JPH0731242U - Anti-vibration device for aircraft - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to reduce the cost by simplifying the vibration prevention device. [Structure] A device for installing the aircraft on the floor surface to prevent vibration of the aircraft by installing it between the aircraft and the floor surface. Brackets attached to multiple places in the lower part around the aircraft An adjusting bolt 22 that can be screwed to adjust the height in the vertical direction, and is formed of a rubber material into a substantially plate shape.
A base plate 31 having a pressure receiving plate concave portion 41 on its upper surface and a base plate 31 fitted in the pressure receiving plate concave portion and having an adjusting bolt 22 at the center of the upper surface.
Bolt receiving recess 51 with which the lower end surface of the bolt fits and abuts
And a pressure receiving plate 32 made of metal.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing vibration of machine bodies of various machine devices such as a molding device such as an injection molding machine, a machine tool, and a press machine.

[0002]

[Prior art]

 Conventional anti-vibration devices have a base plate made of rubber material in the shape of a plate, an iron plate placed on the top surface of the base plate, the top and side surfaces of the iron plate and the base plate, and a screw hole in the center. And a bolt which is screwed into a screw hole of the threaded cover and whose lower end surface is in contact with the upper surface of the iron plate.

The brackets that are horizontally attached to the lower part of the periphery of the machine body are provided with through holes through which the bolts are inserted, and the upper surface of the threaded cover contacts the lower surface of the bracket. The main body of the anti-vibration device is located in and the bolt is screwed into the screw hole through the insertion hole of the bracket.

By rotating the bolt to screw it into the screw hole, the threaded cover rises, and the bracket rises accordingly, so that the height position of each part of the machine body can be adjusted. The vibration generated in the airframe is mostly absorbed by the cushioning action of the base plate, which reduces the vibration of the airframe and the propagation of the vibration to the floor surface.

[0005]

[Problems to be solved by the device]

 However, the above-described conventional vibration preventing device requires a threaded cover having a screw hole for screwing with a bolt. In addition, a large load is applied to the screw holes of the threaded cover, so in order to obtain a sufficient screw length, use an iron plate with sufficient thickness, draw around the screw holes, or weld the nuts. It was necessary to install it due to such reasons. As a result, the cost of the cover with screws raises the overall cost, and the cost is high as a whole, and the weight is large, which is inconvenient for transportation.

Generally, the bracket provided on the machine body is provided with two holes, a screw hole for an adjusting bolt (adjuster bolt) and an insertion hole for an anchor bolt. With the anti-vibration device, the adjustment bolts screwed into the screw holes are allowed to play without being used, and a bolt different from the adjustment bolts is inserted through the insertion hole for the anchor bolt and screwed into the threaded cover. There is. Therefore, the adjusting bolt screwed into the screw hole is wasted, and the width of the bracket is unnecessarily large.

The present invention has been made in view of the above problems, and an object of the present invention is to simplify the vibration prevention device and reduce the cost.

[0008]

[Means for Solving the Problems]

 The device according to the invention of claim 1 is a device for preventing vibration of the machine body by installing it between the machine body and the floor surface when installing the machine body on the floor surface. Adjusting bolts that can be vertically adjusted by being screwed into brackets attached to multiple places in the lower part of the body, and a rubber plate are formed into a roughly plate-like shape. And a metal pressure plate that is fitted into the pressure receiving plate recess and has a bolt receiving recess where the lower end surface of the adjusting bolt fits and abuts in the center of the upper surface. Composed.

The device according to the second aspect of the present invention is configured such that a metal ring for preventing horizontal expansion of the base plate is integrally embedded in the peripheral surface of the base plate.

[0010]

[Action]

 As the adjustment bolt is rotated and screwed into the bracket, the bracket rises, which adjusts the height position of that part of the airframe. The lower end surface of the adjusting bolt presses the pressure receiving plate via the bolt receiving recess, and evenly presses the entire upper surface of the base plate.

In the case where the ring is provided on the peripheral surface of the base plate, horizontal expansion due to pressing of the base plate by the load of the machine body is prevented, and the height position is stabilized.

[0012]

【Example】

 1 is a sectional front view of a main body 11 of a vibration preventive device 1 according to a first embodiment of the present invention, FIG. 2 is a partial sectional plan view of the main body 11 of the vibration preventive device 1, and FIG. It is a front view which shows a state.

When installing the machine body MF such as an injection molding machine on the floor surface FL, the vibration prevention device 1 is mounted between the machine body MF and the floor surface FL so that the machine body MF can be installed on the floor surface FL. This is a device for stabilizing the grounded state and preventing vibration of the airframe MF.

The vibration prevention device 1 is provided with adjusting bolts 22 that are respectively screwed into brackets 21 attached to a plurality of lower portions around the body MF to adjust the height in the vertical direction, and each adjusting bolt 22. And a main body 11 that abuts and supports the lower end surface of the. A lock nut 22a is screwed on the adjusting bolt 22.

The main body 11 includes a base plate 31, a pressure receiving plate 32, a ring 33, and a cover 34. The base plate 31 is formed of a rubber material such as urethane rubber having a high hardness into a substantially rectangular plate shape in a plan view, and a rectangular pressure receiving plate recess 41 having a shape substantially similar to the outer peripheral shape is provided on the upper surface thereof. ing. The lower surface of the base plate 31 and the upper surface of the pressure receiving plate recess 41 are in the shape of a grid, and the spaces between the grids are substantially square recesses 42 and 43. These recesses 42 and 43 are arranged in a shifted state so as not to overlap each other in plan view.

