JPH0676744U - Anti-vibration support device for engine generator - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the elastic body from being damaged and to reduce the protrusion height of the fastener when the vibration-damping support device of the engine generator is subjected to abnormally excessive vibration. [Structure] Opposing 2 by sandwiching an elastic body 1 for absorbing vibration
Fasteners 4,5 are provided on the support plates 2.3, respectively.
One of the fasteners 4 and 5 is provided with a recess 8 on its head 8a.
Recessed head bolt 8 provided with b and tightening nut 9 screwed into it
And the other is formed by the tightening bolt 10 and the tightening nut 11 screwed to the tightening bolt 10. The head portion 8a of the concave bolt 8 is positioned inside the elastic body 1 inside the two supporting plates 2 and 3 facing each other. Either one of the pedestal 7 and the engine generator body 6 is fastened with the recessed bolt 8 and the fastening nut 9 screwed thereto, and the tip portion 10 of the fastening bolt 10 is also fastened.
A is made to face the concave portion 8b of the concave bolt 8, and the tightening bolt 10 and the tightening nut 11 fasten either the engine generator body 6 or the pedestal 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an anti-vibration support device for an engine generator.

[0002]

[Prior art]

 2. Description of the Related Art Some conventional vibration isolating support devices for engine generators are configured as follows, as shown in FIG. 4, for example. That is, the fasteners 4 and 5 are provided on the two support plates 2.3 facing each other with the elastic body 1 such as rubber for absorbing vibration interposed therebetween. Then, for example, the engine generator main body 6 is fastened to one fastener 4 of the fasteners 4 and 5, and the frame 7 such as the pipe frame 20 is fastened to the other fastener 5 to support each other in a vibration-proof manner. It was made. The above-mentioned anti-vibration support device is of a round type or a square type, and the fasteners 4 and 5 both enclose the head of the bolt inside the elastic body 1 and project the screw part of the bolt on both sides. It is formed into a curved shape and can be tightened with the tightening nuts 9 and 11.

[0003]

[Problems to be solved by the device]

 The above conventional technique has the following problems. The above-described anti-vibration support device is such that the elastic body 1 such as rubber for absorbing vibration is sandwiched between the two opposing support plates 2 and 3, and the engine generator main body 6 and the pedestal 7 are connected to each other by the fasteners 4 and 5. Has been tightened. For this reason, if abnormally excessive vibration is received during transportation, the elastic body 1 such as rubber may be excessively compressed by the heads of the bolts of the fasteners 4 and 5 and may be damaged. It is necessary to install a steady rest separately. Further, since the screw parts of the fasteners 4 and 5 are projected on both sides, when the engine generator main body 6 is fastened to the frame 7, the engine generator main body 6 must be lifted extra by the protruding height. However, the work of avoiding the interference of each part is troublesome, and it is necessary to consider it when designing. An object of the present invention is to prevent the elastic body from being damaged by an abnormally large vibration with a simple structure and to reduce the protruding height of the fastener.

[0004]

[Means for Solving the Problems]

 The present invention is obtained by adding the following improved structure to the above-mentioned conventional technique in order to achieve the above-mentioned object, as shown in FIG. 1, for example. That is, one of the fasteners 4 and 5 is formed by a recessed head bolt 8 having a recessed portion 8b in its head portion 8a and a tightening nut 9 that is screwed into the recessed head bolt 8, and the other is a tightening bolt 10. It is formed with a tightening nut 11 that is screwed onto it. Then, the head portion 8a of the concave bolt 8 is positioned inside the elastic body 1 inside the two supporting plates 2 and 3 facing each other. Further, either the pedestal 7 or the engine generator body 6 is fastened by the recessed bolt 8 and the tightening nut 9 screwed thereto, and the tip portion 10a of the tightening bolt 10 is fixed to the recessed bolt. One of the engine generator main body 6 and the pedestal 7 is fastened by the tightening bolt 10 and the tightening nut 11 so as to face the concave portion 8 b of 8.

[0005]

[Action and effect]

