JPH0544522Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an adjustment mechanism for an engine speed governor that can easily and accurately control the speed of the engine speed governor.

[Prior art]

Conventionally, when automatically controlling the engine speed to a set value, the set speed signal from the accelerator sensor and the engine speed signal from the engine speed sensor are input to an electronic controller and compared, and then the An actuation signal corresponding to the comparison result is output to a regulator actuator, and the regulator actuator drives a governor lever.

Incidentally, although the stroke of the rod that is the output part of the regulator actuator is constant, the mounting angle and stroke angle of the governor lever differ depending on the model. Furthermore, even if the mechanism is the same, there are slight differences due to manufacturing errors, so it is necessary to adjust the position of the ball joint on the governor lever side to correspond to the stroke of the regulator actuator.

However, the conventional adjustment mechanism has a problem in that it is difficult to adjust the position of the ball joint and requires a great deal of labor and time.

[Purpose of invention]

The present invention solves the above problems and provides an adjustment mechanism for an engine speed governor that not only allows easy adjustment of the position of the ball joint on the governor lever side, but also has a relatively simple and compact mechanism. The purpose is to

[Structure of the idea]

The present invention which achieves the above objects includes a first lever provided on the governor lever via a support so as to be slidable in the longitudinal direction thereof, and a first lever provided on the support to move the first lever in the longitudinal direction of the governor lever. a guide pin provided on the cabana lever that also serves to fix the first lever; and a second lever rotatably attached to the first lever.
The adjustment mechanism of the engine adjustment device includes a lever and an adjustment bolt provided on the first lever to adjust the attachment angle of the second lever.

〔Example〕

Figure 5 (arrow F) shows the electronic control mechanism of the internal combustion engine.
is attached to the engine 11 and driven by the fuel pump 12.
3 is installed, and the lever 14 of the governor 13
A regulator actuator 15 is connected to the
A governor 13 is controlled by a regulator actuator 15. An accelerator sensor 16 is integrally fixed to the regulator actuator 15, and a remote control cable 19 whose one end is connected to a remote control 18 is connected to an accelerator lever 17 of the accelerator sensor 16. The remote control 18 also includes a remote control cable 2.
A switching lever 21 is connected via 0.

On the other hand, an engine rotation speed sensor 22 is provided near the drive shaft of the fuel pump 12 to detect the rotation of the drive shaft as a pulse signal, and outputs an engine rotation speed signal to an electronic controller 23. . The integrated regulator actuator 15 and accelerator sensor 16 are provided with a lever position sensor 24 that detects the rotational position of the accelerator lever 17 of the accelerator sensor 16, that is, the engine rotation speed setting position. 23 to output a set rotational speed signal. The electronic controller 23 compares the engine speed signal from the engine speed sensor 22 with the set speed signal from the lever position sensor 24, and sends an activation signal to the regulator actuator 15 to control the engine to the set speed. It has a function to output. Further, an electronic controller 23 is electrically connected to the trawl valve actuator 25 to control the trawl valve actuator 25, and a clutch engagement sensor 27 and a trawl valve position sensor 28 are connected to the electronic controller 23 to transmit predetermined signals. It is designed to be input to an electronic controller 23.

Note that a clutch housing 30 containing a clutch is disposed between the engine 11 and the output shaft 29.

As shown in FIG. 4, which is an enlarged view of the regulator actuator 15, the regulator actuator 15 is fixed to a bracket 31 fixed to the end surface of the crank housing 30 in a posture protruding forward. The electronic controller 23 (fifth
Motor 3 driven by an actuation signal from
It has 2. Regulator actuator 1
A rod 33, which is the output part of the rod 5, protrudes generally forward and is driven by a motor 32 in its longitudinal direction (directions of arrows X and X').

An accelerator sensor 16 is fixed to the front part of the regulator actuator 15. The accelerator lever 17 of the accelerator sensor 16 is the accelerator shaft 17
The accelerator lever 17 is designed to be able to rotate in a plane perpendicular to the plane of the paper with A as the center, and a remote control cable 1 is connected to the tip of the accelerator lever 17 via a ball joint 36.
9 are connected at one end.

Further, the accelerator sensor 16 has a rotation speed limiting bolt 37 whose protrusion is adjustable, so that rotation of the accelerator lever 17 is limited within a predetermined angle.

