JP2010047130A - Engine leveling apparatus of monorail conveying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low cost and durable monorail conveying machine for maintaining a general purpose engine mounted on the monorail conveying machine in a roughly horizontal state independent from inclination of the monorail with a simple structure, providing reduced oscillation at attachment/detachment of a power. <P>SOLUTION: A shock absorbing device 4 maintains the general purpose engine 1 of the monorail conveying machine mounted on the monorail conveying machine in a roughly horizontal state independent from inclination of the monorail 3 with simple structure, reduces oscillation during attachment/detachment of the power, provides preferable duration and reduced cost without using a heavy weight, an inclination sensor, and an electric cylinder, and without causing the cargo weight reduction of the monorail conveying machine. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an engine leveling device having a simple tilt adjustment structure for maintaining an engine mounted on a single track transporter regardless of the tilt of the track.

  In the engine tilting device of a single rail transporter, rotate the engine output shaft in the direction of travel of the body around the rotation axis, connect the gantry and the engine with the cylinder, and extend and retract the engine regardless of the tilt of the rail. The device for maintaining the level is commonly used as a device capable of maintaining the horizontal posture of the engine within the range of the engine tilt limit.

  A practical engine horizontal posture maintaining device requires an electric cylinder for rotating the engine and a control device for extending and retracting the electric cylinder, such as sensors for detecting the inclination of the fuselage and the inclination of the engine as disclosed in Patent Document 1. In addition, it is not suitable for a small single-rail transporter due to the high cost and the possibility of being out of control due to failure of electrical components such as sensors.

  A technique for maintaining the level of the engine by attaching a weight below the engine with the engine output shaft as the rotation center is generally used. However, in the case of a single rail transporter, since the change in the rail inclination is not uniform, the load variation on the engine is also severe. For this reason, the engine is rotated in the direction opposite to the rotation direction of the engine output shaft by the driving reaction force of the engine, and the rotation amount is not constant. To solve this problem, it is necessary to make the weight sufficiently large, but this will increase the weight of the fuselage and reduce the weight of the load.

Many single-rail transporters use a centrifugal clutch for engine power transmission. For this reason, when the engine speed exceeds a certain level, the clutch is instantly connected to transmit power, and an excessive load is generated at the time of start. As a result, the machine with the output shaft as the center of rotation has the drawback that the engine swings greatly, causing problems in the engine support and bearings.
Japanese Patent No. 3932013

  The problem to be solved is that the general-purpose engine mounted on the single rail transporter has a simple structure and keeps it almost horizontal regardless of the inclination of the rail. It aims to provide a low-cost single rail conveyor.

  In the present invention, in order to always avoid a load fluctuation or a large shake of a general-purpose engine mounted on a single rail transporter, a support shaft frame is fastened to the left and right of the gantry, and the center of the output shaft of the engine receiver provided in the engine The most important feature is to provide an impact absorbing device for supporting the engine by a bearing provided on the support shaft frame and connecting the engine receiver and the gantry.

  In the engine leveling device of the present invention, when the engine reaches a certain rotation, power is transmitted to the engine output pulley by the centrifugal clutch and transmitted to the input shaft pulley of the speed reducer. In addition, since the engine tends to swing greatly in a tilted posture, the shock absorbing device has an advantage that it can absorb this force and suppress the swing to be small.

  The general-purpose engine mounted on the single-rail transporter has a simple structure, regardless of the tilt of the rail, has little vibration even when the power is disengaged, has excellent durability, and maintains the single-rail transporter engine almost horizontally at low cost. This was achieved by using an impact absorbing device without using heavy weights, tilt sensors, and electric cylinders, and without reducing the weight of the small single-rail conveyor.

