CN116591499A - Correction and repair device and method for deformed wall of historic building - Google Patents

Correction and repair device and method for deformed wall of historic building Download PDF

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Publication number
CN116591499A
CN116591499A CN202310623764.5A CN202310623764A CN116591499A CN 116591499 A CN116591499 A CN 116591499A CN 202310623764 A CN202310623764 A CN 202310623764A CN 116591499 A CN116591499 A CN 116591499A
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China
Prior art keywords
wall body
plate
rod
frame
push plate
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Granted
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CN202310623764.5A
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Chinese (zh)
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CN116591499B (en
Inventor
李合强
肖磊
宋公博
刘肖彤
李文博
曹芳
陶佳
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Henan Shangdu Ancient Construction Engineering Co ltd
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Henan Shangdu Ancient Construction Engineering Co ltd
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Priority to CN202310623764.5A priority Critical patent/CN116591499B/en
Publication of CN116591499A publication Critical patent/CN116591499A/en
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Publication of CN116591499B publication Critical patent/CN116591499B/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/26Strutting means for wall parts; Supports or the like, e.g. for holding in position prefabricated walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0229Increasing or restoring the load-bearing capacity of building construction elements of foundations or foundation walls

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The application relates to the technical field of correction and repair of historic building of cultural relics, in particular to a correction and repair device and a correction and repair method of a deformed wall of a historic building of cultural relics. Through the setting of room body structure and restoration processing structure, realize the restoration purpose of ancient building deformation wall body.

Description

Correction and repair device and method for deformed wall of historic building
Technical Field
The application relates to the technical field of correction and repair of historic buildings of cultural relics, in particular to a correction and repair device and method for a deformed wall of a historic building of a cultural relic.
Background
In China, many ancient towns and most metropolitan areas also retain some ancient architecture. However, in the present day of Daxing civil engineering, we want to see and protect ancient architecture and its inherent cultural characteristics with the developed eye light; the method can save ancient building culture and generate modern value for ancient cultural heritage.
Chinese patent publication No. CN100480483C discloses a method for correcting deformed wall of ancient architecture, which does not damage wall decoration during correction. The correcting method comprises the following steps: setting supports on two sides of the inclined or sunken wall body; firstly, setting up a row of vertical limiting brackets on the outer inclined inner side of the wall body and/or the outer convex inner side of the wall body so as to establish a vertical reference surface of the wall body; setting up a row of correction brackets on the wall body camber surface and/or the wall body outer camber surface to correct the wall body; small green iron sheets are inserted into cracks of the wall body to be tightly pressed and mortar is poured into the cracks; finally, the vertical limiting support, the correcting support and the support are detached, but the scheme is unfavorable for the cooperative processing function and needs to be controlled independently.
Chinese patent publication No. CN209457425U discloses a support is restoreed to ancient building wall body, relates to ancient building restoration technical field, and its technical scheme main points are including the base and set firmly the support frame on the base, the support frame is kept away from the one end of base and can is dismantled and be connected with a plurality of auxiliary support beams, forms the interval that is used for holding the wall body between auxiliary support beam and the support frame. The application solves the problem that the structural stability is affected by removing the original brick when the prior ancient building wall body is repaired, and can be removed and replaced under the condition of keeping the original structural stability, so that the service life of the ancient building is prolonged, but the application can not effectively correct the wall body.
