JPH041317Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a governor device with an engine stop device for a diesel engine, and provides one that enhances the response sensitivity of the governor and allows easy stopping operations.

<Prior art> The basic structure of a governor device with an engine stop device for a diesel engine, which is the subject of the present invention, is as follows:
6, the fuel injection pump 6 is controlled via the governor lever 4 and the transmission device 5 by the unbalanced force between the tension of the governor spring 2 of the governor device 1 of the diesel engine E and the governor force from the governor weight 3. The rack pin 7 is configured to be moved by a metered amount, and the transmission device 5 is slidably switched between the metering transmission position on the fuel increase side R and the fuel cut position on the fuel decrease side L by the sliding guide device 8 on the governor lever 4. The transmission tool 5 is pulled back to the metering transmission position by a return spring 10 having a spring constant smaller than that of the governor spring 2, and the transmission tool 5 is resisted against the return spring 10 by an engine stop tool 11 of an engine stop operation device 12. It is of a type that can be slid to switch to the fuel cut position.

This type of governor device has a large spring constant in order to stabilize the speed regulating function by sliding the transmission device 5, which moves independently of the governor lever 4, with the stop device 11 when stopping the engine E. The rack pin 7 can be easily pushed back to the fuel cut position without being subjected to the tension of the governor spring 2 which has been set.

The conventional technology of this type is
As shown in Publication No. 82339 (see FIGS. 5 and 6), a guide box 51 is fixed to the output portion 50 of the governor lever 4 with one guide pin 52, and the sliding guide device 8 is attached to the guide box 51. and a guide pin 52, a sliding guiding outer edge 53 is formed at one end of the transmission tool 5, and while the outer edge 53 of the transmission tool 5 is aligned with the sliding groove 54 made in the guide box 51, There is one in which a transmission tool 5 is slidably fitted into a box 51.

<Problems to be Solved by the Invention> However, the above-mentioned conventional technology requires a guide box 51 large enough to fit the transmission tool 5 inside, and the large guide box 51 is connected to the output of the tip of the governor lever 4. In order to fix it to the section 50,
There is a possibility that the overall weight of the governor lever 4 becomes heavy and the response sensitivity of the governor device becomes dull.

Further, when the engine E is stopped by the stopper 11, one end of the transmission tool 5 is received by one guide pin 52, and the outer edge 53 of the other end is received by the guide pin 52.
is fitted in the sliding groove 54 of the guide box 51, so that the outer edge 53 is caught on the edge of the sliding groove 54, and the transmission tool 5 is twisted diagonally with respect to the sliding direction, causing the governor lever 4 to There is a risk that the stopper 5 may become unable to slide relative to each other, and the stopper 5 may have to be operated strongly against the tension of the governor spring 2.

The technical problem of the present invention is to increase the response sensitivity of the governor device and to easily stop the engine using a stopper.

<Means for solving the problems> Means for achieving the above problems will be described below using drawings corresponding to embodiments.

That is, the present invention provides a governor device with an engine stop device for a diesel engine having the above-mentioned basic structure, in which the sliding guide device 8 has one sliding guide groove 14 and one sliding guide groove 2.
A sliding guide groove 14 is formed along the sliding direction of the transmission tool 5 in either one of the transmission tool 5 or the governor lever 4, and Both pin legs 16 of the two sliding guide headed pins 15 are fixed to one of the other members at an appropriate distance from each other in the sliding direction of the transmission 5, and the two sliding guide headed pins 15 are fixed to the other member. The sliding guide groove 14 is fitted over both pin bodies 17 of the pin 15 so as to be relatively slidable, and the groove peripheral wall 18 of the sliding guide groove 14 is fitted with two sliding guide heads. It is characterized in that both pin heads 20 of the attached pin 15 are configured to prevent it from coming off.

<Function> Since the linear surface of the sliding guide groove 14 smoothly slides on the arcuate surfaces of both pin bodies 17 of the two sliding guide headed pins 15 and does not get caught, the transmission is prevented. The tool 5 can slide smoothly against the governor lever 4 without being twisted.

Further, since either the pin 15 or the sliding guide groove 14 is only provided on the transmission device 5 or the governor lever 4, there is no need to provide a large guide box or the like as in the prior art. Both transmission tools 5 can be made lightweight.

<Effects of the invention> (1) Since both the governor lever and the transmission device can be made lightweight, the governor lever can better follow the unbalanced force between the governor force and the tension of the governor spring, and the response sensitivity of the governor device can be improved.

(2) Since the transmission gear is reliably oriented in the sliding direction and will not be twisted, when the transmission gear is stopped and moved using the stopper, the transmission gear will not be twisted and moved together with the governor lever as in the prior art. Therefore, the stopper can be easily stopped without having to operate the stopper against the large tension of the governor spring.

(3) The sliding guide device consists of one sliding guide groove and two sliding guide headed pins, and the guide pin allows the transmission tool to be slidably attached to the governor lever, simplifying the structure. It can be implemented at low cost.