  FIG. 1 is a front view of an embodiment of the apparatus of the present invention, FIG. 2 is a side view of a single rail transporter during climbing, FIG. 3 is a side view during horizontal running, and FIG. 4 is a side view during downhill. FIG. 1 is an engine, 2 is a weight, 3 is a rail, 4 is a shock absorber, 5 is a piston, 6 is a piston pin, 7 is an engine output shaft, 8 is a centrifugal clutch, 9 is a reducer input shaft pulley, Reducer input shaft, 11 is a reducer, 12 is a drive wheel, 13 is a base (rear), 14 is a start / stop lever, 15 is a base (front), 16 is an engine receiver, 17 is an engine support shaft, and 18a is a bearing ( Left) and 18b are bearings (right), 19a is a support shaft frame (left), and 19b is a support shaft frame (right).

On the gantry (rear) 13 of the single rail transporter, a drive wheel 12 that meshes with the rail 3 to obtain thrust is arranged on the final shaft of the speed reducer 11, and the speed reducer 11 is attached. A gantry (front) 15 is fastened in front of the gantry (rear) 13, and a support shaft frame (left) 19a and a support shaft frame (right) 19b are fastened to the left and right of the gantry (front), respectively.
The support shaft frame (left) 19a is provided with a bearing (left) 18a to support the engine output shaft 7. The engine 1 is fastened with an engine receiver 16, and an engine support shaft 17 fixed to the engine receiver 16 is provided on the center of the engine output shaft 7. The engine support shaft 17 is supported by a bearing (right) 18b provided on a support shaft frame (right) 19b so that the engine receiver 16 and the engine 1 can be rotated about the engine output shaft 7 as a single body. It is.

  A weight 2 is attached to the lower surface of the engine 1, and the engine 1 is adjusted to tilt slightly forward in the horizontal state of the aircraft. A cylinder case of the shock absorbing device 4 is fastened above the engine support shaft 17 of the engine receiver 16, and one end of the piston 5 is rotatably attached to a piston pin 6 fixed to a gantry. The amount of movement of the piston 5 when tilted backward is greater than the amount of movement of the piston 5 when tilted forward.

  On the outside of the bearing (left) 18a of the engine output shaft 7, there are attached a centrifugal clutch 8 and an engine output shaft pulley whose power transmission is engaged and disengaged depending on the engine speed, and a belt is wound around the speed reducer input shaft pulley. Power is transmitted to 9. The engine of the present invention is a mounting example of a deceleration type engine, and the center of gravity of the engine itself is located in front of the engine output shaft 7. Therefore, the weight 2 is attached to the lower surface of the engine behind the engine output shaft 7.

  When the engine 1 is started and the start / stop lever 14 is operated, the throttle wire is pulled in conjunction with it, and the engine speed rises. When the engine speed reaches a certain level, power is transmitted to the engine output shaft pulley by the centrifugal clutch 8 to decelerate. Power is transmitted to the machine input shaft pulley 9. At this time, due to a sudden load fluctuation, a driving reaction force is applied contrary to the rotational direction of the engine output shaft 7 (left rotation as viewed from the normal output shaft), and the engine is greatly shaken and swings in a backward leaning posture.

  The shock absorbing device 4 is composed of a cylinder, oil sealed in the cylinder, an orifice through which the oil passes, and a piston 5, and requires a large force for a sudden movement of the piston, and is small for a gentle movement of the piston. It has a structure that only requires power.

  The shock absorber 4 has a cylinder case fastened to the upper side of the engine support shaft 17 of the engine receiver 16 so that one end of the piston 5 can freely rotate to the gantry (front), and the engine 1 can rotate to a tilted position. In this case, the piston is attached so that the amount of movement of the piston is larger than that when the vehicle is tilted forward. That is, when a driving reaction force is applied on the rail and the engine tries to tilt backward, the piston tends to move at a higher speed than the forward tilt, so that the amount of shock absorption increases.

  The shock absorption amount of the shock absorbing device 4 can be freely adjusted with the dial, but if it is increased, a large force is required to move the piston, and the engine 1 is rotated by the weight 2 and is insensitive to the horizontal operation. Thus, the horizontal function due to the rail inclination is impaired. Therefore, it is desirable that the rapid movement of the engine due to the inclination of the rail other than that when the centrifugal clutch 8 having the largest load fluctuation of the engine is engaged is absorbed. By attaching such an impact absorbing device 4, the weight 2 on the lower surface of the engine may have a minimum weight that can hold the engine horizontally. Thereby, it can be set as the lightweight compact single rail conveyance machine, without enlarging the weight 4. FIG.

