JP7241258B2 - Anti-vibration device for work machine and work machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device for a work machine such as a component mounter, and a work machine equipped with this vibration damping device.

2. Description of the Related Art Conventionally, a component mounting machine that mounts components on a substrate is known as one of the working machines that perform predetermined work using a working section. A mounter repeats the operation of picking up a component supplied by a component supply unit and mounting it on a board by moving the mounting head, which is a working unit, with respect to a base supported on the floor by legs. do. In such a working machine, since the working part repeats a fixed motion, the repeated motion of the working part may become a vibration source and cause the base to vibrate. The vibration generated in the base table adversely affects the operation of the work machine itself, and may be transmitted to the floor surface to make the worker feel uncomfortable.

As a means of solving this kind of vibration problem, conventionally, vibration isolation rubber was installed on the lower surface of the leg (the contact surface with the floor surface), and the elasticity of the vibration isolation rubber reduced the vibration on the base side. A method of transmitting to the floor side is known (see, for example, Patent Document 1 below).

WO2017/085840

However, if the anti-vibration rubber as described above is relatively soft, the vibration on the floor side can be reduced, but the vibration of the working machine increases. In this case, although the vibration of the work equipment can be reduced, the vibration on the floor side is increased. It was not possible to reduce both at the same time.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a work machine vibration isolator and a work machine equipped with the vibration isolator that can simultaneously reduce both the vibration generated in the work machine and the vibration generated on the floor surface due to the vibration. for the purpose.

A vibration isolator for a work machine according to the present invention is a vibration isolator for a work machine in which a base having a working part is supported on a floor surface by legs, and a vibration isolator is provided between the legs and the floor. a base portion to be installed; a base-side guide provided to project downward from a lower surface of the base facing the floor surface of the base; and a base-side guide provided to project upward from the base portion. A base portion that allows relative movement of the base-side guide in the vertical direction with respect to the base portion while restricting the relative movement of the base-side guide with respect to the base portion in the lateral direction in a state of being in lateral contact with the base portion. a side guide ; and a connecting portion that connects the base portion to the base side guide so as to be relatively movable in the vertical direction, and the base side guide and the base portion side guide are provided on one side. A roller is in rolling contact with a wall surface provided on the other side extending in the vertical direction, so that the base side guide moves relative to the base side in the lateral direction with respect to the base side guide. While regulating the rotation of the roller, the vertical movement of the base-side guide relative to the base portion is permitted. A driving shaft is inserted .

A working machine according to the present invention includes a base having a working portion supported on a floor by legs, the working machine comprising: a base installed between the legs and the floor; A base-side guide projecting downward from the lower surface of the base facing the floor surface of the base, and a base-side guide projecting upward from the base portion and in contact with the base-side guide from the lateral direction. a base-side guide that permits vertical relative movement of the base-side guide with respect to the base while restricting lateral movement of the base-side guide relative to the base; a connecting portion that is connected to the base-side guide so as to be relatively movable in the vertical direction , and the base-side guide and the base-side guide have rollers provided on one side that extend vertically to the other. The base-side guide is rotatably in contact with a wall surface provided on the base so that the base-side guide restricts the relative movement of the base-side guide in the lateral direction with respect to the base. The side guides are adapted to allow relative movement in the vertical direction with respect to the base portion, and the rotation shaft of the roller is inserted through a long hole provided in the connecting portion so as to extend in the vertical direction.

According to the present invention, it is possible to simultaneously reduce both the vibration generated in the work machine and the vibration generated in the floor due to this vibration.

1 is a side view of a working machine according to Embodiment 1 of the present invention; 1 is a perspective view of a vibration isolator included in a work machine according to Embodiment 1 of the present invention; FIG. 1 is a side view of a vibration isolator according to Embodiment 1 of the present invention; 1 is a partially exploded perspective view of a vibration isolator according to Embodiment 1 of the present invention; 1 is a side view of a vibration isolator according to Embodiment 1 of the present invention; The side view of the anti-vibration device provided in the working machine according to Embodiment 2 of the present invention A perspective view of a vibration isolator included in a working machine according to Embodiment 3 of the present invention. Partial cross-sectional side view of a vibration isolator according to Embodiment 3 of the present invention

(Embodiment 1)
FIG. 1 shows a working machine 1 according to Embodiment 1 of the present invention. The work machine 1 is a component mounting machine that mounts components BH on a board KB supplied from the upstream process side and carries out the component BH to the downstream process side. It has a head moving mechanism 15, a mounting head 16, a component camera 17, a control device 18, and the like. In the first embodiment, for convenience of explanation, the flow direction of the substrate KB is the X-axis direction, the horizontal direction perpendicular to the X-axis direction is the Y-axis direction, and the vertical direction is the Z-axis direction. One side of the work machine 1 along the Y-axis direction is the front side, and the other side is the rear side.