On the other hand, at the lower part of the governor lever 14 which can rotate about a fulcrum B, a speed regulating unit U as described below is disposed. That is, governor lever 1
4, a first lever 81 is fixed by two guide pins 60 via a support 71, as shown in FIG. Each guide pin 60 is composed of a head 62 having a guide surface 61 and a shaft 63, and the tip of the shaft 63 is a threaded portion 64 into which a nut 65 is screwed. The shaft portion 63 of the guide pin 60 passes through a through hole 14A provided in the governor lever 14 and a through hole 72 provided in the support 71.

As shown in FIG.
The adjustment screw 75 is inserted into the hole 74 of the head 73 and is screwed into the screw hole 83 provided at the top of the first lever 81 . First lever 8
1 has a slit 82, as shown in FIG. 1, and the guide surface 61 of the guide pin 60 is located in this slit 82. Therefore, when the two guide pins 60 are loosened and the adjusting screw 75 is turned clockwise or counterclockwise, the first lever 81
moves in the longitudinal direction of the governor lever 14 along the guide surface 61 of the guide pin 60.

Further, as shown in FIG. 3, the front and rear sides of the support 71 are bent at right angles to the side where the second lever 91 is disposed to form an arm portion 84. Adjustment bolt 8 extending in the direction
5 and 86 are screwed together. Adjustment bolts 85, 86
The mutually facing ends of the respective second levers 9
It is in contact with both the front and rear sides of 1. Second lever 91
is rotatably directed to the lower part of the first lever 81 by a pin 95. The center of rotation is the fulcrum C in FIG. That is, the rotational posture of the second lever 91 about the fulcrum C, that is, the mounting angle, can be adjusted by changing the screwing state of the adjustment bolts 85 and 86.

Since the pivot point C of the governor lever 14, the axes of the support 71 and the first lever 81, and the fulcrum C of the second lever 91 are located on one axis D, as shown in FIG. It becomes structurally more compact and also improves adjustment accuracy.

A ball joint 49 is attached to the top of the second lever 91. As shown in FIG. 4, the front end of a shaft 50 extending in the X direction is attached to the ball joint 49.
The rear end of the shaft 50 has a ball joint 51.
It is removably attached to the rod 33 of the regulator actuator 15 via.

The following operation will be explained. Since it is necessary to make an adjustment between the stroke of the rod 33, which is the output part of the regulator actuator 15, and the rotational position of the governor lever 14, the adjustment unit U performs the adjustment.

After loosening nuts 85' and 86', adjust bolt 8.
By rotating the levers 5 and 86, the second lever 91
is rotated about the fulcrum C, and thereby the second lever 91 is rotated about the fulcrum C. Further, by loosening the two guide pins 60 and rotating the adjustment screw 75 clockwise or counterclockwise, the first lever 81 and the second lever 91 can be adjusted.
can be moved in the longitudinal direction of the governor lever 14.

Therefore, the adjustment bolts 85, 86 and the adjustment screw 7
5, the ball joint 4 of the shaft 50 can be adjusted on the vertical and longitudinal planes.
The fulcrum position E of 9 can be easily and freely changed.

It goes without saying that after the adjustment, the nut 65 of the guide pin 60 and the nuts 85', 86' of the adjusting bolts 85, 86 are tightened.

[Effect of idea]

As described above, the present invention includes a first lever provided on the governor lever via a support so as to be slidable in the longitudinal direction thereof, and a first lever provided on the support and slidable in the longitudinal direction of the governor lever. a guide pin provided on the governor lever that also serves to fix the first lever; a second lever rotatably pivoted on the first lever; 2
Since it consists of an adjustment bolt that adjusts the mounting angle of the lever, it is not only much easier to adjust the position of the ball joint on the governor lever side than with conventional models, but the mechanism itself is also relatively simple. It has a compact structure.

[Brief explanation of the drawing]

Fig. 1 is a front view of an engine speed governor adjustment device according to the present invention, Fig. 2 is a side view including a partial cross section, Fig. 3 is a plan view showing the main parts, and Fig. 4 is an engine speed governor adjustment device. FIG. 5, a partial front view of the speed device, is a schematic diagram of the overall configuration. 14...Governor lever, 60...Guide pin,
71...Support, 75...Adjustment screw, 81...
First lever, 85, 86...adjustment bolt, 91...
...Second lever.

Claims (1)

[Scope of utility model registration request] a first lever provided on the governor lever via a support so as to be slidable in the longitudinal direction thereof; an adjustment screw provided on the support for moving the first lever in the longitudinal direction of the governor lever; a guide pin that also serves to fix the first lever; a second lever rotatably attached to the first lever; and an adjustment bolt provided on the first lever that adjusts the mounting angle of the second lever; An adjustment mechanism for the engine speed governor consisting of: