JP2012026542A - Vibration proof mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a rod shaped member against damage due to vibration, the rod shaped member restricting the interval of the upper and the lower mounts which constitute the vibration proof mount.SOLUTION: The vibration proof unit 30, which is provided between the upper mount 2 and the lower mount 3, consists of an upper vibration absorbing rubber 32U, a lower vibration absorbing rubber 32B and the partition plate 33M which is arranged between them. The upper and lower regulation plates 41U, 41B, which constitute the mount interval restriction unit 40, are attached to the upper mount 2 and the lower mount 3, and the bolt 42 is fixed to the regulation plate 41B and extended upwards penetrating the through hole 43 which is bored in the regulation plate 41U. The stopper plate 44 and the over load prevention plate 45 are provided to the bolt 42, and the stopper plate 44 is contacted with the regulation plate 41U if the lower mount 3 becomes free, and separated from the regulation plate 41U if the load acts on the vibration proof unit 34. The protection sleeve 46 is fitted to the bolt 42 so as to be sandwiched between the stopper plate 44 and the over load prevention plate 45.

Description

  The present invention relates to an anti-vibration stand for anti-vibration support of an article when the article is transported.

  When transporting an article, if the article to be transported is large and heavy, pack the article to be transported on a mount made of pallets, etc., and transport the mount by means of transfer means such as a forklift. It is common to load on and off the means of transportation. And in order to suppress the vibration of the articles | goods at the time of transport or transfer, the anti-vibration stand which used the stand as a vibration-proof structure is used.

  As an example of an anti-vibration stand, for example, what is disclosed in Patent Document 1 is conventionally known. In the vibration isolating frame of Patent Document 1, the frame is divided into a lower frame and an upper frame, and a vibration isolator is interposed between the lower frame and the upper frame. The anti-vibration device is configured to include an anti-vibration unit in which donut-shaped anti-vibration rubbers are stacked in three stages. The upper anti-vibration rubber is held on the upper frame, the lower anti-vibration rubber is held on the lower frame, and the middle anti-vibration rubber is arranged between the upper and lower anti-vibration rubbers. A high-damping rubber is used as the material of the anti-vibration rubber provided in these three stages, and a partition plate is interposed between the anti-vibration rubbers of these stages.

  The anti-vibration device having the above configuration is arranged between the upper and lower mounts at different positions, and a space for inserting a fork lift fork is formed between adjacent anti-vibration units. ing. In addition, when the vibration isolator is lifted by a forklift, the anti-vibration device is provided with a base separation preventing member so as to prevent the lower base and the upper base from being separated.

  Here, in the configuration of Patent Document 1, a vibration-proof unit is not directly attached to the lower base, but a support member formed by bending a metal plate is fixed to the lower base, and the vibration-proof unit is provided by this support member. The unit is supported while being separated from the upper surface of the undercarriage. A support plate is also fixedly provided on the upper base side, and a bolt is fixedly provided on the support plate. The support member on the lower frame side is provided with a through hole for inserting the bolt, and the bolt extended from the support plate on the upper frame side is positioned at the upper and lower positions sandwiching the support member provided with the through hole. A pair of stopper members are fixed. These bolts and stopper members constitute a gantry separation preventing member that prevents the upper and lower gantry from separating.

  When the vibration isolator is in an unloaded state, the stopper member positioned on the lower side of the support member comes into contact with the lower surface of the support member. When the load of the article is applied to the upper base, the bolt is lowered together with the support member. On the other hand, when a load is applied to the upper base, the stopper member on the upper side is separated from the support member, and the stopper member located on the upper side is close to the support member, but an impact load is applied. The stopper member is held in a non-contact state with the support member unless an extremely heavy article is installed. As a result, when an article is placed on the anti-vibration base, the initial deflection of the anti-vibration member due to the weight of the article is allowed, and when the vibration occurs, the upper base moves up and down, during which vibration is attenuated. Is done. Moreover, although the upper and lower mounts move relatively, they are held so as not to be separated.

