CN103253253B - A kind of split type multi-axial cord hydraulic pressure bogie hydraulic brake system - Google Patents
A kind of split type multi-axial cord hydraulic pressure bogie hydraulic brake system Download PDFInfo
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- CN103253253B CN103253253B CN201310138403.8A CN201310138403A CN103253253B CN 103253253 B CN103253253 B CN 103253253B CN 201310138403 A CN201310138403 A CN 201310138403A CN 103253253 B CN103253253 B CN 103253253B
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Abstract
本发明公开了一种分体式多轴线液压载重车液压制动系统，包括油箱、过滤器、液压泵、溢流阀、充液阀、手柄制动阀、一级蓄能器、截止阀、二级蓄能器、双回路踏板阀、单向阀、梭阀、流量放大器、变量马达及变量马达外挂制动器。本发明能够方便实现分体式车辆湿式行车与驻车制动，实现了两驾驶员任意时刻任一驾驶员对车辆行车制动的控制，响应时间快，制动距离短，两级充压结构，安全可靠，这种全液压控制的湿式制动适宜在煤矿巷道作业的车辆上使用。
The invention discloses a split-type multi-axis hydraulic truck hydraulic braking system, which includes a fuel tank, a filter, a hydraulic pump, an overflow valve, a liquid filling valve, a handle brake valve, a primary accumulator, a stop valve, a secondary Stage accumulator, double circuit pedal valve, one-way valve, shuttle valve, flow amplifier, variable motor and variable motor external brake. The invention can conveniently realize the wet driving and parking brake of the split vehicle, realize the control of the driving brake of the vehicle by any one of the two drivers at any time, has fast response time, short braking distance, and a two-stage pressure charging structure. Safe and reliable, this fully hydraulically controlled wet brake is suitable for use on vehicles operating in coal mine roadways.
Description
技术领域technical field
本发明涉及液压控制技术领域，特别涉及一种分体式多轴线液压载重车液压制动系统。The invention relates to the technical field of hydraulic control, in particular to a split type multi-axis hydraulic truck hydraulic brake system.
背景技术Background technique
目前，分体式多轴线液压载重车以其载重量大、自行驱动、运动灵活以及占用空间小等优点在煤矿巷道以及隧道开挖等工况中广泛应用。分体式多轴线液压载重车通常是由前后两个驾驶员协同控制动力源车和多轴线平板车，这种车辆主要有以下两种行车制动方式：一种是不额外配置制动系统，仅利用闭式液压驱动系统的惯性特性来制动；另一种是利用普通的液压制动阀控制湿式制动机构来制动。这两种制动方式都是由单驾驶员来操作，当非制动驾驶员发现危险来不及提醒制动时，很容易发生意外情况，由此产生安全隐患；另外，两种制动方式响应时间较长，制动距大，安全可靠性差。At present, split multi-axis hydraulic trucks are widely used in coal mine roadways and tunnel excavation due to their advantages of large load capacity, self-driving, flexible movement and small footprint. The split multi-axis hydraulic truck is usually controlled by two drivers at the front and rear, the power source vehicle and the multi-axis flatbed truck. This type of vehicle mainly has the following two driving braking methods: one is not equipped with an additional braking system, only using The inertia characteristic of the closed hydraulic drive system is used to brake; the other is to use the ordinary hydraulic brake valve to control the wet brake mechanism to brake. These two braking methods are operated by a single driver. When the non-braking driver finds danger and it is too late to remind the brakes, accidents are likely to occur, resulting in potential safety hazards; in addition, the response time of the two braking methods It is longer, the braking distance is large, and the safety and reliability are poor.
发明内容Contents of the invention
本发明的目的在于克服上述不足，提供一种新型分体式多轴线液压载重车液压制动系统，该系统可以方便实现驻车制动与行车制动，其中前后两驾驶员均可实现对行车制动的控制，两级蓄能器充液结构以及湿式制动机构前设置的流量放大器充分保证了行车制动的安全可靠。The purpose of the present invention is to overcome the above disadvantages and provide a novel hydraulic brake system for split multi-axis hydraulic trucks. The dynamic control, the two-stage accumulator liquid filling structure and the flow amplifier installed in front of the wet brake mechanism fully guarantee the safety and reliability of the service brake.
