JP2011252561A - Vibration control supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent respective parts of a vibration control supporting device from hitting to cause abnormal sound or cause breakage or deformation even if an intense vibration occurs in vertical direction and in every horizontal 360-degree direction, while allowing a vibration control function enhancing means to be easily attached as required.SOLUTION: An engine foot 1 is supported on the upper surface of an attaching base 2, with a vibration control rubber 3 in between. A first rectangular vibration control pad 11 and a second circular vibration control pad 12 are arranged on the engine foot 1 over a fixing bolt 5 of the vibration control rubber 3, and they are tightened and fixed with a fixing nut 13. A stopper 10 containing a through hole around the second vibration control pad 12 is placed on the first vibration control pad 11 in such a condition where the second vibration control pad 12 is arranged in the through hole, and is then secured to a stopper bracket provided upright on the upper surface of the attaching base 2.

Description

  The present invention relates to an anti-vibration support device that can be used as a support device for mounting an engine of an engine-driven work machine such as an engine-driven generator or an engine-driven welder or a work machine body to a housing or the like.

  In engine-driven work machines such as engine-driven generators and engine-driven welders, the engine and work machine main body vibrate during operation. Therefore, an anti-vibration support device is provided in the part that supports them on the base, and the engine and work machine main body. The vibration transmitted from the base to the base is suppressed.

  For example, as shown in a front view and a side view in FIG. 9, vibration transmitted from the engine or work implement body to the base with an anti-vibration rubber 3 interposed between the engine foot 1 and the base 2 that supports the foot 1. I try to suppress it. The engine foot 1 is firmly fixed to the engine (not shown) by bolts that pass through the bolt holes 1d. The anti-vibration rubber 3 has circular iron plates bonded to both upper and lower surfaces of a cylindrical rubber main body, and fixing bolts 4 and 5 are erected from the both iron plates in the vertical direction. The lower end of the anti-vibration rubber 3 is fixed to the base 2 of the engine-driven work machine housing with a nut or the like (not shown) by one fixing bolt 4. The horizontal plate 1 b of the engine foot 1 is fixed by passing a bolt hole through the tip of the fixing bolt 5 and tightening with a fixing nut 6.

  In this anti-vibration support device, while vibration of the engine is absorbed by the anti-vibration rubber 3, when the amplitude of the vibration becomes large, the side portion or the tip portion of the base 2 hits the lower end portions P and Q of the engine foot 1, The amplitude is regulated so as not to become larger than a predetermined value.

  Further, as shown in FIG. 10, there is a means for restricting the amplitude not to become larger than a predetermined value. In addition, in FIG. 10, (B) is a YY sectional view of (A). This anti-vibration support device is shown in the case of supporting a generator, and the generator foot 8 is firmly fixed to a generator (not shown). The point of absorbing vibration by the vibration isolating rubber 3 is the same as that of FIG. 9, but the amplitude is regulated by the steady rest 7 on the upper surface of the base 2. The steady rest 7 has a shape in which a rectangular plate is bent at a right angle. When the amplitude of the generator foot 8 is increased, the side or tip of the generator foot 8 hits the steady rest 7 and the amplitude is increased. It does not become larger than a predetermined size.

  Furthermore, in the anti-vibration support device disclosed in Patent Document 1, a flat stopper is held by a bolt with a bi-elastic member for absorbing vibration between the base and a bolt, and is attached to an intermediate portion of the bi-elastic member. An engine mounting plate is fitted, and a locking portion is integrally provided at the tip of the mounting plate with a gap between each of the base and the flat stopper. According to this anti-vibration support device, the vibration of the engine is absorbed by the split elastic member, and the amplitude can be regulated by the locking portion and the flat stopper.

JP 2003-90387 A

By the way, there are cases where a portable engine-driven work machine is mounted on a vehicle, a freight car, a ship, and the like. In such a case, the vehicle, the freight car, the ship, etc. are in the vertical 360 ° direction. As a vibration-proof support device for engine-driven work machines, not only vibrations generated from the engine or work machine body but also vibrations transmitted from the vehicle, freight car, ship, etc. to the engine or work machine body are suppressed. There is a need to.

