JPS624964A - Pto-shaft lubricating apparatus for torque converter - Google Patents

Abstract

PURPOSE:To prevent the abrasion of spline teeth by forming an oil reservoir between the pumps and annular bosses on both sides of a housing and forming a bearing contiguous to the oil reservoir into liquidtight structure and forming an oil inflow hole in the upper part of the annular boss. CONSTITUTION:An oil inflow hole 37 is formed in the most upper part of the top edge side part 35 of a boss 10, and the space 27 on the periphery of a gear 3 communicates with the upper space of an oil reservoir 38. A bearing 8 contiguous to the oil reservoir 38 has the liquidtight structure. Therefore, the spline fitting parts 20 and 21 of the cylindrical shafts 5 and 6 can be lubricat ed by utilizing the oil for lubricating the gear 3, etc., and the abnormal abrasion of this part can be certainly prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applied to construction machinery vehicles and industrial inverters such as barno shift devices. 1]-1-
Regarding the 0-axis lubrication system.

(Prior Art) In FIG. 2, there are external teeth 2 in a housing 1 having a closed structure.
It is installed in such a position that the center line of the t2t73 line extends in the direction of water). The gear 33 includes a cylindrical shaft 5.6 that protrudes from both sides, and the outer peripheral surface of the cylindrical shaft bs6 is supported on the inner periphery of the annular boss 9.10 of the housing 1 via a ball bearing 7.8. One boss 9 is formed integrally with the main body of the housing 10. The other boss 10 is stepped on an annular cover 12 fixed to the main body of the housing 1.

A charging pump 15 is fixed to the outer surface of the sizing 1 (near the bearing 7), and a main pump 16 is fixed to the outer surface of the cover 12 near the bearing 8.

The pump 15 is used to pressurize the hydraulic oil of the torque converter. The pump 16 is used, for example, to add hydraulic oil to a hydraulic working machine (oil honey cylinder, etc.).
He gets fucked. The input shafts 17, 1811 of the pumps 15, 16 are inserted into the interior of the cylinder shafts b, 6, respectively, and are connected to the cylinder shaft 5.6 via spline fittings 81, 120, 21. The external tooth 2 of the gear 3 is connected to the drive gear 1723 via the idler gear 22.
23 i, L torque converter 25
(Torque 21 Inverter manual part) It is fixed at the end of the cylinder shaft 26.

The rotational force transmitted to this structure from the engine (not shown) through the bone plate 1 25 (λ to the drive) 2:3 is transmitted to the gear V3 via the idler gear X/22,
−1/3 is transmitted to the human power shaft 17.18 via the spline cylinder shaft 5.6 and the spline fitting portion 20.21.

Also, in order to lubricate gear A/3 and gear A/22 and 23 during this operation, housing 1 has l! Spray lubricating oil towards X-22 in the direction of arrow Q.
(Illustrated) is a punch.

(Problems to be Solved by the Invention) However, according to the above-mentioned conventional WJ construction, the PI oil with the arrow (K-like supply bar/,: 8v1) is 1-Hikino: 3.22.
23 i, m J, are scattered into the space 27 around them, but the spline fitting part 20 inside the cylinder shaft 5.6
．． 21 To 2 does not reach, ■Spline fitting part 20.2
Lubricate 1, second QI river equipment Pi 'b installation + 1j
Therefore, abnormal wear occurs on the mesoline teeth of the spline fitting portions 20 and 21 due to insufficient av+i11.

(Means for Solving the Problems) The present invention solves the problem 1-1 by improving the above-mentioned 11 conventional techniques. An oil sump is formed between the annular boss and the bearing adjacent to the oil sump has a nearly liquid-tight structure, and an oil inlet hole is provided at the top of the annular boss adjacent to the oil sump. .

(Operation) According to the above structure, a part of the lubricating oil droplets scattered around the gear flows into the oil reservoir from the oil inflow hole of the annular boss. Collected oil in the sump/: ! l￥! I Jianyu is adjacent J
It flows into one spline fitting part, passes through the inside of the gear, and reaches the other spline fitting part. Therefore, both spline fitting parts are sufficiently lubricated.

