阅读说明：本技术 一种液压马达 (Hydraulic Motor ) 是由 朱昌吉 张豪 刘宇 高腾麟 李亚军 于 2019-12-03 设计创作，主要内容包括：本发明适用于马达技术领域,提供了一种液压马达,包括：伸缩叶片机构,用于在待启动状态下通过结构收缩减少机械损失；主体机构,用于安装伸缩叶片机构；驱动机构,连接设置在主体机构上,且和伸缩叶片机构相对,用于控制伸缩叶片机构运行形成伸出或缩回的状态。本发明中,驱动机构控制伸缩叶片机构运行形成伸出或缩回的状态,在正常运行过程中,伸缩叶片机构和主体机构中的部分活动相抵,而当收缩状态下,伸缩叶片机构和主体结构不再抵合接触,从而减少马达本身的输出消耗,也能够减少机械损耗,提高马达寿命。(The invention is applicable to the technical field of motors, and provides an hydraulic motor which comprises a telescopic blade mechanism, a main body mechanism and a driving mechanism, wherein the telescopic blade mechanism is used for reducing mechanical loss through structural contraction in a state to be started, the main body mechanism is used for installing the telescopic blade mechanism, the driving mechanism is connected and arranged on the main body mechanism and is opposite to the telescopic blade mechanism and used for controlling the telescopic blade mechanism to operate to form an extending or retracting state.)

1, hydraulic motor, characterized by comprising:

the telescopic blade mechanism is used for reducing mechanical loss through structural contraction in a state of waiting to be started;

the main body mechanism is used for installing the telescopic blade mechanism;

and the driving mechanism is connected with the main body mechanism, is opposite to the telescopic blade mechanism and is used for controlling the telescopic blade mechanism to operate to form an extending or retracting state.

2. The hydraulic motor of claim 1, wherein the body mechanism comprises:

the rotating structure is used for arranging and matching the telescopic blade mechanism to operate;

the cavity structure is arranged corresponding to the telescopic blade mechanism and used for containing engine oil.

3. The hydraulic motor of claim 2, wherein the rotating structure comprises a stator assembly and a rotor assembly coaxially arranged, and a cavity with a semi-minor axis dimension larger than the radius of the rotor assembly is arranged in the stator assembly.

4. A hydraulic motor according to claim 3, wherein the channel structures are embedded in the rotor assembly and are arranged in groups in an equiangular distribution.

5. The hydraulic motor as claimed in claim 4, wherein the end of the retractable vane mechanism is movably engaged with the channel structure, and the end far from the channel structure is movably abutted against the side wall of the inner cavity of the stator assembly.

6. The hydraulic motor of claim 5, wherein the telescoping vane mechanism engages ends disposed in the channel structure to separate the channel structure into two parts sealed from each other, the space between the two parts sealed from each other varying with the movement of the telescoping vane mechanism.

7. The hydraulic motor of claim 6, wherein the channel structure is in communication with the drive mechanism through two portions of the telescoping vane mechanism, and wherein the telescoping vane mechanism is moved relative to the channel structure by a pressure differential created by the oil charge and discharge during operation of the drive mechanism.

8. The hydraulic motor of claim 7, wherein the drive mechanism includes an oil ejection structure and an oil return structure, each communicating with two ends of the channel structure.

9. The hydraulic motor of claim 8, wherein the oil-ejecting structure and the oil-returning structure are respectively communicated with the oil-injecting structure and the oil-recovering structure through a control structure of the valve to form independent circulation, and the opening and closing states of the control structures of the valve corresponding to the oil-ejecting structure and the oil-returning structure are opposite.

Technical Field

The invention belongs to the technical field of motors, and particularly relates to an hydraulic motor.

Background

With the gradual depletion of resources such as petroleum and the gradual deterioration of climate environment, the concern of all countries in the world on the environment is gradually increased, the technical problem of automobile energy conservation becomes a global technical problem to be solved urgently, the hydraulic hybrid energy-saving technology is used as important branches of the automobile energy-saving technology, and has attracted the attention of the government departments of all countries, automobile manufacturers and scientific research institutions.

