CN113847299A - Rotary vane type steering engine motor - Google Patents

Abstract

The embodiment of the invention discloses a rotating vane type steering engine motor which comprises a shell, a rotor and an end cover, wherein the shell is hollow, a plurality of fixed vanes are arranged on the inner wall of the shell, a rotating gap is formed between every two adjacent fixed vanes, first curved surfaces matched with the surface shape of the rotor are arranged at the end parts of the fixed vanes, and a rotating hole is formed in the shell by matching the first curved surfaces; the outer wall of the rotor is provided with moving blades, and the rotor is rotatably inserted into the rotating hole so that the moving blades can swing in the rotating gap; the two end covers are embedded in the shell and are respectively sleeved at the two ends of the rotor; the rotor is in clearance fit with the rotating hole, the moving blades are in clearance fit with the inner wall of the shell, the end cover is in interference fit with the inner wall of the shell, and the end cover is in clearance fit with the rotor. Through the installation that omits the sealing member, can greatly reduced the degree of difficulty when actual processing assembly, improve holistic production efficiency.

Description

Rotary vane type steering engine motor

Technical Field

The invention relates to a rotating vane type steering engine motor, and belongs to the technical field of transmission devices.

Background

The sealing form of the existing rotating vane type steering engine motor generally uses a dynamic sealing structure, namely a sealing element is arranged on a moving vane, so that the rotating vane type steering engine motor is prevented from seriously leaking in the operation process. When manufacturing such a rotary vane motor, it is characterized in that

The complicated assembly process is required in the installation of the shaped sealing element, the processing and assembling difficulty in the production process is increased, and the production efficiency is influenced. Simultaneously, current commentaries on classics leaf formula steering wheel motor still has following defect: 1) when all the blades are used, system noise is high, and when the dynamic seal of one blade fails or fails, the whole steering engine cannot work; 2) the existing steering engine has lower sealing performance and service life, and the highest working pressure of a domestic rotary vane type steering engine motor is about 10MPa, which is because: the shape of the vane of the steering engine motor is basically rectangular, the sealing form of the moving vane adopts a dynamic sealing structure, namely a sealing element is arranged at the end part of the moving vane, and the dynamic sealing structure has two 90-degree folding angles, so that the sealing property and the service life are reduced; at the same time

Two tail ends of the shape movable sealing element move upwards under the pushing of oil pressure, so that the leakage amount is increased, and the maximum working pressure of the current rectangular blade rotating vane type steering engine motor can only reach about 10MPa due to the reasons.

Therefore, there is at least the following improvement requirement for high-voltage low-vibration noise rotary vane steering engine motors in the prior art: the sealing performance and the volume efficiency of the steering engine are improved, and the better volume efficiency is ensured while the pressure of the steering engine is improved (for example, the pressure is up to 20MPa or even more); the configuration of a steering engine moving blade, a control valve group and a steering engine internal flow passage are optimized, and the reliability and the fault tolerance rate of the steering engine are improved; the size of a rudder transmission device is reduced (the volume is reduced), the output torque is increased, the working vibration noise of the steering engine is reduced on the premise of realizing the miniaturization of the hydraulic steering engine, and the response speed of the steering engine is improved.

Disclosure of Invention

The invention provides a rotary vane type steering engine motor, which at least solves the technical problems in the prior art.

The invention provides a rotating vane type steering engine motor, which comprises a shell, a rotor and an end cover, wherein the shell is hollow, a plurality of fixed vanes are arranged on the inner wall of the shell, rotating gaps are formed between every two adjacent fixed vanes, first curved surfaces are arranged at the end parts of the fixed vanes, and a rotating hole is formed in the shell by matching the first curved surfaces; the outer wall of the rotor is provided with moving blades, the number of the moving blades is the same as that of the rotating gaps, and the rotor is rotatably inserted into the rotating hole so that the moving blades can swing in the rotating gaps; the two end covers are embedded in the shell and are respectively sleeved at two ends of the rotor; the rotor is in clearance fit with the rotating hole, the moving blade is in clearance fit with the inner wall of the shell, the end cover is in interference fit with the inner wall of the shell, and the end cover is in clearance fit with the rotor.