  The vibration absorbed by the anti-vibration rubber absorbs not only vertical vibration but also horizontal vibration. Whether in the vertical direction or in the horizontal direction, in order to absorb or mitigate vibrations, the upper frame allows movement in the vertical direction and the vertical direction with respect to the lower frame, although in a limited range. The bolt as a base separation prevention member that connects between the lower base and the upper base has an outer diameter that is smaller than the hole diameter of the through hole in order to allow relative rolling between the upper base and the lower base. A gap is formed between the dimensions. Therefore, when a vibration with a stroke greater than the diameter difference between the through hole and the bolt acts, the outer peripheral surface of the bolt collides with the edge portion of the through hole of the support member, causing damage, and the screw portion formed on the outer peripheral surface of the bolt May be crushed and cannot be removed from the anti-vibration mount.

  In this regard, Patent Document 2 discloses a configuration in which a bolt inserted into a through hole of a support member made of a plate is not damaged. In the configuration of Patent Document 1, in other words, by providing an annular elastic member made of rubber or the like as a vibration isolating member in a through hole provided in the support member, a buffering action when the bolt collides with the through hole. To protect the outer surface of the bolt from damage.

JP 2007-22604 A JP 2004-36714 A

  By the way, as a representative means of transportation, there are land transportation using a truck or the like, sea transportation by ship, and transportation by aircraft is also used. When carrying out marine transportation, goods are loaded onto trucks, and the goods are loaded into the ship from the trucks by cranes as cargo handling equipment installed at the port facility. It will be unloaded and transported again by land. When the article installed on the anti-vibration stand is to be anti-vibrated, vibrations in all directions such as the vertical direction, the horizontal direction, and the inclination direction can be effectively attenuated or suppressed during transportation performed by various means. In addition, the transportation may take a long time, and during that time, the article is held while being installed on the vibration isolator.

  The bolts constituting the gantry separation preventing member frequently move during transportation, and impacts are repeatedly applied to the vibration isolating member. If the article installed on the anti-vibration base is light, if a heavy article is installed on the anti-vibration base, the inertial force when the bolt collides with the anti-vibration member increases, and it is repeated. The anti-vibration member may be damaged by the collision, and the original function may not be exhibited. In addition, the bolt moves not only in the vertical and horizontal directions but also in the tilting direction and the twisting direction during transportation, and a complicated movement is performed. In addition, the vibration-proofing member is deteriorated, for example, when it is placed in an atmosphere containing a large amount of salt for a long period of time such as sea transportation, and the adhesive for fixing the vibration-proofing member to the support member is deteriorated. There is also a possibility that the sticking property may be lost, and the case where the sticking of the support member falls off may occur.

  The present invention has been made in view of the above points. The object of the present invention is to prevent a rod-shaped member used to limit the distance between the upper and lower frames constituting the vibration isolation frame from being damaged by vibration. Is to protect.

  In order to achieve the above-described object, the present invention comprises an anti-vibration frame comprising an upper frame and a lower frame, and a vibration isolation member unit interposed between the upper and lower frames, and an article is placed on the upper frame. The anti-vibration member unit includes one or a plurality of anti-vibration members provided between the upper frame and the lower frame, and a frame interval restriction interposed between the upper frame and the lower frame. The pedestal distance limiting means comprises a plurality of opposing restricting portions provided on each of the upper pedestal side and the lower pedestal side, support rods fixed to one of the restricting portions, and the other restricting portion. And a stopper provided in the support rod. The stopper is provided at a position passing through the through-hole of the support rod, and the lower mount is free. In contact with the other restricting portion When the load is applied to the vibration isolating unit, the anti-vibration unit is separated from the other restricting portion, and a protective sleeve is fitted between the restricting portions on the support rod, and the protective sleeve is It is characterized in that it is configured to be inserted through the through hole.

