JP6853533B2 - Anti-vibration stand and its fixed structure - Google Patents

Description

The present invention relates to an anti-vibration pedestal and its fixing structure, and in particular, is disposed together with an anti-vibration mount between an upper pedestal on which a predetermined device is mounted and a lower pedestal supporting the upper pedestal. It relates to an improved stopper mechanism in a vibration-proof pedestal provided with a stopper mechanism to prevent excessive displacement between the two pedestals, and a fixed structure of such a vibration-proof pedestal.

Conventionally, between the upper pedestal on which vibration-proof equipment such as a transformer or an outdoor unit of an air conditioner is mounted, and the lower pedestal that is arranged below the upper pedestal and supports it. Various anti-vibration mounts have been proposed in which vibration-proof mounts are arranged so that vibration transmission between the two mounts can be suppressed or prevented (for example, JP-A-2005-220936, JP-A-2007-22604). (Refer to the official gazette, etc.), and has been put into practical use.

Then, in such a vibration-proof pedestal, a stopper mechanism for preventing excessive displacement between the upper pedestal and the lower pedestal is arranged in a form arranged side by side with the vibration-proof mount. The structure thereof is clarified in JP-A-2012-26542, JP-A-2016-48077, etc., and is also disclosed in JP-A-2012-266542. The structure of the anti-vibration gantry that can solve the problems inherent in the anti-vibration gantry has been proposed, but even in such an anti-vibration gantry, various problems are inherent.

For example, in the anti-vibration pedestal disclosed in Japanese Patent Application Laid-Open No. 2014-666272, an anti-sway device as a stopper mechanism is installed in parallel with an isolator which is an anti-vibration mount, in which vibration of the isolator is installed. The structure is such that there is a certain clearance between the upper gantry and the cushioning rubber so as not to interfere with the insulation, and it is fixed to the lower gantry. When a sway occurs, it comes into contact with the upper gantry and functions to regulate the sway width. The horizontal swing width, which is the direction orthogonal to the axis of the bolt connecting the upper pedestal and the lower pedestal, is the cushioning rubber or aluminum attached between the inner circumference of the bolt through hole and the outer circumference of the bolt leg. It is determined by the installation space of metal fittings and the clearance of each, and is adjusted by the position of the bolts fixed to the lower gantry. In addition, the vertical swing width, which is the axial direction of the bolt, is determined by the installation space for the upper mount, cushioning rubber, aluminum metal fittings, etc. that are attached between the nut and the anti-sway cushion washer, and the clearance between them. It is adjusted by the position of the nut and the anti-sway buffer washer installed in.

However, in the proposed anti-vibration gantry structure, when adjusting the horizontal position of the bolt and fixing the bolt to the lower gantry, it is necessary to tighten the nut with the head of the bolt fixed with a tool. Therefore, there is a problem that there is a high risk of bolt misalignment and workability is poor. In addition, when adjusting and fixing the position of the nut on the upper gantry side and the anti-sway buffer washer, either the nut or the anti-sway washer must be fixed with a tool and the other must be tightened. There are also inherent problems such as high risk and poor workability.

In addition, in the case of the conventional anti-vibration pedestal, in general, when the equipment to be vibration-proof is mounted on the upper pedestal and transported, the cushioning rubber of the anti-sway device is caused by the long-term shaking or collision of the upper pedestal. In order to cause damage to the equipment and incidental parts such as cables and tubes connected to the outside from the equipment subject to vibration isolation, the equipment subject to vibration isolation mounted on the anti-vibration stand for inspection and confirmation is used. Once lowered, transported, and transported to the installation location, the anti-vibration target device is mounted on the anti-vibration stand again, and the anti-vibration stand is readjusted and the incidental parts of the anti-vibration target device are re-installed. Therefore, it takes a lot of time and effort to transport and install the anti-vibration equipment.

Japanese Unexamined Patent Publication No. 2005-220936 Japanese Unexamined Patent Publication No. 2007-22604 Japanese Unexamined Patent Publication No. 2012-26542 Japanese Unexamined Patent Publication No. 2016-48077 Japanese Unexamined Patent Publication No. 2014-66272

Here, the present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved thereof is to provide an improved structure of the stopper mechanism in the vibration isolation frame and a fixed structure thereof. Further, it is intended to provide a stopper mechanism capable of accurately and easily setting a predetermined clearance that allows displacement between the upper pedestal and the lower pedestal, and further, a vibration isolation target. The purpose is to provide a structure that enables transportation and installation with the device mounted.

The present invention can be preferably carried out in various aspects as listed below in order to solve the above-mentioned problems or the problems grasped from the description of the entire specification and the drawings. Moreover, each aspect described below can be adopted in any combination. It should be noted that the aspects or technical features of the present invention are not limited to those described below, and can be recognized based on the invention idea disclosed in the entire description and drawings. , Should be understood.