Furthermore, the rotary vane type steering engine motor further comprises a plurality of valve banks arranged outside the shell, wherein the valve banks correspond to the fixed vanes one by one, two oil ducts are arranged inside the fixed vanes, two ends of each oil duct are connected to the valve banks and the rotating gaps respectively, and the two oil ducts of the same fixed vane are communicated with the two adjacent rotating gaps respectively.

Further, a plurality of the valve groups are independent of each other.

Further, the end cover is provided with a sealing groove, and a sealing ring is arranged in the sealing groove.

Furthermore, the end cover is provided with a plurality of grooves, roller pins are embedded in the grooves, the axial direction of the roller pins is consistent with the axial direction of the rotor, and the grooves are arranged around the central shaft of the rotor in a surrounding manner.

Further, the end cover is provided with a mounting groove, and the mounting groove is internally provided with a dustproof ring.

Furthermore, the rotary vane type steering engine motor also comprises a front flange and a rear flange, the front flange is fixedly connected to the front end of the shell, and the rotor is arranged on the front flange in a penetrating manner; the rear flange is fixedly connected to the rear end of the housing.

Furthermore, one end of the rotor, which is close to the rear flange, is provided with a protruding part which protrudes out of the rear flange, and the rear flange is fixedly connected with an angle displacement sensor for testing the rotation angle of the protruding part.

Further, the protrusion is coaxial with the rotor, and the angular displacement sensor is sleeved on the protrusion and coaxial with the protrusion.

Further, the rotor has the link, the link sets up the involute spline shaft that is used for connecting.

The technical scheme of the invention has the beneficial effects that:

1) through the interference fit between end cover and the casing, clearance fit between end cover and the rotor to and the clearance fit between rotor and the casing, realize whole motor leakproofness, save the installation of sealing member simultaneously, can greatly reduced the degree of difficulty when actual processing assembly, improve holistic production efficiency.

For example, interference fit is adopted between the front end cover and the rear end cover and the motor shell, no sealing structure is adopted, the structure is simple, the processing is easy, and the leakage amount increase caused by elastic deformation generated by oil pressure after the screw is pre-tightened can be eliminated. The angular displacement sensor adopts a hollow structure connection mode, the installation size can be reduced, and the inner ring of the angular displacement sensor can be fixed through radial screws after being coaxially matched with the rotor. And a roller pin is arranged between the motor rotor and the front end cover, and a groove for mounting the roller pin group is processed on the front end cover. After the roller pins are assembled, the outer diameter of the roller pin group can be matched with the front end cover, and the inner diameter of the roller pin ring is matched with the outer diameter of the rotor. The front end of the motor rotor is provided with a spline shaft which is used for being connected with an external transmission shaft. In addition, the internal structure of the motor is suitable for high pressure design and comprises an end cover, a stator, a rotor, a blade and other components.

2) The mechanical seal, the working pressure and the volume efficiency of the steering engine motor are optimized, the working pressure of the steering engine motor can be improved to be more than 20MPa by accurately controlling the gap between the moving blade of the steering engine motor and the shell, particularly by the technical means of high-pressure blade motor, interference fit, gap seal, spline shaft connection output torque and the like, and the volume efficiency is ensured to be not lower than 90%. Meanwhile, an internal flow channel is optimized, the reliability and the fault tolerance rate of the steering engine are improved, and the hierarchical control under different loads can be realized. In addition, a grading control technology can be adopted to match the load and the output of the steering engine motor, so that the vibration noise of the steering engine motor during working is reduced, and the working reliability is improved. And moreover, the hydraulic steering engine is miniaturized to a certain extent on the premise that the motor has large output torque and can directly push a rudder stock.

3) The moving blade of the rotating blade type steering engine motor is not provided with a moving sealing element, and the sealing performance of the rotating blade type steering engine motor is ensured by controlling the working clearance between the moving blade and the shell.

