JPH0353000Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a governor weight support device for an engine.

<Prior Art> Conventionally, there is a device of this type configured as shown in FIG.

In this system, a weight holder 13 of the governor is rotatably supported in a bearing hole 12 of a fixed wall 8 of the engine and connected to the crankshaft, and a weight holder is placed in a holder chamber 15 formed on one side of the weight holder 13. 16
The governor weight 17 is pivoted to the weight holder 16 via a fulcrum pin 18 so as to be centrifugally swingable, and an oil groove 25 is formed in the fitting surface between the bearing hole 12 and the weight holder 13. The oil groove 25 is connected to the lubricating device 2
This is configured to communicate with the oil passage 23 of No. 4.

<Problems to be solved by the invention> In the structure as described above, the lubricating oil mist floating around the centrifugal governor is attached to each sliding part of the governor to lubricate it, but the weight holder 16 and Governor weight 1 supported by this
The lubricating oil attached to 7 will be blown off by centrifugal force, so move the governor weight 17 to weight holder 1.
The portion of the fulcrum pin 18 that is pivotally supported by the fulcrum pin 6 becomes insufficiently lubricated.

This obstructs the smooth movement of the governor weight 17 and reduces the precision of the governor.
It also wears out quickly due to lack of lubrication.

This problem becomes more pronounced as the engine speed increases.

Therefore, an object of the present invention is to supply a sufficient amount of lubricating oil to the governor so that the accuracy of the governor can always be maintained at a high level.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a governor weight 17 as shown in FIGS. 1 and 2, for example.
The oil guide hole 26 for supplying lubricating oil to the fulcrum pin 18 is connected to the peripheral wall portion 15 of the holder chamber 15 of the weight holder 13.
A is constructed by penetrating the oil groove 25 toward the holder chamber 15.

<Operation> First, when the engine is operated, the lubricating device 24
is driven, and lubricating oil is supplied under pressure to each part of the engine.

The lubricating oil supplied to the oil groove 25 on the inner peripheral surface of the bearing hole through the oil passage 23 is ejected into the holder chamber 15 from the oil guide hole 26 on the peripheral wall surface portion 15a of the holder chamber 15, and The fulcrum pin 18 of the governor weight 17 is strongly lubricated.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a longitudinal sectional side view of a governor portion attached to a diesel engine, and FIG. 2 shows a longitudinal sectional view of the main parts.

In the figure, reference numeral 1 indicates a governor device, and this governor device 1 includes a governor spring 3 whose tension is set by a manual operation lever 2, and a governor spring 3 whose tension is set by a manual operation lever 2.
The secondary governor lever 4 and the torque limiter 5 with a tension of
It consists of a main governor lever 6 that is biased toward the fuel increase side via the main governor lever 6 and a centrifugal governor 7 that pushes the main governor lever 6 toward the fuel decrease side against the tension of the governor spring 3. ) is incorporated into a pump casing (fixed wall) 8 formed in one piece.

The centrifugal governor 7 has a rotating shaft 9 rotatably supported across both front and rear walls 8a and 8b of the pump casing 8.

That is, the rear end of the rotating shaft 9 is pivotally supported in a bearing hole 10 formed in the rear wall 8b of the pump casing 8 via a ball bearing 11, and the front end of the rotating shaft 9 is connected to the front end of the pump casing 8. It is rotatably supported via a weight holder 13 in a large diameter bearing hole 12 formed in the side wall 8b.

The weight pedestal 13 is integrally formed with a bowl-shaped pedestal portion 13a and a governor gear 13b, and is fitted and fixed to the tip of the rotating shaft 9 with a key 14.

A weight holder 16 is fixed to a holder chamber 15 inside the weight holder 13, and governor weights 17 are installed near both ends of the weight holder 16.
is pivotably supported on a fulcrum pin 18 fixed to the weight holder 16.

As shown in FIG. 2, this governor weight 17 has a weight portion 17a formed in a semicircular shape and an output arm 17b protrudingly formed in an L-shape. The main governor lever 6 is moved against the tension of the governor spring 3 by sliding the governor sleeve 19 fitted on the outside so that it can move freely.
is made to swing toward the fuel reduction side.

