阅读说明：本技术 一种单向液压马达 (one-way hydraulic motor ) 是由 杨甫在 于 2019-09-16 设计创作，主要内容包括：本发明涉及液压马达技术领域,公开了一种单向液压马达,包括壳体,壳体内开设有空腔,空腔上开有液体入口和液体出口,壳体向空腔外凸出形成第一轮廓,壳体向空腔内凸出形成第二轮廓,第一轮廓与第二轮廓之间形成有过渡轮廓,壳体内转动连接有能与第二轮廓相切的主轮,主轮上转动连接有叶片,叶片的轴线与主轮轴线平行,叶片与主轮连接处固接有复位弹簧,主轮上沿轴向开设有供叶片转动的缺口,叶片远离主轮的一端用于与壳体内壁密封相切,叶片上开有通孔,当叶片与缺口边缘相抵时,通孔中无液体通过,当叶片与过渡轮廓相切时,通孔中有液体通过。本发明结构设计简单,降低了中间的能量损耗,从而提高了能量的转化率,同时也降低了加工的成本。(The invention relates to the technical field of hydraulic motors, and discloses a one-way hydraulic motor which comprises a shell, wherein a cavity is formed in the shell, a liquid inlet and a liquid outlet are formed in the cavity, the shell protrudes outwards to form a first contour, the shell protrudes inwards to form a second contour, a transition contour is formed between the first contour and the second contour, a main wheel which can be tangent to the second contour is rotatably connected in the shell, blades are rotatably connected on the main wheel, the axes of the blades are parallel to the axis of the main wheel, a return spring is fixedly connected at the joint of the blades and the main wheel, a notch for the rotation of the blades is axially formed in the main wheel, one end, far away from the main wheel, of each blade is used for being in sealing tangent with the inner wall of the shell, through holes are formed in the blades, when the blades abut against the edges of the notches, no liquid passes through the through holes, and when the blades are tangent to. The invention has simple structure design, reduces the energy loss in the middle, thereby improving the energy conversion rate and reducing the processing cost.)

1. The utility model provides an one-way hydraulic motor, includes the casing, has seted up the cavity in the casing, and it has liquid inlet and liquid outlet, its characterized in that to open on the cavity: the casing forms first profile to the outer protrusion of cavity, the casing forms the second profile to the protruding formation in the cavity, be formed with the transition profile between first profile and the second profile, the rotation is connected with can be with the tangent main wheel of second profile in the casing, the rotation is connected with the blade on the main wheel, the axis of blade is parallel with the main wheel axis, reset spring is installed with the main wheel junction to the blade, offer along the axial on the main wheel and supply blade pivoted breach, the one end that the main wheel was kept away from to the blade is used for being tangent with shells inner wall is sealed, it has the through-hole to open on the blade, when blade and breach edge offset, no liquid passes through in the through-hole, when blade and transition profile are tangent, there is liquid to pass through in the through-.

2. A unidirectional hydraulic motor as claimed in claim 1, wherein: the blades are evenly distributed on the main wheel.

3. A unidirectional hydraulic motor as claimed in claim 2, wherein: the number of the blades is at least four.

4. a unidirectional hydraulic motor as claimed in claim 3, wherein: the liquid inlet comprises a first liquid inlet and a second liquid inlet, the liquid outlet comprises a first liquid outlet and a second liquid outlet, the first liquid inlet and the second liquid outlet are located on the same side of the shell, and the second liquid inlet and the first liquid outlet are located on the same side of the shell.

5. A unidirectional hydraulic motor as claimed in claim 4, wherein: the first liquid inlet and the first liquid outlet are arranged oppositely, and the second liquid inlet and the second liquid outlet are arranged oppositely.

6. A unidirectional hydraulic motor as claimed in claim 5, wherein: and a high-pressure pipe is communicated between the first liquid inlet and the second liquid inlet, and a low-pressure pipe is communicated between the first liquid outlet and the second liquid inlet.

Technical Field

The invention relates to the technical field of hydraulic motors, in particular to a one-way hydraulic motor.

Background

The hydraulic motor is an actuator of the hydraulic system, which converts the hydraulic pressure energy provided by the hydraulic pump into mechanical energy (torque and rotational speed) of its output shaft. Wherein a liquid is a medium that transmits forces and movements.

The existing hydraulic motors are various, similar telescopic vane hydraulic motors are few in use in industry due to the fact that vanes need to retract, and due to the fact that angles exist, friction is large, energy loss is large, and due to the defects that abrasion is large, service life is short, and the like. In addition, the piston type hydraulic motor is the highest in energy utilization, when in work, the piston type hydraulic motor firstly reciprocates and then converts the reciprocating motion into rotary motion, so that the pressure energy of the liquid is converted into the mechanical energy of the output shaft to be output. However, the process of converting the reciprocating motion of the piston type hydraulic motor into the rotating motion needs to be realized by arranging a conversion mechanism, the structure of the conversion mechanism is generally complex, the friction loss between parts is large in the operation process, and the energy loss in the conversion process is large, so that the piston type hydraulic motor is easy to cause large energy loss in the rotation process, and the cost is increased.