(1) The upper pedestal on which the anti-vibration target device is mounted, the lower pedestal arranged below the upper pedestal, and the vibration between the upper pedestal and the lower pedestal. In a form in which a vibration-proof mount that suppresses or blocks transmission and a vibration-proof mount that is juxtaposed with the vibration-proof mount, it is arranged between the opposite horizontal portions of the upper pedestal and the lower pedestal, and between the two gantry In a vibration-proof pedestal provided with a stopper mechanism for preventing excessive displacement, the stopper mechanism has a large-diameter portion on the head side and a small-diameter portion on the tip end side of the leg. The mounting bolt has a stepped structure in which a screw is formed on the outer peripheral surface of the small diameter portion, and the large diameter portion of the leg portion of the mounting bolt is provided in the horizontal portion of the upper pedestal. The upper nut is inserted so that the head of the mounting bolt is located above the horizontal portion of the upper pedestal and is movable in the horizontal direction, and is screwed into the small diameter portion of the leg portion of the mounting bolt. The mounting bolt is mounted so as to form a predetermined clearance with respect to the horizontal portion of the upper pedestal by abutting the step portion between the large diameter portion and the small diameter portion of the mounting bolt by tightening. By fixing the mounting bolt to the horizontal portion of the lower pedestal at the small diameter portion of the leg portion, the upper pedestal and the lower pedestal are connected by the mounting bolt. A characteristic anti-vibration stand.

(2) An upper washer and an upper anti-vibration member are placed between the head of the mounting bolt and the horizontal portion of the upper gantry so that the upper anti-vibration member is located on the horizontal portion side of the upper gantry. On the other hand, the lower anti-vibration member and the lower washer are placed between the horizontal portion of the upper pedestal and the upper nut screwed into the small diameter portion of the mounting bolt, and the lower anti-vibration member is the upper side. The clearance is formed between the horizontal portion of the upper pedestal and the lower anti-vibration member by tightening the upper nut so as to be located on the horizontal portion side of the gantry. The anti-vibration pedestal according to the above aspect (1).

(3) The upper anti-vibration member is composed of a plate-shaped anti-vibration body and a saucer member accommodating a lower portion of the anti-vibration body, and the saucer member is placed on a horizontal portion of the upper pedestal. The anti-vibration pedestal according to the above aspect (2), which is attached in the form of

(4) The mounting bolt is movably inserted into a mounting hole provided in the horizontal portion of the lower pedestal in the small diameter portion of the leg portion so as to be movable in the horizontal direction, and the horizontal portion of the lower pedestal portion of the leg portion. A washer with a nut is screwed into the nut portion of the portion protruding downward from the nut, and a through hole provided in the horizontal portion of the lower gantry with respect to the washer portion of the washer with a nut. The washer with a nut is fixed to the horizontal portion of the lower gantry by screwing the fixing bolt inserted so as to be movable in the horizontal direction, while being screwed to the small diameter portion of the leg portion of the mounting bolt. By tightening the lower nut, the mounting bolt is fixed to the horizontal portion of the lower pedestal by sandwiching the horizontal portion of the lower pedestal between the lower nut and the washer with the nut. The anti-vibration pedestal according to any one of the above-described aspects (1) to (3).

(5) In the anti-vibration pedestal according to any one of the above-described aspects (1) to (4), a plate-shaped fixing plate is inserted between the horizontal portion of the upper pedestal and the upper nut. The anti-vibration pedestal is characterized in that the horizontal portion of the upper pedestal and the horizontal portion of the lower pedestal are fixedly connected by the mounting bolts by eliminating the clearance. Fixed structure.

(6) A lower anti-vibration member and a lower washer are interposed between the horizontal portion of the upper gantry and the upper nut so that the lower anti-vibration member is located on the horizontal portion side of the upper gantry. The anti-vibration pedestal fixing structure according to the above aspect (5), wherein the fixing plate is interposed between the lower washer and the upper nut.

(7) In a form in which the fixing plate has a U-shaped planar shape and the legs of the mounting bolt are inserted into a gap between two opposite free ends of the U-shape. The anti-vibration pedestal fixing structure according to the above aspect (5) or the above aspect (6), wherein such a fixing plate is inserted.

(8) The fixing plate has a retaining means disposed at the tip end side portions of two U-shaped free ends, and the fixing plate is attached to the upper pedestal by the retaining means. The fixing structure of the anti-vibration pedestal according to the aspect (7), wherein the vibration-proof pedestal is prevented from coming out from between the horizontal portion and the upper nut.

As described above, in the anti-vibration pedestal according to the present invention, a mounting bolt having a stepped structure is used for connecting the upper pedestal and the lower pedestal, and the mounting bolt has a large diameter portion on the upper head side. In a form in which the leg portion is inserted into a mounting hole provided in the horizontal portion of the upper pedestal, and the leg portion is fixed to the horizontal portion of the lower pedestal at a portion on the end (lower end) side of the small diameter portion of the leg portion. Tighten the upper nut screwed into the small diameter part of the leg of the mounting bolt, and then tighten the step portion between the large diameter part and the small diameter part of the leg of the mounting bolt, in other words, the large diameter part of the leg. By bringing it into contact with the lower end portion, the positioning of the upper nut can be reliably performed, so that the mounting bolt can be easily attached to the horizontal portion of the upper pedestal and the vibration isolation target. Clearance for operating the anti-vibration mount to suppress or prevent vibration transmission between the upper gantry and the lower gantry while the device is mounted is easy and easy on both sides of the horizontal part of the upper gantry. Therefore, problems such as the risk of bolt misalignment and workability inherent in the conventional anti-vibration pedestal can be solved.

