JP2570092B2 - Wedge-shaped jack device and method of handling frame member in wedge-shaped jack device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wedge-shaped jack for lifting and temporarily supporting a structure such as a bridge or an expressway, and repairing or replacing a bearing interposed between a support and the like. Device and frame member for moving this wedge-shaped jack device
About how to handle .

[0002]

2. Description of the Related Art As shown in FIG. 8, a vertical load such as a dead load or a live load of a structure A is provided between a support A and a structure A such as a bridge or an expressway which is currently completed. To securely support the support B, and also to transmit a horizontal load in the direction perpendicular to the bridge axis due to an earthquake, wind, or the like, and a metal support C is interposed at both longitudinal ends of the support B. And
When the bearing C is loaded by the structure A or shakes,
Aging occurs due to factors such as generation of cracks due to distortion or bending stress, or occurrence of corrosion due to rainwater, dust and the like, so that repair or replacement work is required.

For this reason, conventionally, a metal plate or a steel sandal is stacked near the bearing C at substantially the same height as the bearing C to form a temporary receiving member D, and a hydraulic pressure capable of lifting the structure A is provided. The ordinary jack E of the type is installed in the gap near the bearing C, and the bearing C and the structure A are jacked up until they are slightly separated from each other.
Then, a metal plate or the like is further stacked on the temporary receiving member D, the structure A is temporarily received, the bearing C is removed, repaired or converted, and then returned to the original position, The structure A was once again jacked up by the jack E, the temporary receiving member D was removed, and the bearing C was repaired by jacking down.

[0004]

However, the hydraulic ordinary jack E for lifting heavy structures reaching hundreds to thousands of tons near the fulcrum is large and the installation of the bearings is difficult. Ordinary jack E
Because there are cases where it is not possible to set up, one example of those problems is listed below.

The ordinary jack E for lifting a heavy structure reaching several hundred to several thousand tons near the fulcrum is large and may be installed in the gap between the structure A and the support B. Is the length between the bearing C and the end of the support B, that is,
The edge distance is about 10-30cm, and the height of the bearing C is
For example, in the case of a bearing plate bearing or the like, the installation place of the jack E is narrow because it is about 10 to 20 cm, and the place where the bearing C is installed is located at a high place of about several meters to several tens of meters. The installation of the jack E was impossible with human power and was a dangerous operation. Furthermore, there are no ordinary jack installation places between the bearings C and C because a girder for reinforcing the structure A and other pipes are installed vertically and horizontally around the lower surface of the center of the structure A. Sometimes it was impossible. For safety reasons, it is necessary to use a normal jack E with a maximum force of about 150t in consideration of the safety factor while lifting a 100t structure, but the cylinder of the normal jack E is cylindrical. As shown in FIG. 7, a load is applied to the shoulder edge B'-B 'of the support base, so that the support shoulder edge B'-B' may be fatigued and collapsed. The jack-up height may be raised by lifting the structure so that the bearing and the structure are separated from each other by several mm. However, even when the bearing is being repaired, a normal jack E is used instead of the bearing.
However, since the structure is not supported for a long time by the ordinary jack E alone, it is necessary to interpose a temporary receiving member to support,
Therefore, sinking that occurs when the temporary receiving member is installed,
Including the amount of lifting such as the amount of familiarity, that is, jacking up the structure in the overhanging state, but if the end of the structure is raised extremely, warpage occurs in the structure,
There is a risk of cracking of the floor slab concrete near the end cross beams. The hydraulic ordinary jack E is difficult to reduce the hydraulic pressure when the jack is down, and it is difficult to control the structure because the structure is suddenly lifted down by its own weight. Normally, even during repair work, vehicles pass over the upper surface of the structure, so steps between adjacent structures may not be safe.
The lifting height is limited to about mm, and the lifting work is very precise in order to reduce the steps when lifting.However, it is difficult to finely adjust the lifting management with the hydraulic ordinary jack E. There is a tendency for lifting errors to occur, adversely affecting the structure. If the bearing is located on the surface of a river or sea,
The ship, etc. was fixed below the bearing, and repair work was carried out with a crane etc. from the ship, which became a major work,
Costly and time consuming. Normally, the jack E has a heavy weight and is difficult to move by human power to install it, and because it is relatively tall, it may fall down due to an earthquake or vibration. Yes, it may cause a major accident if dropped. Therefore, a jack device that can solve these problems has been strongly demanded.

