JPH062047Y2 - Installation stand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an installation stand used when installing various machines accompanied by vibration on a floor surface.

[Prior Art] When installing a machine that vibrates like a press machine on a floor surface, make sure that the legs of the press machine and the floor surface are not separated from each other so as not to adversely affect the precision machinery installed near the machine. An installation stand is interposed between them to absorb the vibration generated by the press machine.

8 and 9 are a vertical sectional view and a bottom view of a conventional installation table of this type.

This installation base is a frame 1 attached to a lower portion of a leg A of a machine such as a press device to support the machine, and eight vibration absorbing members attached to a lower side of the frame 1 and placed on a floor surface. 2 and 2 are the main components. Frame 1
Is a frame body 3 that is in close contact with the upper surface of the vibration absorbing member 2, a jack 4 that is vertically movable and non-rotatably housed in a recess 3a provided in the upper center of the frame body 3, and the center of the recess 3a. And the receiving member 5 arranged in the. The mechanical leg A is placed on the jack 4.
On the other hand, the vibration absorbing member 2 is made of rubber or the like and is attachable to and detachable from the frame body 3. That is, the locking projections 2a provided on the upper part of the vibration absorbing member 2 can be attached by being fitted into the plurality of locking holes 3b provided outside the recess 3a in the frame main body 3, and the vibration absorbing member 2 to be mounted can be attached. The quantity can be changed as required.

A connecting bolt 6 penetrating the machine leg portion A is screwed into a screw hole 4a formed in the center of the jack 4 of the frame 1 and penetrating in the vertical direction. The connecting bolt 6 is formed at the tip of the connecting bolt 6. The convex spherical portion 6a is tiltably mounted on the concave spherical spherical surface seat 5a formed on the receiving member 5. Therefore, when the connecting bolt 6 is rotated while the lock nut 7 is loosened, the jack 4 is rotated depending on the rotating direction.
Moves up or down in the recess 3a of the frame body 3,
The mechanical leg A can be moved up and down with respect to the floor surface.

Normally, a plurality of installation bases are provided at the bottom of the machine, and the height adjustment is performed for each installation base as described above, and when the levelness of the machine reaches a predetermined accuracy, the lock nut 7 of each installation base is installed. Tighten to firmly fix the machine leg A and the jack 4 to complete the installation.

The convex spherical portion 6a of the jack 4 is received by the spherical seat 5a of the receiving member 5, so that even if the machine leg A and the floor surface are not parallel but inclined, the machine can be stably leveled. It can be installed.

By the way, the reason why the vibration absorbing member 2 is detachably attached to the frame body 3 in the installation table is as follows.

One of the reasons is that the weight of the machine to be installed, the frequency of vibrations transmitted from the machine to the installation table, etc. differ depending on the machine to be installed. When this is covered by the above-mentioned installation base of the same model and the same specifications, there is an optimum quantity of the vibration absorbing member 2 for the machine to be installed. That is, there is an optimum load applied to each vibration absorbing member 2. For example, if a machine with a small weight is installed on the floor using a mounting table in which the above eight vibration absorbing members 2 are fixed to the frame body 3 in a non-separable manner, the load per vibration absorbing member 2 decreases. The phenomenon that the installation base walks on the floor together with the machine due to the vibration of the machine occurs. Therefore, in order to widen the machine weight that can be accommodated in the same model and the installation stand of the same specifications and to exert a sufficient vibration absorbing function, the vibration absorbing member 2 can be attached to and detached from the frame body 3, The quantity can be changed.

Another reason is that under the condition that the material of the vibration absorbing member 2 is substantially the same, the height dimension of the vibration absorbing member 2 is almost the same, and the total volume of the vibration absorbing member 2 is almost the same, When the weight of the machine mounted on the machine is almost the same and the frequencies transmitted from the machine to the installation table are substantially the same, generally, the larger the total surface area of the vibration absorbing member 2, the better the vibration absorbing performance. ing. Therefore, a large number of small vibration-absorbing members 2 arranged on the frame body 3 as in the above-mentioned installation table has better vibration-absorbing performance of the installation table than a small number of large vibration-absorbing members.

