JP4881804B2 - Lift-up device, lift-up system, and lift-up method - Google Patents

Description

  The present invention relates to a lift-up device, a lift-up system, and a lift-up method for moving a concrete floor slab vertically.

  Conventionally, there has been known a jack-up method in which when a concrete floor slab constructed on soft ground such as a landfill site is subsidized, the concrete floor slab is lifted and corrected by a lift-up device using a hydraulic jack. (See Patent Documents 1 and 2).

In this jack-up method, a hydraulic jack is arranged at each point where the concrete slab is lifted.
JP-A-8-151653 JP-A-8-13814

  However, in the conventional jack-up method using a hydraulic jack, in addition to the number of hydraulic jacks that simultaneously perform lift-up, there are many equipments such as a hydraulic pump, a distributor, a hydraulic hose, and the cost increases.

  In addition, the work of arranging heavy equipment such as a hydraulic jack and a hydraulic pump is time-consuming, and the hydraulic hose is complicated at the construction site, which may deteriorate the working environment.

  Therefore, an object of the present invention is to provide a lift-up device that can move a concrete slab vertically in a simple configuration, and a lift-up system and a lift-up method using the lift-up device.

  In order to achieve the above object, a lift-up device according to the present invention is a lift-up device that moves a concrete floor slab arranged on a base surface in the vertical direction, and a recess is formed that is fixed to the base surface side. And a jack bar whose tip is brought into contact with the recess through a through-hole formed in the concrete floor slab, and a screw bar is screwed into the support part. A screw hole is formed, and a lift plate that is non-rotatably attached to the lower end of the through hole is provided.

  Here, it is preferable that a handle portion extending in a direction orthogonal to the axial direction is provided at a position where the jack bar protrudes upward from the concrete floor slab.

  The upper surface of the lift plate may be provided with a protruding portion that protrudes upward, and the lift plate and the concrete floor slab may be edged by an insulating material.

  Furthermore, the lift-up system of the present invention is a lift-up system in which the lift-up device is provided at a plurality of locations of the concrete floor slab, and maintains a constant interval by connecting the jack bars laterally. It is characterized by comprising a coupling device and a rotation transmission device for transmitting rotation provided at one place to all jack bars for rotation.

  And the lift-up method of the present invention is a lift-up method in which the concrete floor slab is moved in the vertical direction using the lift-up device, wherein the lift plate is installed on the support part, A step of constructing a concrete floor slab having the through hole on a base surface, and rotating the jack bar whose tip is in contact with the recess through the through hole, thereby rotating the concrete floor together with the lift plate A step of raising the plate, a step of placing a support material between the concrete floor slab and the base surface, and rotating the jack bar in the opposite direction to lower the concrete floor slab and to support the support material. A step of supporting the concrete slab, and a step of separating the tip of the jack bar from the recess.

  Another embodiment of the lift-up device according to the present invention is a lift-up device for moving a concrete slab placed on a base surface in the vertical direction, and a recess is formed that is fixed to the base surface side. The support portion, a screw groove is formed on the outer periphery, and a jack rod whose tip is non-rotatably fitted to the concave portion through a through hole formed in the concrete floor slab is communicated with the through hole. A hole is formed, a lift plate provided at a lower end of the through hole, a screw hole for screwing the jack rod, an upper end protrudes from the through hole, and a lower end extends from the lift plate. A long nut portion that protrudes, a receiving plate to which a lower end of the long nut portion is fixed, and a rotation mechanism that allows the receiving plate to rotate with respect to the lift plate.

  Furthermore, the lift-up system is a lift-up system in which the lift-up device is provided at a plurality of locations of the concrete slab, and a connecting device that maintains a constant interval by connecting the jack bars laterally; And a rotation transmission device for transmitting the rotation applied at one place to all the long nut portions to rotate.

  The lift-up method is a lift-up method in which the concrete floor slab is moved in the vertical direction using a lift-up device, and the jack rod is fitted into the concave portion of the support portion, and the jack After the receiving plate and the long nut portion are mounted on the rod, the rotating mechanism and the lift plate are installed on the receiving plate, and then the concrete floor slab provided with the through hole on the base surface A step of constructing, a step of raising the concrete floor slab together with the lift plate by rotating the long nut portion, a step of arranging a support material between the concrete floor slab and the base surface, Rotating the long nut portion in the opposite direction to lower the concrete floor slab and supporting the concrete floor slab on the support material; Wherein the tip of the key bars and a step of separation and a recess.

  The lift-up device of the present invention configured as described above is configured to move the lift plate whose rotation is restricted by the concrete floor slab by rotating the jack bar by bringing the tip of the jack bar into contact with the recess of the support part. Move it downward and move the concrete slab with it.

  For this reason, a concrete floor slab can be moved up and down by simple composition. Further, since the tip of the jack bar is brought into contact with the concave portion, the shaft slab hardly occurs when the jack bar is rotated, and the concrete floor slab can be easily moved.

