KR102077307B1 - Landfill type detachable fixed support device for bridge inspection facility and construction method - Google Patents

Abstract

The present invention relates to a buried rotation attachment and detachment fixing support apparatus for a bridge inspection facility, capable of allowing a worker to accurately and conveniently modify and adjust a fastening position of a fixing support without difficulties, by enabling the adjustment of the strength of magnetic force through rotation of a magnet module, and a construction method thereof. According to the present invention, the buried rotation attachment and detachment fixing support apparatus for a bridge inspection facility comprises: a support body having a single or a plurality of magnet module chambers; a rotation control plate; a magnet fixing plate; and a fixing support.

Description

Landfill type detachable fixed support device for bridge inspection facility and construction method}

The present invention relates to a buried rotary detachable fixed support device for a bridge inspection facility and a construction method for allowing a fixed support to which a bridge inspection unit is fixed and fixed to a steel formwork by being pre-embedded before placing concrete in a bridge. More specifically, it is necessary to change the attachment position with the steel formwork when the fixed support that is fixed by the strong magnetic force is exerted on the steel formwork during the concrete placing work of the pier without installing a separate anchor bolt in the pier after being buried. It is possible to adjust the strength of the magnetic force through the rotational movement of the module so that the operator can correct and adjust the binding position of the fixed support accurately and conveniently without difficulty, and it is not only the accuracy and stability of the fixed force, but also the ease of convenient operation and the durability of the device. Landfill for bridge inspection facilities The present invention relates to a rotating detachable fixed support device and a construction method thereof.

As is well known, the bridge inspection facility is a subsidiary facility of the bridge established by Article 44 of the Rules on the Structure and Facility Standards of the Ministry of Land, Infrastructure and Transport. It is installed on the side wall of bridge (pier) for the purpose of improving bridge management efficiency. In other words, it is useful for the maintenance and management of bridges as safety inspection and maintenance of bridges, facility repairs, reinforcement work facilities, and fittings work facilities. to be.

Conventionally, after the bridge is completed to install the bridge inspection stand, which is the bridge safety check passage, on the bridge side wall (normally the bridge), the fixing support which is the binding end of the bridge safety check passage is normally fixed by drilling a bolt hole in the bridge side wall. An anchor bolt was installed. Recently, however, drilling of bolt holes in piers is prohibited to damage the piers, and the trend is to pre-buy anchor bolts before placing concrete on the piers.

For reference, the conventional bridge inspection platform, which is a bridge safety inspection passage, is illustrated in the general construction structure diagram of FIG. 1A and the detail enlarged view "A" of FIG. 1B, and the formation of the bridge 10, which is a bridge sidewall, when the bridge supporting concrete structure is manufactured. After installing the steel formwork as a guide plate on the site and pouring concrete to complete the drying after removing the steel formwork, and then to install the bridge inspection platform on the pier (10) of the concrete structure first to the bridge side wall (10) An anchor bolt 12 is embedded in the formed bolt hole, or the fixing bracket 22 which is an end of the scaffold support (main post) 20 constituting the bridge inspection stand with respect to the pre-embedded anchor bolt 12 position. It is precisely connected and assembled, and fastening the inspection scaffold 24 and the handrail post (handrail post) 26 onto the scaffold support 20 in the horizontal direction to complete an integrally structured bridge inspection stand. Is common.

By the way, the pre-buying of the anchor bolt 12 is performed at the same time as the concrete placing and reinforcement work of the pier 10, the important thing is that the fixed position is changed before the concrete placement due to the interference with the reinforcement work of the pier 10. In many cases, it is very difficult to accurately fix the anchor bolt 12 to the bridge 10 at the binding position at which the bridge inspection stand is installed.

Therefore, there is a problem in that a bolt hole must be drilled in the pier to install the bridge inspection stand, which is a bridge safety check passage, as in the prior art, without utilizing the preloaded anchor bolt. As such, there is no interference with reinforcing bar reinforcement of bridge piers and can be installed simply and quickly by only one worker. Device) and Patent No. 10-1437150 (bridge safety checkpoint) have been introduced.

