JP4495582B2 - Governor lever adjustment mechanism of governor device - Google Patents

Description

  The present invention relates to a governor lever adjusting mechanism of a governor device. More specifically, the present invention relates to a mechanism for adjusting a side gap of a governor lever in a mechanical governor of a diesel engine.

Conventionally, a governor mechanism that is connected to a fuel injection pump to adjust the fuel injection amount is known. The mechanical governor mechanically adjusts the fuel injection amount in accordance with the engine rotation region, and is known to control the fuel injection amount by restricting the rotation of the lever. In the mechanical governor device, since the internal structure is complicated, it is necessary to assemble the members with high accuracy in order to prevent hunting or the like of the internal members. For example, in a reverse angle governor mechanism with a tension lever, governor lever, and angle lever, the gap between the angle lever and the tension lever is reduced in order to stabilize the governor function (such as suppressing vibrations under no load). Therefore, the gap between the levers mounted on the tension lever is configured to be filled with shims. In addition, in order to prevent hunting in the governor device, a governor lever is connected to the link of the fuel injection pump via a receiving member. This is configured to absorb backlash by a receiving member that is in surface connection with one end of the governor lever (see Patent Document 1).
Japanese Utility Model Publication No. 6-1745

  However, when using a conventional structure in which shims are packed in the gaps between the levers, it is necessary to assemble the case into the case by inserting the shaft while holding the shims between the levers. It requires a lot of effort. And even in the technique described in Patent Document 1, vibration is absorbed at one end of the governor lever, and it is impossible to suppress rattling in the entire governor lever.

  The problems of the present invention are as described above, and means for solving the problems are as follows.

In claim 1, the casing (2) has a tension lever (3) pivotally supported by a rotating shaft (4), and at the lower part of the tension lever (3) by an Anglich shaft (5). In the governor lever adjusting mechanism of the governor device (1) in which the angle lever (6) and the governor lever (7) are pivotally supported, a stay (30) is provided between the tension lever (3) and the governor lever (7). One end of the stay (30) is attached and fixed to a surface parallel to the rotation shaft (4) of the tension lever (3) on the rear surface of the tension lever (3). The other end of the governor lever 7 abuts the side of the governor lever 7 facing the tension lever 3 in the pushing direction .

The governor lever adjusting mechanism of the governor device according to claim 1, wherein the fixing portion of the stay (30) is provided with a long hole (30c) which is long in the left-right direction, and a bolt ( 30b) is inserted and fixed, the distance between the tip of the stay (30) and the side surface of the tension lever (3) is set, and the angle lever (6) and the governor lever (7) are positioned within this distance. And the distance between the side gaps of the tension lever (3) and the governor lever (7) is adjusted .

According to a third aspect of the present invention, in the governor lever adjusting mechanism of the governor device according to the first aspect, the other end of the stay (30) is bent and extended in the front direction of the tension lever (3) .

According to a fourth aspect of the present invention, in the governor lever adjusting mechanism of the governor device according to the third aspect of the present invention, the stay (30) is configured such that a portion bent forward is curved in a plan view, and the convex portion of the curved portion is formed. The side facing the tension lever (3) of the governor lever (7) is brought into contact with the pushing direction .

As described in claim 1, the casing (2) has a tension lever (3) pivotally supported by a rotating shaft (4), and an Anglich shaft (5) is provided below the tension lever (3). ), In the governor lever adjusting mechanism of the governor device (1) in which the angle lever (6) and the governor lever (7) are pivotally supported, the stay (3) between the tension lever (3) and the governor lever (7) 30), and one end of the stay (30) is attached and fixed to a surface parallel to the rotation shaft (4) of the tension lever (3) on the rear surface of the tension lever (3). the other end of (30) is abutted against the pushing direction of the side facing the tension lever (3) of the governor lever (7), so constituting a governor lever adjustment mechanism of the governor, the governor with a simple structure Hunting in governor can be suppressed by constituting the bar of the adjustment mechanism.

According to a second aspect of the present invention, in the governor lever adjusting mechanism of the governor device according to the first aspect, the fixing portion of the stay (30) is provided with a long hole (30c) that is long in the left-right direction, and the long hole (30c) The bolt (30b) is inserted and fixed, the distance between the tip of the stay (30) and the side surface of the tension lever (3) is set, and the angle lever (6) and the governor lever (7) are set within this distance. The governor lever adjustment mechanism of the governor device is configured to adjust the gap of the side gap between the tension lever (3) and the governor lever (7). Therefore , the governor lever adjustment mechanism is configured with a simple configuration. Hunting in the governor device can be suppressed.
In addition, an adjustment mechanism for the abutting member can be provided on the outside of the governor lever to easily adjust the distance between the tension lever and the governor lever.

