WO2013023452A1 - Double-steel-wheel road roller and its variable frequency vibration control device - Google Patents
Double-steel-wheel road roller and its variable frequency vibration control device Download PDFInfo
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- WO2013023452A1 WO2013023452A1 PCT/CN2012/073886 CN2012073886W WO2013023452A1 WO 2013023452 A1 WO2013023452 A1 WO 2013023452A1 CN 2012073886 W CN2012073886 W CN 2012073886W WO 2013023452 A1 WO2013023452 A1 WO 2013023452A1
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- vibration
- variable frequency
- control device
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- frequency vibration
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
Definitions
- Double steel wheel road roller and variable frequency vibration control device thereof Double steel wheel road roller and variable frequency vibration control device thereof
- the invention relates to the technical field of engineering machinery, in particular to a variable frequency vibration control device for a double drum compactor.
- the present invention also relates to a twin drum compactor having the above-described variable frequency vibration control device.
- the vibration hydraulic circuit is an important part of the hydraulic system of the vibratory roller. Its performance determines the range of use and compaction of the vibratory roller.
- the actuator in the vibrating hydraulic circuit is a vibrating hydraulic motor that directly drives the vibrating shaft (ie, the central axis of the vibrating wheel).
- the vibration shaft drives a group of eccentric blocks on the high-speed rotation to generate centrifugal force, forcing the vibration wheel to generate 4 ⁇ large shock impact force on the ground, forming an impact pressure wave, propagating to the inner layer of the earth, causing the pressure to be pressed.
- the layer particles vibrate or resonate to achieve the desired compaction purpose.
- the loop system of the above two schemes can control the actuator to operate in three modes, namely, all-wheel vibration, front wheel vibration and rear wheel vibration.
- all-wheel vibration When the roller is operated in all-wheel vibration, it is subjected to The influence of factors such as motor volumetric efficiency, pipeline pressure loss and time difference, the vibration frequency of the front and rear wheels is slightly different by 5%, which is prone to "beating vibration” and affecting the quality of pavement construction.
- different vibration frequency and amplitude should be used to generate appropriate excitation force and compaction energy to obtain the best compaction effect, and the vibration frequency of the above two schemes remains basically unchanged, thus limiting the roller The scope of use.
- the invention provides a variable frequency vibration control for a double drum compactor. Device.
- the variable frequency vibration control device includes a first vibration motor and a second vibration motor connected in series with each other, wherein the first vibration motor has a first branching branch connected in parallel, and the first branching branch can be changed to flow through the first vibration motor
- the flow of the second vibration motor has a second branching branch in parallel, and the second branching branch can change the flow rate through the second vibration motor.
- the first branching branch includes a first control proportional valve and a first control solenoid valve connected in series with each other.
- the second branching branch comprises a second control proportional valve and a second control solenoid valve connected in series with each other.
- the first vibration motor and the second vibration motor are both quantitative motors.
- the first control proportional valve and the second control proportional valve are both adjustable two-position two normally open type solenoid valves, and the first control solenoid valve and the second control solenoid valve are both Two normally closed solenoid valves.
- variable frequency vibration control device further includes a flushing circuit connected to the oil pipelines of the first vibration motor and the second vibration motor, the flushing circuit including an associated flushing valve and a throttle
- the flushing valve is a pilot three-position three-way reversing valve.
- variable frequency vibration control device further includes a pressure tapping joint for measuring the pressure of the inlet and outlet ports of the respective components.
- the present invention also provides a twin drum compactor having the above-described variable frequency vibration control device.
- the roller provided by the invention and the variable frequency vibration control device thereof the flow through the first vibration motor and the second vibration motor can be adjusted through the first branching branch and the second branching branch, respectively, thereby changing the first vibration motor And the rotation speed of the second vibration motor, thereby changing the vibration frequency of the front and rear wheels of the roller, and realizing the stepless adjustment of the vibration frequency of the front and rear wheels, not only avoiding the phenomenon of "beating vibration", improving the construction quality of the road surface, but also making the construction environment according to the needs of the working environment.
- the vibration circuit adjusts the frequency of the front and rear wheels at any time to achieve various working states (multi-frequency double-frame;), which expands the range of use of the roller; Compared with the prior art, the pressure can be increased according to different working frequencies.
- the road function reduces the energy consumption, helps to lower the heat balance temperature, and improves the reliability of the hydraulic system.
- the present invention can adopt a single pump and a double-quantity motor to form a vibration circuit, the cost is low, and the space is occupied. Less, convenient pipeline layout.
- FIG. 1 is a partial structural schematic view of a variable frequency vibration control device for a double drum compactor according to an embodiment of the present invention.
- FIG. 1 is a partial structural schematic view of a variable frequency vibration control device for a double drum compactor according to an embodiment of the present invention.
- variable frequency vibration control device of this embodiment includes a pressure measuring joint 1, a relief valve 2, a front vibration motor 3, a rear vibration motor 4, a rear control proportional valve 5, a front control proportional valve 6, and a rear control solenoid valve. 7.
- the front vibration motor 3 and the rear vibration motor 4 are both bidirectional quantitative motors.
- the output shaft of the front vibration motor 3 can drive the eccentric block on the vibration shaft of the front wheel of the roller to rotate at a high speed, so that the front wheel of the roller rotates according to the frequency, so that the rear wheel of the roller is followed.