  In order to suppress vibration transmitted from the vehicle, freight car, ship, etc. to the engine-driven work machine with the vibration isolating support device as shown in FIGS. Therefore, it is necessary to suppress it, but the cost is increased correspondingly, and it is a useless cost increase for a user who does not use it on a vehicle, a freight car, a ship or the like. Moreover, in the vibration isolating support device as shown in FIGS. 9 and 10 and the vibration isolating support device shown in Patent Document 1, due to the gap between the base and the engine foot and the gap between the base and the flat plate stopper and the locking portion, Although the amplitude is controlled more than a predetermined level, if a vehicle, a freight car, a ship, etc. shakes greatly, the base and the engine foot, the base, the flat stopper, and the locking part collide with each other, and an abnormal noise is generated. There is also a problem that the base, the engine foot, the flat stopper, the locking portion, etc. may be damaged or deformed.

   In view of such problems, the present invention can easily add vibration suppression function enhancing means as necessary, and even if there is a large vibration in the vertical direction or the horizontal 360 degree direction, each part of the vibration isolating support device will collide. The purpose of this is to prevent abnormal sounds from being generated, damaged or deformed.

     In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is that a fixed bolt is respectively attached to a supported object mounting bracket fixed to a supported object and having a horizontal plate-like support part, and upper and lower end surfaces of the columnar rubber body. Is composed of an anti-vibration rubber and a plate-like elastic member that is fixed to the mounting base by a lower fixing bolt, and that fixes the support portion of the support mounting bracket by an upper fixing bolt, and has a through hole in the center. A first vibration isolating pad disposed on the upper surface of the support portion of the support mounting bracket through the tip of the upper fixing bolt in the through hole, and a circle having a smaller diameter than the first vibration isolating pad. A second anti-vibration pad made of a plate-like elastic member, having a through hole at the center, and being disposed on the first anti-vibration pad through the tip of the upper fixing bolt in the through hole; The first vibration isolating pad is screwed into the upper end of the upper fixing bolt. And a fixed nut for pressing and fixing the second vibration isolation pad from above, a stopper bracket erected on the upper surface of the mounting base, and a plate-like shape provided with a circular through hole of a size surrounding the second vibration isolation pad And a stopper fixed to the stopper bracket in a state where the second vibration-proof pad is disposed in a circular through hole.

   Further, the invention according to claim 2 of the present application is the invention according to claim 1, wherein the steady rest fitting for restricting the amplitude of the supported attachment fitting, which is erected on the upper surface of the attachment base, It is used as a stopper bracket.

   The invention according to claim 3 of the present application is the invention according to claim 1 or 2, wherein a nut having a hook-shaped pressing seat on a side portion and a cylindrical pressing seat on a lower portion is used as the fixing nut. It is characterized by that.

The present invention has the following effects.
That is, in the first aspect of the present invention, the supported object mounting bracket is supported on the upper surface of the mounting base with the anti-vibration rubber interposed therebetween, and is passed through the fixing bolt protruding above the supported object mounting bracket. 1 vibration-proof pad and disk-shaped 2nd vibration-proof pad are arrange | positioned, they are fastened and fixed with a fixing nut, and the stopper which has a through-hole surrounding the 2nd vibration-proof pad is 2nd in a through-hole. The anti-vibration pad is placed on the first anti-vibration pad and fixed to a stopper bracket standing on the upper surface of the mounting base. As a result, vibration suppression function enhancing means can be easily added as necessary, and even if there is a large vibration in the vertical direction or horizontal 360 degree direction, each part of the vibration isolating support device collides with it and abnormal noise is generated or damaged , No deformation occurs.

  According to a second aspect of the present invention, there is provided the anti-vibration support device according to the first aspect, wherein the anti-vibration bracket for erecting the amplitude of the supported mounting bracket is provided on the upper surface of the mounting base. Since it is used as the stopper bracket, the existing steady rest metal fitting can be used effectively, and there is no need to separately provide a stopper bracket.

  According to a third aspect of the present invention, in the anti-vibration support device according to the first or second aspect, the fixed nut includes a hook-shaped pressing seat on a side portion and a cylindrical pressing seat on a lower portion. Therefore, it is possible to press the spring washer and fix the first vibration isolation pad and the second vibration isolation pad while appropriately pressing them.

It is a figure which shows the vibration isolating support apparatus which concerns on 1st Example of this invention. It is a figure which shows the principal part cross section of FIG. It is a figure which shows an engine foot. It is a figure which shows a stopper bracket. It is a figure which shows a stopper. It is a figure which shows a vibration isolating pad. It is a figure which shows a fixing nut. It is a figure which shows the vibration isolating support apparatus which concerns on 2nd Example of this invention. It is a figure which shows a 1st prior art example. It is a figure which shows a 2nd prior art example.

