JP2006328645A - Floor slab exfoliation machine and method for peeling floor slab - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor slab exfoliation machine of a simple structure for peeling off a floor slab and a method of peeling off the floor slab. <P>SOLUTION: In this floor slab exfoliation machine for peeling off floor slabs fixed to a steel beam for each floor slab block, a pivotally supporting beam 8 formed of a body in a traveling vehicle body 9 allowed to run in the axial direction of a bridge is liftably installed in a liftable link mechanism type lifting device 10 placed on the floor slabs on both sides of a floor slab block 2 to be peeled off. The pivotally supporting beams 8 having the link mechanism type lifting device 10 are disposed at intervals parallel with each other. A floor slab block supporting beam 34 is installed across the pivotally supporting beams 8, and a suspension bar 37 pivotally supporting the floor slab block 2 to be peeled off is fitted to each floor slab block supporting beam 34. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a floor slab peeling machine and a floor slab peeling method for peeling a floor slab on a girder such as a steel girder.

  Conventionally, many floor slabs for steel girders in road bridges (especially concrete slabs) were made in the 1960s. However, in recent years, damage to concrete slabs has increased, requiring replacement. However, many concrete floor slabs are in service, and the current situation is that large-scale construction such as stopping traffic and replacing them is not possible. Therefore, it is partially replaced within a short time at night due to one-side regulation.

Therefore, a floor slab peeling machine that can remove the existing floor slab is required, and various floor slab peeling machines have been devised (for example, see Patent Documents 1 to 4).
In particular, in the present situation where a part is replaced within a short time at night, the removal cost can be significantly reduced if it can be removed in a short time. Therefore, a new precast floor slab can be installed earlier, and the entire renewal construction cost including removal of the floor slab and new installation of the floor slab can be reduced.
Japanese Patent Publication No. 6-43682 Japanese Patent Publication No. 7-26371 Japanese Patent Publication No. 7-26369 Japanese Patent No. 2671199 Japanese Patent No. 2671201

  When removing floor slabs or installing floor slabs, after finishing the slab removal and installation night work, you must quickly clean up the equipment such as the floor slab peeling machine, and pass a general car at dawn. There is a need for a unit system in which the floor slab and floor slab peeling machine can be easily carried by a crane or the like. In addition, it is necessary to pass a hanging rod (bolt) that lifts a hole through an existing concrete floor slab (hereinafter also referred to as an existing floor slab), but in reality, the existing floor slab is an obstacle to drilling such as reinforcing bars. The thing (steel material) is embedded, and it is the present condition that a hole cannot be drilled in the position as planned, and the apparatus which can respond to the position of a hole is calculated | required.

  And the biggest problem is the joining of steel girders and floor slabs. (1) Non-synthetic girders (when slab stops the floor slab, the floor slab only transmits the load to the steel girders. There is a form in which all load burdens are borne by steel girders) and (2) composite girders.

  In the non-synthetic girder of (1), since the steel girder and the concrete floor slab are joined by a slab stopper having a relatively small joining strength, the floor slab can be peeled off from the steel girder with a relatively small force. However, the composite girder of (2) has a structure in which a steel girder and a concrete floor slab are integrated with a high-rigidity gibber. The stud gibber firmly fixed by welding is embedded in the floor slab concrete, and it is necessary to cut off the adhesion between the stud diver and the concrete floor slab, which requires a large force.

  In addition, the stud gibel has a rough pitch at the center of the span and a dense pitch near the fulcrum, and the arrangement pitch is different. Therefore, a large jack must be prepared in order to be able to cope with any place. However, when the pitch of the stud gibel in the center of the span is rough (the number of stud gibels is small) with a very large jack, it may damage the steel girder itself if a large force is applied to peel the floor slab from the steel girder. is there.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a floor slab peeling machine having a simple structure and a floor slab peeling method using the floor slab peeling machine, which can advantageously solve the above-mentioned problems.

  The present invention is configured as follows to solve the above-described problems.

  The floor slab peeling machine of the first invention is a floor slab peeling machine that peels a floor slab fixed on a steel girder for each floor slab block, and is placed on each floor slab of the floor slab block to be peeled. A link mechanism type lifting device that can be raised and lowered is installed with a support beam so that it can be moved up and down, and a floor slab block support beam is constructed so as to cross the support beam, and the floor slab block support beam is peeled off. A hanging rod for supporting the floor slab block to be provided is provided.