Drawings

FIG. 1 is an exploded view of a rotary vane steering engine motor according to an embodiment of the present invention;

FIG. 2 is a schematic view of one angle of a rotary vane steering engine motor according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of section B of FIG. 3;

FIG. 5 is a schematic view of another angle of a rotary vane steering engine motor according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;

FIG. 7 is an enlarged view of section D of FIG. 6;

FIG. 8 is a schematic view of the housing of a rotary vane steering engine motor according to an embodiment of the present invention;

FIG. 9 is a schematic view of the rotor of a rotary vane steering engine motor according to an embodiment of the present invention.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the descriptions of upper, lower, left, right, top, bottom, etc. used in the present invention are only relative to the positional relationship of the components of the present invention with respect to each other in the drawings.

Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

Referring to fig. 1 to 9, the rotary vane type steering engine motor according to the embodiment of the present invention includes a housing 100, a rotor 200, and an end cover 300, wherein the housing 100 is hollow, the inner wall of the housing 100 is provided with a plurality of fixed vanes 110, two adjacent fixed vanes 110 are provided with a rotation gap 120, the end of each fixed vane 110 is provided with a first curved surface 111 matching the surface shape of the rotor 200, and the plurality of first curved surfaces 111 cooperate to form a rotation hole 112 in the housing 100; the outer wall of the rotor 200 is provided with moving blades 210, the number of the moving blades 210 is the same as that of the rotating gaps 120, and the rotor 200 is rotatably inserted into the rotating hole 112 so that the moving blades 210 can swing in the rotating gaps 120; the end caps 300 are embedded in the casing 100, and two end caps 300 are provided and respectively sleeved at two ends of the rotor 200; the rotor 200 is in clearance fit with the rotary hole 112, the end cover 300 is in interference fit with the inner wall of the casing 100, and the end cover 300 is in clearance fit with the rotor 200.

Referring to fig. 3 and 8, in the rotary vane type steering engine motor according to the embodiment of the present invention, the sealing performance of the entire motor is realized through the interference fit between the end cover 300 and the housing 100, the clearance fit between the end cover 300 and the rotor 200, and the clearance fit between the rotor 200 and the housing 100, so as to provide the working pressure of the rotary vane type steering engine motor, and simultaneously, the installation of the sealing member is omitted, so that the difficulty can be greatly reduced during the actual processing and assembly, and the overall production efficiency is improved.

The rotating vane type steering engine motor is driven by high-pressure hydraulic oil, and an external hydraulic oil source for outputting the high-pressure hydraulic oil injects the high-pressure hydraulic oil into the rotating gap 120 to drive the moving blades 210 in the rotating gap 120 to move, so that the rotor 200 is driven to rotate, and the purpose of driving components connected with the rotor 200 to rotate is achieved.

Specifically, referring to fig. 3, after the rotor 200 is installed in the casing 100, the rotor blade 210 is embedded in the rotating gap 120 (i.e. between two adjacent stator blades 110), and the rotor blade 210 separates the rotating gap 120 between the two stator blades 110 into a first cavity 121 and a second cavity 122 which are independent of each other, and referring to fig. 4, the rotating gap 120 of this portion is taken as an example:

if oil is supplied to the first cavity 121, the second cavity 122 needs to return oil to drive the moving blade 210 to swing clockwise, so as to drive the entire rotor 200 to rotate clockwise;

if oil is supplied to the second cavity 122, the first cavity 121 needs to be returned to drive the moving blade 210 to swing counterclockwise, so as to drive the entire rotor 200 to rotate counterclockwise;

it should be noted that the rotary vane type steering engine motor according to the embodiment of the present invention is a reciprocating type steering engine motor, and therefore, the moving blade 210 in the rotating gap 120 swings between two adjacent fixed blades 110.

It should be emphasized that, referring to fig. 8, the housing 100 is hollow, that is, the through hole 130 is provided inside, and the fixed vane 110 is provided on the inner wall of the through hole 130, in order to match the moving track of the rotor 200 and the moving vane 210 on the rotor 200, the cross section of the through hole 130 should be circular, and the rotating hole 112 should be located in the through hole 130, wherein the first curved surfaces 111 of the fixed vanes 110 have the same geometric center, therefore, referring to fig. 8, in the cross section, the first curved surfaces 111 of the fixed vanes 110 all belong to a partial line segment of the same circle, and the circle where the first curved surfaces 111 are located is the rotating hole 112. Similarly, the outer walls of the plurality of moving blades 210 provided on the rotor 200 are fitted to the inner wall of the through hole 130, and the outer walls of the moving blades 210 can be regarded as partial walls of the outer wall of a complete cylinder.