  Further, the jack bar can be easily turned by providing a handle portion extending in a direction orthogonal to the axial direction of the jack bar.

  Furthermore, by providing a protrusion on the lift plate and cutting the edge between the lift plate and the concrete floor slab with an insulating material, the lift plate can be removed and recovered after the concrete floor slab is moved.

  Moreover, the lift-up system of this invention arrange | positions a lift-up apparatus in several places, and it connects rotation to all the jack sticks with a rotation transmission apparatus while connecting with a connection apparatus in a horizontal direction.

  For this reason, it is possible to operate other lift-up devices by the rotation applied at one place, and to synchronize the movement speed among the plurality of lift-up devices.

  Furthermore, in the lift-up method of the present invention, the concrete floor slab can be easily moved in the vertical direction by arranging a lift-up device when constructing the concrete floor slab.

  In another form of the lift-up device according to the present invention, the tip of the jack rod is non-rotatably fitted into the concave portion of the support portion, and the long nut portion into which the jack rod is screwed is rotated to the lower end thereof. The fixed receiving plate is moved upward or downward, and the concrete floor slab supported by the receiving plate via a rotating mechanism is moved.

  In this way, if the concrete floor slab is moved by rotating the long nut part, even if the concrete floor slab is inclined, it is difficult to transmit the inclination to the long nut part and it can be easily rotated. Can do.

  Furthermore, in the lift-up system of the present invention, lift-up devices are arranged at a plurality of locations, and they are connected in the lateral direction by a connecting device, and the rotation imparted at one location by the rotation transmitting device is applied to all the long nut portions. Communicate.

  For this reason, a moving speed will synchronize between several lift-up apparatuses, and it can move, keeping a concrete floor slab in a horizontal state.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is an explanatory diagram for explaining a method of using the lift-up device 3 of the present embodiment, and FIG. 2 is a perspective view for explaining a schematic configuration of the lift-up device 3.

  First, in this embodiment, the concrete floor slab 1 on which the lift-up device 3 is arranged will be described. The concrete floor slab 1 is a double floor supported on a concrete floor 11 as a base surface. It is a floor version. The concrete floor slab 1 is constructed as a separate body separable from the floor surface 11 by reinforced concrete or prestressed concrete.

  On the concrete slab 1, for example, as shown in FIG. 1, rails 13 are laid through sleepers 12,... So that a train can run. And in order to reduce that the vibration at the time of this train travel is transmitted to the floor surface 11, the vibration isolator 2 is interposed between the floor surface 11 and the concrete floor slab 1. FIG.

  The vibration isolator 2 is mainly composed of pedestal portions 22 and 22 fixed to the upper surface of the floor surface 11 and the lower surface of the concrete floor slab 1, and a spring portion 21 mounted between the pedestal portions 22 and 22. Has been.

  When the spring portion 21 of the vibration isolator 2 is mounted, repaired, or replaced, the concrete floor slab 1 is temporarily lifted, and the lift-up device 3 is used at that time.

  1A is a view showing a state in which the concrete floor slab 1 is lifted by the lift-up device 3 and the spring portion 21 is removed, and FIG. 1B is a vibration isolator with the spring portion 21 replaced. 2 shows a state in which the concrete floor slab 1 is supported by 2 and the jack bar 32 of the lift-up device 3 is pulled up so that the tip 322 does not come into contact with the recess 311.

  The lift-up device 3 includes a support plate 31 as a support portion that is fixed to the floor surface 11 and whose upper surface is exposed toward the concrete slab 1, and a screw groove is formed on the outer periphery of the support plate 31. It is mainly comprised from the jack bar 32 made and the lift board 33 attached to the lower surface of the concrete floor slab 1 so that rotation is impossible.

  As shown in FIG. 2, the support plate 31 is formed into a disk shape by a steel material having a high bearing resistance, and a cylindrical recess 311 is formed at the center thereof. The surface of the recess 311 is coated with a fluororesin or the like so as to reduce the frictional resistance and finished to a smooth surface.

  The jack rod 32 into which the tip 322 is inserted into the recess 311 is a screw rod formed to have an outer diameter slightly smaller than the inner diameter of the recess 311, and the tip 322 has a low frictional resistance like the recess 311. The surface is finished smooth.

  Further, the jack bar 32 has a thread groove formed on the outer periphery other than the tip 322 and has a length penetrating the concrete floor slab 1 in the vertical direction. Further, a horizontal hole penetrating in the direction perpendicular to the axial direction is provided in the upper portion of the jack bar 32, and the handle portion 321 is configured by inserting a bar material into the horizontal hole. In addition, the attachment structure of the handle | steering-wheel part 321 is not limited to this, The structure attached via a socket wrench etc. may be sufficient.

  Further, the concrete floor slab 1 is formed with a through hole 1a through which the jack bar 32 is inserted by a sleeve 1b. On the outer periphery of the sleeve 1b, although not shown, a protrusion or the like for integrating with the concrete floor slab 1 is provided.

