WO2007107082A1

WO2007107082A1 - Hydraulic pump

Info

Publication number: WO2007107082A1
Application number: PCT/CN2007/000797
Authority: WO
Inventors: Xiaoping Duan
Original assignee: Xiaoping Duan
Priority date: 2006-03-22
Filing date: 2007-03-13
Publication date: 2007-09-27
Also published as: CN101042150A; CN100482954C

Abstract

A hydraulic motor includes a rotary body comprised of a main casing and two end caps, an output shaft connected with said rotary body, a main shaft, a kneading wheel, an output shaft, a protective casing, an isolating limiter, etc. When high pressure liquid enters into the inlet hole, said liquid can flow to the groove on said kneading wheel through the inlet hole and the liquid blasting port on the main shaft, then flow to the space between the torus of the kneading wheel on the first side of the isolating limiter and the inner wall of the kneading chamber through the communicating hole on the kneading wheel. Said high pressure liquid impacts the inner wall of the kneading chamber, so as to synchronistically rotate the rotary body, the kneading wheel and the output shaft, however, the main shaft keeps fixed; after the pressure is released, the liquid flows to the liquid outlet chamber through the drainage groove of the kneading wheel on the second side of the isolating groove, and then flows out through the outlet port and liquid outlet hole of the main shaft.

Description

Hydraulic motor

Field of the Invention This invention relates to hydraulic motors and, more particularly, to a hydraulic motor that is highly efficient and can output higher rotational speeds at lower pressures. Background technique

In order to achieve energy transfer, it is usually necessary to use a high-pressure liquid to drive the object to rotate, which results in a hydraulic motor. The hydraulic motor of the prior art mainly has a vane motor and a plunger motor. Although they have a rotating structure, the variability mechanism moves in a straight line or in a straight line that is superimposed on the rotation. The principle of variability between the two is different. The blade motor divides the relatively eccentric cavity by means of a radially expanding blade in the rotor to cause periodic changes in the volume of the sector between the blades. The plunger motor uses the radial translation of the plunger in the rotating rotor to cause radial translation in the small cavity to cause volume change of the small cavity. The latter also requires a precise cylindrical or end flow structure to match jobs.

Although the two types of machines are simple in structure and have few inertial reaction forces, their blades and plungers have self-balancing and need to be balanced by external binding forces. The common feature of the mechanical friction of the two types of machinery is that the binding force for generating friction is maximized. Therefore, the ratio of internal mechanical losses of both machines is too high, and they are also strongly dependent on lubrication.

The second variation of the prior art, the rotational varactor mode, also has an efficiency bottleneck. The rotary transformation capacity can be subdivided into three categories: the helical motion mode, the gear meshing motion mode, and the eccentric wheel rotation mode. In general, the rotary varactor-type motion mechanism has a self-balancing force, which is beneficial to reduce the friction loss of the mechanism. However, another type of internal mechanical loss of rotational varactor motion has become a prominent problem, and in some cases, its volume loss may be too large.

In addition to the above efficiency bottlenecks, another problem with existing fluid machines is the unity of the target and product. Uniformity is not universal, a product can only be used for one purpose, and can only be used under one set condition.

1

Confirmation Summary of the invention

SUMMARY OF THE INVENTION The present invention is directed to solving the above-discussed deficiencies of the prior art and provides a hydraulic motor that is highly efficient and can output a higher rotational speed under a lower pressure liquid drive.

The technical solution adopted by the present invention to solve the technical problem is: constructing a hydraulic motor, comprising a rotating body, and an output shaft connected to the second end of the rotating body, further comprising a main shaft and a rolling wheel; wherein

The rotating body includes a main casing and an end cover, and a rotating cavity corresponding to the rolling wheel and having a diameter larger than a diameter of the rolling wheel is disposed in the rotating body, and the rotating wheel is installed in the cavity; a liquid returning chamber having a diameter smaller than the diameter of the wheel is provided on both sides;

An axial limiting groove is disposed on the annular surface of the wheel, and an inner limiting wall is disposed in the inner wall of the cavity, and the isolating limiting member is configured to block The wheel rotates and allows it to have an appropriate margin of activity;