[0006]

According to the present invention, in order to solve the above-mentioned problems, the present invention has a substantially rectangular metal box shape having a top surface opened and viewed in a plan view. A frame member in which two plate members are fixed to each other by providing a gap above and below the side wall; and a rod having a connecting member fixed to the tip thereof penetrates the other short side wall of the frame member. Push-pull means detachably fixed to the frame member; housed inside the frame member;
The movement of the frame member is restricted in the width direction by the long side walls, and the inclined surface is formed on the upper surface and the lower surface. A wedge-shaped drive member movably fitted; accommodated inside the frame member, restricted in the width direction by long side walls of the frame member, and abutted against the lower plate member to move in the length direction. A lower wedge pressure-receiving member having an upper surface having an inclined surface substantially the same as the inclined surface of the lower surface of the wedge-shaped drive member; An upper wedge pressure receiving member having a lower surface having an inclined surface substantially the same as the inclined surface of the upper surface of the wedge-shaped driving member; With the member pushed, between the short side wall and the connector inside the frame member And stopper means for the stopper plate generally inverted U-shaped rod is moved regulating wedge-shaped drive member interposed single or a plurality in the longitudinal direction; more becomes wedge
A jack device was constructed.

Also, when lifting structures such as bridges and highways.
In addition, the lateral displacement due to the horizontal load acting on the structure is absorbed.
A plate-like slide above the upper wedge pressure receiving member
Place the plate and adjust the horizontality error and
In order to absorb the
A buffer plate having substantially the same shape is mounted.

The wedge-shaped driving member and upper and lower wedges
The joint with the pressure receiving member, or the upper wedge pressure receiving member and the slide
At the joint with the plate, the sliding aid is inserted into the recess formed in one of the members.
The board is fitted and stuck in a protruding state, and the sliding aid is attached to each joint.
It comes with a plate in between.

Further, in the above-described wedge-shaped jack device,
The push / pull means, the wedge-shaped driving member, the lower wedge pressure receiving member, the upper wedge pressure receiving member, and the stopper means are removed from the frame member, and a cover having a projecting piece is attached to the outer surface of the short side wall. Multiple frame members are stacked and the short side of the long side wall
A locking piece formed by extending the side wall side end beyond the short side wall and the protruding piece are used to connect each locking piece and each protruding piece arranged vertically to the connecting plate. And a method of handling a frame member in a wedge-shaped jack device capable of carrying a plurality of frame members at once.

[0010]

[0011]

Accordingly, when the wedge-shaped drive member is pushed by the push-pull means, the wedge-shaped drive member moves upward in the longitudinal direction along the inclined surface, and the upper wedge receiving pressure located above the wedge-shaped drive member. Since the member also rises along the inclined surface, when the member is installed in the gap between the structure and the support table and the push / pull means is operated, the upper wedge pressure receiving member lifts up the structure and reaches the desired height. In this case, the wedge-shaped drive member is fixed in position by stopper means to temporarily support the structure, thereby enabling repair work of the bearing.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. First, as shown in FIG. 1, a vertical load such as a dead load or a live load applied to a structure 1 is surely provided between the support 2 and a support 2 for supporting a structure 1 such as a bridge or a highway.
In addition to transmitting the horizontal load in the direction perpendicular to the bridge axis due to an earthquake, wind, etc., a metal bearing 3 is interposed between the bearing 3 and the load from the structure 1. Repairs or replacements are required to receive the water directly or to cause corrosion by rainwater or dust. However, the place where the bearing 3 is installed is
It is often installed at a height of about 30m, which is inconvenient and dangerous, and the length between the end of the support 2 and the bearing 3, that is, the edge distance is about 10 to 30cm. In addition, since the height of the bearing 3 is, for example, about 10 to 20 cm for a bearing plate bearing or the like, the gap near the bearing 3 is very small, and it is impossible to install a jack.
The temporary receiving member and the like must be once installed, and furthermore, the work place becomes narrower and the work process becomes longer, which is difficult. However, the structure 1 can be temporarily temporarily supported by the wedge-shaped jack device 4 of the present invention. It is.

