JPH0861077A - Steady strain structure of engine-driven generator, etc., supported by vibration proof rubber - Google Patents

Abstract

PURPOSE: To prevent damage even if receiving an impulsive vibration by installing a locking means in space between a body and a frame of an engine- driven generator or the like and a frame to integrally lock them together in a state that the working of vibration proof rubber is checked, in an unlockable manner. CONSTITUTION: A lock plate 9 is turned round a knobbed bolt 8, and when a notch 10 is fitted in a knobbed bolt 11, and these l:x:>its 8 and 11 are clamped tight, both brackets 5 and 6 are locked tight via the lock plate 9, and thereby a locking means 7 comes to a state of being locked. When both these bolts 8 and 11 are loosed to some extent, the lock plate 9 is turned round with the bolt 8 as an axis and the notch 10 is separated from the bolt 11, the locking means 7 comes to a state of being unlocked, whereby vibro-proof rubber 2 brings its intrinsic function into full play. Since the locking means 7 is made into its lockedness and an engine-driven generator 3 and a frame 1 have been integrally locked together, this generator 3 will in no case vibrate separately from the frame 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine generator so that vibration from an engine generator or the like, for example, a work machine such as a generator with an engine or a portable work machine with an engine, is not directly transmitted to the outside through a frame. This is intended for products that have anti-vibration rubber installed between the main body and the frame, etc., and when the work machine such as the engine generator is transported with the frame fixed to the luggage carrier of the trunk, it is activated via the anti-vibration rubber. The present invention relates to a steady rest structure of an engine generator or the like supported by a vibration-proof rubber that prevents the generator or the like from shaking due to vibration from a truck.

[0002]

2. Description of the Related Art Conventionally, when an external impact is applied to an engine generator or the like, which is supported on a frame via a vibration-proof rubber,
The engine generator or the like shakes with the vibration isolating rubber deformed, and if the vibration continues, the vibration isolating rubber may be damaged. A first conventional example as a measure for preventing the adverse effect will be described with reference to FIGS.

FIG. 4 is a view of a stopper device according to a first conventional example, and FIG. 5 is a view taken in the direction of arrow A in FIG. In the figure, the frame 10
The engine 102 is set on the upper part of FIG. There is a stopper 104 integrally attached to the engine side in the vicinity of the anti-vibration rubber 103.
1 is inserted in the slit portion 105.

The operation of the first conventional example will be described. When there is a relative vacancy between the frame 101 and the engine 102, the slit portion 105 of the frame 101 and the stopper 10
The deformation amount of the vibration-proof rubber 103 is regulated by the gap size of the insertion portion of No. 4. In generators with an engine, it is common to provide vibration-proof rubber between the engine and the external frame to prevent the vibration generated by the engine from being transmitted to the external frame, but portability is required. In the case of the generator with engine, the low frequency (5H
(z to 30 Hz) may be applied.

The anti-vibration rubber for obtaining the anti-vibration effect during normal operation is unavoidable at the resonance point in the low frequency range, and the vibration of the internal engine part with a large amplitude against external vibration is generated. Resonance occurs and if it is vibrated for a long time in this state, there are problems in durability of the anti-vibration rubber and vibration resistance of the engine section and the generator section. Further, in the first conventional example, the stopper 104 and the frame 101 may come into contact with each other to generate a metallic sound.

A second conventional example for solving the above problem will be described with reference to FIG. 6 described in Japanese Utility Model Laid-Open No. 3-71138. FIG. 6 is a sectional view of the second conventional example. In the figure, 110 is a frame, 113 is a generator, L is a generator 11
3 is a center line, 115 is a plate mounted below the generator 113, 115a is a cylindrical tube body that is concentric with the center line L and projects in the center of the plate 115, and 110a is a tube body 115.
It is a pin fixed to the frame 110 by welding or the like concentrically with the center line L inside a. Pin 110a to plate 115
The cylinder 115a may be provided on the side of the frame 110.

120 is a cylindrical body 115 around the pin 110a.
It is a rubber bush mounted with a predetermined gap between the inside of a and higher than the pin 110a. The plate 115 is sandwiched between the generator 113 and the anti-vibration rubber 111, and the nut 11
Both are tightened together.

The operation of the second conventional example will be described. During normal operation, the anti-vibration rubber 111 acts to provide anti-vibration. Vibration from the frame 110 side such as during transportation is isolated by the anti-vibration rubber 111, and when the amplitude increases, the rubber bush 120 and the plate 1
The cylindrical body 115a welded to 15 interferes with each other to suppress the shake.

In this conventional example, in the engine generator installed on the frame via the anti-vibration rubber, the state is located near the center line of the engine generator, and the pin is externally attached to one of the frame and the engine generator. The following effects are obtained by providing the cylindrical tubular body which is loosened while maintaining an appropriate gap with the outer circumference of the rubber bush mounted in (2). (1) Shaking from the frame side during mailing in a vehicle or the like can be suppressed by a simple structure.