In the embodiment of the present invention, the rotor 200 is in clearance fit with the rotor hole 112, and the rotor blade 210 is in clearance fit with the inner wall of the casing 100, which means that after the rotor 200 is assembled in the casing 100, the rotor 200 is in clearance fit with the rotor hole 112, and the cylindrical body formed by the rotor blade 210 and provided on the outer wall of the rotor 200 is in clearance fit with the inner wall of the through hole 130. Wherein, clearance fit can provide the space of motion when relative motion takes place between rotor 200 and casing 100, provides sealed effect simultaneously to avoid taking place to leak, specifically speaking, clearance seal utilizes the tiny clearance between the moving part to carry out sealed effect, and this tiny clearance needs to carry out adaptability adjustment and control according to specific structure and specific material, thereby can increase the pressure of leaking oil and reduce or even stop the oil leakage through clearance seal.

On the other hand, referring to fig. 5 and 6, the end caps 300 are used for being assembled at two ends of the casing 100 and sleeved at two ends of the rotor 200, so as to constrain the freedom degree of the internal moving blades 210, so that the moving blades 210 can only rotate around the axis of the rotor 200 without jumping in the axial direction, and the reliability of the driving of the rotating blade type steering engine motor is improved. Wherein, the through-hole 130 through end cover 300 and casing 100 uses interference fit when the assembly, and the centre bore of end cover 300 and rotor 200 use clearance fit when the assembly, improve the leakproofness of rotary vane steering wheel motor.

In order to ensure the gap between the end cap 300 and the rotor 200, a high coaxiality between the center hole of the end cap 300 for penetrating the rotor 200 and the through hole 130 of the housing 100 should also be ensured.

Specifically, in the rotary vane type steering engine motor according to the embodiment of the present invention, the rotor 200 and the rotary hole 112 are in clearance fit, the moving blade 210 and the inner wall of the casing 100 are in clearance fit, and the end cover 300 is in interference fit with the through hole 130 of the casing 100 and the rotor 200 respectively during assembly, so that the whole rotary vane type steering engine motor can be miniaturized and can bear a larger oil pressure, and it should be mentioned that the above-mentioned larger oil pressure specifically means that the rotary vane type steering engine motor according to the embodiment of the present invention can work in a state of greater than or equal to 20 Mpa.

In addition, most of the existing motors can only work within 10Mpa, the steering engine is easily damaged due to overhigh oil pressure, and compared with the existing motors, the rotary vane type steering engine motor disclosed by the embodiment of the invention has the advantages that the high reliability can be kept when the rotary vane type steering engine motor works under high pressure through clearance seal design and interference fit among a plurality of accessories, so that stable high torque can be output.

In order to achieve the above-mentioned purpose of driving the moving blade 210 to swing through an external hydraulic oil source, in some embodiments, the rotating blade type steering engine motor further includes a plurality of valve banks 400 installed outside the housing 100, wherein the valve banks 400 correspond to the fixed blades 110 one to one, two oil passages 113 are provided inside the fixed blades 110, two ends of each oil passage 113 are respectively connected to the valve banks 400 and the rotating gaps 120, and the two oil passages 113 of the same fixed blade 110 are respectively connected to two adjacent rotating gaps 120.

One end of the valve block 400 is connected to an external hydraulic oil source for driving, and the other end is connected to the outer wall of the housing 100, and controls the on/off of a passage from the oil passage 113 to the external hydraulic oil source, that is, the external hydraulic oil source is directly communicated with the oil passage 113, and oil supply and oil return can be realized through the oil passage 113, wherein, referring to fig. 4, the following two conditions are provided in the two oil passages 113 of the fixed vane 110:

