Hydraulic circulating pump stepless speed change device capable of changing pressure intensity
阅读说明：本技术 一种可改变压强的液压环流泵无级变速装置 (Hydraulic circulating pump stepless speed change device capable of changing pressure intensity ) 是由 田永胜 于 2020-08-08 设计创作，主要内容包括：一种可改变压强的液压环流泵无级变速装置,在缸体内部：由凸条柱体侧面与缸体的第一凹圆弧形缸体内壁构成一横截面为弧形纵截面为多边形的弧形容器,凸条柱体转动时凸条柱体侧面上的条状凸起使液体在弧形容器内环形流动,紧挨着凸条柱体的凹槽柱体阻挡液体在弧形容器内环形流动被迫从出液口流出,凹槽柱体侧面凹陷形成的条状凹槽使凸条柱体侧面上的条状凸起越过凹槽柱体,第一齿轮与第二齿轮啮合使凸条柱体与凹槽柱体同时相向转动使条状凹槽与条状凸起准时啮合,堵塞件阻挡液体从己方流出,堵塞件与凸条柱体配合,千斤顶使堵塞件与凸条柱体相对移动,改变弧状容器的纵向截面积,改变条状凸起受液体压力的面积,改变液体的静态压强及流量,也就改变了输出的力与速度,速度越小动力越大。(A hydraulic circulating pump stepless speed change device capable of changing pressure intensity is characterized in that: an arc container with a polygonal cross section and an arc longitudinal section is formed by the side surface of a raised line cylinder body and the inner wall of a first concave arc cylinder body of the cylinder body, when the raised line cylinder body rotates, a strip-shaped bulge on the side surface of the raised line cylinder body enables liquid to circularly flow in the arc container, a groove cylinder body next to the raised line cylinder body blocks the liquid from circularly flowing in the arc container and is forced to flow out of a liquid outlet, a strip-shaped groove formed by the side surface of the groove cylinder body in a concave mode enables the strip-shaped bulge on the side surface of the raised line cylinder body to cross over the groove cylinder body, a first gear is meshed with a second gear to enable the raised line cylinder body and the groove cylinder body to simultaneously rotate oppositely to enable the strip-shaped groove to be meshed with the strip-shaped bulge on time, a blocking piece blocks the liquid from flowing out of the same direction, the, the static pressure and flow of the liquid are changed, the output force and speed are changed, and the smaller the speed, the larger the power is.)
1. A hydraulic pump or motor comprising: the cylinder body, the convex strip body, the groove body, the first gear and the second gear;
the cylinder block includes: the liquid inlet, the liquid outlet, the inner wall of a first concave arc cylinder body with a concave arc-shaped section and the inner wall of a second concave arc cylinder body with a concave arc-shaped section;
the cylinder block includes therein: the convex strip body and the groove body;
the sand grip body comprises: the bottom surface, at least one convex strip body arc surface with an arc-shaped section and at least one bulge protruding out of the convex strip body arc surface;
the groove body includes: the bottom surface, at least one arc-shaped cylinder surface of the groove body with an arc-shaped section and at least one groove formed by the arc-shaped surface of the groove body in a concave mode;
the top end of the bulge is close to and inosculated with the inner wall of the first concave arc-shaped cylinder body;
the arc-shaped surface of the groove body is close to and matched with the inner wall of the second concave arc-shaped cylinder body;
the convex strip body is rotationally connected with the cylinder body;
the groove body is rotationally connected with the cylinder body;
the convex strip body is fixedly connected with the first gear, the groove body is fixedly connected with the second gear, and the first gear is meshed with the second gear;
the rotation centers of the two bottom surfaces of the convex strip body and the circle center of the arc line of the inner wall of the first concave arc-shaped cylinder body are in the same straight line;
the method is characterized in that: the groove body arc-shaped surface and the convex strip body arc-shaped surface are close to each other when the groove is not meshed with the protrusion, and the area of the convex strip body arc-shaped surface is larger than that of the convex strip body occupied by the protrusion.
