CN210564885U

CN210564885U - Electric control hydraulic motor

Info

Publication number: CN210564885U
Application number: CN201921663821.8U
Authority: CN
Inventors: 何阳民
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-19
Anticipated expiration: 2029-09-30

Abstract

The application provides an automatically controlled hydraulic motor relates to hydraulic motor technical field. The hydraulic control system comprises an oil cylinder body, a rotation output assembly, a plunger assembly, a cartridge valve, an angle sensor and a controller. The plunger assembly is arranged on the oil cylinder body, the cartridge valve is arranged on the oil cylinder body and is communicated with a hydraulic system, the angle sensor is arranged on the rotation output assembly and is used for detecting the rotation angle of the rotation output assembly relative to the oil cylinder body, and the cartridge valve and the angle sensor are respectively electrically connected with the controller. The controller is used for controlling the cartridge valve to act according to the detection result of the angle sensor so as to enable the plunger assembly to drive the rotation output assembly to rotate along the preset state. The operation of the cartridge valve is controlled by setting a program or logical operation of a controller, so that high-pressure oil is guided into a working cavity of a working oil cylinder plunger at a working section according to a working sequence, and a plunger assembly interacts with a rotation output assembly to drive an electric control hydraulic motor to rotate under load. The problems of complex structure, high dimensional requirement precision and difficult machining of the oil cylinder are solved.

Description

Electric control hydraulic motor

Technical Field

The application relates to the technical field of hydraulic motors, in particular to an electronic control hydraulic motor.

Background

In recent years, as hydraulic technology is continuously developed towards high pressure and high power, people have higher and higher requirements on hydraulic motors.

The existing inner curve type low-speed large-torque hydraulic motor has higher requirement on the whole machining precision, so that the machining and manufacturing difficulty is higher.

SUMMERY OF THE UTILITY MODEL

The purpose of this application includes, for example, provides an automatically controlled hydraulic motor, and it can improve current hydraulic motor machining precision and require highly, the big problem of the processing degree of difficulty.

The embodiment of the application can be realized as follows:

in a first aspect, an embodiment of the present application provides an electrically controlled hydraulic motor, which includes an oil cylinder body, a rotation output assembly, a plunger assembly, a cartridge valve, an angle sensor, and a controller;

the plunger assembly is arranged on the oil cylinder body, the cartridge valve is arranged on the oil cylinder body and used for being communicated with a hydraulic system, the angle sensor is arranged on the rotation output assembly and used for detecting the rotation angle of the rotation output assembly relative to the oil cylinder body, and the cartridge valve and the angle sensor are respectively and electrically connected with the controller;

the controller is used for controlling the cartridge valve to act according to the detection result of the angle sensor, so that the plunger assembly drives the rotation output assembly to rotate along a preset state.

In an optional embodiment, the oil cylinder body comprises an action surface, and plunger cylinders are uniformly arranged on the oil cylinder body and are vertical to the action surface;

the rotation output assembly comprises a turntable, the turntable comprises a guide rail surface matched with the action surface, and when the plunger assembly moves under the action of the hydraulic system, the plunger assembly can act on the guide rail surface.

In an alternative embodiment, the number of the plunger assemblies is 2N, and two plunger assemblies with central axes on the same straight line form a group;

the quantity of the cartridge valves is N, and one cartridge valve is simultaneously communicated with the plunger cylinder where a group of plunger assemblies are located and used for controlling the movement of the plunger assemblies located in the plunger cylinder.

In an alternative embodiment, the number of the cartridge valves is the same as that of the plunger assemblies, and the cartridge valves correspond to the plunger assemblies one by one, and one cartridge valve is communicated with the plunger cylinder where one plunger assembly is located and used for controlling the movement of the plunger assemblies located in the plunger cylinder.

In an optional implementation manner, the oil cylinder body is provided with a rotating shaft hole along the axial direction, the rotation output assembly further comprises a power output shaft, the rotating disc is fixedly connected with the power output shaft, the rotating disc is sleeved on the acting surface of the oil cylinder body, the power output shaft is rotatably arranged in the rotating shaft hole in a penetrating manner, and the angle sensor is fixed on the power output shaft.

In an optional embodiment, the oil cylinder body is sleeved on the turntable, and the guide rail surface is an outer circumferential surface of the turntable.

In an optional embodiment, the rotation output assembly further includes a power output shaft, the power output shaft is fixedly connected with or integrally formed with the turntable, and the angle sensor is fixed to the power output shaft.

In an optional embodiment, the power output shaft is a bidirectional output shaft, the rotation output assembly further includes a transmission assembly, and the angle sensor is in transmission connection with the power output shaft through the transmission assembly.

In an optional embodiment, the acting surface is an end surface of the oil cylinder body, the guide surface is an end surface of the rotary table, the rotation output assembly further includes a power output shaft, the power output shaft is fixedly connected with the rotary table, the oil cylinder body is provided with a rotary shaft hole along an axial direction, and the power output shaft is rotatably arranged in the rotary shaft hole in a penetrating manner.

In an optional embodiment, the number of the plunger assemblies is multiple, the oil cylinder body is provided with plunger cylinders corresponding to the plunger assemblies one to one, and the controller controls the cartridge valve to drive the plunger assemblies matched with the cartridge valve to move at a preset time so as to drive the rotation output assembly to rotate along a preset direction.

The beneficial effects of the embodiment of the application include, for example:

the oil distribution technology of the electric control cartridge valve is adopted, and the cartridge valve technology is used for supplying oil to plunger assemblies in hydraulic cylinders in groups or paired oil cylinder bodies in a mode of most direct and shortest connection, so that the existing mechanical oil distribution mode is replaced. The controller sets a program or logic operation, controls the cartridge valve to act according to the rotation angle of the rotation output assembly relative to the oil cylinder body, drives the cartridge valve core to reciprocate by means of the change of electromagnetic attraction for controlling the electrification and the outage of the electromagnet, and realizes the guiding of high-pressure hydraulic oil into a working cavity of a working oil cylinder plunger at a working section according to a working sequence and the timely guiding of low-pressure hydraulic oil into an oil tank for the working cavity of the oil cylinder plunger in a non-working state. Through the reciprocating motion of the plunger assembly, the roller at the end part of the plunger interacts with the turntable in the rotation output assembly, so that the electric control hydraulic motor is driven to carry out load rotation work. The problems of complex structure, high dimensional requirement precision, difficult machining and high assembly difficulty of the oil cylinder caused by the traditional oil distribution mode are well solved, the manufacturing cost of the motor is saved, and the system is simplified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic diagram of a conventional internal curve low speed high torque hydraulic motor;

FIG. 2 is a schematic structural diagram of an electrically controlled hydraulic motor provided herein;

FIG. 3 is a cross-sectional view of an electrically controlled hydraulic motor provided herein;

FIG. 4 is a logic control diagram of a two-way cartridge valve oil distribution system;

FIG. 5 is a schematic diagram of oil inlet and return of each oil cylinder under a low-speed working condition of the electric control hydraulic motor;

FIG. 6 is a schematic diagram of oil inlet and return of each oil cylinder under a high-speed working condition of the electric control hydraulic motor;

FIG. 7 is a schematic view of a first embodiment of an extended electrically controlled hydraulic motor according to the present disclosure;

FIG. 8 is a cross-sectional view of FIG. 7;

FIG. 9 is a cross-sectional view of a second embodiment of an extended electrically controlled hydraulic motor according to the present application;

fig. 10 is a cross-sectional view of a third structure of an electric control hydraulic motor provided by the application.