However, this level of technology also damages the structure by drilling holes in the anchor after the completion of the structure, and interferes with the reinforcement placed near the surface of the concrete during drilling. It could not be punctured according to the position, and the entry depth of the anchor was not constant according to the interference with the reinforcing bar, so that the allowance of the anchor was small and unreliable.

As a proposed technique for solving such a problem, Patent Publication No. 10-2010-0037696 (embedded anchor and its installation method) and Patent Publication No. 10-2006-0035986 (embedded anchor with a nut) are introduced. However, these patented technologies, as the coupling position of the facility that is fixed to the buried anchor when the coupling position is moved (in the case of the inspection frame, the difference in the space-time spacing between the frame by inspection), the facility (checking Low frame) spaces are different from each other, there is a problem that can not achieve the desired support.

In addition, as a technique to solve this problem, by using a magnet attached to the surface of the metal formwork before the concrete is laid to cure, so that the anchor can be easily and conveniently embedded and installed without damaging or damaging the surface of the metal formwork. Patent Publication No. 10-2019-0101312 (Magnetic embedded anchor and facility construction method using the anchor) to provide a magnetic buried anchor, which is a magnetic method using a magnet to damage the metal formwork The anchor can be easily attached without damage, and thus, the economical effect can be provided by the cost reduction effect such as the maintenance cost and the purchase cost by extending the life of the metal formwork.

However, it is important to note that all of the disclosed magnetic buried anchor means are neodyes that normally exert strong magnetic force once they are attached to the metal formwork once the anchor means or the structure to which the bridge inspection stand is bound before the concrete is laid to form the bridge. (ND) The fixed support of these self-supporting buried anchor means or bridge inspection means using magnets does not solve the structural problem that it is almost impossible to change the position by the worker's power, so the installation work itself is very difficult and sometimes There was a very uncomfortable limit that could lead to a safety accident.

The present invention is to structurally reliably solve all the inconvenient limitations and problems of the conventional buried fixed support means for the bridge inspection facility, and the fixed support fixed to the steel formwork during the concrete placement of the bridge is a bridge inspection facility If it is necessary to change the attachment position with the steel formwork according to the binding position of the bridge check table, the strength of the magnetic force can be adjusted by rotating the magnet module that can be easily operated without any difficulty for the operator. The fixed position can be adjusted precisely and conveniently, so that the accuracy and stability of the fixing force on the steel formwork of the fixed support can be improved, as well as the ease of operation and the durability of the device. The device and its construction method There is a purpose in the title.

In constituting the buried rotary detachable fixed support device for a bridge inspection facility and a construction method of the present invention for achieving the above object, the buried rotary detachable fixed support device is magnetically attached to the steel formwork during the concrete pouring of the bridge piers While being located inside and the outside is open and the magnet module chamber has a single or multiple protruding sealed to the inner side toward the pier, and is inserted from the outside open to the magnet module chamber is inserted outward through the central shaft fastening hole The rotating shaft is coupled to the center rotation shaft is coupled to the module rotation bolt from the opposite pier side and moved back and forth with the center rotation shaft during the rotation operation of the module rotation bolt, and screwed to the outside of the rotation control plate a plurality of magnets Binding groove is formed in the groove to show strong magnetic force Is a magnet fixing plate in which a plurality of permanent magnets are respectively screwed into the magnet binding groove, and a bolt means for bolting the fixing bracket, which is an end of the scaffold support, when the bridge inspection stand is installed, is fastened to a bridge that is cured during concrete pouring. The fixed support is magnetically attached to the steel formwork including a bolt coupling rod which protrudes inwardly into the piers at the bolt fastening hole position penetrated by the support body so as to be firmly fixed and supported.

In particular, the support main body is formed integrally with the inner part of the magnet module chamber protruding toward the pier before the concrete is placed or integrally structured by a separate screw connection, and is located inside the pier side of the magnet module chamber when the attachment position is adjusted to the steel formwork. A more important technical feature is that the magnetic force between the permanent magnets and the permanent magnets can be controlled while the permanent magnet of the magnet fixing plate is moved and controlled along with the rotation control plate which is moved along the central axis through the rotation operation of the module rotating bolt. have.