The floor slab peeling machine of the second invention is a floor slab peeling machine for peeling a floor slab fixed on a steel girder for each floor slab block.
The liftable link mechanism type lifting device mounted on the floor slabs on both sides of the floor slab block to be peeled can be moved up and down with the support beam composed of the main body in the traveling vehicle body that can run in the bridge axis direction. And the support beams provided with the link mechanism type lifting device are arranged in parallel at intervals, and a floor slab block support beam is constructed over each of the support beams, each floor slab block support beam, A hanging rod for supporting the floor slab block to be peeled is provided.

  According to a third invention, in the floor slab peeling machine according to the first or second invention, a jack is detachably attached to the link mechanism type lifting device.

  The floor slab peeling method according to the fourth aspect of the present invention is the floor slab peeling method in which the floor slab fixed on the girder is peeled for each floor slab block. Place the floor slab block on both sides of the floor slab block, connect the floor slab block support beam and the floor slab block to be peeled off by connecting bolts inserted through the vertical holes provided in the floor slab block, and link The link mechanism type lifting device is operated by a jack removably attached to the mechanism type lifting device, and the floor slab block is peeled off from the steel beam.

  In the floor slab peeling method of the fifth invention, in the floor slab peeling method of the fourth invention, the floor slab block is lifted in a state in which the link in the link mechanism type lifting device is steeply inclined in the vertical direction and the lifting force is increased. It peels from a steel girder, and then the link is set to a laterally inclined state, and the floor slab block is further lifted to peel the floor slab block from the steel girder.

According to the present invention, the support beam is installed on the liftable link mechanism type lifting device mounted on the floor slabs on both sides of the floor slab block to be peeled, and can be moved up and down, and intersects the support beam. Since the floor slab block support beam is erected and a suspension bar for supporting the floor slab block to be peeled is provided on the floor slab block support beam, the floor slab block support beam is provided at the position of the hole for suspending the floor slab block. In addition, the support beam and the floor slab block support beam are configured to cross each other, so that the hanging rod can be installed quickly, and the floor slab block can be peeled easily and easily. Can be a machine.
In addition, since the center hole jack of the horizontal orientation is detachable, the center hole jack can be replaced as appropriate, and the peeling force can be set according to the joining state of the stud gibber of the steel girder and the floor slab. It becomes a floor slab peeling machine with a high degree of freedom in performance.
In addition, the floor slab peeling machine that combines the bearing beam that also serves as the traveling vehicle body, the floor slab block support beam and the lifting device, etc. is unitized, so the work start preparation time and end preparation time should be shortened. Can do.
Further, in the method for peeling a floor slab according to the present invention, the floor slab block can be easily and easily peeled from the steel girder using a floor slab peeling machine, and in response to the peeling load, The jack can be replaced, and the floor slab block can be peeled off from the steel girder while the lifting force is increased to the maximum even with a small jack by simply placing the link in a steeply inclined vertical orientation. be able to.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 6 show an embodiment of a floor slab peeling machine 1 according to the present invention, and FIGS. 7 to 11 show a floor slab of a unit unit to peel an existing floor slab using the floor slab peeling machine. It is a side view which shows the process of cut | disconnecting to the block 2 and peeling and removing this. FIG. 12 is a partially longitudinal front view showing a relationship between the stud gibber 4 provided on the steel girder 3 and the concrete slab 5 or the floor slab block 2, and FIG. FIG. 4B is a partially longitudinal front view showing a state where the floor slab block 2 and the stud gibel 4 are cut off, and shows a state where the floor slab block 2 is raised to a level at which it can be transported and removed. FIG.

  As shown in FIG. 1 and FIG. 12 (A), in the steel road bridge 6, a number of stud dibels 4 and the like are provided on the upper part of the steel girder 3 having an H-shaped section or a box-shaped section at intervals in the bridge axis direction. A shift stopper member is provided, and the steel girder 3 and the concrete floor slab 5 are integrated with each other via a shift stopper member such as the stud gibber 4.