为了解决上述存在的技术问题，本发明是通过以下技术方案实现的：In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:
一种分体式多轴线液压载重车液压制动系统，包括油箱、过滤器、液压泵、溢流阀、充液阀、手柄制动阀、一级蓄能器、截止阀、二级蓄能器、双回路踏板阀、单向阀、梭阀、流量放大器、变量马达及变量马达外挂制动器；A split type multi-axis hydraulic truck hydraulic braking system, including a fuel tank, a filter, a hydraulic pump, an overflow valve, a liquid filling valve, a handle brake valve, a primary accumulator, a shut-off valve, and a secondary accumulator , double-circuit pedal valve, one-way valve, shuttle valve, flow amplifier, variable motor and variable motor external brake;
所述液压泵的进油口通过过滤器与油箱相连接，其出口连接有溢流阀，所述液压泵的出口分别与充液阀和手柄制动阀的进油口相连接；The oil inlet of the hydraulic pump is connected to the oil tank through a filter, and the outlet of the hydraulic pump is connected to the overflow valve, and the outlet of the hydraulic pump is respectively connected to the oil inlet of the filling valve and the handle brake valve;
所述变量马达外挂制动器安装在变量马达上，变量马达外挂制动器上有驻车制动油口和行车制动油口；The external brake of the variable motor is installed on the variable motor, and the external brake of the variable motor has a parking brake oil port and a service brake oil port;
所述手柄制动阀的出口与变量马达外挂制动器的驻车制动油口相连接；The outlet of the handle brake valve is connected to the parking brake oil port of the external brake of the variable motor;
所述充液阀的出口与双回路踏板阀的进油口相连接，所述充液阀的出口与双回路踏板阀的进油口之间连接有一级蓄能器，所述充液阀的出口与流量放大器的进油口相连接；The outlet of the filling valve is connected to the oil inlet of the dual-circuit pedal valve, and a primary accumulator is connected between the outlet of the filling valve and the oil inlet of the dual-circuit pedal valve. The outlet is connected with the oil inlet of the flow amplifier;
所述流量放大器的进油口连接有二级蓄能器，所述流量放大器的出口与变量马达外挂制动器的行车制动油口相连接；The oil inlet of the flow amplifier is connected with a secondary accumulator, and the outlet of the flow amplifier is connected with the service brake oil port of the external brake of the variable motor;
所述双回路踏板阀的出口经过梭阀连接流量放大器的控制口；使双回路踏板阀的出口压力经过梭阀比较后进入流量放大器的控制口，这样在车辆行驶中任一驾驶员操作双回路踏板阀都能够产生行车制动；The outlet of the dual-circuit pedal valve is connected to the control port of the flow amplifier through the shuttle valve; the outlet pressure of the dual-circuit pedal valve enters the control port of the flow amplifier after being compared with the shuttle valve, so that any driver operates the dual-circuit Pedal valves are capable of generating service brakes;
所述一级蓄能器、二级蓄能器的进油口均连接有常开状态的截止阀；The oil inlets of the first-stage accumulator and the second-stage accumulator are connected with normally open cut-off valves;
所述充液阀、手柄制动阀、双回路踏板阀和流量放大器的回油口均与油箱相连接；The oil return ports of the liquid filling valve, the handle brake valve, the double circuit pedal valve and the flow amplifier are all connected to the oil tank;
所述充液阀的进油口与出口之间安装有单向阀。这是为充分保证在充液阀故障或连续制动过程中的快速充液。A one-way valve is installed between the oil inlet and the outlet of the filling valve. This is to fully ensure rapid filling during filling valve failure or continuous braking.
采用两级蓄能器能保证在液压泵不工作的情况下车辆仍足以进行多次行车制动。The use of a two-stage accumulator can ensure that the vehicle is still sufficient for multiple service brakes when the hydraulic pump is not working.
当手柄制动阀切断进入变量马达外挂制动器驻车制动油口的高压油时为驻车制动状态，油液经过充液阀进入一级蓄能器和二级蓄能器中完成充液，充液完成后再经过充液阀的出口回油箱；当手柄制动阀动作解除驻车制动时，其中一个双回路踏板阀动作时，一级蓄能器中的高压油进入双回路踏板阀中，经过梭阀进入流量放大器的控制口进行行车制动。When the handle brake valve cuts off the high-pressure oil entering the parking brake oil port of the variable motor external brake, it is in the parking brake state, and the oil enters the primary accumulator and the secondary accumulator through the filling valve to complete the filling. , and then return to the oil tank through the outlet of the filling valve after the filling is completed; when the handle brake valve is activated to release the parking brake, and one of the dual-circuit pedal valves is activated, the high-pressure oil in the primary accumulator enters the dual-circuit pedal In the valve, it enters the control port of the flow amplifier through the shuttle valve for service braking.
