JPS61164477U

JPS61164477U -

Info

Publication number: JPS61164477U
Application number: JP3983786U
Authority: JP
Priority date: 1986-03-20
Filing date: 1986-03-20
Publication date: 1986-10-13

Description

[Brief explanation of the drawing]

第１図は本考案による一実施例の側断面図であ
る。第２図は本考案による一実施例の円形波形カ
ムとピストンの作用状態を示す図面である。第３
図はピストン４本、カム山数３枚を基本とした液
圧モーターの出力軸への偏荷重の発生状態図であ
る。第４ａ図は出力軸への２方向釣合い状態を示
す図面で、２本のピストンが上、下死点にある状
態時を示すものである。第４ｂ図はピストンが上
、下死点からはずれた位置での動作状態を示すも
のである。第５図は３方向釣合い状態を示す組合
せの例図である。１は出力軸、２は円形波形カム、３はキー、４
，５はベアリング、６，７はケース、８はシリン
ダー、９はピストン、１０はカムフオロアー、１
１は軸受、１２は軸、１３，１３′は軸受、１４
は案内溝面、１５，１６は溝、１７，１８は分配
弁用溝、１９は導入口、２０は導管、２１は排油
口、２２は波形カム面。 FIG. 1 is a side sectional view of one embodiment of the present invention. FIG. 2 is a diagram illustrating the working state of a circular wave-shaped cam and a piston according to an embodiment of the present invention. Third
The figure is a diagram showing the occurrence of an unbalanced load on the output shaft of a hydraulic motor based on four pistons and three cam ridges. FIG. 4a is a diagram showing a two-way balanced state to the output shaft, and shows a state in which the two pistons are at the top dead center and the bottom dead center. FIG. 4b shows the operating state when the piston is at a position away from the top and bottom dead centers. FIG. 5 is an example of a combination showing a three-way balanced state. 1 is the output shaft, 2 is the circular wave cam, 3 is the key, 4
, 5 is a bearing, 6, 7 is a case, 8 is a cylinder, 9 is a piston, 10 is a cam follower, 1
1 is a bearing, 12 is a shaft, 13, 13' is a bearing, 14
15 and 16 are guide groove surfaces, 15 and 16 are grooves, 17 and 18 are distribution valve grooves, 19 is an inlet, 20 is a conduit, 21 is an oil drain port, and 22 is a corrugated cam surface.

Claims

[Scope of utility model registration request]

Pistons 9 that generate driving force are arranged equally around the output shaft 1 and parallel to the output shaft 1,
In a hydraulic motor in which the driving force of the piston 9 is opposed to a cam surface to obtain rotational force, the pistons 9, 9 are in a state where the driving force is generated by hydraulic pressure.
The pistons 9, 9... and the cam 2 are arranged so that the pistons 9, 9... and the cam 2 are always in balanced positions in two or more directions with respect to the output shaft 1, and the pistons 9, 9... and the cam 2 When arranging, a combination of an even number of pistons G and an odd number of cam ridges K, multiple times the number of pistons nG,
A hydraulic motor characterized in that a combination of nK cam ridges (where n is an integer of 2 or more) is arranged equidistantly around the circumference of the output shaft.