(4) In the conventional technology, if the guide pin is strongly tightened, there is a risk that the guide box will deform and the transmission will not be able to slide when stopped.
In the present invention, the sliding guide groove is fitted over both pin bodies of the two sliding guide headed pins so that they can be slid relative to each other, so even if the headed pins are strongly tightened, the transmission tool will not move. It moves smoothly and there is no problem in stopping the engine using the stopper.

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

Figure 1 is a perspective view of the area around the governor lever transmission.
FIG. 2 is a longitudinal cross-sectional view of the main parts around the governor device of the diesel engine, and FIG. 3 is a cross-sectional plan view of the main parts of the governor device, in which the pump housing 21 is integrally formed in front of the crankcase of the engine E. The side opening of the pump housing 21 is covered with a timing transmission case 22, and the governor device 1 and the fuel injection pump 6 are incorporated into the pump housing 21.

The governor device 1 includes a governor weight 3, a governor lever 4 that receives the generated governor force GF via a governor sleeve 23 and is swung toward the fuel decreasing side L, and a governor that biases the governor lever 4 toward the fuel increasing side R. It is composed of a spring 2.

The governor lever 4 is composed of a main governor lever 4a and a sub-governor lever 4b, and both levers 4a and 4b are swingably supported on a fulcrum 24 fixed to the pump housing 21, and the elastic pressure provided on the main governor lever 4a is When the contact portion 25 and the receiving portion 26 provided on the sub-governor lever 4b come into contact with each other, the tension of the governor force GF and the governor spring 2 is transmitted.

A transmission device 5 that slides in the fuel increase/decrease direction is attached above the main governor lever 4a, and as shown in FIG. The control rack pin of the fuel injection pump 6 is connected between the output part 27 (which pushes only towards the fuel increase side) and the concave groove 28 of the transmission device 5 which abuts and supports only from the maximum fuel position (that is, pushes only towards the fuel increasing side R). Place 7.

The transmission device 5 is a lightweight plate-like body, and has the groove 28 that engages the control rack pin 7.
, a pressure receiving piece 29 that receives the locking pin 11a of the stopper 11 of the engine stop device 12, an elastic pressure receiving portion 31 that receives the high idle spring 30, which will be described later, and a slide portion 32 provided on the side of the locking pin 11a. It consists of

Furthermore, a sliding guide device 8 is formed by one long hole 14 for sliding guide made in the sliding portion 32 of the transmission tool 5 and two headed pins 15 for sliding guide fixed to the main governor lever 4a. However, the transmission tool 5 is configured to be slidable relative to the main governor lever 4a by the sliding guide device 8.

As shown in FIG. 4, the sliding guide headed pin 15 has a large diameter pin head 20 formed at one end;
Pin leg portion 16 with a smaller diameter formed at the other end
and a pin body 17 that is thinner than the pin head 20 and thicker than the pin leg 16 formed between them.

Legs 16 of two sliding guide headed pins 15
are crimped to the main governor lever 4a at appropriate intervals along the fuel increase/decrease direction, and have sliding guide elongated holes 1 formed in the slide portion 32 of the transmission device 5.
4 is slidably fitted onto the pin body 17, and the hole circumferential wall 18 of the sliding guide elongated hole 14 can be received by the main governor lever 4a and the pin head 20, and is configured to prevent it from coming off. Ru.

In this case, the sliding guide elongated hole 14 of the transmission tool 5
The inner periphery of the pin body 17 of the two sliding guiding headed pins 15 is brought into contact at two points with the outer periphery of the pin body 17. Be sure to be oriented in the direction.

In addition, a start spring 10 extends between one end of the sliding guide elongated hole 14 and the pump housing 21.
is suspended, and the spring constant of the start spring 10 is set smaller than the spring constant of the governor spring 2, so that the rack pin 7 is urged toward the fuel increase side R through the transmission device 5 with a tension lower than that of the governor spring 2. Ru.

Moreover, during operation of the engine E, the fuel increase side edge 33 of the groove 28 of the transmission gear 5 retreats from the output part 28 of the governor lever 4, so that the rack pin 7 is connected to the output part 28 of the governor lever 4 and the transmission gear. 5
is clamped and restrained between the fuel reduction side edge of the concave groove 28.

Further, the high idle spring 30 supported by the timing transmission case 22 receives the elastic pressure receiving portion 31 formed at the right end of the transmission tool 5, and together with the start spring 10, vibrations to the control rack are suppressed. As a result, stable rotation of the engine E is maintained.

On the other hand, there are a speed governor lever 34 rotatably supported on the outside of the pump housing 21, and a sub-governor lever 4.
The governor spring 2 is suspended across the upper end 35 of the main governor lever 4a, and the control rack pin 7 is configured to be elastically biased toward the fuel increase side R via the main governor lever 4a.