[Problems to be Solved by the Invention] However, reducing the volume of each vibration absorbing member and increasing the number thereof unnecessarily complicates the assembly work of the installation base. Therefore, a reasonable volume and a reasonable quantity for the vibration absorbing member 2 have been empirically determined. Therefore,
It has been earnestly desired to increase the surface area of the vibration absorbing member from a viewpoint other than the size of the vibration absorbing member and the number of the vibration absorbing members.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and an object thereof is to freely select the number of vibration absorbing members to be mounted on the frame and the mounting case thereof, and to use a single machine in a wide range of weights. In response to the above, there is a need to provide an installation stand that appropriately exhibits sufficient vibration absorption performance.

[Means for Solving the Problems] This invention has been made in order to achieve the above object.
The gist of the present invention is to provide an installation table composed of a frame attached to a lower portion of a machine leg portion for supporting a machine, and a vibration absorbing member having an upper portion supported by the frame and a bottom portion placed on a floor surface. Is provided with a plurality of accommodation recesses for accommodating the vibration absorbing member from the central portion to the peripheral portion of the bottom surface portion, the vibration absorbing member is provided with a through hole from the upper portion to the bottom portion, and the accommodation recess has a front portion. A support pin protruding vertically downward from the top of the accommodating recess is attached, and the tip of the support pin is inserted into and removed from the through hole of the vibration absorbing member, and the tip of the support pin fits into the through hole. The vibration absorbing member is held in the accommodating concave portion by being installed.

[Operation] Since the vibration absorbing member is provided with the through hole, the vibration absorbing member is detachably attached to the accommodating concave portion via the support pin fitted into the through hole. The mounting place can be arbitrarily selected.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings from FIG. 1 to FIG.

The main constituent elements of this installation base are, as in the conventional case, a frame 11 that is attached to the lower portion of the leg A of a machine such as a press device to support the machine, and a frame 11 that is attached to the lower side of the frame 11 and placed on the floor. The vibration absorbing members 12, 12, ...
Each vibration absorbing member 12 is detachable from the frame 11.

Further, the frame 11 also has a frame body 13 that is in close contact with the upper surface of the vibration absorbing member 12 and a frame body 13 as in the conventional case.
A jack 14 that is arranged on the upper part of the jack and is vertically movable and non-rotatable with respect to the frame body 13, and a connecting bolt 16 that connects the jack 14 and the machine leg A placed on the jack 14 is mounted. The receiving member 15 is placed.

The frame main body 13 is formed in a substantially square shape in a plan view, and 16 open rectangular box-shaped housing recesses 13a for housing the vibration absorbing member 12 are provided on the bottom side thereof.
The accommodating recesses 13a are regularly arranged in a grid pattern. That is, the four accommodation recesses 13 a on the inner side are disposed so as to surround the four accommodation recesses 13 a on the inner side arranged in the central portion of the frame body 13, and the accommodation recesses 13 a on the outer side are disposed in the peripheral portion of the frame body 13. Then, in the bottom portion of the frame body 13, the peripheral edge portion and the accommodating recess portions 13 that are adjacent to each other.
A reinforcing rib 13g having a lattice shape is formed between a and a. Each accommodation recess 13
A mounting hole 13b penetrating to the upper side is provided in the center of a, and a support pin 18 is inserted from the upper side of the frame body 13 into each mounting hole 13b.
8a is locked to the counterbore provided on the upper surface of the frame body 13. Locking projections 18c are formed on the shaft portion 18b of the support pin 18 at regular intervals in the axial direction, and the circumferential surface of each locking projection 18c is a tapered surface whose diameter gradually decreases downward. . Shaft 18 of each support pin 18
The tip of b projects downward from the mounting hole 13b and supports the vibration absorbing member 12 housed in each housing recess 13a.