Icon: 100-an electrically controlled hydraulic motor; 01-a guide rail; 02-cylinder body; 03-oil distributing shaft; 04-flow distribution window hole; 05-a plunger; 06-rollers; 10-oil cylinder body; 101-acting surface; 102-mounting a disc; 105-a mounting plate; 11-a two-way cartridge valve; 12-a turntable; 125-guide surface; 13-a power take-off shaft; 15-angle sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings or that the application product is usually placed in use, the description is merely for convenience and simplicity, and it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present application.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

Examples

The embodiment of the application provides an electric control hydraulic motor 100, in particular to an electric control inner curve type low-speed large-torque hydraulic motor, which adopts an oil distribution mode combining hydraulic valve control and electric control. The requirement of high manufacturing precision of the existing motor is improved, the installation and maintenance processes are simplified, and the production cost is greatly reduced.

Fig. 1 is a schematic view of a conventional inner curve type low-speed large-torque hydraulic motor.

As shown in fig. 1, the cylinder body 02 is sleeved with the guide rail 01, the oil distribution shaft 03 is sleeved with the cylinder body 02, the guide rail 01 is composed of six identical curves, and each curve comprises an oil inlet area and an oil return area which are symmetrical. Eight plunger cylinder holes are uniformly distributed in the cylinder body 02, and the bottom of the cylinder body is communicated with a flow distribution window hole 04 of the oil distribution shaft 03. The oil distribution shaft 03 is provided with twelve flow distribution window holes 04, wherein six window holes are communicated with high-pressure oil and correspond to an oil inlet section of a curve of the guide rail 01, and the other six window holes correspond to an oil return section of the curve and are communicated with an oil return path. When the hydraulic cylinder works, pressure oil acts on the plunger 05, the roller 06 at the end of the plunger 05 presses the guide rail 01, the cylinder body 02 is fixed, the force N is the acting force of the roller 06 on the curved surface of the guide rail 01, the radial component force F is balanced with hydraulic pressure, and the tangential component force F' pushes the guide rail 01 to form torque for driving an external load so as to enable the guide rail 01 to rotate anticlockwise. When the oil inlet and outlet paths of the motor are reversed, the motor rotates reversely.

In the traditional hydraulic motor, in the operation process of the guide rail 01, the plunger 05 passes through the top end arc section, the oil cylinder does not suck and discharge at the moment, the working plunger 05 needs to be maintained unchanged, the manufacturing precision requirement of the arc section is extremely high, and otherwise, the problem of oil trapping cannot be well solved; in addition, the curved surfaces of the guide rails 01 of the oil inlet and return sections are in arc transition, and the process also requires the increase of the processing difficulty of the curved surfaces of the guide rails 01; during installation, the middle point of the arc segment must be strictly aligned with the middle point of the corresponding oil inlet and return window, so that the assembly difficulty is further increased.

The existing low-speed large-torque hydraulic motor mainly adopts two forms of an oil distribution shaft 03 oil distribution mechanism and an end face oil distribution mechanism. The oil distribution shaft 03 has a complex oil distribution mechanism structure, short sealing length and relative movement; the requirement on the sealing clearance is strict, so the requirements on the machining size precision and the assembling process of the valve shaft and the shaft sleeve are high, and the machining difficulty is high. Although the end face oil distribution mechanism overcomes the inherent defects of shaft oil distribution, radial forces borne by rotating parts such as an oil distribution disc and the like are generally not well balanced, friction pulsation and eccentric wear are caused, leakage increase and leakage pulsation are caused, the efficiency and the service life of a motor are reduced, and the low-speed stability and the reliability of the motor are influenced. No matter which oil distribution mode is adopted, the structures of the oil distribution mechanisms are limited, the structures of the oil inlet and outlet passages are complex, and the number of the radial oil cylinders is limited due to the arrangement of the oil cylinders in the oil distribution structure because safe hole distances are needed among the oil passages.

Fig. 2 is a schematic structural diagram of an electrically controlled hydraulic motor 100 provided in the present application.

As shown in fig. 2, the electrically controlled hydraulic motor 100 includes a cylinder block 10, a rotation output assembly, a cartridge valve, an angle sensor 15, a hydraulic system, and a controller.

Specifically, the oil cylinder body 10 is fixed, the cartridge valve is an electric control assembly, the cartridge valve in the application is a two-way cartridge valve 11, the hydraulic system is controlled by hydraulic valve, and the two-way cartridge valve 11 and the hydraulic system are directly connected with the oil cylinder body 10 and do not move relatively. The angle sensor 15 is arranged on the rotation output assembly, so that the rotation angle of the power output of the hydraulic motor is related to the time, and the oil is sequentially distributed for each oil cylinder on the oil cylinder body 10 according to the preset mode of the logic diagram, so that the output of the rotation speed and the torque of the hydraulic motor is ensured.

The oil distribution technology of the electric control two-way cartridge valve 11 is adopted, so that the problems that the arrangement quantity of oil cylinders is limited, the manufacturing requirement is extremely high, and the rotating speed and the load of a motor can only realize two-stage variables due to the traditional oil distribution mode are solved. The defects of complex structure, high dimensional requirement precision, difficult machining and the like of the traditional oil distribution mode can be overcome, the manufacturing cost of the motor is saved, and the system is simplified.

The specific structure and the corresponding relationship between the components of the electric control hydraulic motor 100 provided in this embodiment will be described in detail below, taking a shell-rotating type inner curve hydraulic motor as an example.

Fig. 3 is a cross-sectional view of an electrically controlled hydraulic motor 100 provided herein.

Referring to fig. 2 and 3, the rotation output assembly includes a rotary plate 12 and a power output shaft 13, and the rotary plate 12 and the power output shaft 13 are fixed relatively. The plunger assembly includes a plunger 05 and a roller 06. The oil cylinder body 10 is provided with a plurality of plunger cylinders, and the plunger assemblies are arranged in the plunger cylinders in a one-to-one correspondence manner. The cylinder block 10 is fixed to a base of the corresponding equipment so that the cylinder block 10 is fixed. The two-way cartridge valve 11 and the hydraulic system are fixedly arranged on the oil cylinder body 10, the plunger 05 and the roller 06 are movably arranged along the plunger cylinder of the oil cylinder body 10, the rotary disc 12 is sleeved outside the plunger assembly, the power output shaft 13 penetrates through a rotating shaft hole of the oil cylinder body 10 and is rotatably connected through a bearing, and the angle sensor 15 is arranged on one side of the power output shaft 13, which is far away from the output end, or is arranged at other suitable positions through a transmission assembly.