The governor lever adjusting mechanism of the governor device according to claim 1, wherein the other end of the stay (30) is bent and extended in the front direction of the tension lever (3). Since it can be used in the state where there is no overhang from the governor lever of the mechanism, it is easy to divert the conventional configuration, and the cost for realization can be reduced.

According to a fourth aspect of the present invention, in the governor lever adjusting mechanism of the governor device according to the third aspect of the present invention, the stay (30) is configured such that a portion bent forward is curved in a plan view, and the convex portion of the curved portion is formed. Since the portion is brought into contact with the direction in which the side of the governor lever (7) facing the tension lever (3) is pushed, high adjustment accuracy can be obtained by bringing the convex portion into contact .

  In the governor device, the governor lever side gap adjusting mechanism is configured by regulating the position of the governor lever with respect to the tension lever that is positioned.

  The overall configuration of the governor device 1 will be described with reference to the drawings.

  FIG. 1 is a partial side sectional view showing the configuration of the governor device.

  FIG. 2 is a partial cross-sectional view of the rear surface of the governor device.

  The amount of fuel injected by the fuel injection pump is mainly controlled by the amount of rotation of the spring lever shaft 12. The governor device 1 is interposed between the spring lever shaft 12 and the fuel injection pump, and adjusts the fuel injection amount according to the engine speed and the like. The governor device 1 is configured by accommodating a governor weight 8, a slide sleeve 9, and a governor lever assembly 20 in a casing 2. The governor lever assembly 20 includes a tension lever 3, an angle lever 6, and a governor lever 7. The tension lever 3 is pivotally supported at a substantially central portion by a first rotating shaft 4 disposed in the left-right direction in the casing 2. The tension lever 3 has a three-pronged shape, and the end portions extend in three directions, ie, forward, downward, and upward. A spring lever 11 is connected to the front end of the tension lever 3 via a spring 10, an upper end is a contact portion 14, and an angle lever 6 and a governor lever 7 are attached to the lower portion. The rear end of the control lever 13 is connected to the upper end of the governor lever 7, and the fuel injection amount is controlled by the control lever 13. The Anglich lever 6 and the governor lever 7 are attached to the tension lever 3 so as to be tiltable by the Anglich shaft 5. The Anglich shaft 5 is a mounting pin for the governor lever 7 and the Anglich lever 6 and is arranged in parallel with the first rotating shaft 4 so that the Anglich lever 6 and the governor lever 7 can tilt in the front-rear direction. In addition, the Anglich lever 6 and the governor lever 7 are connected to each other at a lower end portion by a coupling spring 7b, and are biased in a direction in which the lower end portions of the Anglich lever 6 and the governor lever 7 approach each other.

  In FIG. 1, when the spring lever shaft 12 is rotated clockwise with respect to the paper surface, the tension lever 3 is rotated counterclockwise via the spring 10 connected to the spring lever 11, and the governor lever is rotated. 7 moves the control lever 13 backward. This increases the amount of fuel supplied to the engine. When the engine speed increases, the governor weight 8 pushes the slide sleeve 9 backward by centrifugal force, and pushes the Anglich lever 6 clockwise. As a result, the tension lever 3 is urged clockwise and tilted clockwise without changing the position of the spring lever 11. Then, the control lever 13 moves forward via the governor lever 7, and the amount of fuel supplied to the engine decreases.