That is, as shown in FIGS. 2 and 3, a metal box-shaped frame member 6 having a substantially rectangular shape in plan view and having an opening 5 on the upper surface can be installed in a gap on the support base 2 near the bearing 3. When one short side wall 7 is used as a tip, the inner surface of the side wall 7 and two metal plate members 9-9 'continuously provided in the long side walls 8-8 are slightly spaced from each other. It is stuck. The plate members 9-9 'restrict movement of only vertical guide members described later in the longitudinal direction, and are provided as reinforcements for the frame members 6 and as reaction force receiving members for the vertical guide members.
The tip side of -8 is extended so as to protrude beyond the short side wall 7 to form a locking piece 10-10, and a screw hole 11-11 is formed substantially at the center of the locking piece 10-10. ing. On the other hand, in the approximate center of the short side wall 12 on the base end side of the frame member 6, a screw hole 13 is formed to fix a hydraulic jack described later, and a plurality of screw holes 14 are formed in corners of the side wall 12. ing. In the frame member 6 thus formed, an inclined surface 15 having substantially the same shape as an inclined surface of a lower surface of a wedge-shaped driving member described later is provided on the upper surface, and the long side wall 8-8 of the frame member 6 in the width direction.
The short side wall 17 of the thicker side of the metal lower wedge pressure receiving member 16 having a substantially rectangular shape in a plan view, which is regulated so as to be slightly shorter than the inner surface, is provided.
And the plate portion 9 ′ is brought into contact with the interior.

On the upper side of the lower wedge pressure receiving member 16, there is provided a groove 19 having inclined surfaces 18-18 on the upper surface and the lower surface, the groove 19 being provided in the longitudinal direction from the base end surface, and slightly further from the groove 19 in the width direction. A notch 21 having a substantially T-shape in plan view formed by the continuous groove portion 20 is formed, and the width direction is the same length as the lower wedge pressure receiving member 16 and the metal wedge-shaped driving member 22 is slightly longer in the length direction.
Is placed. Next, the lower surface of the wedge-shaped drive member 22 has a slope 23 substantially the same as the slope 18 of the upper surface of the upper surface of the wedge-shaped drive member 22, and the short side wall 24 having the same shape as the lower wedge pressure receiving member 16 in plan view and having a larger thickness.
And a metal upper wedge pressure receiving member 25 that is brought into contact with the plate member 9 is placed above the wedge-shaped driving member 19, and upper and lower wedge pressure-receiving members 25 and 16 move the wedge-shaped driving member 22. It is in a sandwiched state.

The upper wedge receiving member 25, the lower wedge receiving member 16, and the wedge-shaped driving member 22 can be formed of metal steel such as ordinary steel, stainless steel, alloy steel, or ceramic or plastic which can withstand a high load. However, the joint between the inclined surfaces 23, 15 of the upper and lower wedge receiving members 25, 16 and the upper and lower inclined surfaces 18-18 of the wedge-shaped drive member 22 has friction when the wedge-shaped drive member 22 is moved in the future. Is generated, so use a material with low frictional resistance, such as ethylene tetrafluoride resin.
A sliding aid plate 26 is formed , and the inclined surfaces 23, 15 of the upper and lower wedge pressure receiving members 25, 16 are formed as shown in FIG.
The sliding aid plate 26 is directly adhered to the surface of the sliding member, or smaller than the thickness of the sliding assistant plate 26, and slightly smaller than the inclined surfaces 23, 15 of the upper and lower wedge receiving members 25, 16 in plan view. A concave 27 having a shape is formed on the inclined surfaces 23 and 15;
The sliding aid plate 26 is fitted and attached to the concave portion 27, or the wedge-shaped driving member 22 is fitted as shown in FIG.
The sliding aid plate 26 is provided on substantially the entire upper and lower inclined surfaces 18-18.
The sliding aid plate 26 is directly adhered to the wedge-shaped drive member 22 by forming a concave portion 27 similar to that described above on the vertically inclined surface 18 and fitting the sliding assist material plate 26 to the concave portion 27. In the same manner, the wedge-shaped drive member 22 and the upper and lower wedge pressure receiving members 25,
The sliding aid plate 26 is interposed at the joint with the sliding member 16.