With continued reference to fig. 3, the electrically controlled hydraulic motor 100 further includes a mounting plate 102 and a mounting plate 105. The mounting plate 105 and the mounting plate 102 are fixed to the corresponding device by bolts, and the cylinder block 10 may also be fixedly connected to the base of the corresponding device by bolts or the like. The plunger assemblies are uniformly distributed on the oil cylinder body 10 in a proper number according to working condition requirements, in other words, the plunger cylinders in a proper number are firstly arranged on the oil cylinder body 10, and the plunger assemblies are arranged in the plunger cylinders in a one-to-one correspondence mode.

When the rotary disc 12 is at a certain position, the angle sensor 15 connected with the power output shaft 13 is used for measuring the rotation angle of the rotation output assembly relative to the oil cylinder body 10 and outputting a detection result (angle position) to the controller, the controller is used for judging and controlling the two-way cartridge valve 11 to act according to the detection result of the angle sensor 15, namely the controller sends an electrifying or deenergizing instruction to the two-way cartridge valve 11, and high-pressure hydraulic oil provided by a hydraulic system acts on the plunger assembly through the two-way cartridge valve 11. So that the plunger assembly moves along the axial direction of the plunger cylinder of the oil cylinder body 10 under the action of the hydraulic system, high-pressure hydraulic oil is injected into the bottom of the plunger 05 of the plunger cylinder through the oil inlet or oil return channel of the oil cylinder body 10, and the plunger 05 drives the roller 06 to reciprocate under the pressure action of the high-pressure hydraulic oil.

The roller 06 presses against the inner guide surface 125 of the turntable 12, and since the cylinder block 10 is stationary, the roller 06 drives the torque of the external load, thereby pushing the turntable 12 to rotate counterclockwise (in the illustrated configuration). By means of a corresponding mechanical connection, the rotary disk 12 drives the power take-off shaft 13 rotatably connected relative to the cylinder block 10.

Further, the cylinder block 10 includes an action surface 101 on the outer periphery, and the plunger cylinders are opened uniformly perpendicular to the action surface 101. The turntable 12 comprises a guide surface 125 on the inner wall, which guide surface 125 cooperates with the active surface 101, and the plunger assembly is able to act on the guide surface 125 when the plunger assembly is moved by the hydraulic system.

Optionally, the number of the plunger assemblies is 2N, the 2N plunger assemblies are uniformly arranged around the outer circumferential wall of the oil cylinder body 10, the central axes of all the plunger assemblies pass through the center of the oil cylinder body 10, and the two plunger assemblies with the central axes positioned on the same straight line form a group.

In the present embodiment, the number of the two-way cartridge valves 11 is N, one two-way cartridge valve 11 is simultaneously communicated with the plunger cylinders where the group of plunger assemblies are located, and one two-way cartridge valve 11 is used for simultaneously controlling the movement of the group of plunger assemblies.

The electric control hydraulic motor 100 provided by the application has the working principle that:

fig. 4 is a logic control diagram of an oil distribution system of the two-way cartridge valve 11 (an expanded view of the electrically controlled hydraulic motor 100 in the circumferential direction in fig. 2), fig. 5 is a schematic diagram of oil inlet and oil return of each oil cylinder under a low-speed working condition of the electrically controlled hydraulic motor 100, and fig. 6 is a schematic diagram of oil inlet and oil return of each oil cylinder under a high-speed working condition of the electrically controlled hydraulic motor 100. Fig. 5 and fig. 6 show two control diagrams of the electric control logic, respectively, and various rotation speeds of the electric control hydraulic motor 100 are realized through different logic control programs.

In the figure, a module 1 two-way cartridge valve 11 is connected with oil passages at the bottoms of oil cylinder plungers 05 of I and V and controls oil inlet and return; the module 2 two-way cartridge valve 11 is connected with oil passages at the bottoms of the II and VI oil cylinder plungers 05 and controls oil inlet and return, the module 3 two-way cartridge valve 11 is connected with oil passages at the bottoms of the III and VII oil cylinder plungers 05 and controls oil inlet and return, and the module 4 two-way cartridge valve 11 is connected with oil passages at the bottoms of the IV and VIII oil cylinder plungers 05 and controls oil inlet and return.

As shown in fig. 5, the electrically controlled hydraulic motor 100 operates at a low speed: the No. 1 module two-way cartridge valve 11 is powered on, the power output shaft 13 is powered off after rotating for 30 degrees, and the two-way cartridge valve 11 is powered on and off once every time the power output shaft 13 rotates for 30 degrees. Other cylinders are powered on or off once by modules at intervals of 30 degrees according to the program of the figure, and at the moment, 4 oil cylinders simultaneously feed oil at each moment, so that the hydraulic motor works at a low speed and outputs large torque.

As shown in fig. 6, the electrically controlled hydraulic motor 100 operates under high speed conditions: when the pressure of the output hydraulic oil is unchanged, the stroke of the oil cylinder is accelerated by reducing the number of the oil supply oil cylinders. For example, the module 1 two-way cartridge valve 11 is powered on, the power output shaft 13 is powered off after rotating for 30 degrees, the power output shaft 13 is powered on after rotating for 30 degrees, four oil cylinders controlled by the module 2 and the module 4 are always in an oil return state, 2 oil cylinders are guaranteed to be fed at each moment, the oil cylinders are symmetrical in oil feeding, and the radial force of the cylinder body 02 is balanced. The two-way cartridge valves 11 from the module No. 1 to the module No. 4 are sequentially switched on and off according to a program, and 2 oil cylinders feed oil at the same time at each moment, so that the high-speed operation of the hydraulic motor is realized.

The scheme of the electric control hydraulic motor 100, such as low speed and step speed (high speed), can effectively improve the problem of oil distribution port arrangement in the existing oil distribution mode due to the adoption of electric control oil distribution, and the number of oil cylinders can be increased on the existing basis of the hydraulic motor with the same structure size, and the speed regulation function of the electric control hydraulic motor 100 is illustrated by taking 8 oil cylinders as an example.

The product can be marshalled by using a control electromagnetic control valve, and at least 2 oil cylinders can be controlled to feed oil simultaneously (such as the working scheme of the high-speed motor), so that multi-stage speed change is realized.

When the energizing direction of the electromagnetic control valve is changed, the motor can be quickly reversed.

