JP5770774B2 - Heavy load support device - Google Patents

Description

  The present invention relates to a heavy-weight support device that movably supports a support that is a heavy load, and more specifically, supplies oil between the support and the support on which the support is disposed. Thus, the present invention relates to a heavy-weight support device that supports a supported body.

  Conventionally, when positioning heavy objects or processing heavy objects with a machine tool, positioning of heavy objects may be performed.

  As shown in FIG. 23, the heavy load support device includes a support 81 having a mounting surface 80 on which a heavy load (hereinafter referred to as a support T) is mounted, and a mounting surface of the support 81. An oil supply structure comprising a recess 82 formed on 80, an oil supply device 84 for supplying oil in the oil tank 83 to the recess 82, and a hydraulic pressure for controlling the pressure applied to the supported body T of the oil O in the recess 82 Some have a control valve 85.

  Further, when this type of heavy load support device 8 supports the supported body T on the mounting surface 80, all of the oil O overflowing from the recess 82 (on the mounting surface 80 of the support 81) is removed. A recovery unit 86 that recovers in the tank 83 is provided, and the oil O recovered by the recovery unit 86 is supplied to the recess 82 again. Therefore, in the heavy load support device 8, the support 81 is movably supported on the mounting surface 80 by circulating the oil O while filling the recess 82 and the recovery portion 86.

  However, in the heavy load support device 8, the oil O overflowing from the concave portion 82 spills out of the placement surface 80 from the entire outer periphery of the support 81 after reaching the entire placement surface 80 of the support 81. . Therefore, in the heavy load support device 8, it is necessary to recover the oil O that overflows from the entire outer periphery of the support 81 to the outside of the placement surface 80, and thus the recovery unit 86 becomes large.

  For this reason, in the heavy load support device 8, since it is necessary to fill the recess 82 and the large collection portion 86 with the oil O, a large amount of oil is required to support the supported body T on the mounting surface 80. O is required.

  In order to solve such a problem, as shown in FIG. 24, a support body 91 having a mounting surface 90 on which the supported body T is mounted and a mounting surface 90 of the support body 91 are provided. An annular sealing member 92 and a concave portion 94 which is located in a region surrounded by the sealing member 92 on the mounting surface 90 and is connected to an oil supply hole 93 for supplying oil O onto the mounting surface 90. There is provided a heavy load support device 9 including an oil supply structure and an oil supply device 96 that supplies oil in an oil tank 95 to a region surrounded by a seal member 92 (see, for example, Patent Document 1).

  In addition, this type of heavy load support device 9 has a valve mechanism 97 that stops the supply of oil O when a predetermined amount of oil O is supplied to the recess 94, and supplies the oil O to the recess 94 by the valve mechanism 97. A pressure relief valve 98 for releasing the stopped state is further provided.

  More specifically, the valve mechanism 97 is formed in the oil supply hole 93 and has a taper portion 970 that has a hole diameter that decreases toward the placement surface 90 and is inserted into the oil supply hole 90 and the placement surface 90. A valve body 971 biased toward the side, the valve body 971 is a contact portion 972 that can contact the taper portion 970, and an extension portion 973 extending from the corresponding contact portion 972, A part is provided with an extending portion 973 that is positioned closer to the supported body T than the placement surface 90.

  The pressure relief valve 98 collects the oil O supplied to the region between the oil supply device 96 and the oil supply hole 90 in the oil tank 95.

  Therefore, in this type of heavy load support device 9, when the supported body T is disposed on the placement surface 90, the contact portion 972 is moved as the extended portion 973 of the valve body 971 is pushed by the supported body T. It leaves | separates from the taper part 970. Then, oil O is supplied to the static pressure pocket P, which is a sealed space defined by the supported body T and the seal member 92, on the placement surface 90, and the supported body T is placed on the placement surface by a predetermined amount. When separated from 90 (that is, when a predetermined amount of oil O is supplied to the static pressure pocket P), the contact portion 972 of the valve body comes into contact with the tapered portion 970 and the supply of the oil O stops.

  Furthermore, when the oil O supplied between the oil supply device 96 and the oil supply hole 90 is recovered in the oil tank 95 by the pressure relief valve 98, the pressure in the static pressure pocket P is reduced and the extension portion of the valve body 971 is extended. As 973 is pushed by the supported body T, the contact portion 972 is separated from the tapered portion 970, the oil O in the static pressure pocket P is collected in the oil tank 95, and the supported body T is placed on the mounting surface. Supported in close contact.

  Therefore, this type of heavy-weight support device 9 does not continuously supply the oil O to the static pressure pocket P when supporting the support T, but the pressure at which the oil O acts on the support T. Can be kept. Therefore, unlike the heavy load support device 8, the heavy load support device 9 can support the supported body T without requiring a large amount of oil O.

Japanese Patent Application No. 2005-517595

  However, in the above-described heavy load support device 9, since a predetermined amount of oil O is supplied into the static pressure pocket P and then the supply of the oil O is stopped, the interval between the mounting surface 90 and the supported body T is increased. There is a problem that it cannot be adjusted.

  Therefore, in view of such a situation, the present invention makes it possible to adjust the oil pressure according to the weight of the supported body while suppressing the oil consumption, and further, the interval between the mounting surface 90 and the supported body T is set. It is an object of the present invention to provide a reduced weight support device.

A heavy load support device according to the present invention includes a support surface having a mounting surface on which a supported body is disposed, an annular disposition groove formed on the placement surface, and an annular seal member disposed in the disposition groove. A sealing member that can be in close contact with the support body disposed on the mounting surface, an oil supply structure that supplies oil to a region surrounded by the sealing member on the mounting surface, and An oil recovery structure for recovering oil from a region surrounded by the seal member, and a pressure that causes the oil supplied to the region surrounded by the seal member on the mounting surface to act on a supported body in close contact with the seal member A hydraulic control valve that adjusts the pressure or flow rate of the oil supplied to the region surrounded by the seal member to be adjusted, and the mounting surface is a pressure holding surface provided in the region surrounded by the seal member , enclosed taken to seal member Which has a逃面provided around the outer periphery of the pressure holding surface in a region that is, an outer surface the seal member has can be placed face to the supported body, the pressure holding surface Is disposed on the same plane as the outer surface of the sealing surface on the mounting surface, or between the outer surface of the mounting surface on the mounting surface and the relief surface, and the oil supply structure supplying oil to the逃面in the region that is surrounded by members, said oil recovery structure, have a recovery hole opening on the pressure holding surface, the supplied oil, around the outer periphery of the pressure retaining surface From the pressure holding surface and the supported body to the recovery hole .