The ring 33 is used to prevent the base plate 31 from expanding in the horizontal direction when a load is applied to the base plate 31. For example, a square pipe made of steel or the like is used with an appropriate width dimension. A sliced piece is used and is embedded and integrally formed when the base plate 31 is formed.

The pressure receiving plate 32 is formed by cutting an iron plate having a thickness of about 5 to 9 mm into a rectangular shape, and the lower end surface of the adjustment bolt 22 is fitted into and abuts on the central portion of the upper surface of the bolt receiving concave portion 51. Are provided by press working or the like. The pressure receiving plate 32 is fitted in the pressure receiving plate concave portion 41 of the base plate 31, and these are not displaced in the horizontal direction, and the upper edge of the pressure receiving plate concave portion 41 covers the edge of the pressure receiving plate 32. Therefore, the pressure receiving plate 32 does not easily come out of the base plate 31.

The cover 34 has an aesthetic appearance by covering the upper surfaces of the base plate 31 and the pressure receiving plate 32, and is appropriately colored such as yellow to alert the operator to improve safety. It is for. The cover 34 is made of synthetic resin and has a rectangular shape in a plan view, and an insertion hole 61 through which the adjustment bolt 22 is inserted is provided in a central portion of the cover 34.

Therefore, by rotating the adjusting bolt 22 to adjust the height position, the height position of the bracket 21 is adjusted, and the load applied to each main body 11 can be equalized and stabilized. At the same time, due to the cushioning effect of the base plate 31 due to its elasticity, the vibration generated in the machine body MF is almost absorbed, and the vibration of the machine body MF is reduced and the propagation of the vibration to the floor surface FL is reduced.

In the main body 11, since the recesses 42 and 43 are provided in a state of being displaced from each other, the cushioning effect due to the bending of the base plate 31 is good, and the load acting on the adjusting bolt 22 is the pressure receiving plate 32. By this, the base plate 31 is evenly distributed over almost the entire surface. The ring 33 prevents the base plate 31 from expanding in the horizontal direction and stabilizes the height dimension of the main body 11 for a long period of time. Further, since the base plate 31 is rectangular and the periphery is linear, dust and the like accumulated around the periphery can be easily swept out by a broom and the floor FL can be easily cleaned.

Since the main body 11 has a simple structure and is easy to assemble with a small number of constituent parts, the main body 11 can be manufactured at low cost, and the cost of the vibration prevention device 1 can be reduced. it can.

FIG. 4 is a sectional front view of the main body 11a of the second embodiment according to the present invention. In the main body 11a of the second embodiment, the height of the upper surface of the base plate 31a is slightly lower than the upper surface of the pressure receiving plate 32, and the cover 34 as in the first embodiment is not provided. Moreover, the recess 43 as in the first embodiment is not provided on the upper surface of the pressure receiving plate recess 41 of the base plate 31a.

According to this main body 11a, the structure is simpler than that of the main body 11 of the first embodiment, and the cost can be reduced. In the above-described embodiment, the vibration preventing devices 1 are provided at four locations around the machine body MF, but they may be provided at three locations or less or at five locations or more. Although the main body 11 has a quadrangular shape, it may have a round shape, an oval shape, or any other shape. Although the lower surface of the base plate 31 is projected in a grid pattern, it may be provided with grooves in a grid pattern, or may be provided with projections or grooves in concentric circles or stripes, or a large number of discs. The protrusion may be provided. The size, shape, material and the like of the base plate 31, the pressure receiving plate 32, the ring 33 and the like can be variously changed according to the gist of the present invention.

[0024]

[Effect of device]

 According to the present invention, the structure of the vibration prevention device can be simplified and the cost can be reduced.

According to the invention of claim 2, the base plate is prevented from expanding in the horizontal direction, and the height dimension of the main body is stabilized for a long period of time.

[Submission date] April 4, 1994

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

According to a second aspect of the present invention, a ring for preventing expansion of the base plate in the horizontal direction is integrally embedded in the peripheral surface of the base plate.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

The ring 33 is used to prevent the base plate 31 from expanding in the horizontal direction when a load is applied to the base plate 31. For example, a square pipe made of steel or the like is used with an appropriate width dimension. A sliced product or a hard synthetic resin such as glass fiber-filled nylon is used, and is embedded and integrally formed when the base plate 31 is formed. The outer surface of the ring 33 may be exposed on the outer surface, or may be embedded in the inner portion of the base plate 31.

[Brief description of drawings]

FIG. 1 is a sectional front view of a main body of an anti-vibration device according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional plan view of the main body of the vibration prevention device.

FIG. 3 is a front view showing a usage state of the vibration prevention device.

FIG. 4 is a sectional front view of a main body of a second embodiment according to the present invention.

[Explanation of symbols]

 1 Vibration prevention device 11, 11a Main body 21 Bracket 22 Adjustment bolt 31, 31a Base plate 32 Pressure receiving plate 33 Ring 41 Pressure receiving plate recess 51 Bolt receiving recess MF Machine body FL Floor surface

[Procedure amendment]

[Submission date] April 4, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

Claims (2)

[Scope of utility model registration request] 1. A device for preventing vibration of the machine body by installing it between the machine body and the floor surface when installing the machine body on a floor surface. An adjusting bolt that is screwed into a bracket attached to a position and is capable of adjusting the height in the vertical direction; Vibration prevention of the machine body, characterized by comprising: apparatus. 2. A body ring according to claim 1, wherein a metal ring for preventing horizontal expansion of said base plate is integrally embedded in a peripheral surface of said base plate. Anti-vibration device.