first, if the left oil channel 113 is used for oil return, the right oil channel 113 should be used for oil supply, wherein the moving blade 210 on the left side of the fixed blade 110 will transport the oil in the second cavity 122 back to the external hydraulic oil source through the left oil channel 113 during the movement, and the moving blade 210 on the right side of the fixed blade 110 will transport the high-pressure hydraulic oil in the external hydraulic oil source to the first cavity 121 through the right oil channel 113 during the movement, so as to push the moving blade 210 on the right side to move, that is, to drive the entire rotor 200 to move along the direction E;

secondly, if the right oil passage 113 is used for oil return, the left oil passage 113 should be used for oil supply, wherein the moving blade 210 on the right side of the fixed blade 110 will transport the oil in the first cavity 121 back to the external hydraulic oil source through the right oil passage 113 during the movement, and the moving blade 210 on the left side of the fixed blade 110 will transport the high-pressure hydraulic oil in the external hydraulic oil source to the second cavity 122 through the left oil passage 113 during the movement, so as to push the moving blade 210 on the left side to move, that is, to drive the entire rotor 200 to move along the direction F.

It should be mentioned that, in some embodiments, the plurality of fixed blades 110 should have the same dimension and should be arranged around the rotation axis of the rotor 200 at equal intervals, and the plurality of moving blades 210 should also have the same dimension and should be arranged around the rotation axis of the rotor 200 at equal intervals, in the above structure, the moving track and the moving path of each moving blade 210 in each rotating gap 120 can be ensured to be the same, and the position of each moving blade 210 relative to the rotating gap 120 where it is located is ensured to be the same after rotating for the same time in unit time, so as to ensure the reliability and the stability of the movement of the whole steering engine motor, avoid the problem of movement interference, also keep the torque output by the rotor 200 stable, and facilitate the stability of the output driving force.

In the rotary vane type steering engine motor according to an embodiment of the present invention, the plurality of valve blocks 400 disposed outside the housing 100 are independent from each other, and the actual operating conditions are the same. A plurality of relatively independent valves 400 can work alone, also can work in parallel in order to increase the rotational speed of steering wheel motor to realize steering wheel motor's output torque's hierarchical control. Specifically, in the practical application process, referring to fig. 3, the rotary vane type steering engine motor according to an embodiment of the present invention has three fixed vanes 110, three moving vanes 210 and three rotating gaps 120, and correspondingly, three valve banks 400 are provided to connect three mutually independent external hydraulic oil sources, and in practical use, only one, two or three valve banks 400 may be selectively activated, so as to provide three levels of output torque control for the rotor 200.

In addition, it should be noted that a plurality of independent valve blocks 400, one or more of which can be selectively opened by a user, have a backup function. When the sealing performance between one of the fixed blades 110 and the rotor 200 is insufficient, the rotating gaps 120 on two sides of the fixed blade 110 can be mutually leaked, so that in actual use, the valve group 400 can be opened without starting the other valve group 400, backup power is provided for the whole steering engine motor, the phenomenon that the whole steering engine motor cannot normally work due to the fact that one of the fixed blades 110 is damaged or abraded is avoided, and the service life of the steering engine motor is prolonged.

Further, referring to fig. 7, in order to improve the sealing property between the rotor 200 and the end cover 300, in some embodiments, the rotor 200 is provided with a sealing groove in which a sealing ring 310 is disposed; similarly, in other embodiments, the end cap 300 is provided with a sealing groove in which a sealing ring 310 is disposed; through set up sealing ring 310 between rotor 200 and end cover 300, improve the leakproofness of cooperation between rotor 200 and the end cover 300, be clearance fit between rotor 200 and the end cover 300, make the leakproofness variation easily at the in-process of activity, can improve the leakproofness between rotor 200 and the end cover 300 effectively through setting up sealing ring 310, avoid the steering wheel motor to take place to leak.

It should be noted that, in a specific embodiment, the rotor 200 and the end cover 300 are provided with sealing grooves, and the groove-shaped structure formed by the splicing of the sealing grooves of the rotor 200 and the end cover 300 is consistent with the shape of the sealing ring 310, so that the sealing ring 310 can be embedded between the rotor 200 and the end cover 300 and provide a sealing effect.

