WO2010094160A1 - 矿用索道液压驱动*** - Google Patents

矿用索道液压驱动*** Download PDF

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Publication number
WO2010094160A1
WO2010094160A1 PCT/CN2009/000266 CN2009000266W WO2010094160A1 WO 2010094160 A1 WO2010094160 A1 WO 2010094160A1 CN 2009000266 W CN2009000266 W CN 2009000266W WO 2010094160 A1 WO2010094160 A1 WO 2010094160A1
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WIPO (PCT)
Prior art keywords
oil
port
hydraulic
valve
explosion
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PCT/CN2009/000266
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English (en)
French (fr)
Inventor
肖公平
肖连平
胡军科
Original Assignee
Xiao Gongping
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Publication date
Application filed by Xiao Gongping filed Critical Xiao Gongping
Priority to EA201190102A priority Critical patent/EA020824B1/ru
Publication of WO2010094160A1 publication Critical patent/WO2010094160A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/0423—Driving gear ; Details thereof, e.g. seals actuated pneumatically or hydraulically

Definitions

  • the invention relates to a ropeway hydraulic drive system.
  • the driving device on the ropeway especially the coal mine underground ropeway, was driven by the motor through the gearbox.
  • the working wheel has the disadvantages of large volume, easy wear and maintenance of the parts, and large maintenance; second, it cannot be steplessly regulated; third, it can not be started at no load, and the impact on the power grid and mechanical components is large.
  • a mining ropeway hydraulic drive system comprising a motor, a closed pump, a hydraulic drive system, a closed pump connected to the motor, and a filter on the oil discharge pipe of the fuel tank,
  • the oil return pipe of the fuel tank is connected to the radiator, and the connection relationship of the hydraulic drive system is as follows: the oil inlet S of the closed pump is connected to the oil outlet pipe of the oil tank, and the oil pump inlet port X3 of the closed pump is connected with the damping valve block.
  • the other end of the damping valve block is respectively connected with the P port and the explosion-proof proportional overflow of the explosion-proof three-position four-way electromagnetic reversing valve, and the other end of the explosion-proof proportional relief valve is respectively driven with the explosion-proof three-position four-way electromagnetic exchange.
  • the T port of the valve is connected with the oil return pipe T 2 of the oil tank; the ⁇ and ⁇ ports of the explosion-proof three-position four-way electromagnetic reversing valve are respectively connected with the variable control cylinder ports XI and ⁇ 2 of the closed pump, and the closed type
  • the drain port of the pump ⁇ 4 is connected to the oil return pipe of the fuel tank T l 5 Closed pump main oil pipe port ⁇ , ⁇ respectively connected to the ⁇ and ⁇ interfaces of the hydraulic motor, and the drain port of the hydraulic motor is connected to the oil return pipe ⁇ 2 of the oil tank.
  • a drive pressure sensor is connected to the line of the closed pump main oil pipe connection ⁇ and the hydraulic motor ⁇ interface.
  • the charge pressure signal sensor is connected to the line connected to the damping valve block.
  • a hydraulic tensioning system is connected to the hydraulic drive system of the mine ropeway, and the connection relationship of the hydraulic tensioning system is as follows: a tensioning oil pump is connected to the motor, and the oil suction port and the oil tank outlet pipe of the oil pump are tensioned.
  • the oil outlet of the tensioning oil pump is respectively connected with the B port of the overflow valve and the tensioning explosion-proof three-position four-way electromagnetic reversing valve, and the oil outlet of the overflow valve is connected to the oil tank returning oil pipe T 4 , tensioning
  • the oil discharge port of the explosion-proof three-position four-way electromagnetic reversing valve is connected with the hydraulic control check valve through the tension throttle valve, and the other end of the hydraulic control check valve respectively has the rod cavity port of the overflow valve and the tension cylinder
  • the other end of the overflow weir is connected to the oil return pipe ⁇ ⁇
  • the oil port of the tensioned explosion-proof three-position four-way electromagnetic reversing valve is respectively connected with the control port of the hydraulic control check valve by the release throttle valve.
  • the rodless cavity port of the tensioning cylinder is connected, and the oil port of the tensioning explosion-proof three-position four-way electromagnetic reversing valve is connected to the oil return pipe T 5 of the oil tank.
  • the accumulator is coupled to the rod chamber port of the tensioning cylinder.
  • a pressure signal sensor for measuring the tensioning cylinder is connected to the outlet of the pilot operated check valve.