  On the other hand, the lift plate 33 attached to the jack bar 32 is provided with a screw groove on the inner periphery of a screw hole 332 provided in the approximate center of the disk, and is formed in the screw groove on the outer peripheral surface of the jack bar 32. It comes to mesh.

  In addition, a pair of pin-shaped projecting portions 331 and 331 are projected upward on the upper surface of the lift plate 33 with the screw hole 332 interposed therebetween. Since the protrusions 331 and 331 are embedded in the concrete floor slab 1, the lift plate 33 is prevented from rotating and cannot be rotated.

  The length of the protruding portion 331 depends on how much the tip 322 of the jack bar 32 needs to be separated from the floor surface 11 as will be described later. For example, the protruding portion 331 is formed to have a length of several centimeters to several tens of centimeters. The

  Although not shown in FIG. 2, the upper surface and the side surface of the lift plate 33 are covered with an insulating cover 34 as an insulating material as shown in FIG. Is trimmed so that it does not stick.

  Next, the usage method of the lift-up apparatus 3 of this Embodiment is demonstrated, referring FIG.

  First, as shown in FIG. 3A, the floor surface 11 is constructed by placing concrete so that the upper surface of the floor surface 11 and the upper surface of the support plate 31 are flush with each other. A lift plate 33 is stacked on the support plate 31, and an insulating cover 34 is placed on the lift plate 33. Further, the jack bar 32 is screwed into the screw hole 332 of the lift plate 33, and the tip 322 is brought into contact with the recess 311.

  Subsequently, as shown in FIG. 3 (b), the portion of the jack bar 32 embedded in the concrete floor slab 1 is covered with a sleeve 1 b so that the concrete does not adhere around the jack bar 32.

  When the sleeve 1b is attached to the jack bar 32, the handle portion 321 can be once removed and attached from above, but in addition, a method of standing the jack bar 32 after installing the sleeve 1b, sleeve A method may be used in which 1b is divided in half and attached from the side.

  Then, the reinforcing bars 1c for the concrete slab 1 are assembled around the sleeve 1b, and concrete is placed. Thus, if it is the method of constructing the concrete floor slab 1 on the floor surface 11, it is not necessary to provide a support under the concrete floor slab 1, and it can construct efficiently.

  Subsequently, after the concrete floor slab 1 is constructed, when the handle portion 321 of the lift-up device 3 is grasped by hand and the jack bar 32 is rotated clockwise as shown in FIG. 3 (c), the lift plate 33 becomes the jack bar. As it rises along 32, the concrete slab 1 is also pushed upward.

  And in the state which raised the concrete floor slab 1 to the predetermined height, the spring part 21 is inserted between the upper and lower pedestal parts 22 and 22, and each is fixed with bolts 23,... (FIG. 1 (b), (See FIG. 4 (a)). In the replacement work of the vibration isolator 2, the spring part 21 of the vibration isolator 2 may be removed and replaced with a new spring part 21 as shown in FIG.

  After finishing the mounting work of the vibration isolator 2 in this manner, the jack bar 32 is turned counterclockwise to move the concrete floor slab 1 downward. Here, when the jack bar 32 is continuously rotated counterclockwise, the support of the concrete slab 1 is transferred from the lift-up device 3 to the vibration isolator 2 in the middle thereof.

  Further, when the jack bar 32 continues to be rotated counterclockwise even after the concrete floor slab 1 is supported by the vibration isolator 2, only the lift plate 33 extends along the jack bar 32 as shown in FIG. It will descend.

  Here, at the position of the concrete floor slab 1 on which the lift plate 33 has been arranged, a hole 1d having an outer shape of the lift plate 33 is formed. As long as the protrusions 331 and 331 are not completely pulled out from the hole 1d in which the protrusions 331 and 331 of the lift plate 33 are accommodated, the rotation of the lift plate 33 is prevented and the lift plate 33 is lowered. Keep doing.

  After the lift plate 33 is moved below the concrete floor slab 1 in this way, when the jack bar 32 is pulled upward as shown in FIG. 4 (b), the tip 322 of the jack bar 32 is moved to the support plate 31. It will leave | separate from the recessed part 311 of this.

  Then, the handle portion 321 is removed from the jack bar 32, and the nut portion 35 is screwed to the jack bar 32 instead and fixed to the upper surface of the concrete floor slab 1 as shown in FIG. Fix so that does not fall down.

  Thus, if the space | interval of the front-end | tip 322 of the jack stick | rod 32 and the support plate 31 is opened, the expansion-contraction of the vibration isolator 2 by the vibration which acts on the concrete floor slab 1 will not be prevented, but a vibration will be absorbed effectively. be able to.

  Next, the operation of the lift-up device 3 of the present embodiment will be described.

  The lift-up device 3 of the present embodiment configured as described above is rotated by the concrete slab 1 by bringing the tip of the jack bar 32 into contact with the recess 311 of the support plate 31 and rotating the jack bar 32. The restrained lift plate 33 is moved upward or downward, and the concrete slab 1 is also moved accordingly.