Incidentally, the fuel injection pump 6 is connected to the pump housing 2.
1, and is driven by a fuel injection camshaft 36 that is linked to the crankshaft.

The functions of the governor device 1 will be described below.

(1) When starting engine E, the sub-governor lever 4
b is received at the maximum fuel position by the fuel restriction screw 37, and the control rack pin 7 is drawn to the fuel increase side R by the start spring 10, the fuel discharge amount of the fuel injection pump 6 is increased, and the diesel engine E is Easy to start.

(2) When the engine E starts, the tension of the governor spring 2 of the governor device 1 and the governor weight 3
The governor lever 4 is controlled to swing due to the unbalanced force with the governor force GF, and the fuel injection pump 6
The fuel of the engine E is adjusted to keep the rotational speed of the engine E constant.

(3) When stopping the engine E, rotate the stopper 11 of the stopper in the direction of arrow A, push the pressure receiving piece 29 with the locking pin 11a, and move the concave groove 28 of the transmission device 5 to the fuel increasing side. The end edge 33 moves the control rack pin 7 to the reduction side L to move it to the no-fuel injection position.

At this time, the transmission tool 5 slides relative to the main governor lever 4a, so the tension of the governor spring 2 does not act as resistance when the transmission tool 5 moves, and only overcomes the weak tension of the start spring 10. It's good, so you can easily stop the operation.

Further, since the transmission device 5 is a lightweight plate-like member, the main governor lever 4a does not become heavy, and the response sensitivity of the governor device can be increased.

Furthermore, since the two sliding guide headed pins 15 guide the sliding guide elongated hole 14 formed in the transmission tool 5, the operation of the transmission tool 5 can be reliably directed in the direction of movement of the rack pin 7. There is no wobbling when stopping the machine.

As described above, the present invention is characterized in that the sliding guide device 8 is composed of one sliding guide groove 14 and two sliding guide headed pins 15, so that the sliding guide Instead of providing the groove 14 on the transmission tool 5 as in the above embodiment, it may be provided on the governor lever 4 side.

In this case, the sliding guide headed pin 15 is fixed to the transmission tool 5, and the transmission tool 5 integrated with the pin 15 engaged with the sliding guide groove 14 slides relative to the governor lever 4. I will do it.

Furthermore, the sliding guide groove 14 is not limited to a long hole as in the embodiment, and for example, as shown in the imaginary line B,
One end of the elongated hole provided in the slide portion 32 may be cut open to form a groove.

[Brief explanation of drawings]

1 to 4 show embodiments of the present invention.
The figure is a perspective view of the area around the governor lever transmission, Figure 2 is a vertical sectional view of the main part around the governor device of a diesel engine, Figure 3 is a cross-sectional plan view of the main part of the same governor device, and Figure 4 is for the sliding guide. 5 is a view corresponding to FIG. 1 showing the prior art, and FIG. 6 is a view equivalent to FIG. 2 showing the prior art. 1... Governor device, 2... Governor spring,
4... Governor lever, 5... Transmission gear, 6... Fuel injection pump, 7... Control rack pin, 8
...Sliding guide device, 10...Return spring, 11...
Engine stop tool, 12...Engine stop device, 1
4...Sliding guide groove, 15...Sliding guide headed pin, 16...Pin leg, 17...Pin body, 1
8... Groove peripheral wall portion of 14, 20... Pin head, E...
...diesel engine.

Claims (1)

[Claims for Utility Model Registration] An unbalanced force between the tension of the governor spring 2 of the governor device 1 of the diesel engine E and the governor force from the governor weight 3 causes the control rack pin of the fuel injection pump 6 to be connected via the governor lever 4 and the transmission device 5. 7 is configured to move meteringly,
The transmission tool 5 is slidably supported on the governor lever 4 by switching between a metering transmission position on the fuel increase side R and a fuel cut position on the fuel decrease side L by the sliding guide device 8, and A diesel engine configured to be able to slide while being pulled back to the metering transmission position by a return spring 10 with a small spring constant and switching the transmission tool 5 to the fuel cut position against the return spring 10 by the engine stop tool 11 of the engine stop operation device 12. In a governor device with an engine stop device for an engine, the sliding guide device 8 has one sliding guide groove 14 and two sliding guide grooves 14 and 2.
A sliding guide groove 14 is formed along the sliding direction of the transmission tool 5 in either one of the transmission tool 5 or the governor lever 4, and Both pin legs 16 of the two sliding guide headed pins 15 are fixed to one of the other members at an appropriate distance from each other in the sliding direction of the transmission 5, and the two sliding guide headed pins 15 are fixed to the other member. The sliding guide groove 14 is fitted over both pin bodies 17 of the pin 15 so as to be relatively slidable, and the groove peripheral wall 18 of the sliding guide groove 14 is fitted with two sliding guide heads. A governor device with an engine stop device for a diesel engine, characterized in that a pin 15 with both pin heads 20 is configured to prevent it from coming off.