- the frequency f2 is vibrated.
- the displacement of the quantitative motor is constant, and the rotational speed of the output shaft is equal to the flow rate flowing through the motor divided by the displacement, so the front wheel vibration frequency fl is determined by the flow rate of the vibrating motor 3 before flowing.
- the rear wheel vibration frequency f2 is determined by the flow rate of the vibration motor 4 after flowing through;
- the front vibration motor 3 and the rear vibration motor 4 are connected in series with each other, and the front vibration motor 3 is connected in parallel with a first branching branch, and the first branching branch pre-control proportional valve 6 and the front control solenoid valve 8 are connected in series,
- the first branching branch is used for diverting the flow rate of the front vibrating motor 3, thereby changing the rotational speed of the front vibrating motor 3, thereby changing the vibration frequency of the front wheel of the roller, and the rear vibrating motor 4 is connected with the second diverting branch in parallel.
- the two-way branch routing control proportional valve 5 and the rear control solenoid valve 7 are formed in series, and the second branching branch is used to divide the flow rate of the rear vibration motor 4 Flow, thereby changing the rotational speed of the rear vibrating motor 4, thereby changing the vibration frequency of the rear wheel of the roller, and a safety relief valve 2 is connected to the pipeline between the front vibrating motor 3 and the rear vibrating motor 4;
- the oil supply lines of the front vibration motor 3 and the rear vibration motor 4 are also respectively connected to a flushing circuit, which includes a flushing valve 9 and an orifice 10, and the flushing circuit can make the oil portion of the closed circuit flow out (the flow rate is affected by The restriction of the orifice 10) participates in the external circulation, thereby taking away a part of the heat, reducing the heat generation, lowering the heat balance temperature, and improving the cooling effect;
- an oil replenishing system is also provided (not shown) ), because the flushing circuit takes away part of the oil, and there is inevitably a
- the front control proportional valve 6 and the rear control proportional valve 5 are both adjustable two-position two normally open type solenoid valves, and the front control solenoid valve 8 and the rear control solenoid valve 7 are both two-position two normally closed solenoid valves.
- the flushing valve 9 is a pilot three-position three-way reversing valve.
- variable frequency vibration control device has four working modes, and the operating principles of the four working modes are as follows:
- All-wheel fixed-frequency vibration mode The rear control proportional valve 5, the front control proportional valve 6, the rear control solenoid valve 7 and the front control solenoid valve 8 are all unpowered, flow through the front vibration motor 3 and flow through the vibration motor The flow rate of 4 is equal, the vibration frequency of the front and rear wheels of the roller is a fixed value, and the relief valve 2 plays a safe role to protect the motor from overload or jam.
- the front wheel variable frequency vibration The front control proportional valve 6, the rear control solenoid valve 7 and the front control solenoid valve 8 are all energized, and the rear control proportional valve 5 is not energized, and can be changed by controlling the current of the proportional valve 6 before adjusting.
- the flow rate of the front vibrating motor 3 flows, so that the vibration frequency of the front wheel of the roller changes accordingly.
- the smaller the current the larger the opening of the valve of the front control proportional valve 6, and the smaller the flow rate of the front vibrating motor 3, the front wheel of the roller
- the smaller the vibration frequency the opposite is true;
- the rear wheel variable frequency vibration the rear control proportional valve 5, the rear control solenoid valve 7 and the front control solenoid valve 8 are both energized, the front control proportional valve 6 is not electric, can be changed by adjusting the current of the proportional valve 5 after adjustment After flowing through the flow of the vibration motor 4, the vibration frequency of the rear wheel of the roller is changed accordingly.
- the smaller the current the larger the opening of the valve of the proportional control valve 5, and the smaller the flow rate of the vibration motor 4 after flowing, the rear wheel of the roller
- the smaller the vibration frequency the opposite is true; 4.
- All-wheel variable frequency vibration The rear control proportional valve 5, the front control proportional valve 6, the rear control solenoid valve 7 and the front control solenoid valve 8 are all energized, and the proportional proportional valve 5 and the front control proportional valve 6 can be controlled by changing.
- the current is used to change the flow rate of the vibrating motor 3 before flowing through and the flow rate of the vibrating motor 4 after flowing through, so that the vibration frequency of the front and rear wheels of the roller changes accordingly, and the front and rear wheels can have different vibration frequencies according to environmental requirements to obtain the best.
- the compaction effect is used to change the flow rate of the vibrating motor 3 before flowing through and the flow rate of the vibrating motor 4 after flowing through, so that the vibration frequency of the front and rear wheels of the roller changes accordingly, and the front and rear wheels can have different vibration frequencies according to environmental requirements to obtain the best. The compaction effect.
- a vibration single pump (not shown) may be used to connect the front vibration motor 3 and the rear vibration motor 4 to form a closed circuit, or a double pump may be used to respectively connect the front vibration motor 3 and the rear vibration.
- the motor 4 constitutes a closed circuit, but in order to reduce the cost and occupy a small space for convenient arrangement, a vibration single pump (for example, a two-point variable single pump) and a dual motor can be preferred.
- the relief valve 2, the front control proportional valve 6, the front control solenoid valve 8, the rear control proportional valve 5, the rear control solenoid valve 7, the flush valve 9 and the orifice 10 may be It is replaced by other valves that can achieve the corresponding functions, and the specific form is not limited to the structure shown in the drawings.