(Example) In FIG. 1, parts corresponding to the above-mentioned parts in FIG. body, '30
It is fixed to the outer surface of the housing 1 through a gasket by bolts t and l . Cover body 3 ()
A GEL commercial-shaped mounting seat 32 is integrally protruded from the outer surface of the pump, and a pump 16 is fitted into the mounting seat 32 in a spigot type manner and fixed in a liquid-tight manner.

The boss 10 is connected to the gear 33 from the inner circumference of the cover main body 330.
It protrudes to the side. The boss 10 has a large outer diameter at a portion 33 near the cover main body 30, and the large diameter portion 33 fits into a hole in an end wall 34 of the housing 1. The outer diameter of the tip side portion 3F) of the boss 10 is small;
G is overhanging into space 27.

An oil inflow hole 37 is provided in the portion of the portion 35 toward the end b''. Reservoir 380>,
One part is connected to the space. The oil reservoir 338 is cylindrical 111
It is formed inside the grinding seat 32 and between the cover body 30 and the pump 160. Further, the bearing 8 adjacent to the oil reservoir 38 has a seal 36 or a shield incorporated therein, and the bearing 8 has a liquid-tight structure or a generally liquid-tight structure.

Note that the other bearing 7 has a liquid-tight structure and has four bearings.

According to the above structure, S! A part of the lubricant oil splashed into the oil sump 38 flows from the oil inlet hole 37 into the oil sump 38, for example, to the same level as the center line of the 1! The lubricating oil in this oil reservoir 38 is supplied to the spline fitting part 21, the J straw cylinder shaft 6, and the human power shaft 18.
1 lvl H!
l lll. The lubricating oil that has passed through the spline fitting part 21 flows through the inside of the gear 3 to the spline fitting part 20 on the other side, and lubricates the spline fitting part 20. Pass through the spline fitting part 20! , the lubricating oil is 161 shaft F] and the pump''
It flows up the space 39 between I Fi and passes through the inside of the shaft/receiver 7 (it ash into the space 27. The ash lubricating oil is collected in the space 27 and filtered by τ! It is transferred into the space 21 (j) as shown by the arrow 1'il O.

(Effect of the invention) The above-described J, U1J present invention utilizes the A-il that crushes the 1=1 mechanism of J, Rudo, Gire 3, etc. by 8v1, and the cylinder shaft 1)
, fi (1)-l 0ihb ) to lubricate the spline 1 fitting portion 20.21 (゛, spline fitting portion 20
．． 210) V4 regular wear can be reliably prevented by +11J.

Also, as in the embodiment shown in the figure, when the boss part 3h is projected into the space 27, the part 35 is used as an oil pan L-J, and the part 3h is moved to the right.
10. Splashed oil in the space 27 can be recovered more efficiently and a large amount of all lubricating oil can be prevented from flowing into the oil inflow hole 37.

It is necessary to install 11 lubricating devices on the spline fitting parts 20 and 21.
·be.

(Another Embodiment) It is also possible to provide oil inlet holes and seals on the boss E and the bearing 7, respectively, and configure an oil reservoir in the space 39.

4.Drawing song 'JE FJ2 Akira

Claims (2)

[Claims] (1) A gear having external teeth to which lubricating oil is supplied is provided in a housing of a closed structure with its center line being approximately horizontal,
The gear is connected to a torque converter input section, the gear is provided with a pair of cylindrical shafts protruding from both sides of the main body, both cylindrical shafts are supported by an annular boss of the housing via bearings, and the torque converter is mounted on both sides of the housing. A hydraulic pump and an auxiliary machine are provided, and the input shafts of the pump and the auxiliary machine are connected to the inner peripheries of adjacent cylindrical shafts via spline fittings, and the pump or work machine and the annular boss adjacent thereto are connected. A PTO shaft lubrication device for a torque converter, characterized in that an oil reservoir is formed in between, a bearing adjacent to the oil reservoir has a substantially liquid-tight structure, and an oil inflow hole is provided in the upper part of an annular boss adjacent to the oil reservoir. (2) PTO of the torque converter according to claim 1, wherein the auxiliary machine is a pump for pressurizing hydraulic oil of a working machine.
Shaft lubrication device.