At this time, the surfaces of the inclined surfaces 18-18 of the wedge-shaped driving member 22 and the inclined surfaces 23, 15 of the upper and lower wedge receiving members 25, 16 are baked with molybdenum disulfide , chrome-plated coating, and stainless steel plate. The sliding property can be improved by fixing, spraying a metal, such as nickel, chrome, and stainless steel, and polishing, and the sliding aid plate 26 is made of a tetrafluoroethylene resin (hereinafter, P
TFE), PTFE mixed with graphite fiber and carbon, PTFE mixed with graphite fiber and molybdenum disulfide , PTFE mixed with copper alloy, copper alloy, after polishing the steel material surface,
Those baked with molybdenum disulfide , those coated with a dry slide solution on a metal surface, and the like can be used. If a material having a slidability on the inclined surface and capable of withstanding the material strength, for example, a special stainless steel material, is used, it can be used without the need for the surface treatment as described above.

Further, a plate made of stainless steel or the like having a plane area larger than that of the upper wedge pressure receiving member 25 is placed as a slide plate 28 above the upper wedge pressure receiving member 25 so as to be freely movable in the horizontal direction. The slide plate 28 and the upper wedge pressure receiving member
25, a thin stainless steel plate 24 'is interposed therebetween, and a plate-shaped upper portion of the slide plate 28 is formed of urethane rubber or the like, which has substantially the same shape as the slide plate 28 in a plan view, and is somewhat elastic and has a shock absorbing power. The plate 29 is placed on the lower surface of the structure to absorb horizontality errors and gradients.

The lower wedge-receiving member 16, the wedge-shaped driving member 22, and the upper wedge-receiving member 25 provided inside the frame member 6 are moved as close as possible to the end of the support base 2 in the gap on the support base 2 near the support 3. The lower wedge pressure receiving member 16, the wedge-shaped driving member 22, and the upper wedge pressure receiving member 25
After the interior of the wedge-shaped drive member 22 is installed, a notch portion having a substantially T-shape in a plan view formed by a groove portion 19 connected in the length direction from the base end surface of the wedge-shaped drive member 22 and a groove portion 20 connected in the width direction from the groove portion 19. A fitting 30 that can be moved only in the up-down direction is fitted to 21, and a screw hole 31 is formed in the center of the base end surface of the connecting tool 30, and a hydraulic jack shown as 32 in the figure is formed in the screw hole 31. A push-pull means 35 is formed with the tip of the rod 33 of the jack 32 as a screw portion 34 for screwing. After associating the push-pull means 35 with the wedge-shaped driving member 22 in this manner, the slide plate 28 and the plate-like plate 29 are further placed. At this time, the gap between the frame member 6 and the support base 2 is set. The upper surface of the plate-like plate 29 and the lower surface of the structure 1 are 0 to
When the rod 34 is pushed toward the tip by operating the hydraulic jack 32 after being adjusted and installed to be about several mm, the inclined surface 18 of the wedge-shaped drive member 22 is pushed. Rises along the inclined surface 15 of the lower wedge pressure receiving member 16 while moving in the distal direction, and the upper wedge pressure receiving member 25
Is raised along the inclined surface 18 on the upper surface of the wedge-shaped driving member 22, so that the plate-like plate 29 above the upper wedge pressure receiving member 25
Abuts against the structure 1, lifts the structure 1, and maintains the pressing of the hydraulic jack 32 when the structure 1 reaches a desired position, while maintaining the base end face of the connector 30 and the short side wall. A single or a plurality of substantially U-shaped metal plate-shaped stopper plates 36 may be interposed so as to cover the rod 33 appearing between 12 or other appropriate means, for example, a pin may be inserted into the rod and partially protruded. The wedge-shaped drive member
It can be adopted as stopper means 37 for preventing return of 22,
The structure 1 can be temporarily supported without the need for a conventional temporary receiving member.

Further, when the wedge-shaped jack device 4 is moved after the repair or replacement of the bearing is completed, the wedge-shaped drive member 22, the upper wedge pressure-receiving member 25, the lower wedge pressure-receiving member 16, the slide, and the like. Plate 28, plate-shaped plate 29, hydraulic jack 3
2. Since the connecting member 30, the stopper plate 36 and the frame member 6 can be disassembled for each part, it can be easily moved manually, and after removing the hydraulic jack 32 from the frame member 6, A hole 39 is formed in the plate 38 at the same position as the screw hole 14 formed in the corner of the base end surface of the member 6, and a projection 40 is erected substantially at the center of the outer surface of the plate 38. 6, a cover 42 having a hole 41 formed in a substantially central portion thereof is covered and fixed with screws 43 or the like, and as shown in FIG.
The plurality of frame members 6 can be moved by being connected to the holes 41 of the protruding piece 40 and the holes 45 formed in the connection plate 44 by locking means such as pins. If the frame member 6 is connected by locking the plurality of holes 45 formed in the connecting plate 44 with locking means such as bolts in order to connect the protruding pieces 10-10 at the tip end, it is even more safe. The plurality of frame members 6 can be connected and transported.