- both the front vibration motor 3 and the rear vibration motor are two-way quantitative motors, that is, the inlet and outlet ports A and B can be interchanged to change the steering of the output shaft, thereby realizing the frequency change of the same steering and different steering of the front and rear wheels.
- variable frequency vibration control device of the above embodiment may further include a pressure measuring joint 1 (see the pressure measuring point M in the figure) for measuring Al, A2, Bl, B2, P1, P2, L and R. Pressure and display it through the meter.
- a variable frequency vibration control device for a double drum compactor controls a pre-vibration motor/post-vibration motor by paralleling a shunt branch for each of a front vibration motor and a rear vibration motor connected in series
- the flow rate controls the vibration frequency of the front/rear wheels of the roller, and realizes the stepless adjustment of the vibration frequency of the front and rear wheels, which not only eliminates the phenomenon of "beating vibration", but also helps to improve the driver's operational comfort and the reliability and pressure of the roller.
- the vibration circuit can adjust the frequency of the front and rear wheels at any time, realize a variety of working states (multi-frequency double-amplitude), and expand the use range of the roller; since different vibration frequencies can be adopted according to different working environments, Improves the efficiency of the pressure circuit, reduces energy consumption, and helps to lower the heat balance temperature and improve the reliability of the hydraulic system.
- the embodiment of the present invention further provides a double drum compactor, which has the above-mentioned variable frequency vibration control device. Since the above-mentioned variable frequency vibration control device has the above technical effects, the double steel having the variable frequency vibration control device The roller compactor should also have corresponding technical effects, and the specific implementation process is similar to the above embodiment, and will not be described again.
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Abstract
A variable frequency vibration control device for a double-steel-wheel road roller comprises a first vibration motor and a second vibration motor in series connected with each other. The first vibration motor and the second vibration motor are respectively in parallel connected to a first shunt branch circuit and a second shunt branch circuit. The flow flowing through the vibration motors can be changed by the shunt branch circuits, and then the vibration frequency of the vibration motors is changed. A double-steel-wheel road roller with the variable frequency vibration control device is also disclosed. The vibration frequency of the vibration motors can be adjusted via the variable frequency vibration control device whenever necessary so as to achieve various operating modes.
Description
一种双钢轮压路机及其变频振动控制装置 Double steel wheel road roller and variable frequency vibration control device thereof
本申请要求于 2011 年 08 月 17 日提交中国专利局、 申请号为 201110234963.4、 发明名称为"一种双钢轮压路机及其变频振动控制装置" 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。 This application claims priority to Chinese Patent Application No. 201110234963.4, entitled "A Double Steel Roller and Its Variable Frequency Vibration Control Device", filed on August 17, 2011, the entire contents of which are hereby incorporated by reference. Combined in this application.
技术领域 Technical field
本发明涉及工程机械技术领域， 特别是涉及一种用于双钢轮压路机的 变频振动控制装置。 本发明还涉及一种具有上述变频振动控制装置的双钢 轮压路机。 The invention relates to the technical field of engineering machinery, in particular to a variable frequency vibration control device for a double drum compactor. The present invention also relates to a twin drum compactor having the above-described variable frequency vibration control device.
背景技术 Background technique
振动液压回路是振动压路机液压系统中的一个重要组成部分， 其性能 决定振动压路机的使用范围和压实效果。 振动液压回路中的执行机构为振 动液压马达， 直接驱动振动轴（即振动轮的中心轴）。 压路机作业时， 振动 轴带动其上的一组偏心块高速旋转产生离心力， 强迫振动轮对地面产生 4艮 大的激振沖击力， 形成沖击压力波， 向地表内层传播， 引起被压层颗粒振 动或者产生共振， 达到预期的压实目的。 The vibration hydraulic circuit is an important part of the hydraulic system of the vibratory roller. Its performance determines the range of use and compaction of the vibratory roller. The actuator in the vibrating hydraulic circuit is a vibrating hydraulic motor that directly drives the vibrating shaft (ie, the central axis of the vibrating wheel). When the roller is working, the vibration shaft drives a group of eccentric blocks on the high-speed rotation to generate centrifugal force, forcing the vibration wheel to generate 4 激 large shock impact force on the ground, forming an impact pressure wave, propagating to the inner layer of the earth, causing the pressure to be pressed. The layer particles vibrate or resonate to achieve the desired compaction purpose.
目前， 国内外用于双钢轮压路机的控制形式大多采用闭式液压系统， 主要有以下两种方案： 1、 由两点变量单泵、 双定量马达（与单泵串联）和 电磁阀组成单回路系统， 由于不能根据路况条件采用相应的振动频率， 该 方案的压路功效低， 耗能大， 且容易导致液压系统的热平衡温度过高， 降 低可靠性； 2、 两点变量双泵与双定量马达组成双回路振动系统， 相对方案 1 而言， 独立性较好， 但也具有上述缺陷， 且成本较高， 占用空间较多， 管路布置较难。 At present, most of the control modes for double drum compactors at home and abroad use closed hydraulic systems. There are two main schemes: 1. Two-point variable single-pump, double-quantity motor (in series with single pump) and solenoid valve Because the system can't use the corresponding vibration frequency according to the road conditions, the scheme has low pressure-resistance and high energy consumption, and it is easy to cause the thermal equilibrium temperature of the hydraulic system to be too high and reduce reliability. 2. Two-point variable double pump and double quantification The motor forms a two-circuit vibration system. Compared with the scheme 1, the independence is better, but it also has the above-mentioned defects, and the cost is high, the space is occupied, and the pipeline arrangement is difficult.
