则由自由浮动状态向涨紧状 态切换。  In the construction of underground continuous wall hydraulic grabs, hard soil layers are often encountered. At this time, only the weight of the grabs is used to grab the soldiers, and the efficiency will be greatly reduced. To speed up the construction efficiency, the quick release function of the grab can be applied to impact the soil layer. At this time, the quick release of the grab is controlled by the mechanical disc clutch of the main hoist. The control cable and the oil pipe are also lowered along with the grab. When the quick release is performed, the cable and the tubing reel need to be switched from the tension state to the free floating state. After the fast release ends, it switches from the free floating state to the tightened state.

相比不带浮动控制的卷盘系统， 本方案可以大大减小抓斗快速下放时 对电缆、 油管及卷盘的拉力及冲击。 不带浮动控制的卷盘系统要解决抓斗 快放时对油管及卷盘的拉力及冲击则不得不加大液压泵的排量以驱动卷盘 更快的转动， 因为快速下放的速度及加速度均较大， 要达到理想的效果泵 的排量需求较大， 系统也变的很庞大。 发明内容  Compared with the reel system without floating control, this solution can greatly reduce the tension and impact on the cable, tubing and reel when the grab is quickly lowered. The reel system without floating control should solve the pulling force and impact on the tubing and reel when the grab is released quickly. The displacement of the hydraulic pump has to be increased to drive the reel to rotate faster, because of the speed and acceleration of the rapid release. Both are large, to achieve the desired effect, the displacement of the pump is large, and the system is also very large. Summary of the invention

本发明的目的是提供一种卷盘自由快放浮动控制装置， 在不改动马达、 减速机的机械结构的情况下实现卷盘在涨紧状态与自由浮动状态间的快速 切换。  SUMMARY OF THE INVENTION It is an object of the present invention to provide a reel free-floating floating control device which realizes rapid switching between a retracted state and a free floating state without changing the mechanical structure of the motor and the reducer.

为了达到上述目的， 本发明的技术方案是提供了一种带有卷盘自由快 放浮动控制的卷盘液压装置， 其特征在于： 该卷盘液压装置包括电缆卷盘 液压马达及至少两个油管卷盘液压马达， 在电缆卷盘液压马达及每个油管 卷盘液压马达上并联有一个内置第一单向阀的自由快放浮动控制阀， 在与 电缆卷盘液压马达并联的自由快放浮动控制阀上串联有第二单向阀， 在与 油管卷盘液压马达并联的自由快放浮动控制阀上串联有第二单向阀及第三 单向阀， 第二单向阀与第一单向阀相连且方向相对， 第二单向阀与第三单 向阀方向相背， 在每个自由快放浮动控制阀上并联有一个三位四通电磁换 向阀， 所有三位四通电磁换向阀相互级联， 在级联的三位四通电磁换向阀 上引出有压力油入口端及接回油阀块端， 在压力油入口端与接回油阀块端 之间跨接电比例溢流阀， 在压力油入口端与级联的三位四通电磁换向阀之 间连接有第四单向阀。 In order to achieve the above object, the technical solution of the present invention provides a free and fast reel A floating control reel hydraulic device, characterized in that: the reel hydraulic device comprises a cable reel hydraulic motor and at least two tubing reel hydraulic motors, which are connected in parallel on the cable reel hydraulic motor and each tubing reel hydraulic motor There is a free-release floating control valve with a first check valve built in, and a second check valve is connected in series with the free-release floating control valve in parallel with the cable reel hydraulic motor, in parallel with the tubing reel hydraulic motor. The second floating check valve is connected in series with a second check valve and a third check valve. The second check valve is connected to the first check valve and is opposite in direction, and the second check valve is opposite to the third check valve. A three-position four-way electromagnetic reversing valve is connected in parallel on each free-floating floating control valve, and all three four-way electromagnetic reversing valves are cascaded with each other to lead out on the cascaded three-position four-way electromagnetic reversing valve. There is a pressure oil inlet end and a return oil valve block end, and an electric proportional relief valve is connected between the pressure oil inlet end and the return oil valve block end, and the cascaded three-position four-way electromagnetic exchange is performed at the pressure oil inlet end. A fourth check valve is connected between the valves .