  • the hydraulic brake system is connected to the hydraulic tensioning system, and the connection relationship of the hydraulic brake system is as follows:
  • the oil port of the explosion-proof two-position four-way solenoid valve is connected to the rod chamber of the hydraulic control check valve and the tension cylinder On the oil pipe, the oil port is connected to the oil return pipe of the fuel tank , 3 , and the oil port is connected with the rodless cavity port of the actuator cylinder, and the oil port is blocked.
  • the invention has the following beneficial effects: (1)
  • the hydraulic drive can realize the stepless speed regulation and the forward and reverse movement of the ropeway, and can be reversed at a very low speed (can be arbitrarily set) to check the wire rope; (2)
  • the idling start of the motor is realized, thereby improving the service life of the motor and the electrical components;
  • the acceleration and deceleration characteristics of starting and stopping can be arbitrarily set (the time for starting acceleration and parking deceleration can be set), thereby improving the comfort of the ride.
  • Hydraulic tensioning has the characteristics of compact size, large tension and stepless adjustment.
  • the tension can be displayed online to ensure constant tension tension under load changes;
  • the explosion-proof device speed regulation such as explosion-proof inverter
  • Figure 1 is a structural schematic view of a hydraulic drive system for a mine ropeway according to the present invention
  • FIG. 2 is a structural schematic view of a hydraulic tensioning system coupled to a hydraulic drive system for a mine ropeway according to the present invention
  • 3 is a structural schematic diagram of a hydraulic brake system coupled to a hydraulic tensioning system according to the present invention
  • a mining ropeway hydraulic drive system includes a motor 1, a closed pump 2, a hydraulic drive system, and a closed pump 2 is connected to the motor 1, and a filter 5 is arranged on the oil outlet pipe of the oil tank 4.
  • the radiator 19 is connected to the oil return pipe of the oil tank 4, and the connection relationship of the hydraulic drive system is as follows: the oil inlet S of the closed pump 2 is connected to the oil outlet pipe of the oil tank 4, and the closed pump 2 has a built-in oil pump oil outlet X3.
  • the other end of the damping valve block 7 is respectively connected with the P port and the explosion-proof proportional relief valve 9 for driving the explosion-proof three-position four-way electromagnetic reversing valve 8, and the explosion-proof proportional relief valve 9 is additionally One end is respectively connected with the T port of the explosion-proof three-position four-way electromagnetic reversing valve 8 and the oil return pipe T 2 of the oil tank 4; the person who drives the explosion-proof three-position four-way electromagnetic reversing valve 8 and the oil port are respectively closed and closed the variable pump control cylinder 2 interfaces XI, ⁇ 2 linked, closed pump oil return port 2 ⁇ 4 access back to the oil tank T l closed pump manifold 2 of the main fuel line interfaces ⁇ 4, who respectively connected the hydraulic motor Beta 6, Beta Interface, the drain port of the hydraulic motor 6 is connected to the oil return pipe ⁇ 2 of the oil tank 4; the main oil pipe port of the closed pump 2 is connected to the hydraulic motor 6 ⁇ A driving pressure sensor 20 is connected to the pipeline; a
  • a mining ropeway hydraulic drive system includes a motor 1, a closed pump 2, a hydraulic drive system, and a closed pump 2 is connected to the motor 1, and a filter 5 is arranged on the oil discharge pipe of the oil tank 4.
  • the radiator 19 is connected to the oil return pipe of the oil tank 4, and the connection relationship of the hydraulic drive system is as follows: the oil inlet S of the closed pump 1 is connected to the oil outlet pipe of the oil tank 4, the oil outlet ⁇ 3 of the closed pump 2 and the damping
  • the valve blocks 7 are connected, and the other end of the damping block 7 is respectively connected with the oil port of the explosion-proof three-position four-way electromagnetic directional control valve 8 and the explosion-proof proportional overflow raft 9, and the other end of the explosion-proof proportional overflow vent 9 is respectively It is connected with the oil suction port of the explosion-proof three-position four-way electromagnetic reversing valve 8 and the oil return pipe ⁇ 2 of the oil tank 4; the ⁇ and ⁇ oil ports of the explosion-proof three-position four-way
  • the tight throttle 14a is connected with the hydraulic control check valve 15, and the other end of the hydraulic control one-way clamp 15 is respectively connected with the overflow valve 16, the rod-shaped oil port of the tension cylinders 17a, 17b, and the overflow valve 16
  • the other end of the oil tank 4 is returned to the oil branch pipe T 6 , and the oil suction port of the tension explosion-proof three-position four-way electromagnetic reversing valve 13 is respectively loosened by the throttle valve 14b and the control oil port of the hydraulic control check valve 15 and the tension cylinder.