由于采用上述技术方案，本发明提供的一种分体式多轴线液压载重车液压制动系统与现有技术相比，具有这样的益效果：Due to the adoption of the above technical solution, compared with the prior art, a split multi-axis hydraulic truck hydraulic braking system provided by the present invention has the following beneficial effects:
（1）本发明可以方便实现相对独立两车的驻车制动与行车制动，前后两驾驶员在任意时刻均可实现对车辆行车制动的控制；(1) The present invention can conveniently realize the parking brake and service brake of two relatively independent vehicles, and the front and rear drivers can control the vehicle service brake at any time;
（2）两级蓄能器充液结构保证在液压泵停止工作的情况下也能实现车辆的平稳停车；(2) The two-stage accumulator liquid filling structure ensures that the vehicle can be stopped smoothly even when the hydraulic pump stops working;
（3）制动器前设置的流量放大器充分保证了制动的快速响应，只要在多轴线液压载重车中增加流量放大器与制动器的数量，就可实现大吨位车辆理想的行车制动；(3) The flow amplifier installed in front of the brake fully guarantees the fast response of the brake. As long as the number of flow amplifiers and brakes is increased in the multi-axis hydraulic truck, the ideal service braking of large-tonnage vehicles can be realized;
（4）由单向阀与充液阀并联组成的蓄能器充压结构，安全可靠；(4) The accumulator charging structure composed of a one-way valve and a filling valve in parallel is safe and reliable;
（5）全液压控制的湿式制动更适宜在煤矿巷道作业的车辆上使用。(5) The fully hydraulically controlled wet brake is more suitable for use on vehicles operating in coal mine roadways.
附图说明Description of drawings
图1为本发明一种分体式多轴线液压载重车液压制动控制系统的液压示意图。Fig. 1 is a hydraulic schematic diagram of a hydraulic braking control system of a split multi-axis hydraulic truck according to the present invention.
其中：1、油箱，2、过滤器，3、液压泵，4、溢流阀，5、充液阀，6、手柄制动阀，7、一级蓄能器，8、截止阀，9、二级蓄能器，10、双回路踏板阀，11、单向阀，12、液压表，13、梭阀，14、流量放大器，15、变量马达，16、变量马达外挂制动器，17、轮胎，D1、驻车制动油口，D2、行车制动油口，A、变量马达工作口，B、变量马达工作口，C、变量马达泄漏口。Among them: 1. Fuel tank, 2. Filter, 3. Hydraulic pump, 4. Relief valve, 5. Filling valve, 6. Handle brake valve, 7. Primary accumulator, 8. Stop valve, 9. Secondary accumulator, 10, double circuit pedal valve, 11, one-way valve, 12, hydraulic pressure gauge, 13, shuttle valve, 14, flow amplifier, 15, variable motor, 16, variable motor external brake, 17, tire, D1, parking brake oil port, D2, service brake oil port, A, variable motor working port, B, variable motor working port, C, variable motor leakage port.
具体实施方案specific implementation plan
下面结合附图与具体实施方式对本发明作进一步详细描述：Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
如图1所示，本发明一种分体式多轴线液压载重车液压制动系统，包括油箱1、过滤器2、液压泵3、溢流阀4、充液阀5、手柄制动阀6、一级蓄能器7、截止阀8、二级蓄能器9、双回路踏板阀10、单向阀11、梭阀13、流量放大器14、变量马达15及变量马达外挂制动器16，所述液压泵3的进油口通过过滤器2与油箱1相连接，所述液压泵3的出口连接有安全保护作用的溢流阀4，所述液压泵3的出口分别与充液阀5和手柄制动阀6的进油口相连接，所述手柄制动阀6的出口与变量马达外挂制动器16的驻车制动油口D1相连接，所述充液阀5的出口与双回路踏板阀10的进油口相连接，所述充液阀5的出口与双回路踏板阀10的进油口之间连接有一级蓄能器7，所述充液阀5的出口与流量放大器14的进油口相连接，所述流量放大器14的蓄能器接口连接有二级蓄能器9，所述流量放大器14的出口与变量马达外挂制动器16的行车制动油口D2相连接，所述双回路踏板阀10的出口经过梭阀13连接流量放大器14的控制口，车辆行驶中任一驾驶员操作双回路踏板阀10都能够行车制动，所述蓄能器的进油口均连接有为常开状态的截止阀8，所述充液阀5、手柄制动阀6、双回路踏板阀10和流量放大器14的回油口均与油箱1相连接。As shown in Figure 1, a hydraulic braking system of a split multi-axis hydraulic truck in the present invention includes a fuel tank 1, a filter 2, a hydraulic pump 3, an overflow valve 4, a filling valve 5, a handle brake valve 6, Primary accumulator 7, stop valve 8, secondary accumulator 9, double circuit pedal valve 10, check valve 11, shuttle valve 13, flow amplifier 14, variable motor 15 and variable motor external brake 16, the hydraulic pressure The oil inlet of the pump 3 is connected with the oil tank 1 through the filter 2, the outlet of the hydraulic pump 3 is connected with a safety relief valve 4, and the outlet of the hydraulic pump 3 is connected with the filling valve 5 and the handle system respectively. The oil inlet of the moving valve 6 is connected, the outlet of the handle