In addition, the magnet fixing plate has a plurality of permanent magnets are screwed into the corresponding magnet binding groove, and integrally structured by screwing the rotation control plate bolted to the module rotation bolt and bolted to the module rotation bolt before concrete placement. It is also characterized in that it is configured to separate the magnet fixing plate and the rotation control plate from the inner space of the magnet module chamber by the separating operation of the central rotating shaft.

In addition, the bolt coupling rod is preferably configured so that the locking washer and the locking bolt is fastened or a separate locking projection is integrally projected so as to be firmly fixed to the interior of the pier when removing the steel formwork from the bridge piers cured after concrete.

And the construction method using the buried rotary detachable fixed support device of the present invention of such a configuration, the first step of attaching the support base of the fixed support to the pier side of the steel formwork before the concrete casting of the piers, and the attachment position for the steel formwork The permanent magnet of the magnet fixing plate is moved and controlled along with the rotation control plate which is moved along the central rotation axis inside the magnet module chamber through the rotation operation of the module rotation bolt located inside the pier side of the magnet module chamber during the adjustment. Conveniently adjusting the attachment position of the fixed support by adjusting the magnetic force between the permanent magnets, and the attachment position of the fixed support to the steel formwork is determined, and after removing the steel formwork after curing the bridge concrete bolted to the module rotating bolt In the magnet module chamber by separating the centered shaft Construction the construction method of the potted rotation detachable fixing the support device to implement As a step that can easily separate these magnets fixed plate and the rotational control panel from the space has its features.

In particular, in the construction method of the buried rotary detachable fixed support device for the inspection of the bridge facility according to the present invention, after removing the steel formwork after curing the concrete of the bridge before the bolt coupling the fixing bracket which is the end of the scaffold support when installing the bridge inspection stand There is also a technical feature that further includes the step of space-sealing with a separate sealing cover in the inner space in which the magnet fixing plate and the rotation control plate is separated from the magnet module chamber and bolting the fixing bracket of the scaffold support.

As described above, the buried rotary detachable fixed support device for bridge inspection facility and construction method thereof according to the present invention is a fixed support in which a bridge inspection platform installed on a sidewall of a conventional bridge is fastened to a steel formwork with a pre-embedded line before the concrete is placed in a pier. A new buried rotary detachable fixed support device that allows rotation to be attached and detached.A fixed support that is fixed to steel formwork when concrete is laid in a pier needs to be changed in position with the steel formwork according to the binding position of the bridge inspection facility, which is a bridge inspection facility. In this case, it is possible to adjust the strength of the magnetic force through the rotational movement of the magnet module that can be easily operated without any difficulty of the operator, so that the operator can accurately and conveniently adjust the binding position of the fixed support without difficulty. Accuracy and safety of secure clamping force on steel formwork The castle, of course, even the durability of the ease of convenient operation and the device is expected to be significantly enhanced.

Particularly, the permanent magnet of the magnet fixing plate can be easily and easily rotated apart based on the plate body of the support base, which is magnetized to the steel formwork, to give ease of work and accuracy of the attachment part when pre-installing the fixed support of the rotation space detachable fixing support. It is possible to change the position with the steel formwork using the difference of the magnetization force and attach it detachably to the desired binding part, which is not only the accuracy and stability of the fixed fixing force against the steel formwork of the fixed support, but also the ease of operation and the device In addition to the durability of the magnet module, such as the magnet fixed plate and the rotation control plate containing the permanent magnet as a magnet module, after removing the steel formwork before the bridge inspection stand installation can be removed from the magnet module chamber without difficulty to increase the resource recovery savings. .