The application provides an electronic control hydraulic motor 100, set program or logic with two-way cartridge valve 11 technique with the most direct and shortest connected fuel feeding mode to the plunger subassembly in the plunger jar of pairing in group or hydro-cylinder body 10, through the action of controller control two-way cartridge valve 11, with the help of the electromagnetic suction change of controlling the electromagnetism circular telegram and outage, drive the reciprocating motion of two-way cartridge valve 11 core, realize leading-in high-pressure hydraulic oil in the working chamber of the working cylinder plunger 05 of working section according to the working sequence, and to the working chamber of the hydro-cylinder plunger 05 of non-operating condition, then in time lead-in oil tank with low pressure hydraulic pressure. The roller 06 at the end of the plunger 05 interacts with the turntable 12 by reciprocating the plunger assembly, thereby driving the electrically controlled hydraulic motor 100 to perform load rotation work.

It is understood that in other alternative embodiments, after the electrically controlled hydraulic motor 100 adopts the two-way cartridge valve 11 technology, the low-speed high-torque hydraulic motor removes the constraint of the conventional structure, and can be expanded to various other structures, such as the following three structures:

fig. 7 is a schematic diagram showing a first structure of an expansion of the electrically controlled hydraulic motor 100, and fig. 8 is a sectional view of fig. 7.

As shown in fig. 7 and 8, the cylinder block 10 has a hollow ring-shaped structure, the acting surface 101 of the cylinder block 10 is an inner surface, the plunger cylinders are uniformly arranged perpendicular to the acting surface 101, and the two-way cartridge valve 11 is fixedly arranged on the outer peripheral wall of the cylinder block 10. The rotary table 12 is arranged in the hollow cavity of the oil cylinder body 10 in a penetrating manner, the outer peripheral surface of the rotary table 12 is a guide surface 125, and the controller controls the two-way cartridge valve 11 to act, so that the plunger assembly moves along the axial direction of the plunger cylinder of the oil cylinder body 10 under the action of the hydraulic system, and is pressed against the guide surface 125 of the rotary table 12.

Optionally, the power output shaft 13 is fixedly connected with the rotary table 12 through a connecting piece, or the power output shaft 13 and the rotary table 12 are integrally formed. The power output shaft 13 is installed on the external equipment through a bearing seat, the oil cylinder body 10 drives the rotary table 12 to rotate, and then the power output shaft 13 is driven to rotate, and in the structure, the angle sensor 15 is fixed at one end, far away from the output end, of the power output shaft 13.

In the structure, the oil cylinder body 10 is a fixing device, the oil cylinder body 10 is fixed on corresponding external equipment through a mounting disc 102, plunger assemblies are uniformly distributed on an acting surface 101 of the oil cylinder body 10 according to working condition requirements in proper quantity, a curve structure outside a rotary disc 12 matched with rollers 06 is presented, when the oil cylinder body 10 is located at a certain position, an angle sensor 15 connected with a power output shaft 13 measures the rotating angle of the power output shaft 13 relative to the oil cylinder body 10 and outputs an angle position signal to a controller, the controller judges and sends a power-on or power-off command to a two-way cartridge valve 11, high-pressure hydraulic oil provided by a hydraulic system is injected into the bottom of a plunger 05 of an oil cylinder through an oil inlet or oil return channel arranged on the oil cylinder body 10 through the two-way cartridge valve 11, and the plunger 05 drives the rollers 06 to do reciprocating motion under the hydraulic pressure of the oil. The roller 06 presses against the guide surface 125 of the turntable 12, and since the cylinder 10 is stationary, when the roller 06 drives the torque of the external load, the roller can directly push the turntable to rotate clockwise (in the direction shown in the figure), thereby driving the power output shaft 13 to rotate.

Compared with the traditional hydraulic motor, the structure is simple in structure and flexible in oil distribution mode. Because of the requirement of oil circuit arrangement of the oil inlet and return plate of the traditional hydraulic motor, the oil distribution plate can only occupy the position of one axial center line, and the oil distribution mode of supplying oil from the outer side to the inner side can not be realized.

Fig. 9 is a second expanded structural sectional view of the electrically controlled hydraulic motor 100.

As shown in fig. 9, the turntable 12 is fitted around the outer peripheral wall of the cylinder block 10, the working surface 101 is the outer peripheral surface of the cylinder block 10, and the guide surface 125 is the inner peripheral surface of the turntable 12. The power output shaft 13 is a bidirectional output shaft structure, that is, the power output shaft 13 and the rotary table 12 are relatively fixed, and are rotatably disposed in the rotating shaft hole of the oil cylinder body 10, and both ends of the power output shaft are power output ends.

Further, the rotating output shaft further comprises a transmission assembly, one end of the transmission assembly is in transmission connection with the power output shaft 13, and the other end of the transmission assembly is connected with the angle sensor 15. Since both ends of the power take-off shaft 13 are output ends, the angle sensor 15 can be disposed at any position (including the cylinder block 10) where it can be installed through the transmission assembly.

Alternatively, the cylinder block 10 is fixedly installed on the corresponding external device through the mounting plate 105 and the mounting plate 102. The plunger assemblies are evenly distributed on the oil cylinder body 10 according to the working condition requirement. When the oil cylinder body 10 of the electric control hydraulic motor 100 is at a certain position, the angular position of the power output shaft 13 relative to the oil cylinder body 10 is measured by the angle sensor 15 in transmission connection with the power output shaft 13, and a signal is sent to the controller, the controller outputs an angular position signal to the hydraulic system after judging, and sends a power-on or power-off command to the two-way cartridge valve 11, so that high-pressure hydraulic oil provided by the hydraulic system is injected into the bottom of the plunger 05 of the oil cylinder through the two-way cartridge valve 11 and is arranged in an oil inlet or oil return channel of the oil cylinder body 10, and the plunger 05 drives the roller 06 to reciprocate under the hydraulic pressure of the hydraulic oil. Similarly, the roller 06 is pressed against the inner guide surface 125 of the turntable 12, and the turntable 12 is pushed to rotate counterclockwise (in the direction shown in the figure) by the torque of the external load driven by the roller 06 due to the fixation of the cylinder block 10. And the power output shaft 13 with bidirectional output is driven to do rotary motion through corresponding mechanical connection.

The structure of the traditional hydraulic motor needs the oil distribution disc to be arranged at one end of the hydraulic motor due to the requirement of oil circuit arrangement of the oil inlet and return discs, and power can be output only from one end of the power output shaft 13. The scheme enlarges the power output direction relative to the traditional hydraulic motor.

Fig. 10 is a sectional view showing an expanded third structure of the electrically controlled hydraulic motor 100.

As shown in fig. 10, the cylinder block 10 and the turntable 12 are end-face-fitted to each other. Namely, the acting surface 101 is the end surface of the oil cylinder 10, the guide surface 125 is the end surface of the rotating disc 12, the power output shaft 13 is fixed relative to the rotating disc 12, and the power output shaft 13 is rotatably arranged on the external equipment through a bearing seat. The oil cylinder body 10 is fixed, the rotating shaft hole is axially formed in the oil cylinder body 10, a plurality of plunger cylinders are uniformly distributed on the outer edge part of the oil cylinder body 10, the plunger assemblies are arranged in the plunger cylinders in a one-to-one correspondence mode, the idler wheels 06 can be in abutting press fit with the guide surface 125 of the rotary table 12, and the power output shaft 13 penetrates through the rotating shaft hole of the oil cylinder body 10 and is rotatably connected with the oil cylinder body 10.