Since the conventional hydraulic jack force and the vertical load including the structure's own weight are in a ratio of 1: 1, a heavy structure reaching several hundreds to several thousand tons is applied near the fulcrum. The jacks for lifting are naturally large and therefore bearing 3
Although there was a problem that it could not be installed in a nearby clearance, as shown in Table 1, the lifting of the structure's own weight exceeding the hydraulic jack force was possible by the wedge-shaped gradient and the activity function. That is, Table 1
As shown in Table 1, the friction coefficient μ differs depending on the combination of the aforementioned wedge-shaped drive member 22 and the sliding aid plate 26, and in Table 1, the vertical load R is set to a constant value, the friction coefficient μ is set to 0.07,
0.10, 0.15, 0.20, and shows the required hydraulic jack force P when the wedge gradient is changed from 2.3 ° (4%) to 33 ° (65%) at each friction coefficient μ. 4.5 ° (8%)
When the friction coefficient μ is 0.07, the value of 0.30R is found from Table 1, which indicates that lifting can be performed with a hydraulic jack force of 30% with respect to a vertical load. In other words, the structure 1 can be lifted by the jacking force P at least equal to or less than the vertical load R in the frame surrounded by the thin line in Table 1, but in actual use, at least a half of the structure's own weight is used. Preferably the following hydraulic jack force,
1/2 to 1/5 if the wedge gradient is within the thick line frame of 2.3 ° to 8.5 °
It has been found that this is possible to the extent that the sliding aid plate 26
When PTFE is used for lifting the structure, the wedge-shaped driving member 22 is moved up and down by the upper and lower wedge pressure receiving members 2 when the structure is lifted.
The wedge-shaped drive member 22 does not return in the base direction unless a starting force such as pulling the base end by the hydraulic jack 32 is applied without the wedge-shaped drive member 22 being moved in the proximal direction by being sandwiched between 5 and 16. In consideration of various safety factors during lifting, it is more preferable that the weight is about 1/4 of the weight of the structure.The gradient is 2.8 ° to 5.7 ° and the friction coefficient μ is 0.
If set to 07, the structure can be lifted by a hydraulic jack force of about 1/3 to 1/4 of the weight of the structure, and the structure can be lifted except for the stopper means. (1) The wedge-shaped drive member 22 naturally moves to the base end side by its own weight, and a small hydraulic jack can be used. Therefore, the wedge-shaped jack device 4 is naturally reduced in size, and can be installed in a gap near the support 3. is there. In addition, since only the wedge-shaped drive member 22 of the wedge-shaped jack device 4 and the upper and lower wedge pressure receiving members 25 and 16 can be lifted in the gap near the bearing 3, the hydraulic jack 32 does not need to be located in this gap. Lifting is possible.

Further, in the present embodiment, a plate-shaped wedge-shaped driving member 22 is used. However, if the wedge-shaped driving member 22 has an upper surface and a lower surface inclined, FIGS. )
It is also possible to use a substantially quadrangular pyramid-shaped wedge-shaped driving member 22 ', a substantially conical wedge-shaped driving member 22 ", or the like, as shown in FIG. It is intended to lift objects. For example, the wedge-shaped jack 4
In other words, it is possible to move the upper wedge pressure receiving member 25 downward or to the side by pushing the wedge-shaped driving member 22 in the longitudinal direction.

[0022]

[Table 1]

[0023]

As described above, even when a structure is being lifted, the vibration of the vehicle or the like is transmitted to the wedge-shaped jack device on the upper surface of the structure, and the support of the structure is horizontally moved in the bridge length direction. Since a slide plate is interposed between the upper wedge pressure receiving member and the structure to absorb the movement amount, even if the structure moves a little in the horizontal direction, the slide plate also moves, and the wedge-shaped drive member A load is always applied in the vertical direction, the wedge-shaped jack device can be safely supported without tilting, and if an elastic plate-like plate is interposed between the slide plate and the structure, the vertical and horizontal It absorbs the rotational force generated by the direction.