Also, a bearing hole 12 into which the weight holder 16 is fitted is provided.
is formed by fitting a metal bearing 21 into a support hole 20, and a hydraulic pump 2 is mounted on the inner peripheral surface of the bearing hole 12.
An oil groove 25 is formed to which lubricating oil is supplied from a lubricating device 24 composed of a lubricating device 24 and an oil passage 23.

On the other hand, in the peripheral wall portion (pedestal portion 13a) 15a of the holder chamber 15 of the weight pedestal 13, an oil guide hole 26 is formed penetratingly from the oil groove 25 toward the fulcrum pin 18 of the holder chamber 15.

In the figure, reference numeral 28 is a lubricating oil return hole, which is the third lubricating oil return hole.
It is formed at a higher position than the conventional example shown in the figure, and a part of the centrifugal governor 7 is immersed in the lubricating oil 29 collected at the bottom of the pump casing 8 to further improve the lubrication performance. This is what I did.

The operation of the governor weight support device configured as described above will be explained next.

The lubricating device 24 is driven by the operation of the engine, and lubricating oil is supplied under pressure to the oil groove 25 through the oil passage 23 .

The lubricating oil pumped into the oil groove 25 passes through the oil guide hole 26 provided in the peripheral wall 15a of the holder chamber 15 to the fulcrum pin 18 of the governor weight 17 in the holder chamber 15.
The liquid is injected toward the fulcrum pin 18 and strongly lubricates the fulcrum pin 18 portion.

The lubricating oil injected from the oil guide hole 26 accumulates in the lower part of the pump casing 8, and then is returned into the engine body (not shown) through the lubricating oil return hole 28.

In the above embodiment, the oil hole 26 is opened toward the fulcrum pin 18 of the governor weight 17, but it may be opened toward the sliding surface between the weight holder 16 and the governor weight 17.

<Effects> Since the present invention is configured and operates as described above, it has the following effects.

That is, the fulcrum pin portion is strongly lubricated by the lubricating oil sprayed into the holder chamber from the oil guide hole that rotates together with the governor weight. As a result, the lubrication performance of the fulcrum pin of the governor weight can be improved, and the engine rotation control accuracy by the governor device can be improved. Moreover, since sufficient lubricating oil is supplied, there is less wear and durability is greatly improved.

In addition, the present invention has a simple structure in which, in addition to the existing lubricating device structure, an oil guide hole is inserted through the peripheral wall of the holder chamber toward the holder chamber. can be implemented.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional side view of a governor part attached to a diesel engine, FIG. 2 is a longitudinal sectional view of the main part, and FIG. FIG. 1 is a diagram corresponding to FIG. 1 of a main part of a conventional example. 8... Fixed wall, 12... Bearing hole, 13... Weight pedestal, 15... Holder chamber, 15a... Peripheral wall portion of 15, 16... Weight holder, 17... Governor weight, 18... Fulcrum pin , 23... oil path, 24... lubricating device, 25... oil groove, 26...
Channel hole.

Claims (1)

[Scope of utility model registration request] The weight holder 13 of the governor is rotatably supported in the bearing hole 12 of the fixed wall 8 of the engine and is interlocked with the crankshaft, and the weight holder 16 is fixed in the holder chamber 15 formed on one side of the weight holder 13. A governor weight 17 is pivoted to the weight holder 16 via a fulcrum pin 18 so as to be centrifugally swingable, and an oil groove 25 is formed in the fitting surface between the bearing hole 12 and the weight holder 13. 25 is connected to the oil passage 23 of the lubricating device 24, and the oil guide hole 26 for supplying lubricating oil to the fulcrum pin 18 of the governor weight 17 is connected to the holder chamber 15 of the weight pedestal 13. Peripheral wall portion 15a
An engine governor weight support device configured to penetrate from an oil groove 25 toward a holder chamber 15.