   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing the anti-vibration support device according to the first embodiment of the present invention by using a trigonometric method, and FIG. 1 and 2, reference numerals 1 to 5 correspond to those in FIG. 9, 9 is a stopper bracket, 10 is a stopper, 11 is a first vibration isolation pad, 12 is a second vibration isolation pad, and 13 is A fixing nut, 14 is a flat washer, and 15 is a spring washer.

  As shown in FIG. 3, the engine foot 1 has a horizontal plate 1b joined to the back plate 1a at a right angle, and a side plate 1c integrally joined to the sides thereof. The back plate 1a is provided with through holes 1d, 1d, 1d, and 1d for passing bolts for fixing the engine, and the horizontal plate 1b is provided with a bolt hole 1e for passing the fixing bolts 5 of the anti-vibration rubber 3. Is provided. Although not shown in FIG. 1, the engine foot 1 and the engine are fixed through bolts through the through holes 1d, 1d, 1d, and 1d.

  Further, as shown in FIG. 4, the stopper bracket 9 is formed by integrally joining a reinforcing plate 9b in the central vertical direction of an L-shaped plate 9a formed by bending a metal plate, and forming a bottom portion of the L-shaped plate 9a. Are provided with bolt holes 9c, 9c for fixing the stopper bracket 9 to the base 2, and bolt holes 9d, 9d for fixing the stopper 10 at the upper part. Such a stopper bracket 9 is fixed to the upper surface of the base 2 by bolts passed through the bolt holes 9c, 9c. In addition, the code | symbol 9e in FIG. 4 is a through-hole.

  As shown in FIG. 5, the stopper 10 is formed by laminating an upper plate 10b formed so as to have a flat U-shaped bottom surface on a lower plate 10a formed by bending a metal plate into an L shape. The bottom is provided with a circular anti-vibration pad storage hole 10c, and the rear part is welded with nuts 10d and 10d, which pass through the bolt holes 9d and 9d of the stopper bracket 9. The stopper 10 is fixed to the stopper bracket 9 by screwing the bolts to the nuts 10d and 10d and tightening them.

  The first vibration isolation pad 11 and the second vibration isolation pad 12 are made of an elastic material such as rubber, and the first vibration isolation pad 11 has a rectangular shape as shown in FIG. A fixed nut storage hole 11a having a size capable of storing the lower portion of the fixed nut 13 is provided. Further, as shown in FIG. 6B, the second vibration isolation pad 12 has a circular shape, and a fixed nut storage hole 12a having the same diameter as the circular hole 11a of the first vibration isolation pad 11 is provided at the center thereof. It has been.

  Such first anti-vibration pad 11 is disposed on the engine foot 1 mounted on the anti-vibration rubber 3 by the fixing bolt 5, and further overlapped on the first anti-vibration pad 11. Two anti-vibration pads 12 are provided.

  The fixing nut 13 is screwed into the tip of the fixing bolt 5 of the vibration isolating rubber 3, and as shown in FIG. 7, is formed into a bag shape as a whole and is formed below the hexagonal top portion 13a. The lower part 13c has a cylindrical shape, and the length of the cylindrical lower part 13c is equal to the thickness of the first vibration isolation pad 11 and the second vibration isolation pad 12. The length is obtained by subtracting the thickness of the flat washer and the thickness after tightening the spring washer, and the diameter can be inserted into the fixing nut housing holes 11a and 12a of the first vibration isolation pad 11 and the second vibration isolation pad 12. Has been.

  The fixing nut 13 is attached to the front end of the fixing bolt 5 after the flat washer 14 and the spring washer 15 are attached to the fixing bolt 5 with the first vibration isolation pad 11 and the second vibration isolation pad 12 disposed. Screw in. In this state, the stopper 10 is mounted so as to pass the vibration-proof pad housing hole 10c through the second vibration-proof pad 12, and the stopper bracket 9 is bolted to complete the assembly of the vibration-proof support device.