  For this reason, the concrete floor slab 1 can be moved in the vertical direction with a simple configuration. Further, since the tip 322 of the jack bar 32 is inserted into the recess 311, it is difficult for shaft shake to occur when the jack bar 32 is rotated manually, and the concrete floor slab 1 can be easily moved.

  Further, by providing the handle portion 321 extending in the direction orthogonal to the axial direction of the jack bar 32, the jack bar 32 can be easily turned. Furthermore, since the front end 322 of the jack bar 32 and the surface of the recess 311 are finished with a smooth surface so that the frictional resistance is reduced, the resistance when the jack bar 32 is turned can be reduced.

  Moreover, since such a lift-up device 3 does not require motive power to operate by human power, and has a light and simple configuration, it can be easily transported and assembled. Furthermore, since a hydraulic pump or the like is not required, it can be implemented at a low cost and has a wide range of applications.

  In addition, by using such a lift-up device 3, it is possible to attach the anti-vibration device 2 later even if the anti-vibration device 2 is not installed from the beginning of constructing the concrete floor slab 1.

  Hereinafter, a lift-up system 4 using the lift-up device 3 described in the above embodiment will be described with reference to FIGS. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  FIG. 5 is a plan view of the concrete floor slab 1 having a rectangular shape in plan view as viewed from above. This concrete floor slab 1 is supported by vibration isolators 2,... Near four corners, and four lift-up devices 3A-3D are adjacent to the vibration isolators 2,. Has been placed.

  The lift-up system 4 according to the first embodiment includes the four lift-up devices 3A-3D, the connecting devices 41,... That maintain a constant horizontal distance between the lift-up devices 3A-3D, It is mainly comprised by the rotation transmission apparatus 42 and ... which transmit rotation between up apparatus 3A-3D.

  The connecting device 41 includes gripping portions 412 and 412 that grip the jack bars 32 and 32 freely like a rod end at both ends, and a length adjusting portion that changes the amount of screwing by rotating around the axis. 411.

  As shown in FIG. 6, the connecting device 41 is spanned between the lift-up devices 3 </ b> A and 3 </ b> B, and is adjusted by the length adjusting unit 411 to a length that maintains the uprightness of the jack bars 32 and 32.

  Although not shown in FIG. 5, for example, the lift-up devices 3 </ b> A and 3 </ b> D (3 </ b> C and 3 </ b> D) are connected diagonally by the connecting device 41 to suppress the occurrence of inclination when the jack rod 32 rotates. Such a configuration can also be adopted.

  On the other hand, a rotation transmission device 42 is attached above the coupling device 41 as shown in FIG. The rotation transmission device 42 is mainly configured by a gear 422 attached to the jack rod 32 and an annular toothed belt 421 provided with teeth meshing with the gear 422 on the inner periphery.

  When the toothed belt 421 is bridged between the gears 422 and 422 attached to the jack bars 32 and 32, respectively, and one lift-up device 3A is rotated as shown in FIG. The attached belt 421 rotates, whereby the jack bar 32 of the other lift-up device 3B also rotates.

  Further, as shown in FIG. 5, the lift-up device 3A is also connected to the lift-up device 3C via a rotation transmission device 42, and the lift-up device 3D is connected to the lift-up devices 3B, 3C via the rotation transmission devices 42, 42. Therefore, when the jack bar 32 of one lift-up device 3A is rotated, the other lift-up devices 3B, 3C, 3D are also rotated in synchronization.

  Next, the operation of the lift-up system 4 according to the first embodiment will be described.

  The lift-up system 4 according to the first embodiment configured as described above has the lift-up devices 3A-3D arranged at a plurality of locations and is connected in the lateral direction by the connecting devices 41,. ... Rotation is transmitted between the jack bars 32.

  For this reason, since the other lift-up devices 3B, 3C, and 3D can be operated by the rotation applied by the lift-up device 3A at one location, the work efficiency is good.

  Moreover, since a moving speed can be synchronized among several lift up apparatus 3A-3D, the concrete floor slab 1 can be easily moved to an up-down direction, without inclining.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment, and thus description thereof is omitted.

  Hereinafter, a lift-up device 5 of a form different from the above-described embodiment will be described with reference to FIGS. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  In the lift-up device 3 described in the above embodiment, the concrete floor slab 1 is moved in the vertical direction by rotating the jack bar 32, but in this second embodiment, the long nut portion attached to the jack bar 52 is used. A lift-up device 5 that moves the concrete slab 1 in the vertical direction by rotating 521 will be described.

  As shown in FIGS. 7 and 8, the lift-up device 5 includes a support plate 51 as a support portion that is fixed to the floor surface 11 and whose upper surface is exposed toward the concrete floor slab 1, and stands on the support plate 51. A jack rod 52 having a thread groove on the outer periphery, a long nut portion 521 in which a screw hole 521a into which the jack rod 52 is screwed is formed, and a receiving plate to which the lower end of the long nut portion 521 is fixed 54 and a bearing structure 53 as a rotation mechanism for making the receiving plate 54 rotatable.