  The concrete floor slab 5 as described above is cut into a flat rectangular floor slab block 2 in a smaller unit by inserting a cut 43 passing through the concrete floor slab 5 along a predetermined cutting line in a plane by a concrete cutter or the like. To do. Even in the cut slab block 2, the slab block 2 is attached to the steel girder 3 via the stud gibber 4 so as to be integrated.

  1 to 6, the floor slab block 2 in the state as described above is forcibly lifted, the adhesion between the floor slab block 2 and the stud gibber 4 is cut, and the floor slab block 2 is peeled off and removed. A floor slab peeling machine 1 according to one aspect of the present invention is shown.

  Next, the configuration of the floor slab peeling machine 1 of the present invention will be mainly described with reference to FIGS. 1 to 6. Steel girders 3 are installed on a pier or an abutment at intervals, and each steel girder 3 The traveling rails 7 are detachably laid on the existing floor slabs 5 installed so as to be in positions corresponding to the steel girders 3 respectively. In consideration of laying again after the predetermined section is removed, the traveling rail 7 has a size of about a unit length in the bridge axis direction of the floor slab block 2 to be peeled. When removing and re-laying, a short distance rail is sufficient, so construction is easy.

  After the floor slab block 2 is removed, the newly installed precast floor slab block 2a is installed and a traveling rail is laid, so that the floor slab peeling machine 1 can travel in the bridge axis direction.

  As shown in an enlarged view in FIG. 5, the floor slab peeling machine 1 is provided with a plurality of gaps in the bridge axis direction on the lower surface of each traveling vehicle body 9 that also serves as a support beam 8 that extends in the bridge axis direction. (In the case of illustration, two) link mechanism type lifting devices 10 are provided, and the upper portion of the steel support member 11 in each link mechanism type lifting device 10 is fixed by a fixing means (not shown) such as a bolt. It is fixed to the traveling vehicle body 9.

  The link mechanism type lifting device 10 is configured such that a shoe 13 made of a steel block and a support member 11 are moved toward or away from each other in a vertical direction by a hydraulic lifting jack 12 so as to be symmetrical. The upper ends of the arranged upper links 14 and 15 are pivotally connected to the support member 11 by pins 16 respectively, and the lower ends of the lower links 17 and 18 arranged symmetrically are respectively pinned to the shoe 13. 16, the lower link of the upper link 14 on one side portion in the left-right direction and the upper end portion of the lower link 17 are connected rotatably by the horizontal shaft 19 on the driven side. A lower end portion of the upper link 15 on the side and an upper end portion of the lower link 18 are connected to each other by a horizontal shaft 20 on the drive side so as to be rotatable.

  Each of the driven-side and drive-side horizontal shafts 19, 20 is provided with a horizontal through hole 21 at the center in the axial direction, and the drive screw rod 22 extends across the horizontal through-hole 21 of each of the horizontal shafts 19, 20. Is inserted and arranged at one end of the drive screw rod 22 on the outer side of the driven horizontal shaft 19 and on the outer side of the support member 23. A female screw member 24 made of a nut to be supported is screwed and fixed to the drive screw rod 22. A lock nut may be provided outside the female screw member 24.

  On the other end side of the drive screw rod 22, a support member 23a is inserted and disposed on the outer side of the horizontal shaft 20 on the drive side, and is in contact with the horizontal shaft 20, and has an L-shaped cross section on the outer side of the support member 23a. A vertical portion 28 of a steel-made jack support member 46 is inserted into the drive screw rod 22, and a cylinder in the lifting jack 12 comprising a center hole jack 12a in a vertical portion 28 or a horizontal portion 29 of the jack support member 46 is provided. 30 is detachably attached by a bolt (not shown), and the other end portion of the drive screw rod 22 is fixed to the drive screw rod 22 with a female screw member 25 made of a nut outside the hollow piston 31. The support member 23a and the jack support member 46 may be integrated. A support member 23 a and a jack support member 46 are supported on the drive screw rod 22, and the center hole jack 12 a is supported via the jack support member 46.