Figure 1a and Figure 1b is a view showing the construction of the conventional bridge safety inspection passage construction for a conventional bridge inspection facility and detail "A" part of Figure 1a.
2 is a fixed support which is a buried rotary detachable fixed support device for a bridge inspection facility is embedded in the bridge side wall by the construction method according to the present invention, and then a conventional bridge inspection stand is simply fixed by bolt (screw) coupling to the fixed support Construction structure drawing.
Figure 3a and Figure 3b is a perspective view of the outer side and the inner side in the engaged state of the fixed support constituting the buried rotary detachable fixed support device for a bridge inspection facility of the present invention.
Figure 4 is a perspective view of the separated state of the basic structure of the fixed support constituting the buried rotary detachable fixed support device for a bridge inspection facility of the present invention.
Figure 5 is a cross-sectional structural view of the fixed support constituting the buried rotary detachable fixed support device for a bridge inspection facility of the present invention.
Figure 6 is a separate closure plug is fitted so that when the conventional bridge inspection stand is connected and fixed to the magnet module chamber outer space of the fixed support constituting the buried rotary detachable fixed support device for the bridge inspection facility of the present invention Working status.
7A and 7B are perspective views of an application structure in which the magnet module chambers may be structurally applied to three or one single unit to the support body of the fixed support constituting the buried rotary detachable fixed support device for the bridge inspection facility according to the present invention.
8 is a magnet module chamber so that concrete placing work of the bridge side wall can be carried out after the fixed support constituting the buried rotary detachable fixed support device for the bridge inspection facility of the present invention is correctly positioned with respect to the bridge check stand binding position of the steel formwork. It is a state of use that controls the magnetic force by adjusting the separation distance between permanent magnet and steel formwork by rotating module rotating module.

Hereinafter, with reference to the accompanying drawings of the preferred embodiments will be described in detail the specific configuration relationship and operation principle that can be implemented in the buried rotary removable fixing support device and construction method for the bridge inspection facility of the present invention.

The present invention is basically a buried rotary detachable fixed support device using the magnetic force for the bridge inspection facility is fixed to the steel formwork 30 during the concrete pouring work of the bridge 10, as shown in the construction structure applied to the present invention of FIG. If the fixed support 40 needs to change the attachment position with the steel formwork 30 according to the binding position of the bridge support 20 of the bridge inspection facility that is the bridge inspection facility, the magnet module can be easily operated without any difficulty of the operator. Permanent magnet 70 through the rotational movement is possible to adjust the strength of the magnetic force is configured so that the operator can accurately and conveniently adjust the binding position of the fixed support 40 without difficulty.

3A and 3B and as shown in FIGS. 4 to 6, when the concrete is poured in the pier 10, the permanent magnet 70 is attached and fixed to the steel formwork 30 so as to be positioned inside the pier 10. At the same time, the support body main body 42 is formed with a single or a plurality of magnet module chambers 44 whose outer side is opened and the inner side protrudes and seals toward the pier 10.

The support body 42 has a plurality of permanent magnets 70 protruding toward the pier 10 before the concrete is placed, the inner side of the magnet module chamber 44 to which the magnetic fixing plate 60 is assembled to exert magnetic force. It is formed or integrally structured through separate screwing.

In particular, the center rotation shaft inside the magnet module chamber 44 through the rotation operation of the module rotation bolt 80 located inside the pier 10 side of the magnet module chamber 44 when adjusting the attachment position to the steel formwork 30 As the permanent magnet 70 of the magnet fixing plate is moved and controlled along with the rotation control plate 50 which is moved along the 56, the magnetic force between the permanent magnets 70 with respect to the steel formwork 30 can be adjusted. do.

That is, as shown in the use state diagram of Figure 8, by rotating the module rotation bolt 80 with respect to the central rotation shaft 56 of the magnet module chamber 44, which is a magnetization module, the rotation control plate 50 through the central rotation shaft 56 The permanent magnet 70 of the magnet fixing plate 60, which is linked to and associated with it, is moved and controlled. At this time, the permanent magnet 70 of the magnetization module through the rotation operation of the module rotating bolt 80 is centered on the support main body 42. When the distance from the iron formwork 30 is far away, the magnetic force level of the fixed support 40 for the iron formwork 30 is naturally reduced, and thus the worker can simply and without difficulty the iron formwork 30 Change to the mounting position of the fixed support 40 for adjustment can be changed to the reset position. And of course, after changing the resetting position, of course, the rotation operation of the module rotation bolt 80 is reversed so that the permanent magnet 70 of the magnetization module can be returned to the strong magnetic force level for the steel formwork 30 again. .