  As shown in FIG. 7, the support plate 51 is formed in a disc shape by a steel material having a high bearing resistance, and a square columnar recess 511 is formed at the center thereof.

  And the front-end | tip 522 of the jack stick | rod 52 is formed in the square column shape fitted to this recessed part 511. As shown in FIG. Moreover, it is preferable to support the upper part of the jack stick 52 so that it may not incline with the fixing device which is not shown in figure.

  Further, as shown in FIG. 8, the long nut portion 521 is a hexagonal columnar nut having a length such that the upper end and the lower end protrude from the through hole 1 a of the concrete floor slab 1, and extends in the center in the axial direction. A screw hole 521a is extended.

  And the disc-shaped receiving plate 54 is being fixed to the lower end of this long nut part 521 as shown in FIG. 7, and it is comprised so that it may rotate with rotation of the long nut part 521. . The receiving plate 54 can be formed integrally with the long nut portion 521.

  Further, an edge wall portion 541 protruding upward is formed at the edge portion of the receiving plate 54, and the bearing structure 53 is accommodated inside the edge wall portion 541.

  This bearing structure 53 is mainly composed of a lower ring 532 gripped by the receiving plate 54, a plurality of bearing balls 533,... Disposed thereon, and an upper ring 531 mounted thereon. Is done. The bearing balls 533,... Are accommodated in a holding frame (not shown) and movement of the lower ring 532 in the circumferential direction is restricted.

  The bearing structure 53 has a structure in which the upper ring 531 freely rotates on the lower ring 532 that does not rotate relative to the receiving plate 54.

  On the other hand, as shown in FIG. 8, a disc-shaped lift plate 55 in which a hole 552 communicating with the through hole 1a is formed is fixed to the lower end of the sleeve 1b forming the through hole 1a. The lift plate 55 can be formed integrally with the sleeve 1b.

  The upper surface of the upper ring 531 of the bearing structure 53 is brought into contact with the lower surface of the lift plate 55. Further, an edge wall portion 551 that restrains the movement of the upper ring 531 in the lateral direction protrudes downward from an edge portion on the lower surface side of the lift plate 55, and is surrounded by the edge wall portion 551. The upper surface of the upper ring 531 is brought into contact with the lower surface of the lift plate 55.

  When the concrete floor slab 1 is moved in the vertical direction by the lift-up device 5 configured as described above, a handle portion 523 such as a wrench is provided on a portion of the long nut portion 521 protruding above the concrete floor slab 1. Is attached and the long nut portion 521 is turned.

  Then, with the rotation of the long nut portion 521, the receiving plate 54 fixed to the lower end and the lower ring 532 mounted thereon rotate. On the other hand, the upper ring 531 placed on the lower ring 532 via the bearing balls 533,... Remains on the lower surface of the concrete slab 1 without being pressed against the lift plate 55 and rotating.

  On the other hand, when the long nut portion 521 rotates, the long nut portion 521 and the receiving plate 54 move in the vertical direction along the jack bar 52. Then, the lift plate 55 supported by the receiving plate 54 without transmission of rotation through the bearing structure 53 moves with the vertical movement of the receiving plate 54. When the lift plate 55 moves in this way, the concrete floor slab 1 integrated with it also moves together.

  After the concrete floor slab 1 is moved in this way to repair and replace the vibration isolator 2, and the concrete floor slab 1 is supported by the vibration isolator 2, the long nut portion 521 is continuously turned to receive the receiving plate 54. Is lowered, the upper ring 531 of the bearing structure 53 and the lift plate 55 are separated.

  Then, when the upper ring 531 and the lift plate 55 are separated from each other by a desired distance and then the jack bar 52 is pulled upward, the tip 522 of the jack bar 52 can be separated from the floor surface 11 by a desired distance.

  Next, the operation of the lift-up device 5 according to the second embodiment will be described.

  In the lift-up device 5 according to the second embodiment configured as described above, the long nut portion 521 in which the tip 522 of the jack rod 52 is non-rotatably fitted in the recess 511 of the support plate 51 and the jack rod 52 is screwed into the nut portion 521. , The receiving plate 54 fixed to the lower end thereof is moved upward or downward, and the concrete slab 1 supported by the receiving plate 54 via the bearing structure 53 is moved.

  As described above, when the concrete floor slab 1 is moved by rotating the long nut portion 521, the concrete floor slab 1 is inclined due to a difference in lifting speed with another adjacent lift-up device 5 or the like. Even if this is the case, it is difficult for the inclination to be transmitted to the long nut portion 521 and it can be easily rotated.