  When the lifting jack 12 is driven to extend (or shorten), the driven lateral shaft 19 and the driving lateral shaft 20 move toward (separate) from each other, and The support members 11 can be moved away from or close to each other. Therefore, when the center hole jack 12a is extended in a state where the lower surface of each shoe 13 in the floor slab peeling machine 1 is placed on the existing (or newly installed) floor slab 5, the floor slab peeling machine 1 is lifted to raise. The floor slab block 2 connected to the ascending side (traveling vehicle body 9) can be lifted and moved to peel off.

  Further, since the center hole jack 12a is detachably attached to the jack support member 46 by bolts or the like, the center hole jack 12a having a high lifting performance is replaced with a high lifting performance (in other words, a floor slab. A floor slab peeling machine 1 having a high block 2 peeling performance can be obtained. Considering the replacement of the center hole jack 12a as described above, the links 14, 15, 17, 18, the pins 16, the horizontal shafts 19, 20 and the like can be used for various performances if they are made of highly rigid members. can do.

Further, the lower end portion of the vertical screw rod 32 is connected to the shoe 13. In the form shown in the figure, a vertical hole is provided in the shoe 13, a lower portion of the vertical screw rod 32 is inserted, and a nut 47 screwed and fixed to the lower end portion is accommodated in the recess of the shoe 13. The upper part of the vertical screw rod 32 is inserted through the vertical hole of the support member 11 and the vertical hole of the traveling vehicle body 9, and is disposed so as to penetrate the vertical center hole jack 33 arranged vertically in the upper part of the traveling vehicle body 9. A female screw member 26 made of a nut is screwed into the upper portion of the vertical screw rod 32 at a position away from the hollow piston 45 of the vertical center hole jack 33.
When the floor slab block 2 is peeled off, the vertical screw rod 32 and the vertical center hole jack 33 are in close contact with the existing floor slab 5 or the like when the floor slab block 2 is peeled off, and mechanical force is applied to the separation of the Shu 13 from the existing floor slab 5 or the like. When necessary, the female screw member 26 at the upper part of the vertical screw rod 32 is moved downward and brought into contact with the hollow piston 45 in the vertical center hole jack 33, and the vertical center hole jack 33 is extended in this state. Then, the shoe 13 can be separated from the existing floor slab 5. When the vertical center hole jack 33 is operated, the wheel 38 of the traveling vehicle body 9 is placed on the traveling rail 7 so that the reaction force is received by the floor slab 5 or the steel girder 3. The side of the hole jack 12a is shortened so that a gap is provided between the hollow piston 31 and the female screw member 25.

  In addition, the vertical center hole jack 33 is configured so that the links 14, 15, 17, and 18 (see FIG. 8), which are steeply inclined by the lateral center hole jack 12a in the lifting device 10, are gently inclined (see FIG. 7). When the vertical center hole jack 33 is extended and controlled so as to shorten the lateral center hole jack 12a, the floor slab peeling machine 1 can be lowered in a stable state. 15, 15, 17, 18 can also be used when making the sideways gentle inclined state. Note that the links 14, 15, 17, and 18 may be placed in a gently sloping state with only the center hole jack 12a facing sideways.

The support beams 8 (traveling vehicle body 9) arranged in parallel at intervals in the direction perpendicular to the bridge axis include bridge shafts of the support beams 8 between the lifting devices 10 arranged at intervals in the bridge axis direction. A floor slab block support beam 34 is erected across both sides in the direction. Each floor slab block support beam 34 is placed on the support beam 8 with the webs of the cross-sectional groove members 35 made of a pair of channel steels arranged in parallel at close intervals, and bolts ( (Not shown) is detachably attached.
The pair of cross-sectional groove members 35 in the floor slab block support beam 34 are arranged at close intervals, whereby a gap 36 continuous in the direction perpendicular to the bridge axis is formed, and the gap 36 is perpendicular to the bridge axis. Suspension rods 37 made of a plurality of connecting bolts are arranged vertically at intervals in the direction, and the upper portions of the respective suspension rods 37 extend over the upper surface of the cross-sectional groove member 35 constituting the floor slab block support beam 34. Are inserted into the upper bearing plate 40 and are screwed into a female screw member 27 comprising a nut disposed on the upper surface thereof. Further, the lower end portion of the hanging rod 37 is inserted and arranged in a vertical hole 41 provided in the floor slab block 2 to be peeled, and is inserted into a lower bearing plate 42 arranged on the lower surface of the floor slab block 2, and its support. The pressure plate 42 is screwed into a female screw member 27 made of a nut arranged on the lower surface.
As described above, the gaps 36 that are continuous in the direction perpendicular to the bridge axis are provided. Therefore, even if the vertical hole 41 provided in the floor slab block 2 is slightly displaced in the direction perpendicular to the bridge axis, the suspension rod 37 is moved in the direction of the bridge axis. It can be easily installed with its position adjusted.
If each support beam 8 (traveling vehicle body) is provided with attachment portions such as female screw holes or bolt insertion holes at intervals in the longitudinal direction of the member, the position of each floor slab block support beam 34 is adjusted and attached. Thus, the degree of freedom of the size of the floor slab block 2 to be peeled can be increased, and this can be easily dealt with.

