JP2008195464A - Coaxial type transferring rod, and transferring construction method for heavy load article using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight and inexpensive coaxial type transferring rod more flexibly following to subsidence and settlement variation of an article to be pressure-fitted, and a transferring construction method for a heavy load article using it. <P>SOLUTION: The transferring rod is provided with a plurality of swelled parts with intervals in a longitudinal direction, and pressure-fits or draws out the article to be pressure-fitted by transferring the rod. The transferring rod is provided with first large diameter coupling members 5 arranged in series with an interval and having a coupling part at an end; a small diameter core wire member 7 for connecting and pulling the first large diameter coupling members 5 or bearing compression load and transmitting the load to the first large diameter coupling member 5 adjacent in series; a second large diameter hollow member 10 alternately arranged between the first large diameter coupling members 5 in series and arranged at an outer side of the small diameter core wire member 7 with a clearance; and small diameter hollow pipes 11, 12 having a smaller outer diameter than this. The second large diameter hollow member 10, the small diameter hollow pipes 11, 12 and the small diameter core wire member 7 are made to the insulated/separated state so as not to transmit the load by the clearance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transfer rod used for transferring a distance larger than a jack stroke by repetitive transfer of a hydraulic jack, and in particular, a coaxial transfer rod unit and a transfer rod using the same. It relates to a heavy material transfer method (press-in method) using the same.

  Conventionally, when a heavy object such as a caisson is transferred (press-fitted) or its direction is corrected, a rod used to be inserted into the center hole jack and the chuck is a transfer rod unit 30 as shown in FIG. It is known that a large number of screws are connected by screw connection (see, for example, Patent Document 1).

The transfer rod unit 30 is integrated with a solid rod unit 30 having a circular section in cross section having a male screw portion 31 at one end and a female screw portion 32 at the other end with an interval in the longitudinal direction of the rod unit 30. And a bulging portion 33 having a circular cross section provided at the upper end of the bulging portion 33, and a guide surface 34 having a frustoconical shape is provided at the upper end portion of the bulging portion 33. The part is screwed and connected to the next transfer rod unit 30 that is connected and integrated in series, or a metal fitting to be connected to the transferred object or the fixed object.
Japanese Utility Model Publication No. 61-13510

In the conventional case, the steel rod is processed by cutting or the like, and the bulging portion for engagement of the solid large cross-sectional portion and the small-diameter shaft portion 35 of the solid small cross-sectional portion are alternately provided in the longitudinal direction of the steel rod, The transfer rod unit 30 is configured by providing a male screw portion 31 on the small-diameter shaft portion 35 on one end side and a female screw portion 32 on the solid large cross-section portion on the other end side. Since the screw is joined to form a solid transfer rod 36 over the entire length, there is a problem that the weight is increased and the cost is increased.
In addition, in the screw-joined state, since the solid state is fixed over the entire length of the member, there is a problem that flexibility in the longitudinal direction of the member (axial direction) or in the lateral direction perpendicular to the longitudinal direction of the member is low. . For example, if the object to be press-fitted is suddenly sunk, it corresponds to the subsidence of the object to be pressed by the elastic deformation of the solid rod. There was a problem that the follow-up corresponding to the subsidence was low.
Further, when the rod unit is manufactured by cutting, there is a problem that there are many parts to be cut and the processing cost is high.
The present invention provides a coaxial transfer rod that can advantageously solve the above-mentioned problems, is lightweight and inexpensive, and can flexibly follow the subsidence fluctuation of a press-fit object, and a heavy load transfer method using the same. With the goal.

