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 2019-11-26 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,在缸体中：由第一圆柱体柱面与缸体内壁的第一弧形面构成弧形容器,第一圆柱体柱面包括条状凸起,而紧挨着第一圆柱体的第二圆柱体阻止液体在第一圆柱体柱面上的条状凸起的压力下环形流动被迫从出液口流出,第二圆柱体柱面上的条状凹槽提供了第一圆柱体柱面上的条状凸起越过第二圆柱体的保障,第一齿轮与第二齿轮啮合使第一圆柱体与第二圆柱体同步相向转动使条状凹槽与条状凸起啮合,千斤顶使第一堵头顺着第一圆柱体移动,改变弧形容器的截面积,改变了液体的压强及流量,也就改变了输出的力与速度,速度越小动力越大,第二堵头让液体只从出液口流出；输入与输出之间是圆周运动的速度与力的变化、无动能与势能之间的转换、传动方向无限制、无级变速。(A hydraulic circulating pump stepless speed change device capable of changing pressure intensity is provided, wherein in a cylinder body: the arc container is formed by a first cylindrical surface and a first arc-shaped surface of the inner wall of the cylinder body, the first cylindrical surface comprises a strip-shaped bulge, a second cylinder close to the first cylinder prevents liquid from circularly flowing under the pressure of the strip-shaped bulge on the first cylindrical surface and is forced to flow out of the liquid outlet, a strip-shaped groove on the second cylindrical surface provides guarantee that the strip-shaped bulge on the first cylindrical surface passes through the second cylinder, the first gear is meshed with the second gear to enable the first cylinder and the second cylinder to synchronously rotate oppositely to enable the strip-shaped groove to be meshed with the strip-shaped bulge, the first plug is moved along the first cylinder by the jack, the sectional area of the arc container is changed, the pressure and the flow of the liquid are changed, the output force and the output speed are also changed, the smaller the speed is, the larger the power is, and the liquid only flows out of; the input and output are the change of speed and force of circular motion, the conversion between kinetic energy and potential energy, the unlimited transmission direction and the stepless speed change.)

1. A hydraulic circulating pump stepless speed change device capable of changing pressure intensity comprises: the liquid outlet of the hydraulic circulation pump with changeable pressure intensity is connected with a high pressure resistant pipeline, a safety valve and a variable flow direction valve, the variable flow direction valve is connected with a liquid inlet and a liquid outlet of the hydraulic circulation motor through the high pressure resistant pipeline, the variable flow direction valve can make the liquid inlet and the liquid outlet of the hydraulic circulation motor mutually converted, a liquid inlet of the hydraulic circulation pump with changeable pressure intensity is connected with a liquid container through a pipeline respectively with the liquid outlet of the variable flow direction valve and the liquid outlet of the safety valve, and the hydraulic circulation pump with changeable pressure intensity comprises: the cylinder comprises a first cylinder body, a second cylinder body, a first gear, a second gear and a cylinder body, wherein a first cylinder body shaft is fixed on the centers of two ends of the first cylinder body; the hydraulic circulation pump capable of changing the pressure intensity can be used as a hydraulic circulation motor, and is characterized in that: the cylinder body comprises a first arc-shaped surface and a first cylinder, the cylindrical surface of the first cylinder comprises strip-shaped bulges, the circle center of the first cylinder is the same as that of the first arc-shaped surface, and the area of the cylindrical surface between the adjacent strip-shaped bulges on the cylindrical surface of the first cylinder is larger than that of the cylindrical surface of the first cylinder occupied by the strip-shaped bulges.

2. A variable speed hydraulic pressure pump according to claim 1, wherein: the first cylindrical surface, the first arc-shaped surface and the inner wall of the cylinder body form an arc-shaped container.

3. A variable speed hydraulic pressure pump according to claim 1, wherein: when the first cylinder rotates, the other side of at least one strip-shaped bulge, which is opposite to the cylindrical surface of the first cylinder, is precisely attached to the first arc-shaped surface.

4. The variable speed device of a hydraulic circulation pump capable of changing pressure according to claim 1 and 2, wherein: when the first cylinder rotates, the volume of the arc-shaped container between the liquid inlet and the liquid outlet is changed by the strip-shaped protrusions.

5. A variable speed hydraulic pressure pump according to claim 1, wherein: still include second cylinder, second arcwall face in the cylinder body, include the strip recess on the second cylinder, the cylinder of first cylinder is close to with the cylinder of second cylinder, and the another side and the second arcwall face of second cylinder for first cylinder are laminated with the precision.