2. A hydraulic pump or motor as claimed in claim 1, characterized in that: it still includes: a groove body B and a third gear;
the groove body B comprises: the bottom surface, at least one groove body B arc-shaped cylinder surface with an arc-shaped section and at least one groove formed by the recess of the groove body B arc-shaped surface;
the cylinder block further includes: the liquid inlet B, the liquid outlet B, a third concave arc-shaped cylinder body inner wall with a concave arc-shaped cross section, a fourth concave arc-shaped cylinder body inner wall with a concave arc-shaped cross section, a second concave arc-shaped cylinder body inner wall groove formed by the concave of the second concave arc-shaped cylinder body inner wall, and a fourth concave arc-shaped cylinder body inner wall groove formed by the concave of the fourth concave arc-shaped cylinder body inner wall;
the liquid outlet is communicated with the second concave arc-shaped cylinder inner wall groove, and the fourth concave arc-shaped cylinder inner wall groove is communicated with the liquid outlet B;
the groove body rotating center, the convex strip body rotating center and the groove body B rotating center are linearly arranged;
the arc-shaped surface of the groove body B and the arc-shaped surface of the convex strip body are close to each other when the groove of the groove body B is not meshed with the protrusion;
when the convex strip body rotates: at least one of the bulges is close to and inosculated with the inner wall of the first concave arc-shaped cylinder body, and at least one of the bulges is close to and inosculated with the inner wall of the third concave arc-shaped cylinder body;
the arc-shaped surface of the groove body B is close to and inosculated with the inner wall of the fourth concave arc-shaped cylinder body;
the third gear is connected with the groove body B;
the third gear is meshed with the first gear.
3. A variable displacement pump or a variable speed motor comprising the pump of claim 1: the cylinder body, the convex strip body, the groove body, the first gear and the second gear;
it still includes: the device comprises a shell, a plugging piece, a jack and a connecting piece;
the cylinder body is contained in the shell;
the cylinder block includes: the liquid inlet, the liquid outlet, the inner wall of a first concave arc cylinder body with a concave arc-shaped section and the inner wall of a second concave arc cylinder body with a concave arc-shaped section;
the cylinder block includes therein: the convex strip body and the groove body;
the sand grip body comprises: at least one protrusion protruding from the surface of the convex strip;
the groove body includes: at least one groove formed by the surface of the groove body in a concave mode;
the top end of the bulge is close to and matched with the inner wall of the first concave arc-shaped cylinder body;
the convex part of the groove body corresponding to the groove is close to and inosculated with the inner wall of the second concave arc cylinder body;
the plugging piece is rotationally connected with the connecting piece, and the groove body is rotationally connected with the connecting piece;
the jack acts on the plugging piece and the groove body;
the convex strip body, the first gear, the second gear and the groove body are in transmission connection;
the groove body is close to and matched with the convex strip body;
the method is characterized in that: the blocking piece is in sliding fit with the convex strip body and the inner wall of the first concave arc-shaped cylinder body.