  The anti-vibration unit has an anti-vibration member that absorbs or relieves vibration. The anti-vibration member absorbs vibrations in the vertical direction, the horizontal direction, and the tilt direction, and includes a coil spring or the like. However, it is desirable to use anti-vibration rubber from the standpoint of less risk of resonance. In the case of using a vibration-proof rubber, it is desirable to use a rubber having a circular cross-section and molded into a donut shape. This vibration-proof rubber can be composed of one to a plurality of stages. In the case of a multistage structure of a plurality of anti-vibration rubbers, a relative position shift is prevented by interposing a partition plate between the anti-vibration rubbers of each stage.

  The vibration behavior differs depending on the shape, structure, weight, etc. of the article that is installed on the vibration isolator and transported. When the vibration isolating member is made of an anti-vibration rubber and the anti-vibration rubber is provided in multiple stages, an optimum anti-vibration function can be exhibited according to the characteristics of the article, the transportation method, and the like. For example, when the position of the center of gravity of the article is high, a resonance phenomenon may occur during horizontal vibration. In this case, the lateral vibration of the vibration isolating member is suppressed to some extent in order to give the vibration isolating rubber constituting the vibration isolating member a certain degree of rigidity and keep it as stationary as possible to prevent the article from resonating. Is preferable. Further, when shocking vibrations in the vertical direction occur, the number of steps of the anti-vibration rubber is increased.

  The upper and lower frames are not separable, and a frame interval limiting means is provided between them so that the upper and lower frames are not separated, and are connected so as to be close to and away from each other by a predetermined interval. That is, a restricting portion made of a metal plate or the like is fixedly provided on the upper frame side and the lower frame side, and a support rod is provided to restrict the vertical movement of both restriction portions. These restricting portions are not limited to the case where they are directly fixed to the upper and lower frames. The support rod is fixed to one restricting portion, and the other restricting portion is formed with a through hole through which the support rod is inserted. Any of these restricting sections may be on the upper platform side, and any of them may be on the lower platform side. A support rod is comprised from a volt | bolt and a control part can be clamped with an upper and lower nut. As a result, the support rod can be attached to and detached from the restricting portion.

  The support rod is allowed to pass through the through hole with respect to the restricting portion in which the through hole is drilled, and a stopper is provided at a position through the through hole. The stopper is for holding the lower base and the upper base so as not to be separated when the lower base is lifted by lifting it with a crane or lifting it with a forklift. As this stopper, a material obtained by attaching an elastic member such as rubber to the surface of a strong metal plate can be used. Further, by disposing the elastic member so as to face the restricting portion, it is possible to provide buffering when the stopper comes into contact with the restricting portion.

  The support rod is inserted into the through hole formed in the restricting portion in a loose fit state. As a result, the upper base and the lower base are coupled so as not to be separated, and can be relatively moved in the horizontal direction. Therefore, when the vibration in the horizontal direction and the tilt direction is generated with respect to the vibration isolator, the movement is allowed within a limited range. When the upper platform is laterally displaced or when the lower platform is in a free state, the support rod collides with the edge of the through hole. If this is repeated, the support rod will be damaged. In particular, when an article mounted on a vibration isolator is suspended by a crane and unloaded from a ship or unloaded from a ship, the support base is in a free state, so the support rod collides with the edge of the through hole. Opportunity to do.

  Considering the above points, in order to protect the support rod, a protective sleeve is fitted to the support rod. The protective sleeve can be composed of an elastic member such as rubber, and can be a hard member such as metal or plastic. In any case, the protective sleeve is held between the upper and lower restricting portions. Thereby, there is no possibility of dropping from the support rod. Moreover, since it moves up and down together with the support rod, the positions where the protective sleeve and the through hole collide are dispersed. Therefore, it is possible to suppress the occurrence of damage or the like due to the protective sleeve locally colliding with the edge of the through hole.