Further, by providing the sliding aid plate on the joint surface of the wedge-shaped driving member and the upper and lower wedge pressure receiving members, the coefficient of friction between the members can be reduced, so that the hydraulic jack serving as the pushing / pulling means has a smaller force. Since the structure can be lifted, the wedge-shaped jack device is downsized.

The wedge-shaped jack device can be disassembled into the wedge-shaped drive member, the upper and lower wedge pressure receiving members, the frame member, the hydraulic jack, and the like. Even if the installation place is at a high place, the movement is easy, so that the time and cost can be greatly reduced and the work process is shortened. Moreover, the above-described members are removed from the frame member, and a plurality of the frame members in a state where a cover having a projecting piece is attached to the outer surface of the short side wall are stacked,
A locking piece formed by extending the short side wall side end of the long side wall beyond the short side wall, and using the protruding piece, each locking piece and each protruding piece are arranged vertically. By connecting to the connecting plate, a plurality of frame members can be transported at once.

Further, when the structure is lifted, the stopper means restricts the movement of the wedge-shaped driving member to the base end, so that the structure can be supported at a desired position.
Further, since a temporary receiving material is not required, the gap near the bearing can be widely used, so that the work is easy.

Therefore, the heights of the wedge-shaped driving member and the upper and lower wedge pressure receiving members are reduced because the adjacent side members and the short side wall having a small thickness are located in opposite directions. The length of each member in the width direction can be shortened, and the structure can be lifted by a hydraulic jack force of 1/2 or less of the weight of the structure, and the hydraulic jack is reduced in size. installation can also, by using the conventional ordinary jack and wedge-shaped jack apparatus according to the surface area 4 as shown in phantom in FIG. 7, compared to the distance l ₁ between the support Titan portion B 'ordinary jack support Titan unit B 'and wedge-shaped jack device 4
The distance l ₂ with respect to the above becomes l ₁ <l ₂ , and the collapse of the edge of the shoulder of the support base can be prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a bearing installation state.

FIG. 2 is an exploded perspective view of a wedge-shaped jack device used in the present invention.

FIG. 3 is a central longitudinal sectional side view of a wedge-shaped jack device in which an internal mechanism of a hydraulic jack is omitted.

FIGS. 4A, 4B, and 4C are perspective views for explaining another embodiment of a wedge-shaped driving member.

FIGS. 5A and 5B are partially enlarged sectional views of a wedge-shaped jack device.

FIG. 6 is an explanatory view of a state in which the frame members are stacked.

FIG. 7 is an explanatory view showing a conventional example.

FIG. 8 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

1: Structure, 2: Support, 3: Bearing, 4: Wedge jack device, 5: Opening, 6: Frame member, 7: Short side wall, 8: Long side wall, 9: Plate member, 10: Lock Piece, 11: screw hole, 12: short side wall, 13: screw hole, 14: screw hole, 15: inclined surface, 16: lower wedge pressure receiving member, 17: short side wall, 18: inclined surface, 19: groove, 20: groove, 21: notch, 22: wedge-shaped drive member, 23: inclined surface, 24:
Short side wall, 25: Upper wedge pressure receiving member, 26: Sliding aid plate, 27:
Recess, 28: slide plate, 29: plate-like plate, 30: connector, 31: screw hole, 32: hydraulic jack, 33: rod, 34: screw, 35: push / pull means, 36: stopper plate, 37: Stopper means, 38: plate, 39: hole, 40: projection, 41: hole, 42: cover, 43: screw, 44: connecting plate, 45: hole.

Claims (4)