brake valve 6 is connected with the parking brake oil port D1 of the variable motor external brake 16, and the outlet of the liquid charging valve 5 is connected with the double circuit pedal valve 10 The oil inlet of the liquid charging valve 5 is connected with the oil inlet of the dual circuit pedal valve 10, and the primary accumulator 7 is connected between the outlet of the liquid charging valve 5 and the oil inlet of the flow amplifier 14. The accumulator interface of the flow amplifier 14 is connected with the secondary accumulator 9, the outlet of the flow amplifier 14 is connected with the service brake oil port D2 of the variable motor external brake 16, and the double circuit The outlet of the pedal valve 10 is connected to the control port of the flow amplifier 14 through the shuttle valve 13, and any driver operating the dual-circuit pedal valve 10 can brake the vehicle while the vehicle is running. The cut-off valve 8 in the open state, the oil return port of the filling valve 5 , the handle brake valve 6 , the double circuit pedal valve 10 and the flow amplifier 14 are all connected with the oil tank 1 .
所述变量马达外挂制动器16安装在变量马达15上，变量马达外挂制动器16上有驻车制动油口D1和行车制动油口D2。The variable motor external brake 16 is installed on the variable motor 15, and the variable motor external brake 16 has a parking brake oil port D1 and a service brake oil port D2.
所述一级蓄能器、二级蓄能器的进油口均连接有常开状态的截止阀；在液压泵3不工作的情况下，两级蓄能器仍能使车辆足以进行多次驻、行车制动。The oil inlets of the first-stage accumulator and the second-stage accumulator are connected with shut-off valves in a normally open state; when the hydraulic pump 3 is not working, the two-stage accumulator can still enable the vehicle to carry out multiple operations. Parking and service brakes.
所述充液阀5的进油口与出口之间安装有单向阀11，充分保证在充液阀5故障或连续制动过程中的快速充液。A one-way valve 11 is installed between the oil inlet and the outlet of the filling valve 5, which fully guarantees rapid liquid filling during the failure of the filling valve 5 or continuous braking.
所述手柄制动阀6切断进入变量马达外挂制动器16驻车制动油口D1的高压油时为驻车制动状态，油液经过充液阀5进入一级蓄能器7和二级蓄能器9中完成充液，充液完成后再经过充液阀5的出口回油箱1；当手柄制动阀6动作解除驻车制动时，其中一个双回路踏板阀10动作时，一级蓄能器7中的高压油进入双回路踏板阀10中，经过梭阀13进入流量放大器14的控制口进行行车制动。When the handle brake valve 6 cuts off the high-pressure oil entering the parking brake oil port D1 of the variable motor external brake 16, it is in the parking brake state, and the oil enters the primary accumulator 7 and the secondary accumulator through the filling valve 5. The liquid filling is completed in the energy device 9, and then the liquid is returned to the fuel tank 1 through the outlet of the filling valve 5; The high-pressure oil in the accumulator 7 enters the dual-circuit pedal valve 10, and enters the control port of the flow amplifier 14 through the shuttle valve 13 for service braking.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104632728A (en) * | 2014-12-08 | 2015-05-20 | 燕山大学 | Automatic coupling liquid filling system for multiple executing mechanisms |
| CN106314405B (en) * | 2016-09-17 | 2023-03-14 | 西安科技大学 | Hydraulic braking system and method for large-tonnage mining vehicle |
| CN108859779B (en) * | 2018-05-11 | 2020-07-03 | 中国煤炭科工集团太原研究院有限公司 | Electro-hydraulic coupling braking system of alternating-current variable-frequency electric-driven transport vehicle and control method |
| CN113859212A (en) * | 2021-11-15 | 2021-12-31 | 南京恒天领锐汽车有限公司 | Explosion-proof pure electric SUV full hydraulic braking system with multiple safety guarantees |
| CN116588061A (en) * | 2023-05-31 | 2023-08-15 | 东风商用车有限公司 | Electric power-assisted hydraulic braking system, vehicle and control method of electric power-assisted hydraulic braking system |
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