  As the suspension rod 37 made of a connecting bolt, a normal steel rod or a PC steel rod of both screws can be used. In order to cope with various peeling loads, it is desirable to use a PC steel rod. .

  The traveling wheels 38 provided at both ends of the traveling vehicle body 9 in the front-rear direction may move the wheel support frame 39 up and down (level adjustable) with a jack or the like relative to the traveling vehicle body 9 body. A traveling carriage is constituted by the traveling vehicle body 9 and the traveling wheels 38 and the floor slab block support beams 34 that connect the vehicle bodies to each other, and a lifting device 10 and the like are attached to the traveling carriage to constitute the floor slab peeling machine 1.

  Next, a description will be given of a method in which the above-described floor slab peeling machine 1 is used to cut the incision 43 into the existing floor slab 5 to form the floor slab block 2, which is then stripped.

  As shown in FIG. 1, the floor slab peeling machine 1 is disposed at the position of the existing floor slab 5 that is assumed to be the position of the floor slab block 2 to be peeled off. The floor slab peeling machine 1 can be placed on the rail 7 by using a crane or the like. For this purpose, the traveling body of the floor slab peeling machine 1 is preferably provided with a hanging metal fitting (not shown) that is engaged with a hanging hook such as a crane.

  Next, as shown in FIG. 7, the center hole jack 12 a in the lifting device 10 is slightly extended to seat the shoe 13 on the existing floor slab 5.

  Next, as shown in FIG. 8, at least the rails 7 on the floor slab block 2 to be peeled are removed, spaced apart in the bridge axis direction, and a pair of continuous rails in the direction perpendicular to the bridge axis to the floor slab bottom surface. The longitudinal cut 43 is provided by a concrete cutter or the like, and the floor slab block 2 in the section to be peeled is set.

  The floor slab block 2 is provided with a plurality of penetrating vertical holes 41 through which a plurality of (four in the illustrated case) suspension rods 37 are inserted at intervals in the bridge axis direction and at intervals in the direction perpendicular to the bridge axis. A lower portion of the suspension rod 37 as a suspension rod inserted between the cross-sectional groove members 35 is passed through the vertical holes 41, and a female screw member 27 including a bearing plate 42 and a nut is provided on the lower surface side of the floor slab block 2. Each is attached to a hanging rod 37.

  The female screw member 27 attached to the suspension rod 37 is used to place the female screw member 27 at the upper end of the suspension rod 37 in order to place the links 14, 15, 17, 18 in the link mechanism type lifting device 10 in a steeply inclined state in the vertical direction. Keep it in the position.

  When the links 14, 15, 17, 18 in the lifting device are gently inclined in the horizontal direction, the lifting force in the vertical direction is small, so the center hole jack 12 a in the lifting device 10 is extended and the links 14, 15, 17 are extended. , 18 are in a vertically inclined state with a steep inclination, and the lift force in the vertical direction is increased to a maximum, and in this state, the female screw member 27 on the upper side of the suspension rod 37 is placed on the floor via the upper bearing plate 40. The lower surface of the floor block 2 is supported on the lower surface of the plate block support beam 34, and the lower female screw member 27 is supported on the lower surface of the plate block 2.