6. A variable speed hydraulic pressure pump according to claim 1, wherein: the first plug is precisely attached to the first arc-shaped surface, the cylindrical surface of the first cylinder and the strip-shaped bulges on the cylindrical surface of the first cylinder, and the sectional area of the arc-shaped container is changed when the first plug moves along the first cylinder.

7. The variable speed device of hydraulic circulation pump capable of changing pressure according to claim 1 and 6, wherein: it still includes the jack, and the jack is connected with first end cap.

8. A variable speed hydraulic pressure pump according to claim 1, wherein: the first cylinder is a frustum cone.

9. The variable speed device of hydraulic circulation pump capable of changing pressure according to claim 1 and 5, wherein: when the strip-shaped protrusion is N times of the strip-shaped groove, the diameter of the first cylinder is N times of that of the second cylinder, and the number of the first gear teeth is N times of that of the second gear teeth.

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

At present, the known stepless speed change device has friction type, hydraulic type and the like, and the existing 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 prior hydraulic stepless speed change device has low efficiency because the flow of liquid is simply changed and the pressure intensity is not changed, and the prior hydraulic stepless speed change device converts circular motion into reciprocating linear motion and then converts the reciprocating linear motion into the circular motion to generate pulsation and impact, which is also an important reason for causing the low efficiency.

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 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 high efficiency.

The method for solving the technical problem comprises the following steps: in the cylinder body: the arc container is formed by a first arc-shaped surface of a cylindrical surface of a first cylinder and an inner wall of a cylinder body, a second cylinder close to the first cylinder prevents liquid from flowing annularly under the pressure of a strip-shaped bulge on the cylindrical surface of the first cylinder and is forced to flow out of a liquid outlet, a strip-shaped groove on the cylindrical surface of the second cylinder provides guarantee that the strip-shaped bulge on the cylindrical surface of the first cylinder passes through the second cylinder, a first gear is meshed with a second gear to enable the first cylinder and the second cylinder to synchronously rotate oppositely to enable the strip-shaped groove to be meshed with the strip-shaped bulge, a jack enables a first plug to move along the first cylinder, the sectional area of the arc container is changed, the pressure and the flow of the liquid are changed, the output force and speed are also changed, the smaller the speed is, the larger the power is, and the: the cylinder body comprises a first arc-shaped surface and a first cylinder, the cylindrical surface of the first cylinder comprises strip-shaped bulges, the circle centers of the first cylinder and the first arc-shaped surface are the same, the cylindrical surface area between the adjacent strip-shaped bulges on the cylindrical surface of the first cylinder is larger than the cylindrical surface area of the first cylinder occupied by the strip-shaped bulges, the cylindrical surface of the first cylinder, the first arc-shaped surface and the inner wall form an arc-shaped container, when the first cylinder rotates, the other side of at least one strip-shaped bulge relative to the cylindrical surface of the first cylinder is precisely attached to the first arc-shaped surface, when the first cylinder rotates, the volume of the arc-shaped container between the strip-shaped protrusion and the liquid inlet and the liquid outlet is changed, still include second cylinder, second arcwall face in the cylinder body, include the strip recess on the second cylinder, the cylinder of first cylinder is close to with the cylinder of second cylinder, and the another side and the second arcwall face of second cylinder for first cylinder are laminated with the precision. The lifting device further comprises a first plug, the first plug is precisely attached to the first arc-shaped surface, the cylindrical surface of the first cylinder and the strip-shaped protrusions on the cylindrical surface of the first cylinder, the lifting jack is connected with the first plug, the sectional area of the arc-shaped container is changed when the first plug moves along the first cylinder, when the cylinder is a truncated cone, the strip-shaped protrusions are N times of the strip-shaped grooves, the diameter of the first cylinder is N times of that of the second cylinder, and the number of the first gear teeth is N times of that of the second gear teeth.