此外， 上述两种方案的回路系统通过控制执行机构， 均可使压路机工 作在三种模式下， 即全轮振动、 前轮振动和后轮振动， 当压路机工作于全 轮振动时， 其由于受到马达容积效率、 管路压力损失及时间差等因素的影 响， 前后轮的振动频率略有 5%差异， 容易出现 "拍振" 现象， 影响路面 施工质量； 另外， 对于不同的压实材料和铺筑层厚度， 应采用不同的振动 频率和振幅，从而产生适当的激振力及压实能量， 以获得最佳的压实效果， 而上述两种方案的振动频率基本保持不变，如此限制了压路机的使用范围。 发明内容
有鉴于此， 为了实现前后轮振动频率的无级调节， 既避免出现 "拍振" 现象， 也拓展压路机的使用范围， 一方面， 本发明提供了一种用于双钢轮 压路机的变频振动控制装置。 In addition, the loop system of the above two schemes can control the actuator to operate in three modes, namely, all-wheel vibration, front wheel vibration and rear wheel vibration. When the roller is operated in all-wheel vibration, it is subjected to The influence of factors such as motor volumetric efficiency, pipeline pressure loss and time difference, the vibration frequency of the front and rear wheels is slightly different by 5%, which is prone to "beating vibration" and affecting the quality of pavement construction. In addition, for different compacting materials and paving Layer thickness, different vibration frequency and amplitude should be used to generate appropriate excitation force and compaction energy to obtain the best compaction effect, and the vibration frequency of the above two schemes remains basically unchanged, thus limiting the roller The scope of use. Summary of the invention In view of this, in order to realize the stepless adjustment of the vibration frequency of the front and rear wheels, the phenomenon of "beating vibration" is avoided, and the range of use of the road roller is also expanded. On the one hand, the invention provides a variable frequency vibration control for a double drum compactor. Device.
该变频振动控制装置包括相互串联的第一振动马达和第二振动马达， 其中， 所述第一振动马达并联有第一分流支路， 所述第一分流支路可改变 流经第一振动马达的流量， 所述第二振动马达并联有第二分流支路， 所述 第二分流支路可改变流经第二振动马达的流量。 The variable frequency vibration control device includes a first vibration motor and a second vibration motor connected in series with each other, wherein the first vibration motor has a first branching branch connected in parallel, and the first branching branch can be changed to flow through the first vibration motor The flow of the second vibration motor has a second branching branch in parallel, and the second branching branch can change the flow rate through the second vibration motor.
优选地， 所述第一分流支路包括相互串联的第一控制比例阀和第一控 制电磁阀。 Preferably, the first branching branch includes a first control proportional valve and a first control solenoid valve connected in series with each other.
优选地， 所述第二分流支路包括相互串联的第二控制比例阀和第二控 制电磁阀。 Preferably, the second branching branch comprises a second control proportional valve and a second control solenoid valve connected in series with each other.
优选地， 所述第一振动马达和所述第二振动马达均为定量马达。 Preferably, the first vibration motor and the second vibration motor are both quantitative motors.
优选地， 所述第一控制比例阀和所述第二控制比例阀均为可调式二位 二通常开型电磁阀， 所述第一控制电磁阀和所述第二控制电磁阀均为二位 二通常闭型电磁阀。 Preferably, the first control proportional valve and the second control proportional valve are both adjustable two-position two normally open type solenoid valves, and the first control solenoid valve and the second control solenoid valve are both Two normally closed solenoid valves.
优选地， 所述变频振动控制装置还包括与所述第一振动马达及所述第 二振动马达的输油管路相连的沖洗回路， 所述沖洗回路包括相连的沖洗阀 和节流孑 Preferably, the variable frequency vibration control device further includes a flushing circuit connected to the oil pipelines of the first vibration motor and the second vibration motor, the flushing circuit including an associated flushing valve and a throttle
优选地， 所述沖洗阀为先导式三位三通换向阀。 Preferably, the flushing valve is a pilot three-position three-way reversing valve.
优选地， 所述变频振动控制装置还包括用于测量各元件进出油口压强 的测压接头。 Preferably, the variable frequency vibration control device further includes a pressure tapping joint for measuring the pressure of the inlet and outlet ports of the respective components.
另一方面， 本发明还提供了一种具有上述变频振动控制装置的双钢轮 压路机。 In another aspect, the present invention also provides a twin drum compactor having the above-described variable frequency vibration control device.