Further, according to the anti-vibration pedestal fixing structure according to the present invention, a plate-shaped fixing plate is inserted between the horizontal portion of the upper pedestal on which the anti-vibration target device is mounted and the upper nut, and the upper nut is tightened. By doing so, the clearances formed on both sides of the horizontal portion of the upper pedestal are easily extinguished, and in that state, the horizontal portion of the upper pedestal and the horizontal portion of the lower pedestal are formed. Since the device is fixedly connected with the mounting bolts, even if the anti-vibration target device is mounted on the upper gantry, the load does not immediately act on the anti-vibration mount. It is possible to transport the equipment subject to vibration isolation with such equipment installed, and for this reason, it is easy to transport and install the equipment subject to vibration isolation, and the trouble of readjusting the anti-vibration mount is also advantageously eliminated. Therefore, it is possible to advantageously reduce or shorten the installation cost and the installation construction period.

It is explanatory drawing which shows an example of the anti-vibration pedestal according to this invention, (a) is the plane form explanatory drawing, (b) is the front explanatory drawing. FIG. 1 is an enlarged explanatory view of the right side surface of the anti-vibration gantry shown in FIG. 1, showing a state in which the anti-vibration target device is mounted on the upper gantry. It is a perspective explanatory view of the anti-vibration pedestal shown in FIG. It is an enlarged explanatory view which shows the connection form of the upper pedestal and the lower pedestal by the stopper mechanism on the right side in FIG. 1 (b). It is a vertical cross-sectional explanatory view of FIG. 4, and is the figure corresponding to the AA cross section in FIG. 1A. It is explanatory drawing which shows by disassembling each member in the cross-sectional form shown in FIG. It is explanatory drawing which shows the mounting bolt used in FIG. 4, (a) is the plane form explanatory view, (b) is the front form explanatory view, (c) is the bottom surface. It is a form explanatory drawing. It is explanatory drawing which shows the upper vibration isolation member used in FIG. 4, (a) is the plane form explanatory drawing, (b) is the bottom surface form explanatory view, (c) is It is a cross-sectional explanatory view of BB in (a). It is explanatory drawing of the washer with a nut used in FIG. 4, (a) is the plan view explanatory view, (b) is the bottom surface form explanatory view, (c) is (a It is a cross-sectional explanatory view of CC in). It is explanatory drawing which shows the form in which the fixing plate is inserted into a stopper mechanism, and the clearance is extinguished, (a) is the explanatory view corresponding to FIG. 4, (b) is the side surface description of (a). It is a figure. It is a vertical cross-sectional explanatory view in FIG. 10A, and is the cross-sectional explanatory view corresponding to FIG. An explanatory view of the fixed plate used in FIG. 10, (a) is a plan view explanatory view thereof, (b) is a front view explanatory view thereof, and (c) is a perspective explanatory view thereof. is there. It is explanatory drawing corresponding to FIG. 10B which shows the insertion direction of the fixing plate with respect to a stopper mechanism.

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

First, in FIGS. 1 to 3 showing an example of the anti-vibration pedestal according to the present invention, 2 is an upper pedestal exhibiting a rectangular planar shape, and 4 is arranged below the upper pedestal 2 at a predetermined distance. Further, it is also a rectangular lower pedestal, and both of these pedestals are configured in the same plate-like structure or frame structure as in the conventional case. Further, between the upper pedestal 2 and the lower pedestal 4, vibration-proof mounts 6 that suppress or prevent vibration transmission between the two pedestals are arranged at four corners of a rectangular shape, respectively. At the same time, in a form in which the anti-vibration mounts 6 are arranged side by side, a stopper mechanism 8 for preventing excessive displacement between the upper pedestal 2 and the lower pedestal 4 is provided between the opposing horizontal portions. , Each is arranged. Then, as shown in FIG. 2, a vibration isolation target device 10 such as a vibration generating device such as a transformer is mounted on the upper gantry 2.

Specifically, the upper pedestal 2 and the lower pedestal 4 are fixed to the main body portions 2a and 4a and a set of side portions facing each other in the longitudinal direction of the rectangular shape, respectively, and have a U-shape that opens upward. It is composed of mold mounting brackets 2b and 2b and U-shaped mounting brackets 4b and 4b that open downward, and U-shaped mounting brackets arranged on both sides of the upper pedestal 2 and the lower pedestal 4. 2b, 2b; 4 of the stopper mechanisms 8 are arranged at the ends of the rectangular shape in the direction perpendicular to the longitudinal direction so as to connect the opposite horizontal portions 2h and 4h of 4b and 4b. .. Further, one of the long L-shaped mounting brackets 4c and a short length are placed on the other pair of opposite side portions of the main body portion 4a in which the U-shaped mounting bracket 4b of the lower gantry 4 is not arranged. Two L-shaped mounting brackets 4d are fixed to each other, and the lower pedestal 4 is mounted via these L-shaped mounting brackets 4c; 4d and 4d and fixed to the supported base. Can be done.

The vibration-proof mount 6 used here is for preventing the vibration generated in the vibration-proof target device 10 from being transmitted to the outside, or to prevent the vibration from being transmitted to the vibration-proof target device 10 from the outside. A vibration-proof mount having a conventionally known structure having a function of suppressing or blocking vibration transmission between the upper pedestal 2 and the lower pedestal 4, for example, a coil spring or viscoelasticity in a resin case. A structure having a built-in body or the like is adopted, and the structure is fixed on the lower gantry 4.