  Next, the configuration of the governor lever assembly 20 will be described in more detail. 3 is an overall side view of the governor lever, FIG. 4 is a partial cross-sectional view of the rear surface of the governor lever, FIG. 5 is a side view showing the assembly configuration of the governor lever, and FIG. 6 is a perspective view showing the assembly configuration. . The governor lever assembly 20 is configured by assembling the angle lever 6 on the tension lever 3 and assembling the governor lever 7 on the angle lever 6. That is, the governor lever assembly 20 is configured from the inside in the order of the tension lever 3, the angle lever 6, and the governor lever 7. A sleeve 3c is disposed in the center portion of the tension lever 3 in the left-right direction (paper surface direction in FIG. 3), and the first rotation shaft 4 is inserted into the sleeve 3c of the tension lever 3. An Anglich shaft holding portion 21 is attached to the lower end of the tension lever 3, and the tension lever 3 and the Anglich shaft holding portion 21 are connected by a fixing pin 22. The Anglich shaft holding portion 21 is configured to insert and hold the Anglich shaft 5 at the upper end portion. The Anglich lever 6 mounted on the tension lever 3 is mounted outside the Anglich shaft holding portion 21. The Anglich shaft 5 is inserted through the tension lever 3, the Anglich shaft holding portion 21, the Anglich lever 6, and the governor lever 7.

  As shown in FIG. 4, the Anglich shaft 5 is configured in a disk shape whose one end is larger in diameter than the midway portion. The Anglich shaft 5 is inserted from the outside of the governor lever 7 and attached to the tension lever 3 together with the Anglich lever 6 and the Anglich shaft holding portion 21. In the vicinity of the disk-shaped portion of the Anglich shaft 5, a retainer 4 c inserted into the first rotating shaft 4 is disposed. The retainer 4c has a shape provided with a portion projecting outward from the sleeve, and the projecting portion of the retainer 4c prevents the Anglich shaft 5 from coming off from the tension lever 3. In the first rotating shaft 4, a spacer 4 b is inserted into the tension lever 3 on the opposite side of the retaining stopper 4 c. As a result, the tension lever 3 is positioned on the first rotation shaft 4 and held at a constant distance from the casing 2.

Next, the side gap adjusting mechanism of the governor lever will be described. FIG. 7 is a schematic diagram showing the configuration of the gap adjusting mechanism. In the casing 2, the tension lever 3 is positioned by a stopper 4c and a spacer 4b. Therefore, in order to adjust the gap between the angle lever 6 and the governor lever 7, an adjustment mechanism is provided between the tension lever 3 and the governor lever 7 (A), or from the casing 2 side (B) toward the tension lever 3 side. A method of providing an adjustment mechanism is adopted. Thereby, the position of the governor lever 7 etc. is adjusted with respect to the tension lever 3, and the side gap adjustment mechanism of a governor lever is comprised.
For this reason, while being able to comprise a side gap adjustment mechanism simply and easily, a durable thing can be comprised.

Next, a first configuration example of the governor lever side gap adjustment mechanism will be described. FIG. 8 is a partial rear sectional view showing a first configuration example of the side gap adjusting mechanism. In the first configuration example , a string spring 5b is used as the contact body. A string-wound spring 5 b is attached to the Anglich shaft 5 to generate a biasing force in a direction in which the space between the tension lever 3 and the governor lever 7 is widened. One end of the string spring 5 b is in contact with the tension lever 3, and the other end is in contact with the governor lever 7. Thereby, an urging force is applied to the governor lever 7. The Anglich shaft holding portion 21 and the Anglich lever 6 are provided with a hole having a diameter larger than the diameter of the string winding spring 5b in order to avoid interference with the string winding spring 5b attached to the Anglich shaft 5. The tension lever 3 is urged toward the governor lever 7 by the string spring 5b attached to the Anglich shaft 5. Then, the angle lever 6 is sandwiched between the tension lever 3 and the governor lever 7, the side gap is adjusted, and hunting can be prevented. By using an elastic body as an abutting body for adjusting the gap between the tension lever 3 and the governor lever 7, it is possible to give a constant urging force to the governor lever 7 and perform stable adjustment. Furthermore, it is hard to be damaged by elastic deformation even with a sudden impact. For this reason, an inexpensive and highly durable side gap adjusting mechanism can be configured.

Next, a second configuration example of the governor lever side gap adjusting mechanism will be described. FIG. 9 is a partial rear sectional view showing a second configuration example of the side gap adjusting mechanism. In the second configuration example , the adjustment bolt 25 is attached to the governor lever 7 so that the tension lever 3 is brought close to the opposite governor lever 7. The Anglich shaft holding portion 21 and the Anglich lever 6 are provided with holes having a diameter larger than the diameter of the adjusting bolt 25 so as to avoid interference with the adjusting bolt 25. Thereby, the distance between the tension lever 3 and the governor lever 7 can be set reliably, the side gap is adjusted, and hunting can be prevented. Moreover, since the adjustment part of the adjustment bolt 25 is located outside the governor lever 7, it is easy to adjust the side gap.