  • a tensioning oil proof three-way solenoid valve 13 is connected to the tank back to the oil port 4 of the branch pipe T 5; accumulator 18 is coupled tensioning cylinder 17a, 17b, There is a rod cavity port; a pressure signal sensor 22 for measuring the tension cylinder is connected to the outlet end of the pilot valve 15 .
  • a mining ropeway hydraulic drive system includes a motor 1, a closed pump 2, a hydraulic drive system, and a closed pump 2 is connected to the motor 1, and a filter 5 is arranged on the oil discharge pipe of the oil tank 4.
  • the radiator 19 is connected to the oil return pipe of the oil tank 4, and the connection relationship of the hydraulic drive system is as follows: the oil inlet S of the closed pump 2 is connected to the oil outlet pipe of the oil tank 4, the oil outlet X3 of the closed pump 2 and the damping
  • the valve block 7 is connected, and the other end of the damping valve block 7 is respectively connected with the P port and the explosion-proof proportional relief valve 9 for driving the explosion-proof three-position four-way electromagnetic reversing valve 8, and the other end of the explosion-proof proportional relief valve 9 is respectively It is connected with the T port of the explosion-proof three-position four-way electromagnetic reversing valve 8 and the oil return pipe T 2 of the fuel tank; the person who drives the explosion-proof three-position four-way electromagnetic reversing gang 8, the
  • connection relationship of the hydraulic tensioning system is as follows:
  • the tensioning oil pump 3 is connected to the motor 1, and the oil suction port of the tensioning oil pump 3 is connected with the oil outlet pipe of the oil tank 4, and the oil outlets of the oil pump 3 are respectively respectively.
  • the overflow valve 12 is connected with the oil suction port of the tensioning explosion-proof three-position four-way electromagnetic reversing valve 13, and the oil outlet of the overflow valve 12 is connected to the oil tank 4 back to the oil branch pipe ⁇ 4 , and the tensioning explosion-proof three-position four-way electromagnetic exchange
  • the oil port of the intermediate 13 is connected to the pilot valve 15 via the tension throttle valve 14a, and the other end of the pilot valve 15 is respectively provided with the oil of the overflow valve 16, the tension cylinders 17a, 17b.
  • the other end of the overflow valve 16 is connected to the oil tank 4 back to the oil branch pipe T 6 , and the oil suction port of the tension explosion-proof three-position four-way electromagnetic reversing valve 13 is respectively released by the throttle valve 14b and the hydraulic control check valve 15 control port, tensioning cylinder 17a, 17b without rod cavity port, tensioning explosion-proof three-position four-way electromagnetic reversing valve 13
  • a port connecting tank 4 oil return pipe T 5 ; accumulator 18 is connected to the rod chamber port of the tensioning cylinders 17a, 17b; at the outlet end of the pilot valve 15 is connected with a pressure signal sensor 22 for measuring the tensioning cylinder; and a hydraulic braking system is coupled to the hydraulic tensioning system,
  • the connection relationship of the hydraulic brake system is as follows:
  • the port B of the explosion-proof two-position four-way solenoid valve 10 is connected to the oil pipe between the pilot valve 15 and the rod chamber of the tension cylinders 17a, 17b, the port A
  • the working principle of the invention is:
  • the motor is started, the closed pump 2 is running, the closed pump 2 has a built-in main pump and a charge pump, and the main pump of the closed pump 2 is not energized due to the tensioning explosion-proof three-position four-way electromagnetic reversing valve 8, so the main pump has no
  • the hydraulic oil output at this time, the charge pump of the closed pump 2 operates at low pressure (2.5 MPa), and the motor power consumed is very small (about 2% of the rated motor power). We can think that the motor is a no-load start.
  • the hydraulic oil pressure after the orifice plate 7 can be changed, thereby affecting the opening between the servos in the closed pump 2, causing the pressure difference thereon to change due to entering the closed pump. 2
  • the variable pressure of the main pump controls the pressure of the cylinder.
  • the swashplate position of the main pump is fixed, so that the output oil flow of the main pump is stabilized, and the system running speed is stabilized. , change the current driving the explosion-proof three-position four-way electromagnetic valve 8 , and the speed of the system changes accordingly.