In addition, the magnet module chamber 44 is the inner side of the piers 10 so that the module rotation bolt 58 is fastened and rotated so that the rotation control plate 56 can be distanced in a rotational motion with the central rotation shaft 56 to be spaced apart. A bolt fastening hole 58 is formed at the center of the projecting part, and the module rotation bolt 80 is screwed into the shaft fastening groove 82 toward the rotation control plate 56 which is the outer side, and penetrates the center of the rotation control plate 56. The central rotation shaft 56 is screwed through the shaft fastening hole 52 is screwed, so that the rotation control plate 56 is in the internal space of the magnet module chamber 44 and the central rotation shaft 56 and the module rotation bolt ( 58, it is a fastening structure through screwing and can be detachably fastened without detachment.

In addition, a plurality of magnet binding grooves 62 are formed with grooves while being screwed to the outside of the rotation control plate 50, and thus, a plurality of permanent magnets 70 exerting strong magnetic force are screwed into the magnet binding grooves 62, respectively. The fixed magnetic plate 60 is configured, the permanent magnet 70 is securely fixed to the corresponding magnetic binding groove 62 by a separate fixing screw 72, the permanent magnet 70 is a strong magnetic force It is preferable to be configured by applying a neodymium (ND) magnet to exert.

In addition, the magnet fixing plate 60 is also stably fixed and fixed through a separate fixing screw 66 with respect to the rotation control plate 50, and the rotation screw 50 also has a fixing screw 65 of the magnet fixing plate 60. The screw holes 54 are formed to be screwed in.

In addition, the magnet fixing plate 60 in which the permanent magnet 70 is installed in the endurance space of the magnet module chamber 44 protruding inward to the pier 10 and the module rotating bolt 80 toward the pier 10 are rotated. The distance control plate 50 can be integrally structured with the bar, which means that the rotation control plate 50 and the magnet fixing plate 60 through the rotation operation of the module rotation bolt 80 as a unitary structure of the magnet module chamber (44) The magnetic force of the fixed support 40 for the iron formwork 30 can be conveniently adjusted to the distance while moving away from the internal space.

In addition, as shown in the construction structure of Figure 2, the bolt means for bolting the fixing bracket 22, which is the end of the scaffold support 20 to the corresponding bolt fastening hole 48 of the support body 42 during the bridge inspection stand installation work While being fastened, bolt coupling rods protruding into the pier 10 at the position of the bolt fastening hole 48 penetrated through the support main body 42 so as to be firmly fixed to the pier 10 cured during concrete pouring. ) Is configured.

The bolt coupling rod 46 is fastened to the locking washer 86 and the locking bolt 84 to be firmly fixed to the interior of the pier 10 when the steel formwork 30 is removed from the pier 10 cured after concrete casting. Or, a separate locking projection 88 is configured to protrude in an integral structure Of course, the bolt coupling rod 46 is in the form of an inner penetrated rod both on the outer side of the support main body 42 and the inner pier 10 side. It is preferable to be screwed on, and of course, the inner end of the bolt coupling rod 46 is welded to the corresponding bolt fastening hole 48 of the support base body 42, or is integrally structured by a separate bolt coupling or the like.

For reference, as shown in Figure 7a and 7b, the embedded removable fixed support device for the bridge inspection facility of the present invention can be applied to the structure application of the magnet module chamber in a plurality of three or one single to the support body of the fixed support. Of course, the bolt coupling rod together with the magnet module chamber can also be configured as one single or three or more.