Further, as is clear from the enlarged view shown in FIG. 4, the vertical sectional view shown in FIG. 5, and the exploded view shown in FIG. 6, the stopper mechanism 8 is a mounting bolt 12 which is one of its constituent members. Are arranged so as to penetrate the horizontal portion 2h of the upper mounting bracket 2b of the upper pedestal 2 and the horizontal portion 4h of the lower mounting bracket 4b of the lower pedestal 4, and the upper pedestal 2 and the lower pedestal are arranged. 4 can be connected.

That is, there, as shown in FIG. 7, the mounting bolt 12 has a hexagonal head portion 12a and a leg portion 12b having a predetermined length, and the leg portion 12b is a head portion. The predetermined length portion on the 12a side is a large diameter portion 12bl without threads, while the portion on the tip side of the leg portion 12b is a small diameter portion 12bs, and threads are formed on the outer peripheral surface of the small diameter portion 12bs. It has a stepped structure. Therefore, a step portion is formed between the large diameter portion 12bl without threads and the small diameter portion 12bs with threads. The axial length of the large-diameter portion 12bl without threads is such a predetermined clearance 18 (18a + 18b) so as to form a predetermined clearance 18 (18a + 18b) with respect to the horizontal portion 2h of the upper mounting bracket 2b. The thicknesses of the spring washer 24, the upper washer 22, the upper anti-vibration member 20, the horizontal portion 2h of the upper mounting bracket 2b, the lower anti-vibration member 26, the lower washer 28, and the spring washer 32, which will be described later, are added to (18a + 18b). It will be set so that it will be the size added to each.

Then, here, as is clear from FIGS. 4 and 5, such a mounting bolt 12 is provided on the horizontal portion 2h of the upper mounting bracket 2b of the upper pedestal 2 in the large diameter portion 12bl of the leg portion 12b. The head portion 12a of the mounting bolt 12 is inserted into the mounting hole 14 having a diameter sufficiently larger than the diameter portion 12bl so as to be located above the horizontal portion 2h of the upper mounting bracket 2b, and moves in the horizontal direction. By tightening the upper nut 30 screwed into the small diameter portion 12bs of the leg portion 12b of the mounting bolt 12, the upper nut 30 becomes a step portion of the leg portion 12b of the mounting bolt 12. The mounting bolt 12 is attached to the horizontal portion 2h of the upper mounting bracket 2b of the upper pedestal 2 while forming a predetermined clearance 18 (18a + 18b) by abutting against the above and preventing its ascent. It has become.

Specifically, here, between the head portion 12a of the mounting bolt 12 and the horizontal portion 2h of the upper mounting bracket 2b of the upper pedestal 2, an upper vibration isolator 20 and an upper washer 22 exhibiting a circular planar shape, respectively. However, the upper anti-vibration member 20 is placed on top of each other so as to be located on the horizontal portion 2h side of the upper mounting bracket 2b of the upper gantry 2, and the spring washer 24 in the form of a disc spring is further placed on it. It is intervened in the form shown. As is clear from FIG. 8, the upper anti-vibration member 20 is an anti-vibration body 20a made of an elastic material such as rubber or urethane and having a predetermined width and a thick ring plate shape, and the anti-vibration body 20a. It is composed of a metal saucer member 20b that accommodates the lower portion. Then, the saucer member 20b is formed with a hanging portion 20c that hangs down from the peripheral edge of the hole formed in the central portion of the bottom portion by a predetermined length, and in this hanging portion 20c, as shown in FIG. The upper anti-vibration member 20 is attached in a form in which the upper anti-vibration member 20 is fitted into the attachment hole 14 formed in the horizontal portion 2h of the upper attachment bracket 2b. Further, the upper washer 22 is made of a metal member having a large ring plate shape having substantially the same diameter as the vibration isolator 20a of the upper vibration isolator member 20, and is attached via the upper washer 22. It is elastically connected to the head portion 12a of the bolt 12.

Further, on the lower side of the horizontal portion 2h of the upper mounting bracket 2b of the upper gantry 2, a ring plate shape having a predetermined width made of an elastic material such as rubber or urethane is formed similarly to the vibration isolator 20a of the upper vibration isolator member 20. A lower anti-vibration member 26 and a large circular metal lower washer 28 having the same size as the lower anti-vibration member 26 and supporting the lower anti-vibration member 26 are arranged. The upper nut 30 screwed into the small diameter portion 12bs of the leg portion 12b of the mounting bolt 12 is tightened and moved upward, and the leg of the mounting bolt 12 is moved via a spring washer 32 in the form of a disc spring. The upper nut 30 is positioned by contacting the stepped portion of the large-diameter portion 12bl of the portion 12b, so that the lower anti-vibration member 26 is located between the horizontal portion 2h of the upper mounting bracket 2b and the upper nut 30. And the lower washer 28 is interposed, and a predetermined clearance 18 (18a + 18b) is formed with respect to the horizontal portion 2h.