  Damage to the support rod and the restricting portion is suppressed by the protective sleeve. In order to allow the vibration isolation frame to be displaced in the horizontal direction or the tilt direction, a predetermined gap is formed between at least one of the protection sleeve and the support rod and between the protection sleeve and the peripheral wall of the through hole. So that Increasing the diameter of the support rod to a certain extent and increasing the number of support rods can control the lateral displacement between the upper and lower mounts, and even if the center of gravity of the article is at a high place, vibration is generated. Stability at the time can be ensured.

  When vibration is generated in the vibration isolation frame, the rubber constituting the vibration isolation member of the vibration isolation device is compressed and deformed. This anti-vibration rubber must not be compressed to the extent that it is over-compressed and the elastic restoring force is lost. Therefore, in order to prevent the vibration isolating rubber from being compressed to the elastic limit, an overload preventing member can be provided on the opposite surface across the regulating portion with respect to the portion where the stopper is provided on the support rod. . This overload prevention member is for restricting the maximum compression amount of the upper and lower vibration isolation members by the article placed on the vibration isolation frame, and the elastic change is such that the vibration isolation member exhibits the vibration isolation function. However, even if a load of a predetermined amount or more is applied, the anti-vibration rubber is not compressed until the anti-vibration rubber reaches the elastic limit by the action of the overload prevention member, and the anti-vibration member is protected. As the overload prevention member, a member obtained by attaching an elastic member such as rubber to the surface of a strong metal plate is used as in the stopper.

  The rod-shaped member used to limit the distance between the upper and lower frames constituting the vibration isolating frame is effectively protected so that the rod-shaped member and the like are not damaged by vibration.

It is a top view of the upper frame which comprises a vibration isolator frame. It is a top view of an undercarriage. It is a front view which shows the state which assembled | attached the upper and lower bases via the vibration isolator in the middle. It is a bottom view of a prevention device. It is AA sectional drawing of FIG. It is sectional drawing which shows the structure of a mount frame space | interval restriction | limiting means. It is an external appearance perspective view of a protection sleeve. It is operation | movement explanatory drawing of the anti-vibration apparatus and gantry space | interval control means in an unloaded state. It is operation | movement explanatory drawing of the anti-vibration apparatus and gantry space | interval control means at the time of load work.

    Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, FIG. 1 to FIG. 3 show an embodiment of the present invention. In the figure, reference numeral 1 denotes an anti-vibration gantry 1, and the anti-vibration gantry 1 comprises the upper gantry 2 shown in FIG. 1 and the lower gantry 3 shown in FIG. 2, as shown in FIG. Assembled into.

  The upper pedestal 2 has a skeleton structure portion 10 composed of a rectangular frame 10a and a plurality of beams 10b provided vertically and horizontally between two opposite sides of the frame 10. Here, the frame 10a and the beam 10b are made of a box-shaped metal member having a quadrangular cross section. Four pedestals 11 are fixedly provided on the upper surface of the frame structure portion 10. When placing an article on the vibration isolator 1, the article is placed on the pedestal 11.

  On the other hand, the lower gantry 3 shown in FIG. 2 is similar to the upper gantry 2 from a rectangular frame 20a and a plurality of beams 20b provided vertically and horizontally between two opposite sides of the frame 20a. It has the frame structure part 20 comprised. The frame 20a and the beam 20b are both box-shaped metal members having a quadrangular cross section.

  A vibration isolator 30 is interposed between the upper base 2 and the lower base 3. The anti-vibration device 30 is provided in a total of six locations including four corners between the upper base 2 and the lower base 3 and intermediate positions on two opposite sides. On the lower surface of the upper gantry 2 and the upper surface of the lower gantry 3, mounting plates 12 and 22 for mounting the vibration isolator 30 are provided. Further, as is apparent from FIG. 3, a space is formed between the portions where the vibration isolator 30 is provided, and a fork insertion space for inserting a fork of a forklift between the adjacent vibration isolator 30 and 30 is provided. 4 and 4 are formed.

