JPH059466Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an engine governor operating device for a generator driven by an engine.

[Conventional technology]

Conventionally, as a governor operating device for controlling the engine speed of an engine-driven generator, a device as shown in FIG. 10 has often been adopted.

In the figure, a governor lever 2 is fixed to a governor 1 mounted on one side of an engine (not shown), and when the governor lever 2 rotates clockwise in the figure using the fixed point as a fulcrum, the engine is rotated. The engine speed is increased, and conversely, when the engine rotates counterclockwise in the figure, the engine is decelerated.

Rotation of the governor lever 2 is stopped by a driving side stopper 3 and a stopping side stopper 4. Also,
The control panel 5 includes a control knob 6.
A movable member 8 is screwed to a feed screw 7 formed integrally with the control knob 6, and an end of a control lever 9 attached to the movable member 8 and an end of the governor lever 2 are connected to each other. are connected by a connecting rod 10.

Therefore, when the driver rotates the control knob 6 clockwise, the governor lever 2 moves clockwise in the figure, maintaining the rated rotation at the position of the driving side stopper 3.

When the engine is to be stopped, the control knob 6 is rotated counterclockwise, the governor lever 2 is rotated counterclockwise in the figure, and the governor lever 2 is held at the stop side stopper 4 position.

Furthermore, when warming up the engine (idling), turn the control knob 6 clockwise several times to set it to an appropriate position.

In this way, the rotation of the control knob 6 causes the movable member 8 to move up and down in the figure using the feed screw 7, and this movement is controlled by the control lever 9 and the connecting rod 10.
The signal was transmitted to the governor lever 2 via the controller, and the governor 1 was controlled.

[The problem that the idea aims to solve]

As described above, the conventional governor operating device cannot avoid the following drawbacks.

(b) Rotating the control knob requires detailed time and effort, and the speed and fluidity necessary for operating the generator are lost.

(b) Since the control knob and the governor lever are directly connected, the stopper of the governor lever must be forced in, and as a result, the link mechanism and movable members such as the governor lever are easily damaged.

(c) The control knob can be stopped at any position, which results in stopping the governor at an inappropriate position, resulting in warm-up operation (idling operation)
In many cases, the rotational speed of the engine was set close to the rated rotational speed, and the rated operation was often performed below the rated rotational speed.

Therefore, the former caused the engine to seize, and the latter caused the generator to overload.

Furthermore, if the device is used at a rotation speed below the rated speed, there is a risk that torsional vibration of the rotating shaft or vibration of the device itself may be connected near the resonance point for a long period of time, leading to trouble.

(d) Since there is no play between the control knob and the link mechanism such as the governor lever, it is extremely difficult to assemble the operating device in the case of mass-produced machines.
Furthermore, it has been difficult to use the governor operating device as a common component for all models.

This invention solves these problems and allows the engine-driven generator to be switched between stop, idling, and rated operation quickly and smoothly with a single touch operation of the operating handle, and is stable in each position. To provide a general-purpose governor operating device that can maintain the rotational speed and prevent deviation from a predetermined rotational speed, and can be commonly used for all types of engines.

[Means for solving problems]

In order to solve the above problems, this invention rotates a governor lever, one end of which is fixed to a connecting rod, with an operating handle using a part of the governor as a fulcrum, and inserts the operating handle into a guide groove drilled in the control panel. In a governor operating device for an engine-driven generator that slides along the shaft and locks at a predetermined position, one side is fixed to the other end of the connecting rod, and approximately in the center is pivotably supported on the machine frame by a support pin. The control lever has a spring support plate formed on the other side, the operation plate has a bent spring board on the top and bottom and is rotatably supported on the machine frame by the same support pin as the control lever, and the control lever spring. A spring shaft is inserted between the receiving plate and the upper and lower spring boards of the operation plate with each control spring loosely inserted, and multiple holes for inserting the dowel pins are formed in the spring shaft, and by changing the position of the dowel pin, the engine The rotation speed can now be fine-tuned.

[Effect]

When the operation handle is operated one movement from the locked position to the next desired position,
The operating plate rotates, and the control lever follows the rotation while the impact is softened by the elasticity of the control spring to operate the governor.

The control spring resiliently holds the control lever in a position corresponding to the desired position of the operating handle.

