JPH072991Y2 - Throttle actuation mechanism - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to an actuation mechanism for actuating a throttle during an engine performance test.

B. Outline of the Invention This invention relates to an actuation mechanism that activates a throttle provided in an engine during an engine test. A plurality of wires are wound around a pulley driven by one actuator, and each wire tip is attached to the end. The engaging parts for engaging different throttles are attached respectively, and further, each engaging part is independently moved to the throttle position by the moving actuator, so that even if there are several kinds of test engines, one unit can cope with them.

C. Conventional technology The engine installed on the test stand to perform performance tests operated the throttle with an electric actuator. That is, a lever is connected to the tip of the wire wound around the actuator, this lever is attached to the throttle, and the actuator is operated to pull the wire to rotate the lever to open and close the throttle.

D. Problems to be solved by the device However, since the throttle shape, its opening degree, etc. are different for each engine, conventionally, an actuator suitable for each engine was specially prepared and used properly according to the test. . Therefore, many actuators have to be prepared, and there is a problem that preparation is troublesome.

E. Means for Solving the Problems The present invention has been made to solve the above problems. One end is fixed to a pulley driven and rotated by an actuator, and a wire is wound around the pulley. In the throttle operating mechanism, which is provided with an engaging portion for engaging the throttle at the other end of the, and operates the throttle through the engaging portion by pulling the wire by the rotation of the pulley, one end is fixed to the pulley. A plurality of wires around each of the pulleys, and each of the other ends of the plurality of wires is provided with an engaging portion adapted to a different throttle,
A moving actuator for moving the engaging portion to the throttle position is provided in each of the engaging portions.

F. Action Even if the engine is different, the engaging part can be selected and used according to the engine, so the actuator can be shared,
A single actuation mechanism can actuate the throttles of several types of engines.

G. Embodiment An embodiment of the operating mechanism of the present invention will be described below with reference to the drawings.

FIG. 1 shows the actuating mechanism 2. The actuator 4 is shown in the upper left portion of the drawing, and the throttle 6 is shown in the lower right portion. The actuator 4 is appropriately driven by an operation signal from the outside, and a pulley 8 is connected to its drive shaft. Two wires can be wound around the pulley 8, and a wire 10 and a wire 11 are fitted in each of them. That is, two winding portions are formed on the pulley 8 and the wire 1 is attached to each winding portion.
One end of 0, 11 is fixed and the wire 10, 1
1 is wound.

One wire 10 extends downward from the pulley 8 via the pulley 12 in the drawing, and is fixed to a lever 14 as an engaging portion at the lower end (the other end) of the wire 10. The lever 14 has a shape adapted to the predetermined throttle 6 of the engine, and the lever 14 is mounted on a support 16 so as to be rotatable around a pin 18.
The support 16 is movable in the vertical direction in the figure, and is moved by the moving actuator 20 in the vertical direction. The wire 10 includes a fixed base 22 for supporting the pulley 8 and the support base.
Between 16 and 16, it is housed in the outer tube 24 so as to be freely accessible. The outer tube 24 is made of a flexible member that does not stretch, and flexes freely along with the inner wire 10.

Similarly to the wire 10, the other wire 11 also extends downward from the pulley 8 through the pulley 12 in the drawing, and is fixed to the lever 26 as another engaging portion at the lower end (the other end) of the wire 11, Is rotatably attached to a support base 30 via a pin 28. The lever 26 has a shape different from that of the lever 14 and is formed to fit a throttle (not shown) of an engine different from the engine that fits the lever 14. The other part of the lever 26 has the same structure as the other part of the lever 14, is installed in parallel with each other, and is moved up and down together with the support base 30 by the moving actuator 32.
Further, reference numerals 36 and 38 in the figure are return springs for the lever 14 and the lever 26.

Therefore, the levers 14 and 26, which are the engaging portions, are individually moved to the throttle positions by the moving actuators 20 and 32, respectively.

Next, the operation of the actuating mechanism 2 will be described. Once the engine is mounted on the stand, select the lever 14 or lever 26 that fits the throttle on the engine.
If it is, for example, the lever 14, the moving actuator 20 is operated to lower only the lever 14 via the support 16. Then, the tip of the lever 14 reaches the rotating portion of the throttle 6, so that the actuator 6 is driven to rotate the pulley 8 and pull the wire 10 to operate the throttle 6. When the engine test is completed and the next engine test is started, the moving actuator 20 is operated to pull up the lever 6, and similarly the moving actuator 32 is operated to move the other lever 26 downward via the support base 30. Lower it into contact with the next engine throttle. Lever 26
If it is formed so as to fit the throttle of this engine, the throttle can be immediately operated by the lever 26.

In the above embodiment, the example in which the levers 14 and 26 are arranged in two rows in parallel is described, but the number of levers may be more than this.

H. Effect of the Invention According to the present invention, one end of a plurality of wires is fixed around a pulley of one actuator and wound around, and an engaging portion suitable for the throttle of each engine is attached to the other end of each wire. By configuring the actuating mechanism and further providing the moving actuators that move each engaging part to the throttle position, it is possible to perform throttle operation for different types of engines with one actuating mechanism, and to perform efficient engine testing. Can be made.

[Brief description of drawings]

FIG. 1 is a side view of the actuating mechanism of the present invention, and FIG. 2 is a front view of FIG. In the drawings, 2 is an operating mechanism, 4 is an actuator, 6 is a throttle,
8 is a pulley, 10 and 11 are wires, 14 and 26 are levers, 16 and 30 are supports, and 20 and 32 are movement actuators.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. One end is fixed to a pulley that is driven and rotated by an actuator, a wire is wound around the pulley, and an engaging portion that engages with a throttle is provided at the other end of the wire. In a throttle actuation mechanism for actuating the throttle via the engaging portion by pulling, a plurality of wires are respectively wound around the pulley with one end fixed to the pulley, and different throttles are applied to the other ends of the plurality of wires. 2. A throttle operating mechanism, characterized in that each of the engaging portions is provided with a moving actuator for moving the engaging portion to the throttle position.