本发明提供的一种压路机及其变频振动控制装置， 流经第一振动马达 和第二振动马达的流量可分别通过第一分流支路和第二分流支路进行调 节， 进而改变第一振动马达和第二振动马达的转速， 从而改变压路机前后 轮的振动频率， 实现前后轮振动频率的无级调节， 不仅可避免 "拍振"现 象， 提高了路面施工质量， 还可根据工作环境的需要使振动回路随时调整 前后轮的频率，实现多种工作状态（多频双幅；),拓展了压路机的使用范围，； 与现有技术相比， 由于可根据不同工作环境采用不同振动频率， 提高了压
路功效， 减小了能耗， 且有助于降低热平衡温度， 提高了液压系统的可靠 性， 另外， 由于本发明可采用单泵与双定量马达组成振动回路， 成本较低， 且占用空间较少， 方便管线布置。 The roller provided by the invention and the variable frequency vibration control device thereof, the flow through the first vibration motor and the second vibration motor can be adjusted through the first branching branch and the second branching branch, respectively, thereby changing the first vibration motor And the rotation speed of the second vibration motor, thereby changing the vibration frequency of the front and rear wheels of the roller, and realizing the stepless adjustment of the vibration frequency of the front and rear wheels, not only avoiding the phenomenon of "beating vibration", improving the construction quality of the road surface, but also making the construction environment according to the needs of the working environment. The vibration circuit adjusts the frequency of the front and rear wheels at any time to achieve various working states (multi-frequency double-frame;), which expands the range of use of the roller; Compared with the prior art, the pressure can be increased according to different working frequencies. The road function reduces the energy consumption, helps to lower the heat balance temperature, and improves the reliability of the hydraulic system. In addition, since the present invention can adopt a single pump and a double-quantity motor to form a vibration circuit, the cost is low, and the space is occupied. Less, convenient pipeline layout.
附图说明 DRAWINGS
图 1为本发明实施例所提供的一种用于双钢轮压路机的变频振动控制 装置的部分结构示意图。 1 is a partial structural schematic view of a variable frequency vibration control device for a double drum compactor according to an embodiment of the present invention.
具体实施方式 detailed description
为了使本领域技术人员更好地理解本发明的技术方案， 下面结合附图 和具体实施例对本发明作进一步的详细说明。 应当指出， 本部分中对具体 结构的描述及描述顺序仅是对具体实施例的说明， 不应视为对本发明的保 护范围有任何限制作用。 The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description and description of specific structures in this section are merely illustrative of specific embodiments and should not be construed as limiting the scope of the invention.
请参考图 1 , 图 1为本发明实施例所提供的一种用于双钢轮压路机的 变频振动控制装置的部分结构示意图。 Please refer to FIG. 1. FIG. 1 is a partial structural schematic view of a variable frequency vibration control device for a double drum compactor according to an embodiment of the present invention.
如图所示， 该实施例的变频振动控制装置包括测压接头 1、 溢流阀 2、 前振动马达 3、 后振动马达 4、 后控制比例阀 5、 前控制比例阀 6、 后控制 电磁阀 7、 前控制电磁阀 8、 沖洗阀 9和节流孔 10, 其中： As shown in the figure, the variable frequency vibration control device of this embodiment includes a pressure measuring joint 1, a relief valve 2, a front vibration motor 3, a rear vibration motor 4, a rear control proportional valve 5, a front control proportional valve 6, and a rear control solenoid valve. 7. The front control solenoid valve 8, the flush valve 9 and the orifice 10, wherein:
前振动马达 3和后振动马达 4均为双向定量马达， 前振动马达 3的输 出轴可带动压路机前轮振动轴上的偏心块高速旋转， 使压路机前轮按照频 速旋转， 使压路机后轮按照频率 f2振动， 根据液压基础知识， 定量马达的 排量不变， 其输出轴的转速等于流经马达的流量除以排量， 因此前轮振动 频率 fl由流经前振动马达 3的流量决定， 后轮振动频率 f2由流经后振动 马达 4的流量决定； The front vibration motor 3 and the rear vibration motor 4 are both bidirectional quantitative motors. The output shaft of the front vibration motor 3 can drive the eccentric block on the vibration shaft of the front wheel of the roller to rotate at a high speed, so that the front wheel of the roller rotates according to the frequency, so that the rear wheel of the roller is followed. The frequency f2 is vibrated. According to the basic knowledge of the hydraulic fluid, the displacement of the quantitative motor is constant, and the rotational speed of the output shaft is equal to the flow rate flowing through the motor divided by the displacement, so the front wheel vibration frequency fl is determined by the flow rate of the vibrating motor 3 before flowing. The rear wheel vibration frequency f2 is determined by the flow rate of the vibration motor 4 after flowing through;
如图所示， 前振动马达 3和后振动马达 4相互串联， 前振动马达 3并 联有第一分流支路， 该第一分流支路由前控制比例阀 6和前控制电磁阀 8 串联组成， 该第一分流支路用于对流经前振动马达 3的流量进行分流， 从 而改变前振动马达 3的转速， 进而改变压路机前轮的振动频率， 后振动马 达 4并联有第二分流支路， 该第二分流支路由后控制比例阀 5和后控制电 磁阀 7串联组成， 该第二分流支路用于对流经后振动马达 4的流量进行分
流， 从而改变后振动马达 4的转速， 进而改变压路机后轮的振动频率， 前 振动马达 3和后振动马达 4之间的管路上还连接有起安全作用的溢流阀 2; 如图所示， 前振动马达 3和后振动马达 4的输油管路还分别与沖洗回 路连接， 该沖洗回路包括沖洗阀 9和节流孔 10, 沖洗回路可以使闭式回路 中的油液部分流出 （其流量受到节流孔 10的限制）， 参与外部循环， 从而 带走一部分热量， 减少发热， 降低热平衡温度， 提高冷却效果； 需要说明 的是， 在振动回路中， 还设有补油系统（图未示出）， 由于沖洗回路带走部 分油液， 且闭式回路中不可避免存在泄漏， 因此需要设置相应的补油系统 为闭式系统补充油液， 使闭式回路中总有部分油液流出， 另一部分新油液 流进； As shown in the figure, the front vibration motor 3 and the rear vibration motor 4 are connected in series with each other, and the front vibration motor 3 is connected in parallel with a first branching branch, and the first branching branch pre-control proportional valve 6 and the front control solenoid valve 8 are connected in series, The first branching branch is used for diverting the flow rate of the front vibrating motor 3, thereby changing the rotational speed of the front vibrating motor 3, thereby changing the vibration frequency of the front wheel of the roller, and the rear vibrating motor 4 is connected with the second diverting branch in parallel. The two-way branch