  According to the heavy-weight support device having the above-described configuration, when the seal member is brought into pressure contact with the supported body placed on the placement surface, the space sealed by the supported body, the support body, and the seal member (hereinafter referred to as static). Pressure pockets) are defined on the mounting surface. And by supplying oil in a static pressure pocket with an oil supply structure, a to-be-supported body can be supported on a mounting surface so that it can be moved by slight force.

  At this time, when the external force acting on the supported body on the placement surface (external force acting on the placement surface side) increases, the distance between the supported surface and the placement surface decreases, and the oil in the static pressure pocket decreases. The pressure acting on the supported body increases. On the other hand, when the external force acting on the supported body on the placement surface is reduced, the distance between the supported body and the placement surface is increased, and the pressure acting on the supported body of oil in the static pressure pocket is reduced. Become. Therefore, even if the external force acting on the supported body changes, the supported body can be supported with an appropriate force.

Further, since the recovery hole that opens to the outside of the mounting surface is formed in a region surrounded by the seal member on the mounting surface, oil can be recovered in the static pressure pocket. Therefore, by adjusting the amount of oil flowing in the static pressure pocket, the pressure acting on the supported body can be adjusted, and the oil supplied to the static pressure pocket can be recovered without flowing out. it can.
Furthermore, the heavy load support device makes the interval between the pressure holding surface and the supported body arranged on the mounting surface smaller than the interval between the relief surface and the supported body arranged on the mounting surface. Can do. Therefore, the pressure acting on the supported body of oil in the region corresponding to the relief surface in the static pressure pocket can be kept constant.

  Here, as one aspect of the weight support device according to the present invention, a pressure holding mechanism for adjusting the amount of oil recovered from the oil recovery structure is provided, and the pressure holding mechanism is a tapered surface formed in the recovery hole, A taper surface formed so that the hole diameter increases toward the placement surface side, and an insertion member that is inserted into the recovery hole and biased toward the placement surface side. The member may include a pressed portion that is positioned on the placement surface and a facing portion that faces the tapered surface with a space therebetween.

  According to this configuration, when the seal member is brought into pressure contact with the supported body placed on the placement surface, the static pressure pocket is defined on the placement surface by the supported body, the support body, and the seal member. Therefore, by supplying oil into the static pressure pocket through the oil supply passage of the oil supply structure, the supported body can be supported on the mounting surface so that it can be moved with a slight force.

  At this time, the insertion member is pushed into the recovery hole when the pushed portion is pushed by the supported body. Along with this, the gap between the tapered surface and the facing portion becomes narrower. Therefore, it is possible to keep the pressure acting on the oil supported body in the region from the arrangement groove in the static pressure pocket to the pressure holding mechanism constant.

  Further, since the recovery hole that opens to the outside of the mounting surface is formed in a region surrounded by the seal member on the mounting surface, oil can be recovered in the static pressure pocket. Therefore, the pressure applied to the supported body can be adjusted by adjusting the pressure or flow rate of the oil supplied into the static pressure pocket, and the oil supplied to the static pressure pocket can be recovered without flowing out. You can also

  As another aspect of the heavy-weight support apparatus according to the present invention, the oil supply structure may have an annular oil supply groove surrounding the recovery hole.

  In this way, the pressure acting on the supported body of oil in the region from the arrangement groove in the static pressure pocket to the oil supply groove is kept constant, and the supported body is moved with a slight force. And can be supported on the mounting surface.

  As described above, the heavy-weight support apparatus according to the present invention can achieve an excellent effect that the pressure of oil can be adjusted according to the supported body while suppressing the consumption of oil.