  A weight 2 is attached to the lower surface of the engine. In the horizontal state, the engine is adjusted to tilt slightly forward. The engine tends to lean backward by the reaction force due to the engine load. It is set to be slightly forward tilted.

  Since the inclination limit of general-purpose engines is allowed to be about 20-30 degrees, the engine does not need to be leveled regardless of the inclination of the rail, and the engine is held in the range of plus or minus 20 degrees to 30 degrees. If it runs, the function of the engine leveling device can be satisfied.

Further, as shown in FIG. 4 when the engine is tilted backward, when the engine rotates in the backward tilt direction, the tilt angle of the shock absorber 4 is positioned in a direction that easily resists the rear tilt of the engine. Therefore, it is easy to correct the posture that rotates by the reaction force due to the engine load. The effect of the impact absorbing device will be explained by comparing the case of downhill and the case of uphill. Since the negative load acts on the engine in the case of downhill, the engine of the single rail transporter of the present invention is Try to be inclined. However, due to the running resistance and mechanical resistance of the speed reducer, the force that the engine tries to turn due to a negative load is small compared to when climbing uphill. Therefore, by configuring the shock absorber as in the present invention, the engine inclination limit can be reduced. It can run without exceeding.
Accordingly, the weight 2 attached to the lower surface of the engine may be set to a minimum weight that can be rotated in the horizontal direction within the allowable range.

  As described above, this horizontal device does not require a sensor, an electric cylinder, or a control device, and has an excellent durability and a simple structure. Since a general-purpose engine can be mounted on a single rail transporter that travels on a rail with a large change in slope on steep slopes, it is low in cost and excellent in maintainability.

  Power is transmitted to the centrifugal clutch and engine output shaft pulley from the output shaft of the engine of the single rail transporter, and the driving reaction force caused by sudden load fluctuations transmitted to the input shaft pulley is heavy weight, tilt sensor, electric Absorbing by installing a shock absorber that connects the gantry and the engine without using a cylinder, maintaining the level of the single rail transporter, extending the life of the single rail transporter equipped with a general-purpose engine, and reducing manufacturing costs It can be applied to reducing applications.

It is the front view which showed the implementation method of the engine leveling apparatus. (Example 1) It is the side view which showed the implementation method of the engine leveling device at the time of climbing. (Example 1) It is the side view which showed the implementation method of the engine leveling apparatus at the time of horizontal driving | running | working. (Example 1) It is the side view which showed the implementation method of the engine leveling apparatus at the time of downhill driving | running | working. (Example 1)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Weight 3 Rail 4 Shock absorber 5 Piston 6 Piston pin 7 Engine output shaft 8 Centrifugal clutch 9 Reducer input shaft pulley 10 Reducer input shaft 11 Reducer 12 Drive wheel 13 Mount (rear)
14 Start stop lever 15 Base (front)
16 Engine support 17 Engine support shaft 18a Bearing (left)
18b Bearing (Right)
19a Support shaft frame (left)
19b Support shaft frame (right)

Claims (2)

  Power is transmitted from the engine to the speed reducer, the drive wheel provided on the final shaft of the speed reducer is used to obtain thrust, and the engine support shaft is supported by the left and right support shaft frames provided on the gantry. The engine is supported pivotably in the advancing direction with the shaft as the center of rotation, a weight is attached to the lower surface of the engine to hold the engine horizontally, and the gantry and engine are connected by an impact absorber. The engine leveling device of the single rail transporting machine. Compared to the forward leaning posture in which the engine rotates in the rotational direction of the engine output shaft that normally rotates counterclockwise, the engine rotates in the opposite direction from the engine output shaft pulley to which the belt is wound around the speed reducer input shaft pulley. The engine leveling device according to claim 1, wherein the engine and the pedestal are connected by the impact absorbing device so that the movement amount of the piston of the impact absorbing device is increased in the case of the backward tilting posture.

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