A hydraulic power speed increaser

Abstract

The present invention discloses a hydraulic power speed increaser, which comprises a speed increasing box, a planetary gear set, an impeller and a rotating shaft. The speed increasing box includes an upper shell and a lower shell, and a set of hydraulic push rods with opposite pushing directions are arranged on the upper shell and the lower shell; an annular groove is provided on each of the upper shell and the lower shell, and an annular impeller is embedded in each annular groove. Each hydraulic push rod pushes an impeller to rotate in the same direction; the impeller is provided with external teeth and internal teeth; the external teeth are meshed with the hydraulic push rod through a rack; the internal teeth are meshed with the planetary gear set, and the planetary gear set drives the rotating shaft to rotate at a variable speed. The bearings of the rotating shaft are arranged on the upper shell and the lower shell. The present invention mainly relies on the oil cylinder hydraulic system as the main power to push the high-precision rack to perform a repeated cyclic motion in the clockwise direction. The external teeth of the impeller are pushed by the rack, and at the same time, the internal teeth drive the planetary gear set to increase the gear ratio. Because of the energy conversion of the hydraulic cylinder, it has the advantages of large driving torque force, small overall machine power and high rated pressure, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of speed increasers, and particularly to a hydraulic power speed increaser. Background Art

[0002] A speed increaser is an important component of a series of complete equipment such as wind power generation, aircraft, and hydraulic high-pressure piston pumps. However, currently, speed increasers at home and abroad all use motor structures, with a small speed ratio, resulting in the driving torque not meeting the requirements. Summary of the Invention

[0003] To solve the above problems, the purpose of the present invention is to provide a hydraulic power speed increaser that is hydraulically driven and uses a planetary gear set for gear ratio speed increase.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A hydraulic power speed increaser includes a speed increasing box, a planetary gear set, an impeller, and a rotating shaft. The speed increasing box includes an upper shell and a lower shell. The upper shell and the lower shell are provided with a set of hydraulic push rods with opposite pushing directions; each of the upper shell and the lower shell is provided with an annular groove, and each annular groove is embedded with an annular impeller. Each hydraulic push rod pushes one of the impellers to rotate in the same direction; the impeller is provided with external teeth and internal teeth; the external teeth are meshed and connected to the hydraulic push rod through a rack; the internal teeth are meshed with the planetary gear set, and the planetary gear set drives the rotating shaft to rotate at a variable speed. The bearing of the rotating shaft is arranged on the upper shell and the lower shell.

[0006] Further, there are two upper and lower grooves between the external teeth and the internal teeth of each impeller. The annular groove is embedded in one of the grooves opposite to it. The groove separates the internal teeth and the external teeth, and the groove is provided with a plurality of anti-backlash holes; a flywheel is embedded in the grooves of the two impellers facing each other. The flywheel is provided with an anti-backlash member, and the anti-backlash member is touchably connected to the anti-backlash holes.

[0007] Further, the upper shell and the lower shell are each provided with a plurality of sub-bearings, and the sub-bearings are arranged on the surface of the annular groove.

[0008] Further, one end of the anti-backlash member is a slope, and the slope is arranged opposite to the rotation direction of the impeller.

[0009] Further, the planetary gear set is composed of a plurality of external gears and a central gear. The external gears are sequentially meshed around the central gear, and the internal teeth of the impeller are meshed with the outer teeth of the external gears. The rotating shaft passes through the center of the central gear.

[0010] Further, a plurality of fixed shafts are vertically provided on the upper shell and the lower shell, and the center of the external gear is sleeved on one of the fixed shafts.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The present invention discloses a hydraulic power speed increaser, which mainly relies on an oil cylinder power system as the main power to push a high-precision rack to perform a repeated cyclic motion in the clockwise direction. The hydraulic push rod drives the rack to push the impeller with internal and external teeth, and at the same time, the internal teeth of the impeller drive the planetary gear set to increase the gear ratio. Because of the energy conversion of the hydraulic cylinder, it has the advantages of large driving torque force, small overall power, high rated pressure, compact structure, high efficiency, and convenient speed (rotation speed) adjustment. The present invention can be widely applied to occasions that need to be adjusted, such as high-pressure piston pumps, wind power generation, aircraft, large transportation tools, and military industries. It has application scenarios such as being used as a process pump in the petroleum, chemical, and fertilizer industries, high-pressure descaling in metallurgy and rolling mills, descaling in industries such as construction, chemical industry, shipbuilding, and papermaking, and high-pressure long-distance fire fighting by fire trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present invention;

[0014] Figure 2 is an exploded view of the present invention;

[0015] Figure 3 is an exploded view of the impeller structure of the present invention.

[0016] In the figure: 10, upper shell; 11, first hydraulic push rod; 20, lower shell; 21, second hydraulic push rod; 22, annular groove; 30, impeller; 31, external tooth teeth; 32, internal tooth teeth; 33, groove; 40, flywheel; 41, anti-return member; 50, external gear; 51, central gear; 52, fixed shaft; 60, rotating shaft; 61, bearing; 210, rack; 220, sub-bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0018] Such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, the present invention discloses a hydraulic power speed increaser, which includes a speed increasing box, a planetary gear set, an impeller 30 and a rotating shaft 60. Among them, the speed increasing box includes an upper shell 10 and a lower shell 20, and the edges of the upper shell 10 and the lower shell 20 are joined together to form the box body of the speed increasing box. The upper shell 10 and the lower shell 20 are provided with a group of hydraulic push rods, namely a first hydraulic push rod 11 and a second hydraulic push rod 21 respectively, and the pushing directions of the two push rods are arranged oppositely. A ring groove 22 is provided on the bottom surface of each of the upper shell 10 and the lower shell 20, and a ring-shaped impeller 30 is embedded in each ring groove 22. A rack 210 driven by a hydraulic push rod is arranged on one side of each impeller 30. Both impellers 30 are provided with external teeth 31 and internal teeth 32. The first hydraulic push rod 11 meshes with the external teeth 31 of the impeller 30 through the rack 210 to push the impeller 30 arranged on the upper shell 10, and the second hydraulic push rod 21 meshes with the external teeth 31 of the impeller 30 through the rack 210 to push the impeller 30 arranged on the lower shell 20.