Meanwhile, the fixed support 40, which is a buried rotary detachable fixed support device of the present invention having such a configuration, is a pre-filled type before the concrete pouring of the piers 10 which is carried out before the binding fixing operation with the bridge inspection stand which is the bridge safety inspection passage. Attachment fixing operation through the magnetic force to the iron formwork 30 can be easily carried out.

In particular, the fixed support 40 of the present invention, which is fixed to the steel formwork 30 during the concrete pouring work of the bridge 10, changes the attachment position with the steel formwork 30 according to the binding position of the bridge checker as a bridge inspection facility If necessary, it is possible to adjust the strength of the magnetic force through the rotational movement of the magnet module including the permanent magnet 70 through the rotation operation of the module rotating bolt 80 can be easily operated without any difficulty of the operator, The buried type rotary detachable fixed support device construction method according to the present invention of a completely new construction structure that can adjust the binding position of the fixed support 40 accurately and conveniently without difficulty can be implemented.

That is, the step of attaching the support base body 42 of the fixed support 40 toward the pier 10, which is basically inside the steel formwork 30 before the concrete is poured. This is a fixed support 40 according to the present invention is magnetically attached to the inside of the steel formwork (30) that is the guide plate of the formation of the bridge 10, while the concrete is being cured, the bridge is a simple and pre-filled bridge 10 At the same time, the member can be securely maintained with the structurally stable pier 10 by the bolt coupling rods 46 protruding inside the support body 42.

In addition, before the concrete pouring operation, when the adjustment position of the fixing support 40 to the steel formwork 30 is adjusted, the rotation operation of the module rotation bolt 80 located inside the pier 10 side of the magnet module chamber 44 The permanent magnet 70 of the magnet fixing plate 60 is moved and controlled along with the rotation control plate 50 which is moved along the central rotation shaft 56 inside the magnet module chamber 44 through the iron formwork 40. By adjusting the degree of magnetic force between the permanent magnet 70 of the magnet module chamber 44 for a convenient step of adjusting the attachment position of the fixed support 40 can be carried out.

In particular, after the attachment position of the fixed support 40 to the steel formwork 30 is determined and the bridge 10 is formed by concrete curing of the bridge 10, the steel formwork 30 is removed from the bridge 10. By separating the central rotation shaft 56 bolted to the module rotation bolt 80 toward the pier 10 on the outside of the magnet module chamber 44 around the support base body 42, the magnet module chamber ( 44) A step may be implemented to conveniently separate the magnet module of the permanent magnet 70 including these magnet fixing plate 60 and rotation control plate 50 from the inner space.

In addition, in the construction method through the embedded removable fixed support device of the present invention, after removing the steel formwork 30 after curing the concrete of the bridge 10, the fixing bracket 22 which is the end of the scaffold support 20 during the bridge inspection stand installation work ) Before the bolt coupling, the space is sealed with a separate sealing cover 92 to the inner space in which the magnet fixing plate 60 and the rotation control plate 50, which is a magnet module, are separated from the magnet module chamber 44, and the scaffold support ( Bolting the fixing bracket 22 of 20) can be carried out.

This is a fixed role in a state in which the fixed support 40 is attached to the iron plate formwork 30 through the central rotation shaft 56 of the magnetization module connected by screwing to the module rotation bolt 80 exposed to the outside of the magnet module chamber 44. After removing the steel formwork (30) after the concrete pouring, and before the installation of the fixed support 40 of the present invention by releasing the central rotating shaft 56, the magnet together with the rotation fixing plate 50 from the inner space of the magnet module chamber 44 The magnetization module of the fixed plate 60 can be easily recovered without any difficulty, so it can be expected not only to reduce the construction cost but also to the effect of resource recycling.