Next, a third configuration example of the governor lever side gap adjusting mechanism will be described. FIG. 10 is a partial rear sectional view showing a third configuration example of the side gap adjusting mechanism. In the third configuration example , the cap 22 b is attached to the fixing pin 22, and the tension lever 3 is brought close to the governor lever 7 on the opposite side. The cap 22b comes into contact with the inside of the governor lever 7, and the tension lever 3 is moved toward the governor lever 7 on the side opposite to the cap 22b insertion side. Thereby, the distance between the tension lever 3 and the governor lever 7 can be set reliably, the side gap is adjusted, and hunting can be prevented.

In addition, as long as it can be attached to the tip of the fixing pin 22 and can adjust the gap between the tension lever 3 and the governor lever 7, other than the cap 22b can be used. Next, a fourth configuration example of the governor lever side gap adjusting mechanism will be described. FIG. 11 is a partial rear sectional view showing a fourth configuration example of the side gap adjusting mechanism. In the fourth configuration example , the sleeve 22c is attached to the fixed pin 22 and the tension lever 3 is brought close to the governor lever 7 on the opposite side. The sleeve 22c contacts the inside of the governor lever 7, and the tension lever 3 is moved toward the governor lever 7 on the side opposite to the sleeve 22c insertion side. Thereby, the distance between the tension lever 3 and the governor lever 7 can be set reliably, the side gap is adjusted, and hunting can be prevented.

Next, a description will be given of an embodiment of a side gap adjustment mechanism of the governor lever. FIG. 12 is a partial rear sectional view showing an embodiment of the side gap adjusting mechanism. In the embodiment , the stay 30 is attached to the tension lever 3 to adjust the distance between the tension lever 3 and the tip of the Anglich shaft 5. The angle between the tip end of the stay 30 and the side surface of the tension lever 3 can be set by pressing the angle pin 5 from the outside in the insertion direction, and the angle lever 6 and the governor lever 7 can be positioned within this distance. . Thereby, side gap adjustment is performed. The stay 30 is fixed to the rear surface of the tension lever 3 by a bolt 30b. A long hole 30 c that is long in the left-right direction is provided in the fixing portion of the stay 30, and a bolt 30 b that is fitted into the long hole 30 c is fixed to the tension lever 3. The other end of the stay 30 extends forward and has a curved shape in plan view. The convex portion of the curved portion is in contact with the Anglich shaft 5. The stay 30 is attached to a surface parallel to the rotation axis of the tension lever 3 and abuts against the head of the angle pin 5 without interfering with other levers, so that the head of the tension lever 3 and the angle pin 5 The side gap adjustment mechanism that is easy to assemble is configured without affecting the other lever configurations. Further, since the side gap adjusting mechanism is configured in this way, the side gap can be easily adjusted.

Next, a fifth configuration example of the governor lever side gap adjusting mechanism will be described. FIG. 13 is a partial rear sectional view showing a fifth configuration example of the side gap adjusting mechanism. In the fifth configuration example , the stay 30 in the above-described embodiment is a leaf spring 31. One end of the leaf spring 31 is fixed to the rear surface of the tension lever 3 by a bolt 30b. The other end of the leaf spring 31 extends forward and is configured to be curved in plan view, and has a configuration in which the convex portion of the curved portion is in contact with the Anglich shaft 5. Since the side gap adjustment mechanism is configured in this way, the distance between the tension lever 3 and the governor lever 7 can be set reliably without adjusting the plate spring 31 by the urging force of the plate spring 31, and the side gap is adjusted. , Hunting can be prevented.

Next, a sixth configuration example of the governor lever side gap adjusting mechanism will be described. FIG. 14 is a partial front sectional view showing a sixth configuration example of the side gap adjusting mechanism. In the sixth configuration example , a member attached to the first rotation shaft 4 is used. A thread groove is formed on the outer side of the sleeve 34, and bolts 34 b and 34 b are attached to the sleeve 34. The bolts 34b and 34b are configured such that the mounting position of the sleeve 34 can be adjusted, and the inner bolt 34b is in contact with the Anglich shaft 5. As a result, the angle shaft 5 can be positioned and the side gap can be adjusted. Thereby, the distance between the tension lever 3 and the governor lever 7 can be set reliably, the side gap is adjusted, and hunting can be prevented.

