JPS5838632B2 - exhaust motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic motor, and more particularly to a hydraulic motor whose internal parts can be handled as a single unit.

Conventionally, for example, a drive device for a caterpillar drive axle includes a hydraulic motor, a deceleration mechanism for decelerating the rotation of the hydraulic motor, and a drive structure such as a sprocket or a caterpillar driven through the deceleration mechanism.

Conventionally, the hydraulic motor and deceleration mechanism were not placed within the width of the caterpillar, so when the caterpillar was traveling on uneven ground, the hydraulic motor and deceleration mechanism collided with obstacles protruding from the ground between the caterpillars. Accidents such as accidents occurring frequently occurred, and the hydraulic motor and deceleration mechanism were prone to damage.

For this reason, a device was devised to accommodate the hydraulic motor and reduction mechanism within the width of the caterpillar.In such a device, the reduction mechanism and sprocket were connected to the motor casing of the hydraulic motor, so only the hydraulic motor could be used. The problem was that it was difficult to install and remove, and maintenance required a great deal of time and effort.

The present invention was made in view of these drawbacks, and consists of dividing a hydraulic motor into a motor casing and internal parts other than the motor casing, and converting these internal parts into cartridges for easy installation and removal. Easy maintenance
It is an object of the present invention to provide a hydraulic motor which is capable of rubbing and whose internal parts can be handled as a single unit.

Such a hydraulic motor of the present invention includes a motor casing,
The motor casing is removably attached to the motor casing with bolts, the timing plate is provided on the front of the rear casing, the piston cylinder assembly is provided on the front of the timing plate, and the piston cylinder assembly is provided on the front of the piston cylinder assembly. In a hydraulic motor including a swash plate that is prevented from rotating by the motor casing, and an output shaft that rotates integrally with the piston cylinder assembly, one end is directly attached to the swash plate and the other end is directly attached to the swash plate. A holding means is provided for restricting the casing and the swash plate from rotating relative to each other in the circumferential direction only when the output shaft is not rotating, and the holding means holds the rear casing, timing plate, piston cylinder assembly, swash plate, and output. The shaft is made into a single unit, and the work of assembling or removing the shaft into the motor casing is facilitated.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a rear casing, and this rear casing 1 has two inflow and outflow passages 2.3.

Each of the inflow and outflow passages 2 and 3 is formed in an arc shape on its front side.

The timing plate 4 is provided on the front surface of the rear casing 1 and has an inflow/outflow passage 5 communicating with the inflow/outflow passages 2 and 3.
It has ゜6.

The timing plate 4 is connected to the rear casing 1 by a knock pin 7 so as not to rotate in the circumferential direction.

The cylinder block 8 is provided on the front surface of the timing plate 4 and has a large number of holes 9 extending parallel to the axial direction and communicating with the inflow and outflow passages 5 and 6 of the timing plate 4.

A piston 10 is slidably housed in each hole 9 of the cylinder 8, and the piston 10 is caused to reciprocate by flowing hydraulic oil into and discharging the hole 9.

A spherical portion 9a is formed at the tip of the piston 10, and this spherical portion 9a is slidably engaged with the shoe 11.

A swash plate 12 provided on the front side of the piston 10 has an inclined recess 13 formed on the surface facing the piston 9, and a thrust plate 14 that contacts the shoe 11 is provided in the recess 13.

The output shaft 15 is located at the center of the cylinder 8, and a spline 17 that meshes with a spline 16 formed on the inner wall of the cylinder 8 is formed in the middle thereof.

A spline 18 is formed at the tip of the output shaft 15 to engage with a hollow spline shaft, which will be described later.

A bearing 19 that rotatably supports the output shaft 15 is provided on the front surface of the swash plate 12, and a seal assembly 20 is attached to the swash plate 12 with screws 21.

A thin metal cylindrical body 22 serving as a holding means is directly connected to the rear casing 1 at one end and the swash plate 12 at the other end, so that the rear casing 1 and the swash plate 12 are mutually opposed to each other in the circumferential direction during transportation, for example. Control so that it does not rotate.

That is, both ends of the cylindrical body 22 are fixed by punching into several holes 1a and 12a formed on the circumferential surfaces of the beamer casing 1 and the swash plate 12, so that the rear casing 1 and the swash plate 12 are relative to each other in the circumferential direction. It has a structure that does not rotate.

A hole 23 extending parallel to the output shaft 15 is provided on the front surface of the swash plate 12, and a knock pin 24 is inserted into the hole 23 so as to be engaged with and positioned in a motor casing of a hydraulic motor to be described later.
is inserted into.

The pipe joints 25, 26 are fixed to the rear surface of the carrier casing 1 by bolts 27, and have inlet and outlet passages 28 and 29 communicating with the inlet and outlet passages 2.3.

The pipe fittings 25.26 are connected to a hydraulic source via pipes 30.31.

The drain pipe 32 communicates with the inside of the cylindrical body 22 via a hole 33 formed in the rear casing 1.

In this way, as shown in FIGS.
Timing plate 4, piston/cylinder assembly 8,
10, the swash plate 12 and the output shaft 15 are detachably attached to a motor casing of a hydraulic motor to be described later by bolts 34.

In FIG. 3, the rear casing 1 is fixed to a motor casing 35 by bolts 34, and a hydraulic unit 36 is housed within this motor casing 35.

Before the rear casing 1 is fixed, the knock pin 24 is inserted into the hole 37 formed in the motor casing 35, so that the swash plate 12 is prevented from rotating by the motor casing 35 and is positioned.

As described above, the rear casing 1 is fixed to the motor casing 35G by the bolts 34, and the swash plate 12 is connected to the motor casing 35 by the knock pins 24, so that when the output shaft 15 is driven and rotated, the rear casing The relative rotational force acting between the motor casing 35 and the swash plate 12 is received by the motor casing 35 and the cylindrical body 22
does not work.

Therefore, the cylindrical body 22 may be thin.

Splines 38a are provided at both ends of the inner peripheral surface of the hollow shaft 38.
, 38b are formed and mesh with the spline 38b of the output shaft 15 to transmit the rotation of the output shaft 15.

A so-called V-spline 39a formed on the circumferential surface of a concave spherical bearing 39 is engaged with the spline 38a of the hollow shaft 38, and this concave spherical bearing 39 is always projected outward by a compression spring 40 within the hollow shaft 38. being done.

A convex spherical bearing 42 is formed at the center of the inner surface of the case 41, and this convex spherical bearing 42 is engaged with the concave spherical bearing 39.

Splines 38c are provided at both ends of the outer peripheral surface of the hollow shaft 38.
, 38d are formed, and the spline 38c is configured to mesh with a spline 43a formed on the inner peripheral surface of the input sun gear 43.

The planetary gear 44 is a first gear 44a that meshes with the sun gear 43.
It is rotatably supported by a carrier 45 via a shaft 46 and a bearing 47.

The annular fixed sun gear 48 is the first gear 44 of the planetary gear 44.
A spline 48a is formed on the rear end of the inner periphery of the casing 35, and this spline 48a engages with a spline 35a formed on the front end of the outer periphery of the casing 35.

A second gear 44b integrally formed with the first gear 44a
meshes with the output annular sun gear 49.

A spline 49a is formed on the outer peripheral surface of the output annular sun gear 49, and this spline 49a meshes with a spline 41a formed on the inner peripheral surface of the case 41.

Sprocket wheel 50 is fixed to drive shaft 52 with bolts 51, rotatably attached to motor casing 35 via drive bearing 53, and fixed to case 41 via bolts 54.

The track link 55 has a sprocket wheel 50 on its inner surface.
They are connected by a pin 56 that engages with the two.

The motor casing 35 is attached to the frame 5 by bolts 57.
It is fixed at 8.

Next, the operation of the present invention will be explained.

The rotation of the cylinder 8 caused by supplying and discharging hydraulic pressure to the pipes 30 , 31 is transmitted to the output shaft 15 .

Next, the hollow shaft 38, the input sun gear 43, and the planetary gear 44
, the sprocket wheel 50 is rotated through the output sun gear 49, the case 41, and the drive shaft 52, and the track link 55 is driven through the pin 56.

In addition, when internal parts of the hydraulic motor break down (in this case, conventionally it was necessary to loosen the bolt 57 and remove the entire hydraulic motor, reduction mechanism, and sprocket wheel 50 from the frame 58, but in this invention, the bolt 3
4 and take out the hydraulic unit 36.

At this time, the motor casing 35, the speed reduction mechanism attached to the motor casing 35, the sprocket wheel 50, etc. remain on the vehicle body side of the caterpillar set vehicle.

In the extracted hydraulic unit 36, since the rear casing 1 and the swash plate 12 are connected by the cylindrical body 22, even when the rear casing 1 and the swash plate 12 are transported,
Relative rotation with the cylindrical body 22 is regulated by the cylindrical body 22.

Next, since the repaired hydraulic unit 36 has been made into a single unit, the assembly work is completed by inserting it into the motor casing 35 as it is and tightening the bolts 34.

Furthermore, conventionally, when assembling built-in parts into the motor casing, even if the built-in parts could be assembled outside the temporary stand, the rear casing and swash plate rotated relative to each other, so the swash plate was prevented from rotating by the motor casing. However, in the present invention, since the retainer prevents relative rotation of the flange and the swash plate, the alignment of the two is easy.

In the above-mentioned embodiment, the metallic cylindrical body 22 connecting the rear casing 1 and the swash plate 12 has been described, but this cylindrical body 22 is made of a material having a certain degree of rigidity, such as plastic or hard tube rubber. Any structure may be used as long as the swash plate 1 and the swash plate 12 do not rotate relative to each other in the circumferential direction.

Further, if the rear casing 1 and the swash plate 12 are held so that they do not rotate relative to each other in the circumferential direction, the cylindrical body is simply a plurality of plate-like bodies that connect the rear casing 1 and the swash plate 12. Good too.

Although the cylindrical body 22 may have a large number of holes, the above-mentioned cylindrical body is preferable in order to prevent assemblies inside the cylindrical body 22 such as the cylinder 8 and the piston 10 from adhering to dust.

Further, in the embodiment described above (in this case, there are holes 2 on the front surface of the swash plate 12).
3, the knock pin 24 is inserted into the hole 23, and the hydraulic unit 36 is inserted into the motor casing 35 and the knock pin 24 is inserted into the hole 37 of the motor casing 35 when positioning it. In the present invention, any positioning means such as a key, spline, clutch, etc. may be used as such positioning means.

In addition to the above-mentioned positioning function, the above-mentioned positioning means has a function of absorbing and absorbing the rotational torque of the swash plate 12 accompanying the rotation of the motor.

Further, in the above embodiment, the beamer casing 1 and the timing plate 4 are engaged with each other by the dowel pin 7, but in the present invention, any other means may be used as long as the beamer casing 1 and the timing plate 4 are integrated. It's okay.

Further, instead of the sprocket wheel 50 described above, a normal wheel may be installed and run on the road surface.

Further, in the above embodiment, the hydraulic unit 36 was used as a drive source for driving the caterpillar, but it may also be used as a drive source for a winding drum for ropes, wires, etc., as shown in FIG. good.

In FIG. 4, a frame 70 fixes and holds a motor casing 72 with bolts 71, and after a cartridge-type hydraulic unit 36 is inserted into the motor casing 72 and positioned with knock pins 241, the motor casing 72 is fixed with bolts 73. is fixed to.

Hydraulic unit 36 Output shaft 15' (7) Spline 18
It is designed to mesh with the spline 75a of the boss 75 of the Gj drum 74.

The bolt 76 fixes the drum 74 to the output shaft 15' by screwing its tip into the tip of the output shaft 15'.

Note that the drum 74 is rotatably supported by the motor casing 72 via a bearing 77.

In this embodiment (also in this case, the output shaft 1 of the hydraulic unit 36'
The rotation of the drum T4 can rotate the drum T4.

In addition, in the above-mentioned embodiment, the case where hydraulic oil was used as the working fluid was explained, but in the present invention, any fluid other than hydraulic oil may be used.

As explained above, according to the present invention, one end of the holding means is directly attached to the rear casing (the other end is directly attached to the swash plate, and the rear casing and the swash plate are regulated so as not to rotate relative to each other in the circumferential direction. By doing this, the rear casing, timing plate, piston cylinder assembly, swash plate, and output shaft were made into a single unit, which made it possible to handle these units separately from the motor casing.

As a result, the unit is connected to another drive device)
It can be attached and removed in a screw-type manner, and the swash plate can be easily aligned to the motor casing.

Particularly when applied to a drive device for a vehicle with a set of tracks, even if a speed reduction mechanism or the like is attached to the motor casing, the unit can be extremely easily attached and detached as a single unit.

Therefore, there is no need to lift the unit by a jack, and the unit can be replaced in a short time with extremely little effort.

Furthermore, before the unit is installed, its performance can be confirmed using other test casings,
Further, since the casing that rotatably supports the drive wheels and the motor casing of the hydraulic motor can be used in common, the entire vehicle becomes lightweight and inexpensive.

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention, and FIG. 1 is a sectional view thereof, FIG. 2 is a plan view taken along the line A-A in FIG. 1, and FIG. 3 is a hydraulic motor of the present invention. FIG. 4 is a sectional view of the hydraulic motor of the present invention applied to a winding device for ropes, wires, etc. 1 is a rear casing, 2 and 3 are rear casing inflow and outflow passages, 4 is a timing plate, 5°6 is a timing plate distribution passage, 8 and 9 are piston cylinder assemblies, 12 is a swash plate, 15 is an output shaft, 22 is a holding means; 3
5 is a motor casing.

Claims (1)

[Claims] 1. A motor casing, a motor casing that is detachably attached to the motor casing with bolts, a timing plate provided on the front of the rear casing, a piston cylinder assembly provided on the front of the timing plate, and a piston cylinder assembly provided on the front of the timing plate. A hydraulic motor (where one end is connected to the rear casing and the other end is inclined The rear casing, the timing plate, the piston cylinder assembly, the swash plate and A hydraulic motor characterized in that the output shaft is made into a single unit, making it easy to assemble or remove the output shaft from the motor casing.