(57) [Claims] 1. A metal box having a substantially rectangular shape in plan view with an open upper surface, and a gap is vertically formed between one short side wall (7) and both long side walls (8) (8) inside. The other short side of the frame member (6) is provided with a frame member (6) having two plate members (9) and (9 ') fixed thereto and a rod (33) having a connector (30) fixed to the tip. A push / pull means (35) detachably fixed to the short side wall (12) in a state penetrated through the side wall (12), and housed inside the frame member (6); The notch (21), which is restricted in the width direction by the long side walls (8) and (8), forms the inclined surfaces (18) and (18) on the upper and lower surfaces, and is provided continuously with the thick-side base end surface. A wedge-shaped drive member (22) in which a connector (30) of the push-pull means (35) is movably fitted only in the vertical direction; The frame member (6) is housed inside, and is restricted in the width direction by the long side walls (8) and (8), and is restricted in the length direction by contacting the lower plate member (9 ').
A lower wedge pressure receiving member (16) having an upper surface having an inclined surface (15) having substantially the same shape as an inclined surface of the lower surface of the wedge-shaped driving member (22); The long side walls (8), (8) restrict the movement in the width direction and stop against the upper plate member (9) to restrict the movement in the length direction. An upper wedge receiving member (25) having a lower surface having an inclined surface (23) having substantially the same shape as the above, and an inner portion of the frame member (6) in a state where the wedge-shaped driving member (22) is pushed by the pushing / pulling means (35). And the short side wall (1
The rod (33) between 2) and the coupling (30) is substantially inverted U
A wedge-shaped jack device comprising: a stopper means (37) for restricting the movement of the wedge-shaped drive member (22) in the longitudinal direction by interposing one or a plurality of stopper plates (36) in the shape of a letter. 2. An upper part of the upper wedge pressure receiving member (25) in order to absorb a lateral displacement caused by a horizontal load acting on the structure (1) such as a bridge or a highway when lifting the structure (1). A plate-like slide plate (28) is placed on the slide plate (28), and the slide plate (2) is set in order to absorb horizontality errors and gradients on the lower surface of the structure.
2. The wedge-shaped jack device according to claim 1, wherein a buffer plate (29) having substantially the same shape as the slide plate (28) is placed on the upper side of (8).
Place . 3. A joining portion between the wedge-shaped driving member (22) and the upper and lower wedge receiving members (25) and (16) and a joining portion between the upper wedge receiving member (25) and the slide plate (28). The sliding aid plate (26) is fitted and adhered to the concave portion (27) formed in one of the members in a protruding state, and the sliding assisting plate (26) is interposed at each joint. Or 2
Wedge-shaped jack device . 4. A metal box having a substantially rectangular shape in plan view with an open upper surface, and a gap is vertically formed between one short side wall (7) and both long side walls (8) (8) inside. The other short side of the frame member (6) is provided with a frame member (6) having two plate members (9) and (9 ') fixed thereto and a rod (33) having a connector (30) fixed to the tip. A push / pull means (35) detachably fixed to the short side wall (12) in a state penetrated through the side wall (12), and housed inside the frame member (6); The notch (21), which is restricted in the width direction by the long side walls (8) and (8), forms the inclined surfaces (18) and (18) on the upper and lower surfaces, and is provided continuously with the thick-side base end surface. A wedge-shaped drive member (22) in which a connector (30) of the push-pull means (35) is movably fitted only in the vertical direction; The frame member (6) is housed inside, and is restricted in the width direction by the long side walls (8) and (8), and is restricted in the length direction by contacting the lower plate member (9 ').
A lower wedge pressure receiving member (16) having an upper surface having an inclined surface (15) having substantially the same shape as an inclined surface of the lower surface of the wedge-shaped driving member (22); The long side walls (8), (8) restrict the movement in the width direction and stop against the upper plate member (9) to restrict the movement in the length direction. An upper wedge receiving member (25) having a lower surface having an inclined surface (23) having substantially the same shape as the above, and an inner portion of the frame member (6) in a state where the wedge-shaped driving member (22) is pushed by the pushing / pulling means (35). And the short side wall (1
The rod (33) between 2) and the coupling (30) is substantially inverted U
A stopper means (37) for restricting the movement of the wedge-shaped drive member (22) in the longitudinal direction by interposing one or a plurality of letter-shaped stopper plates (36). 6)
A push-pull means (35) and a wedge-shaped drive member (22)
, A lower wedge pressure receiving member (16), and an upper wedge pressure receiving member (2).
5) and the stopper means (37) are removed, and the cover (4) having a protruding piece (40) on the outer surface of the short side wall (12).
A plurality of the frame members (6) with the attached 2) are stacked and the short side wall (7) end of the long side wall (8) is short side wall.
Utilizing the locking pieces (10) extending beyond (7) and the protruding pieces (40), the locking pieces (10) and the protruding pieces (40) arranged vertically are used. Each connecting plate (44)
(44) A method for handling a frame member in a wedge-shaped jack device, which is capable of carrying a plurality of frame members (6) at one time.