Optionally, the oil cylinder body 10 is fixed on corresponding external equipment through the connecting piece, and the plunger subassembly is according to the operating mode demand with suitable quantity equipartition on the oil cylinder body 10. When the oil cylinder body 10 of the electric control hydraulic motor 100 is at a certain position, the angle sensor 15 connected with the power output shaft 13 is used for measuring the angle position of the power output shaft 13 relative to the oil cylinder body 10 and outputting an angle position signal to the controller, the controller judges and sends a power-on or power-off command to the two-way cartridge valve 11, high-pressure hydraulic oil provided by a hydraulic system is injected into the bottom of the plunger 05 of the oil cylinder through the two-way cartridge valve 11 and the plunger 05 drives the roller 06 to reciprocate under the action of hydraulic pressure of the hydraulic oil, wherein the plunger 05 is arranged at an oil inlet or oil return channel of the oil cylinder body 10. The roller 06 is pressed to the guide surface 125 of the rotary table 12 from the axial direction, and since the oil cylinder 10 is fixed, the roller 06 drives the torque of the external load to push the rotary table 12 to rotate, thereby driving the power output shaft 13 to make the rotary motion.

The electrically controlled hydraulic motor 100 of this structure is suitable for large-scale equipment facilities requiring a rotary table. For example, when a large forging apparatus requires a heavy weight to rotate, this structural advantage is fully realized. The roller 06 acts on the end face turntable 12 and is consistent with the axial direction, and the plunger 05 performs telescopic motion to form rotation of the end face turntable 12.

The traditional hydraulic motor has the advantages that due to the requirement of oil circuit arrangement of the oil inlet and return oil discs, the oil cylinder is parallel to the axis of the oil distribution disc, the structural design of the oil circuit is complex, the structure of the oil distribution disc is limited, the requirement on the precision of the whole machine is extremely high, the manufacturing difficulty is high, and the design scheme is difficult to implement. In addition, the conventional hydraulic motor is arranged on one side of the rotary table to work in a manner of being connected with the rotary table in a meshing manner, so that the structure of the engineering machinery becomes complicated, the manufacturing cost and the use are high, and the failure rate is high.

The electric control hydraulic motor 100 provided by the application changes the traditional hydraulic mechanical oil distribution mode, and enables the hydraulic motor oil distribution mode to be an intelligent oil distribution scheme according to the rotation angle of the motor and the oil distribution time correlation mode successfully by determining and programming the oil distribution logic of each plunger cylinder of the hydraulic motor. The oil distribution of the hydraulic motor can be implemented in a data preset mode successfully, so that the rotation speed of the hydraulic motor can be adjusted and the torque output can be adjusted through a preset mode. The defects of the traditional hydraulic motor with low rotating speed and large torque caused by structure are fundamentally overcome, and the intelligent level and various comprehensive performances of the electric control hydraulic motor 100 are improved.

When the electrically controlled inner curve type low speed high torque hydraulic motor is required to output more power, as shown in fig. 2, the diameter of the cylinder block 10 is increased to increase the outer circumference thereof so as to arrange more plunger assemblies while enlarging the size of the turntable 12 in proportion. At this time, the arrangement of the plunger assemblies will be evenly distributed on the cylinder block 10 by multiples of 2. The working principle is as described above and will not be described in detail. The core principle is that a logic diagram is compiled by a computer to control the two-way cartridge valve 11, and the two-way cartridge valve 11 supplies oil to each oil cylinder in sequence to drive the super-huge type electric control inner curve type low-speed large-torque hydraulic motor to operate. Similarly, the first, second and third configurations of the above extension can implement this embodiment.

The electric control hydraulic motor 100 technology is adopted, the control principle is the same as that of oil distribution of various hydraulic motors, a direct and simple oil way connection mode is adopted, and the problem that oil distribution discs are limited due to the structure and distributed oil cylinders are also limited is solved. Because the oil cylinder body 10 is fixed, when the linear speed of the rotary table 12 needs to be accelerated due to the increase of the size, more oil cylinders can be arranged as far as possible by adjusting the stroke of the plunger 05 and controlling the curve type of the shell within a normal working range by the high-speed two-way cartridge valve 11, oil distribution is carried out on each oil cylinder according to a data preset mode, and therefore the normal work of the super-power hydraulic motor is ensured through the preset mode. Similarly, the first, second and third configurations of the above extension can implement this embodiment.

In addition, the electric control hydraulic motor 100 provided by the application solves the defect of long-term restriction on the structure of the hydraulic motor due to the fact that the oil distribution disc structure of the traditional hydraulic motor is omitted, and solves the problem that the oil distribution disc is limited due to the structure and the arranged oil cylinder is also limited due to the adoption of the most direct and simplest oil way connection mode of the two-way cartridge valve 11 and the oil cylinder body 10. The design scheme can enlarge the diameter of the oil cylinder body 10, can arrange two-way cartridge valves 11 on two sides of the oil cylinder body 10, or thickens the oil cylinder body 10, arranges the plungers 05 in double rows, and increases more plungers 05 bodies so as to improve the output power of the electric control hydraulic motor 100.

Theoretically, the electric control hydraulic motor 100 can arrange any number of plunger cylinders on the large enough diameter of the oil cylinder 10, which fundamentally eliminates the problem of limited power of the conventional hydraulic motor.

Similarly, compared with the original hydraulic motor with the same size and model, each two-way cartridge valve 11 controls two plunger cylinder oil supply systems which are symmetrically arranged, under the technical conditions of considering the installation, maintenance, use strength and the like of the working oil cylinders, the electric control hydraulic motor 100 can also arrange more oil cylinders on the diameter of the same oil cylinder body 10 according to the requirements of working speed and torque, the oil cylinder bodies 10 are uniformly arranged, and plunger assemblies are arranged in a number which is multiple of 2. E.g., 10, 12, … 26, 26 … plunger assemblies, etc., to increase the overall power of the hydraulic motor and the specific power of the lift hydraulic motor.

The electric control hydraulic motor 100 adopts the technology of the two-way cartridge valve 11 to replace the existing mechanical oil distribution mode, and is an upgrading and updating product of the hydraulic motor. Since the oil supply principle is changed significantly, the product design requirements and the product structure are also changed significantly, the above example is only a brief description of a typical product or structure, including but not limited to the above structure, and alternative technical solutions or product mechanisms are within the scope of the present application, including but not limited to the following solutions.