By changing only the parts of the control lever, the control lever can be applied to both models in which the engine governor mechanism rotates counterclockwise to achieve high speed, and in which the engine governor mechanism rotates clockwise to achieve high speed. be. Further, by inserting the dowel pin into the hole for inserting the dowel pin in the spring shaft, the spring pressure of the two control springs can be easily adjusted from the outside, and the engine speed can be finely adjusted.

〔Example〕

Hereinafter, one embodiment of this invention will be described in detail based on the drawings.

FIG. 1 is a perspective view of a governor operating device for an engine-driven generator implementing this invention, and FIG. 2A is a front view similarly showing the idling position.

In FIGS. 1 and 2A, the governor operating device has a proximal end connected to the governor 1 via a connecting rod 10 and a governor lever 2, a distal end bent to form a spring receiving plate 17, and a support pin 14. Machine frame 5
A control lever 9 in the shape of a rectangular plate is pivotably supported on the control lever 9, and the upper and lower pieces of the control lever 9 are pivoted on the same support pin 14, and the protruding upper and lower pieces are bent. Operation plate 1 formed with
6, two control springs 15a and 15b interposed between the spring receiving plate 17 of the control lever 9 and the spring substrates 16a and 16b of the operation plate 16, and the operation plate 16 connected to the first connecting fork 18. and the operating handle 11 rotated via the second connecting fork 21, the machine frame 5b to which the support piston 14 is attached, and the guide groove 5a of the operating handle 11.
The control panel 5 is generally composed of a bottom plate 5c having a hole therein, and a control panel 5 formed in an L-shaped cross section.

More specifically, as shown in FIG. The notch for use is cut out. When the operating handle 11 is slid along the guide groove 5a, the operating plate 16 connected to the operating handle 11 rotates about the support pin 14, as will be described in detail later.

As mentioned above, spring boards 16a and 16b are bent perpendicularly to the plate surface on the upper and lower sides of the operation plate 16, and the control lever 9 is shaped like a rectangular plate.
Two control springs 15a and 15b are interposed between the upper and lower surfaces of the spring receiving plate 17, which is erected on one side.

The control lever 9 has a rectangular plate-shaped central portion pivotally supported by the support pin 14 of the machine frame 5b, so when the operation plate 16 rotates, the two control springs 1
The control lever 9 also rotates following the same angle with a margin for the elasticity of the levers 5a and 15b.

As shown in FIGS. 2A and 3, the operating handle 11 is disposed so as to pass through the center of the support pin 14, and is welded to the base 18b of the first connecting fork 18. The first connecting fork 1
8 is connected to a second connecting fork 21 by a pin 20, and this second connecting fork 21 is welded to the operating plate 16.

Further, the first connecting fork 18 has a guide groove 5a.
It is attached so that it can slide integrally with the operation plate 16 in the sliding direction, and can also slide independently in the locking direction.

A support spring 18a is wound around the pin 20, and the support spring 18a has one end connected to the operating plate 16 and the other end connected to the base 18 of the first connecting fork 18.
b, respectively, so as to be biased in the expansion direction, and bias the first connecting fork 18 in the locking direction, that is, toward the locking notch press-fit side.

Further, the control lever 9 has a plurality of mounting holes 9b for connecting the connecting rod 10 to the governor lever 2, and the length of the link mechanism such as the governor lever 2 can be adjusted by changing the position of the holes.

The position of this mounting hole 9b is as shown in FIG.
The one on the same side as the spring receiving plate 17 may be used, and by changing only the parts of the control lever 9, the engine governor mechanism can be changed to the model shown in FIG. The engine speed is increased when the governor lever 2 is rotated clockwise in the figure, and the engine is decelerated when the governor lever 2 is rotated clockwise in the figure. (Clockwise rotation slows down the engine.) Can also be used.

The two control springs 15a and 15b are coil-type compression springs wound around a spring shaft 17a that passes through the spring receiving plate 17, and have approximately equal elasticity. 16a,1
6b is biased to maintain the intermediate position.

As shown in FIG. 5, a suitable number of holes are provided through the spring shaft 17a, and a knock pin 22 is inserted into the holes.
By inserting the control lever 9, the spring pressure of the control spring 15a on the upper edge side or the control spring 15b on the lower edge side is changed, and the position of the control lever 9 is moved up and down, thereby finely adjusting the engine rotation speed.

