JPS6262034U

JPS6262034U -

Info

Publication number: JPS6262034U
Application number: JP15349385U
Authority: JP
Priority date: 1985-10-07
Filing date: 1985-10-07
Publication date: 1987-04-17

Description

[Brief explanation of the drawing]

第１図は本考案によるブレーキ冷却機構の縦断
面図、第２図は別の実施例を示す要部の縦断面図
、第３図は第２図におけるＺ矢視図、第４図は従
来構造を示す縦断面図である。１……湿式ブレー
キ室、２……ブレーキデイスク、３……プレート
、５……アクスル、１１……アクスルパイプ、１
５……減速機室、１７……ホイールハブ、１８…
…ボス筒、２３……バツクプレート、３１，３２
……溝、３３……フローテイングシール、３４…
…フローテイングシール室、３５……ピストン、
３７……導入孔、４０……遮へい板、４１……排
出油路、４２，４３，４４……通路（戻し油路）
、５０……ねじ部（ポンプ部）、５１……パイプ
（ポンプ部）、５４……油路。 Fig. 1 is a longitudinal cross-sectional view of the brake cooling mechanism according to the present invention, Fig. 2 is a longitudinal cross-sectional view of main parts showing another embodiment, Fig. 3 is a view taken along the Z arrow in Fig. 2, and Fig. 4 is a conventional one. FIG. 3 is a vertical cross-sectional view showing the structure. 1... Wet brake chamber, 2... Brake disc, 3... Plate, 5... Axle, 11... Axle pipe, 1
5...Reduction gear room, 17...Wheel hub, 18...
...Boss tube, 23...Back plate, 31, 32
...Groove, 33...Floating seal, 34...
...floating seal chamber, 35...piston,
37... Introduction hole, 40... Shielding plate, 41... Discharge oil path, 42, 43, 44... Passage (return oil path)
, 50... Threaded part (pump part), 51... Pipe (pump part), 54... Oil path.

Claims

[Scope of Claim for Utility Model Registration] (1) A wheel hub is connected to the end of the axle shaft via a final reducer, and a boss cylinder protrudes from the inner circumference of the wheel hub in the opposite direction to the reducer to support the wheel hub. A brake case surrounding the hub tube is attached to the wheel hub boss tube, and a wet brake is formed by the brake disc attached to the wheel hub boss tube, the plate and back plate attached to the brake case, and the hydraulic piston built into the brake case. A floating seal is interposed between the wheel hub and the brake case, an oil introduction hole is provided on the inner periphery of the brake disc, and a groove is created in the friction material of the brake disc that sends the oil in the oil introduction hole to the outer periphery using centrifugal force. A groove is provided between the back plate and the brake case to guide the pressurized oil on the outer periphery of the brake disc to the floating seal chamber. A discharge oil passage connects the reducer room and the reducer room, and a return oil passage connects the reducer room and the inner circumference of the brake disc so that the oil circulates between the wet brake chamber and the reduction gear room. A wet brake cooling mechanism characterized by having a pump section that forcibly promotes the flow of oil from the floating seal chamber to the reduction gear chamber. (2) Utility model registration claim 1, wherein the pump part is a radial oil passage formed at the outlet of the discharge oil passage.
Wet brake cooling mechanism as described in section. (3) The wet brake cooling according to claim 1, wherein the pump part is a threaded part provided on a rotating member facing a floating seal chamber that promotes the flow of oil into a discharge oil path. mechanism. (4) The wet brake cooling mechanism according to claim 1, wherein the pump section includes the radial oil passage and the screw section.