  • a charge pressure signal sensor 21 is installed on the pressure oil line of the charge pump of the closed pump 2, and when the charge pressure is lower than 0.8 Mpa, the pressure sensor is transmitted to the computer. , Control the motor to stop.
  • the tensioning oil pump 3 When the right electromagnet of the tensioning explosion-proof three-position four-way electromagnetic reversing valve 13 is energized, the tensioning oil pump 3 outputs the pressure oil through the ⁇ tensioning explosion-proof three-position four-way electromagnetic reversing ⁇ 13 right position ⁇ two-section
  • the flow valve 14b ⁇ the rodless cavity of the tensioning cylinders 17a, 17b ⁇ the piston rods of the tensioning cylinders 17a, 17b are extended, thereby reducing the tension of the traction wire rope, at which time the tensioning cylinders 17a, 17b have the cavity back oil through check valve 15, a throttle valve 14a and a tension proof three-way solenoid valve 13 through the oil port a return manifold back to the tank T 5 4.
  • the working pressure of the tensioning oil pump 3 can be set by adjusting the relief valve 12; the primary throttle 14a, the function of the secondary 14b is such that the tensioning cylinders 17a, 17b can move slowly and smoothly during the tensioning process;
  • the check valve 15 maintains the tension cylinders 17a, 17b at a constant working pressure.
  • the explosion-proof two-position four-way solenoid valve 10 is used to control the hydraulic brake cylinder 11 , and in the unenergized state, the hydraulic oil of the hydraulic brake cylinder 11 can be directly discharged into the oil tank 4 through the oil return branch pipe T 3 , and the ropeway is in a braking state. .
  • the electromagnet of the explosion-proof two-position four-way solenoid valve 10 is energized, and the piston rod of the hydraulic brake cylinder 11 is opened by the pressure oil, and the ropeway is started.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Description