In addition, in order to improve the sealing performance of the whole steering engine motor by matching with a sealing ring, in some embodiments, referring to fig. 7, the rotor 200 and/or the end cover 300 is provided with a mounting groove, and a dust-proof ring 320 is arranged in the mounting groove. Through setting up dirt ring 320 can effectively avoid the outside dust impurity of steering wheel motor to fall into steering wheel motor's inside, influence the rotation of rotor 200, improve steering wheel motor reliability and stability of operation. The mounting groove may be provided on the rotor 200 or the end cover 300, or both the rotor 200 and the end cover 300 may be provided with a groove-shaped structure, and the dust-proof ring 320 may be embedded after being spliced.

In actual operation, the rotor 200 and the end cover 300 can rotate relatively, and the friction force between the rotor 200 and the end cover 300 can affect the rotation of the rotor 200, so as to affect the torque output by the steering engine motor, therefore, further, referring to fig. 7, the rotor 200 and/or the end cover 300 is provided with a plurality of grooves, the grooves are embedded with the roller pins 330, the axial direction of the roller pins 330 is consistent with the axial direction of the rotor 200, and the grooves are arranged around the central axis of the rotor. Sliding friction is replaced by rolling friction, so that the friction force between the rotor 200 and the end cover 300 is reduced, the rotor 200 can rotate more smoothly, the relative rotation between the rotor 200 and the end cover 300 is prevented from being blocked, the stability of the output torque of a steering engine motor is improved, and the stability of the operation of the whole equipment is further ensured.

Further, in order to fixedly assemble the whole rotary vane type steering engine motor, so that the rotary vane type steering engine motor is combined into a whole, referring to fig. 1, the rotary vane type steering engine motor further comprises a front flange 500 and a rear flange 600, the front flange 500 is fixedly connected to the front end of the shell 100, and the rotor 200 is inserted into the front flange 500; the rear flange 600 is fixedly coupled to the rear end of the housing 100. The end covers 300 at two ends of the rotor 200 are respectively compressed by the front flange 500 and the rear flange 600, so that the end covers 300, the shell 100 and the rotor 200 are tightly matched, and a complete rotary vane type steering engine motor is assembled for a user to use.

It needs to mention that, in order to know its pivoted angle of steering wheel motor driven spare part in real time to convenience of customers monitors and debugs whole equipment, further, the one end that rotor 200 is close to rear flange 600 is provided with protruding portion 220, and protruding portion 220 protrusion in rear flange 600, and rear flange 600 fixedly connected with is used for testing protruding portion 220 turned angle's angular displacement sensor 700. Protruding portion 220 is outstanding outside rear flange 600, and in the in-process of using, utilizes angular displacement sensor 700 to measure protruding portion 220 pivoted angle, because protruding portion 220 is fixed in on the rotor 200, consequently, protruding portion 220 rotates along with the rotation of rotor 200, consequently, detects protruding portion 220's turned angle, just can reachs rotor 200 pivoted angle, and then the person of facilitating the use knows the turned angle that steering wheel motor exported in real time to whole equipment's operation is monitored.

It should be noted that, referring to fig. 5, in order to obtain the rotation angle of the rotor 200, the protrusion 220 and the rotor 200 are coaxial, and the coaxial protrusion 220 and the rotor 200 rotate around the same rotation axis during the rotation process, so the rotation angle of the rotor 200 is the same as the rotation angle of the protrusion 220, the rotation angle of the protrusion 220 measured by the angular displacement sensor 700 is the rotation angle of the rotor 200 in the actual operation, and meanwhile, in order to make the structure of the whole steering engine motor more compact, in some embodiments, the angular displacement sensor 700 is sleeved on the protrusion 220 and is coaxial with the protrusion 220. The angular displacement sensor 700 that the protruding portion 220 was located to the cover can reduce holistic mounting dimension to make the structure of whole steering wheel motor more compact, wherein, angular displacement sensor 700 is establishing behind protruding portion 220, needs to realize fixedly through the structure and the back flange 600 that are used for the rigid coupling such as screw.