At present, the correction prosthetic devices of historical relic ancient building deformation wall body adopts the support to push-and-pull when using, realizes the correction processing of wall body mostly, but when concrete operation, the uneven condition of atress can appear, easily causes the secondary injury of wall body, when correcting ancient building wall body simultaneously, current device can't be according to the deformation area at wall body middle part find suitable supporting point and holding point, lead to when correcting the wall body, cause the secondary injury to the wall body, consequently need improve to this problem, above-mentioned problem needs an equipment to improve it.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a correction and repair device and method for a deformed wall of a historic building.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a correction prosthetic devices of historical relic ancient building deformation wall body, includes room body structure, room body structure includes the bottom plate, be equipped with the repair structure on the bottom plate, the repair structure includes motion control part and drive part;
the motion adjusting component comprises a first push plate and a second push plate, and the bottoms of the first push plate and the second push plate are respectively connected with the bottom plate through a sliding plate; a first connecting frame is arranged above one side of the first push plate, which is close to the driving part, a baffle is arranged between the two first connecting frames, a butt joint frame is arranged below one side of the first push plate, which is close to the driving part, a rotating ring is arranged on the butt joint frame, the first connecting frames are hinged with the rotating ring through a first telescopic rod, a telescopic hinging rod is arranged on the rotating ring, and the other end of the telescopic hinging rod is connected with a transmission assembly;
a second connecting frame is arranged above one side of the second push plate, which is close to the driving part, a limiting plate is arranged between the two second connecting frames, a second telescopic rod is arranged on the second connecting frame, one end of the second telescopic rod, which is far away from the second connecting frame, is connected with the transmission assembly, an elastic damping rod is arranged in the middle of the second telescopic rod, and the other end of the elastic damping rod is hinged with the lower end of the second push plate;
according to the application, the first pushing plate and the second pushing plate are driven by the driven fluted disc to move in opposite directions, and the wall body is effectively clamped and simultaneously the wall body protruding from the middle part or the wall body inclining to one side is corrected by the baffle plate and the limiting plate arranged on the first pushing plate and the second pushing plate.
Preferably, a plurality of support columns and walls are arranged on the periphery of the top of the bottom plate in an array mode, a main column is arranged in the middle of the top of the bottom plate, a beam body is arranged at the upper end of the main column, the beam body is respectively connected with the tops of each support column and each wall, eave is arranged at the top of the main column, and two ends of the eave are respectively connected with the beam body.
Preferably, the first push plate and the second push plate are of a 'back' structure, the first connecting frame and the second connecting frame are respectively provided with a locking component, the locking components are used for controlling the sliding and fixing of the connecting frame and the push plate, one side, close to the wall, of the baffle plate and the limiting plate is provided with a pressure sensor, and the pressure sensor is used for detecting the pressure value of the baffle plate and the limiting plate to the wall.
Preferably, the transmission assembly comprises a limit seat frame, the limit assembly is connected with a sliding plate positioned at the bottom of the second push plate, the limit seat frame is connected with the two driven fluted discs through a rotating connecting rod, the two driven fluted discs are symmetrically arranged on the rotating connecting rod, one end of each driven fluted disc, which is far away from each other, is provided with a mounting disc frame, each mounting disc frame is connected with a telescopic hinge rod and a second telescopic rod, the telescopic hinge rod is positioned at the lower part of the mounting disc frame, and the second telescopic rod is positioned at the upper part of the mounting disc frame.
Preferably, the driving component comprises an additional combined frame, the additional combined frame is fixedly connected with one end of the limiting seat frame, a driving seat is arranged on the additional combined frame, the driving seat is connected with a driving fluted disc in a driving mode, and the driving fluted disc is meshed with two driven fluted discs at the same time.
Preferably, the motion adjusting component further comprises a built-in rod, the first pushing plate and the second pushing plate are connected through the built-in rod, fastening bolts are arranged at two side ends of the built-in rod, and the first pushing plate and the second pushing plate clamp the wall through the built-in rod.
Preferably, the wall body is further provided with a second protection seat, the second protection seat is connected with a first protection seat and a mounting positioning seat in a threaded manner, and the second protection seat is used for contact protection of the corner position of the wall body through the first protection seat and the mounting positioning seat.
Preferably, the bottom of the first pushing plate and the bottom of the second pushing plate are respectively provided with an electromagnetic sliding block, the first pushing plate and the second pushing plate are respectively connected with the sliding plate in a sliding mode through the electromagnetic sliding blocks, one sides, close to the wall, of the first pushing plate and the second pushing plate are respectively provided with a pressure sensor, and the pressure sensors are used for detecting the pressure value of the pushing plate to the wall.
Preferably, the upper end and the lower end of one side end face of the mounting plate frame are respectively provided with a fixing rod, the telescopic hinging rod and the second telescopic rod are respectively sleeved on the fixing rods, the telescopic hinging rod and the second telescopic rod are both rotationally connected with the fixing rods, and the heights of the fixing rods are different.