矿用索道液压驱动***
技术领域
本发明涉及一种索道液压驱动***。
背景技术
百前在索道特别是煤矿井下索道上的驱动装置是电机通过变速箱带动驱 说
动轮工作， 缺点一是体积大， 机件易磨损， 维护量大； 二是不能无级调速； 三是不能空载启动， 对电网和机械部件的冲击较大。
发明内容 书 本发明的目的是提供一种体积小， 能空载启动并能无级调速的索道液压 驱动***。
本发明的目的是通过如下方式实现的： 一种矿用索道液压驱动***， 包 括电机、 闭式泵、 液压驱动***， 在电机上联接闭式泵， 在油箱的出油管上 有过滤器， 在油箱的回油管上接散热器， 所述的液压驱动***的连接关系为： 闭式泵的进油口 S接油箱的出油管， 闭式泵内置补油泵出油口 X3与阻尼阀块 相联， 阻尼阀块的另一端分别与驱动防爆三位四通电磁换向阀的 P 油口和防 爆比例溢流间相联， 防爆比例溢流阀的另一端分别与驱动防爆三位四通电磁 换向阀的 T油口和油箱的回油支管 T2联接；驱动防爆三位四通电磁换向阀的 Α、 Β油口分别与闭式泵的变量控制油缸接口 XI、 Χ2相联， 闭式泵的泄油口 Χ4接 油箱的回油支管 Tl 5 闭式泵主油管接口 Α、 Β分别接液压马达的 Α、 Β接口， 液压马达的泄油口接油箱的回油支管 Τ2。
在闭式泵主油管接口 Β与液压马达 Β接口的管路上接有驱动压力传感器。 在闭式泵内置补油泵出油口 Χ3 与阻尼阀块相联的管路上接有补油压力 信号传感器。
在矿用索道液压驱动***上联接了液压张紧***， 所述的液压张紧*** 的连接关系为： 在电机上联接张紧油泵， 在张紧油泵的吸油口与油箱出油管 相联， 张紧油泵出油口分别与溢流阀和张紧防爆三位四通电磁换向阀的 B油 口相联， 溢流阀的出油口接油箱回油支管 T4， 张紧防爆三位四通电磁换向阀 的 Τ油口经张紧节流阀与液控单向阀相联， 液控单向阀另一端分别与溢流阀、 张紧油缸的有杆腔油口相联， 溢流闽的另一端接油箱回油支管 Τδ, 张紧防爆 三位四通电磁换向阀的 Ρ 油口经松开节流阀分别与液控单向阀的控制油口、 张紧油缸的无杆腔油口相联， 张紧防爆三位四通电磁换向阀的 Α油口接油箱 的回油支管 T5。
蓄能器联接张紧油缸的有杆腔油口。
在液控单向阀出口端接有测量张紧油缸的压力信号传感器。
在液压张紧***上联接液压制动***， 所述的液压制动***的连接关系 为： 防爆二位四通电磁阀的油口 Β联接在液控单向阀与张紧油缸的有杆腔之 间的油管上， 油口 Α接油箱的回油支管 Τ3, 油口 Ρ与制'动器油缸的无杆腔油 口相联， 油口 Τ封堵。
本发明具有如下的有益效果， （1)液压驱动能实现索道无级调速和正反转 运动， 可以在很低的速度（可以任意设定）下正反转， 以便检查钢丝绳； （2) 可以实现电动机的空载起动， 从而提高电动机和电气元件的使用寿命； （3)可 以任意设定起动和停车的加、减速特性（可设定启动加速和停车减速的时间）， 从而提高乘坐的舒适性； （4 )液压张紧具有体积紧凑， 张紧力大且无级可调 的特点， 同时可以在线显示张紧力的大小， 确保在负载变化的条件下实现恒 张力张紧； （5)适用恶劣工作环境（多尘、 潮湿和要求防爆）条件， 其液压油 流在液压泵和马达之间循环流动， 主油路没有直接和空气接触， 因而不会产 生吸空和不容易污染***； （6 ) 由于不需要采用隔爆设备调速（如隔爆变频 器)， 所以在井下瓦斯环境中使用液压***调速更安全， 因为不存在失爆危险 因素。
附图说明
图 1是本发明矿用索道液压驱动***的结构原理图；
图 2是本发明在矿用索道液压驱动***上联接液压张紧***的结构原理 图； 图 3是本发明在液压张紧***上联接液压制动***的结构原理图； 具体实施方式