That is, when the vibration isolation target device 10 is mounted on the upper gantry 2, clearances 18a and 18b are provided on both sides of the horizontal portion 2h of the upper mounting bracket 2b of the upper gantry 2 as shown in FIGS. 4 and 5. Although it will be formed, here, the horizontal portion 2h of the upper mounting bracket 2b and the lower anti-vibration member 26 are formed from the upper clearance 18a formed between the head portion 12a of the mounting bolt 12 and the spring washer 24. The lower clearance 18b formed between the and the lower clearance 18b is configured to have a larger gap.

On the other hand, the mounting bolt 12 is fixed to the horizontal portion 4h of the lower mounting bracket 4b of the lower pedestal 4 at the small diameter portion 12bs of the leg portion 12b, whereby the mounting bolt 12 and the upper pedestal 2 are fixed. The lower gantry 4 is connected to the lower gantry 4.

Specifically, here, the mounting bolt 12 is loosely inserted into the mounting hole 33 provided in the horizontal portion 4h of the lower mounting bracket 4b at the tip end side portion of the small diameter portion 12bs of the leg portion 12b, and is provided on the lower side. A circular washer 34 with a nut, which is arranged below the horizontal portion 4h of the mounting bracket 4b, and a circular washer 36, which is arranged above the horizontal portion 4h and has a size sufficiently larger than the mounting hole 33. It has come to be tightened and fixed between the lower nut 40 screwed into the small diameter portion 12bs of the leg portion 12b of the mounting bolt 12 which exerts a tightening force via the spring washer 38 in the form of a disc spring. There is. Depending on the fixed position of the leg portion 12b of the mounting bolt 12 with respect to the horizontal portion 4h of the lower mounting bracket 4b, the distance between the upper pedestal 2 and the lower pedestal 4 may be suppressed by the vibration isolation mount 6. Is set to a distance at which the blocking function can be effectively exerted.

In this case, as shown in FIG. 9, the washer 34 with a nut has a washer portion (metal fitting) 34a having a predetermined width of an annular plate shape or a donut shape and a small diameter portion 12bs of the leg portion 12b of the mounting bolt 12. The nut portion 34b screwed into the washer portion 34b has a structure in which the nut portion 34b is integrated by welding, press fitting, or the like, and the washer portion 34a is symmetrically provided with two tap holes 34c and 34c. There is. Then, in the horizontal portion 4h of the lower mounting bracket 4b, the two fixing bolts 44, 44 loosely inserted into the two through holes 42, 42 symmetrically provided so as to sandwich the mounting hole 33, respectively. It is screwed into the two tap holes 34c and 34c of the washer 34 with a nut, respectively, and is tightened and fixed via a spring washer 46 in the form of a disc spring that is sufficiently larger than the through hole 42.

Further, here, the mounting holes 33 and the through holes 42 provided in the horizontal portion 4h of the lower mounting bracket 4b are larger than the diameters of the small diameter portion 12bs of the leg portion 12b of the mounting bolt 12 and the leg portion of the mounting bolt 44. Since each of them has a large diameter of about several mm, the small diameter portion 12bs loosely inserted in the mounting hole 33 is inserted so as to be movable in the horizontal direction, and is also loosely inserted in the through hole 42. The legs of the inserted fixing bolt 44 are also inserted so as to be movable in the horizontal direction. Therefore, it is possible to loosen the two fixing bolts 44 and 44 to adjust the horizontal mounting position of the washer 34 with a nut, and adjust the horizontal mounting position of the washer 34 with a nut. After that, by tightening the fixing bolts 44 and 44, respectively, the horizontal position of the washer 34 with a nut can be accurately fixed. Further, by doing so, the lower nut 40 is tightened in a state where the mounting bolt 12 screwed in the small diameter portion 12bs is horizontally positioned on the nut portion 34b of the washer 34 with a nut. The mounting bolt 12 is fixed to the horizontal portion 4h of the lower mounting bracket 4b, and by extension, to the lower pedestal 4.

When the stopper mechanism 8 having the above-described configuration is installed between the upper pedestal 2 and the lower pedestal 4, generally, a predetermined anti-vibration target device 10 is mounted on the upper pedestal 2. First, the leg portion 12b of the mounting bolt 12 has a spring washer 24, an upper washer 22, an upper anti-vibration member 20, a mounting hole 14 of a horizontal portion 2h of the upper mounting bracket 2b, a lower anti-vibration member 26, a lower washer 28, and the like. The spring washers 32 are sequentially inserted, and the upper nut 30 and the lower nut 40 are screwed to the small diameter portion 12bs thereof, and further, the spring washer 38, the washer 36, and the horizontal portion 4h of the lower mounting bracket 4b. After the mounting holes 33 are sequentially inserted, the nut portion 34b of the washer 34 with a nut is screwed into the tip end side portion of the small diameter portion 12bs.

Then, in such a form, the horizontal position of the washer 34 with a nut is adjusted so that the mounting bolt 12 passes through the center of the mounting hole 14 provided in the horizontal portion 2h of the upper mounting bracket 2b. By screwing and tightening the fixing bolts 44 and 44, the mounting bolt 12 is fixed at the small diameter portion 12bs thereof, and further by tightening the lower nut 40, the mounting bolt 12 is moved to the small diameter portion of the leg portion 12b. At 12bs, the lower mounting bracket 4b is fixed to the horizontal portion 4h and thus to the lower pedestal 4.