  The structure of the vibration isolator 30 is shown in FIGS. 4 is a plan view, and FIG. 5 is a cross-sectional view taken along line AA of FIG. The anti-vibration mechanism 30 is composed of a bottom case 31B and a lid-side case 31U that are formed in a rectangular box shape, and an anti-vibration member is interposed between the cases 31B and 31U. This anti-vibration member is composed of two upper and lower anti-vibration rubbers 32B and 32U, and these anti-vibration rubbers 32B and 32U have a donut shape with a circular cross section, as is apparent from FIG. The anti-vibration rubbers 32B and 32U are preferably made of high damping rubber. The anti-vibration rubber 32U provided in the lid-side case 31U is an upper-side anti-vibration member, and the anti-vibration rubber 32B provided in the bottom-side case 31B is a lower-side anti-vibration member. And between the inner surface of the lid side case 31U and the upper surface of the upper side anti-vibration rubber 32U, between the upper side anti-vibration rubber 32U and the lower side anti-vibration rubber 32B, and between the lower side anti-vibration rubber 32B and the bottom side case 31B. In the space, partition plates 33U, 33M, and 33B are provided, respectively. Although illustration is omitted, a plurality of protrusions are provided on the lower surface of the partition plate 33U, the upper and lower surfaces of the partition plate 33M, and the upper surface of the partition plate 33B, respectively, and the partition plates 33U and 33M of the anti-vibration rubbers 32U and 32B are provided. , 33B is provided with a recess on the contact surface, and the lateral displacement of the anti-vibration rubbers 32U, 32B is restricted by fitting the concave and convex portions.

  The anti-vibration unit 34 is composed of a pair of upper and lower anti-vibration rubbers 32U and 32B, and the anti-vibration unit 34 is provided at four locations between the cases 31U and 31B. Positioning pins 35B project downward from the portion of the bottom case 31B where the vibration isolation units 34 are provided, and the vibration isolation units 34 are arranged on the top surface of the lid side case 31U. A positioning pin 35U is provided at the installation position. In the present embodiment, the positioning pins 35U and 35B are both made of bolts and fixed by screwing into the cases 31U and 31B, respectively. In the mounting plate 12 provided on the lower surface of the upper base 2 and the mounting plate 22 provided on the upper surface of the lower base 3, four pin insertion holes 12a and 22a are formed, respectively. Positioning pins 35U provided on the lid side case 31 and positioning pins 35B provided on the bottom side case 31B are inserted into the pin insertion holes 12a and 22a. 2 and the lower base 3 are fixedly held at a predetermined position.

  Further, the connecting pin 36 is fixedly provided on the lid side case 31U, and the central portion of the bottom case 31B protrudes toward the lid side case 31U. An insertion hole 37 is formed in the projecting portion 31 </ b> P, and the connecting pin 36 is inserted through the insertion hole 37. A connection maintaining plate 38 is provided at a position passing through the insertion hole 37 of the connection pin 36. When the vibration isolator 30 is unloaded, the connection maintaining plate 38 contacts the lower surface of the protruding portion 31P of the bottom case 31B. When the article is placed on the base 11, the vibration isolating rubbers 32U and 32B are compressed. Therefore, the connection maintaining plate 38 is separated from the lower surface of the protruding portion 31P.

  Although the vibration isolator 30 is interposed between the upper base 2 and the lower base 3, the vibration isolator 30 is not in a fixed relationship with the upper base 2 and the lower base 3. Between the upper platform 2 and the lower platform 3, there is a platform interval limiting means 40 that restricts the movement in the approaching / separating direction so as not to be separated beyond a predetermined interval, as shown in FIG. Is provided.

  As shown in FIGS. 1 and 2, the gantry interval limiting means 40 is provided in two sets at eight positions near the four corners of the frames 10a and 20a, for a total of eight places. The gantry interval limiting means 40 is provided at the position facing the upper side regulation plate 41U, the upper side regulation plate 41U provided by being fixed to the side surface of the beam 10b of the upper gantry 2 by welding means, and the beam of the lower gantry 3 It is comprised from the lower side regulation board 41B provided by fixing to the side surface of 20b with the welding means, and the volt | bolt 42 as a support rod.