The main shaft is inserted into the rotating body from the first end of the rotating body, and the position corresponding to the cavity on the main shaft is an eccentric structure; the wheel is loosely fitted to the eccentric position of the main shaft, and the main shaft is Rotating to generate the squeezing of the inner wall of the sputum cavity in sequence, so that the size of the gap between the rim of the rim and the inner wall of the sac is cyclically changed;

a radial annular groove is disposed at a center of the inner ring surface of the wheel, and a communication hole for communicating the groove with the outside is disposed on the first side of the limiting groove; The side of the wheel ring surface is provided with a shaft guiding liquid tank for connecting the liquid returning chambers on both sides thereof;

An axial liquid inlet hole and an axial liquid outlet hole communicating with the first end surface thereof are disposed in the main shaft, and the liquid inlet hole and the groove are connected at a position directly opposite to the groove of the wheel on the main shaft The liquid discharge port further has a liquid return port connecting the liquid outlet hole and the liquid returning chamber on the main shaft on both sides of the wheel.

In the hydraulic motor of the present invention, at least two reeling wheels may be disposed, and at this time, a number of cavities corresponding to the reeling wheel are provided in the rotating body; and for each of the reeling wheels, corresponding liquid return is provided on both sides thereof The cavity is provided with a corresponding set of limiting slots, grooves and liquid guiding grooves on the wheel, and a corresponding liquid discharging port and a liquid returning port are arranged on the main shaft.

Preferably, the hydraulic motor of the present invention further includes a protective casing, the first end of the protective casing being fixedly coupled to the main shaft, and the main casing and the end cap being fitted inside.

In the hydraulic motor of the present invention, for each of the wheels, three axial waists can be provided on the main shaft. a spray port, the three liquid discharge ports are arranged in parallel; and three axially-shaped liquid return ports may be arranged on the main shafts on both sides thereof, and the three liquid return ports are also parallel arrangement.

According to the above solution, in the present invention, when a high-pressure liquid is input from the liquid inlet hole, the high-pressure liquid can flow through the liquid inlet hole and the liquid discharge port to the groove of the wheel, and then flows to the isolation hole through the communication hole on the wheel. In the gap between the ring surface of the first side of the limiting member and the inner wall of the cavity, the high pressure liquid impacts the inner wall of the cavity, and can rotate the rotating body, the wheel and the output shaft synchronously, while the main shaft remains fixed; The liquid after releasing the pressure can enter the liquid returning chamber through the liquid guiding groove on the wheel on the second side of the isolation limiting groove, and then flows out through the liquid returning port and the liquid discharging hole on the main shaft. This type of hydraulic motor is characterized by energy conversion efficiency and can output a higher rotational speed under a lower pressure liquid drive, so it can be used as a hydraulic motor in which the wind power generation device and system of the application number 200510120802.7 is used. BRIEF DESCRIPTION OF THE DRAWINGS : '

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a front view of a hydraulic motor in a preferred embodiment of the present invention; and FIG. 2 is a cross-sectional view taken along line A-A of the hydraulic motor shown in FIG.

Figure 3 is a cross-sectional view taken along line B-B of the rotating body shown in Figure 2; ''

Figure 4 is a front elevational view of the spindle shown in Figure 1;

Figure 5 is a left side view of Figure 4; '

Figure 6 is a cross-sectional view taken along line D-D of Figure 4; 'Figure 7 is a cross-sectional view taken along line C-C of Figure 4;

Figure 8 is a front elevational view of the wheel shown in Figure 1;

Figure 9 is a cross-sectional view taken along line E-E of Figure 8;

Figure 10 is a cross-sectional view taken along line H-H of Figure 9;

Figure 11 is a cross-sectional view taken along line F-F of Figure 10;

Figure 12 is a cross-sectional view taken along line G-G of Figure 10;

Figure 13 is a bottom view of Figure 12;

14A to 14D are schematic diagrams showing the cooperation relationship between the boring wheel and the sacral cavity during the working process. detailed description

A preferred embodiment of the invention is illustrated in Figures 1 through 13. As can be seen from the figure, the main components of the hydraulic motor 200 include a main casing 201, an end cover 202, a main shaft 203, a weir 204, an output shaft 205, a protective casing 206, an isolating stopper 209, and the like. The main housing 201 and the left and right end covers 202 constitute a rotating body, and the output shaft 205 is connected to the right end cover to rotate synchronously with the rotating body.