The vibration absorbing member 12 is formed of an elastic material such as rubber. As shown in the plan view of the vibration absorbing member 12 of FIG. 4 and the longitudinal sectional view of FIG. The surface shape is a trapezoid with the shorter side being the lower side. Vibration absorbing member 1
The flat upper surface of 2 has a bifurcated groove 12 having a substantially half-moon cross section.
a and 12b are formed.

Further, at the center of the vibration absorbing member 12, there is provided a through hole 12c with its axis oriented in the vertical direction (vertical direction). The upper portion of the through hole 12c has an engaging protrusion 18c for the support pin 18.
Is a small diameter portion 12d having an inner diameter smaller than the maximum outer diameter by a predetermined size, and the lower portion of the through hole 12c is a large diameter portion 12e having an inner diameter larger than the small diameter portion 12d. By inserting the tip of the shaft portion 18b of the support pin 18 into the small diameter portion 12d of the vibration absorbing member 12, the vibration absorbing member 12 can be mounted on the frame body 13. The outer diameter of the locking projection 18c and the small diameter portion 12d
Since the dimensional relationship with the inner diameter of the shaft 18b is as described above, when the shaft portion 18b is inserted into the small diameter portion 12d, the vibration absorbing member 12
Install by pushing against the elasticity of. The locking protrusion 18c of the shaft portion 18b functions to prevent the vibration absorbing member 12 from falling off.

On the other hand, on the upper side of the frame body 13, the rising portions 13 each having a substantially square V shape in plan view are formed so as to surround the outer sides of the respective mounting holes 13b provided in the four accommodation recesses 13a.
c is provided, and the rising portion 13c has four reinforcing ribs 13f on the outer side thereof. Rising part 13
The inside of c is a rectangular recess 13d for accommodating the jack 14 in a vertically movable manner. Further, an annular protrusion 13e for accommodating the receiving member 15 therein projects upward in the center of the rectangular recess 13d. Four ribs 13h are provided between the rising portion 13c and the annular protrusion 13e.

The jack 14 housed in the rectangular recess 13d of the frame body 13 has a rectangular shape in plan view slightly smaller than the rectangular recess 13d, and has a support portion 14a having a flat upper surface on which the machine leg A is placed. , A guide portion 14b extending downward from the lower four corners of the support portion 14a.
This guide portion 14b is a rectangular recess 13d of the frame body 13.
Since the jack 14 is engaged with the frame main body 13
It becomes impossible to rotate with respect to. The ribs 13h are arranged so as to be sandwiched between the adjacent guide portions 14b, 14b. A screw hole 14c into which the connecting bolt 16 is screwed is provided in the center of the support portion 14a with its axis lined in the vertical direction, and the tip convex spherical portion 16a of the connecting bolt 16 protruding downward from the screw hole 14c is an annular shape. It is tiltably mounted on the concave spherical spherical seat 15a of the receiving member 15 installed in the protrusion 13e.

In the installation table configured as described above, the number of vibration absorbing members 12 and their mounting positions are appropriately selected in advance according to the weight of the machine to be installed, and the vibration absorbing members 12 are mounted on the frame body 13. For example, when the weight of the machine is very heavy, the vibration absorbing members 12 are arranged in all the accommodating recesses 13a of the frame body 13 as shown in FIG. 3, and a total of 16 vibration absorbing members 12 are mounted. To do. In this case, unlike the above-mentioned conventional installation table, the four vibration absorbing members 12 are also arranged in the central portion of the frame main body 13, which is very advantageous in supporting the function. or,
When installing a machine with a smaller weight than this,
As shown in the figure, only 1 is added to the periphery of the frame body 13.
When installing two vibration absorbing members 12 or installing a machine lighter than this, as shown in FIG. 7, install a total of four vibration absorbing members 12 only at the four corners of the frame body 13, etc. The number and mounting position of the vibration absorbing members 12 are predetermined so as to obtain the best stability and the best vibration absorbing function when supporting the machine. 6 and 7 show the positional relationship of the vibration absorbing member 12 with respect to the frame body 13, and details of the accommodating recess 13a, the reinforcing rib 13g, etc. are omitted. The number and mounting position of the vibration absorbing members 12 listed here are merely examples, and the present invention is not limited thereto, and various combinations of various numbers and mounting positions can be adopted. For example, although not shown,
There may be a case where only the four inner vibration absorbing members 12 are attached to the central portion of the frame body 13.