In order to advantageously solve the above-described problem, the coaxial transfer rod according to the first aspect of the present invention includes a plurality of bulging portions spaced apart in the longitudinal direction, and press-fitting or press-fitting an object to be pressed so as to transfer the rod. In the transfer rod for pulling out, the transfer rod is connected to the first large-diameter joint member, which is arranged in series at an interval and has a joint portion at the end thereof, and the first large-diameter joint member. A small-diameter core wire member that bears a compressive load and transmits the load to the first large-diameter joint member adjacent in series and the first large-diameter joint member alternately in series and with a gap outside the small-diameter core wire member. A second large-diameter hollow member and a small-diameter hollow tube having a smaller outer diameter than the second large-diameter hollow member, and the second large-diameter hollow member, the small-diameter hollow tube, and the small-diameter core wire member are loaded by the gap. Insulated and separated so as not to transmit It is characterized in that is.
In the second invention, the coaxial transfer rod according to the first invention is provided with a plurality of second hollow transmission tubes and a plurality of small-diameter hollow tubes between the first large-diameter joint members. And
In the third invention, in the coaxial transfer rod according to the first invention or the second invention, the small-diameter hollow tube is provided integrally with either the first large-diameter joint member or the second large-diameter hollow member. It is characterized by that.
In the heavy material transfer method according to the fourth aspect of the present invention, in the press-in method for press-fitting a press-fit object into the ground using a transfer rod and a jack provided with bulging portions at intervals in the longitudinal direction, The coaxial transfer rod according to any one of the first to third inventions is used.

According to the first invention, the transfer rod is composed of the first large-diameter joint member having the joint portion, the small-diameter core wire member, the second large-diameter hollow member, and the small-diameter hollow tube. The tube can be easily processed and configured using a commercially available inexpensive tube, and the transfer rod can be manufactured at low cost.
In addition, when the pressure-fitted structure is tilted with lateral displacement during press-fitting of the pressed-in structure using the coaxial transfer rod of the present invention, a pulling force is applied to the transferred rod. In this case, the first large-diameter joint members are connected to each other by the small-diameter core member, and the outer hollow tubes are not involved in the pulling force. Compared to a conventional solid structure transfer rod that has a bulged part as a unit, it has a structure that resists by a small-diameter core wire member between the joint members. It is possible to easily cope with horizontal displacement or vertical elongation by using a small-diameter core wire member with a small cross-sectional area. More follow-up than mold transfer rods It can be a by improving improve flexibility.
According to the second invention, since the plurality of second hollow transmission pipes and the plurality of small diameter hollow pipes are provided between the first large diameter joint members, the length between the first large diameter joint members is increased. The costly first large-diameter joint member can be reduced, and the coaxial transfer rod can be made inexpensive.
According to the third invention, since it is provided integrally with either the first large-diameter joint member or the second large-diameter hollow member, the number of parts per unit length can be reduced, and the number of parts is reduced. Therefore, the coaxial transfer rod can be assembled in a short time.
According to the fourth aspect of the present invention, when a pressed structure (heavy object) is transferred (pressed) using a coaxial transfer rod, the inclined structure with a lateral displacement occurs when the pressed structure is moved (pressed). In this case, the first large-diameter joint member is connected to each other by the small-diameter core wire member, and each outer second large-diameter hollow member or Since the first and second small-diameter hollow tubes are not involved in the pulling force, they have a structure that resists by the small-diameter core wire member between the first large-diameter joint members, and transfer of a conventional solid structure integrally having a bulging portion Compared to rods, the rigidity in the lateral direction can be reduced, and it can be easily handled by using a small-diameter core wire member with a small cross-sectional area for lateral displacement in the direction perpendicular to the axis or elongation in the vertical direction. Lateral displacement or With respect to the downward displacement, it is possible to improve the flexibility by improving the followability more than the conventional solid transfer rod, and the flexibility can be improved. There is an effect that can be further improved.

    Next, the present invention will be described in detail based on the illustrated embodiment.