disclosure of Invention

The invention aims to provide a one-way hydraulic motor, which solves the problems of short service life and high energy loss caused by overlarge friction force of blades of the existing telescopic hydraulic motor due to the opening angle during retraction, and solves the problems of complex structure and high energy loss caused by the fact that the reciprocating motion of the existing piston type hydraulic motor is converted into the rotary motion.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

The utility model provides an one-way hydraulic motor, which comprises a housin, the cavity has been seted up in the casing, it has liquid entry and liquid outlet to open on the cavity, the casing outwards protrudes to the cavity and forms first profile, the casing inwards protrudes to form the second profile in the cavity, be formed with the transition profile between first profile and the second profile, it can be with the tangent main wheel of second profile to rotate to be connected with in the casing, it is connected with the blade to rotate on the main wheel, the axis of blade is parallel with the main wheel axis, reset spring is installed with the main wheel junction to the blade, offer along the axial on the main wheel and supply blade pivoted breach, the one end that the main wheel was kept away from to the blade is used for sealing tangent with shells inner wall, it has the through-hole to open on the blade, when blade offsets with the breach edge, no liquid passes through in the through-hole.

Compared with the prior art, the invention has the following principle and beneficial effects: when the liquid inlet is used, high-pressure liquid enters the shell from the liquid inlet, the blade is abutted to the edge of the notch, so that the through hole is in a closed state, the liquid cannot flow to the other side of the blade from one side of the blade through the through hole, and the blade and the main wheel divide the cavity into a high-pressure area close to one side of the liquid inlet and a low-pressure area close to one side of the liquid outlet. Because of the pressure difference between the two sides of the blade, the liquid at one side of the high-pressure area pushes the blade to rotate to the low-pressure area, and the blade drives the main wheel to rotate along with the main wheel by abutting against the edge of the notch in the rotating process of the blade; the blade continues to rotate, when the blade rotates to be tangent to the transition profile, the blade is separated from the edge of the notch due to the effect of the transition profile on the blade, the return spring is deformed at the moment, part of liquid passes through the through hole, namely, the liquid can flow from the high-pressure area to the low-pressure area through the through hole to form equal pressure, the high-pressure area and the low-pressure area are separated by the next blade at the moment, and finally, the liquid flows out of the cavity from the liquid outlet, so that the transmission that the pressure energy of the liquid is converted into the mechanical energy output of the main wheel is completed.

The invention realizes the driving of the blade by utilizing the pressure difference of the liquid on the two sides of the blade, and drives the main wheel to rotate by utilizing the rotation of the blade through the abutting of the blade and the edge of the gap, thereby outputting the mechanical energy by the main wheel and further converting the pressure energy of the liquid into the mechanical energy. In addition, through set up the through-hole on the blade, realize that the blade is opened both sides liquid and pass through fast, reduce the resistance of blade when opening. The invention has simple structure design, reduces the energy loss in the middle, thereby improving the energy conversion rate and reducing the processing cost.

Further, the blades are evenly distributed on the main wheel. The uniform distribution is formed, the balance degree is increased, the power transmission can be better carried out, and the energy loss is reduced.

Further, the number of the blades is at least four. For better transmission.

Further, the liquid inlet comprises a first liquid inlet and a second liquid inlet, the liquid outlet comprises a first liquid outlet and a second liquid outlet, the first liquid inlet and the second liquid outlet are located on the same side of the shell, and the second liquid inlet and the first liquid outlet are located on the same side of the shell. High-pressure liquid gets into the cavity from first liquid entry and second liquid entry respectively, then promotes the both sides blade rotation that corresponds, gets into high-pressure liquid simultaneously through both sides, can improve blade pivoted speed to improve hydraulic motor's efficiency. The high pressure liquid entering from the first liquid inlet and the second liquid inlet will flow out of the cavity from the first liquid outlet and the second liquid outlet, respectively, thereby completing the energy conversion.

Furthermore, the first liquid inlet and the first liquid outlet are arranged oppositely, and the second liquid inlet and the second liquid outlet are arranged oppositely. Through the relative arrangement, the main wheel can be stressed uniformly, the load of the bearing is reduced, the friction force of the bearing is reduced, and therefore the energy loss is reduced.

Furthermore, a high-pressure pipe is communicated between the first liquid inlet and the second liquid inlet, and a low-pressure pipe is communicated between the first liquid outlet and the second liquid inlet. The high-pressure pipe and the low-pressure pipe can be arranged outside the shell and also can be arranged in the shell, the occupied space of equipment can be reduced by arranging the high-pressure pipe and the low-pressure pipe in the shell, and different purposes can be realized by different arrangements.

Drawings

FIG. 1 is a schematic sectional front view of a blade in a first state in accordance with an embodiment of the invention;

FIG. 2 is a schematic sectional front view of a blade in a second state according to an embodiment of the invention;

FIG. 3 is a schematic sectional front view of a blade in a third state according to an embodiment of the present invention;

FIG. 4 is a schematic sectional side view of the housing and the main wheel according to the embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

Reference numerals in the drawings of the specification include: the device comprises a shell 1, a cavity 2, a first liquid inlet 3, a second liquid inlet 4, a first liquid outlet 5, a second liquid outlet 6, a high-pressure pipe 7, a flow switch 8, a low-pressure pipe 9, a first contour 10, a second contour 11, a transition contour 12, a main wheel 13, a blade 14, a notch 15, a through hole 16, a main wheel shaft 17 and a bearing 18.