FIG. 1 is a schematic configuration diagram of a heavy load support device according to a first embodiment of the present invention. FIG. 2 is a perspective view of a support of the heavy load support device according to the embodiment. FIG. 3 is a longitudinal sectional view of a support of the heavy load support device according to the embodiment. 4 is an enlarged view of the support body of the heavy-weight support apparatus according to the embodiment, and FIG. 4A is an enlarged view of a region X1 in FIG. 3 in a state before the support body is arranged on the placement surface. FIG. 4B is an enlarged view of the region X1 in FIG. 3 in a state where the supported body is disposed on the mounting surface and oil is supplied into the static pressure pocket. FIG. 5 is an explanatory diagram of the heavy load support device according to the embodiment, and is an explanatory diagram of a state in which oil is supplied into the static pressure pocket. FIG. 6 is an enlarged view of the heavy load support device according to the embodiment, and is an enlarged view of a region X2 in FIG. 5 in a state where oil is supplied into the static pressure pocket. FIG. 7 is a schematic configuration diagram of a heavy load support device according to the second embodiment of the present invention. FIG. 8 is a perspective view of a support of the heavy-weight support device according to the embodiment. FIG. 9 is a longitudinal sectional view of a support of the heavy load support device according to the embodiment. FIG. 10 is an explanatory diagram of the heavy load support device according to the embodiment, and is an explanatory diagram of a state in which oil is supplied into the static pressure pocket. FIG. 11 is an enlarged view of the heavy load support device according to the embodiment, and is an enlarged view of a region X3 in FIG. 10 in a state where oil is supplied into the static pressure pocket. FIG. 12 is a perspective view of the support of the heavy load support device according to the third embodiment of the present invention. FIG. 13: is a longitudinal cross-sectional view of the support body of the heavy-weight support apparatus which concerns on the same embodiment. FIG. 14 is an explanatory diagram of the heavy load support device according to the embodiment, and is an explanatory diagram of a state in which oil is supplied into the static pressure pocket. FIG. 15 is an enlarged view of the heavy load support device according to the embodiment, and is an enlarged view of a region X4 in FIG. 14 in a state where oil is supplied into the static pressure pocket. FIG. 16 is a perspective view of a support of the heavy-weight support apparatus according to the fourth embodiment of the present invention. FIG. 17 is a longitudinal sectional view of a support of the heavy load support device according to the embodiment. FIG. 18 is an explanatory diagram of the heavy load support device according to the embodiment, and is an explanatory diagram of a state in which oil is supplied into the static pressure pocket. FIG. 19 is an enlarged view of the heavy load support device according to the embodiment, and FIG. 19A is an enlarged view of a region X5 in FIG. 18 in a state before the support is disposed on the placement surface. FIG. 19B is an enlarged view of a region X5 in FIG. 18 in a state where the support is disposed on the placement surface and oil is supplied into the static pressure pocket. FIG. 20 is an explanatory diagram of a seal member of a heavy load support device according to another embodiment of the present invention, and FIG. 20A is an explanatory diagram of the seal member in a state before the support is disposed on the placement surface. FIG. 20B is an explanatory diagram of the seal member in a state after the support is disposed on the placement surface. FIG. 21 is an explanatory diagram of a seal member of a heavy load support device according to another embodiment of the present invention, and FIG. 21A is an explanatory diagram of the seal member in a state before the support is disposed on the placement surface. FIG. 21B is an explanatory diagram of the seal member in a state after the support is disposed on the placement surface. FIG. 22 is a perspective view of a support of a heavy load support device according to still another embodiment of the present invention. FIG. 23 is a schematic configuration diagram of a conventional heavy-weight support apparatus. FIG. 24 is a schematic configuration diagram of another conventional heavy-weight support apparatus.

  Hereinafter, a heavy load support device according to a first embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the heavy load support device according to the present embodiment includes a placement surface 20 on which the supported body T is placed and an annular placement groove 21 formed on the placement surface 20. A support member 2, an annular seal member 3 disposed in the disposition groove 21, the seal member 3 capable of being in pressure contact with the supported body T placed on the placement surface 20; An oil supply structure 4 for supplying oil O to a region surrounded by the seal member 3 in the above, an oil recovery structure 5 for recovering the oil O from a region surrounded by the seal member 3 in the mounting surface 20 described above, and mounting In the region surrounded by the seal member 3 in order to adjust the pressure acting on the supported body T disposed on the mounting surface 20 of the oil O supplied to the region surrounded by the seal member 3 on the surface 20. Hydraulic control valve 6 for adjusting the pressure or flow rate of the oil O to be supplied (see FIG. 1) ) And a.

  As shown in FIGS. 2 and 3, the support 2 is formed in a plate shape. And the support body 2 has side surface 22,22 ... in the direction orthogonal to own thickness direction. In addition, the mounting surface 20 of the support body 2 is a surface on which the supported body T is mounted and is not only a region surrounded by the seal member 3 but also a region surrounded by the seal member 3. It also includes outside parts.

  The seal member 3 is arranged in the arrangement groove 21 so that a part thereof protrudes from the placement surface 20. More specifically, the seal member 3 includes an annular seal member main body 30 and a ring member 31 disposed between the seal member main body 30 and the arrangement groove 21 as shown in FIG. 4A. The seal member main body 30 has elasticity.

  The ring member 31 is formed in an annular shape, and a recess corresponding to the outer diameter of the seal member main body 30 is formed on the inner peripheral side. Further, even if the ring member 31 is pressed against the supported body T, the ring member 31 does not come into contact with the bottom of the arrangement groove 21. More specifically, the ring member 31 has an extending portion 310 that extends inward in the circumferential direction. The extending part 310 is provided over the entire circumferential direction of the ring member 31.

  Therefore, as shown in FIG. 4B, when the supported body T is disposed on the mounting surface 20, the seal member 3 is pressed against the supported body T, but the ring member 31 abuts the placement groove 21, Further, the seal member main body 30 is in close contact with the inner peripheral side of the ring member 31. Therefore, the seal member 3 can prevent the seal member main body 30 from being damaged or coming out of the arrangement groove 21.

  In the heavy object support device 1, when the supported body T is disposed on the placement surface 20, a space (sealed by the support body 2 (placement surface 20), the supported body T, and the seal member 3 ( Hereinafter, a static pressure pocket P) is defined on the mounting surface 20.

  Returning to FIG. 3, the oil supply structure 4 includes an oil supply passage 40 formed in the support 2 and connected to a region surrounded by the seal member 3 on the mounting surface 20. In addition, the oil supply structure 4 according to the present embodiment includes an oil supply device 42 that supplies the oil O in the oil tank 41 through the oil supply passage 40 into a region surrounded by the seal member 3 on the mounting surface 20 ( (See FIG. 1). And in the oil supply structure 4 which concerns on this embodiment, the hydraulic control valve 6 is connected with the oil supply apparatus 42, and the pressure or flow volume of the oil O which passes the collection | recovery hole 50 mentioned later can be adjusted now.

  The oil supply path 40 is open in a region surrounded by the seal member 3 on the placement surface 20. The oil supply passage 40 is also open outside the side surface 22 of the support 2. And the oil supply apparatus 42 can be comprised with a hydraulic pump, for example.

  The oil recovery structure 5 has a recovery hole 50 that is formed in a region surrounded by the seal member 3 on the mounting surface 20 and opens to the outside of the mounting surface 20. The oil recovery structure 5 has a recovery path 51 connected to the recovery hole 50.

  The recovery path 51 is formed in the support 2, one opening is connected to the recovery hole 50, and the other opening is open on the side surface 22 of the support 2. The recovery path 51 is connected to the oil tank 41 of the oil supply structure 4. Therefore, the oil recovery structure 5 can recover the oil O supplied in the region surrounded by the seal member 3 on the mounting surface 20 in the oil tank 41.

