JPS5843636Y2 - Construction machine engine operation structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an engine operating structure for construction machinery such as a backhoe or a dozer. This invention relates to an operating structure for a speed regulating lever that is attached to swing to the side.

Regarding the above operation structure, in order to swing the speed regulating lever toward the cooling fan side, the most structurally possible structure is to provide a linkage structure for lever operation on the fan side, and to pull and operate the operation lever from the fan side. Although it is simple and preferable, in reality it is not possible to adopt the arrangement described above because the movable part of the linking part structure is interfered with by the cooling fan. The speed is controlled by a push operation using a rod linkage structure.

However, when the operating tool and the regulating lever are linked by a rod structure, the rod must be inserted into the operating system to change the operating direction, or be placed in a narrow space such as in various devices or frames. The number of component parts in the configuration has become extremely large, and this has made assembly and swing adjustment of the speed regulating lever extremely difficult, and has led to an overall cost decrease.

In view of the above-mentioned circumstances, this invention aims to eliminate the above-mentioned drawbacks at once, although the speed regulating lever is operated from the side opposite to the cooling fan, and the present invention aims to solve the above-mentioned drawbacks at once. Regarding the structure, a release wire configured to displace the operated side end of the outer wire with an operating tool is stretched from the side opposite to the fan with respect to the speed regulating lever, and the release wire configured to displace the operated side end of the outer wire It is characterized in that the end portion of the tool and the speed regulating lever are interlocked and connected to freely rotate relative to each other around an axis that is parallel or approximately parallel to the swing axis of the lever.

In other words, the above-mentioned adjustment can be achieved by linking the operating tool and the regulating lever with a highly flexible release wire without being subject to the layout restrictions imposed by the cooling fan that only provides a fixing structure for the inner wire. Although the speed lever is operated from the opposite side of the fan, the operating system can be configured in the simplest manner in terms of assembly and adjustment, and at the same time, costs are reduced by significantly reducing the number of parts. In addition, since the outer wire end is allowed to rotate freely around the pivot axis of the lever, even though the lever and outer wire are relatively displaced by speed regulating operation, that displacement is automatically controlled by the bridge surface. Therefore, speed regulating operation can be performed smoothly for a long period of time without unreasonable twisting between the inner wire and the inner wire.

Next, embodiments of the present invention will be described based on illustrative drawings.

An engine 3 with a cooling fan 2 attached to a frame 1 of a construction machine such as a backhoe or dozer is attached to a vibration-proof structure 4...
is installed through the fan, and a speed regulating lever 5 for controlling the fuel injection amount is located near the fan 2, and the lever 5 and an operating tool 6 near the control section are linked by an operating structure 7,
The engine 3 is configured so that the output rotational speed of the engine 3 is increased by operating a lever toward the fan 2 against the spring 8 that urges the fan 2 in the idling direction.

The operation structure 7 has a U-shaped member 9 attached to the free end side of the speed regulating lever 5, and a member 10 that contacts the lever 5 is provided on the U-shaped member 9 to prevent rotation. A support member 11 is connected to the member 9, and a rotating body 12 is installed across both members 9 and 11 to freely rotate around an axis P parallel to the lever swing axis P. A hole is formed perpendicular to the hole, and a knotted screw 13 is inserted into this hole.
(katsunatsu) ata.

Then, when the speed regulating lever 5 is in the maximum swing state toward the fan 2 side, a single-shaped member 14 is attached to a location where there is no interference between the lever 5 and the fan 2, and the cylindrical screw 1
A hole is drilled at approximately the same height as 3.

On the other hand, a U-shaped member 9 is attached to the free end of the swinging arm 6a of the operating tool 6 that swings around the swinging axis 12, and a member 10 that comes into contact with the swinging arm 6a is attached to the shaped member 9
A support member 11 is provided in series with the U-shaped member 9, and both members 9 and 11 are rotatably rotated around an axis P3 parallel to the swing axis P2. A rotary body 18 is installed, a hole perpendicular to the axis P3 is formed in the rotary body 12, a knotted screw 15 is inserted into the hole, and is fixed with nuts C and C.

Then, one end of the inner wire 16a of the release wire 16 is inserted through the cylindrical screw 15 and attached to the frame member 1a by the stopper 17, and the other end of the inner wire 16a is inserted through the cylindrical screw 13 and the hole. and fix the release wire 16 to the member 14 with the stopper 1T, and bring the ends of the outer wire 16b into contact with the cylindrical screws 13 and 15, respectively, so that the release wire 16 is connected to the regulating lever 5 on the side opposite to the fan 2. The structure is such that the regulating lever 5 is swung toward the fan 2 against the spring 8 by the displacement of the operated tool end of the outer wire 16a due to the swinging of the operating tool 6. .

Incidentally, the swing adjustment of the speed regulating lever 6 can be easily performed by changing the position of the joint screw 13 or 15.

[Brief explanation of the drawing]

The drawings show the implementation of the engine operating structure for a construction machine according to the present invention, with Fig. 1 being a partial plan view of the construction machine, Fig. 2 being a detailed view of the engine operating structure, and Fig. 3 being a perspective view of a portion of the speed regulating lever. It is a diagram. 2...Cooling fan, 3...Engine,
5... Speed control lever, 6... Operating tool, 8
... Spring, 16 ... Release wire, 16a ... Outer wire, P, Pl.
...Axis core.

Claims (1)

[Scope of utility model registration request] Engine 3 installed in Tateiso and cooling fan 2 attached to it
This is an operating structure for a speed regulating lever 5 attached to swing toward the fan 2 side against a spring 8 near 0, and configured to displace the operated side end of the outer wire 16b by an operating tool 6. The released wire 16 is stretched from the opposite side of the fan 2 to the speed regulating lever 5, and the end of the operated tool of the outer wire 16b and the speed regulating lever 5 are An engine operation structure for a construction machine characterized by being interlocked and connected for relative rotation around a shaft center 2 that is parallel or nearly parallel to a moving shaft center P.