1 and 2, a plurality of legs 21 extending downward are provided at the bottom of a base 11 of the working machine 1, and the base 11 is supported on the floor FL by the plurality of legs 21. It is A rubber vibration isolator 21G, which is an elastic member, is installed on the lower surface of each leg 21, and the base 11 is supported on the floor FL via the rubber vibration insulator 21G of each leg 21. there is A vibration isolator 22 is attached to each of the plurality of legs 21 . Details of the anti-vibration device 22 will be described later.

The board transfer section 12 is composed of a conveyor device, and is provided extending in the X-axis direction on the upper surface side of the base 11 . The substrate transport unit 12 transports the substrate KB supplied from the upstream process side in the X-axis direction and positions it at a predetermined working position.

In FIG. 1, the feeder carriage 13 is connected to the front side and the rear side of the base 11 respectively. A plate-like feeder base portion 13B extending in the horizontal plane is provided on the upper portion of the feeder carriage 13 . A plurality of parts feeders 14 are attached to the feeder base portion 13B of the feeder carriage 13, and each supply parts BH to the parts supply position 14K.

In FIG. 1, the head moving mechanism 15 includes a fixed beam 15a extending in the Y-axis direction above the base 11, a moving beam 15b extending in the X-axis direction and having one end supported by the fixed beam 15a, It is composed of a moving plate 15c movable in the X-axis direction along a moving beam 15b. The mounting head 16 is attached to a moving plate 15c, and is moved in the horizontal plane by moving the moving beam 15b relative to the fixed beam 15a in the Y-axis direction and moving the moving plate 15c relative to the moving beam 15b in the X-axis direction. be.

In FIG. 1, a plurality of nozzles 16a are attached to the mounting head 16 facing downward. Each of the plurality of nozzles 16a can move vertically (in the Z-axis direction) and rotate about the Z-axis with respect to the mounting head 16 . A vacuum suction force can be generated at the lower end of each nozzle.

In FIG. 1, component cameras 17 are provided on the base 11 in the front area and the rear area, respectively. Each component camera 17 has its imaging field of view directed upward, and images the component BH sucked and held by the mounting head 16 with the nozzle 16a from below.

A control device 18 is provided in the base 11 of the working machine 1 (FIG. 1) and controls the operation of each part of the working machine 1 . When the work machine 1 performs the component mounting work of mounting the components BH on the board KB, first, the board conveying section 12 is operated to carry in the board KB sent from the upstream process side and place the board KB at a predetermined work position. position. After the board transfer section 12 positions the board KB at the work position, each parts feeder 14 supplies the component BH to the component supply position 14K, and the mounting head 16 sucks and holds the component BH with the nozzle 16a.

After the nozzle 16a sucks and holds the component BH, the mounting head 16 moves above the component camera 17, and the component camera 17 images the component BH. The control device 18 detects the position of the component BH based on the image captured by the component camera 17, and uses the detection result to move the mounting head 16 to position the component BH above the target position of the board KB. After positioning the component BH above the target position of the board KB, the control device 18 raises and lowers the nozzle 16a to mount the component BH held by the nozzle 16a on the board KB. As described above, in the working machine 1 of the first embodiment, the mounting head 16 is a working part that performs a predetermined work (component mounting work) on the base 11 . When the operation of mounting the components BH on the board KB as described above is repeatedly executed and the work of mounting the components BH on the board KB is completed, the board conveying section 12 operates to carry out the board KB to the downstream process side. .

Next, the vibration isolator 22 attached to the leg portion 21 of the working machine 1 will be described. 2, 3 and 4, the vibration isolator 22 includes a base portion 31, two base-side guides 32, two base-side guides 33, and four connecting members .