The application method of the correction and repair device for the historic building deformed wall body comprises the following steps:
s1, a connecting hole is formed in the wall body, the built-in rod is inserted into the connecting hole, the first push plate and the second push plate are placed at two ends of the wall body, and the first push plate and the second push plate are connected through the built-in rod, so that butt joint of the house body structure and the repairing structure is completed;
s2, connecting one ends of the second telescopic rod and the telescopic hinging rod with the mounting disc frame to finish the connection of the transmission assembly with the first push plate and the second push plate;
s3, fixedly connecting the additional combination frame with the side part of the limit seat frame, and butting and combining the driving part and the motion adjusting part to enable the driven fluted disc and the driving fluted disc to be meshed with each other;
s4, driving fluted disc is driven to rotate through the driving seat, the driven fluted disc drives the installation tray frame to rotate, the installation tray frame drives the first push plate and the second push plate to move towards the wall body through the second telescopic rod and the telescopic hinging rod, and the wall body is corrected
The application has the beneficial effects that:
1. according to the application, through the structural arrangement of the mounting mechanism, the trimming treatment of the wall body can be performed, the first push plate and the second push plate are in joint connection with the wall body, the first push plate and the second push plate are uniformly stressed, the wall body is subjected to straightening treatment, the first push plate is connected through the first connecting frame, the first connecting frame is uniformly stressed through the first telescopic rod and the first pair of connecting frames, the adjustment in one direction is realized, the second push plate is connected through the second pair of connecting frames, and the elastic damping rod and the second telescopic rod are arranged, so that the second push plate is subjected to the action of the other direction, the symmetrical adjustment treatment work is realized, and the repairing effect is improved.
2. According to the application, through the structural arrangement of the driving part, the additional combined frame is used for assisting in limiting connection of the driving fluted disc and the driving seat, the driving fluted disc can rotate to drive the driven fluted disc to carry out driven adjustment, and the driven fluted disc can drive the rotating connecting rod and the mounting disc frame to carry out rotation adjustment in a following way when rotating, so that the driving adjustment functions of the first telescopic rod and the second telescopic rod are realized, and meanwhile, the tooth shapes on the driven fluted disc and the driving fluted disc are obliquely arranged, so that non-return treatment is effectively carried out, and meanwhile, the stress intensity is improved.
Drawings
The application will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a front perspective view of a main body of the present application;
FIG. 2 is a schematic view of a front perspective view of a house structure according to the present application;
FIG. 3 is a schematic view of a front perspective view of a repair structure according to the present application;
FIG. 4 is a schematic view of a front perspective view of a motion adjustment member according to the present application;
FIG. 5 is a front perspective view of the mounting mechanism of the present application;
FIG. 6 is a schematic view of a front perspective of the pushing mechanism of the present application;
FIG. 7 is a schematic view of a front perspective of a driving member of the present application;
FIG. 8 is a schematic front perspective view of a second embodiment of a body according to the present application;
FIG. 9 is a schematic view of a second pusher plate attachment configuration of the present application;
fig. 10 is a schematic view of a first push plate connection structure according to the present application.
In the figure: 1. a house structure; 2. a bottom plate; 3. a support column; 4. a wall body; 5. a main column; 6. a beam body; 7. eave; 8. repairing the processing structure; 9. a movement adjusting part; 10. a driving part; 11. a first push plate; 12. a first connection frame; 13. a butt joint frame; 14. a first telescopic rod; 15. a telescopic hinge rod; 16. a baffle; 17. a second push plate; 18. a second connecting frame; 19. a limiting plate; 20. a second telescopic rod; 21. an elastic damping rod; 22. a limit seat frame; 23. rotating the connecting rod; 24. a driven fluted disc; 25. mounting a tray frame; 26. attaching a combined frame; 27. a driving seat; 28. a driving fluted disc; 29. a built-in rod; 30. a fastening bolt; 31. a first protection seat; 32. installing a positioning seat; 33. and a second protection seat.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The application is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-7, the correction and repair device and method for the historic building deformed wall body of the cultural relics comprise a house body structure 1, wherein the house body structure 1 comprises a bottom plate 2, a repair processing structure 8 is arranged on the bottom plate 2, the side ends of the house body structure 1 are in limit connection through the repair processing structure 8, and the repair and correction processing of the house body structure 1 is carried out through the repair processing structure 8.