  The hydraulic control valve 6 can adjust the pressure or flow rate of the oil O passing through the recovery hole 50. Therefore, the hydraulic control valve 6 can increase the pressure acting on the supported body T of the oil O in the static pressure pocket P by increasing the flow rate of the oil O that passes through the recovery hole 50, and passes through the recovery hole 50. By reducing the flow rate of the oil O, the pressure acting on the supported body T of the oil O in the static pressure pocket P can be reduced. The hydraulic control valve 6 can be configured by a throttle valve or the like.

  The heavy load support device 1 according to the present embodiment is as described above. Subsequently, the support of the support T by the heavy load support device 1 will be described with reference to the attached drawings.

  In order to support the supported body T by the heavy load support device 1, the supported body T is disposed on the mounting surface 20 of the support body 2 as shown in FIGS. 5 and 6. If it does in this way, the static pressure pocket P will be demarcated by the to-be-supported body T, the mounting surface 20 of the support body 2, and the sealing member 3 (refer FIG. 6).

  Then, the oil supply device 42 supplies the oil O into the static pressure pocket P through the oil supply groove 43 and the oil supply passage 40, and the oil O in the static pressure pocket P is supplied through the recovery hole 50 and the recovery passage 51. Collect in the tank 41. At this time, since the recovery of the oil O in the static pressure pocket P is performed in the region surrounded by the seal member 3 (that is, in the static pressure pocket P), the oil O in the static pressure pocket P flows out to the outside. It can collect | recover in the oil tank 41, without making it.

  When the supply amount of the oil O into the static pressure pocket P is increased, the pressure acting on the supported body T of the oil O in the static pressure pocket P increases. The pressure acting on the supported body T of the oil O in the static pressure pocket P decreases as it approaches the recovery hole 50 from the inside of the arrangement groove 21, and becomes zero in a region corresponding to the edge of the recovery hole 50.

  And if the pressure which acts on the to-be-supported body T of the oil O in the static pressure pocket P is fully raised, the to-be-supported body T will be supported on the mounting surface 20 in the state which can be moved by slight force. The At this time, when an external force (for example, an external force acting on the mounting surface 20 when performing centering or cutting of the supported body T) acts on the supported body T, the supporting body 2 is In addition to the load of T, an external force acting on the supported body T is also supported.

  More specifically, when the external force acting on the support T on the mounting surface 20 increases, the distance between the support T and the mounting surface 20 decreases, and the oil O in the static pressure pocket P decreases. The pressure acting on the support T is increased. On the other hand, when the external force acting on the supported body T on the mounting surface 20 is reduced, the distance between the supported body T and the mounting surface 20 is increased, and the supported body of the oil O in the static pressure pocket P is increased. The pressure acting on T is reduced. Thus, even if the external force acting on the supported body T changes, the supported body T can be supported with an appropriate force.

  Then, when the supply of the oil O into the static pressure pocket P is stopped, the supported body T is supported in close contact with the mounting surface 20.

  As described above, according to the heavy load support device 1 according to the present embodiment, the pressure applied to the supported body T is adjusted by adjusting the pressure or the amount of the oil O supplied into the static pressure pocket P. In addition, the oil O supplied to the static pressure pocket P can be recovered without flowing out. Accordingly, it is possible to achieve an excellent effect that the pressure of the oil O in the static pressure pocket P can be adjusted according to the supported body T while suppressing the consumption amount of the oil O.

  Further, the heavy load support device 1 according to this embodiment is different from the heavy load support device as shown in FIG. 24 (a heavy load support device that can supply only a predetermined amount of oil O into the static pressure pocket P). And the space | interval of the to-be-supported body T arrange | positioned on the mounting surface 20 and the mounting surface 20 can be made small. Therefore, in the heavy load support device 1, the positioning accuracy can be improved as compared with the heavy load support device as shown in FIG.

  Further, in the heavy load support device 1, since the movement amount of the support T (the movement amount in the direction of contact with and away from the mounting surface 20) can be suppressed, for example, when the support T is cut, It is also possible to suppress the vibration of the support T.

  The description of the heavy load support device 1 according to the first embodiment of the present invention is as described above. Subsequently, a heavy load support device 1 according to a second embodiment of the present invention will be described with reference to the accompanying drawings. In addition, about the same structure as the heavy-weight support apparatus 1 which concerns on 1st embodiment, or the structure which corresponds, you shall attach | subject and demonstrate the same code | symbol. Moreover, about the same structure or a corresponding structure, the description in 1st embodiment may be used.

  As shown in FIGS. 7 and 8, the heavy load support device 1 according to the present embodiment also includes a placement surface 20 on which the supported body T is placed and an annular placement groove 21 formed on the placement surface 20. A support member 2 having an annular seal member 3 disposed in the disposition groove 21, the seal member 3 being press-contactable with the support body T placed on the placement surface 20, and the placement surface described above 20, an oil supply structure 4 for supplying oil O to a region surrounded by the seal member 3, an oil recovery structure 5 for recovering oil O from a region surrounded by the seal member 3 on the mounting surface 20, The region surrounded by the seal member 3 to adjust the pressure acting on the supported body T arranged on the placement surface 20 of the oil O supplied to the region surrounded by the seal member 3 on the placement surface 20 And a hydraulic control valve 6 for adjusting the pressure or flow rate of the oil O supplied to the To have.

  The support body 2 has the mounting surface 20 as in the first embodiment. 8 and 9, the mounting surface 20 includes a pressure holding surface 200 provided around the recovery hole 50 and a relief surface 201 provided around the pressure holding surface 200. Furthermore, the pressure holding surface 200 is located on the supported body T side with respect to the relief surface 201. That is, in the support body 2, the relief surface 201 is cut away from the pressure holding surface 200.