如图 1所示， 一种矿用索道液压驱动***， 包括电机 1、 闭式泵 2、 液压 驱动***， 在电机 1上联接闭式泵 2 , 在油箱 4的出油管上有过滤器 5 , 在油 箱 4的回油管上接散热器 19, 所述的液压驱动***的连接关系为： 闭式泵 2 的进油口 S接油箱 4的出油管， 闭式泵 2内置补油泵出油口 X3与阻尼阀块 7 相联， 阻尼阀块 7的另一端分别与驱动防爆三位四通电磁换向阀 8的 P油口 和防爆比例溢流阀 9相联， 防爆比例溢流阀 9的另一端分别与驱动防爆三位 四通电磁换向阀 8的 T油口和油箱 4的回油支管 T2联接； 驱动防爆三位四通 电磁换向阀 8的人、 Β油口分别与闭式泵 2的变量控制油缸接口 XI、 Χ2相联， 闭式泵 2的回油口 Χ4接油箱 4的回油支管 Tl 闭式泵 2主油管接口 Α、 Β分 别接液压马达 6的人、 Β接口， 液压马达 6的泄油口接油箱 4的回油支管 Τ2; 在闭式泵 2主油管接口 Β与液压马达 6Β接口的管路上接有驱动压力传感器 20; 在闭式泵 2内置补油泵出油口 Χ3与阻尼阀块 7相联的管路上接有补油压力信 号传感器 21。。
如图 2所示， 一种矿用索道液压驱动***， 包括电机 1、 闭式泵 2、 液压 驱动***， 在电机 1上联接闭式泵 2, 在油箱 4的出油管上有过滤器 5 , 在油 箱 4的回油管上接散热器 19 , 所述的液压驱动***的连接关系为： 闭式泵 1 的进油口 S接油箱 4的出油管， 闭式泵 2的出油口 Χ3与阻尼阀块 7相联， 阻 尼阅块 7的另一端分别与驱动防爆三位四通电磁换向阀 8的 Ρ油口和防爆比 例溢流闽 9相联， 防爆比例溢流阔 9的另一端分别与驱动防爆三位四通电磁 换向阀 8的 Τ油口和油箱 4的回油支管 Τ2联接； 驱动防爆三位四通电磁换向 阀 8的 Α、 Β油口分别与闭式泵 2的变量控制油缸接口 XI、 Χ2相联, 闭式泵 2 的回油口 Χ4接油箱 4的回油支管 Ί\, 闭式泵 2主油管接口 Α、 Β分别接液压 马达 6的人、 Β接口， 液压马达 6的泄油口接油箱 4的回油支管 Τ2; 在闭式泵 2主油管接口 Β与液压马达 6Β接口的管路上接有驱动压力传感器 20; 在闭式 泵 2 内置补油泵出油口 Χ3与阻尼阀块 7相联的管路上接有补油压力信号传 感器 21; 在矿用索道液压驱动***上联接了液压张紧***， 所述的液压张紧 ***的连接关系为： 在电机 1上联接张紧油泵 3 , 在张紧油泵 3的吸油口与油 箱 4出油管相联， 张紧油泵 3出油口分别与溢流阀 12和张紧防爆三位四通电 磁换向阖 13的 B油口相联， 溢流阀 12的出油口接油箱 4回油支管 T4, 张紧 防爆三位四通电磁换向阀 13的 Τ油口经张紧节流闽 14a与液控单向阀 15相 联， 液控单向闽 15另一端分别与溢流阀 16、 张紧油缸 17a、 17b的有杆腔油 口相联， 溢流阀 16的另一端接油箱 4回油支管 T6, 张紧防爆三位四通电磁换 向阀 13的 Ρ油口经松开节流阀 14b分别与液控单向阀 15的控制油口、 张紧 油缸 17a、 17b的无杆腔油口相联， 张紧防爆三位四通电磁换向阀 13的 A油 口接油箱 4的回油支管 T5; 蓄能器 18联接张紧油缸 17a、 17b的有杆腔油口； 在液控单向阀 15出口端接有测量张紧油缸的压力信号传感器 22。
如图 3所示， 一种矿用索道液压驱动***， 包括电机 1、 闭式泵 2、 液压 驱动***， 在电机 1上联接闭式泵 2 , 在油箱 4的出油管上有过滤器 5 , 在油 箱 4的回油管上接散热器 19 , 所述的液压驱动***的连接关系为： 闭式泵 2 的进油口 S接油箱 4的出油管， 闭式泵 2的出油口 X3与阻尼阀块 7相联， 阻 尼阀块 7的另一端分别与驱动防爆三位四通电磁换向阀 8的 P油口和防爆比 例溢流阀 9相联， 防爆比例溢流阀 9的另一端分别与驱动防爆三位四通电磁 换向阀 8的 T油口和油箱 的回油支管 T2联接； 驱动防爆三位四通电磁换向 岡 8的人、 Β油口分别与闭式泵 2的变量控制油缸接口 XI、 Χ2相联， 闭式泵 2 的回油口 Χ4接油箱 4的回油支管 1\, 闭式泵 2主油管接口 Α、 Β分别接液压 马达 6的人、 Β接口， 液压马达 6的泄油口接油箱 4的回油支管 Τ2; 在闭式泵 2主油管接口 Β与液压马达 6Β接口的管路上接有驱动压力传感器 20; 在闭式 泵 2内置补油泵出油口 Χ3与阻尼阀块 7相联的管路上接有补油压力信号传 感器 21 ; 在矿用索道液压驱动***上联接了液压张紧***， 所述的液压张紧 ***的连接关系为： 在电机 1上联接张紧油泵 3 , 在张紧油泵 3的吸油口与油 