The present application provides an electrically controlled hydraulic motor 100 that, in addition to the structure of fig. 2, the plunger assembly can be further configured as: the center of a certain point in the axial direction of the central shaft of the oil cylinder body 10 is used as a center for making a circle, and datum points are uniformly distributed and determined according to the number of the oil cylinders on the circumference of a 360-degree circumference. The point is used as a reference, the central line of the plunger 05 can rotate at any angle by the point, and the electric control hydraulic motor 100 is designed into different forms, and the centers of the plungers 05 forming the electric control hydraulic motor 100 can be integrated into one point or regularly arranged by any technical scheme. I.e. the way in which the cylinder block 10 acts via the rollers 06, can have various designs. The first, second and third structures of the expansion are all special structures. The following examples are also included: the plungers 05 may also be arranged in pairs of V-shaped symmetrical structures on the same reference point in the output axial direction.

Alternatively, the output mode of the power output shaft 13 can be directly and fixedly connected with the rotating disc 12 or output in an integrated forming mode.

Alternatively, the electronically controlled hydraulic motors 100 may be provided in different numbers depending on the operating speed and torque requirements. For example, plunger assemblies may be arranged on the cylinder block 10 in multiples of 2 evenly. Such as 10, 12, … 26, etc. cylinders, etc. The structure of the plunger assembly can be designed into a modularized integrated mode, and the plunger assembly is convenient to assemble, maintain and the like with the oil cylinder body 10.

Optionally, the structure of the turntable 12 is not limited to the structure shown in fig. 2, and for the single-action steering electrically-controlled hydraulic motor 100, an asymmetric curve structure may also be adopted; the structure can incline a certain angle with the central shaft; such as the end face disk type, the inner curved surface is perpendicular to the axis, and the mating surfaces for the output power take-off shaft 13 and the roller 06 can be arranged in an outer curve when the plunger assembly is arranged on the outer circle.

Optionally, the two-way cartridge valve 11 may be connected with one cylinder (realizing single-cylinder oil supply, and the electromagnetic valves are symmetrically formed into an electric control unit) or connected with two cylinders, or the two-way cartridge valve 11 may be designed into a combination body to facilitate assembly. In any way, the function of controlling hydraulic oil in an electric control mode is the technical core, and the two-way cartridge valve 11 can be assembled with the oil cylinder body 10 or can be assembled with the oil cylinder body 10 separately. The two-way cartridge 11 may be disposed on either side of the cylinder block 10, or may be disposed on both sides of the cylinder block 10, and when the electrically controlled hydraulic motor 100 is configured as described in the first and third embodiments, the two-way cartridge 11 may be disposed at any suitable position of the cylinder block 10.

Optionally, the control program or the control logic of the two-way cartridge valve 11 of the electrically controlled hydraulic motor 100 provided by the present application is not limited to the two on/off logic manners, and may also be applied to speed regulation and control of any control software of the electrically controlled hydraulic motor 100.

Optionally, the oil inlet of the electric control hydraulic motor 100 provided by the present application may be designed as an annular oil path, a plate-type hole-forming oil path, or may be externally connected to a pipe oil path, or may be combined in any of the above manners, which is not limited herein.

The application provides an automatically controlled hydraulic motor 100 on keeping the basis of original hydraulic motor function, has possessed multiple new function simultaneously. For example:

one, float state function. When all the two-way cartridge valves 11 are controlled by a program to enable all the oil cylinders to be communicated with the oil return pipeline, and the plunger 05 of each oil cylinder is in a floating state, the rotating disc 12 can be in an idle running state at the moment, and any rotating speed is realized.

In the traditional motor, because of the design relation of an oil path of an oil distribution system, the top and the lower part of an acting surface 101 are respectively provided with an oil sealing surface, and at other times, a hydraulic motor is communicated with an oil inlet path and an oil return path. Because the shell and the oil distribution disc move relatively, the traditional hydraulic motor cannot realize the function. Example (c): when part of large-scale engineering machinery needs to adopt the device, for example, the crawler-type machinery can quickly realize the actions of changing the direction of the crawler and rotating in situ; or when a large-scale facility needs a plurality of motors to work in a cooperation mode, any one motor can be stopped to work according to needs without influencing the normal work of other motors.

And secondly, a reliable braking function. When braking is needed, the control program enables all the two-way cartridge valves 11 to be powered off, the cartridge valves enable all the oil cylinders to be reliably isolated from the oil inlet and return pipelines, and high-pressure hydraulic oil in the plunger 05 is sealed to form braking force, so that the hydraulic braking function is realized.

When the oil distribution disc of the traditional hydraulic motor is designed, because the internal leakage paths are more and the hydraulic braking performance is poor, in order to ensure that the motor can be reliably braked, the traditional hydraulic motor must be additionally provided with a mechanical brake (brake). Example (c): in the occasions where reliable braking is needed for part of engineering machinery, the electric control hydraulic motor 100 is used without additionally arranging a mechanical brake, so that the system is simplified, and the cost can be saved.

And thirdly, multi-stage speed regulation function. In FIG. 6, when two sets of two-way cartridge valves 11 are energized by a program, the other two sets are de-energized, and higher speed low torque rotation is achieved. Similarly, when the rotation speed is required without needing more power, and when the flow of the hydraulic system is not changed, 4 different rotation speeds and torque outputs can be realized from high speed to low speed and from low torque to high torque by controlling the 4 groups of two-way cartridge valves 11 in the graph of fig. 6. If the electric control hydraulic motor 100 is provided with more oil cylinders, the rotating speed and the torque output state can be more, in order to balance radial force, the number of the oil cylinders which work most at each moment is half of the total number of the oil cylinders, the number of the working oil cylinders is 2 at least, but the two oil cylinders are necessarily symmetrical.

The oil distribution disc of the traditional hydraulic motor oil distribution system needs safe distance between oil holes, the oil way of the oil cylinder body 10 needs a section of oil sealing surface, and the structures limit the speed regulation function of the traditional hydraulic motor. The speed regulation mainly realizes two speeds of high speed and low speed through a complex oil distribution mechanism, and the speed regulation range and the output torque have larger difference compared with electric control.

Example (c): the large-scale driving is in operation, no matter no load or load walking, this multistage variable speed function is utilized well in the lifting process, can effectively reduce operating time, promote device efficiency.

And fourthly, double output shaft function. After the arrangement of the angle sensor 15 is adjusted, the power of the present electrically controlled hydraulic motor 100 can be formed into a biaxial output mode regardless of the structure.

The traditional motor cannot realize a double-shaft power output function due to the limitation of the oil distribution disc structure. Example (c): when a large-scale agricultural (engineering) machine needs to be provided with double grooves (multiple grooves) at the same time, a double-output-shaft mechanism can be used. The traditional motor cannot realize the function due to the constraint of the oil distribution disc structure.

Fifthly, a power-off braking function. Under special conditions, power failure or sudden power loss of the device is needed, timely and effective braking is critical, and great influence can be caused by improper treatment.