  Therefore, when the support T is disposed on the mounting surface 20, the support 2 is configured such that the distance between the pressure holding surface 200 and the support T is the distance between the relief surface 201 and the support T. It is comprised so that it may become smaller.

  The seal member 3, the oil supply structure 4, the oil recovery structure 5, and the hydraulic control valve 6 have the same configuration as in the first embodiment.

  The heavy load support device 1 according to the present embodiment is as described above. Subsequently, the support of the support T by the heavy load support device 1 will be described with reference to the attached drawings.

  In order to support the to-be-supported body T with the heavy-weight support apparatus 1, it arrange | positions on the mounting surface 20 of the support body 2, as shown in FIG.10 and FIG.11. If it does in this way, the static pressure pocket P will be demarcated by the to-be-supported body T, the mounting surface 20 of the support body 2, and the sealing member 3 (refer FIG. 11).

  Then, the oil supply device 42 supplies the oil O into the static pressure pocket P through the oil supply groove 43 and the oil supply passage 40, and the oil O in the static pressure pocket P is supplied through the recovery hole 50 and the recovery passage 51. Collect in the tank 41. At this time, since the recovery of the oil O in the static pressure pocket P is performed in the region surrounded by the seal member 3 (that is, in the static pressure pocket P), the oil O in the static pressure pocket P flows out to the outside. It is possible to recover without causing it.

  Further, in the static pressure pocket P, the distance between the pressure holding surface 200 and the supported body T is smaller than the distance between the relief surface 201 and the supported body T. The pressure acting on the supported body of oil O in the region corresponding to the surface 201 can be kept constant. Note that the pressure of the oil O in the static pressure pocket P acting on the supported body T decreases from the inside of the relief surface 201 toward the recovery hole 50 and becomes zero in a region corresponding to the edge of the recovery hole 50.

  And if the pressure which acts on the to-be-supported body T of the oil O in the static pressure pocket P is fully raised, the to-be-supported body T will be supported on the mounting surface 20 in the state which can be moved by slight force. The At this time, when an external force (for example, an external force acting on the mounting surface 20 when performing centering or cutting of the supported body T) acts on the supported body T, the supporting body 2 is In addition to the load of T, an external force acting on the supported body T is also supported.

  More specifically, when the external force acting on the support T on the mounting surface 20 increases, the distance between the support T and the mounting surface 20 decreases, and the oil O in the static pressure pocket P decreases. The pressure acting on the support T is increased. On the other hand, when the external force acting on the supported body T on the mounting surface 20 is reduced, the distance between the supported body T and the mounting surface 20 is increased, and the supported body of the oil O in the static pressure pocket P is increased. The pressure acting on T is reduced. Thus, even if the external force acting on the supported body T changes, the supported body T can be supported with an appropriate force.

  Then, when the supply of the oil O into the static pressure pocket P is stopped, the supported body T is supported in close contact with the placement surface 20.

  As described above, according to the heavy load support device 1 according to the present embodiment, the pressure applied to the supported body T is adjusted by adjusting the pressure or the amount of the oil O supplied into the static pressure pocket P. In addition, the oil O supplied to the static pressure pocket P can be recovered without flowing out. Therefore, it is possible to achieve an excellent effect that the pressure of the oil O can be adjusted according to the support T while suppressing the consumption amount of the oil O.

  Further, since the distance between the pressure holding surface 200 and the supported body T can be made smaller than the distance between the relief surface 201 and the supported body T, a region corresponding to the relief surface 201 in the static pressure pocket P. The oil O can be supported on the mounting surface 20 so that the supported body T can be moved with a slight force while keeping the pressure applied to the supported body T constant.

  The heavy-weight support device 1 according to the present embodiment is compared with the heavy-weight support device (a heavy-weight support device that can supply only a predetermined amount of oil O in the static pressure pocket P) as shown in FIG. And the space | interval of the to-be-supported body T arrange | positioned on the mounting surface 20 and the mounting surface 20 can be made small. Therefore, in the heavy load support device 1, the positioning accuracy can be improved as compared with the heavy load support device as shown in FIG.

  Further, in the heavy load support device 1, since the movement amount of the support T (the movement amount in the direction of contact with and away from the mounting surface 20) can be suppressed, for example, when the support T is cut, It is also possible to suppress the vibration of the support T.

  The description of the heavy load support device 1 according to the second embodiment of the present invention is as described above. Next, a heavy load support device 1 according to a third embodiment of the present invention will be described with reference to the accompanying drawings. In addition, about the same structure as the heavy-weight support apparatus 1 which concerns on 1st embodiment, or the structure which corresponds, you shall attach | subject and demonstrate the same code | symbol. Moreover, about the same structure or a corresponding structure, the description in 1st embodiment may be used.

  As shown in FIGS. 12 and 13, the heavy load support device 1 according to the present embodiment also includes a placement surface 20 on which the supported body T is placed and an annular placement groove 21 formed on the placement surface 20. A support member 2 having an annular seal member 3 disposed in the disposition groove 21, the seal member 3 being press-contactable with the support body T placed on the placement surface 20, and the placement surface described above 20, an oil supply structure 4 for supplying oil O to a region surrounded by the seal member 3, an oil recovery structure 5 for recovering oil O from a region surrounded by the seal member 3 on the mounting surface 20, The region surrounded by the seal member 3 to adjust the pressure acting on the supported body T arranged on the placement surface 20 of the oil O supplied to the region surrounded by the seal member 3 on the placement surface 20 A hydraulic control valve 6 for adjusting the pressure or flow rate of the oil O supplied to the It is provided.

  The support body 2 and the seal member 3 have the same configuration as in the first embodiment.

  The oil supply structure 4 includes an oil supply path 40, an oil tank 41, and an oil supply device 42 as in the first embodiment. Further, the oil supply structure 4 further includes an annular oil supply groove 43 provided between the oil supply path 40 and the recovery hole 50, and a communication groove 44 connected to the oil supply path 40 and the oil supply groove 43.

  The oil recovery structure 5 and the hydraulic control valve 6 have the same configuration as in the first embodiment.