箱 4出油管相联， 张紧油泵 3出油口分别与溢流阀 12和张紧防爆三位四通电 磁换向阀 13的 Β油口相联， 溢流阀 12的出油口接油箱 4回油支管 Τ4, 张紧 防爆三位四通电磁换向间 13的 Τ油口经张紧节流阀 14a与液控单向阀 15相 联， 液控单向阀 15另一端分别与溢流阀 16、 张紧油缸 17a、 17b的有杆腔油 口相联， 溢流阀 16的另一端接油箱 4回油支管 T6, 张紧防爆三位四通电磁换 向阀 13的 Ρ油口经松开节流阀 14b分别与液控单向阀 15的控制油口、 张紧 油缸 17a、 17b的无杆腔油口相联， 张紧防爆三位四通电磁换向阀 13的 A油 口接油箱 4的回油支管 T5; 蓄能器 18联接张紧油缸 17a、 17b的有杆腔油口； 在液控单向阀 15出口端接有测量张紧油缸的压力信号传感器 22;在液压张紧 ***上联接液压制动***， 所述的液压制动***的连接关系为： 防爆二位四 通电磁阀 10的油口 B联接在液控单向阀 15与张紧油缸 17a、 17b的有杆腔之 间的油管上， 油口 A接油箱 4的回油支管 T3, 油口 Ρ与制动器油缸 11的无杆 腔油口相联， 油口 Τ封堵。
本发明的工作原理是：
***的起动：
启动电动机， 闭式泵 2运转， 闭式泵 2内置有主泵和补油泵， 闭式泵 2 的主泵由于张紧防爆三位四通电磁换向阀 8都未得电， 故主泵无液压油输出， 此时闭式泵 2的补油泵在低压下工作（ 2. 5MPa ),其消耗的电机功率非常小（约 为 2%的电机额定功率）， 我们可以认为电机属于空载启动。
***的运行和速度控制：
在电动机运转的条件下， 当驱动防爆三位四通电磁换向阀 8 左位电磁铁 得电时， 补油泵输出的压力油（2. 5Mpa )经阻尼孔板 7→驱动防爆三位四通电 磁换向阀 8的左位— 推动闭式泵 2泵内伺服阀运动到左位， 此时在闭式泵 2 的内置补油泵的压力油作用下→闭式泵 2的主泵的斜盘偏转 → 输出油流 → 液压马达 6运转， 从而驱动索道驱动轮旋转， 牵引钢丝绳运行。
当调节防爆比例溢流阀 9 时， 能改变阻尼孔板 7 以后的液压油压力， 从 而影响闭式泵 2 泵内伺服间的开度， 导致其上的压差发生变化， 由于进入闭 式泵 2 主泵内变量控制油缸的压力发生变化， 此压力与控制油缸内的弹簧作 用力平衡时， 主泵的斜盘位置固定， 从而使主泵的输出油流稳定， 保证了系 统运行速度的稳定， 改变驱动防爆三位四通电磁换 阀 8 的电流， ***的速 度随之变化。
当改由驱动防爆三位四通电磁换向阀 8 右位电磁铁通电时， ***将反向 运行， 其速度的调节仍由调节防爆比例溢流阀 9的电流来实现。 索道牵引钢丝绳的启动和停止时的加减速特性 （启动时速度从零加速到 设定运行速度， 停止时从运行速度减速到零的时间）， 由连接在防爆比例溢流 阀 9上的电压调节模块的输出特性决定。
安全保护措施
为了防止闭式泵 2 因缺油而损坏， 在闭式泵 2补油泵的压力油路上安装 了补油压力信号传感器 21 , 当补油压力低于 0. 8Mpa时， 压力传感器将此传 入计算机， 控制电动机停机。
液压张紧***的工作原理：
当张紧防爆三位四通电磁换向阀 13左位电磁铁得电， 则张紧油泵 3输出 的压力油流经过张紧防爆三位四通电磁换向阀 13的左位→一级节流阀 14a→ 液控单向阀 15→张紧油缸 17a、 17b的有杆腔→使张紧油缸 17a、 17b的活塞 杆收进， 此时张紧油缸 17a、 17b的无杆腔的回油经过二级节流阀 14b和张紧 防爆三位四通电磁换向阀 13的 A口上回油支管 T5回油箱 4。 张紧过程中张紧 力通过压力信号传感器 22检测， 并传入计算机， 当张紧力超过溢流闽 16的 调定值时， 溢流阀 16溢流使张紧力恒定在设定值。
当张紧防爆三位四通电磁换向阀 13的右位电磁铁得电时， 张紧油泵 3输 出压力油经过→张紧防爆三位四通电磁换向闽 13的右位→二级节流阀 14b→ 张紧油缸 17a、 17b的无杆腔→使张紧油缸 17a、 17b的活塞杆伸出， 从而降 低牵引钢丝绳的张紧力， 此时张紧油缸 17a、 17b有杆腔的回油经过液控单向 阀 15、一级节流阀 14a和张紧防爆三位四通电磁换向阀 13的 A口经回油支管 T5回油箱 4。