  Next, the center hole jack 12a is further extended, and the floor slab block 2 is lifted through the suspension rod 37. For example, as shown in FIG. (Stud gibber 4 and floor slab block 2 are separated), and floor slab block 2 is separated from steel girder 3.

  In the steeply inclined links 14, 15, 17, 18, since the lifting distance is small, the center hole jack 12 a is shortened, and the carriage 9 is lowered as shown in FIG. The block 2 is placed on the steel beam 3, and the upper female screw member 27 of the suspension rod 37 is rotated so as to move downward, and is engaged with the bearing plate 40 on the floor slab block support beam 34. The hall jack 12a is extended to raise the floor slab block 2 so that it is completely separated from the steel girder 3 and separated.

  Next, as shown in FIGS. 11 and 13, a new precast floor slab 48 is placed on the steel girder 3 from the direction perpendicular to the bridge axis over the steel girder 3 by an appropriate floor slab framing machine (not shown). Then, the stud gibber 4 is disposed in the through hole 49 in the newly installed precast floor slab 48, filled with the non-shrink mortar 50, etc., and is integrated with the existing rail 7 so as to be connected to the existing precast floor slab 48. Rail 7a is laid.

  In the peeling of the floor slab block 2, when the lower surface level of the peeled floor slab block 2 becomes higher than the upper surface of the laying rail 7 (7 a) in a state where the wheels 38 in the traveling vehicle body 9 are placed on the rail, The floor slab block 2 can be conveyed and removed by running the plate peeling machine 1 in the bridge axis direction while supporting the floor slab block 2.

  Then, after the floor slab peeling machine 1 is moved to the position where the next stripping and removal is to be performed, the same process as described above is sequentially repeated in the direction of the bridge axis, and the stripped slab block 2 is sequentially separated into the newly-installed precast floor. Replace with version 5 and install.

  As described above, the links 14, 15, 17, and 18 in the link mechanism type lifting device 10 are initially placed in a steeply inclined vertical state, the floor slab block 2 is lifted, and after the separation is completed, the link is again performed. Since the floor slab block 2 is lifted with the 14, 15, 17, and 18 being gently inclined, the floor slab block 2 can be peeled off with a small capacity center hole jack 12a.

  As described above, when the floor slab block 2 is peeled off using the link mechanism type lifting device 10 such as the pantograph type, the force that pushes the laterally gently inclined link horizontally by the center hole jack 12a as the vertical force is Can only get a small force. In contrast, when the link is steeply inclined in the vertical direction, if the center hole jack 12a is pushed horizontally with the same force, the vertical force is replaced with a large force. When the floor slab block 2 is peeled off, the maximum force is required because it is necessary to cut off the attachment of the gibber 4 first. Therefore, in the present invention, the attachment of the gibber 4 is once cut while the link is steeply inclined in the vertical direction, and then the link is returned to the gently inclined state (such as the initial state) such as sideways, and the floor slab block 2 is raised again. It is difficult to peel off.

  As described above, in the present invention, the interval between the support beams 8 and the interval between the floor slab block support beams 34 are matched to the position of the hole 41 for the suspension bar 37 provided in the floor slab block 2 to be peeled, By configuring in a cross-beam shape in advance, the installation work of the hanging rod 37 can be performed quickly.

  Since the center hole jack 12a can be replaced with a jack having various performances, the peeling force can be set in accordance with the joining state of the stud gibber 4 of the steel girder 3 and the floor slab block 2.

  Since the whole of the floor slab peeling machine 1 of the present invention is united, the work start time from the installation of the floor slab peeling machine 1 to the start of the work, the transportation of the floor slab peeling machine 1 after the work is completed. End time until removal can be shortened efficiently.

  In the above embodiment, the floor slab block support beam 34 is configured by a pair of cross-sectional groove-shaped members. However, when the present invention is implemented, the floor slab block support beam 34 is configured by a pair of shape steels and the like. Alternatively, it may be replaced with a floor slab block support beam with a gap (not shown) integrated by welding or the like with a spacer interposed between the longitudinal ends of a pair of shaped steels.