  That is, if the jack nut 52 is restrained by the long nut portion 521 and the positional displacement with the concrete floor slab 1 is prevented via the bearing structure 53, the inner periphery of the sleeve 1b and the long nut portion 521 A sufficient gap with the outer periphery can be secured, and even when the concrete slab 1 is tilted, the sleeve 1b and the long nut portion 521 come into contact with each other to prevent the occurrence of a state in which the rotational torque increases. it can.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment, and thus description thereof is omitted.

  Hereinafter, a lift-up system 6 using the lift-up device 5 described in the second embodiment will be described with reference to FIGS. The description of the same or equivalent parts as those described in the embodiment or Examples 1 and 2 will be given with the same reference numerals.

  FIG. 9 is a perspective view illustrating a schematic configuration of a lift-up system 6 configured by a plurality of lift-up devices 5.

  The lift-up system 6 according to the third embodiment includes a lift-up device 5 arranged at four corners of a rectangle, and a lateral direction between the lift-up devices 5 and 5 arranged on the diagonal of the rectangle. The connecting devices 61, 61 that keep the distance constant, the rotating shaft rod 623 arranged at the intersection of the connecting devices 61, 61, and the rotation of the rotating shaft rod 623 are transmitted to the respective lift-up devices 5,. The rotation transmitting device 62,.

  As shown in FIG. 10, the rotating shaft bar 623 is a bar member that is rotatably installed with a depression on the upper surface of the concrete slab 1 as a fulcrum 623c, and a handle 623a is attached to the upper part thereof. Further, the fulcrum 623c has a smooth surface to reduce the frictional resistance during rotation.

  Then, the connecting devices 61, 61 installed radially around the rotating shaft rod 623 are attached to the rotating shaft rod 623 through a hole having a size that does not restrict the rotation of the rotating shaft rod 623.

  Further, as shown in FIG. 10, the connecting device 61 includes a length adjusting unit 611 that adjusts the horizontal distance between the rotary shaft 623 and the jack bar 52, and a spherical bearing 612 that supports the head of the jack bar 52. It is mainly composed of

  The spherical bearing 612 is a bearing that allows rotation in a three-dimensional direction, and even if the jack rod 52 is inclined, the spherical bearing 612 can absorb the rotation.

  If the head of the jack bar 52 is formed in a nut shape, the jack bar 52 can be supported by providing a spanner-like jig at the end of the coupling device 61 instead of the spherical bearing 612. .

  Further, a long gear 623b is attached below the position where the coupling devices 61, 61 of the rotary shaft 623 intersect, and a plurality of toothed belts 621,.

  That is, the rotation transmission device 62 that transmits the rotation of the rotation shaft rod 623 to the lift-up device 5 includes a gear 623b attached to the rotation shaft rod 623, a gear 622 attached to the outer periphery of the long nut portion 521, a gear 623b, It is mainly composed of a toothed belt 621 provided with teeth on the inner periphery spanned between 622.

  Then, when the handle 623a is grasped and the rotary shaft 623 is manually rotated, the rotation is transmitted to the toothed belts 621,... Via the gear 623b, and the long nuts of the lift-up devices 5,. Will rotate at the same speed.

  The lift-up system 6 according to the third embodiment configured as described above has lift-up devices 5,... Arranged at a plurality of locations, connected in the lateral direction by the connecting devices 61,. ,... Are transmitted to all the long nut portions 521,...

  For this reason, a moving speed can be synchronized among several lift-up apparatus 5, ..., and the concrete floor slab 1 can be moved, keeping a horizontal state.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment or example, and thus description thereof is omitted.

  The best embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment and example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, in the above-described embodiment, the jack bar 32 is pulled up to a height at which the tip 322 of the jack bar 32 does not come into contact with the recess 311 and fixed with the nut portion 35. However, the present invention is not limited to this. For example, the counterclockwise rotation of the jack bar 32 as shown in FIG. 4A is continued until the lift plate 33 comes out of the punched hole 1d and starts to rotate with the jack rod 32, and the lift plate 33 from the side. Can be directly removed from the jack bar 32 and recovered together with the jack bar 32.

  Moreover, in the said embodiment, although the concrete floor slab 1 which lays the rail 13 was demonstrated, it is not limited to this, The lift-up of this invention is also applied to the concrete floor slab of the building which arranges seismic isolation rubber etc. Devices and lift-up systems can be applied.

  Furthermore, in the said embodiment, although the insulating cover 34 was arrange | positioned between the lift board 33 and the concrete floor slab 1 and edge cutting was performed, it is not limited to this, When the lift board 33 is not collect | recovered The insulating cover 34 may be integrated with the concrete slab 1 without being arranged. Moreover, when integrating in this way, the protrusion part 331 does not need to be provided in the lift board 33. FIG. Furthermore, when the lift plate 33 is integrated with the concrete floor slab 1, only the jack bar 32 can be recovered.