4. A stepless speed change device composed of a variable pressure hydraulic device comprises: a variable pressure hydraulic device and a hydraulic transmission device;
the variable pressure hydraulic device comprises: a liquid inlet and a liquid outlet;
the hydraulic transmission device includes: a liquid inlet and a liquid outlet;
the liquid inlet of the variable pressure hydraulic device is connected with the liquid outlet of the hydraulic transmission device; the liquid outlet of the variable pressure hydraulic device is connected with the liquid inlet of the hydraulic transmission device;
the variable pressure hydraulic apparatus comprising the apparatus of claim 1: the cylinder body, the convex strip body, the groove body, the first gear and the second gear;
it also includes the features of claim 3: a housing, a plug, a jack;
the cylinder body is contained in the shell;
the cylinder block includes: the liquid inlet, the liquid outlet, a first concave arc-shaped cylinder inner wall with a concave arc-shaped section, a second concave arc-shaped cylinder inner wall with a concave arc-shaped section and a first circular cylinder inner wall with a circular section;
the cylinder block includes therein: the convex strip body and the groove body;
the sand grip body comprises: the bottom surface, at least one convex strip body arc surface with an arc-shaped section and at least one bulge protruding out of the convex strip body arc surface;
the groove body includes: the bottom surface, at least one arc-shaped surface of the groove body with the arc-shaped section and at least one groove body groove formed by the arc-shaped surface of the groove body in a concave mode;
the plug member includes: the section of the blocking part is an outer arc surface with a circular arc shape, the section of the blocking part is an inner arc surface with a concave arc shape, and no blocking part gap formed by a real object is formed between the outer arc surface and the inner arc surface;
the top end of the bulge is close to and matched with the inner wall of the first concave arc-shaped cylinder body;
the arc-shaped surface of the groove body is close to and matched with the inner wall of the second concave arc-shaped cylinder body and the inner wall of the circular cylinder body;
the plugging piece is rotationally connected with the connecting piece, and the groove body is rotationally connected with the connecting piece;
the jack is connected with the connecting piece;
the convex strip body, the first gear, the second gear and the groove body are in transmission connection;
the rotation centers of the two bottom surfaces of the convex strip body and the circle center of the arc line of the inner wall of the first concave arc-shaped cylinder body are in the same straight line;
the arc surface area of one convex strip body is larger than the surface area of the convex strip body occupied by one convex;
the arc-shaped surface of the groove body and the arc-shaped surface of the convex strip body are close to each other when the groove is not meshed with the bulge;
the method is characterized in that: the inner circular arc surface is attached to the circular arc surface of the convex strip body, the outer circular arc surface is attached to the inner wall of the first concave circular arc cylinder body, and the gap of the blocking piece is matched with the bulge of the convex strip body.
5. A continuously variable transmission comprising a variable displacement pump or variable speed motor as claimed in claim 3 or a variable pressure hydraulic device as claimed in claim 4, wherein: the groove body is fixedly connected with a second shaft, the sections of the groove body and the second shaft are polygonal hollow, a polygonal shaft with a polygonal section penetrates through the groove body to be hollow and matched with the polygon of the second shaft, and the second gear is fixedly connected with the polygonal shaft; the convex strip body is fixedly connected with a first shaft, and the first gear is fixedly connected with the first shaft; the first gear is meshed with the second gear; the first shaft is rotationally connected with the shell; the polygonal shaft is rotatably connected with the shell.
6. A continuously variable transmission comprising a variable displacement pump or variable speed motor as claimed in claim 3 or a variable pressure hydraulic device as claimed in claim 4, wherein: the second gear is fixedly connected with a second shaft, the blocking piece comprises a hollow shaft with a hollow section, the first gear is fixedly connected with the hollow shaft, and the first shaft penetrates through the hollow shaft and is rotatably connected with the shell; the first gear is engaged with the second gear.
7. A continuously variable transmission comprising a variable displacement pump or variable speed motor as claimed in claim 3 or a variable pressure hydraulic device as claimed in claim 4, wherein: the jack includes: the driving motor, the screw rod and the screw rod nut; the screw rod is matched and rotationally connected with the screw rod nut; the driving motor is connected with the screw rod; the screw rod nut is fixedly connected with the connecting piece.
8. A continuously variable transmission comprising a variable displacement pump or variable speed motor as claimed in claim 3 or a variable pressure hydraulic device as claimed in claim 4, wherein: the jack includes: the device comprises a closed shell, a first valve and a second valve, wherein the inner part of the shell is filled with liquid; the first valve is connected with the interior of the shell and the liquid inlet; the second valve connects the interior of the housing with the liquid outlet.