Further, since the vibration absorbing member 12 in this installation table is provided with the through hole 12c consisting of the small diameter portion 12d and the large diameter portion 12e in the center thereof, as compared with the conventional vibration absorbing member having the same nominal size as this, The surface area of the vibration absorbing member 12 according to the invention is significantly larger. Therefore, comparing the installation base according to the present invention with the conventional installation base in the case where the same number of vibration absorbing members having the same nominal size are used to support a machine having the same weight, the installation base according to the present invention is more The vibration absorption performance is extremely good.

The small diameter portion 12d in the through hole 12c of the vibration absorbing member 12 also serves as a mounting hole into which the shaft portion 18b of the support pin 18 is fitted, so that there is no waste.

Further, the height of the vibration absorbing member and the through hole 12c are provided on the installation table.
The small-diameter portion 12d has the same inner diameter, and is provided with various vibration-absorbing members 12 having different sizes and different materials in other portions. By properly using the vibration-absorbing members 12, a vibration-absorbing function sufficient for a machine to be installed is provided. Is being demonstrated.

Even in this installation table, the connecting bolt 16 is rotated to move the jack 14 up and down with respect to the frame 11, and thereby the machine leg A is moved up and down with respect to the floor surface to bring the machine horizontal. The place where the mechanical leg A is fixed to the jack 14 by tightening the lock nut 17 is the same as the conventional installation table.

This invention is not limited to the above-mentioned embodiment, and various modes can be adopted.

For example, the support pins may be permanently fixed to the frame.

Further, in this embodiment, the inner vibration absorbing member is arranged in the central portion of the frame and the outer vibration absorbing member is arranged in the peripheral portion of the frame so as to form a double layer. Alternatively, the vibration absorbing members may be arranged in an arc shape.

[Effect of the Invention] As described above, the present invention has the following excellent effects.

By providing the vibration absorbing member with a through hole, the surface area can be increased as compared with the conventional vibration absorbing member having the same nominal size, and as a result, the vibration absorbing performance is greatly improved and the support fitted into the through hole is provided. Since the vibration absorbing member is detachably attached to the accommodating recess via the pin, the number of vibration absorbing members to be attached to the bottom surface of the frame and the mounting place can be arbitrarily selected, so that a wide range of individual It is possible to properly exhibit a sufficient vibration absorbing function in accordance with the weight of the machine, and normally install the machine without walking.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view of an installation table.
Fig. I-I sectional view, Fig. 2 is the same plan view, Fig. 3 is the same bottom view,
FIG. 4 is a plan view of the vibration absorbing member, and FIG. 5 is a VV sectional view of FIG. 6 and 7 are bottom views showing the mounting positions of the vibration absorbing member on the frame. FIG. 8 is a vertical sectional view of a conventional installation table, and FIG. 9 is a bottom view of the same. A ... Machine, 11 ... Frame, 12 ... Vibration absorbing member, 12c ... Through hole, 18 ... Support pin.

Claims (1)

[Scope of utility model registration request] 1. An installation table comprising a frame attached to a lower portion of a machine leg portion to support a machine, and a vibration absorbing member having an upper portion supported by the frame and a bottom portion placed on a floor surface. A plurality of accommodating recesses for accommodating the vibration absorbing member are arranged from the central portion to the peripheral portion of the bottom surface portion.The vibration absorbing member is provided with a through hole from the upper portion to the bottom portion, and the accommodating recess portion has a front portion. A support pin that vertically protrudes from the top of the accommodating recess is attached, and the tip of the support pin is insertable into and removable from the through hole of the vibration absorbing member. An installation stand characterized in that the vibration absorbing member is held in the accommodation recess by being fitted.