routing control proportional valve 5 and the rear control solenoid valve 7 are formed in series, and the second branching branch is used to divide the flow rate of the rear vibration motor 4 Flow, thereby changing the rotational speed of the rear vibrating motor 4, thereby changing the vibration frequency of the rear wheel of the roller, and a safety relief valve 2 is connected to the pipeline between the front vibrating motor 3 and the rear vibrating motor 4; The oil supply lines of the front vibration motor 3 and the rear vibration motor 4 are also respectively connected to a flushing circuit, which includes a flushing valve 9 and an orifice 10, and the flushing circuit can make the oil portion of the closed circuit flow out (the flow rate is affected by The restriction of the orifice 10) participates in the external circulation, thereby taking away a part of the heat, reducing the heat generation, lowering the heat balance temperature, and improving the cooling effect; it should be noted that in the vibration circuit, an oil replenishing system is also provided (not shown) ), because the flushing circuit takes away part of the oil, and there is inevitably a leak in the closed circuit, it is necessary to set up a corresponding oil replenishing system to replenish the closed system, so that some oil flows out of the closed circuit. a part of the new oil flows in;
如图所示， 前控制比例阀 6和后控制比例阀 5均为可调式二位二通常 开型电磁阀， 前控制电磁阀 8和后控制电磁阀 7均为二位二通常闭型电磁 阀， 沖洗阀 9为先导式三位三通换向阀。 As shown in the figure, the front control proportional valve 6 and the rear control proportional valve 5 are both adjustable two-position two normally open type solenoid valves, and the front control solenoid valve 8 and the rear control solenoid valve 7 are both two-position two normally closed solenoid valves. The flushing valve 9 is a pilot three-position three-way reversing valve.
在工作过程中， 上述的变频振动控制装置具有四种工作模式， 四种工 作模式的动作原理如下： In the working process, the above-mentioned variable frequency vibration control device has four working modes, and the operating principles of the four working modes are as follows:
一、 全轮固定频率振动模式： 后控制比例阀 5、 前控制比例阀 6、 后控 制电磁阀 7和前控制电磁阀 8均不得电， 流经前振动马达 3的流量和流经 后振动马达 4的流量相等， 压路机前后轮的振动频率为固定值， 溢流阀 2 起安全的作用， 保护马达过载或卡死。 1. All-wheel fixed-frequency vibration mode: The rear control proportional valve 5, the front control proportional valve 6, the rear control solenoid valve 7 and the front control solenoid valve 8 are all unpowered, flow through the front vibration motor 3 and flow through the vibration motor The flow rate of 4 is equal, the vibration frequency of the front and rear wheels of the roller is a fixed value, and the relief valve 2 plays a safe role to protect the motor from overload or jam.
二、 前轮变频率振动： 前控制比例阀 6、 后控制电磁阀 7和前控制电 磁阀 8均得电， 后控制比例阀 5不得电， 可通过调整前控制比例阀 6的电 流大小来改变流经前振动马达 3的流量， 从而使压路机前轮的振动频率随 之改变， 电流越小， 前控制比例阀 6阀门的开口越大， 流经前振动马达 3 的流量越小， 压路机前轮的振动频率越小， 反之同理； Second, the front wheel variable frequency vibration: The front control proportional valve 6, the rear control solenoid valve 7 and the front control solenoid valve 8 are all energized, and the rear control proportional valve 5 is not energized, and can be changed by controlling the current of the proportional valve 6 before adjusting. The flow rate of the front vibrating motor 3 flows, so that the vibration frequency of the front wheel of the roller changes accordingly. The smaller the current, the larger the opening of the valve of the front control proportional valve 6, and the smaller the flow rate of the front vibrating motor 3, the front wheel of the roller The smaller the vibration frequency, the opposite is true;
三、 后轮变频率振动： 后控制比例阀 5、 后控制电磁阀 7和前控制电 磁阀 8均得电， 前控制比例阀 6不得电， 可通过调整后控制比例阀 5的电 流大小来改变流经后振动马达 4的流量， 从而使压路机后轮的振动频率随 之改变， 电流越小， 后控制比例阀 5阀门的开口越大， 流经后振动马达 4 的流量越小， 压路机后轮的振动频率越小， 反之同理；
四、 全轮变频率振动： 后控制比例阀 5、 前控制比例阀 6、 后控制电磁 阀 7和前控制电磁阀 8都得电， 可通过改变后控制比例阀 5和前控制比例 阀 6的电流大小来改变流经前振动马达 3的流量和流经后振动马达 4的流 量， 使压路机前后轮的振动频率随之改变， 可以根据环境需要使前后轮具 有不同的振动频率， 以获得最佳的压实效果。 Third, the rear wheel variable frequency vibration: the rear control proportional valve 5, the rear control solenoid valve 7 and the front control solenoid valve 8 are both energized, the front control proportional valve 6 is not electric, can be changed by adjusting the current of the proportional valve 5 after adjustment After flowing through the flow of the vibration motor 4, the vibration frequency of the rear wheel of the roller is changed accordingly. The smaller the current, the larger the opening of the valve of the proportional control valve 5, and the smaller the flow rate of the vibration motor 4 after flowing, the rear wheel of the roller The smaller the vibration frequency, the opposite is true; 4. All-wheel variable frequency vibration: The rear control proportional valve 5, the front control proportional valve 6, the rear control solenoid valve 7 and the front control solenoid valve 8 are all energized, and the proportional proportional valve 5 and the front control proportional valve 6 can be controlled by changing. The current is used to change the flow rate of the vibrating motor 3 before flowing through and the flow rate of the vibrating motor 4 after flowing through, so that the vibration frequency of the front and rear wheels of the roller changes accordingly, and the front and rear wheels can have different vibration frequencies according to environmental requirements to obtain the best. The compaction effect.