本发明将自由快放浮动控制阀并联在原液压管路中， 通过控制自由快 放浮动控制阀中的电磁二位二通开关阀的通断实现涨紧状态与自由浮动状 态间的切换。  The invention connects the free-release floating control valve in parallel in the original hydraulic pipeline, and realizes the switching between the tension state and the free floating state by controlling the on-off of the electromagnetic 2/2-way on-off valve in the free-release floating control valve.

本发明的优点是在不改动马达、 减速机的机械结构的情况下实现卷盘 在涨紧状态与自由浮动状态间快速可靠的切换以配合不同工况对卷盘速度 的要求， 系统简洁紧凑可靠。 附图说明  The invention has the advantages that the reel can be quickly and reliably switched between the tension state and the free floating state without changing the mechanical structure of the motor and the reducer to meet the requirements of the reel speed in different working conditions, and the system is simple, compact and reliable. . DRAWINGS

图 1 为本发明提供的一种带有卷盘自由快放浮动控制的卷盘液压装置 示意图。 具体实施方式  BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a reel hydraulic device with a reel free-release floating control provided by the present invention. detailed description

以下结合实施例来具体说明本发明。  The invention will be specifically described below in conjunction with the examples.

实施例  Example

如图 1所示， 为本发明提供的一种带有卷盘自由快放浮动控制的卷盘 液压装置， 包括电缆卷盘液压马达 1及两个油管卷盘液压马达 2， 在电缆卷 盘液压马达 1及每个油管卷盘液压马达 2上并联有一个内置第一单向阀 4 的自由快放浮动控制阀 3，在与电缆卷盘液压马达 1并联的自由快放浮动控 制阀 3上串联有第二单向阀 5，在与油管卷盘液压马达 2并联的自由快放浮 动控制阀 3上串联有第二单向阀 5及第三单向阀 6，第二单向阀 5与第一单 向阀 4相连且方向相对， 第二单向阀 5与第三单向阀 6方向相背， 在每个 自由快放浮动控制阀 3上并联有一个三位四通电磁换向阀， 即第一三位四 通电磁换向阀 7、第二三位四通电磁换向阀 8及第三三位四通电磁换向阀 9， 所有三位四通电磁换向阀相互级联， 在级联的三位四通电磁换向阀上引出 有压力油入口端 P及接回油阀块端 T,在压力油入口端 P与接回油阀块端 T 之间跨接电比例溢流阀 11， 在压力油入口端 P与级联的三位四通电磁换向 阀之间连接有第四单向阀 10。 在第一三位四通电磁换向阀 7的两端有电磁 铁 Y5及电磁铁 Y6, 在第二三位四通电磁换向阀 8的两端有电磁铁 Y3及 电磁铁 Y4,在第三三位四通电磁换向阀 9的两端有电磁铁 Y1及电磁铁 Y2。 As shown in FIG. 1, the present invention provides a reel with reel free-release floating control The hydraulic device, including the cable reel hydraulic motor 1 and the two tubing reel hydraulic motors 2, has a free built-in first check valve 4 in parallel with the cable reel hydraulic motor 1 and each tubing reel hydraulic motor 2 The floating control valve 3 is placed, and a second check valve 5 is connected in series with the free-release floating control valve 3 connected in parallel with the cable reel hydraulic motor 1, and a free-release floating control valve 3 is connected in parallel with the tubing reel hydraulic motor 2. There is a second check valve 5 and a third check valve 6 connected in series. The second check valve 5 is connected to the first check valve 4 and is opposite in direction, and the second check valve 5 and the third check valve 6 are opposite to each other. On the back, a three-position four-way electromagnetic reversing valve, that is, a first three-position four-way electromagnetic reversing valve 7, and a second three-position four-way electromagnetic reversing valve 8 are connected in parallel with each free-floating floating control valve 3. The third three-position four-way electromagnetic reversing valve 9, all three four-way electromagnetic reversing valves are cascaded with each other, and the pressure oil inlet end P and the return oil valve are led out on the cascaded three-position four-way electromagnetic reversing valve At the block end T, an electric proportional relief valve 11 is connected between the pressure oil inlet end P and the return oil valve block end T, at the pressure oil inlet end P and A fourth check valve 10 is connected between the cascaded three-position four-way electromagnetic reversing valve. Electromagnet Y5 and electromagnet Y6 are provided at both ends of the first three-position four-way electromagnetic reversing valve 7, and electromagnet Y3 and electromagnet Y4 are provided at both ends of the second three-position four-way electromagnetic reversing valve 8 The three-three-position four-way electromagnetic reversing valve 9 has an electromagnet Y1 and an electromagnet Y2 at both ends.