  The heavy load support device 1 according to the present embodiment is as described above. Subsequently, the support of the support T by the heavy load support device 1 will be described with reference to the attached drawings.

  In order to support the supported body T by the heavy load support device 1, the supported body T is disposed on the mounting surface 20 of the support body 2 as shown in FIGS. 14 and 15. In this way, the static pressure pocket P is defined by the support T, the mounting surface 20 of the support 2, and the seal member 3.

  Then, the oil supply device 42 supplies the oil O into the static pressure pocket P through the oil supply groove 43 and the oil supply passage 40, and the oil O in the static pressure pocket P is supplied through the recovery hole 50 and the recovery passage 51. Collect in the tank 41. At this time, since the recovery of the oil O in the static pressure pocket P is performed in the region surrounded by the seal member 3 (that is, in the static pressure pocket P), the oil O in the static pressure pocket P flows out to the outside. It is possible to recover without causing it.

  Furthermore, since the oil O supplied from the oil supply passage 40 is also supplied to the oil supply groove 43 through the communication groove 44, the oil O in the region from the arrangement groove 21 in the static pressure pocket P to the oil supply groove 43. The pressure acting on the supported body T can be kept constant. The pressure acting on the supported body T of the oil O in the static pressure pocket P decreases from the inside of the oil supply groove 43 toward the recovery hole 50 and becomes zero in the region corresponding to the edge of the recovery hole 50.

  And if the pressure which acts on the to-be-supported body T of the oil O in the static pressure pocket P is fully raised, the to-be-supported body T will be supported on the mounting surface 20 in the state which can be moved by slight force. The At this time, when an external force (for example, an external force acting on the mounting surface 20 when performing centering or cutting of the supported body T) acts on the supported body T, the supporting body 2 is In addition to the load of T, an external force acting on the supported body T is also supported.

  More specifically, when the external force acting on the support T on the mounting surface 20 increases, the distance between the support T and the mounting surface 20 decreases, and the oil O in the static pressure pocket P decreases. The pressure acting on the support T is increased. On the other hand, when the external force acting on the supported body T on the mounting surface 20 is reduced, the distance between the supported body T and the mounting surface 20 is increased, and the supported body of the oil O in the static pressure pocket P is increased. The pressure acting on T is reduced. Thus, even if the external force acting on the supported body T changes, the supported body T can be supported with an appropriate force.

  Then, when the supply of the oil O into the static pressure pocket P is stopped, the supported body T is supported in close contact with the placement surface 20.

  As described above, according to the heavy load support device 1 according to the present embodiment, the pressure applied to the supported body T is adjusted by adjusting the pressure or the amount of the oil O supplied into the static pressure pocket P. In addition, the oil O supplied to the static pressure pocket P can be recovered without flowing out. Therefore, it is possible to achieve an excellent effect that the pressure of the oil O can be adjusted according to the support T while suppressing the consumption amount of the oil O.

  Further, since the oil supply structure 4 has the oil supply groove 43, the pressure acting on the supported body T of the oil O in the region from the arrangement groove 21 to the oil supply groove 43 in the static pressure pocket P is kept constant. Thus, the supported body T can be supported on the mounting surface 20 so that it can be moved with a slight force.

  The heavy-weight support device 1 according to the present embodiment is compared with the heavy-weight support device (a heavy-weight support device that can supply only a predetermined amount of oil O in the static pressure pocket P) as shown in FIG. And the space | interval of the to-be-supported body T arrange | positioned on the mounting surface 20 and the mounting surface 20 can be made small. Therefore, in the heavy load support device 1, the positioning accuracy can be improved as compared with the heavy load support device as shown in FIG.

  Further, in the heavy load support device 1, since the movement amount of the support T (the movement amount in the direction of contact with and away from the mounting surface 20) can be suppressed, for example, when the support T is cut, It is also possible to suppress the vibration of the support T.

  The heavy load support device 1 according to the third embodiment of the present invention has been described above. Subsequently, a heavy load support device 1 according to a fourth embodiment of the present invention will be described with reference to the accompanying drawings. In addition, about the same structure as the heavy-weight support apparatus 1 which concerns on 1st embodiment, or the structure which corresponds, you shall attach | subject and demonstrate the same code | symbol. Moreover, about the same structure or a corresponding structure, the description in 1st embodiment may be used.

  As shown in FIGS. 16 and 17, the heavy load support device 1 according to the present embodiment also includes a placement surface 20 on which the supported body T is placed and an annular placement groove 21 formed on the placement surface 20. A support member 2 having an annular seal member 3 disposed in the disposition groove 21, the seal member 3 being press-contactable with the support body T placed on the placement surface 20, and the placement surface described above 20, an oil supply structure 4 for supplying oil O to a region surrounded by the seal member 3, an oil recovery structure 5 for recovering oil O from a region surrounded by the seal member 3 on the mounting surface 20, The region surrounded by the seal member 3 to adjust the pressure acting on the supported body T arranged on the placement surface 20 of the oil O supplied to the region surrounded by the seal member 3 on the placement surface 20 A hydraulic control valve 6 for adjusting the pressure or flow rate of the oil O supplied to the It is provided. Furthermore, the heavy load support device 1 according to this embodiment includes a pressure holding mechanism 7 that adjusts the amount of oil O recovered from the oil recovery structure 5.

  The support 2 and the seal member 3 are the same as those in the first embodiment.

  The oil supply structure 4 includes an oil supply passage 40, an oil tank 41, and an oil supply device 42. The oil supply structure 4 further includes a communication groove 44 connected to the oil supply path 40 and the oil recovery structure 5 (the recovery hole 50 of the oil recovery structure 5).

  The oil recovery structure 5 and the hydraulic control valve 6 are the same as those in the first embodiment.

  The pressure holding mechanism 7 is a tapered surface 70 formed in the recovery hole 50, and is inserted into the recovery hole 50 with the tapered surface 70 formed so that the hole diameter increases toward the placement surface 20. And an insertion member 71 urged toward the placement surface 20 by the urging member 72.