  The bolt 42 is fixed to the lower-side regulating plate 41B and extends upward from the fixed position. On the other hand, a through hole 43 through which the bolt 42 passes is formed in the upper side regulation plate 41U. The bolt 42 is fixedly provided with a stopper plate 44 that faces the upper surface of the upper regulating plate 41U, and the overload prevention plate of the vibration isolator 30 so as to face the lower surface of the upper regulating plate 41U. 45 is provided. The stopper plate 44 and the overload prevention plate 45 are respectively composed of metal plates 44a and 45a and elastic sheets 44b and 45b attached to the surfaces thereof. The elastic sheets 44b and 45b are connected to the upper side regulation plate 41U. It faces each of the upper and lower surfaces.

  Further, a protection sleeve 46 shown in FIG. 7 is fitted in a portion of the bolt 42 between the stopper plate 44 and the overload prevention plate 45. The protective sleeve 46 is sandwiched between the stopper plate 44 and the overload prevention plate 45, and therefore cannot move in the vertical direction of the bolt 42. The protective sleeve 46 can be formed of a hard member such as metal or hard plastic, or can be formed of an elastic member made of rubber or a rubber-like substance.

  In the present embodiment, the protective sleeve 46 is made of a hard member made of, for example, high hardness rubber or plastic, and between the inner diameter and the outer diameter of the bolt 42 and between the inner peripheral wall of the through hole 43. Has a predetermined gap. By providing a difference in diameter between the inner diameter of the protective sleeve 46 and the outer diameter of the bolt 42, even if a large impact force acts between them, the threaded portion of the bolt 42 is protected from damage. On the other hand, the difference in diameter between the outer diameter of the protective sleeve 46 and the inner peripheral wall of the through-hole 43 is caused when vibration that causes a large lateral deviation between the upper base 2 and the lower base 3 of the vibration isolator base 1 occurs. In addition, the bolt 42 and the protective sleeve 46 are laterally displaced in the through hole 43, so that the relative movement between the upper frame 2 and the lower frame 3 is possible within a limited range.

  As a result, relative movement in the horizontal direction between the upper and lower frames 2 and 3 becomes possible, and the anti-vibration function by the anti-vibration rubbers 32U and 32B can be exhibited, and the roll of the upper frame 2 is within the set range. It comes to regulate. In addition, it is the protective sleeve 46 that collides with the inner wall of the through hole 43, particularly the edge portion, during this rolling, and the bolt 42 does not directly collide with the inner wall surface of the through hole 43 to cause damage or the like. . Further, since the protective sleeve 46 moves up and down in conjunction with the bolt 42, the portions that collide with the edge of the through hole 43 are dispersed, so that the protective sleeve 46 is not repeatedly subjected to local impacts, and accordingly. The durability of the protective sleeve 46 is also obtained. Of course, since the protective sleeve 46 is sandwiched between the stopper plate 44 and the overload prevention plate 45, there is no possibility that the protective sleeve 46 will fall off the bolt 42 during operation.

  A plurality of nuts 47 are screwed into the bolt 42 so that the positions of the stopper plate 44 and the overload prevention plate 45 in the axial direction can be adjusted. Therefore, when the vibration isolator 1 is lifted, the stopper plate 44 comes into contact with the upper surface of the upper side restricting plate 41U. As a result, as shown in FIG. 8, there is a gap between the upper stand 2 and the lower stand 3. It is held so as not to separate. At this time, the overload prevention plate 45 is kept in a non-contact state with the upper side regulation plate 41U. When a load acts on the upper base 2 from above, the anti-vibration rubbers 32U and 32B in the anti-vibration device 30 are compressed as shown in FIG. For example, when an impact load is applied and the anti-vibration rubbers 32U and 32B try to be extremely compressed, the overload prevention plate 45 comes into contact with the lower surface of the upper side regulation plate 41U, and the anti-vibration rubber 32U and 32B are protected from being compressed and deformed to the elastic limit.