After that, a spacer or the like having a corresponding thickness is interposed between the head portion 12a of the mounting bolt 12 and the spring washer 24 so that a predetermined gap (upper clearance 18a) is secured, in the vertical direction. After adjusting the mounting height, turn the upper nut 30 to tighten it so that it comes into contact with the step portion (lower end portion) of the large diameter portion 12bl of the leg portion 12b of the mounting bolt 12 via the spring washer 32. As a result, a predetermined gap (lower clearance 18b) is formed between the horizontal portion 2h of the upper mounting bracket 2b and the lower anti-vibration member 26, and the mounting bolt 12 can be used as the horizontal portion 2h of the upper mounting bracket 2b. Will be attached to. After that, by removing the spacer or the like interposed between the head portion 12a of the mounting bolt 12 and the spring washer 24, a target upper clearance 18a is formed between them.

As described above, in the stopper mechanism 8 having the above-described configuration, the stepped bolt 12 is fixed to the horizontal portion 4h of the lower mounting bracket 4b of the lower mount 4 at the end side portion of the leg portion 12b. In the squeezed form, the upper nut 30 is tightened so that the upper nut 30 is brought into contact with the step portion of the large diameter portion 12bl of the leg portion 12b via the spring washer 32, so that the tightening position of the upper nut 30 is accurate. It can be specified, and by doing so, problems such as the risk of misalignment inherent in the conventional anti-vibration pedestal and poor workability can be solved.

Moreover, in the stopper mechanism 8 of the example, since the structure in which the mounting bolt 12 is fixed to the lower pedestal 4 at the lower end portion of the leg portion 12b by using the washer 34 with a nut is adopted, the mounting bolt 12 is mounted. The horizontal position of the bolt 12 can be set in advance with the washer 34 with a nut, and the nut portion 34b of the washer 34 with a nut is fixed, so that the mounting bolt 12 is accurate. You can also enjoy the advantage that it can be easily fixed in position.

By the way, the anti-vibration gantry having the configuration as shown in the above example has a feature that it can be transported in a state where the anti-vibration target device 10 is mounted on the upper gantry 2. In such transportation, the upper nut 30 is formed on both sides of the horizontal portion 2h by inserting a predetermined fixing plate between the horizontal portion 2h of the upper gantry 2 and the upper nut 30 and tightening the upper nut 30. By eliminating the clearances 18a and 18b, respectively, the horizontal portion 2h of the upper pedestal 2 and the horizontal portion 4h of the lower pedestal 4 are fixedly connected by the mounting bolts 12 to be engaged. The structure is such that the anti-vibration pedestal is fixed, and in that state, the anti-vibration target device 10 is transported.

Specifically, as shown in FIGS. 10 and 11, a plate-shaped fixing plate 50 is placed between the lower washer 28 and the spring washer 32 on the lower side of the horizontal portion 2h of the upper gantry 2. In a form in which the clearances 18a and 18b existing on both sides of the horizontal portion 2h of the upper gantry 2 are eliminated by being inserted and tightened by the upper nut 30, the horizontal portion of the upper gantry 2 is used. 2h and the mounting bolt 12 are fixed, so that transportation is performed in a state where the stopper function of the stopper mechanism 8 is stopped.

As shown in FIG. 12, the fixing plate 50 is formed of a plate-like body having a U-shaped planar shape extending with a predetermined width, and forms a U-shaped opening thereof. The leg portion 12b (specifically, the large diameter portion 12bl) of the mounting bolt 12 can enter the gap between the two free end portions 50a and 50a, while the U-shaped base thereof , A projecting piece portion 50b extending with a predetermined width is integrally provided on the outside, and by gripping the projecting piece portion 50b, the fixing plate 50 can be easily inserted and removed. ing. The thickness of the fixing plate 50 is determined by the clearance 18a formed between the head portion 12a of the mounting bolt 12 and the spring washer 24, the horizontal portion 2h of the upper mounting bracket 2b, and the lower vibration isolator member 26. It is slightly larger than the total gap with the clearance 18b formed between them, and when the fixing plate 50 is inserted and set, it is suitable for the vibration isolator 20a and the lower vibration isolator 26 in the upper vibration isolator 20. Compression is added.

Further, the fixing plate 50 has hexagon socket head bolts 52 and 52 as retaining means screwed to the tip side portions of the two U-shaped free end portions 50a and 50a, respectively. Since the distance between the bolts 52 and 52 is narrower than the diameter of the lower washer 28 located above the fixing plate 52, the fixing plate 50 is inserted between the lower washer 28 and the spring washer 32. In the set state, the hexagon socket head bolts 52 and 52 come into contact with the outer peripheral portion of the lower washer 28 to prevent the hexagon socket head bolts from coming off.