  1, 2 and 5 show a coaxial transfer rod unit 1 according to a first embodiment of the present invention, which has a connecting female screw hole 2 as a joint at one end in the axial direction. The connecting female screw hole 3 as a joint portion is provided on the other end side in the axial direction, these are provided so as to have the same central axis, and the outer peripheral surface on the distal end side is gradually reduced in diameter toward the distal end side. A first large-diameter joint member 5 having a frustoconical outer surface 4 which is inclined in the axial direction is disposed at an interval in the axial direction, and the first large-diameter joint member 5 is formed with male screw shaft portions 6 at both ends. The first small-diameter hollow tube 8 having an outer diameter smaller than the outer diameter D of the first large-diameter joint member 5 is connected to the outer surface of the small-diameter core wire member 7. And the same dimensions as the outer dimensions of the first large-diameter joint member 5, A second large-diameter hollow member 10 having a frustoconical outer surface 9 inclined so as to be gradually reduced in diameter and having a through-hole having an inner diameter larger than the outer diameter of the small-diameter core member 7, and the first small-diameter medium A second small-diameter hollow tube 11 having the same shape as the empty tube 8 is fitted and disposed outside the small-diameter core wire member 7 via a gap G, and the second large-diameter hollow member 10 and the first The small-diameter hollow tube 8 and the second small-diameter hollow tube 11 and the small-diameter core wire member 7 are insulated and separated so as not to transmit a load.

  The first large-diameter joint member 5, the first small-diameter hollow tube 8, the second large-diameter hollow member 11, and the second small-diameter hollow tube 11 are sequentially arranged and connected in a crimped state. . Since the first large-diameter joint member 5 and the first small-diameter hollow tube 8 have a difference in outer diameter, an annular engagement surface is formed at the axial end of the first large-diameter joint member 5, and the second large The diameter hollow member 11 and the second small diameter hollow tube 11 have an outer diameter difference, so that an annular engagement surface is formed at the axial end of the second large diameter hollow member 10. As a result, the bulging portion 13 is formed in each of the first large-diameter joint member 1 and the second large-diameter hollow member 10.

When the second large-diameter hollow member 10 or the first or second small-diameter hollow tube 11 is coaxially arranged on the small-diameter core wire member 7 and assembled, the female screw hole 2 of the first large-diameter joint member 5 Then, after one end of the small-diameter core wire member 7 is screwed and connected, the second small-diameter hollow member 11 and the second large-diameter hollow member 10 are sequentially and coaxially fitted in series to the small-diameter core wire member 7 so that the upper small-diameter The coaxial transfer rod 1 according to the first embodiment as shown in FIG. 1A is obtained by screwing the female screw hole 3 of the first large-diameter joint member 5 positioned at the upper part into the male screw shaft portion 6 of the core member 7. Is configured.
At the end of the first small-diameter hollow tube 8 adjacent to the second large-diameter hollow member 10 in series, a frustoconical inner inclined surface 12 for contacting the frustoconical outer surface 9 is provided, Similarly, a frustoconical inner inclined surface 12 for contacting the frustoconical outer surface 9 is provided at the end of the second small diameter hollow tube 11 adjacent to the first large diameter joint member 5 in series. The inclined surfaces are in contact with each other and are in contact with each other.

  The transfer rod unit 1 is constructed by assembling as described above. When the transfer rod unit 1 is newly added to and connected to the transfer rod unit 1 as described above, the small-diameter core wire member 7 is screwed and connected to the first large-diameter joint member 1 positioned below. In the same manner as described above, the second small-diameter hollow tube 11, the second large-diameter hollow tube 10, and the first small-diameter hollow tube 8 are sequentially fitted, and finally the first large-diameter joint member 1 is attached. A long coaxial type transfer rod 14 as shown in FIG. 6 is obtained by screw-joining the small-diameter core wire member 7 and sequentially adding it.

Each member constituting the transfer rod unit 1 is made of a steel material, and the second large-diameter hollow member 10 and the first and second small-diameter hollow tubes 8 and 11 cut a commercially available tube body. The second large-diameter hollow member 10 can be manufactured by providing a frustoconical outer surface or a frustoconical inner inclined surface at the end, and a commercially available small-diameter tube is cut short, By forming the frustoconical inner inclined surface 12 on the inner surface of the short tube, the first small-diameter hollow tube 8 or the second small-diameter hollow tube 11 can be manufactured, and an inexpensive member configuration can be obtained.
Further, since only the first large-diameter joint member 5 has only to be manufactured from a steel rod by cutting or the like, the overall structure can be made inexpensive, and a gap is interposed outside the small-diameter core wire member 7 so as to be hollow. Since it is the structure using a member, weight reduction can be achieved.