  The tapered surface 70 is constituted by a part of the inner peripheral surface of the recovery hole 50.

  The insertion member 71 includes a pressed portion 710 that is positioned on the side of the support T relative to the mounting surface 20, and a facing portion 711 that faces the tapered surface 70 at an interval. The pressed portion 710 is positioned on the mounting surface 20 (pressure holding surface) in a normal state (a state where the supported body T is not disposed on the mounting surface 20). Therefore, when the supported body T is disposed on the placement surface 20, the insertion member 71 is pushed into the collection hole 50 by the pressed portion 710 being pressed by the supported body T.

  As described above, the pressed portion 710 is located closer to the supported body T than the placement surface 20.

  The facing portion 711 is configured such that a gap is ensured between the facing portion 711 and the tapered surface 70 even when the insertion member 71 itself is pushed most into the recovery hole 50. Therefore, even if the insertion member 71 is pushed in by the supported body T, the insertion member 71 does not block the gap between the tapered surface 70 and the facing portion 711.

  The urging member 72 is accommodated in the recovery hole 50. Further, the biasing member 72 is configured to have a natural length in a normal state (a state where the supported body T is not disposed on the placement surface 20).

  The heavy load support device 1 according to the present embodiment is as described above. Subsequently, the support of the support T by the heavy load support device 1 will be described with reference to the attached drawings.

  In order to support the support T by the heavy object support device 1, it is arranged on the mounting surface 20 of the support 2 as shown in FIG. 18. In this way, the static pressure pocket P is defined by the support T, the mounting surface 20 of the support 2, and the seal member 3.

  At this time, as shown in FIGS. 19A and 19B, the pressed portion 710 of the insertion member 71 is pushed into the recovery hole 50 by the supported body T, and the gap between the tapered surface 70 and the facing portion 711 is narrowed. . Thereby, the pressure which acts on the to-be-supported body T of the oil O in the area | region from the arrangement | positioning groove | channel 21 in the static pressure pocket P to the pressure holding mechanism 7 can be kept constant in the state which raised. In addition, the pressure which acts on the to-be-supported body T of the oil O in the static pressure pocket P becomes zero inside the pressure holding mechanism 7 (pressed part 710).

  Then, the oil supply device 42 supplies the oil O into the static pressure pocket P through the oil supply groove 43 and the oil supply passage 40, and the oil O in the static pressure pocket P is supplied through the recovery hole 50 and the recovery passage 51. Collect in the tank 41. At this time, the oil O flowing into the communication groove 44 flows from the communication groove 44 to the recovery hole 50. As described above, the recovery of the oil O in the static pressure pocket P is performed in the region surrounded by the seal member 3 (that is, in the static pressure pocket P). It can be recovered without spilling.

  And if the pressure which acts on the to-be-supported body T of the oil O in the static pressure pocket P is fully raised, the to-be-supported body T will be supported on the mounting surface 20 in the state which can be moved by slight force. The At this time, when an external force (for example, an external force acting on the mounting surface 20 when performing centering or cutting of the supported body T) acts on the supported body T, the supporting body 2 is In addition to the load of T, an external force acting on the supported body T is also supported.

  More specifically, when the external force acting on the support T on the mounting surface 20 increases, the distance between the support T and the mounting surface 20 decreases, and the oil O in the static pressure pocket P decreases. The pressure acting on the support T is increased. On the other hand, when the external force acting on the supported body T on the mounting surface 20 is reduced, the distance between the supported body T and the mounting surface 20 is increased, and the supported body of the oil O in the static pressure pocket P is increased. The pressure acting on T is reduced. Thus, even if the external force acting on the supported body T changes, the supported body T can be supported with an appropriate force.

  Then, when the supply of the oil O into the static pressure pocket P is stopped, the supported body T is supported in close contact with the placement surface 20.

  As described above, according to the heavy load support device 1 according to the present embodiment, the pressure applied to the supported body T is adjusted by adjusting the pressure or the amount of the oil O supplied into the static pressure pocket P. In addition, the oil O supplied to the static pressure pocket P can be recovered without flowing out. Therefore, it is possible to achieve an excellent effect that the pressure of the oil O can be adjusted according to the support T while suppressing the consumption amount of the oil O.

  Further, since the oil supply structure 4 has the communication groove 44 connected to the recovery hole 50, the pressure acting on the supported body T of the oil O in the region from the arrangement groove 21 in the static pressure pocket P to the pressure holding mechanism 7 is constant. In addition, the supported body T can be supported on the mounting surface 20 so that it can be moved with a slight force.

  The heavy-weight support device 1 according to the present embodiment is compared with the heavy-weight support device (a heavy-weight support device that can supply only a predetermined amount of oil O in the static pressure pocket P) as shown in FIG. And the space | interval of the to-be-supported body T arrange | positioned on the mounting surface 20 and the mounting surface 20 can be made small. Therefore, in the heavy load support device 1, the positioning accuracy can be improved as compared with the heavy load support device as shown in FIG.

  Further, in the heavy load support device 1, since the movement amount of the support T (the movement amount in the direction of contact with and away from the mounting surface 20) can be suppressed, for example, when the support T is cut, It is also possible to suppress the vibration of the support T.

  In addition, the heavy load support apparatus 1 of this invention is not limited to the content of said each embodiment, Of course, it can change suitably in the range which does not deviate from the summary of this technique.

  In the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment, the seal member 3 is arranged in the arrangement groove 21 so that a part protrudes from the placement surface 20, For example, the seal member 3 may be partially disposed in the disposition groove 21 so as to protrude from the placement surface 20.

  More specifically, the seal member 3 is configured so that a part thereof protrudes from the placement surface 20 by being pushed up to the supported body T side by the oil O supplied to the arrangement groove 21. Also good.

  In the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment, the seal member 3 is provided between the annular seal member body 30 and the seal member body 30 and the arrangement groove 21. However, the present invention is not limited to this. For example, as shown in FIG. 20A, the seal member 3 includes an annular seal member 3 main body and the ring member 31. You may make it have the hardening part 32 integrally formed on the outer periphery of the sealing member 3 main-body part.