  The anti-vibration frame 1 can be lifted by inserting a fork of a forklift into the fork insertion space 4 with an article placed and fixed on the upper frame 2, but can also be suspended by a crane. ing. In order to allow the crane to hang, as shown in FIGS. 1 and 3, hook hanging members 50 for hanging the crane hooks are provided at approximately four corners on the upper surface of the upper platform 2. Projected.

  The anti-vibration base 1 is fixed on the lower base 3 by inserting positioning pins 35B suspended from a bottom case 31B constituting the case 31 of the anti-vibration device 30 into pin insertion holes 22a provided on the mounting plate 22. Is done. And the upper stand 2 will be mounted on the upper part of the vibration isolator 30, and the positioning pin 35U erected from the lid side case 31U in the pin insertion hole 12a of the mounting plate 12 provided on the upper stand 2. Is inserted. As a result, the upper and lower frames 2 and 3 are assembled at the upper and lower positions with the vibration isolator 30 interposed therebetween.

  In this state, the pedestals 2 and 3 and the vibration isolator 30 are not in a fixed relationship. Therefore, the frame interval limiting means 40 is assembled. That is, the bolt 42 is inserted into the upper and lower regulating plates 41U and 41B and fixed to the regulating plate 41B with a nut 47, and the stopper plate 44 and the overload prevention plate 45 are interposed between the bolts 42. A protective sleeve 46 is attached. Thereby, the bases 2 and 3 to which the restriction plates 41U and 41B are fixed are held in the connected state.

  The article to be transported is placed on the pedestal 11 provided on the upper gantry 2 on the anti-vibration gantry 1 incorporated in this manner. Here, when the article to be transported has four legs, the four pedestals 11 shown in FIG. 1 are provided. Therefore, the pedestal 11 has an appropriate shape according to the article to be placed. The articles placed on the pedestal 11 are appropriately packed in order to protect them.

  For example, when an article is loaded on a truck from a production factory, transported to a port facility, transferred to a ship with a crane, and transported by sea, the anti-vibration mount 1 on which the article is placed is first loaded by a forklift. It is loaded on the truck bed. That is, the fork of the forklift is inserted into the fork insertion space 4 formed between the upper base 2 and the lower base 3, the fork is lifted, placed on the truck bed, and the fork is pulled down so that the lower base 3 is Placed on the carrier. At this time, the article is hardly vibrated or shocked by carefully operating the forklift.

  When transporting by truck, vertical vibrations act on the anti-vibration mount 1 due to unevenness of the road surface. Further, when the track is accelerated or decelerated, and when the vehicle is traveling on a curve, vibration in the tilt direction also acts. While such vibration is transmitted from the lower pedestal 3 to the upper pedestal 2 via the anti-vibration device 30, it is absorbed or damped by the elasticity of the anti-vibration rubbers 32B and 32U, and almost all vibration is transmitted to the article. There is no.

  When transported to the port facility by trucking, it is transferred to the ship directly or via other transportation means. This transfer to the ship is performed using a crane. A crane hook is hooked on a hook hanging member 50 at a required location on the upper platform 2 and is transferred to a ship so as to be hung. When pulling up the anti-vibration mount 1 on which the article is placed, vibration and impact do not act exceptionally. The anti-vibration gantry 1 has its upper gantry 2 suspended, but the lower gantry 3 is connected to the upper gantry 2 via the gantry interval limiting means 40, that is, the stopper plate 44 is provided with the upper side regulating plate 41U. Since there is no lowering from the position where it abuts on the upper surface, there is no possibility that the gantry 3 will drop off. Needless to say, when the vibration isolator 1 is lifted by a forklift, the undercarriage 3 will not drop off.

  Although the horizontal displacement may occur between the upper and lower mounts 2 and 3 when the crane turns, the bolt 42 constituting the mount interval limiting means 40 is fitted to the protective sleeve 46, so that the upper and lower mounts 2 and 2 are fitted. Even if a lateral displacement occurs between the three, the protective sleeve 46 exhibits a buffering action even if the bolt 42 collides with the inner wall surface or edge portion of the through hole 43 formed in the upper regulating plate 41U. And the through-hole 43 is not damaged, and no impact is transmitted from the lower mount 3 to the upper mount 2.