When the vane type hydraulic motor works, the vane type hydraulic motor is driven by hydraulic torque generated when the two sides of the vane bear the oil inlet pressure and the oil return pressure respectively, and can perform two rotation states of positive rotation and negative rotation. In order to ensure that the vanes can be tightly attached to the inner surface of the stator before starting, a vane pressing mechanism is arranged, for example, a swallow spring is adopted or high-pressure oil is introduced to the bottoms of the vanes. However, in order to increase the working pressure and the rotating speed of the vane motor, the pressing force between the vane and the stator should be reduced to reduce the mechanical wear therebetween, and at present, the contact stress between the vane and the stator is usually reduced by reducing the thickness of the vane and changing the structure of the vane to reduce the wear, and improve the starting efficiency, the mechanical efficiency and the service life of the hydraulic motor.

The above-described approach is clearly an improvement over the design of hydraulic motors that are required to operate, but when they do so, they continue to operate in the vehicle's powertrain due to their direct connection to the engine or load, where the mechanical losses caused by the close contact of the vanes with the inner surface of the stator are entirely disadvantageous.

Disclosure of Invention

It is an object of an embodiment of the present invention to provide hydraulic motor, which is intended to solve problem that mechanical loss due to close contact of the vanes with the inner surface of the stator is completely disadvantageous when the hydraulic motor continues to operate after completing its operation.

The embodiment of the invention is realized in such a way that the hydraulic motor comprises:

the telescopic blade mechanism is used for reducing mechanical loss through structural contraction in a state of waiting to be started;

the main body mechanism is used for installing the telescopic blade mechanism;

and the driving mechanism is connected with the main body mechanism, is opposite to the telescopic blade mechanism and is used for controlling the telescopic blade mechanism to operate to form an extending or retracting state.

Another object of the present invention is to provide the main body mechanism, including:

the rotating structure is used for arranging and matching the telescopic blade mechanism to operate;

the cavity structure is arranged corresponding to the telescopic blade mechanism and used for containing engine oil.

It is a further object of an embodiment of the present invention that the rotational structure includes a stator assembly and a rotor assembly coaxially disposed, the stator assembly having a cavity therein with a minor axis dimension greater than a radius of the rotor assembly.

Another objective of the present invention is that the channel structures are embedded in the rotor assembly and are distributed at equal angles.

Another object of the embodiment of the present invention is that the end of the retractable vane mechanism is movably disposed in the channel structure, and the end far away from the channel structure is movably abutted against the side wall of the inner cavity of the stator assembly.

Another object of the embodiments of the present invention is that the retractable blade mechanism is engaged with end of the channel structure to separate the channel structure into two parts which are sealed and isolated from each other, and the space of the two parts which are sealed and isolated changes with the movement of the retractable blade mechanism.

Another objective of the present invention is that the cavity structure is separated by a retractable vane mechanism to form two parts which are communicated with the driving mechanism, and the retractable vane mechanism is driven to move relative to the cavity structure by the pressure difference formed by the oil injection and the oil discharge during the operation of the driving mechanism.

Another objective of the present invention is that the driving mechanism includes an oil ejection structure and an oil return structure, which are respectively connected to two ends of the cavity structure.

Another objective of the embodiment of the present invention is that the oil ejecting structure and the oil returning structure are respectively communicated with the engine oil injecting structure and the engine oil recovering structure through the valve control structure to form independent circulation, and the opening and closing states of the valve control structures corresponding to the oil ejecting structure and the oil returning structure are opposite.

According to the hydraulic motor provided by the embodiment of the invention, the driving mechanism controls the telescopic blade mechanism to operate to form an extending or retracting state, in the normal operation process, the telescopic blade mechanism and the main body mechanism are in movable contact with each other, and in the retracting state, the telescopic blade mechanism and the main body mechanism are not in contact with each other any more, so that the output consumption of the motor is reduced, the mechanical loss can be reduced, and the service life of the motor is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of an hydraulic motor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a control schematic diagram of an oil jacking structure in hydraulic motor according to an embodiment of the present invention;

fig. 4 is a schematic control diagram of an oil return structure in an hydraulic motor according to an embodiment of the present invention.