When the two-way cartridge valve 11 of the electric control hydraulic motor 100 is instantaneously powered off, each cartridge valve is locked, oil inlet and oil return paths of each oil cylinder are completely in a sealed state, and the motor is reliably braked. The motor can be used in places with higher requirements on the use of the safety performance of the power-off maintaining function. The original hydraulic motor has small adjacent oil inlet and return intervals, the inertia of the motor causes uncertainty of the positions of oil inlet and return paths between an oil cylinder hole site and an oil distribution disc, and the original hydraulic motor has no reliable hydraulic braking capability in power failure due to factors such as internal leakage of the motor and the like. Example (c): if the technology is adopted in an industrial elevator, the operation of a goods elevator and the requirement of goods can be effectively protected, and of course, if the performance is proved to be reliable, the electric control hydraulic motor 100 can also be applied to a high-rise passenger elevator.

The electronically controlled hydraulic motor 100 provided by the present application has the following advantages:

1. adopt novel oil distribution mode, optimize and promote oil feeding system. The oil distribution of the two-way cartridge valve 11 is used for replacing the traditional oil distribution mode, and an oil supply system is simplified. The problems that the arrangement quantity of oil cylinders is limited and the rotating speed and the load are adjusted by a speed adjusting element or a direction-changing variable hydraulic pump in the traditional oil distribution mode are solved. The number of the oil cylinders is increased, even the number of the symmetrically arranged oil cylinders can be an odd number, the specific power of the hydraulic motor can be improved due to the increased number, and the running stability of the shell can be improved due to the arrangement of the odd symmetrically arranged oil cylinders. The oil distribution disc is cancelled, on one hand, the complex distribution oil way of the hydraulic motor is eliminated, the leakage points and the leakage surface are reduced, on the other hand, the oil distribution technology of the two-way cartridge valve 11 is directly used, and the problems that the traditional hydraulic motor oil distribution device and the swing mechanism move relatively, the contact surface line speed is high, the device has high requirements on the contact surface of the oil cylinder body 10 and the oil distribution disc, the requirement on the cleanliness of oil products is high, and the like are fundamentally solved. The problem that once any other part is worn, the device is scrapped or the whole oil distribution mechanism is replaced, so that the maintenance and replacement cost is high is solved;

the electric control hydraulic motor 100 overcomes the design defects of large contact surface, multiple leakage paths and relatively low volumetric efficiency of the traditional motor oil distribution device.

An electric control hydraulic motor 100 is adopted, oil inlet and oil return of each oil cylinder are controlled by a standard two-position cartridge valve, and the cartridge valve has large flow capacity and small pressure loss; the sealing performance is good, and the leakage is small; the main valve core has short stroke, sensitive action, quick response and small impact; the oil stain resistance is strong, and no strict requirement is imposed on the oil liquid filtering precision; the structure is simple, the maintenance is convenient, the failure is less, the service life is long, and the work is stable and reliable; the plug-in has the parts with high universalization, standardization and serialization degrees, and is convenient to purchase. The above problems can be effectively solved by the electric control hydraulic motor 100 without an oil distribution device.

2. The output of different rotating speeds and loads is quickly realized. When braking is needed, the control program enables all the two-way cartridge valves 11 to be powered off, the cartridge valves enable all the oil cylinders to be reliably isolated from the oil inlet and return pipelines, and high-pressure hydraulic oil in the plunger 05 is sealed to form braking force, so that the hydraulic braking function is realized; when the two-way cartridge valve 11 of the electric control hydraulic motor 100 is instantaneously powered off, each cartridge valve is locked, oil inlet and oil return paths of each oil cylinder are completely in a sealed state, and the motor is reliably braked.

By adopting the hydraulic valve control and electric control technology, the electric control hydraulic motor 100 can quickly realize the functions of multi-speed, positive and negative rotation, heavy load low speed, light load high speed and the like; the double-shaft output power and other functions can be realized.

The traditional hydraulic motor is realized by adjusting the rotating speed by a speed adjusting element or a direction-changing variable hydraulic pump, and the speed adjusting range and the output torque of the traditional hydraulic motor have larger differences compared with electric control. Because the oil distribution system is limited, the oil holes of the oil distribution disc need safe distance, the oil path of the oil cylinder body 10 needs a section of oil sealing surface, and the structures limit the function of adjusting the rotating speed of the traditional hydraulic motor. Both high and low speeds are generally achievable.

The hydraulic valve control and electric control technology is adopted, the multi-stage speed regulation function can be realized, the on-off of the two-way cartridge valve 11 is controlled through a program, and the rotation at different rotating speeds and different torques can be realized, for example, the electric control hydraulic motor 100 has more oil cylinders, can be in different rotating speed and torque output forms from high speed to low speed and from low torque to high torque, the oil cylinder number with the largest rotating speed and torque output state is half of the total oil cylinder number, and the oil cylinder number with the smallest load operation is two symmetrical. As previously mentioned, the hydraulic motor may also remain idle during special conditions, such as when power is not required.

3. And the oil inlet and return is controlled by adopting a two-position cartridge valve, so that the use safety is improved. When large and medium-sized equipment facilities need effective braking and failure protection of the hydraulic motor, the traditional hydraulic motor has more internal leakage paths and smaller adjacent oil inlet and return intervals, and the position uncertainty of an oil inlet and return path between an oil cylinder hole site and an oil distribution disc is caused by the inertia of the motor. The traditional hydraulic motor has poor hydraulic braking performance, and a mechanical brake (brake) must be additionally arranged for the motor to brake reliably; in addition, the traditional hydraulic motor is not provided with reliable hydraulic braking capability when the power is cut off.

And the hydraulic valve control and electric control technology is adopted, so that various performances of the existing hydraulic motor are optimized, the specific power is higher, the structure is simple, the operation is convenient, the adjustment is fast and many, the installation is convenient, and the maintenance is simple and convenient. And so on.

In addition, the electrically controlled hydraulic motor 100 has more new functions. If braking is needed, the control program enables all the two-way cartridge valves 11 to be powered off, the cartridge valves enable all the oil cylinders to be reliably isolated from the oil inlet and return pipelines, and high-pressure hydraulic oil in the plunger 05 is sealed to form braking force, so that the hydraulic braking function is realized; when the two-way cartridge valve 11 of the electric control hydraulic motor 100 is instantaneously powered off, each cartridge valve is locked, oil inlet and oil return paths of each oil cylinder are completely in a sealed state, and the motor is reliably braked.

4. The novel structure of the product is expanded. Because of the design of an oil distribution disc, the traditional hydraulic motor has the relatively fixed existing structure and relatively difficult expansion of other structures due to the requirement on the manufacturing precision.