A rated rotation adjustment stopper 19 is attached to the control panel 5 so that its height can be adjusted. Governor lever 2 is the driver side stopper 3
The required rotation speed is 1500rpm for the generator to generate electricity at the specified maximum speed, for example 50Hz.
It is formed so that it can hold.

When generating power at 60Hz, the required rotation speed is adjusted by adjusting the rated rotation adjustment stopper 19 as shown in the chain line in FIG.
It is designed to provide 1800rpm.

Hereinafter, the operations of the embodiments actually used will be explained based on FIG. 2 and FIGS. 6 to 9.

(Idling state) FIG. 2 is a diagram when the governor operating device of the engine-driven generator is in an idling (warming-up) state.

In FIG. 2, the governor lever 2 is located at an intermediate position between the driving side stopper 3 and the stopping side stopper 4.
The control lever 9 and the operation plate 16 are connected to the machine frame 5b.
The operating handles 11 are pushed down by the support springs 18a and disposed in the locking notches B at intermediate positions of the guide grooves 5a of the control panel 5.

The control springs 15a and 15b maintain an intermediate position where both springs are pressed together, and the generator rotates approximately half of the rated rotation (1500 rpm in the case of 50 Hz).
The engine is idling at a rotation speed of 700 rpm).

As described above, the control springs 15a and 15b can be easily adjusted from the outside by inserting the knock pin 22 into the spring shaft 17a, without changing the springs, and the idling speed can also be finely adjusted. can.

(Status one step before being held in the operating state) Figure 6 shows the state one step before being held in the operating state when moving the governor operating device of the engine-driven generator from the idling state to the rated rotation. It is a diagram.

At this time, the governor lever 2 is placed in a position above the intermediate position on the driving side stopper 3 side, with the control lever 9 and the operation plate 16 parallel to each other, and the machine frame 5b.
The operation handle 11 is rotated counterclockwise to the inclined position, and the operating handle 11 slides to a point C' near the locking notch C point in the operating state on the right side of the intermediate position of the guide groove 5a of the control panel 5. and are arranged respectively.

The control springs 15a and 15b maintain the intermediate position where both springs are pressed against each other, and the control lever 9
The spring receiving plate 17 is in contact with a rated rotation adjustment stopper 19 provided on the machine frame 5b. The rated rotation adjustment stopper 19 adjusts the engine rotation speed to 50Hz.
It is adjusted to the position of 1500rpm at 60Hz and 1800rpm at 60Hz.

(Operating state) FIG. 7 is a diagram when the state shown in FIG. 6 is fixed to the locking notch point C to maintain the operating state.

The governor lever 2 is located in front of the driver side stopper 3 (leaving an adjustment range of 60Hz 1800rpm, and
Even if it is set to 1800 rpm, if it is the rated rotation speed, set it with a margin of ±5%.

Therefore, the driving side stopper 3 is considered to be a high speed limit point dangerous stopper. ) at the position of control spring 15
It is elastically held by a and 15b with a fluctuation range of about ±5%. At this time, the control lever 9 does not move because the spring receiving plate 17 is in contact with the rated rotation adjustment stopper 19, and when the operating handle 11 is moved further to the right, only the operating plate 16 rotates counterclockwise and moves upward. The control spring 15a on the edge side is compressed, and the control spring 15b on the lower edge side is expanded to hold the operating handle 11 at the locking notch C point in the operating state, and the rated operation (1500 rpm in the case of 50 Hz,
(1800rpm for 60Hz).

Note that even in the operating state, the rotation speed can be finely adjusted by adjusting the spring pressure of the control springs 15a, 15b, as described in the idling state.

(Status one step before being held in the stopped state) Figure 8 is a diagram showing the state one step before being held in the stopped state when moving the governor operating device of the engine-driven generator from the operating state to the stopped state. be.

At this time, the governor lever 2 is moved to the stop side stopper 4.
The control lever 9 and the operation plate 16 are parallel to each other and are rotated clockwise and inclined relative to the machine frame 5b, and the operation handle 11 is in contact with the
are slidably disposed at point A' near point A of the stop locking notch on the left side of the intermediate position of the guide groove 5a.