The working principle is as follows: when the pressure of the liquid needs to be changed, the jack moves the first plug, the second plug and the second cylinder to change the sectional area of the arc container and the stressed area of the strip-shaped bulges, and also change the liquid flow and the pressure intensity on the hydraulic circulation motor, thereby changing the rotating speed and the torque of the hydraulic circulation motor, namely the smaller the rotating speed of the hydraulic circulation motor, the larger the torque, because the first choke plug can move continuously, 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 speed and force of circular motion are changed between input and output, no kinetic energy and potential energy are converted, and the rigid sliding friction of a part for transmitting power is small, the liquid has high flow speed, high efficiency, small output pulsation, no impact, small vibration and small heat generation; because the liquid is used as a force transmission medium and the compressibility of the liquid is extremely low, the reliability is high, and the high power and rigid transmission can be transmitted; the liquid is easy to control the flow rate and the flow direction, so that the transmission direction is any direction, the speed regulation range is wide, the speed range is wide, an additional reversing mechanism and an additional clutch mechanism are not needed when the cylinder is used for walking machinery, and the liquid flow is large because the volume of an arc container formed by the cylindrical surface of the first cylinder and the first arc-shaped surface of the inner wall of the cylinder body is large.

The description of the figures in the drawings,

in the attached drawings of the specification, the number 2XX relates to a hydraulic circulation motor, and the rest relates to a hydraulic circulation pump capable of changing pressure intensity;

figure 1 is a schematic diagram of a hydraulic circulation pump and a hydraulic circulation motor capable of changing pressure,

the hydraulic circulation motor comprises a housing 7, a second plug 8, a second screw rod 11, a cylinder 12, a second cylinder 13, a strip-shaped groove 14, a second shaft 20, a plug connecting plate 23, a first plug 25, a first screw rod 26, a strip-shaped protrusion 27, a first cylinder 30, a first shaft 31, a second arc-shaped surface 32, a liquid inlet 33, a liquid inlet pipeline 34, a high-pressure-resistant pipeline 35, a liquid outlet 36, a first arc-shaped surface 202, a hydraulic circulation motor cylinder 203, a fourth cylinder 204, a strip-shaped groove 207, a fourth shaft 209, a third cylinder 210, a strip-shaped protrusion 213, a third shaft 214, a high-pressure-resistant pipeline 215, a liquid inlet 216, a fourth arc-shaped surface 217, a liquid outlet 218, a high-pressure-resistant pipeline 219, a third arc-shaped surface 220, an arc-shaped container 221, a safety valve 222, a safety valve liquid outlet 223, a.

Figure 2 is a schematic longitudinal section of a variable pressure hydraulic circulation pump,

wherein, 1-housing 2-second gear 3-fourth gear 4-sixth gear 5-bearing 6-second screw rod sleeve 7-second end cap 8-second screw rod 10-auxiliary shaft 11-cylinder 12-second cylinder 13-strip groove 14-second shaft 15-first gear 16-third gear 17-fifth gear 18-hollow shaft 19-bearing 20-end cap connecting plate 21-magnet 22-first screw rod sleeve 23-first end cap 24-Hall sensor 25-first screw rod 26-strip bulge 27-first cylinder 28-driving motor 29-cylinder 30-first shaft 30

Figure 3 is a schematic cross-sectional view a-a of figure 2,

wherein, 1-the shell 7-the second plug 8-the second screw rod 10-the auxiliary shaft 14-the second shaft 23-the first plug 25-the first screw rod 26-the strip-shaped bulge 27-the first cylinder 30-the first shaft

Figure 4 is a schematic cross-sectional view taken along line B-B of figure 2,

wherein, 1-housing 8-second lead screw 10-auxiliary shaft 12-second cylinder 13-strip groove 14-second shaft 25-first lead screw 26-strip projection 27-first cylinder 30-first shaft 31-second arc surface 32-liquid inlet 33-liquid inlet pipe 34-high pressure resistant pipe 35-liquid outlet 36-first arc surface 37-arc container

Figure 5 is a schematic longitudinal section of a hydraulic circulation motor,

201-bearing 202-hydraulic circulation motor cylinder 203-fourth cylinder 204-strip groove 205-eighth gear 206-bearing 207-fourth shaft 208-bearing 209-third cylinder 210-strip protrusion 211-seventh gear 212-bearing 213-third shaft

Figure 6 is a schematic cross-sectional view of a hydraulic circulation motor,

202-hydraulic circulation motor cylinder 203-fourth cylinder 204-strip-shaped groove 207-fourth shaft 209-third cylinder 210-strip-shaped protrusion 213-third shaft 214-high pressure resistant pipeline 215-liquid inlet 216-fourth arc-shaped surface 217-liquid outlet 218-high pressure resistant pipeline 219-third arc-shaped surface 220-arc-shaped container.

In an embodiment, the method comprises the following steps,