CN2700597Y

CN2700597Y - Cam planet gear motor

Info

Publication number: CN2700597Y
Application number: CN 200420059780
Authority: CN
Inventors: 张立刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-21
Filing date: 2004-05-21
Publication date: 2005-05-18
Anticipated expiration: 2014-05-21

Abstract

The utility model discloses a cam planet gear motor, comprising a seal cavity and an output shaft. The seal cavity comprises an external tooth ring, a center wheel, a flow distributing disk, and a side board. Each segment curve of the internal tooth of the external tooth ring and the external tooth of the center wheel is in the regular polygon shape with curved edges; planet gears are arranged between the external tooth ring and the center wheel, and the number of the planet gears is equal to the sum of the curve edges of the internal tooth of the external tooth ring and the external tooth of the center wheel. The planet gears divide the seal cavity of the motor into separated working chambers whose number is the same as the planet gears. The flow distributing disk is provided with oil inlet holes and oil return holes, and the number of the oil inlet holes and the oil return holes is equal to the number of the curve edges; according to the circumference mode, the oil inlet holes and the oil return holes are arranged at intervals. Without the need of the reducing mechanism, the cam planet gear motor can be applied directly to the heavy-load tool such as the engineering machinery, etc. Under the same input power, the utility model outputs larger torque, can use the oil emulsion with the high-water base as the working medium, and has the advantages of simple structure, easy repair, great anti pollution ability, etc.

Description

Cam planet gear motor

Technical field

The utility model relates to a kind of motor, particularly a kind of motor of cam planetary gear construction.

Background technique

Mekydro motor of the prior art, general structure more complicated, making required precision height, the production difficulty is big, and for some special occasions, such as, place such as mine, boats and ships needs to increase moment of torsion, reduces rotating speed, just need to increase reducing gear in this case, not only increase cost, and take up room, increase structural complexity, in addition, gear motor of the prior art if realize the variation of output power, just need redesign adjustment to the structural parameter of each parts of motor, the conversion cost height is made complicated.

The model utility content

At the shortcoming that above-mentioned prior art exists, the utility model provides mekydro motor a kind of simple in structure, easy to use.

The technical solution adopted in the utility model is: a kind of cam planet gear motor, comprise Seal cage and output shaft, described Seal cage is by external toothing, central gear, thrust plate and side plate constitute, the pitch curve of external toothing internal tooth and central gear external tooth all is bent limit regular polygon, between external toothing and central gear, be provided with the pitch curve limit that number equals external toothing internal tooth and central gear external tooth and count the planetary pinion of sum, described planetary pinion is separated into the Seal cage of motor and the same number of independent active chamber of planetary pinion, described thrust plate is provided with the oil inlet hole identical with external toothing pitch curve limit number and the spill port of similar number, described oil inlet hole is arranged in the center on each limit of external toothing pitch curve, described spill port is arranged in each summit of external toothing pitch curve, and described oil inlet hole and described spill port are provided with at interval by the circumference mode.

The pitch curve limit number of described external toothing internal tooth can be 6, and the pitch curve limit number of central gear external tooth can be 4.

The pitch curve limit number of described external toothing internal tooth can be 8, and the pitch curve limit number of central gear external tooth can be 6.

Described cam planet gear motor, the output shaft of its outside transmitting torque can be stretched out by central gear and form.

Described cam planet gear motor, the output shaft of its outside transmitting torque can link by shaft coupling and the central gear that is designed to hollow form.

The used dynamic medium of described cam planet gear motor can be mineral oil or high-water-based emulsion

The utility model is owing to adopt planetary pinion Seal cage to be divided into the mode of many little active chambers, what connect respectively between two adjacent active chambers is filler opening and return opening, work fluid enters the active chamber that is connected with filler opening by oil inlet hole under the effect of high pressure, and it is big to make it the volume change, cause central gear to rotate, planet wheel rotates under the drive of central gear simultaneously, when the volume of active chamber reaches maximum, planetary pinion is crossed oil inlet hole and this active chamber and spill port is linked, fluid is discharged from return opening, and adjacent with it active chamber enters work cycle, and in this course, central gear passes to moment of torsion by output shaft and accepts mechanism; Owing to have a plurality of independently active chambers to carry out work, drive the planetary pinion motion by central gear, therefore, for identical input power, the moment of torsion of the utility model output is bigger, and rotating speed is lower, need not reducing gear and just can directly apply to heavy loading mechanisms such as engineering machinery.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the utility model embodiment one a cam planet arrangement of gears schematic representation;

Fig. 3 is the utility model embodiment two a cam planet arrangement of gears schematic representation.

Embodiment

As Fig. 1,2, shown in 3, the utility model comprises Seal cage and output shaft 14, external toothing 3, central gear 4, thrust plate 5, front side plate 1, back side panel 6 constitutes the Seal cage of motor, inboard at external toothing 3 is distributed with internal tooth, its pitch curve is bent limit regular polygon, the outside at central gear 4 is distributed with external tooth, its pitch curve is bent limit regular polygon, between external toothing 3 and central gear 4, be provided with planetary pinion 2, planetary pinion 2 is connected with a joggle with external toothing 3 and central gear 4, adjacent two planetary pinions 2 and external toothing 3, central gear 4, thrust plate 5 and front side plate 1, back side panel 6 is formed independent seal operation chamber respectively, and thrust plate 5 is provided with oil inlet hole 9 and spill port 12, and oil inlet hole 9 and spill port 12 are spaced.Bent limit regular polygon described here is meant that polygonal each limit is formed by connecting by the multistage line smoothing, shown in Fig. 2,3.

