Fixed vane type hydraulic motor

Abstract

Disclosed is a fixed vane type hydraulic motor in which a steady output can be obtained and rotation speed of an output shaft can be varied. The hydraulic motor includes a main body having an actuating space provided therein, a fluid passing device to make the fluid flow toward the main body and a horizontal rotation body, a fluid compulsorily circulating device to compulsorily circulate the fluid through the respective fluid chambers, and an oblique rotation body having a rotation plate which is rotatably mounted to the opened opposite side of the main body and to the horizontal rotation body by a fixing device.

1 . A fixed vane type hydraulic motor comprising: a main body including an actuating space provided therein and having both opened sides;
 a horizontal rotation body rotatably mounted in the actuating space and including a fluid passing space, in which a spherical groove with an opened opposite end is formed and fluid chambers are formed around the spherical groove and are partitioned by a plurality of rotating horizontal partitions, and an output shaft;   a fluid passing device provided at both lateral plates of the respective fluid chambers and both lateral plates of the actuating space to make the fluid flow;   a fluid compulsorily circulating device independently provided outside the main body to introduce and discharge the fluid through both sides of the respective fluid chambers via the fluid passing device such that the fluid is compulsorily circulated to the respective fluid chambers; and an oblique rotation body including a rotation plate which is rotatably mounted to the opened opposite side of the main body and in the spherical groove of the horizontal rotation body by a fixing device and protruding toward the respective fluid chambers, i.e., surroundings of the spherical groove such that, due to the flow of the fluid circulated under pressure by the fluid compulsorily circulating device and the fluid passing device, volume of both spaces of the respective fluid chambers is varied and the rotating horizontal plates in the respective fluid chambers rotate to obtain an output from the output shaft of the horizontal rotation body.   
   
   
       2 . The fixed vane type hydraulic motor according to  claim 1 , wherein, the oblique rotation body further comprises:
 an oblique rotation shaft rotatably mounted in the opened opposite side of the main body and in the spherical groove; and   a spherical body around which the rotation plate protrudes.   
   
   
       3 . The fixed vane type hydraulic motor according to  claim 2 , wherein the fixing device comprises:
 an oblique hole provided in an opened side of the main body; and a sliding device provided in the oblique hole to rotatably support the oblique rotation shaft of the spherical body.   
   
   
       4 . The fixed vane type hydraulic motor according to  claim 2 , wherein the rotation body comprises a plurality of partitions provided in the respective fluid chambers obliquely to be varied in an arc width; and
 the fixing device comprises an angle changing unit provided in the opened side of the main body to change an angle of the oblique rotation body by varying a position of the opposite end of the oblique rotation body such that a rotation speed of the output shaft is varied.   
   
   
       5 . The fixed vane type hydraulic motor according to  claim 4 , wherein the angle changing unit comprises:
 a support to rotatably support of the opposite end of the oblique rotation body; and   an elevation device provided to the opened opposite side of the main body to elevate and lower the support manually or with a driving device to vary an oblique angle of the oblique rotation body.   
   
   
       6 . The fixed vane type hydraulic motor according to  claim 5 , wherein the support comprises a bearing bracket to rotatably support the opposite end of the oblique rotation body and which has a spherical outer circumference; and
 the elevation device comprises:   an elevation bracket to surround the spherical circumference of the bearing bracket and which has a tap hole formed in the upper side thereof; a fixing housing to completely surround the opposite end of the oblique rotation body and which has a through-hole formed in a vertical position corresponding to the elevation bracket;   an elevation thread shaft rotatably inserted into the through-hole and which has a lower end rotatably coupled in the tap hole of the elevation bracket; and   a handle manipulated manually or by a motor driven by electric power, provided from the outside, that is, the upper side of the elevation thread shaft.   
   
   
       7 . The fixed vane type hydraulic motor according to  claim 5 , wherein the support comprises a bearing bracket to rotatably support the opposite end of the oblique rotation body and which has a spherical outer circumference; and
 the elevation device comprises: an elevation bracket to surround the spherical circumference of the bearing bracket;   a fixing housing to completely surround the opposite end of the oblique rotation body and which has a through-hole formed in a vertical position corresponding to the elevation bracket;   an elevation shaft to penetrate the through-hole and which has a lower end fixed to the upper side of the elevation bracket; and   an actuator provided at the outside, that is, the upper side of the elevation shaft and driven by a fluid or electric power to elevate and lower the elevation shaft.   
   
   
       8 . The fixed vane type hydraulic motor according to  claim 1 , wherein the oblique rotation body comprises:
 a spherical body rotatably inserted into the spherical groove and which has a horizontal through-hole formed therein and a rotation plate provided at the circumference; and   a shaft penetrating the horizontal through-hole via a bush to move laterally without rotation and protruding outward of the horizontal rotation body.   
   
   
       9 . The fixed vane type hydraulic motor according to  claim 8 , wherein the rotation plate comprises a plurality of partitions obliquely provided in the respective fluid chambers and which have varying arc widths; and
 the fixing device comprises:   a through-hole formed in a shaft of the oblique rotation body; and an elevation device provided in the opened opposite side of the main body and connected to the through-hole by a hinge shaft to be elevated and lowered manually or by a driving device to vary the oblique angle of the oblique rotation body.   
   
   
       10 . The fixed vane type hydraulic motor according to  claim 9 , wherein the elevation device comprises:
 an elevation bracket having a lower end connected to the through-hole by the hinge shaft and a tap hole formed in the upper side thereof;   a fixing housing to completely surround the opposite end of the oblique rotation body and which has a through-hole formed in a vertical position corresponding to the elevation bracket;   an elevation thread shaft rotatably inserted into the through-hole and which has a lower end rotatably coupled in the tap hole of the elevation bracket; and   a handle manipulated manually or by a motor driven by electric power that is provided from the outside, that is, the upper side of the elevation thread shaft.   
   
   
       11 . The fixed vane type hydraulic motor according to  claim 9 , wherein the elevation device comprises:
 an elevation bracket having a lower end connected to the through-hole by the hinge shaft;   a fixing housing to completely surround the opposite end of the oblique rotation body and which has a through-hole formed in a vertical position corresponding to the elevation bracket;   an elevation shaft to penetrate the through-hole and which has a lower end fixed to the upper side of the elevation bracket; and   an actuator provided at the outside, that is, the upper side of the elevation shaft and driven by a fluid or electric power to elevate and lower the elevation shaft.   
   
   
       12 . The fixed vane type hydraulic motor according to  claim 1 , wherein the fluid passing device includes at least one passing hole formed in both lateral plates of the respective fluid chambers, and a plurality of long arc-shaped holes formed around the both lateral plates of the actuating space to correspond to the arc widths of the respective fluid chambers to selectively introduce and discharge the fluid; and
 the fluid compulsorily circulating device comprises:   fluid introducing and discharging pipes, mounted in the long arc-shaped holes, through which the fluid is introduced and discharged; and a fluid pump provided between the introducing pipe and the discharging pipe to compulsorily circulate the fluid.   
   
   
       13 . The fixed vane type hydraulic motor according to  claim 1 , wherein the inner sides of the both lateral plates of the fluid passing space are formed by cone-shaped slopes having inwardly-protruding central surroundings.