In the drawing, the oil pan comprises a stator 1, a stator 2, blades 3, a rotor 4, a recovered oil cavity 5, a top oil cavity 6, an end cover 7, a recovered oil way 8, a top oil way 9, an -th electromagnetic valve 10, a second electromagnetic valve 11, an ECU 12, a main oil way 13 and an oil pan.

Detailed Description

For purposes of making the objects, aspects and advantages of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and examples.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1, hydraulic motor provided for embodiments of the present invention includes:

the telescopic blade mechanism is used for reducing mechanical loss through structural contraction in a state of waiting to be started;

the main body mechanism is used for installing the telescopic blade mechanism;

and the driving mechanism is connected with the main body mechanism, is opposite to the telescopic blade mechanism and is used for controlling the telescopic blade mechanism to operate to form an extending or retracting state.

In the embodiment of the present invention, preferably, the retractable vane mechanism may adopt a vane 2, the end of the vane 2 is in the shape of a conventional motor vane in the prior art, the other end is in the shape of a piston, and the vane 2 is installed in the main body mechanism by welding or integration molding.

In the embodiment of the invention, the driving mechanism controls the telescopic blade mechanism to operate to form an extending or retracting state, in the normal operation process, the telescopic blade mechanism and the main body mechanism are movably abutted, and in the contracting state, the telescopic blade mechanism and the main body mechanism are not abutted and contacted any more, so that the output consumption of the motor is reduced, the mechanical loss can be reduced, and the service life of the motor is prolonged.

As shown in fig. 1, as preferred embodiments of the present invention, the main body mechanism includes:

the rotating structure is used for arranging and matching the telescopic blade mechanism to operate;

the cavity structure is arranged corresponding to the telescopic blade mechanism and used for containing engine oil.

The rotating structure comprises a stator assembly and a rotor assembly which are coaxially arranged, and a cavity with a short semi-axis of which the size is larger than that of the rotor assembly is arranged in the stator assembly.

The cavity structure is embedded in the rotor component and is provided with a plurality of groups in equal-angle distribution.

In the embodiment of the invention, preferably, the stator assembly adopts a stator 1, the rotor assembly adopts a rotor 3, the inner wall of the stator 1 is in an elliptical structure, the rotor 3 is concentrically arranged in the stator 1, two sides of the rotor 3 and the stator 1 are fixedly installed through an end cover 6, the rotor 3 and the stator 1 are relatively rotatably connected, the channel structures are arranged in the rotor 3 in groups at equal angles and are distributed in an annular array, the channel structures comprise a recovered oil cavity 4 and a top oil cavity 5 which are communicated, the recovered oil cavity 4 and the top oil cavity 5 are formed by separating the tail ends of blades 2 extending into the channel structures, the recovered oil cavity 4 is close to the edge of the rotor 3, and the top oil cavity 5 is relatively oriented to the center of the rotor 3.

As shown in fig. 1, as preferred embodiments of the present invention, the end of the retractable vane mechanism is movably fitted in the channel structure, and the end far away from the channel structure is movably abutted against the side wall of the inner cavity of the stator assembly.

The telescopic blade mechanism is arranged at the end in the cavity structure in a matching way to separate the cavity structure into two parts which are relatively sealed and isolated, and the space of the two parts which are sealed and isolated is changed along with the movement of the telescopic blade mechanism.

The cavity structure is communicated with the driving mechanism through two parts formed by the telescopic blade mechanism in a separated mode, and the telescopic blade mechanism is driven to move relative to the cavity structure through pressure difference formed by engine oil injection and discharge in the operation process of the driving mechanism.

In the embodiment of the invention, preferably, the end of the vane 2 far away from the channel structure penetrates through the edge of the rotor 3 and then movably offsets with the inner wall of the stator 1, when the amount of the engine oil in the recovered oil cavity 4 and the top oil cavity 5 is increased or decreased, the vane 2 can be controlled to move in the channel structure formed by the recovered oil cavity 4 and the top oil cavity 5 through the hydraulic pressure difference, and after the rotor 3 slides deep into the channel structure formed by the recovered oil cavity 4 and the top oil cavity 5, the edge of the vane 2 is separated and movably offsets with the inner wall of the stator 1.