Further, when inserting the fixing plate 50 into the stopper mechanism 8, as shown in FIG. 13, the upper nut 30 is loosened and moved downward to move the fixing plate 50 between the lower washer 28 and the spring washer 32. In a state where a sufficient gap can be formed, the fixing plate 50 is placed in the gap between the two free end portions 50a and 50a, and the leg portion 12b (specifically, the large diameter portion) of the mounting bolt 12 is placed. 12bl) is inserted from the side so that it can be inserted, and then the upper nut 30 is tightened again, and the upper nut 30 is inserted through the spring washer 32 into the step portion (lower end) of the large diameter portion 12bl of the leg portion 12b of the mounting bolt 12. It is made to come into contact with the part). As a result, the thickness of the fixing plate 50 is made larger than the total gap of the clearances 18a and 18b existing on both sides of the horizontal portion 2h of the upper gantry 2, so that the horizontal portion 2h of the upper gantry 2 is made larger. As is clear from FIG. 11, the upper anti-vibration member 20, the upper washer 22, the spring washer 24 and the lower anti-vibration member 26, the lower washer 28, the fixing plate 50, and the spring washer 32 are interposed on both sides thereof. In this mode, the mounting bolt 12 is sandwiched between the head portion 12a and the upper nut 30, so that the clearances 18a and 18b on both sides of the horizontal portion 2h are eliminated, and the upper pedestal 2 and the mounting bolt 12 are eliminated. It is fixed with.

Then, after transportation, the upper nut 30 is loosened so that a sufficient gap is formed between the upper nut 30 and the horizontal portion 2h of the upper gantry 2, and the nut 30 is inserted between the lower washer 28 and the spring washer 32. After removing the fixing plate 50, the upper nut 30 is tightened again so as to abut the lower end portion (step portion) of the large diameter portion 12bl of the leg portion 12b of the mounting bolt 12 via the spring washer 32. Then, the stopper function of the stopper mechanism 8 can be easily restored.

As described above, the stopper function of the stopper mechanism 8 in the vibration isolation frame described above can be easily fixed and restored by the upper nut 30 and the fixing plate 50, so that the vibration isolation target device 10 is placed on the upper side. In addition to being able to be transported while mounted on the gantry 2, there is no need to readjust the anti-vibration gantry after transportation, and the problem inherent in the conventional anti-vibration gantry is advantageous. Since it can be eliminated, the advantage of being able to reduce the cost of transportation, packing, and readjustment and shorten the installation work period can be enjoyed advantageously. Moreover, since the upper gantry 2 is held and transported by the mounting bolt 12 in a state of being sandwiched between the upper vibration isolator member 20 and the lower vibration isolator member 26, the upper anti-vibration member 10 is used for the vibration isolation target device 10. It is also possible to advantageously reduce the running vibration of the added truck and the impact during loading and unloading by the forklift.

Although the typical embodiments of the present invention have been described in detail above, they are merely examples, and the present invention is limited by specific descriptions relating to such embodiments. It should be understood that it is not interpreted.

For example, in the above-described embodiment, the vibration generating device is mentioned as the vibration isolation target device 10, and the vibration generated in the vibration generating device is suppressed or prevented from being transmitted from the upper pedestal 2 to the lower pedestal 4. An example in which the present invention is applied to a vibration-proof pedestal having such a structure has been clarified, but the present invention is by no means limited to such a vibration-proof pedestal, and is used for precision equipment. Also for anti-vibration pedestals with a structure that suppresses or prevents vibration transmission from the lower pedestal 4 to the upper pedestal 2, which is adopted when such equipment that dislikes vibration is mounted on the upper pedestal 2. , The present invention can be applied advantageously.

Further, in the present invention, as a vibration-proof mount 6 installed between the upper pedestal 2 and the lower pedestal 4 to suppress or prevent vibration transmission between the two pedestals, as pointed out earlier, conventional methods have been used. Various known anti-vibration mounts can be used as they are, and specifically, they are disclosed in JP-A-2005-220936, JP-A-2007-22604, JP-A-2012-26542 and the like. The anti-vibration mount structure will be used as it is.

Further, as a structure for fixing the mounting bolt 12 to the horizontal portion 4h of the lower pedestal 4 in the small diameter portion 12bs of the leg portion 12b, the illustrated structure is the most desirable, but the mounting bolt 12 is It goes without saying that any known structure can be adopted as long as it can be fixed to the lower pedestal 4 in the small diameter portion 12bs of the leg portion 12b.

In addition, in the fixing plate 50, in addition to the desired shape as shown in the example, it is possible to use a plate-like body having various shapes that can be inserted from the side into the mounting bolt 12, and the fixing plate 50 thereof. As a retaining means arranged on the fixing plate 50 as described above, instead of the hexagon socket head bolt 52 as illustrated, a pin is erected, the end is bent, or the ends are connected to each other to connect the mounting bolt. It is also possible to adopt a configuration such as arranging a member capable of selectively closing and opening the opening of the portion where the leg portion 12b of the twelve is inserted.

In the illustrated embodiment, as the upper anti-vibration member 20, a member composed of a plate-shaped anti-vibration body 20a and a saucer member 20b for accommodating the plate-shaped anti-vibration body 20a is adopted. It is possible to enjoy the actions and effects as described in JP-48077, but instead of this, a structure consisting of only a simple plate-shaped anti-vibration body such as the lower anti-vibration member 26. It can also be used as.

Further, the elastic material constituting the plate-shaped anti-vibration body 20a and the lower anti-vibration member 26 in the upper anti-vibration member 20 is not limited to the illustrated rubber and urethane, and various known elastic materials are used. It is possible. In short, in such an anti-vibration body 20a and a lower anti-vibration member 26, the upper gantry 2 (horizontal portion 2h) and the lower gantry 4 (horizontal portion 4h) are rigidly connected via a mounting bolt 12. It suffices as long as it has a function of suppressing or preventing the direct transmission of vibration between them.