  When the anti-vibration mount 1 on which the article is placed by the crane is installed at a predetermined position in the ship, an impact acts. However, the vibration isolator 30 exhibits a buffering action by the expansion and contraction of the upper and lower vibration isolating rubbers 32U and 32B, and the article placed on the vibration isolating rack 1 can be protected. Here, if the anti-vibration rubbers 32U and 32B are excessively compressed, the anti-vibration rubbers 32U and 32B are damaged, but the overload prevention plate 45 provided on the bolt 42 comes into contact with the upper side regulation plate 41U. Since it is not elastically deformed any more, the anti-vibration rubbers 32U and 32B can be protected.

  At the time of marine transportation by ship, a large vibration in the vertical direction does not occur with respect to the vibration isolator 1, but a movement in a shaking direction such as a horizontal vibration or rolling occurs. The vibration isolator 30 has a vibration isolating structure in which the vibration isolating member and the partition plate are alternately laminated, so that the vibration becomes large with respect to vibration over a long period. However, the anti-vibration member has a two-stage structure of a lower-side anti-vibration rubber 32B and an upper-side anti-vibration rubber 32U, and the upper base 2 is inserted by inserting a bolt 42 fitted with a protective sleeve 46 into the through hole 43. Since the movement in the horizontal direction with respect to the undercarriage 3 is restricted, movements such as horizontal shaking and rolling can be effectively restricted.

  When the article arrives at the destination, it is unloaded from the ship and switched to trucking. At this time, the anti-vibration stand 1 performs the same function as described above, and the article is protected. It will be safe to transport.

DESCRIPTION OF SYMBOLS 1 Anti-vibration stand 2 Upper stand 3 Lower stand 10, 20 Frame structure part 10a, 20a Frame 10b, 20b Beam 12, 22 Mounting plate 12a, 22a Pin insertion hole 30 Anti-vibration device 31 Case 32U, 32B Anti-vibration rubber 33U, 33M, 33B Partition plate 34 Anti-vibration unit 35U, 35B Positioning pin 40 Base spacing limit member 41U, 41B Restriction plate 42 Bolt 43 Through hole 44 Stopper plate 45 Overload prevention plate 46 Protective sleeve

Claims (3)

An anti-vibration base comprising an upper base and a lower base, and a vibration isolating member unit interposed between the upper and lower bases, and an article is placed on the upper base,
The anti-vibration member unit includes one or a plurality of anti-vibration members provided between the upper frame and the lower frame, and a frame interval limiting unit interposed between the upper frame and the lower frame. ,
The pedestal interval limiting means is provided in a plurality of opposing restricting portions provided on the upper pedestal side and the lower pedestal side, support rods fixed to one restricting portion, and the other restricting portion, A through-hole through which the support rod penetrates, and a stopper provided in the support rod,
The stopper is provided at a position passing through the through hole of the support rod. When the undercarriage is in a free state, the stopper comes into contact with the other regulating portion, and when the load is applied to the vibration isolation unit, the other It is separated from the regulation part,
Furthermore, the support rod has a structure in which a protective sleeve is fitted between the restricting portions, and the protective sleeve is inserted into the through hole. The anti-vibration member is composed of an anti-vibration rubber made of an anti-vibration rubber formed in a donut shape with a circular cross section, and the anti-vibration rubber is overlapped in a plurality of stages so that a partition plate is provided between the anti-vibration rubbers of each stage. The anti-vibration mount according to claim 1, wherein the anti-vibration base is provided. The support rod is provided with an overload preventing member for preventing the vibration isolating member constituting the vibration isolating unit from being excessively compressed at a position opposite to the stopper across the other restricting portion. The anti-vibration mount according to claim 1 or 2, wherein the anti-vibration stand is provided.

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