10: pier 12: anchor bolt
20: scaffold support 22: fixing bracket
24: scaffolding 26: holding railing
30: steel formwork 40: fixed support
42: support body 44: magnet module chamber
46: bolt coupling rod 48: bolt fastener
50: rotation control plate 52: shaft fastening
54: fixing screw 56: center rotation shaft
58: bolt fastening 60: magnet fixing plate
62: magnet binding groove 64: shaft through hole
66: fixed plate fixing screw 70: permanent magnet
72: magnet fixing screw 74: chamber fixing screw
80: module rotation bolt 82: shaft fastening groove
84: locking bolt 86: locking washer
88: locking projection 90: support fixing bolt
92: sealing cover

Claims (6)

Supporting main body formed with a single or multiple magnetic module chambers, the outer side is opened and the inner side is protruded and sealed toward the pier while being fixed inside the pier by being fixed to the steel formwork when the concrete is poured in the piers;
Inserted from the outside open to the magnet module chamber and the central rotation shaft is coupled to the outside through the shaft fastening hole in the center and the module rotation bolt is fastened from the opposite pier side and with the central rotation shaft during the rotation operation of the module rotation bolt The rotation control plate and the space moving while moving back and forth,
A magnet fixing plate in which a plurality of magnet binding grooves are screwed to the outside of the rotation control plate, and a plurality of permanent magnets each having a strong magnetic force are screwed into the magnet binding grooves.
As the bolt means for bolting the fixing bracket, which is the end of the scaffold support, is firmly fixed to the bridge piers cured during concrete placing, the bolt checker penetrates to the inside of the pier. A buried type rotary detachable fixed support device for a bridge inspection facility, characterized in that a fixed support is attached to a steel formwork by including a protruding bolt coupling rod as a basis. The method according to claim 1,
The support main body is formed integrally with the inner part of the magnet module chamber protruding toward the pier before concrete placement or integrally structured by a separate screw coupling, and the module located inside the pier side of the magnet module chamber when the attachment position is adjusted to the steel formwork. Bridge inspection, characterized in that configured to be able to adjust the magnetic force between the permanent magnets for the steel formwork while the permanent magnet of the magnetic fixing plate is moved and controlled along with the rotation control plate is moved along the central rotation axis through the rotation operation of the rotating bolt Landfill rotary detachable fixed support for facility. The method according to claim 1,
The magnet fixing plate has a plurality of permanent magnets are screwed into the corresponding magnet binding groove and integrally structured by screwing with the rotation control plate bolted to the module rotation bolt and bolted to remove the steel formwork after curing the concrete of the bridge. An embedded removable fixed support device for a bridge inspection facility, characterized in that the magnetic fixing plate and the rotation control plate can be separated from the internal space of the magnet module chamber by separating the central rotating shaft bolted to the module rotating bolt. The method according to claim 1,
The bolt coupling rod checks the bridge, characterized in that the locking washer and the locking bolt is fastened or a separate locking protrusion is projected to be integrally structured so as to be firmly fixed to the inside of the pier when removing the steel formwork from the bridge pier after the concrete casting Landfill rotary detachable fixed support for facility. Attaching the support body of the fixed support to the pier to the inner side of the steel formwork before the concrete is poured in the pier;
The permanent magnet of the magnet fixing plate is moved together with the rotation control plate which is moved along the central rotation axis inside the magnet module chamber through the rotation operation of the module rotation bolt located inside the pier of the magnet module chamber when adjusting the attachment position of the steel formwork. Adjusting the attachment position of the fixed support conveniently by adjusting the degree of magnetic force between the permanent magnets to the steel formwork;
After fixing the steel formwork after removing the steel formwork after concrete curing of the bridge, after removing the steel formwork, the magnet fixing plate and the rotating control plate were removed from the internal space of the magnet module chamber by separating the central rotating shaft bolted to the module rotating bolt. Construction method of a buried rotary detachable fixed support device for a bridge inspection facility, characterized in that the construction comprising a step that can be conveniently separated. The method according to claim 5,
After removing the steel formwork after the concrete curing of the bridge, before fixing bolts to the fixed bracket, which is the end of the scaffold support during the bridge inspection work, the magnetic fixing plate and the rotation control plate are separated from the magnet module chamber. Sealing and bolting the fixing bracket of the scaffold support further comprises a method of construction of a buried rotary detachable fixed support device for a bridge inspection facility.

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