9. A continuously variable transmission comprising a variable displacement pump or variable speed motor as claimed in claim 3 or a variable pressure hydraulic device as claimed in claim 4, wherein: the jack includes: the piston rod is fixedly connected with the piston, the cylinder shell is fixedly connected with the cylinder body or the outer shell, and the piston rod is connected with the connecting piece; it still includes: one end of the first valve is connected with the liquid outlet, and the other end of the first valve is connected with the liquid outlet; one end of the second valve is connected with the liquid port, and the other end of the second valve is connected with the liquid inlet.
10. A continuously variable transmission comprising a variable displacement pump or variable speed motor as claimed in claim 3 or a variable pressure hydraulic device as claimed in claim 4, wherein: it still includes: the groove body B, the third gear, the plug A, the plug B, the first shaft, the second shaft and the third shaft;
the groove body B comprises: the bottom surface, at least one groove body B arc-shaped cylinder surface with an arc-shaped section and at least one groove formed by the recess of the groove body B arc-shaped surface;
the cylinder block further includes: the liquid inlet B, the liquid outlet B, a third concave arc-shaped cylinder body inner wall with a concave arc-shaped cross section, a fourth concave arc-shaped cylinder body inner wall with a concave arc-shaped cross section, a groove formed by the depression of the second concave arc-shaped cylinder body inner wall, a groove formed by the depression of the fourth concave arc-shaped cylinder body inner wall, a first circular cylinder body inner wall with a circular cross section and a second circular cylinder body inner wall with a circular cross section;
the liquid outlet is communicated with the groove on the inner wall of the second concave arc-shaped cylinder body, and the groove on the inner wall of the fourth concave arc-shaped cylinder body is communicated with the liquid outlet B;
the rotating center of the groove body, the rotating center of the convex strip body and the rotating center of the groove body B are in the same straight line;
the arc-shaped surface of the groove body and the arc-shaped surface of the convex strip body are close to each other when the groove of the groove body is not meshed with the protrusion;
the arc-shaped surface of the groove body B and the arc-shaped surface of the convex strip body are close to each other when the groove of the groove body B is not meshed with the protrusion;
when the convex strip body rotates: at least one of the bulges is close to and inosculated with the inner wall of the first concave arc-shaped cylinder body, and at least one of the bulges is close to and inosculated with the inner wall of the third concave arc-shaped cylinder body;
the arc-shaped surface of the groove body is close to and matched with the inner wall of the second concave arc-shaped cylinder body and the inner wall of the first circular cylinder body;
the arc-shaped surface of the groove body B is close to and matched with the inner wall of the fourth concave arc-shaped cylinder body and the inner wall of the second circular cylinder body;
the blocking part comprises a hollow shaft with a hollow section, the hollow shaft is rotationally connected with the connecting piece, the first gear is fixedly connected with the hollow shaft, and the first shaft penetrates through the hollow shaft and is rotationally connected with the shell;
the second shaft is fixedly connected with the groove body, the second shaft is rotatably connected with the connecting piece, and the second gear is fixedly connected with the second shaft;
the third shaft is fixedly connected with the groove body B, the third shaft is rotatably connected with the connecting piece, and the third gear is fixedly connected with the third shaft;
the second gear is meshed with the first gear, and the third gear is meshed with the first gear;
the plug A is fixedly connected with the connecting piece, and the plug B is fixedly connected with the connecting piece;
the plug A is in sliding fit with the groove in the inner wall of the second concave arc-shaped cylinder body, and the plug B is in sliding fit with the groove in the inner wall of the fourth concave arc-shaped cylinder body.
Technical Field
The invention belongs to the field of machinery, in particular to the aspects of stepless speed change, a hydraulic pump, a hydraulic motor and hydraulic transmission.
Background
The prior known stepless speed change device comprises friction type and hydraulic type, and the like, and the prior friction type stepless speed change device has the defects of large heat generation, poor reliability, incapability of transmitting larger power and the like due to friction transmission; the existing hydraulic stepless speed change device has low mechanical efficiency because the stress area of a plunger of a hydraulic pump is not changed, when the output power is larger, the friction is larger because of generating large pressure on an input end, and the friction is amplified by N times from a friction point to the force arm length of a power input shaft; the gear pump has low pressure resistance and low mechanical efficiency, friction exists between gears, heat is generated greatly, pulsation is caused by the change of gear meshing points, leakage is increased after the gears are abraded, the effective volume is small, the flow is small, and large power cannot be transmitted.