需要说明的是， 上述实施例中， 可以采用振动单泵（图未示出）连接 前振动马达 3和后振动马达 4组成闭式回路， 也可以采用双泵分别连接前 振动马达 3和后振动马达 4组成闭式回路， 但为了降低成本， 且占用较小 空间以方便布置， 可以优先选择振动单泵（例如两点变量单泵）和双马达 这个方案。 It should be noted that, in the above embodiment, a vibration single pump (not shown) may be used to connect the front vibration motor 3 and the rear vibration motor 4 to form a closed circuit, or a double pump may be used to respectively connect the front vibration motor 3 and the rear vibration. The motor 4 constitutes a closed circuit, but in order to reduce the cost and occupy a small space for convenient arrangement, a vibration single pump (for example, a two-point variable single pump) and a dual motor can be preferred.
需要说明的是， 上述实施例中， 包括溢流阀 2、 前控制比例阀 6、 前控 制电磁阀 8、 后控制比例阀 5、 后控制电磁阀 7、 沖洗阀 9和节流孔 10均 可以用可实现相应功能的其他阀门代替， 其具体形式并不局限于图中所示 的结构。 It should be noted that, in the above embodiment, the relief valve 2, the front control proportional valve 6, the front control solenoid valve 8, the rear control proportional valve 5, the rear control solenoid valve 7, the flush valve 9 and the orifice 10 may be It is replaced by other valves that can achieve the corresponding functions, and the specific form is not limited to the structure shown in the drawings.
需要说明的是， 前振动马达 3和后振动马达均为双向定量马达， 即进 出油口 A和 B可以互换， 以改变输出轴的转向， 从而实现前后轮同一转向 和不同转向的频率改变。 It should be noted that both the front vibration motor 3 and the rear vibration motor are two-way quantitative motors, that is, the inlet and outlet ports A and B can be interchanged to change the steering of the output shaft, thereby realizing the frequency change of the same steering and different steering of the front and rear wheels.
需要说明的是， 上述实施例的变频振动控制装置还可以包括测压接头 1 (见图中测压点 M ), 用于测量 Al、 A2、 Bl、 B2、 Pl、 P2、 L和 R处的 压强， 并可通过仪表将其显示。 It should be noted that the variable frequency vibration control device of the above embodiment may further include a pressure measuring joint 1 (see the pressure measuring point M in the figure) for measuring Al, A2, Bl, B2, P1, P2, L and R. Pressure and display it through the meter.
本发明实施例提供的一种用于双钢轮压路机的变频振动控制装置， 通 过为相互串联的前振动马达和后振动马达各并联一个分流支路， 以控制流 经前振动马达 /后振动马达的流量，进而控制压路机前 /后轮的振动频率， 实 现前后轮振动频率的无级调节， 不仅可消除 "拍振" 现象， 有助于提高驾 驶员的操作舒适性和压路机的可靠性以及压实效果， 此外， 还可根据工作 环境的需要使振动回路随时调整前后轮的频率， 实现多种工作状态 （多频 双幅），拓展了压路机使用范围； 由于可根据不同工作环境采用不同振动频 率， 提高了压路功效， 减小了能耗， 且有助于降低热平衡温度， 提高了液 压系统的可靠性。
本发明实施例还提供了一种双钢轮压路机， 该双钢轮压路机具有上述 的变频振动控制装置， 由于上述的变频振动控制装置具有上述技术效果， 因此，具有该变频振动控制装置的双钢轮压路机也应具备相应的技术效果， 其具体实施过程与上述实施例类似， 兹不赘述。 A variable frequency vibration control device for a double drum compactor provided by an embodiment of the present invention controls a pre-vibration motor/post-vibration motor by paralleling a shunt branch for each of a front vibration motor and a rear vibration motor connected in series The flow rate, in turn, controls the vibration frequency of the front/rear wheels of the roller, and realizes the stepless adjustment of the vibration frequency of the front and rear wheels, which not only eliminates the phenomenon of "beating vibration", but also helps to improve the driver's operational comfort and the reliability and pressure of the roller. The actual effect, in addition, according to the needs of the working environment, the vibration circuit can adjust the frequency of the front and rear wheels at any time, realize a variety of working states (multi-frequency double-amplitude), and expand the use range of the roller; since different vibration frequencies can be adopted according to different working environments, Improves the efficiency of the pressure circuit, reduces energy consumption, and helps to lower the heat balance temperature and improve the reliability of the hydraulic system. The embodiment of the present invention further provides a double drum compactor, which has the above-mentioned variable frequency vibration control device. Since the above-mentioned variable frequency vibration control device has the above technical effects, the double steel having the variable frequency vibration control device The roller compactor should also have corresponding technical effects, and the specific implementation process is similar to the above embodiment, and will not be described again.