  Moreover, in the said embodiment, although the concrete floor slab 1 was lifted in order to perform attachment, repair, and replacement | exchange of the vibration isolator 2, it is not limited to this, Correction of non-uniform subsidence, foundation replacement, etc. For any reason, when the concrete slab is moved in the vertical direction, the lift-up device and the lift-up system of the present invention can be applied.

  Furthermore, in the said embodiment and Example, although the support plates 31 and 51 and the lift plates 33 and 55 demonstrated the disk-shaped thing, it is not limited to this, A planar view square shape, a hexagon, etc. Any shape such as a polygon or an ellipse may be used.

  Moreover, in the said Example 3, although it was set as the structure which transmits rotation of the rotating shaft stick | rod 623 to several lift-up apparatus 5, ..., it is not limited to this, A rotating shaft like Example 2 is provided. The structure which connects between the lift-up apparatuses 5, ... without using the bar | burr 623 may be sufficient.

  Furthermore, in the said Example 1 (or Example 3), although the case where one set of lift-up system 4 (6) was arrange | positioned to the concrete floor slab 1 was demonstrated, it is not limited to this, A plurality of sets are set. The lift-up systems 4,... (6,...) Can also be arranged on the concrete slab 1. That is, if all the jack bars 32,... (Or the long nut portions 521,...) Are connected by a set of lift-up systems 4 (6), a necessary rotational force becomes too large or a connecting device. 41,... (61,...) May be mixed and the configuration may be complicated, but the rotation work in a plurality of sets of lift-up systems 4,. If the concrete floor slab 1 is moved up and down, it can be easily constructed and the necessary rotational force does not become too large. Moreover, even if it is a case where several sets of lift up systems 4, ... (6, ...) are rotated, all the jack bars 32, ... (or long nut part 521, ...). Since the rotation work is reduced as compared with the case where each is individually rotated, the work efficiency is good.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing explaining the usage method of the lift up apparatus of the best embodiment of this invention, (a) is sectional drawing which showed the state which lifted the concrete floor slab, (b) is cancelled | released the support by a lift up apparatus It is sectional drawing which showed the state which carried out. It is a perspective view explaining the schematic structure of the lift-up apparatus of the best embodiment of this invention. It is explanatory drawing explaining the process until it installs a lift up apparatus and raises a concrete floor slab, Comprising: (a) is the figure which showed the state before constructing a concrete floor slab, (b) is before a lift up The figure which showed the state of (c) is the figure which showed the state which is raising the concrete floor slab with the lift-up apparatus. It is explanatory drawing explaining the process until it cancels | releases the support by a lift-up apparatus, Comprising: (a) is the figure which showed the state which has lowered | hung only the lift board of a lift-up apparatus, (b) lifted the jack stick | rod (C) is the figure which showed the state which fixed the jack stick | rod with the nut part. It is a top view explaining the schematic structure of the lift-up system of Example 1. FIG. It is sectional drawing seen from the AA arrow direction of FIG. It is a perspective view explaining schematic structure of the lift-up apparatus of Example 2. FIG. It is sectional drawing explaining the structure of the lift-up apparatus of Example 2. FIG. It is a perspective view explaining schematic structure of the lift up system of Example 3. FIG. It is sectional drawing explaining schematic structure of the lift-up system of Example 3. FIG.

Explanation of symbols

1 Concrete floor slab 1a Through hole 11 Floor surface (base surface)
2 Vibration isolator (support material)
3,3A-3D Lift-up device 31 Support plate (support part)
311 Concave portion 32 Jack rod 321 Handle portion 322 Tip 33 Lift plate 331 Protruding portion 332 Screw hole 34 Insulating cover (insulating material)
4 Lift-up system 41 Connecting device 42 Rotation transmission device 5 Lift-up device 51 Support plate (support part)
511 Recess 52 Jack rod 521 Long nut 521a Screw hole 522 Tip 53 Bearing structure (rotating mechanism)
54 receiving plate 55 lift plate 552 hole 6 lift-up system 61 coupling device 62 rotation transmission device

Claims (9)