In addition, although not listed one by one, the present invention can be implemented in embodiments with various modifications, modifications, improvements, etc., based on the knowledge of those skilled in the art, and such embodiments are: It goes without saying that all of them belong to the category of the present invention as long as they do not deviate from the gist of the present invention.

2 Upper pedestal 2h, 4h Horizontal part 4 Lower pedestal 8 Stopper mechanism 10 Anti-vibration target device 12 Mounting bolt 12a Head 12b Leg 12bl Large diameter part 12bs Small diameter part 14, 33 Mounting holes 18a, 18b Clearance 20 Upper anti-vibration member 22 Upper washer 24, 32, 38, 46 Spring washer 26 Lower anti-vibration member 28 Lower washer 30 Upper nut 34 Washer with nut 36 Washer 40 Lower nut 42 Through hole 44 Fixing bolt 50 Fixing plate 52 Hexagon socket head cap screw

Claims (7)

It is installed between the upper pedestal on which the anti-vibration target device is mounted, the lower pedestal arranged below the upper pedestal, and the upper pedestal and the lower pedestal, and suppresses vibration transmission between the two pedestals. Or, in the form of a vibration-proof mount that blocks or is arranged side by side on the vibration-proof mount, it is arranged between the opposite horizontal portions of the upper pedestal and the lower pedestal, and excessive displacement between the two pedestals. In a vibration-proof pedestal equipped with a stopper mechanism to prevent
The stopper mechanism has a leg portion on the head side having a large diameter portion, while a portion on the tip end side of the leg portion has a small diameter portion, and a screw is formed on the outer peripheral surface of the small diameter portion. It has a mounting bolt with a structure, and the large diameter part of the leg of the mounting bolt is in the mounting hole provided in the horizontal part of the upper pedestal, and the head of the mounting bolt is above the horizontal part of the upper pedestal. Between the large diameter part and the small diameter part of the mounting bolt by tightening the upper nut screwed into the small diameter part of the leg of the mounting bolt while being inserted so as to be located in the position and movable in the horizontal direction. The mounting bolts are mounted so as to form a predetermined clearance with respect to the horizontal portion of the upper pedestal by contact with the step portion, while the mounting bolts are attached to the lower side of the small diameter portion of the leg portion. A washer with a nut is provided in the nut portion of the leg portion that is movably inserted into a mounting hole provided in the horizontal portion of the gantry and projects downward from the horizontal portion of the lower gantry. Along with being screwed, a fixing bolt movably inserted in a through hole provided in a horizontal portion of the lower gantry is screwed into the washer portion of the washer with a nut. While the washer with a nut is fixed to the horizontal portion of the lower pedestal, the horizontal portion of the lower pedestal is lowered by tightening the lower nut screwed into the small diameter portion of the leg portion of the mounting bolt. by sandwiched between the side nut and the nut washer, by mounting bolts are allowed fixed to the horizontal portion of the lower frame at mounting bolt, connecting them with the upper frame and the lower cradle Anti-vibration pedestal characterized by being bolted. An upper washer and an upper anti-vibration member are interposed between the head of the mounting bolt and the horizontal portion of the upper gantry so that the upper anti-vibration member is located on the horizontal portion side of the upper gantry. A lower anti-vibration member and a lower washer are placed between the horizontal portion of the upper gantry and the upper nut screwed into the small diameter portion of the mounting bolt, and the lower anti-vibration member is horizontal to the upper gantry. The clearance is formed between the horizontal portion of the upper pedestal and the lower anti-vibration member by tightening the upper nut so as to be located on the portion side. The anti-vibration stand according to claim 1. The upper anti-vibration member is composed of a plate-shaped anti-vibration body and a saucer member accommodating a lower portion of the anti-vibration body, and the saucer member is placed on a horizontal portion of the upper pedestal. The anti-vibration stand according to claim 2, which is attached in the above. In the anti-vibration pedestal according to any one of claims 1 to 3 , a plate-shaped fixing plate is inserted between the horizontal portion of the upper pedestal and the upper nut, and the clearance disappears. A fixed structure of a vibration-proof pedestal, characterized in that the horizontal portion of the upper pedestal and the horizontal portion of the lower pedestal are fixedly connected by the mounting bolts by being squeezed. A lower anti-vibration member and a lower washer are interposed between the horizontal portion of the upper gantry and the upper nut so that the lower anti-vibration member is located on the horizontal portion side of the upper gantry. The anti-vibration pedestal fixing structure according to claim 4 , wherein the fixing plate is interposed between the lower washer and the upper nut. The fixing plate has a U-shaped planar shape, and the fixing plate is in a form in which the legs of the mounting bolt are inserted into the gap between the two opposing free ends of the U-shape. The fixed structure of the anti-vibration pedestal according to claim 4 or 5, wherein the anti-vibration pedestal is inserted. The fixing plate has a retaining means disposed at the tip end side portions of the two U-shaped free ends, and the retaining means causes the fixing plate to be connected to the horizontal portion of the upper pedestal. The fixing structure of the anti-vibration pedestal according to claim 6 , which is prevented from coming out from between the upper nuts.

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