JPS61175581U

JPS61175581U -

Info

Publication number: JPS61175581U
Application number: JP5975285U
Authority: JP
Priority date: 1985-04-22
Filing date: 1985-04-22
Publication date: 1986-11-01

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の実施例に係り、
第１図は軸線から上方が非制動状態、下方が制動
状態として示すブレーキ内蔵形斜板式液圧モータ
の縦断面図、第２図は第１図中のシリンダブロツ
ク単体の縦断面図、第３図は第２図中の―矢
示方向断面図、第４図および第５図は従来技術に
係り、第４図は従来技術によるブレーキ内蔵形斜
板式液圧モータの縦断面図、第５図は液圧モータ
を駆動するための油圧回路図を示す。２１……リアケーシング、２２……センタケー
シング、２３……フロントケーシング、２４……
出力軸、２７……シリンダブロツク、３０，３０
′……外周係合部、３１……縦溝、３２……ピス
トン、３３……シユー（摺動部材）、３４……斜
板、３６……弁板、３８，３８′……スペーサ、
３９……デイスタントピース、４０，４０′……
ブレーキピストン、４１，４１′……内周係合部
、４２，４２′……皿ばね（ばね）、４３，４３
′……液圧室、４４……油通路、Ａ，Ｂ，Ｃ……
室、Ｘ―Ｘ……軸線。 Figures 1 to 3 relate to embodiments of the present invention,
Fig. 1 is a vertical cross-sectional view of a swash plate type hydraulic motor with a built-in brake, with the upper part from the axis shown in the non-braking state and the lower part shown in the braking state, Fig. 2 is a longitudinal cross-sectional view of the cylinder block alone in Fig. The figures are a sectional view in the direction of the - arrow in Fig. 2, Figs. 4 and 5 relate to the prior art, Fig. 4 is a longitudinal sectional view of a swash plate type hydraulic motor with built-in brake according to the prior art, and Fig. 5 shows a hydraulic circuit diagram for driving a hydraulic motor. 21...Rear casing, 22...Center casing, 23...Front casing, 24...
Output shaft, 27... Cylinder block, 30, 30
'...Outer circumferential engaging portion, 31... Vertical groove, 32... Piston, 33... Shu (sliding member), 34... Swash plate, 36... Valve plate, 38, 38'... Spacer,
39... Daystant piece, 40, 40'...
Brake piston, 41, 41'... Inner circumferential engagement part, 42, 42'... Belleville spring (spring), 43, 43
'... Hydraulic pressure chamber, 44... Oil passage, A, B, C...
Chamber, X-X...axis line.

Claims

[Claims for Utility Model Registration] (1) A casing, an output shaft rotatably supported by the casing, a cylinder block having a plurality of cylinders and rotating integrally with the output shaft, and a cylinder block having a plurality of cylinders that rotates integrally with the output shaft; a movably provided piston;
A swash plate type hydraulic motor comprising a sliding member provided on each of the pistons, a swash plate in sliding contact with each of the sliding members, and a valve plate for supplying and discharging pressure oil into each of the cylinders. , a pair of conical outer circumferential engaging parts facing each other is provided on the outer circumferential surface of the cylinder block, and an inner circumferential engaging part that engages and separates from each of the outer circumferential engaging parts, respectively, is provided between the casing and the cylinder block. A pair of cylindrical brake pistons having a portion are provided, and a spring is provided between each brake piston and the casing to press each brake piston in a direction to engage with the outer circumferential engaging portion to apply a braking action. A swash plate type hydraulic motor with a built-in brake, further comprising a hydraulic chamber for guiding hydraulic pressure for releasing brakes between the casing and each brake piston. (2) The swash plate type hydraulic motor with built-in brake according to claim (1), wherein at least one vertical groove in the axial direction is formed on the outer peripheral surface of the cylinder block. (3) A swash plate type hydraulic motor with a built-in brake according to claim (1), wherein hydraulic pressure for releasing the brake is simultaneously introduced into each of the hydraulic pressure chambers.