  In this anti-vibration support device, the vibration in the vertical direction is absorbed by the elasticity of the anti-vibration rubber 3 and the first anti-vibration pad 11, and the vibration in the front-rear direction and the horizontal direction is absorbed by the elasticity of the second anti-vibration pad 12. Absorb. At that time, even if the vibration is large, both the vertical vibration and the horizontal vibration are restricted by the stopper 10, but the first prevention is provided between the engine foot 1 and the stopper 10 and between the fixing nut 13 and the stopper 10. Since the vibration pad 11 and the second vibration isolation pad 12 are interposed, the engine foot 1, the fixing nut 13 and the stopper 10 do not directly collide with each other, and abnormal noise is generated, or damage or deformation occurs. There is no. In addition, by using the two anti-vibration pads of the first anti-vibration pad 11 and the second anti-vibration pad 12 in the vertical direction and the horizontal direction, the swing width can be adjusted separately. In addition, since the second vibration-proof pad 12 has a circular shape, it can be steady in all directions of 360 degrees horizontally.

  The engine foot 1, base 2, anti-vibration rubber 3 and fixing bolts 4, 5 are the same as those of the conventional anti-vibration support device shown in FIG. In this case, the vibration isolating support device having the conventional structure can be used as it is. On the other hand, when the engine-driven work machine is used in an environment subject to large vibrations such as when used on a vehicle, a freight car, a ship, etc., a stopper is attached to the conventional vibration-proof support device as shown in FIG. This can be done by simply adding the bracket 9, the stopper 10, the first vibration isolation pad 11, the second vibration isolation pad 12, the fixing nut 13, and the like.

Furthermore, the first anti-vibration pad 11 and the second anti-vibration pad 12 may deteriorate and deteriorate in performance when used for a long time. When it is deteriorated, it can be easily replaced with a new one by removing the fixing nut 13 and the stopper 10.

  FIG. 8 is a view showing a vibration isolating support device according to a second embodiment of the present invention, and FIG. 8B is a cross-sectional view taken along line XX of FIG. The reference numerals correspond to those in FIGS. As in the case of the vibration isolating support device having the conventional structure shown in FIG. 10, when the steady rest 7 is provided on the upper surface of the base 2, the stopper 10 can be fixed to the steady rest 7. The rest of the configuration is the same as that of the first embodiment, and even if the vibration is large, no abnormal noise is generated, no damage or deformation occurs, and the conventional anti-vibration support device includes the stopper 10 and the first anti-vibration device. It is possible to respond by simply adding the pad 11, the second vibration isolation pad 12, the fixing nut 13, etc., and the first vibration isolation pad 11 and the second vibration isolation pad 12 can be easily replaced. It is the same.

  In each of the above embodiments, a case where a bag-like nut is used as the fixing nut 13 has been described. However, if the fixing bolt 5 has a sufficient length, a through-type nut may be used, and the length of the cylindrical portion may be increased. The size may be changed depending on the degree of pressing.

DESCRIPTION OF SYMBOLS 1 ... Engine foot 2 ... Base 3 ... Anti-vibration rubber 4, 5 ... Fixing bolt 7 ... Stabilizer 8 ... Generator foot 9 ... Stopper bracket 10 ... Stopper 11 ... First anti-vibration pad 12 ... Second anti-vibration pad 13 ... Fixing nut 14 ... Flat washer 15 ... Spring washer

Claims (3)

A supported object mounting bracket fixed to the supported object and having a horizontal plate-shaped support part;
Anti-vibration rubbers, which are respectively provided with fixing bolts on the upper and lower end surfaces of the columnar rubber main body, fixed to the mounting base with the lower fixing bolts, and fixing the support portion of the support mounting bracket with the upper fixing bolts;
A first anti-vibration pad made of a plate-like elastic member, having a through hole in the center, and disposed on the upper surface of the support portion of the support mounting bracket through the tip of the upper fixing bolt in the through hole When,
It consists of a disk-shaped elastic member having a smaller diameter than the first vibration isolation pad, and has a through hole at the center, and is disposed on the first vibration isolation pad through the tip of the upper fixing bolt. A second anti-vibration pad,
A fixing nut that is screwed into an upper end portion of the upper fixing bolt and presses and fixes the first vibration isolation pad and the second vibration isolation pad from above;
A stopper bracket erected on the upper surface of the mounting base;
A stopper having a plate-like portion provided with a circular through-hole having a size surrounding the second vibration-proof pad, and being fixed to the stopper bracket in a state where the second vibration-proof pad is disposed in the circular through-hole. An anti-vibration support device comprising:   2. The anti-vibration support device according to claim 1, wherein an anti-skid metal fitting for restricting an amplitude of the support attachment metal fitting provided upright on the upper surface of the attachment base is used as the stopper bracket. .   The anti-vibration support device according to claim 1 or 2, wherein a nut having a hook-shaped push seat on a side portion and a cylindrical push seat on a lower portion is used as the fixed nut.

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