(2) Therefore, contact between the frame and the generator is eliminated, and the durability of the anti-vibration rubber and the durability of the engine section and the generator section are improved.

[0011]

However, some vibrations from the outside include unpredictable shocking vibrations, and while such vibrations continue, the weight of the engine generator or the like may be relatively heavy. Thus, there is a drawback that the fatigue of the anti-vibration rubber is accelerated, and finally the anti-vibration rubber is damaged, and in addition, an engine generator or the like that is shaken by vibration hits other adjacent equipment and damages each other.

An object of the present invention is to prevent the engine generator or the like from being shaken by an external vibration, for example, a vibration-proof rubber which is not damaged even if it receives a shocking vibration from a truck during transportation. It is in providing structure.

[0013]

A first aspect of the present invention is directed to an engine generator or the like supported on a frame via a vibration-proof rubber.
It is characterized in that locking means for integrally fixing the main body of the engine generator or the like and the frame together with the anti-vibration rubber blocked is attached so as to be unlockable.

According to a second aspect of the present invention, in an engine generator or the like supported on a frame via a vibration proof rubber, brackets attached to the body of the engine generator or the like and the frame, respectively.
It is characterized in that it has a vibration-proof rubber that is baked and fixed between the both brackets, and a locking means that locks and unlocks the bracket.

According to a third aspect of the present invention, in an engine generator or the like supported on a frame via a vibration proof rubber, brackets attached to the engine generator main body and the frame respectively, and an anti-baking fixed between the brackets. In a device having a vibrating rubber and locking means for locking and unlocking the bracket, an intervening member to which the locking means is fixedly or releasably attached to the bracket, and the interposing member can be opened to the bracket It is characterized by having a fixing member for fixing to.

[0016]

Since the present invention is configured as described above, in the case of the engine generator supported by the anti-vibration rubber, the engine generator and the like have the anti-vibration rubber on the frame when the locking means is in the unlocked state. The anti-vibration rubber can support the original function of the anti-vibration rubber. For transportation, etc., if a large number of generators, etc. are loaded onto the truck bed with their frames being in close contact with each other, and the truck is still running with the frame fixed to the truck, the adjacent generators will be generated. The machine directly receives the vibrations from the truck while it is running and swings individually.

In this case, when the truck runs on a bad road, the vibration of the engine generator and the like also increases in accordance with the road surface condition, and the engine generator and the like have a considerable weight.
In particular, when the shock absorbing vibration is applied, the acceleration G also becomes large, and not only the anti-vibration rubber is damaged but also the stopper device and the steady device as steady rests above a certain level are separated from the engine generator. Acceleration G is received properly, and it is damaged within a few repetitions, and the engine generator and the like also hit each other and are damaged.

On the other hand, in the case of the present invention, when vibration is applied from the outside, the locking device is locked and the engine generator and the frame are integrally fixed. It does not vibrate separately, and it is possible to reliably prevent the engine generator and the like and the anti-vibration rubber from being damaged by external vibration.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment according to the present invention will be described with reference to FIGS. 1 is a cross-sectional view of a main part of a first embodiment according to the present invention, and FIG. 2 is a view on arrow P of FIG. In the figure, an engine generator and the like supported on a frame 1 via a rubber vibration isolator 2,
For example, in the generator 3 with an engine, the brackets 5 and 6 on which the anti-vibration rubber 2 is baked and supported between the main body 4 of the engine-equipped generator 3 and the frame 1 are integrally formed in a state in which the function of the anti-vibration rubber 2 is blocked. Locking means 7 for fixing is attached so as to be unlockable.

The locking means 7 is loosely fitted to the knob bolt 8 attached to the bracket 5, the knob bolt 11 attached to the lower bracket 6, and the knob bolt 8, and is centered on the center of the knob bolt 8. It is composed of a circular arc-shaped notch 10 and a lock plate 9 that fits on a knob bolt 11. In FIG. 2, the solid line shows the locked state, and the chain double-dashed line shows the unlocked lock plate 9.

The operation of the first embodiment will be described. Turn the lock plate 9 around the knob bolt 8 and insert the cutout 1
When 0 is fitted into the knob bolt 11 and the knob bolts 8 and 11 are sufficiently tightened, the bracket 5 and the bracket 6 are fixed via the lock plate 9, and the lock means 7 is locked. When the bolt 8 with knob and the bolt 11 with knob are loosened and the lock plate 9 is rotated around the bolt 8 with knob to remove the notch 10 from the bolt 11 with knob, the locking means 7 is unlocked and the anti-vibration rubber 2 is essentially the same. Can exert the function of.