2, 3 and 4, the base portion 31 is composed of a plate-like member having flat upper and lower surfaces. The base portion 31 is installed on the floor FL and interposed between the leg portions 21 . As described above, since the anti-vibration rubber 21G is installed on the lower surface of the leg 21, the base 11 is supported on the floor FL by the leg 21 via the anti-vibration rubber 21G. It's becoming

In FIGS. 2, 3 and 4, the two base-side guides 32 are attached to the lower surface of the base 11 (the surface vertically facing the floor FL and referred to as "base lower surface 11M"). there is The two base-side guides 32 are arranged at positions sandwiching the leg portion 21 from the lateral direction, and each have a shape projecting downward (that is, toward the floor surface FL).

A roller 42 as a rolling member is provided at the lower end of each of the two base-side guides 32 . Each of the two rollers 42 is attached to a rotating shaft 41 extending in the horizontal direction, and is rotatable around a rotating axis 41J, which is the central axis of the rotating shaft 41. As shown in FIG. The two rollers 42 of the two base-side guides 32 are arranged such that the rotation axes 41J are parallel to each other (FIGS. 2 and 3).

2, 3 and 4, two base portion side guides 33 are provided on the base portion 31 respectively. The two base-side guides 33 are arranged at positions sandwiching the two base-side guides 32 from the lateral direction, and each has a shape that protrudes upward. Each of the two base-side guides 33 has vertical wall surfaces 33T facing each other with the two base-side guides 33 interposed therebetween. A roller 42 is in contact with the wall surface 33T of each of the two base portion side guides 33 from the lateral direction.

2, 3 and 4, the four connecting members 34 are attached to the upper surface of the base portion 31, respectively. Two connecting members 34 are provided corresponding to one base-side guide 32, and are provided at positions sandwiching the roller 42 of the base-side guide 32 from the direction in which the rotation axis 41J extends. Each connecting member 34 has an elongated hole 35 extending in the vertical direction at its upper portion. Both ends of the rotating shaft 41 of the roller 42 provided in the side guide 32 are inserted. In this manner, the base portion 31 is connected to the base 11 via the rotation shafts 41 of the two rollers 42 and the four connecting members 34 .

Here, the lower end portion 35a of the long hole 35 of each connecting member 34 is in a state in which the base 11 is supported on the floor FL by the leg portion 21 stepping on the base portion 31 (floor surface installation state). , the rotary shaft 41 in the long hole 35 is provided at a position where it does not come into contact from above (FIG. 3). Therefore, the weight of the base 11 placed on the floor is supported exclusively by the plurality of legs 21 , and the connecting member 34 does not contribute to supporting the weight of the base 11 .

When the base 11 placed on the floor is lifted up by a crane or the like in the factory, all of the plurality of legs 21 are separated from the upper surface of the base 31 (during this time, the two rollers 42 are moves relatively upward on the corresponding wall surface 33T). After that, both ends of the rotation shafts 41 of the two rollers 42 are brought into contact with the upper end portions 35b of the elongated holes 35 of the corresponding two connecting members 34, and the base portion 31 is connected to the four connecting members 34 and The two rollers 42 of the two base-side guides 32 are suspended from the base 11 via the rotation shafts 41 (FIG. 5). Therefore, the base portion 31 is not separated from the base 11 even when the base 11 is lifted upward to move the base 11 .

Here, the upper end 33J of the wall surface 33T of each base portion side guide 33 is the position of the rotation shaft 41 of each roller 42 when the base portion 31 hangs from the base 11 via the four connecting members 34. It is positioned higher than the height (Fig. 5). Therefore, as described above, even when the base 11 is lifted up by a crane or the like in the factory, the rollers 42 of the base-side guide 32 are kept in contact with the wall surface 33T of the base-side guide 33. maintain. Therefore, when the base 11 is lowered to the floor FL, the positional relationship between the two base-side guides 32 and the two base-side guides 33 is restored to its original state.

Next, the action of the vibration isolator 22 will be described. Vibration isolator 22 according to Embodiment 1 is configured such that two base-side guides 32 constituting vibration isolator 22 face each other in a lateral direction (arrow S shown in FIG. 3; referred to as "predetermined lateral direction"). Demonstrates anti-vibration function against vibration. That is, since the two base-side guides 32 are sandwiched between the two base-side guides 33 via the two rollers 42, when the base 11 vibrates in the predetermined lateral direction, two Relative movement of the two base-side guides 32 with respect to the base portion 31 (that is, with respect to the floor FL) in a predetermined lateral direction is restricted, and vibration of the base 11 with respect to the floor surface FL in a predetermined lateral direction is suppressed. A predetermined lateral vibration generated in the base 11 at this time is transmitted to the floor surface FL through the base-side guide 32 and the base-side guide 33. Since it is difficult to vibrate in the direction parallel to FL), the base 11 is held without vibrating laterally.