The hydraulic valve control and electric control technology is adopted, an oil distribution disc is omitted, and the core design problem of occupation of the space in the direction of the main shaft is solved; and a direct oil supply mode is adopted, and the overall design scheme is simplified. The end face type mode, the wheel disc outer curve mode and the double-shaft output mode can be designed easily, meanwhile, the V-shaped mode can be designed, for special needs, if the hydraulic motor is one-way steering, the asymmetrical working curved surface can be designed according to the working condition curve, and the application space of the electric control hydraulic motor 100 can be greatly improved through the novel structures.

5. A greater number of plunger assemblies may be arranged. The traditional hydraulic motor is limited by the structure and the use condition of an oil distribution disc, the number of arranged plungers 05 is greatly limited, and the output power cannot be effectively increased in a large scale.

By adopting the hydraulic valve control and electric control technology, more plungers 05 can be arranged on the oil cylinder body 10 with the same diameter according to the requirements of working speed and torque under the technical conditions of considering the installation, maintenance, use strength and the like of the working oil cylinder; the diameter of the oil cylinder body 10 can be designed to be enlarged, and a larger number of plungers 05 such as 10, 12, … 26 … can be uniformly arranged according to the multiple of 2, so that the total power of the hydraulic motor is improved.

6. Intelligent operation is supported. The control technology of the rotating speed and the load of the traditional hydraulic motor is realized by adjusting a speed adjusting element or a direction-changing variable hydraulic pump, the adjustment links are multiple, and the digital control level lifting is limited.

The electric control hydraulic motor 100 directly adopts modern programming, so that the intelligent and digital levels of a hydraulic system are greatly improved, and the comprehensive performance of the electric control hydraulic motor is upgraded; modern operation and measurement and control modes such as intellectualization and remote operation can be selected for a terminal client, the electric control hydraulic motor 100 can be synchronously butted with various engineering machines, synchronously lifted and synchronously upgraded, and an excellent problem solving scheme is provided for various engineering machines.

7. The manufacturing and use cost is reduced. The electric control hydraulic motor 100 has a simple structure, and can overcome the inherent defects of complex structure, high use cost and long service cycle of the existing hydraulic motor. The upgraded electric control hydraulic motor 100 is convenient to operate, the requirements on parts such as machining are reduced, and the manufacturing and maintenance cost is saved; the maintenance is convenient, and the industrialization is easy; the device can replace the similar products abroad at a stroke, realize the curve overtaking of the high-end core hydraulic component and reduce the foreign dependence degree of the domestic hydraulic component; and can also provide more high-end products for domestic and foreign customers.

8. And the purchase and use cost of the user equipment is reduced. By adopting a valve control electric control technology, for example, a reversing mechanism of a hydraulic system can be eliminated for a hydraulic motor needing frequent reversing; the brake device can be directly used in occasions requiring reliable braking without additionally arranging a mechanical brake, and the structures mentioned above can be directly applied to occasions requiring double-shaft power output, so that the structures simplify the system and save the cost of the whole vehicle. The use of less manpower can be realized, the energy consumption can be reduced, and the noise can be reduced; the use cost of the end user can be reduced, and the influence on the environment is reduced.

9. The electrically controlled hydraulic motor 100 can simplify the structure of the corollary equipment. The traditional hydraulic motor can only realize reversing through a reversing valve or a direction-changing variable oil pump, and has complex structure and high manufacturing cost. By adopting a valve control electric control technology, for example, a reversing mechanism of a hydraulic system can be eliminated for a hydraulic motor needing frequent reversing; the double-shaft power output device can be directly used in occasions needing reliable braking without additionally arranging a mechanical brake, and the structures needing double-shaft power output can be directly applied, so that the structures simplify the system and save the cost of the whole machine.

In a word, each oil cylinder of the electric control hydraulic motor 100 provided by the application controls oil inlet and return through the standard two-way cartridge valve 11, an oil distribution path only has static sealing and no dynamic sealing, the oil distribution sealing effect is good, and in addition, the two-way cartridge valve 11 has large flow capacity and small pressure loss; the sealing performance is good, and the leakage is small; the main valve core has short stroke, sensitive action, quick response and small impact; the oil stain resistance is strong, and no strict requirement is imposed on the oil liquid filtering precision; the structure is simple, the maintenance is convenient, the failure is less, the service life is long, and the work is stable and reliable; the plug-in has the parts with high universalization, standardization and serialization degrees, and is convenient to purchase. The electric control hydraulic motor 100 has revolutionary improvement in working performance because of the elimination of the original oil distribution device.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electric control hydraulic motor is characterized by comprising an oil cylinder body, a rotation output assembly, a plunger assembly, a cartridge valve, an angle sensor and a controller;

2. The electrically controlled hydraulic motor according to claim 1, wherein the oil cylinder body includes an action surface, and plunger cylinders are uniformly arranged on the oil cylinder body perpendicular to the action surface;

3. The electrically controlled hydraulic motor according to claim 1, wherein the number of said plunger assemblies is 2N, and two of said plunger assemblies having their central axes on the same straight line form one group;

4. The electrically controlled hydraulic motor of claim 1, wherein the number of said cartridge valves is the same as the number of said ram assemblies and corresponds one to one, and one of said cartridge valves communicates with a ram cylinder in which one of said ram assemblies is located and is adapted to control the movement of said ram assemblies within said ram cylinder.

5. The electric control hydraulic motor according to claim 2, wherein the oil cylinder body is axially provided with a rotating shaft hole, the rotation output assembly further comprises a power output shaft, the rotating disc is fixedly connected with the power output shaft, the rotating disc is sleeved on the acting surface of the oil cylinder body, the power output shaft is rotatably inserted into the rotating shaft hole, and the angle sensor is fixed to the power output shaft.

6. The electrically controlled hydraulic motor according to claim 2, wherein the cylinder block is fitted over the turntable, and the guide surface is an outer peripheral surface of the turntable.

7. The electrically controlled hydraulic motor according to claim 6, wherein the rotation output assembly further comprises a power output shaft, the power output shaft is fixedly connected to or integrally formed with the turntable, and the angle sensor is fixed to the power output shaft.

8. The electrically controlled hydraulic motor according to claim 5, wherein the power take-off shaft is a bi-directional output shaft, the rotary output assembly further comprising a transmission assembly, the angle sensor being in driving connection with the power take-off shaft via the transmission assembly.

9. The electric control hydraulic motor according to claim 2, wherein the acting surface is an end surface of the oil cylinder body, the guide surface is an end surface of the rotary table, the rotation output assembly further includes a power output shaft, the power output shaft is fixedly connected with the rotary table, the oil cylinder body is axially provided with a rotary shaft hole, and the power output shaft is rotatably inserted through the rotary shaft hole.

10. The electric control hydraulic motor according to any one of claims 1 to 9, wherein the number of the plunger assemblies is plural, the cylinder block is provided with plunger cylinders corresponding to the plunger assemblies one to one, and the controller controls the cartridge valve to drive the plunger assemblies matched with the cartridge valve to move at a preset time so as to drive the rotation output assembly to rotate in a preset direction.