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在 本发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包 含在本发明的保护范围之内。
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.
Claims
1、一种用于双钢轮压路机的变频振动控制装置， 包括相互串联的第一 振动马达和第二振动马达， 其特征在于， 所述第一振动马达并联有第一分 流支路， 所述第一分流支路可改变流经第一振动马达的流量， 所述第二振 动马达并联有第二分流支路， 所述第二分流支路可改变流经第二振动马达 的流量。 A variable frequency vibration control device for a double drum compactor, comprising a first vibration motor and a second vibration motor connected in series, wherein the first vibration motor has a first branching branch in parallel, The first diverting branch may vary the flow through the first vibrating motor, and the second vibrating motor has a second diverting branch in parallel, the second diverting branch changing the flow through the second vibrating motor.
2、 如权利要求 1所述的变频振动控制装置， 其特征在于， 所述第一分 流支路包括相互串联的第一控制比例阀和第一控制电磁阀。 The variable frequency vibration control apparatus according to claim 1, wherein said first branching branch includes a first control proportional valve and a first control solenoid valve connected in series with each other.
3、 如权利要求 2所述的变频振动控制装置， 其特征在于， 所述第二分 流支路包括相互串联的第二控制比例阀和第二控制电磁阀。 The variable frequency vibration control apparatus according to claim 2, wherein the second branching branch includes a second control proportional valve and a second control solenoid valve connected in series with each other.
4、 如权利要求 1至 3任一项所述的变频振动控制装置， 其特征在于， 所述第一振动马达和所述第二振动马达均为定量马达。 The variable frequency vibration control device according to any one of claims 1 to 3, wherein the first vibration motor and the second vibration motor are both quantitative motors.
5、 如权利要求 4所述的变频振动控制装置， 其特征在于， 所述第一控 制比例阀和所述第二控制比例阀均为可调式二位二通常开型电磁阀， 所述 第一控制电磁阀和所述第二控制电磁阀均为二位二通常闭型电磁阀。 The variable frequency vibration control device according to claim 4, wherein the first control proportional valve and the second control proportional valve are both adjustable two-position two normally open type solenoid valves, the first The control solenoid valve and the second control solenoid valve are both two-position normally closed solenoid valves.
6、 如权利要求 4所述的变频振动控制装置， 其特征在于， 所述变频振 动控制装置还包括与所述第一振动马达及所述第二振动马达的输油管路相 连的沖洗回路， 所述沖洗回路包括相连的沖洗阀和节流孔。 The variable frequency vibration control device according to claim 4, wherein the variable frequency vibration control device further includes a flushing circuit connected to the oil supply lines of the first vibration motor and the second vibration motor, The flush circuit includes an associated flush valve and orifice.
7、 如权利要求 6所述的变频振动控制装置， 其特征在于， 所述沖洗阀 为先导式三位三通换向阀。 The variable frequency vibration control device according to claim 6, wherein the flush valve is a pilot three-position three-way selector valve.
8、如权利要求 4所述的变频振动控制装置， 其特征在于， 所述变频振 动控制装置还包括用于测量各元件进出油口压强的测压接头。 The variable frequency vibration control apparatus according to claim 4, wherein said variable frequency vibration control means further comprises a pressure tapping joint for measuring the pressure of the inlet and outlet ports of the respective components.
9、 一种双钢轮压路机， 其特征在于， 所述双钢轮压路机具有权利要求 1至 8任一项所述的变频振动控制装置。 A double drum compactor, characterized in that the double drum roller has the variable frequency vibration control device according to any one of claims 1 to 8.
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| CN201080591Y (en) * | 2007-08-10 | 2008-07-02 | 青岛科泰重工机械有限公司 | Frequency adjustable road roller open type loop hydraulic vibration system |
| EP2148006A1 (en) * | 2008-07-24 | 2010-01-27 | Ammann Czech Republic, a.s. | Device for speed synchronisation of two vibrators |
| CN102383360A (en) * | 2011-08-16 | 2012-03-21 | 三一重工股份有限公司 | Double steel wheel road roller and frequency-converting vibration control device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048971A (en) * | 2020-08-25 | 2020-12-08 | 三一汽车制造有限公司 | Energy-saving control method and device for road roller and road roller |
| CN112048971B (en) * | 2020-08-25 | 2022-04-15 | 三一汽车制造有限公司 | Energy-saving control method and device for road roller and road roller |
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| CN102383360A (en) | 2012-03-21 |
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