Next, a seventh configuration example of the side gap adjusting mechanism of the governor lever will be described. FIG. 15 is a partial front sectional view showing a seventh configuration example of the side gap adjusting mechanism. In the seventh configuration example , a retainer 4c attached to the first rotation shaft 4 is used. A shim 35 is mounted on the inner side of the retainer 4 c, and the shim 35 abuts on the Anglich shaft 5. As a result, the angle shaft 5 can be positioned and the side gap can be adjusted. Thereby, a side gap is adjusted easily and hunting can be prevented.

Next, a description will be given of the eighth configuration example of the side gap adjustment mechanism of the governor lever. FIG. 16 is a partial front sectional view showing an eighth configuration example of the side gap adjusting mechanism. In the eighth configuration example , a contact member 36c urged by a spring 36d is attached to a retaining member 36b attached to the first rotation shaft 4 and used. A spring 36 is attached to the inside of the retainer 36b, and this spring 36d urges the contact body 36c inserted into the retainer 36b to the inside (tension lever 3 side). Then, the contact body 36 c is configured to contact the Anglich shaft 5. As a result, the side gap can be adjusted reliably. And the durability of the mechanism for biasing the Anglich shaft 5 can be improved.

The side surface partial sectional view which shows the structure of a governor apparatus. The rear surface partial sectional view of a governor device. The whole side view of a governor lever. The rear surface partial sectional view of a governor lever. The side view which shows the assembly structure of a governor lever. The perspective view which similarly shows an assembly structure. The schematic diagram which shows the structure of a gap adjustment mechanism. The rear surface partial cross section figure which shows the 1st structural example of a side gap adjustment mechanism. The rear surface partial sectional view which shows the 2nd structural example of a side gap adjustment mechanism. The rear surface partial cross section figure which shows the 3rd structural example of a side gap adjustment mechanism. The rear surface partial cross section figure which shows the 4th structural example of a side gap adjustment mechanism. The rear surface partial sectional view which shows the Example of a side gap adjustment mechanism. The rear surface partial cross section figure which shows the 5th structural example of a side gap adjustment mechanism. The partial front sectional view showing a sixth configuration example of the side gap adjusting mechanism. The partial front sectional view showing a seventh configuration example of the side gap adjusting mechanism. The partial front sectional view showing an eighth configuration example of the side gap adjusting mechanism.

DESCRIPTION OF SYMBOLS 1 Governor apparatus 2 Casing 3 Tension lever 4 First rotation shaft 5 Anglich shaft 5b String-wound spring 6 Anglich lever 7 Governor lever 8 Governor weight 9 Governer sleeve 21 Anglich shaft holding part

Claims (4)

The casing (2) has a tension lever (3) pivotally supported by a rotating shaft (4), and the angle lever (3) is provided at the lower portion of the tension lever (3) by an Anglich shaft (5). 6) and a governor lever adjusting mechanism of the governor device (1) pivotably supported by the governor lever (7), a stay (30) is disposed between the tension lever (3) and the governor lever (7), One end of the stay (30) is attached and fixed to a surface parallel to the rotation shaft (4) of the tension lever (3) on the rear surface of the tension lever (3), and the other end of the stay (30) is A governor lever adjusting mechanism of a governor device, wherein the side facing the tension lever (3) of the governor lever (7) is contacted in a pushing direction . The governor lever adjusting mechanism of the governor device according to claim 1, wherein the fixing portion of the stay (30) is provided with a long hole (30c) extending in the left-right direction, and a bolt (30b) is inserted into the long hole (30c). Attach and fix, set the distance between the tip of the stay (30) and the side surface of the tension lever (3), and position the angle lever (6) and governor lever (7) within this distance. 3) A governor lever adjusting mechanism of a governor device, characterized in that it is configured to adjust the distance between the side gaps between the governor lever (7) and the governor lever (7) . The governor lever adjusting mechanism of the governor device according to claim 1, wherein the other end of the stay (30) is bent and extended in the forward direction of the tension lever (3). . The governor lever adjusting mechanism of the governor device according to claim 3, wherein the stay (30) is configured to be bent in a plan view at a portion bent forward, and the convex portion of the curved portion is formed into the governor lever (7). A governor lever adjusting mechanism of a governor device, wherein the side facing the tension lever (3) is contacted in the direction of pushing .

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