On the other hand, when the base 11 vibrates in the vertical direction, the rollers 42 of the two base-side guides 32 roll vertically on the wall surfaces 33T of the two base-side guides 33, thereby , the base 11 moves vertically relative to the base portion 31 . Therefore, vertical vibrations generated in the base 11 are not transmitted to the floor FL through the base-side guides 32 and the base-side guides 33. ) to the floor FL. Therefore, by setting the vibration-proof rubber 21G to have a high vibration-absorbing ability, the vibration in the vertical direction transmitted from the base 11 to the floor surface FL can be greatly reduced.

As described above, the vibration isolator 22 of the work machine 1 according to Embodiment 1 includes the base part 31 installed between the leg part 21 of the base 11 of the work machine 1 and the floor surface FL, and the base 11. A base-side guide 32 protrudes from the base lower surface 11M, which is a surface facing the floor FL, and a base-side guide 33 protrudes upward from the base portion 31. . Then, the base-side guide 33 is in contact with the base-side guide 32 from the lateral direction, and restricts the relative movement of the base-side guide 32 to the base 31 in the lateral direction. Relative movement in the vertical direction with respect to the base portion 31 is permitted. More specifically, the base-side guide 32 and the base-side guide 33 are wall surfaces on which rollers 42, which are rolling members provided in the base-side guide 32, are provided so as to extend in the vertical direction to the base-side guide 33. 33T, so that the base-side guide 33 restricts the relative movement of the base-side guide 32 in the lateral direction with respect to the base 31, and the base of the base-side guide 32 rotates. Relative movement in the vertical direction with respect to the portion 31 is permitted.

As described above, one anti-vibration device 22 suppresses only vibrations in the directions in which the two base-side guides 32 provided in the anti-vibration device 22 face each other. For this reason, the direction of vibration suppressed by the vibration isolator 22 attached to each of the plurality of legs 21 is set to the X-axis direction for some of the vibration isolator 22 and the Y direction for some other vibration isolator 22 . Vibration in all lateral directions occurring in the working machine 1 can be suppressed by setting it to the axial direction.

(Embodiment 2)
FIG. 6 shows a vibration isolator 122 for a working machine according to Embodiment 2 of the present invention. The configuration of the work machine is the same as that of work machine 1 of Embodiment 1 except for vibration isolator 122 .

6, the vibration isolator 122 includes a base portion 131, two base-side guides 132, one base-side guide 133, and two connecting members . The structure of the base portion 131 in the second embodiment is the same as that of the base portion 31 in the first embodiment, and the structures of the base portion side guide 133 and the connecting member 134 in the second embodiment are the same as those of the base portion side in the first embodiment. It is substantially the same as guide 33 and connecting member 134 .

In FIG. 6, the two base-side guides 132 in the second embodiment are arranged at positions sandwiching the base-side guide 133 . The base-side guide 133 has two wall surfaces 133T that are parallel to each other, and rollers 142 of the two base-side guides 132 are in lateral contact with these two wall surfaces 133T. . The two connecting members 134 are arranged at positions sandwiching the rotation shaft 141 of the roller 142 provided by one of the two base-side guides 132 in the direction in which the rotation axis extends.

In the second embodiment as well, the vibration isolator 122 is designed to prevent vibration in the direction in which the two base-side guides 132 constituting the vibration isolator 122 face each other (predetermined lateral direction; arrow S shown in FIG. 6). to provide anti-vibration function. That is, since the two base-side guides 132 sandwich one base-side guide 133 via two rollers 142, when the base 11 is vibrated in the predetermined lateral direction, two Movement of the base-side guide 132 in a predetermined lateral direction with respect to the base portion 131 (that is, with respect to the floor FL) is restricted, and vibration of the base 11 in a predetermined lateral direction with respect to the floor FL is suppressed. At this time, the predetermined lateral vibration generated in the base 11 is transmitted to the floor FL through the base-side guide 132 and the base-side guide 133. As described above, the floor FL is structurally Since it is difficult to vibrate in the lateral direction (direction parallel to the floor surface FL), the base 11 is held without vibrating laterally.