The control springs 15a and 15b maintain an intermediate position where both springs are pressed together.

(Stopped state) FIG. 9 is a diagram when the state shown in FIG. 8 is fixed to the locking notch point A to hold the stopped state.

The governor lever 2 is elastically held at the position where it abuts the stop-side stopper 4 via control springs 15a and 15b, and continues to be pulled until the engine stops.

The control lever 9 does not move because it is fixed by the stopper 4 on the stop side of the governor, and when the operating handle 11 is moved further to the left, the operating plate 1
Only control spring 6 rotates clockwise and the control spring 1 on the lower edge side
5b is compressed, and the control spring 15 on the upper edge side
a extends to hold the operating handle 11 at the stop locking notch point A.

(Others) If the operating handle 11 is not locked,
If the governor side has a structure that urges the governor lever 2 to the idling position, the control lever 9 will be rotated to the corresponding position and stabilized, and if the setting is accurate, the operating handle 11 will also automatically move. It will be slid to the idling position B and locked, and the warm-up operation will be maintained. Therefore, accidents that occur due to mismanagement and operation without noticing an unexpected rotation speed can be prevented.

[Effect of idea]

As explained above, according to this invention, the desired operating state can be quickly and smoothly changed by one-touch operation of the operating handle, and at a predetermined locking position, it is elastically held and stabilized, preventing undesired deviant operation. can do.

Furthermore, by replacing the control lever parts, it can be applied to engines with any governor mechanism, and the spring pressure of the control spring can be easily adjusted from the outside, allowing fine adjustment of the engine speed.

Furthermore, since it has a play mechanism using a control spring, it is set with an elastic effect at the rated position and overload, providing a margin for rotational speed, and the connection is mechanically made with play, making assembly easier. This has the effect of making it easier and allowing for common use.

[Brief explanation of the drawing]

Figure 1 is a perspective view of one embodiment of this invention, Figure 2 (a) is a front view showing the idling state, (b) is a bottom view illustrating the position of the operating handle with respect to the guide groove of the control panel, and Figure 3 is a diagram of the invention. A bottom view of one embodiment, FIG. Figure 6A is a front view of the main parts to explain the dowel pin and control spring inserted into the spring shaft, Figure 6B is a sectional view taken along A-A of Figure 6, and Figure 6A is a front view of the state just before being held in the operating state. , B is a bottom view that also explains the position of the operating handle, FIG. 7 A is a front view held in the operating state, B is a bottom view that also explains the position of the operating handle, and FIG. A front view of the state just before the operation is performed, B is a bottom view that also explains the position of the operation handle,
Figure 9A is a front view held in a stopped state, a bottom view explaining the position of the operating handle in the same way as Figure 9B, and Figure 9B.
Figure 0 is a front view of a conventional example. DESCRIPTION OF SYMBOLS 1... Governor, 2... Governor lever, 5... Control panel, 5a... Guide groove, 9... Control lever, 10... Connection rod, 11... Operation handle, 14... Support pin, 15a, 15b... …
Control spring, 16... Operation plate, 16a, 16
b... Spring board, 17... Spring receiving plate, 18...
First connecting fork, 19... Rated rotation adjustment stopper, 20... Pin, 21... Second connecting fork,
22... Notsukupin.

Claims (1)

[Claim for Utility Model Registration] A governor lever, one end of which is fixed to a connecting rod, is rotated by an operating handle using a part of the governor as a fulcrum, and the operating handle is slid along a guide groove drilled in the control panel. In a governor operating device for an engine-driven generator that is fixed at a predetermined position, one side is fixed to the other end of the connecting rod, approximately the center is pivotally supported to the machine frame by a support pin, and the other side is pivoted to the machine frame with a support pin. The control lever has a spring support plate formed thereon, the operation plate has bent spring boards on the top and bottom and is rotatably supported on the machine frame by the same support pin as the control lever, and the spring support plate of the control lever and the operation plate. A spring shaft is inserted between the upper and lower spring boards of the plate with each control spring loosely inserted, and a plurality of holes for inserting knock pins are formed through the spring shaft, and the engine rotation speed can be adjusted by changing the position of the knock pin. A governor operating device for an engine-driven generator characterized by the ability to make fine adjustments.