机器启动后泵的压力油由压力油入口端 Ρ进， 电比例溢流阀 11用于设 定系统的工作压力， 抓斗工作在普通工况时电磁铁 Yl、 电磁铁 Υ3及电磁 铁 Υ5得电， 第一三位四通电磁换向阀 7、 第二三位四通电磁换向阀 8及第 三三位四通电磁换向阀 9均工作在右位， 压力油由压力油入口端 Ρ经第四 单向阀 10、 第一三位四通电磁换向阀 7、 第二三位四通电磁换向阀 8及第 三三位四通电磁换向阀 9进入起升油入口 Α, 自由快放浮动控制阀 3失电 (因为单向阀 4的存在， 自由快放浮动控制阀 3处于单向截止状态）， 油液 由 A1腔到 B1腔为截止状态， 电缆卷盘液压马达 1、 油管卷盘液压马达 2 处于涨紧状态， 系统的压力油全部通过电比例溢流阀 11流回油阀块。 当抓 斗为自由快放工况时电磁铁 Yl、 电磁铁 Υ3、 电磁铁 Υ5得电， 第一三位四 通电磁换向阀 7、 第二三位四通电磁换向阀 8及第三三位四通电磁换向阀 9 仍工作在右位，压力油由起升油入口 Α进， 自由快放浮动控制阀 3得电（处 于连通状态）， 各卷盘因为抓斗的快速拖动， 在泵工况工作的马达泵出的液 压油流量将达到普通工况的 2~3倍， 这些液压油全部通过自由快放浮动控 制阀 3由 A1腔经过第二单向阀 5循环回 B1腔，各卷盘马达处于浮动状态， 这样就使卷盘系统既满足了被拖动时的转速要求， 同时液压系统总的流量 需求也没有大的变化 （浮动的时候油液是局部循环的）。 After the machine is started, the pressure oil of the pump is pushed in from the inlet end of the pressure oil. The electric proportional relief valve 11 is used to set the working pressure of the system. The electromagnet Yl, the electromagnet Υ3 and the electromagnet Υ5 are obtained when the grab works in normal working conditions. Electric, the first three four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8 and the third three-position four-way electromagnetic reversing valve 9 all work in the right position, the pressure oil is from the pressure oil inlet end The fourth check valve 10, the first three-position four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8 and the third three-position four-way electromagnetic reversing valve 9 enter the lifting oil inlet. , the free-release floating control valve 3 is de-energized (because of the presence of the check valve 4, the free-floating floating control valve 3 is in the one-way off state), the oil is cut off from the A1 cavity to the B1 cavity, the cable reel hydraulic motor 1. The tubing reel hydraulic motor 2 is in the tightening state, and all the system pressure oil flows back to the oil valve block through the electric proportional relief valve 11. When the grab is free and fast-release, the electromagnet Y1, the electromagnet Υ3, and the electromagnet Υ5 are energized, the first three-position four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8 and the third The three-position four-way electromagnetic reversing valve 9 still works in the right position, the pressure oil is pushed in by the lifting oil inlet, and the free-floating floating control valve 3 is energized. In the connected state), the hydraulic oil flow pumped by the motor working in the pump working condition will reach 2~3 times of the normal working condition due to the rapid dragging of the grabs. These hydraulic oils all pass the free fast release floating control. The valve 3 is circulated from the A1 chamber to the B1 chamber through the second check valve 5, and the reel motors are in a floating state, so that the reel system satisfies the rotational speed requirement when being dragged, and the total flow demand of the hydraulic system is also There is no big change (the oil is partially circulated when floating).