It is a partially longitudinal side view which shows the state arrange | positioned in the position of the floor slab block which should peel the floor slab peeling machine of this invention. It is a top view of FIG. It is a partially vertical side view which expands and shows a part of FIG. It is a top view which expands and shows a part of FIG. It is a partial longitudinal side view which expands and shows the raising apparatus vicinity in the floor slab peeling machine in this invention. It is a partially longitudinal side view which shows the state which is supporting the floor slab block via the bolt with the floor slab block support beam in a floor slab peeling machine. It is a partially longitudinal side view which shows the process of peeling a floor slab block with the floor slab peeling machine of this invention. It is a partially longitudinal side view which shows the process of peeling a floor slab block with the floor slab peeling machine of this invention. It is a partially longitudinal side view which shows the process of peeling a floor slab block with the floor slab peeling machine of this invention. It is a partially longitudinal side view which shows the process of peeling a floor slab block with the floor slab peeling machine of this invention. It is a partially longitudinal side view for demonstrating laying a new precast floor slab block and a rail on it after peeling a floor slab block. (A) is a longitudinal front view in a state where a steel girder and a concrete floor slab are integrated by a stud gibber, and (B) is a longitudinal front view showing a state in which a floor slab block is peeled off from a stud gibber of a steel girder. It is a partially longitudinal front view in the case of integrating a new precast floor slab block and a steel girder with non-shrink mortar.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor slab peeling machine 2 Floor slab block 3 Steel girder 4 Stud gibber 5 Floor slab 6 Road bridge 7 Traveling rail 7a Traveling rail 8 Bearing beam 9 Traveling vehicle body 10 Lifting device 11 Supporting member 12 Lifting jack
13 Shu 14 Upper link 15 Upper link 16 Pin 17 Lower link 18 Lower link 19 Driven side shaft 20 Drive side shaft 21 Horizontal through hole 22 Drive screw rod 23 Bearing member 23a Bearing member 24 Female screw member 25 Female screw member 26 Female screw Member 27 Female screw member 28 Vertical portion 29 Horizontal portion 30 Cylinder 31 Hollow piston 32 Vertical screw rod 33 Vertical center hole jack 34 Floor slab block support beam 35 Cross-sectional groove member 36 Gap 37 Suspension rod 38 Wheel for traveling 39 Frame 40 Upper bearing plate 41 Vertical hole 42 Lower bearing plate 43 Notch 45 Hollow piston 46 Jack support member 47 Nut 48 New precast floor slab 49 Through hole 50 Non-shrink mortar

Claims (5)

In the floor slab peeling machine that peels the floor slab fixed on the steel girders for each floor slab block,
The liftable link mechanism type lifting device mounted on the floor slabs on both sides of the floor slab block to be peeled is installed with a support beam so that it can be moved up and down, and the floor slab so as to cross the support beam A floor slab peeling machine characterized in that a block support beam is installed and a suspension rod for supporting the floor slab block to be peeled is provided on the floor slab block support beam. In the floor slab peeling machine that peels the floor slab fixed on the steel girders for each floor slab block,
The liftable link mechanism type lifting device mounted on the floor slabs on both sides of the floor slab block to be peeled can be moved up and down with the support beam composed of the main body in the traveling vehicle body that can run in the bridge axis direction. And the support beams provided with the link mechanism type lifting device are arranged in parallel at intervals, and a floor slab block support beam is constructed over each of the support beams, each floor slab block support beam, A floor slab peeling machine characterized in that a suspension bar for supporting a floor slab block to be peeled is provided.   The floor slab peeling machine according to claim 1 or 2, wherein a jack is detachably attached to the link mechanism type lifting device.   4. A floor slab peeling method in which a floor slab fixed on a girder is peeled for each floor slab block. Placed on the plate, the floor slab block support beam and the floor slab block to be peeled were connected by a connecting bolt inserted into a vertical hole provided in the floor slab block, and detachably attached to the link mechanism type lifting device A method for peeling a floor slab characterized in that the link mechanism type lifting device is operated by a jack to peel the floor slab block from the steel girder.   In the link mechanism type lifting device, the link is lifted in the vertical direction and the floor slab block is peeled from the steel girder in a state where the lifting component force is increased, and then the link is set in the sideways gentle inclined state, and further the floor slab The method for peeling a floor slab according to claim 4, wherein the block is lifted to peel the floor slab block from the steel girder.

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