The rotor 200 is used for connecting with other parts in the equipment, so as to twist the output of the parts and further drive the parts to rotate, therefore, the rotor 200 further has a connecting end, and referring to fig. 9, the connecting end is provided with a spline shaft 230 for connection. The connection end is the end of the rotor 200 far from the protrusion 220, that is, the end of the rotor 200 near the front flange 500, and the spline shaft 230 is provided at the connection end to facilitate the connection between the rotor 200 and the transmission shaft of the external component via the spline shaft 230. Specifically, in actual operation, the spline shaft 230 is coupled to the rudder stock, and the rotary vane type steering engine motor can be driven by the above-mentioned high-pressure hydraulic oil, so that a larger torque is output through the spline shaft 230.

The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present disclosure should be included in the scope of the present disclosure as long as the technical effects of the present invention are achieved by the same means. Are intended to fall within the scope of the present invention. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.

List of reference numerals

100. Shell body

110. Fixed blade

111. First curved surface

112. Rotary hole

113. Oil duct

120. Rotational play

121. The first cavity

122. Second cavity

130. Through hole

200. Rotor

210. Moving blade

220. Projection part

230. Spline shaft

300. End cap

310. Sealing ring

320. Dust-proof ring

330. Needle roller

400. Valve group

500. Front flange

600. Rear flange

700. An angular displacement sensor.

Claims (10)

1. A rotary vane steering engine motor, comprising:

the inner wall of the shell (100) is provided with three fixed blades (110), a rotating gap (120) is formed between every two adjacent fixed blades (110), the end part of each fixed blade (110) is provided with a first curved surface (111), and the first curved surfaces (111) are matched to form a rotating hole (112) in the shell (100);

a rotor (200), the outer wall of which is provided with moving blades (210), the number of the moving blades (210) is the same as that of the rotating gaps (120), and the rotor (200) is rotatably inserted into the rotating hole (112) so that the moving blades (210) can swing in the rotating gaps (120);

the end covers (300) are embedded in the shell (100), and two end covers (300) are arranged and are respectively sleeved at two ends of the rotor (200);

the rotor (200) is in clearance fit with the rotating hole (112), the moving blades (210) are in clearance fit with the inner wall of the shell (100), the end cover (300) is in interference fit with the inner wall of the shell (100), and the end cover (300) is in clearance fit with the rotor (200).

2. The rotary vane steering engine motor of claim 1, further comprising:

a plurality of valve blocks (400) mounted to the outside of the housing (100);

the valve group (400) and the fixed blades (110) are in one-to-one correspondence, two oil passages (113) are arranged inside the fixed blades (110), two ends of each oil passage (113) are connected to the valve group (400) and the rotating gaps (120), and the two oil passages (113) of the fixed blades (110) are communicated with the adjacent rotating gaps (120) respectively.

3. A rotary vane steering engine motor according to claim 2, wherein a plurality of said valve packs (400) are independent of each other.

4. Rotary vane steering engine motor according to claim 1, characterized in that the end cover (300) is provided with a sealing groove in which a sealing ring (310) is built.

5. The rotary vane steering engine motor according to claim 1, wherein the end cap (300) is provided with a plurality of grooves, the grooves are embedded with roller pins (330), the axial direction of the roller pins (330) is consistent with the axial direction of the rotor (200), and the plurality of grooves are arranged around the central axis of the rotor (200).

6. Rotary vane steering engine motor according to claim 1, characterized in that the end cap (300) is provided with a mounting groove in which a dust ring (320) is placed.

7. The rotary vane steering engine motor of claim 1, further comprising:

a front flange (500) fixedly connected to the front end of the housing (100), the rotor (200) being inserted into the front flange (500);

a rear flange (600) fixedly connected to a rear end of the housing (100).

8. The rotary vane type steering engine motor according to claim 7, wherein a protrusion (220) is disposed at one end of the rotor (200) close to the rear flange (600), the protrusion (220) protrudes out of the rear flange (600), and an angular displacement sensor (700) for testing the rotation angle of the protrusion (220) is fixedly connected to the rear flange (600).

9. The rotary vane steering engine motor according to claim 8, wherein the protrusion (220) is coaxial with the rotor (200), and the angular displacement sensor (700) is sleeved on the protrusion (220) and is coaxial with the protrusion (220).

10. Rotary vane steering engine motor according to claim 1, characterized in that the rotor (200) has a connection end provided with a splined shaft (230) for connection.

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