As shown in Figure 2, structural type for embodiment one, in external toothing 1, be evenly distributed with internal tooth, its pitch curve is bent limit regular hexagon, the central gear 4 outer internal tooths that are evenly distributed with, its pitch curve is bent limit square, and the quantity of planet wheel 2 is ten, and the quantity of the quantity of its corresponding oil inlet hole 9 and spill port 12 is respectively six.

As shown in Figure 3, structural type for embodiment two, it is with the difference of implementing one: be evenly distributed with internal tooth in external toothing 3, its pitch curve is bent limit octagon, the central gear 4 outer internal tooths that are evenly distributed with, its pitch curve is bent limit regular hexagon, and the quantity of planet wheel 2 is 14, and the quantity of the quantity of its corresponding oil inlet hole 9 and spill port 12 is respectively eight.

The utility model is because the pitch curve of external toothing internal tooth and central gear external tooth is bent limit regular polygon, make that in the central gear rotation process volume in each seal operation chamber of being made up of adjacent planetary pinion 2, external toothing 3, central gear 4, thrust plate 5, front side plate 1 and back side panel 6 is cyclically-varying.Oil inlet hole 9 on the thrust plate 5 is arranged in the center on each limit of external toothing pitch curve, the apothem minimum of pitch curve herein, corresponding working chamber volume minimum; Spill port 12 is arranged in each summit of external toothing pitch curve, the apothem maximum of pitch curve herein, corresponding working chamber volume maximum.When the volume of certain active chamber is in minimum state and oil inlet hole 9 link, its volume has the trend of increase under the effect of pressure, make central gear 4 rotate.Along with the rotation of central gear, its volume increases gradually.When the volume of active chamber reached maximum, planetary pinion 2 was crossed this oil inlet hole 9 and is made this active chamber and adjacent spill port 12 links, and adjacent with it active chamber enters work cycle.Here it is, and motor is realized the working principle of rotation continuously.

Planetary pinion 2 is arranged between external toothing 3 and the central gear 4, its linear velocity is identical with central gear 4, because the number of teeth of central gear 4 is much larger than planetary pinion 2, therefore the rotational velocity of central gear 4 is much smaller than planetary pinion 2, so under same output power, the utility model can transmit bigger moment of torsion and lower rotating speed.

Motor center of the present utility model wheel 4 can extend to output shaft to two different directions and realize different sense of rotation, also can be designed to the form of quill shaft, selects the different axle direction that goes out as required by the user.Outwards the output shaft of transmitting torque can link by shaft coupling 11 and the central gear 4 that is designed to hollow form.

Because the output power of motor is directly proportional with the axial dimension of planetary pinion 2, therefore, only need to change the axial dimension of external toothing 3, planetary pinion 2 and central gear 4, need not to change thrust plate 5 and other auxiliary equipments, just can realize the variation of output power, can realize the seriation of product easily.

In addition, the dynamic medium that the utility model motor is used can also can use high-water-based emulsion as dynamic medium with mineral oil as dynamic medium, and lower to the requirement of dynamic medium, contamination resistance is strong.

Claims

1, a kind of cam planet gear motor, comprise Seal cage and output shaft, it is characterized in that: described Seal cage is by external toothing, central gear, thrust plate and side plate constitute, the pitch curve of external toothing internal tooth and central gear external tooth all is bent limit regular polygon, between external toothing and central gear, be provided with the pitch curve limit that number equals external toothing internal tooth and central gear external tooth and count the planetary pinion of sum, described planetary pinion is separated into the Seal cage of motor and the same number of independent active chamber of planetary pinion, described thrust plate is provided with the oil inlet hole identical with external toothing pitch curve limit number and the spill port of similar number, described oil inlet hole is arranged in the center on each limit of external toothing pitch curve, described spill port is arranged in each summit of external toothing pitch curve, and described oil inlet hole and described spill port are provided with at interval by the circumference mode.

2, according to the described cam planet of claim 1 gear motor, it is characterized in that: the pitch curve limit number of described external toothing internal tooth is 6, and the pitch curve limit number of central gear external tooth is 4.

3, according to the described cam planet of claim 1 gear motor, it is characterized in that: the pitch curve limit number of described external toothing internal tooth is 8, and the pitch curve limit number of central gear external tooth is 6.

4, according to claim 1 or 2 or 3 described cam planet gear motors, it is characterized in that: the output shaft of its outside transmitting torque is stretched out by central gear and forms.

5, according to claim 1 or 2 or 3 described cam planet gear motors, it is characterized in that: the output shaft of its outside transmitting torque links by shaft coupling and the central gear that is designed to hollow form.

6, according to claim 1 or 2 or 3 described cam planet gear motors, it is characterized in that: the used dynamic medium of described cam planet gear motor is mineral oil or high-water-based emulsion.