With the locking means 7 unlocked, the engine-equipped generator 3 is mounted on the frame 1 with the anti-vibration rubber 2
As a result, the anti-vibration rubber 2 can exhibit the original function of the anti-vibration rubber. Next, when a large number of generators with an engine 3 are fixed to the bed of a truck (not shown) with the frame 1 in close contact with each other for transportation and the trucks are run as they are, adjacent generators with an engine are attached. 3 receives the vibrations from the truck while it is running and swings individually.

In this case, when the truck runs on a bad road, the vibration of the engine-equipped generator 3 also increases in accordance with the road surface condition, and the engine-equipped generators 3 have a considerable weight. The acceleration G when subjected to vibration also increases, not only damaging the anti-vibration rubber 2, but also a stopper device and an anti-vibration device as vibration-preventing means for suppressing vibration above a certain level, each of which is equipped with an engine-generated power. Acceleration G from the machine 3 is received properly, and after repeated several times, it is damaged and the generator 3 with engine is also damaged.

On the other hand, in the case of the first embodiment, even if the external vibration is applied, the locking means 7 is locked and the generator 3 with engine and the frame 1 are integrally fixed, so that the generator with engine is fixed. 3 does not vibrate separately from the frame 1, and it is possible to surely prevent the generator 3 with engine and the anti-vibration rubber 2 from being damaged by external vibration.

A second embodiment according to the present invention will be described with reference to FIG. FIG. 3 is a sectional view of a second embodiment according to the present invention, showing an unlocked state. The locking means 18 is the bracket 13
And bracket 14, bracket 13 and bracket 1
Hollow vibration-proof rubber 12 that is fixed by baking to 4
A round bar 15 concentric with the hollow part of the vibration-proof rubber 12 and fixed to the bracket 14 shorter than that; It consists of a nut 17 with a mating knob.

The operation of the second embodiment will be described. When the nut 17 with knob is sufficiently tightened, the bracket 13 and the bracket 14 are coupled by the lock means 18 and the lock means 18
Is locked. When the nut 17 with knob is sufficiently loosened, the bracket 13 and the bracket 14 are released from the connection by the locking means 18, and the locking means 18 is unlocked. The operation of the locking means 18 in the locked state and the unlocked state is the same as the operation of the locking means 7 in the first embodiment in the locked state and the unlocked state, and therefore the description thereof is omitted.

[0027]

According to the present invention, instead of the stopper device and the shake restraining device as the steady rest means for suppressing the usual steady swing or more, the actuation is performed so as not to independently generate the acceleration G by the external vibration. By mounting the locking means for locking the generator etc. from the beginning, it is possible to reliably prevent the engine generator etc. and the anti-vibration rubber from being damaged by external vibration.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a first embodiment according to the present invention.

FIG. 2 is a view on arrow P of FIG.

FIG. 3 is a sectional view of a second embodiment according to the present invention.

FIG. 4 is a diagram of a stopper device according to a first conventional example.

5 is a view on arrow A of FIG.

FIG. 6 is a diagram of a shake preventing device of a second conventional example.

[Explanation of symbols]

1 ... Frame, 2 ... Anti-vibration rubber, 3 ... Generator with engine,
4 ... Main body, 5, 6, 13, 14 ... Bracket, 7, 18
... locking means, 8, 11 ... knob bolts, 9 ... lock plate, 10 ... notches, 17 ... knob nuts, 15 ... round bar, 16 ... threaded rod.

Claims (3)

[Claims] 1. A vibration generator or the like supported on a frame (1) via a vibration damping rubber (2), wherein a vibration proof is provided between the main body (4) of the vibration generator or the like and the frame (1). Power generation supported by anti-vibration rubber having locking means (7) and (18) that lock and lock the main body and frame together by blocking the action of rubber (2) Steady stop structure for machines, etc. 2. An engine generator or the like supported on a frame via a vibration-proof rubber, and brackets (5) (6) attached to the body (4) of the engine generator and the frame (1), respectively. , (13) (14), anti-vibration rubber (2), (12) baked and fixed between the brackets, and locking means (7) (18) for locking and unlocking the brackets. A steady rest structure for engine generators, etc. supported by an anti-vibration rubber. 3. An engine generator or the like supported on a frame via a vibration-proof rubber, wherein brackets (5), (6) mounted on the body (4) of the engine generator and the frame (1), respectively. (13) (14), a vibration-proof rubber (2), (12) baked and fixed between the brackets, and a lock means for locking and unlocking the bracket, wherein the lock means is Bracket (5)
Intervening members (9) and (15) fixedly or releasably attached between (6), (13) and (14), and fixing members (8) (11), (for fixing the intervening member to the bracket). 16) (1
7) A steady rest structure for an engine generator or the like supported by a vibration proof rubber having