  In this case, as shown in FIG. 20B, when the supported body T is disposed on the placement surface 20, the seal member 3 main body portion and the curing portion 32 are pressed against the supported body T. Along with this, the sealing member 3 is in a state in which the hardened portion 32 is in close contact with a portion (side surface of the oil supply passage 40) that defines the oil supply passage 40 in the support 2, and the oil O is supplied into the static pressure pocket P. However, it is prevented from jumping out from the oil supply passage 40.

  In addition, the hardening part 32 of the sealing member 3 is made of, for example, the sealing member 3 main body made of synthetic rubber, and partially vulcanized on the outer peripheral upper edge of the sealing member 3 main body, or when glass fiber is inserted during molding. It can be formed by partially strengthening or the like. In addition, the seal member 3 is formed by separately forming the seal portion main body and the cured portion 32 with different materials, and then bonding the seal portion main body and the cured portion 32 to an adhesive material (for example, various polymers such as rubber adhesives). It may be formed by integrating with an adhesive material. In this case, the hardened portion 32 can be made of a Teflon (registered trademark) -based material, a polymer material such as various plastic materials, or a metal such as a gun metal.

  Further, the seal member 3 can be constituted by only the seal member main body 30. In this case, as shown in FIG. 21A, the portion of the support body 2 that defines the arrangement groove 21 (the outer periphery side of the arrangement groove 21) extends inward in the radial direction of the arrangement groove 21. Protrusion 210 is preferably provided.

  In this way, as shown in FIG. 21B, it is possible to prevent the sealing member 3 from being removed from the placement groove 21 by the protruding portion 210 when the supported body T is placed on the placement surface 20. it can.

  In the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment, the seal member main body 30 and the ring member 31 are configured separately in the seal member 3. The seal member main body 30 and the ring member 31 may be integrally formed by, for example, attaching the ring member 31 to the seal member main body 30.

  Moreover, in said 1st embodiment, 2nd embodiment, 3rd embodiment, 4th embodiment, although the support body 2 is plate shape, it is not limited to this, For example, mounting If it has the surface 20, it may not be plate-shaped.

  Moreover, in the said 1st embodiment, 2nd embodiment, 3rd embodiment, and 4th embodiment, although the support body 2 was formed so that planar view shape might become square shape, it is limited to this. For example, as shown in FIG. 22, the support 2 may be formed so that the plan view has a rectangular shape.

  When the support body 2 in the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment is formed so that the shape in plan view is a rectangular shape, the oil supply path 40 is on the placement surface 20. You may make it include the cyclic | annular groove | channel formed. In this case, the annular groove formed on the mounting surface 20 may have a circular shape, an elliptical shape, a rectangular shape, or a rounded rectangular shape in plan view. In this case, the oil recovery structure 5 may include a groove extending along the longitudinal direction of the support 2 and the recovery hole 50 may be opened on the groove.

  Furthermore, in this case, a plurality of recovery holes 50 may be formed along the longitudinal direction of the plurality of supports 2.

  DESCRIPTION OF SYMBOLS 1 ... Heavy load support apparatus, 2 ... Support body, 3 ... Seal member, 4 ... Oil supply structure, 5 ... Oil recovery structure, 6 ... Hydraulic control valve, 7 ... Pressure holding mechanism, 20 ... Mounting surface, 21 ... Arrangement groove , 22 ... side face, 22, 22 ... side face, 30 ... seal member main body, 31 ... ring member, 32 ... curing part, 40 ... oil supply passage, 41 ... oil tank, 42 ... oil supply device, 43 ... oil supply groove, 44 ... communication Groove, 50 ... recovery hole, 51 ... recovery path, 70 ... taper surface, 71 ... insertion member, 72 ... biasing member, 200 ... pressure holding surface, 201 ... relief surface, 210 ... projection, 310 ... extension 710: pressed portion, 711: facing portion, O: oil, P: static pressure pocket, T: supported body

Claims (3)

A support having a mounting surface on which a supported body is placed and an annular placement groove formed on the placement surface, and an annular seal member placed in the placement groove, which is placed on the placement surface A seal member that can be brought into close contact with the supported body, an oil supply structure that supplies oil to a region surrounded by the seal member on the mounting surface, and oil from a region surrounded by the seal member on the mounting surface The oil recovery structure for recovering the oil and the oil supplied to the area surrounded by the seal member on the mounting surface are surrounded by the seal member so as to adjust the pressure applied to the supported body in close contact with the seal member A hydraulic control valve that adjusts the pressure or flow rate of oil supplied to the region, and the mounting surface is a pressure holding surface provided in a region surrounded by the seal member, and a region surrounded by the seal member The pressure Which has a逃面provided around around the surface, an outer surface the seal member has can be placed face to the supported body, the pressure holding surface, sealing in the mounting surface It is disposed on the same plane as the outer surface of the member or between the outer surface of the sealing member and the relief surface on the placement surface, and the oil supply structure is in a region surrounded by the sealing member. oil is supplied to the said逃面, the oil recovery structure, have a recovery hole opening on the pressure holding surface, the supplied oil, the the pressure holding surface to be from around the outer periphery of the pressure retaining surface A heavy-weight support apparatus, characterized in that it flows toward the recovery hole through a support.   Equipped with a pressure holding mechanism that adjusts the amount of oil to be recovered from the oil recovery structure, and the pressure holding mechanism is a tapered surface formed in the recovery hole, and the hole diameter is increased toward the mounting surface side. A tapered surface, and an insertion member that is inserted into the recovery hole and biased toward the placement surface, and the insertion member includes a pressed portion that is positioned on the placement surface. The weight support device according to claim 1, further comprising a facing portion that faces the tapered surface with a space therebetween.   The heavy oil support device according to claim 1, wherein the oil supply structure has an annular oil supply groove surrounding the recovery hole.

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