  In the above-described embodiment, one second large-diameter hollow member 10 is provided between the first large-diameter joint members 1 adjacent to each other in series at an interval. The large-diameter hollow member 10 may be provided. In such a case, the small diameter hollow tubes 8 and 11 may be interposed between the second large diameter hollow members 10.

  As described above, since the second large-diameter hollow member 10 or the first and second small-diameter hollow tubes 8 and 11 are merely fitted with the gap G in the small-diameter core member 7, they are coaxial. The assembly of the mold transfer rod unit 1 or the coaxial transfer rod 14 is easy, and the on-site construction takes a short time.

  3 and 5 show a transfer rod unit 1 according to a second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the end of the first large-diameter joint member 5 has an outer diameter smaller than the outer diameter of the first large-diameter joint member 1, and the first large-diameter A first small-diameter hollow tube 8 having an inner diameter larger than the diameter of the female screw hole of the joint member 5 (the outer diameter of the male screw portion of the small-diameter core wire member 7) is integrally connected, and the end of the second large-diameter hollow member 10 is connected. The second small-diameter hollow tube 11 having the same inner diameter as the inner diameter of the second large-diameter hollow member 10 is integrally connected to the part, but the other configurations are the same as those in the above-described embodiment. In this embodiment, a commercially available steel pipe body may be cut into short pieces, and the first small-diameter hollow tube 8 or the second small-diameter hollow tube 11 may be formed by cutting. In this embodiment, the number of parts can be reduced and assembly can be performed in a shorter time than the coaxial transfer rod unit 1 or the coaxial transfer rod 14 of the first embodiment.

4 and 5 show a transfer rod unit 1 according to a third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the tip of the first small-diameter hollow tube 8 integrally connected to the first large-diameter joint member 5 is a flat surface, and the second large-diameter hollow A flat end surface is formed at the tip of the frustoconical outer surface 9 of the member 10, and these flat surfaces are in contact with each other. In addition, a flat annular bearing surface 15 is provided at an intermediate portion on the front end side of the frustoconical outer surface 4 in the first and second first large-diameter joint members 5, and is provided integrally with the second large-diameter hollow member 10. The tip of the second small-diameter hollow tube 11 thus formed is a flat surface, and the second small-diameter hollow is formed while using the tapered inclined surface on the tip side of the frustoconical outer surface 4 of the first large-diameter joint member 5 as a guide. The pipe 11 is fitted and arranged concentrically in series with the other first large-diameter joint member 1.
In FIG. 7, a small-diameter core wire member 7 is newly screwed and connected to the transfer rod unit 1 of the third embodiment, and a second large-diameter hollow member 10 with a second small-diameter hollow tube 11 is fitted and disposed. A sectional view of the first large-diameter joint member 1 with the first small-diameter hollow tube 8 connected to the new small-diameter core wire member 7 and assembling the coaxial transfer rod 14 is shown. . This form also has the same action as the second embodiment. Moreover, in this form, since the 1st large diameter coupling member 1 and the 2nd hollow member 10 contact | abut in series in the contact state of flat surfaces, the 1st large diameter coupling member 1 and the 2nd hollow member 10 can transmit an axial force efficiently as a compression axial force transmission material. Since other configurations are the same as those of the above-described embodiment, the same elements are denoted by the same reference numerals and the description thereof is omitted.