In the embodiment of the present invention, it is preferable that the recovered oil chamber 4 and the top oil chamber 5 are respectively communicated with a driving mechanism, the driving mechanism drives the oil to be injected from the top oil chamber 5, when the oil flows out from the recovered oil chamber 4, the top oil chamber 5 increases the oil pressure to push the vane 2 to move toward the recovered oil chamber 4 side in the channel structure, and when the driving mechanism drives the oil to be injected from the recovered oil chamber 4 and the oil flows out from the top oil chamber 5, the top oil chamber 5 increases the oil pressure to push the vane 2 to move toward the top oil chamber 5 side in the channel structure.

As shown in fig. 2-4, as preferred embodiments of the present invention, the driving mechanism includes an oil ejecting structure and an oil returning structure, which are respectively connected to two ends of the cavity structure.

The oil ejection structure and the oil return structure are communicated with the engine oil injection structure and the engine oil recovery structure through the valve control structure respectively to form independent circulation, and the opening and closing states of the valve control structures corresponding to the oil ejection structure and the oil return structure are opposite.

In the embodiment of the invention, preferably, the oil jacking structure comprises an oil jacking path 8 and a main oil gallery 12 and an oil sump 13 communicated with the oil jacking path 8, a valve control structure is arranged in the oil jacking path 8, a valve control structure in the oil jacking path 8 is preferably a second electromagnetic valve 10, and the oil jacking path 8 is limited to be communicated with the main oil gallery 12 or the oil sump 13 after passing through the second electromagnetic valve 10.

In the embodiment of the present invention, preferably, the oil return structure includes a recovery oil path 7, the recovery oil path 7 is also communicated with the main oil path 12 and the oil pan 13, a valve Control structure is provided in the recovery oil path 7, a valve Control structure in the recovery oil path 7 is preferably -th electromagnetic valve 9, the recovery oil path 7 is limited to be communicated with the main oil path 12 or the oil pan 13 after passing through the -th electromagnetic valve 9, the -th electromagnetic valve 9 and the second electromagnetic valve 10 are opposite in opening state, and the -th electromagnetic valve 9 and the second electromagnetic valve 10 are both opened based on the condition of the induction motor of an ECU (Electronic Control Unit) 11, that is, when the motor is used as a load, the ECU11 controls the on-off of the -th electromagnetic valve 9 and the second electromagnetic valve 10.

In the embodiment of the invention, preferably, the th electromagnetic valve 9 and the 4610 th electromagnetic valve are two-position three-way electromagnetic valves, when the electromagnetic valves are powered on, the port P is communicated with the port K, the port R is disconnected with the port K, when the electromagnetic valves are powered off, the port P is disconnected with the port K, the port R is communicated with the port K, the port K1 of the th electromagnetic valve 9 is connected with the recovery oil way 7, the port P1 is connected with the main oil gallery 12, the port R1 is connected with the oil pan 13, the port K2 of the second electromagnetic valve 10 is connected with the top oil way 8, the port P2 is connected with the main oil gallery 12, the port R2 is connected with the oil pan 13, when the ECU 7 determines that the hydraulic motor does not need to work (namely the engine is started or the hydraulic motor does work on a load), an electric signal is output to control the second electromagnetic valve and the second electromagnetic valve 10, so that the second electromagnetic valve 10 is in a power-off state, the electromagnetic valve 9 is in an energized state, the main oil gallery 12 enters the recovery oil cavity 4 through the pressure 739 and the pressure in the recovery oil cavity 4, when the electromagnetic valve 5399 and the vane 7372 of the electromagnetic valve 9 and the hydraulic motor is in the top oil cavity, the stator 7372, the stator 7375, and the vane in the stator is determined that the hydraulic motor is in the top oil recovery oil cavity 3, when the hydraulic motor is in the top oil recovery oil cavity.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.