电磁铁 Y2、电磁铁 Υ4、电磁铁 Υ6得电时第一三位四通电磁换向阀 7、 第二三位四通电磁换向阀 8及第三三位四通电磁换向阀 9均工作在左位， 压力油由下放油入口 Β进， 第二单向阀 5用以确保反向下放卷盘时动作可 靠不受自由快放浮动控制阀 3 的干扰； 在设备装配、 拆车运输、 工地组装 的时候实现卷盘反向动作。 第三单向阀 6为补油单向阀， 在快放工况时马 达若有瞬间吸空情况出现时， 机器流经回油阀块的油由 S 口经过第三单向 阀 6补进马达 B1口。  When the electromagnet Y2, the electromagnet Υ4, and the electromagnet Υ6 are energized, the first three-position four-way electromagnetic reversing valve 7, the second three-position four-way electromagnetic reversing valve 8, and the third three-position four-way electromagnetic reversing valve 9 are both Working in the left position, the pressure oil is pushed in by the lower oil inlet, and the second check valve 5 is used to ensure that the reverse operation of the reel is reliable without interference from the free-release floating control valve 3; in equipment assembly, disassembly and transportation When the site is assembled, the reversing action of the reel is realized. The third check valve 6 is a charge check valve. When the motor has an instantaneous suction condition during the fast release condition, the oil flowing through the oil return valve block is replenished by the S port through the third check valve 6 Motor B1 port.

Claims

权利要求 Rights request 1. 一种带有卷盘自由快放浮动控制的卷盘液压装置， 其特征在于： 该 卷盘液压装置包括电缆卷盘液压马达 （1) 及至少两个油管卷盘液压马达 (2)， 在电缆卷盘液压马达 （1) 及每个油管卷盘液压马达 （2) 上并联有 一个内置第一单向阀 （4) 的自由快放浮动控制阀 （3)， 在与电缆卷盘液压 马达 （1) 并联的自由快放浮动控制阀门 （3) 上串联有第二单向阀 （5)， 在与油管卷盘液压马达 （2) 并联的自由快放浮动控制阀门 （3) 上串联有 第二单向阀 （5) 及第三单向阀 （6)， 第二单向阀 （5) 与第一单向阀 （4) 相连且方向相对， 第二单向阀 （5) 与第三单向阀 （6) 的方向相背， 在每 个自由快放浮动控制阀 （3) 上并联有一个三位四通电磁换向阀， 所有三位 四通电磁换向阀相互级联， 在级联的三位四通电磁换向阀上引出有压力油 入口端 （P) 及接回油阀块端 （T), 在压力油入口端 （P) 与接回油阀块端 (T) 之间跨接电比例溢流阀 （11)， 在压力油入口端 （P) 与级联的三位四 通电磁换向阀之间连接有第四单向阀 （10)。 A reel hydraulic device with reel free-release float control, characterized in that: the reel hydraulic device comprises a cable reel hydraulic motor (1) and at least two tubing reel hydraulic motors (2), A free-floating floating control valve (3) with a built-in first check valve (4) is connected in parallel with the cable reel hydraulic motor (1) and each tubing reel hydraulic motor (2), in the hydraulic pressure with the cable reel The motor (1) is connected in parallel with a free-floating floating control valve (3) with a second check valve (5) connected in series, on the free-floating floating control valve (3) in parallel with the tubing reel hydraulic motor (2). There is a second check valve (5) and a third check valve (6), the second check valve (5) is connected to the first check valve (4) and is opposite in direction, and the second check valve (5) is The third check valve (6) is opposite in direction. A three-position four-way electromagnetic reversing valve is connected in parallel with each free-floating floating control valve (3), and all three four-way electromagnetic reversing valves are cascaded with each other. , the pressure oil inlet end (P) and the return oil valve block are led out on the cascaded three-position four-way electromagnetic reversing valve (T), between the pressure oil inlet end (P) and the return oil valve block end (T), the electric proportional relief valve (11) is connected, at the pressure oil inlet end (P) and the cascaded three-four A fourth check valve (10) is connected between the electromagnetic reversing valves.
PCT/CN2011/078028 2010-09-14 2011-08-04 Reel hydraulic apparatus having free-floating control for quick-release Ceased WO2012034460A1 (en)

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