[0019] In the present invention, the planetary gear set is composed of six external gears 50 and a central gear 51. The external gears 50 are sequentially meshed around the central gear 51. Six fixed shafts 52 are vertically arranged on the upper shell 10 and the lower shell 20, and the center of the external gear 50 is sleeved on a fixed shaft 52. Moreover, the internal teeth 32 of the impeller 30 mesh with the external teeth on the outer side of the external gear 50. The rotating shaft 60 passes through the center of the central gear 51, and the bearing 61 of the rotating shaft 60 is arranged on the upper shell 10 and the lower shell 20. When the present invention operates, the two hydraulic push rods push the two impellers 30 to rotate in the same direction. When rotating, the internal teeth 32 of the impeller 30 drive the external gear 50 to rotate. Driven by a plurality of external gears 50, the central gear 51 accelerates the rotation speed of the rotating shaft 60 through the gear ratio.

[0020] When the rotating shaft 60 needs to rotate in one direction, a reverse prevention function needs to be realized inside the impeller 30. To achieve this function, two upper and lower grooves 33 are provided between the external teeth 31 and the internal teeth 32 of each impeller 30, and the ring groove 22 is embedded in one of the grooves 33 opposite thereto. The groove 33 separates the external teeth 31 and the internal teeth 32 and is provided with a plurality of reverse prevention holes. A flywheel 40 is embedded in the opposite grooves 33 of the two impellers 30. The flywheel 40 is provided with a reverse prevention member 41, and the reverse prevention member 41 can be touch-connected with the reverse prevention holes. One end of the reverse prevention member 41 is a slope, and the slope is arranged opposite to the rotation direction of the impeller 30. Six sub-bearings 220 are provided on each of the upper shell 10 and the lower shell 20, and the sub-bearings 220 are arranged on the surface of the ring groove 22. The flywheel 40 rotates together with the impeller 30 through the sub-bearings 220. When the present invention operates, when the impeller 30 rotates, the reverse prevention hole pushes up the reverse prevention member 41 from the slope, enabling the impeller 30 to rotate smoothly. When the hydraulic push rod retracts, the reverse prevention hole abuts against the flat side of the reverse prevention member 41, causing the rack 210 to only drive the external teeth 31 of the impeller 30 to retract, and the internal teeth 32 are not affected by the retraction, ensuring that the rotation direction of the rotating shaft 60 remains consistent.

[0021] The above embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A hydraulic power speed increaser, characterized in that: It includes a speed increasing box, a planetary gear set, an impeller and a rotating shaft. The speed increasing box includes an upper shell and a lower shell, and a set of hydraulic push rods with opposite pushing directions are provided on the upper shell and the lower shell. An annular groove is provided on each of the upper shell and the lower shell, and an annular impeller is embedded in each annular groove. Each hydraulic push rod pushes one impeller to rotate in the same direction. The impeller is provided with external teeth and internal teeth. The external teeth are meshed and connected with the hydraulic push rod through a rack. The internal teeth are meshed with the planetary gear set, and the planetary gear set drives the rotating shaft to rotate at a variable speed. The bearing of the rotating shaft is arranged on the upper shell and the lower shell. A rack driven by a hydraulic push rod is arranged on one side of each impeller. Both impellers are provided with external teeth and internal teeth. The first hydraulic push rod is meshed with the external teeth of the impeller through the rack to push the impeller arranged on the upper shell, and the second hydraulic push rod is meshed with the external teeth of the impeller through the rack to push the impeller arranged on the lower shell. The two hydraulic push rods push the two impellers to rotate in the same direction. When rotating, the internal teeth of the impeller drive the external gear to rotate. Driven by a plurality of external gears, the central gear accelerates the rotation speed of the rotating shaft through a gear ratio. Two grooves are provided between the external teeth and the internal teeth of each impeller. The annular groove is embedded in one of the grooves opposite to it. The groove separates the internal teeth and the external teeth, and a plurality of anti-backlash holes are provided in the groove. A flywheel is embedded in the grooves opposite to each other of the two impellers. The flywheel is provided with an anti-backlash part, and the anti-backlash part is touch-connectable with the anti-backlash hole. A plurality of sub-bearings are provided on each of the upper shell and the lower shell, and the sub-bearings are arranged on the surface of the annular groove. One end of the anti-backlash part is a slope, and the slope is arranged opposite to the rotation direction of the impeller. The hydraulic power speed increasing machine relies on the oil cylinder power system as the power to push the rack to perform a repeated cyclic action in the clockwise direction. The hydraulic push rod drives the rack to push the impeller with internal and external teeth, and at the same time, the internal teeth of the impeller drive the planetary gear set to perform gear ratio speed increase.

2. The hydraulic power speed increaser according to claim 1, characterized in that: The planetary gear set is composed of a plurality of external gears and a central gear. The external gears are sequentially meshed around the central gear, and the internal teeth of the impeller are meshed with the external teeth on the outer side of the external gear. The rotating shaft passes through the center of the central gear.

3. The hydraulic power speed increaser according to claim 2, characterized in that: A plurality of fixed shafts are vertically arranged on the upper shell and the lower shell, and the center of the external gear passes through one of the fixed shafts.

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