On the other hand, when the base 11 vibrates in the vertical direction, the rollers 142 of the two base-side guides 132 roll vertically on the two wall surfaces 133T of the base-side guide 133. As a result, the base 11 moves vertically relative to the base portion 131 . Therefore, vertical vibrations generated in the base 11 are not transmitted to the floor FL through the base-side guides 32 and the base-side guides 133, and are transmitted through the legs 21 (anti-vibration rubbers 21G) of the base 11 to the floor surface FL. transmitted to the surface FL. Therefore, as in the case of the first embodiment, the vibration in the vertical direction transmitted from the base 11 to the floor FL can be greatly reduced by making the rubber vibration isolator 21G relatively soft.

As described above, the vibration isolator 122 for the work implement 1 according to the second embodiment is similar to the vibration isolator 22 for the work implement 1 according to the first embodiment. A configuration comprising a base portion 131 installed between, a base side guide 132 provided to protrude from the base lower surface 11M, and a base portion side guide 133 provided to protrude upward from the base portion 131 It's becoming The base-side guide 133 is in contact with the base-side guide 132 from the lateral direction, and restricts the lateral relative movement of the base-side guide 132 with respect to the base 131 . Relative movement in the vertical direction with respect to the base portion 131 is permitted. More specifically, the base-side guide 132 and the base-side guide 133 are wall surfaces on which rollers 142, which are rolling members provided in the base-side guide 132, are provided so as to extend in the vertical direction to the base-side guide 133. 133T, so that the base-side guide 133 restricts the lateral movement of the base-side guide 132 relative to the base portion 131 while allowing the base-side guide 132 to move toward the base. Relative movement in the vertical direction with respect to the portion 131 is permitted.

In the vibration isolator 122 in the second embodiment, as in the case of the vibration isolator 22 in the first embodiment, one vibration isolator 122 has two base-side guides 132 facing each other. Suppresses only the vibration in the direction of For this reason, the direction of vibration suppressed by the vibration isolator 122 attached to each of the plurality of legs 21 is set to the X-axis direction for some of the vibration isolator 122 and the Y direction for some other vibration isolator 122 . Vibration in all lateral directions occurring in the working machine 1 can be suppressed by setting it to the axial direction.

(Embodiment 3)
7 and 8 show a vibration isolator 222 for a working machine according to Embodiment 3 of the present invention. The configuration of the work machine is the same as that of the work machine 1 of Embodiment 1 except for the anti-vibration device 222 .

7 and 8, the vibration isolator 222 includes a base portion 231, one base-side guide 232, a base-side guide 233, and two connecting members 234. As shown in FIG. The configuration of the base portion 231 in the third embodiment is the same as that in the first embodiment. The base-side guide 232 is provided on the base lower surface 11</b>M, and the base-side guide 233 is provided on the upper surface of the base portion 231 . The base-side guide 232 consists of a columnar or cylindrical member extending downward and has a cylindrical outer surface 232M. The base portion side guide 233 extends upward and has a tubular portion 233S having a cylindrical inner surface 233M therein. The base-side guide 232 is fitted into the base-side guide 233 (cylindrical portion 233S) from above. ) It can be moved relatively up and down while being slid on the cylindrical inner surface 233M.

7 and 8, two connecting members 234 are attached to the base lower surface 11M. The two connecting members 234 are positioned to sandwich the base portion side guide 233, and each have a long hole 235 extending in the vertical direction. Two projections 233B projecting laterally from the side surface of the base portion side guide 233 are inserted into the two elongated holes 235. As shown in FIG. Therefore, the base portion 231 is connected to the base 11 via the two connecting members 234 and the base portion side guide 233 .

In the vibration isolator 222 of Embodiment 3, the cylindrical outer surface 232M of the base-side guide 232 is in contact with the cylindrical inner surface 233M of the base-side guide 233, and the base-side guide 232 with respect to the base 231 is in contact with the cylindrical inner surface 233M. Relative movement in the lateral direction (that is, with respect to the floor FL) is restricted. Therefore, all lateral vibrations generated in the base 11 are suppressed. At this time, the lateral vibration generated in the base 11 is transmitted to the floor surface FL through the base-side guide 232 and the base-side guide 233. ), the lateral vibration of the floor surface FL is small.