FIG. 8 shows one side of a use state in which the coaxial transfer rod 14 assembled so that the transfer rod units 1 of the first to third embodiments are connected in series and the center hole jack 16 are used in combination. Has been.
A support beam 19 and a pressure beam 20 are arranged via a pressure plate 18 fixed on a structure to be pressed (heavy object) 17. The pressure beam 20 has a lower chuck 21 and an upper chuck 22 that can be opened and closed. A center hole jack 16 provided with a loading plate 19b is installed, and an adjustment rod 23 is screwed and fixed to a lower end portion of the coaxial transfer rod 14 of the present invention inserted into the center hole jack 16. It is connected to an anchor member 25 fixed in the ground through a connecting mechanism such as an adjust coupler 24 connected to the adjusting rod 23. A temporary receiving chuck 27 that can be opened and closed is fixed to a temporary receiving arm 26 protruding from the bearing plate 18 in a cantilever manner.

In the press-fitting construction apparatus or method as described above, when the first large-diameter joint member 5 at the intermediate portion of the coaxial transfer rod 14 is temporarily received by the temporary receiving chuck 27, the press-fit structure is provided via the temporary receiving arm 26. The press-fitting reaction force of the object 17 can be temporarily supported. In this state, (1) the center hole jack 16 with the center hole jack 14 extended is shortened, Remove the protruding coaxial transfer rod unit 1 or (2) add a new coaxial transfer rod unit 1 to the portion of the rod protruding from the center hole jack 16 when the center hole jack 14 is shortened. May be attached and connected. In this way, even if the height of the center hole jack 14 is limited, the coaxial transfer rod 14 having a height (length) dimension of the center hole jack 14 from the temporary receiving chuck 27 is used. It can be constructed using a short coaxial transfer rod 14, and the upper end of the coaxial transfer rod 14 can be accommodated at the level of expansion and contraction of the upper chuck 22 and the center hole jack 14. It becomes possible.
When the first large-diameter joint member 5 is removed from the connecting female thread portion 3 and the already used short coaxial transfer rod 14 portion is reinserted into the small-diameter core wire member 7 (when assembled), the first The load received by the large-diameter joint member 5 is replaced by being supported by the temporary receiving chuck 27.

When the press-fit structure 17 is pressed into the press-fit structure 17 using the coaxial-type transfer rod 14 of the present invention as described above, the tilt-type subsidence accompanied by the lateral displacement occurs. A pulling force is applied to the rod 14. In this case, the first large-diameter joint member 5 is connected to each other by the small-diameter core wire member 7, and each outer second large-diameter hollow member 10 is connected. Alternatively, since the first and second small-diameter hollow tubes 8 and 11 do not participate in the pulling force, the first and second small-diameter hollow tubes 8 and 11 have a structure that resists by the small-diameter core wire member 7 between the first large-diameter joint members 5 and have a conventional bulging portion. Compared to the case of a solid structure transfer rod, the transverse rigidity can be reduced, and the small-diameter core member 7 having a small transverse area with respect to the lateral displacement or the vertical elongation in the direction perpendicular to the axis is provided. Can be used easily With respect to the displacement in the horizontal direction or the displacement in the vertical direction, it is possible to improve the flexibility by improving the followability more than the conventional solid transfer rod, and the flexibility can be improved. There is an effect that the safety of construction can be further improved.
When an axial compressive force is applied to the coaxial transfer rod 14, the small-diameter core wire member 7, the second large-diameter hollow member 10 on the outside thereof, the first small-diameter hollow tube 8, the second The small-diameter hollow tube 11 is a member that simultaneously transmits a compressive force, and is transmitted in the axial direction so as to be transmitted to the first large-diameter joint member 5.

In each of the embodiments, for example, a steel rod or a PC steel wire may be used as the small-diameter core wire member 7, and a PC steel material may be used for the other members.
For example, if the small-diameter core wire member 7 is made of a PC steel wire, it is lightweight and easy to handle and has excellent flexibility. Thus, it is possible to configure a coaxial transfer rod that can be flexibly accommodated.
By changing the lengths of the first small-diameter hollow tube 8 and the second hollow small-diameter tube 11, the operating length of one stroke of the movable piston of the center hole jack 16 can be freely selected, and the degree of freedom in design and construction Can be improved.