As can be seen from Figures 1 and 3, two chambers 221 for mounting the wheel are symmetrically disposed within the rotating body. As shown in Fig. 2, the diameter of the cavity is slightly larger than the diameter of the wheel, so that when the wheel is installed in the cavity, there is an appropriate margin of active clearance. As can be seen from Fig. 1 and Fig. 3, on both sides of the cavity 221, there are respectively provided a liquid returning chamber 222 having a diameter smaller than the diameter of the weir wheel. In this embodiment, there are three liquid returning chambers of the left, middle and right sides.

The structure of the boring wheel 204 used in this embodiment is as shown in FIG. 8 to FIG. 13 , wherein the central protruding portion of the boring wheel is a main body for engaging the inner wall of the sacral cavity, and the retaining edges on both sides are used for the end cover. Cooperate. An axial limiting groove 215 is disposed on the annular surface of the boring wheel. Correspondingly, an inner limiting member 209 is disposed on the inner wall of the boring cavity, and the protruding limiting member 209 extends into the limiting groove for defining the boring wheel so as not to rotate. And allowing the wheel to have an appropriate margin of motion, as shown in Figure 2, the isolating stop slot 29 is also used to isolate the gap between the wheel and the inner wall of the cavity. In addition, a radial annular groove 219 is disposed in the center of the inner ring surface of the wheel, and a communication hole 216 is formed on the right side of the limiting groove 215 to communicate the groove 219 with the outside. The size of the communication hole is from the inside to the outside. Gradually becoming larger, reaching the entire torus width when reaching the wheel ring surface; in addition, a shaft guiding liquid groove 214 is provided on the left side of the ring groove 215 on the left side of the limiting groove 215, 'When the wheel is as shown in FIG. When assembled, the liquid guiding groove can connect the liquid returning chamber 222 on the left and right sides of the wheel.

The structure of the main shaft 203 used in this embodiment is as shown in FIG. 4 to FIG. 7. The main shaft is inserted into the rotating body from the left end of the rotating body, and the position corresponding to the cavity on the main shaft is an eccentric structure; The eccentric position of the main shaft is loosely fitted, and the swaying of the inner wall of the boring chamber is sequentially performed as the main shaft rotates, so that the size of the gap between the rim surface of the boring wheel and the inner wall of the boring chamber can be cyclically changed. As can be seen from the figure, an axial inlet hole 207 and an axial liquid outlet hole 208 communicating with the left end surface thereof are provided in the main shaft 204, and three waists are provided on the main shaft at a position facing the groove 217 of the wheel. Shaped liquid discharge ports 210, which can connect the liquid inlet holes 207 in the main shaft with the grooves 217 on the wheel; on the main shafts on both sides of the wheel, there are three waist-shaped liquid return ports 211, which can be The liquid outlet in the main shaft communicates with the liquid return chamber in the rotating body.

In this embodiment, when a high pressure liquid is input from the liquid inlet hole 207 of the main shaft, the high pressure liquid can be advanced. The liquid hole 207 and the liquid discharge port 210 flow into the groove 217 of the boring wheel 204, and then flow through the communication hole 216 on the boring wheel to between the rim ring surface on the right side of the isolation stopper 209 and the inner wall of the boring chamber. In the gap, the high-pressure liquid will impact the inner wall of the cavity, thereby driving the rotating body, the wheel, and the output shaft to rotate synchronously, while the spindle 203 remains stationary. The liquid after the release of the pressure can enter the liquid returning chamber 222 through the liquid guiding groove 214 on the wheel of the left side of the isolation limiting groove, and then flows out through the liquid returning port 211 and the liquid discharging hole 208 on the main shaft.