Disclosure of Invention
In order to overcome the defects of large vibration amplitude, large impact, large heat generation, poor reliability, incapability of transmitting large power, low mechanical efficiency and the like in the working process of the conventional continuously variable transmission, the invention provides the continuously variable transmission which has the advantages of higher reliability, capability of transmitting large power, no impact, small vibration, small output pulsation, rigid transmission and higher mechanical efficiency.
The method for solving the technical problem comprises the following steps: inside the cylinder: an arc container with a polygonal cross section and an arc longitudinal section is formed by the side surface of a raised line cylinder body and the inner wall of a first concave arc cylinder body of the cylinder body, when the raised line cylinder body rotates, a strip-shaped bulge on the side surface of the raised line cylinder body enables liquid to circularly flow in the arc container, a groove cylinder body next to the raised line cylinder body blocks the liquid from circularly flowing in the arc container and is forced to flow out of a liquid outlet, a strip-shaped groove formed by the side surface of the groove cylinder body in a concave mode enables the strip-shaped bulge on the side surface of the raised line cylinder body to cross over the groove cylinder body, a first gear is meshed with a second gear to enable the raised line cylinder body and the groove cylinder body to simultaneously rotate oppositely to enable the strip-shaped groove to be meshed with the strip-shaped bulge on time, a blocking piece blocks the liquid from flowing out of the same direction, the, the static pressure and flow of the liquid are changed, the output force and speed are changed, and the smaller the speed, the larger the power is.
The working principle is as follows: when the raised line cylinder is rotated by power, the first gear rotates, because the first gear is meshed with the second gear, the raised line cylinder and the groove cylinder synchronously rotate in opposite directions, liquid negative pressure enters the arc-shaped container from the liquid inlet and forms an arc-shaped liquid flow, when the liquid flow reaches the groove cylinder, the liquid flow is blocked by the groove cylinder and is forced to flow out from the liquid outlet under the pressure of the strip-shaped bulges, when the strip-shaped bulges reach the groove cylinder, the strip-shaped bulges cross the strip-shaped grooves of the groove cylinder, and the process is repeated to form a liquid flow with constant flow, when the output rotating speed needs to be changed, the jack moves the plugging piece and the groove cylinder, the area of the strip-shaped bulges subjected to the liquid pressure is changed, the liquid flow and the static pressure of the liquid are changed, the rotating speed and the torque of the hydraulic circulation motor are changed, namely the smaller the torque of the hydraulic circulation motor is larger, because the blocking piece can continuously move relative to the convex strip cylinder, stepless speed change is realized.
The invention has the beneficial effects that: the invention changes the output force and speed when changing the liquid pressure and is continuously adjustable, thereby realizing stepless speed change; because the change of speed and force of circular motion is between input and output, the stress area of the pressing component is changed during speed change, and the friction of the component for transmitting power is small, so that the mechanical efficiency is high, the output pulsation is small, no impact is generated, the vibration is small, the heat is small, and the noise is small; because the liquid is used as a force transmission medium, the liquid has extremely low compressibility and few movable elements, the reliability is high, and the rigid transmission is realized; the liquid is easy to control the flow rate and direction, so the transmission direction is any direction, the speed regulation range is wide, the speed range is wide, the cross section of the main part is arc-shaped and the geometric surface is few, so the convex strip cylinder and the concave groove cylinder can be made very long, the stress area of the strip-shaped bulge is large, the larger the stress area of the strip-shaped bulge is, the smaller the working pressure of the liquid is, and the special requirement on the element is not high, so the liquid can transmit larger power, the speed is high, the liquid flow is larger, and the liquid is easy to manufacture and detect.