On the other hand, when the base 11 vibrates in the vertical direction, the base-side guide 232 slides its cylindrical outer surface 232M against the cylindrical inner surface 233M of the base-side guide 233, thereby , the base 11 moves vertically relative to the base portion 231 . Therefore, the vertical vibration generated in the base 11 is not transmitted to the floor FL through the base-side guides 232 and the base-side guides 233, and is transmitted through the legs 21 (anti-vibration rubbers 21G) of the base 11 to the floor surface FL. transmitted to the surface FL. Therefore, as in the case of the first and second embodiments, the vibration in the vertical direction transmitted from the base 11 to the floor FL can be greatly reduced by making the rubber vibration isolator 21G relatively soft. be able to.

As described above, the vibration isolator 222 for the work machine 1 according to Embodiment 3 includes the base part 231 installed between the leg part 21 of the base 11 of the work machine 1 and the floor surface FL, and the base lower surface 11M. and a base-side guide 233 provided to project upward from the base portion 231 . Then, the base-side guide 233 is in contact with the base-side guide 232 from the lateral direction, and restricts the relative movement of the base-side guide 232 in the lateral direction with respect to the base 231 . Relative movement in the vertical direction with respect to the base portion 231 is permitted. More specifically, the base-side guide 232 and the base-side guide 233 have sliding contact surfaces extending in the vertical direction (an outer surface 232M of the base-side guide 232 and an inner surface 233M of the base-side guide 233). are in slidable contact with each other, whereby the base-side guide 233 restricts the lateral relative movement of the base-side guide 232 with respect to the base portion 231 while allowing the base-side guide 232 to move toward the base portion 231 . Relative movement in the vertical direction with respect to is allowed.

As described above, the vibration isolator 222 described in Embodiment 3 can suppress vibrations in all directions (lateral directions) in the horizontal plane that occur in the base 11 of the working machine 1. By providing each of the plurality of legs 21 of the base 11 with the vibration isolator 222, the vibration isolating effect of the base 11 can be further enhanced.

As described above, in work machine 1 according to Embodiment 1, vibration isolator 22, 122, and 222 are all installed between leg 21 of base 11 of work machine 1 and floor surface FL. Base portions 31, 131, and 231, base side guides 32, 132, and 232 provided to protrude downward from a base lower surface 11M, which is a surface facing the floor surface FL of the base 11, and the base portion 31 , 131, 231 and base portion side guides 33, 133, 233 provided to protrude upward. Then, the base-side guides 33, 133, 233 contact the base-side guides 32, 132, 232 from the lateral direction, and the base-side guides 32, 132, 232 move laterally with respect to the bases 31, 131, 231. It is configured to allow the relative movement of the base side guides 32, 132, 232 with respect to the base portions 31, 131, 231 in the vertical direction while restricting the relative movement in the direction.

Thus, in Embodiments 1, 2, and 3, the base side guides 33, 133, and 233 contact the base side guides 32, 132, and 232 from the lateral direction to By restricting the relative movement of the guides 32, 132, 232 in the lateral direction with respect to the base portions 31, 131, 231, lateral vibrations generated in the base 11 can be reduced. At this time, the lateral vibration of the base 11 is transmitted to the floor surface FL side, but since the floor surface FL is generally less likely to vibrate in the lateral direction (the in-plane direction of the floor surface FL), the floor surface FL does not move laterally. Directional vibrations have little effect on the operator. The vertical vibrations generated in the work machine 1 are transmitted to the floor FL through the legs 21. By making the anti-vibration rubber provided on the lower surfaces of the legs 21 relatively soft, the vibrations of the floor can be suppressed. Vertical vibration on the FL side can be suppressed. Therefore, according to the working machine 1 (vibration isolator 22, 122, 222 of the working machine 1) in the first, second and third embodiments, the vibration generated in the working machine 1 and the Therefore, it is possible to simultaneously reduce both the vibration generated on the floor surface FL.

Although the embodiments of the present invention have been described so far, the present invention is not limited to those described above, and various modifications and the like are possible. For example, in Embodiments 1 and 2 described above, the base-side guides 32, 132 are configured to bring the rollers 42, 142 into contact with the wall surfaces 33T, 133T of the base-side guides 33, 133. , the rollers 42 and 142 may be rolling members, such as ball members. Moreover, although the rolling members (rollers 42 and 142) are provided on the base side guides 32 and 132, they may be provided on the base side guides 33 and 133, respectively. In this case, the base-side guides 32 and 132 are formed with wall surfaces against which the rolling members abut. In other words, the base-side guides 32, 132 and the base-side guides 33, 133 are in rolling contact with a wall surface provided on the other side so that the rolling member provided on the other side extends in the vertical direction. As a result, the base-side guides 32, 132 are restricted from moving laterally relative to the bases 31, 131, and are allowed to move vertically relative to the bases 31, 131. Just do it.