  The coaxial transfer rod 14 of the present invention can be applied to various forms of repetitive transfer devices, repetitive transfer methods or direction correcting methods using a center hole type jack, and can be arranged vertically, horizontally or inclined. It is possible to use in the state.

BRIEF DESCRIPTION OF THE DRAWINGS The coaxial type | mold transfer rod unit of 1st Embodiment of this invention is shown, Comprising: (a) is a vertical side view, (b) is sectional drawing which decomposes | disassembles and shows (a). FIG. 2 is a side view of the coaxial transfer rod unit shown in FIG. 1. The coaxial type | mold transfer rod unit of 2nd Embodiment of this invention is shown, Comprising: (a) is a vertical side view, (b) is sectional drawing which decomposes | disassembles and shows (a). The coaxial type | mold transfer rod unit of 3rd Embodiment of this invention is shown, Comprising: (a) is a vertical side view, (b) is sectional drawing which decomposes | disassembles and shows (a). It is the sectional view on the aa line of Drawing 1 (a), Drawing 3 (a), and Drawing 4 (a). It is a vertical side view which shows the state which connected the coaxial type | mold transfer rod unit of 1st Embodiment shown in FIG. 1 by the core wire member, and comprised the transfer rod. It is a vertical side view which shows the state which connected the coaxial type | mold transfer rod unit of 3rd Embodiment shown in FIG. 4 with the core wire member, and comprised the transfer rod. It is a schematic front view which shows the state which press-fits the to-be-inserted object using the coaxial-type transfer rod unit or transfer rod of this invention. (A) is a partially longitudinal front view showing a conventional transfer rod unit, (b) is a partially cutaway side view showing a state in which a number of transfer rod units of (a) are connected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coaxial type transfer rod unit 2 Connecting internal thread part 3 Connecting internal thread part 4 A truncated conical outer surface 5 A 1st large diameter joint member 6 A male threaded shaft part 7 A small diameter core wire member 8 A 1st small diameter hollow tube 9 A truncated cone shape Outer surface 10 Second hollow large-diameter member 11 Second small-diameter hollow tube 12 truncated conical inner inclined surface 13 bulging portion 14 coaxial transfer rod 15 flat annular bearing surface 16 center hole jack 17 press-fit structure 18 support Platen 19 Supporting girder 20 Pressure girder 21 Lower chuck 22 Upper chuck 23 Adjusting rod 24 Adjusting coupler 25 Anchor material 26 Temporary receiving arm 27 Temporary receiving chuck 30 Transfer rod unit 31 Male thread part 32 Female thread part 33 Enlarging for engagement Part 34 guide surface 35 small-diameter shaft part 36 transfer rod

Claims (4)

  A transfer rod having a plurality of bulging portions spaced in the longitudinal direction and for press-fitting or extracting a press-fit object so as to transfer the rod, wherein the transfer rods are arranged in series at intervals. To connect a first large-diameter joint member having a joint portion at the end and the first large-diameter joint member to bear a tensile or compressive load and transmit the load to the first large-diameter joint member adjacent in series The second large-diameter hollow member disposed alternately in series between the small-diameter core wire member and the first large-diameter joint member and with a gap outside the small-diameter core wire member, and the small-diameter hollow tube having a smaller outer diameter than the second large-diameter hollow member The second large-diameter hollow member and the small-diameter hollow tube and the small-diameter core wire member are insulatively separated so as not to transmit a load through the gap. rod.   The coaxial transfer rod according to claim 1, further comprising a plurality of second hollow transmission tubes and a plurality of small-diameter hollow tubes between the first large-diameter joint members.   3. The coaxial transfer rod according to claim 1, wherein the small-diameter hollow tube is provided integrally with either the first large-diameter joint member or the second large-diameter hollow member.   In the heavy material transfer construction method in which the object to be pressed is press-fitted into the ground using a transfer rod and a jack provided with a bulging portion at intervals in the longitudinal direction, as the transfer rod, any one of claims 1 to 3 A heavy load transfer method using the coaxial transfer rod according to claim 1.

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