通过调节溢流阀 12可设定张紧油泵 3的工作压力； 一级节流闽 14a, 二 级 14b的作用是使得在张紧过程中张紧油缸 17a、 17b能缓慢平稳地移动； 液 控单向阀 15使得张紧油缸 17a、 17b保持恒定的工作压力。
液压制动***的工作原理：
防爆二位四通电磁阀 10用来控制液压制动器油缸 11 ,它在未通电的状态 下， 能使液压制动器油缸 11的液压油直接经回油支管 T3排入油箱 4， 索道是 制动状态。 当索道运行时， 防爆二位四通电磁阀 10的电磁铁通电， 液压制动 器油缸 11活塞杆在压力油的作用下， 将制动闸打开， 索道启动运行。

Claims

权 利 要 求 书
1、 一种矿用索道液压驱动***， 包括电机 [ 1 ]、 闭式泵 [ 2]、 液压驱动 ***， 其特征在于： 在电机 [ 1 ] 上联接闭式泵 [ 2 ], 在油箱 [ 4 ] 的出油管 上有过滤器 [ 5 ], 在油箱 [ 4 ] 的回油管上接散热器 [ 19 ], 所述的液压驱动 ***的连接关系为： 闭式泵 [2 ] 的进油口 S接油箱 [ 4] 的出油管， 闭式泵
[2] 内置补油泵出油口 X3 与阻尼阀块 [7]相联， 阻尼阀块 [7] 的另一端 分别与驱动防爆三位四通电磁换向阀 [ 8 ] 的 P 油口和防爆比例溢流阀 [9] 相联，防爆比例溢流阀 [ 9 ]的另一端分别与驱动防爆三位四通电磁换向阀 [ 8 ] 的 T油口和油箱 [ 4]的回油支管 T2联接； 驱动防爆三位四通电磁换向阀 [ 8 ] 的 Α、 Β油口分别与闭式泵 [ 2 ]的变量控制油缸接口 XI、 Χ2相联， 闭式泵 [2] 的泄油口 Χ4接油箱 [ 4] 的回油支管 Τ1; 闭式泵 [2 ] 主油管接口 Α、 Β分别 接液压马达 [ 6] 的 Α、 Β接口， 液压马达 [ 6 ] 的泄油口接油箱 [4 ] 的回油 支管 Τ2。
2、 根据权利要求 1所述的一种矿用索道液压驱动***， 其特征在于： 在 闭式泵 [ 2 ]主油管接口 Β与液压马达 [ 6 ] Β接口的管路上接有驱动压力传感 器 [20]。
3、 根据杈利要求 1所述的一种矿用索道液压驱动***， 其特征在于： 在 闭式泵 [ 2 ] 内置补油泵出油口 Χ3与阻尼阀块 [ 7 ]相联的管路上接有补油压 力信号传感器 [ 21 ]。
4、 根据杈利要求 1所述的一种矿用索道液压驱动***， 其特征在于： 在 矿用索道液压驱动***上联接了液压张紧***， 所述的液压张紧***的连接 关系为： 在电机 [ 1 ]上联接张紧油泵 [ 3], 在张紧油泵 [ 3 ] 的吸油口与油 箱 [ 4 ] 出油管相联， 张紧油泵 [ 3] 出油口分别与溢流阀 U2]和张紧防爆 三位四通电磁换向阀 [ 13]的 Β油口相联， 溢流阀 [ 12]的出油口接油箱 [ 4] 回油支管 Τ4,张紧防爆三位四通电磁换向阓[ 13 ]的 Τ油口经张紧节流阀 [ 14a ] 与液控单向阀 [ 15 ]相联， 液控单向阀 [ 15 ]另一端分别与溢流阀 [ 16]、 张 紧油缸 [17a]、 [17b]的有杆腔油口相联， 溢流阀 [ 16 ] 的另一端接油箱 [ 4 ] 回油支管 T6,张紧防爆三位四通电磁换向阀[ 13 ]的 Ρ油口经松开节流阀 [ 14b ] 分别与液控单向阀 [ 15 ] 的控制油口、 张紧油缸 [17a]、 [17b]的无杆腔油口 相联， 张紧防爆三位四通电磁换向阅 [ 13] 的 A油口接油箱 [ 4] 的回油支管 T5。
5、 根据杈利要求 4所述的一种矿用索道液压驱动***， 其特征在于： 蓄 能器 [ 18 ]联接张紧油缸 [17a]、 [17b]的有杆腔油口。
6、 根据权利要求 4所述的一种矿用索道液压驱动***， 其特征在于： 在 液控单向阀 [ 15 ] 出口端接有测量张紧油缸的压力信号传感器 [22]。
7、 根据权利要求 4所述的一种矿用索道液压驱动***， 其特征在于， 在 液压张紧***上联接液压制动*** , 所述的液压制动***的连接关系为: 防 爆二位四通电磁阀 [ 10]的油口 B联接在液控单向阀 [ 15 ]与张紧油缸 [Ha]、 [17b]的有杆腔之间的油管上， 油口 A接油箱 [ 4] 的回油支管 T3, 油口 Ρ与 制动器油缸 [ 111的无杆腔油口相联， 油口 Τ封堵。
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