In the third embodiment, the base-side guide 232 is made of a cylindrical or columnar member extending downward, and the base-side guide 233 is made of a member having a cylindrical inner surface and extending upward. , the base-side guide 232 is fitted into the base-side guide 233 from above, but these may be reversed. That is, the base side guide 233 is made of a cylindrical or columnar member extending upward, and the base side guide 232 is made of a member having a cylindrical inner surface and extending downward. may be fitted into the base-side guide 232 from below.

Further, in Embodiments 1, 2, and 3 described above, the base portion is connected to the base-side guide by a connecting member, which is a connecting portion, so as to be relatively movable in the vertical direction. However, the connecting portion may not be provided, and the base portion may be separable from the base-side guide. In this case, when the base is installed on the floor, the plurality of bases are first installed on the floor according to the arrangement of the legs of the base, and then the legs step on the bases. Place the base on the floor as shown. In addition, the vibration isolator does not necessarily have to be provided on all of the plurality of legs provided on the base. It may be provided only in

A vibration isolator for a work machine capable of simultaneously reducing both vibration generated in the work machine and vibration generated on a floor surface due to the vibration, and a work machine equipped with the vibration damper.

REFERENCE SIGNS LIST 1 working machine 11 base 11M lower surface of base 16 mounting head (working unit)
21 leg 21G anti-vibration rubber (elastic member)
22, 122, 222 vibration isolator 31, 131, 231 base portion 32, 132, 232 base side guide 232M outer surface (sliding contact surface)
33, 133, 233 Base portion side guide 34, 134, 234 Connecting member (connecting portion)
233M inner surface (sliding contact surface)
33T, 133T Wall surface 42, 142 Roller (rolling member)
Floor surface

Claims (4)

A vibration isolator for a working machine in which a base having a working part is supported on a floor surface by legs,
a base portion installed between the leg portion and the floor surface;
a base-side guide projecting downward from the lower surface of the base facing the floor surface of the base;
The base-side guide is provided to project upward from the base portion, and restricts the relative movement of the base-side guide in the lateral direction with respect to the base portion while being in contact with the base-side guide in the lateral direction. a base portion side guide that allows relative movement in the vertical direction with respect to the base portion ;
a connecting portion that connects the base portion to the base-side guide so as to be relatively movable in the vertical direction ;
A roller provided on one of the base-side guide and the base-side guide is in rolling contact with a wall surface provided on the other so as to extend in the vertical direction. is adapted to allow relative movement of the base-side guide in the vertical direction with respect to the base portion while restricting the relative movement of the base-side guide in the lateral direction with respect to the base portion,
A vibration isolator for a working machine , wherein a rotation shaft of the roller is inserted through a long hole provided in the connecting portion and extending in the vertical direction. 2. A vibration isolator for a work machine according to claim 1 , wherein said leg portion contacts said base portion via an elastic member. A working machine in which a base having a working part is supported on a floor surface by legs,
a base portion installed between the leg portion and the floor surface;
a base-side guide projecting downward from the lower surface of the base facing the floor surface of the base;
The base-side guide is provided to project upward from the base portion, and restricts the relative movement of the base-side guide in the lateral direction with respect to the base portion while being in contact with the base-side guide in the lateral direction. a base portion side guide that allows relative movement in the vertical direction with respect to the base portion;
a connecting portion that connects the base portion to the base-side guide so as to be relatively movable in the vertical direction ;
A roller provided on one of the base-side guide and the base-side guide is in rolling contact with a wall surface provided on the other so as to extend in the vertical direction. is adapted to allow relative movement of the base-side guide in the vertical direction with respect to the base portion while restricting the relative movement of the base-side guide in the lateral direction with respect to the base portion,
A working machine , wherein a rotation shaft of the roller is inserted through a long hole provided in the connecting portion so as to extend in the vertical direction. The working machine according to claim 3 , wherein the leg contacts the base via an elastic member.

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