 The present invention is configured as described above, and acts and effects as follows. One of the fasteners 4 and 5 is formed with a concave head bolt 8 and a tightening nut 9, and the other is formed with a tightening bolt 10 and a tightening nut 11, respectively, and the head portion of the concave head bolt 8 is formed. 8a and a tightening nut 11 are attached inside the elastic body 1 such as rubber for absorbing vibration. Then, one of the engine generator body 6 and the pedestal 7 is fastened with the tip 10a of the tightening bolt 10 facing the recess 8b of the recessed bolt 8. For this reason, when the elastic body 1 for absorbing vibration is greatly contracted, the tip end portion 10a of the tightening bolt 10 fits inside the recessed portion 8b of the recessed head bolt 8 and comes into contact therewith. Even if a deviated force is applied, since it is supported by the inner wall of the recess 8b, there is no risk of the elastic body 1 being damaged by abnormally large vibration. Furthermore, since the threaded portion of each fastener 4, 5 is only small on one side of the recessed head bolt 8 side before fastening, it is unnecessary to lift the engine generator body 6 excessively and avoid interference with each part. Less hassle. As a result, it is possible to prevent the elastic body from being damaged when it is subjected to an abnormally large vibration during transportation, and to reduce the protruding height of each fastener.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of an anti-vibration support device for an engine generator, FIG. 3 (A) is a perspective view of a pipe frame type engine generator, FIG. 3 (B) is an assembly diagram of two half frames, and FIG. 3C is a side view of the engine generator, and FIG. 3D is a perspective view of the frame binding tool. In the figure, the engine generator main body 6 is a half-frame type for protecting the front and rear and right and left of the engine generator main body 6 as shown in FIG. 3 (A), or the upper and lower front / rear as shown in FIG. 3 (C). A frame 7 of a full-frame type pipe frame 20 for protecting the left and right sides is supported by a vibration-proof support device 30 in a vibration-proof manner. Here, as shown in FIG. 3 (B), two pieces of the same type of the half frame type pipe frame 20 are piled up in the opposite directions to each other, and the upper and lower half halves are connected by the frame tie 21 as shown in FIG. 3 (D). The frames are bundled together to form a split full frame pipe frame. Therefore, the upper and lower frames can be manufactured as common parts and stacked in the same direction, so the storage space can be reduced. As a result, it is possible to reduce manufacturing costs, transportation costs, storage space, etc., compared to a single full-frame pipe frame that cannot be divided. As shown in FIG. 1, the anti-vibration support device 30 of the engine generator has fasteners 4 and 5 attached to two support plates 2 and 3 which face each other with an elastic body 1 such as a rubber for absorbing vibration interposed therebetween. Is provided. Then, either one of the fasteners 4 and 5, for example, the fastener 4 is formed by a recessed head bolt 8 having a recessed portion 8b in its head portion 8a and a tightening nut 9 screwed to the recessed bolt 8. The other fastener 5 is formed by a tightening bolt 10 and a tightening nut 11 screwed to the tightening bolt 10. Then, the head portion 8a of the concave head bolt 8 serving as the one fastener 4 is positioned inside the elastic body 1 inside the two opposing support plates 2 and 3. Further, any one of the engine generator body 6 and the pedestal 7, for example, the pedestal 7, is fastened by the concave head bolt 8 and the tightening nut 9 screwed thereto. The tip portion 10a of the tightening bolt 10 serving as the other fastener 5 is made to face the recess 8b of the recessed bolt 8, and the tightening bolt 10 and the tightening nut 11 allow the engine generator body to move. 6 are fastened together to support each other in a vibration-proof manner.

FIG. 2 shows another embodiment of the present invention and corresponds to FIG. In the above-mentioned embodiment, instead of forming the other fastener 5 with the tightening bolt 10 and the tightening nut 11 screwed to the tightening bolt 10, the other fastener 5 has a protrusion 12b on its head 12a. It is formed by a bolt 12 and a tightening nut 11 that is screwed into the bolt 12. Then, either the engine generator main body 6 or the pedestal 7, for example, the engine generator main body 6 is fastened with the concave head bolt 8 as the one fastener 4 and the tightening nut 9 screwed thereto. There is. Further, the protruding portion 12b of the protruding bolt 12 as the other fastener 5 is made to face the concave portion 8b of the concave head bolt 8, and the protruding bolt 12 and the tightening nut 11 screwed thereto are used to The gantry 7 is fastened.

[Brief description of drawings]

FIG. 1 is a sectional view of an anti-vibration support device for an engine generator according to an embodiment of the present invention.

FIG. 2 is a view corresponding to FIG. 1, showing another embodiment of the present invention.

3 shows an embodiment of the present invention, FIG. 3 (A) is a perspective view of an engine generator, FIG. 3 (B) is an assembly diagram of two half frames, and FIG. 3 (C) is an engine generator. Side view, FIG. 3 (D)
FIG. 4 is a perspective view of a frame binding tool.

FIG. 4 shows a conventional example, FIG. 4 (A) is an assembly perspective view of a pipe frame type engine generator, and FIG. 4 (B) is a cross-sectional view of a vibration isolation support device.

[Explanation of symbols]

1 ... Elastic body, 2.3 ... Support plate, 4.5 ... Fastener, 6 ... Engine generator main body, 7 ... Stand, 8 ... Recessed head bolt, 8a ...
Head portion, 8b ... Recessed portion, 9/11 ... Tightening nut, 10 ... Tightening bolt, 10a ... Tip portion.

Claims (1)

[Scope of utility model registration request] 1. Fasteners (4.5) are provided on two support plates (2, 3) facing each other with an elastic body (1) for absorbing vibration interposed therebetween, and the fasteners (4.5) described above are provided. ) One of the fasteners (4) is fastened with one of the engine generator body (6) and the mount (7), and the other fastener (5) is secured with the mount (7) and the engine generator body (6). In an anti-vibration support device for an engine generator in which any one of them is fastened to support each other in an anti-vibration manner, one of the fasteners (4, 5) is attached to its head (8a).
It is formed by a concave head bolt (8) having a recess (8b) in it and a tightening nut (9) that is screwed into it, and the other is a tightening bolt (10) and a tightening nut (11) that is screwed into it. And the head (8a) of the concave head bolt (8) is located inside the elastic body (1) inside the two opposing support plates (2, 3), A bolt (8) and a tightening nut (9) screwed to the bolt (8) are used to fasten either the pedestal (7) or the engine generator body (6), and the tip of the tightening bolt (10) ( 1
0a) facing the concave portion (8b) of the concave head bolt (8),
An anti-vibration support device for an engine generator, characterized in that any one of the engine generator body (6) and the mount (7) is fastened by the tightening bolt (10) and the tightening nut (11). .