A lift-up device for moving a concrete floor slab placed on a base surface in the vertical direction,
A support portion formed with a recess to be fixed to the base surface side;
A jack rod whose end is abutted against the recess through a through-hole formed in the concrete slab, with a thread groove formed on the outer periphery,
A screw hole for screwing the jack rod is formed, and a lift plate that is non-rotatably attached to the lower end of the through hole ,
A lift-up device , wherein a protrusion projecting upward is provided on an upper surface of the lift plate, and the lift plate and the concrete floor slab are edged by an insulating material .   The lift-up device according to claim 1, wherein a handle portion extending in a direction orthogonal to the axial direction is provided at a position of the jack bar protruding upward from the concrete floor slab. A lift-up device for moving a concrete floor slab arranged on a base surface in the vertical direction, and a support portion in which a concave portion fixed to the base surface side is formed, and a screw groove is engraved on the outer periphery. A jack bar whose tip is brought into contact with the recess through a through hole formed in the concrete floor slab, and a screw hole into which the jack bar is screwed are formed, and the lower end of the through hole cannot be rotated. A lift-up device provided with a lift plate attached to the concrete floor slab, the lift-up system provided in a plurality of locations,
A connecting device that maintains a constant spacing by connecting the jack bars laterally; and
A lift-up system, comprising: a rotation transmission device configured to transmit rotation applied at one place to all jack bars to rotate. A lift-up system in which the lift-up device according to claim 1 or 2 is provided at a plurality of locations of the concrete slab,
A connecting device that maintains a constant spacing by connecting the jack bars laterally; and
A lift-up system, comprising: a rotation transmission device configured to transmit rotation applied at one place to all jack bars to rotate. A lift-up device for moving a concrete floor slab arranged on a base surface in the vertical direction, and a support portion in which a concave portion fixed to the base surface side is formed, and a screw groove is engraved on the outer periphery. A jack bar whose tip is brought into contact with the recess through a through hole formed in the concrete floor slab, and a screw hole into which the jack bar is screwed are formed, and the lower end of the through hole cannot be rotated. A lift-up method for moving a concrete slab vertically using a lift-up device provided with a lift plate attached to
A step of constructing a concrete slab having the through hole on the base surface after the lift plate is installed on the support portion;
A step of raising the concrete slab together with the lift plate by rotating the jack bar whose tip abuts against the recess through the through hole;
Placing a support material between the concrete floor slab and the base surface;
Rotating the jack bar in the opposite direction to lower the concrete floor slab and supporting the concrete floor slab on the support material;
And a step of separating the tip of the jack bar from the recess. A lift-up method for moving the concrete slab in the vertical direction using a lift-up apparatus according to claim 1 or 2,
A step of constructing a concrete slab having the through hole on the base surface after the lift plate is installed on the support portion;
A step of raising the concrete slab together with the lift plate by rotating the jack bar whose tip abuts against the recess through the through hole;
Placing a support material between the concrete floor slab and the base surface;
Rotating the jack bar in the opposite direction to lower the concrete floor slab and supporting the concrete floor slab on the support material;
And a step of separating the tip of the jack bar from the recess. A lift-up device for moving a concrete floor slab placed on a base surface in the vertical direction,
A support portion formed with a recess to be fixed to the base surface side;
A screw rod is engraved on the outer periphery, and a jack rod is fitted to the recess through the through hole formed in the concrete floor slab so as to be separable and non-rotatable
A hole communicating with the through hole is formed, and a lift plate provided at a lower end of the through hole;
A screw hole into which the jack bar is screwed is formed, an upper end protrudes from the through hole, and a long nut portion from which the lower end protrudes from the lift plate;
A receiving plate to which a lower end of the long nut portion is fixed;
A lift-up device comprising a bearing structure that allows the receiving plate to rotate with respect to the lift plate. A lift-up device for moving a concrete floor slab arranged on a base surface in the vertical direction, and a support portion in which a concave portion fixed to the base surface side is formed, and a screw groove is engraved on the outer periphery. A jack rod whose tip is non-rotatably fitted into the recess through a through hole formed in the concrete floor slab, and a hole communicating with the through hole are formed at a lower end of the through hole. A lift plate, a screw hole into which the jack bar is screwed, a long nut portion protruding from the through hole and a lower end protruding from the lift plate, and a long nut portion of the long nut portion Rifutoa that a receiving plate which the lower end is fixed, lift-up device and a rotating mechanism for freely rotating the receiving plate to the lift plate is provided at a plurality of positions of the concrete slab A flop system,
A connecting device that maintains a constant spacing by connecting the jack bars laterally; and
A lift-up system comprising: a rotation transmission device that transmits rotation applied at one place to all the long nut portions to rotate. A lift-up device for moving a concrete floor slab arranged on a base surface in the vertical direction, and a support portion in which a concave portion fixed to the base surface side is formed, and a screw groove is engraved on the outer periphery. A jack rod whose tip is non-rotatably fitted into the recess through a through hole formed in the concrete floor slab, and a hole communicating with the through hole are formed at a lower end of the through hole. A lift plate, a screw hole into which the jack bar is screwed, a long nut portion protruding from the through hole and a lower end protruding from the lift plate, and a long nut portion of the long nut portion a receiving plate which the lower end is fixed, riffs to move the concrete slab using a lift-up device provided with a rotating mechanism for freely rotating the receiving plate to the lift plate in a vertical direction A up method,
The tip of the jack rod is fitted into the concave portion of the support portion, the receiving plate and the long nut portion are attached to the jack rod, and the rotating mechanism and the lift plate are mounted on the receiving plate. A step of constructing a concrete slab provided with the through hole on the base surface after being installed;
A step of raising the concrete floor slab together with the lift plate by rotating the long nut portion;
Placing a support material between the concrete floor slab and the base surface;
Rotating the long nut portion in the opposite direction to lower the concrete floor slab and supporting the concrete floor slab on the support material;
And a step of separating the tip of the jack bar from the recess.