The working principle of the hydraulic motor is as shown in Figs. 14A to 14D, in which, when a high-pressure liquid is input, the rotating body can be driven to rotate counterclockwise, resulting in a turbulent effect in the order shown in Figs. 14A, 14B, 14C, and 14D. , among them,

(1) From Fig. 14A to Fig. 14B, the high-pressure liquid enters the groove 217 of the wheel from the liquid discharge port 210 on the main shaft, and flows to the right side of the isolation stopper 209 via the communication hole 216 on the wheel. In the gap between the ring surface of the wheel and the inner wall of the cavity, under the action of the high-pressure liquid, the wheel rotates counterclockwise, so that the gap on the right side of the isolation limiting member gradually increases; and the gap on the left side gradually decreases. Thereby the previously input liquid can be output.

(2) From Fig. 14B to Fig. 14C, under the push of the liquid, the right side gap is gradually transferred to the upper portion; at the same time, the gap on the left side is further reduced until the liquid outlet is completely blocked.

(3) From Fig. 14C to Fig. 14D, the gap on the right side gradually increases from zero, and the liquid enters twice; at the same time, the liquid in the upper side gap is pressed to the left side gap and output.

(4) From Fig. 14D to Fig. 14A, the action of the liquid causes the gap on the right side to further increase; while the gap on the left side is further reduced, thereby further pressurizing the liquid.

Each of the above four states is repeated once, and the rotating body is rotated once. It can be seen that, by this structure, the liquid input from the liquid inlet hole can drive the rotating body to adjust the rotation, and the motor is characterized by a liquid at a lower pressure. The drive outputs a higher speed, so it can be used in the wind power generator and system of the application number 200510120802.7 as the hydraulic motor.

In a specific implementation, the structures of the main casing 201, the end cover 202, the main shaft 203, the boring wheel 204, the output shaft 205, the protective casing 206, the isolation limiting member 209, and the like may be appropriately changed as needed. In addition, in the same main casing, only one set of the above-mentioned structure of the crucible twisting wheel may be provided, or three or more sets of the above-mentioned structure of the crucible chamber twisting wheel may be provided, when two or more sets are provided, for each The wheel has a corresponding liquid returning chamber on both sides thereof, and a corresponding set of limiting groove, groove and liquid guiding groove is arranged on the wheel, in the spindle There is a corresponding liquid discharge port and a liquid return port.

Claims

Rights request

A hydraulic motor comprising a rotating body and an output shaft coupled to the second end of the rotating body, characterized in that it further comprises a main shaft and a rolling wheel;

The main shaft is inserted into the rotating body from the first end of the rotating body, and the position corresponding to the cavity on the main shaft is an eccentric structure; the wheel is loosely fitted to the eccentric position of the main shaft, and can be matched with the main shaft Rotating to generate the squeezing of the inner wall of the sputum cavity in sequence, so that the size of the gap between the rim of the rim and the inner wall of the raft cavity is cyclically changed;

An axial 'inlet hole and an axial liquid outlet hole communicating with the first end surface thereof are disposed in the main shaft, and the liquid inlet hole and the groove are provided at a position directly opposite to the groove of the wheel on the main shaft The connected liquid discharge port further has a liquid port connecting the liquid outlet hole and the liquid returning chamber on the main shaft on both sides of the wheel.

2. The hydraulic motor according to claim 1, wherein at least two weirs are included, and a number of weirs corresponding to the weir wheel are provided in the rotating body; A corresponding liquid returning chamber is provided, and a corresponding limiting groove, a groove and a liquid guiding groove are arranged on the wheel, and a corresponding liquid discharging port and a liquid returning port are arranged on the main shaft.

3. The hydraulic motor according to claim 2, further comprising a protective casing, the first end of the protective casing being fixedly coupled to the main shaft, and the main casing and the end cap being fitted therein Ministry.

4. The hydraulic motor according to claim 2, wherein for each of the wheels, three axially-shaped spray ports are provided on the main shaft, and the three liquid discharge ports are arranged in parallel. .

5. The hydraulic motor according to claim 4, wherein for each of the wheels, three axially-shaped liquid return ports are provided on the main shafts on both sides thereof, and between the three liquid return ports Arranged in parallel.