The description of the figures in the drawings,
in the drawings of the specification, the reference number 2XX relates to a hydraulic circulation motor or a hydraulic circulation pump, and the reference number 1XX relates to a variable pressure strong hydraulic circulation pump or a variable pressure strong hydraulic circulation motor;
FIG. 1 is a schematic view showing a hydraulic circulation pump and a hydraulic circulation motor capable of changing pressure in a continuously variable transmission according to embodiment 1,
the hydraulic circulation motor comprises a
FIG. 2 is a schematic longitudinal sectional view of a hydraulic circulation pump capable of changing pressure in embodiment 1,
101, a
Figure 3 is a schematic cross-sectional view a-a of figure 2,
101, a
Figure 4 is a schematic cross-sectional view taken along line B-B of figure 2,
wherein, 101, a
Figure 5 is a schematic cross-sectional view of C-C in figure 2,
101-shell 108-second screw rod 111-cylinder 112-groove column 113-strip groove 114-polygonal shaft 125-first screw rod 126-strip protrusion 127-protruding strip column 130-first shaft 131-second concave circular arc cylinder inner wall 136-first concave circular arc cylinder inner wall
Figure 6 is a schematic cross-sectional view of a hydraulic circulation motor or pump,
202-cylinder 203-groove column 204-strip groove 207-second shaft 209-raised line column 210-strip protrusion 213-first shaft 214-pipeline 215-liquid outlet 216-second concave arc cylinder inner wall 217-liquid inlet 218-pipeline 219-first concave arc cylinder inner wall 220-arc container
Figure 7 is a schematic longitudinal section of a hydraulic circulation motor or pump according to embodiment 1,
wherein, 201-bearing 202-cylinder 203-grooved cylinder 204-bar groove 205-second gear 206-bearing 207-second shaft 208-bearing 209-raised bar cylinder 210-bar projection 211-first gear 212-bearing 213-first shaft
Figure 8 is a schematic cross-sectional view of a hydraulic pump or motor for improving radial force imbalance according to embodiment 3,
wherein 202-cylinder 203-grooved column 204-strip-shaped groove 207-second shaft 209-raised column 210-strip-shaped protrusion 213-first shaft 214-pipeline 215-liquid outlet 216-second concave arc cylinder inner wall 217-liquid inlet 219-first concave arc cylinder inner wall 221-second concave arc inner wall groove 222-third concave arc inner wall 223-liquid inlet second 224-strip-shaped groove second 225-third shaft 226-fourth concave arc inner wall groove 227-groove column 228-fourth concave arc inner wall 229-liquid outlet second 230-third gear
Figure 9 is a longitudinal section schematic view of a hydraulic pump or a hydraulic motor for improving radial force unbalance of embodiment 3,
201,
FIG. 10 is a schematic longitudinal sectional view of a variable pressure hydraulic pump or a variable pressure hydraulic motor according to embodiment 4 for improving radial force imbalance,
101, a
Figure 11 is a schematic cross-sectional view taken along line D-D of figure 10,
wherein 101-housing 110-second shaft 111-cylinder 112-groove column 113-strip groove 126-strip protrusion 127-protrusion column 130-first shaft 131-second concave arc cylinder inner wall 135-inlet 136-first concave arc cylinder inner wall 141-second concave arc cylinder inner wall groove 142-slide rail A145-third shaft 146-strip groove B147-groove column B149-slide rail B150-third concave arc cylinder inner wall 151-outlet B152-fourth concave arc cylinder inner wall groove 153-fourth concave arc cylinder inner wall 154-inlet B
Figure 12 is a schematic cross-sectional view taken along line E-E of figure 10,
101, a
Figure 13 is a schematic view showing the connection of embodiment 4 when the jack is a hydraulic jack,
26-second electromagnetic valve 27-first electromagnetic valve 111-cylinder body 120-connecting piece 134-pipeline 135-liquid outlet 154-liquid inlet B156-liquid port 157-piston 158-cylinder shell 159-piston rod
In an embodiment, the method comprises the following steps,
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