The house structure 1 can carry and support, and the repair processing structure 8 is arranged at two sides of the house structure 1.
The repair processing structure 8 can perform correction processing inside the house body structure 1, can improve the building life of the house body structure 1, and the repair processing structure 8 can uniformly apply stress, so that the house body structure 1 can be subjected to more stable adjustment processing.
As shown in fig. 2, the house structure 1 includes a bottom plate 2, a plurality of support columns 3 and walls 4 are arranged around the top of the bottom plate 2 in an array manner, a main column 5 is arranged in the middle of the top of the bottom plate 2, a beam body 6 is arranged at the upper end of the main column 5, the beam body 6 is respectively connected with the tops of each support column 3 and each wall 4, an eave 7 is arranged at the top of the main column 5, two ends of the eave 7 are respectively connected with the beam body 6, and the bottom plate 2, the support columns 3, the walls 4, the main column 5, the beam body 6 and the eave 7 are combined to form the house structure 1 to help to carry and support.
As shown in fig. 3, the repairing structure 8 includes a motion adjusting component 9 and a driving component 10, the driving component 10 drives the motion adjusting component 9 to operate, so as to realize driving adjustment of the motion adjusting component 9, and the driving component 10 can drive to drive the motion adjusting component 9 to follow the adjustment.
As shown in fig. 4, the motion adjusting component 9 is provided with a transmission component, the transmission component is hinged with the motion adjusting component 9, and the motion adjusting component 9 is driven to adjust by the transmission of the transmission component, so that the wall 4 is corrected by the motion of the motion adjusting component 9.
As shown in fig. 5, the movement adjusting part 9 comprises a first push plate 11 and a second push plate 17, and the bottoms of the first push plate 11 and the second push plate 17 are respectively connected with the bottom plate 2 through sliding plates; the first push plate 11 is close to one side top of drive part 10 and is equipped with first link frame 12, and one side below that first push plate 11 is close to drive part 10 is equipped with butt joint frame 13, is equipped with the swivel becket on the butt joint frame 13, articulates through first telescopic link 14 between first link frame 12 and the swivel becket, is equipped with flexible articulated link 15 on the swivel becket, and flexible articulated link 15's the other end is connected with drive assembly for first link frame 12 evenly atress drives first push plate 11 motion.
The second push plate 17 is close to one side top of drive part 10 and is equipped with second link 18, be equipped with second telescopic link 20 on the second link 18, the one end that second telescopic link 20 kept away from second link 18 is connected with drive assembly, second telescopic link 20 middle part is equipped with elastic damping pole 21, the other end and the lower extreme of second push plate 17 of elastic damping pole 21 are articulated, second telescopic link 20 is on second push plate 17 through second link 18 and elastic damping pole 21 effect simultaneously, change the position of second push plate 17, thereby drive wall body 4 through binding bolt 30, built-in pole 29, first push plate 11, second push plate 17 and carry out the operation regulation.
The motion adjusting part 9 further comprises a built-in rod 29, the first push plate 11 and the second push plate 17 are connected through the built-in rod 29, fastening bolts 30 are arranged at the end parts of the two sides of the built-in rod 29, the first push plate 11 and the second push plate 17 clamp the wall 4 through the built-in rod 29, and the fastening bolts 30 can be used for limiting connection of the side parts of the built-in rod 29.
As shown in fig. 6, the transmission assembly includes a spacing seat frame 22, the spacing seat frame 22 is connected with a slide plate located at the bottom of the second push plate 17, two spacing seat frames 22 are connected through a rotation connecting rod 23, two driven fluted discs 24 are symmetrically arranged on the rotation connecting rod 23, one end of each driven fluted disc 24, which is far away from each other, is provided with a mounting disc frame 25, each mounting disc frame 25 is connected with a telescopic hinge rod 15 and a second telescopic rod 20, the telescopic hinge rod 15 is located at the lower part of the mounting disc frame 25, the second telescopic rod 20 is located at the upper part of the mounting disc frame 25, the rotation connecting rod 23 is spacing on the spacing seat frame 22, and the rotation connecting rod 23 can follow the mounting disc frame 25 and the driven fluted discs 24 to carry out position adjustment treatment.
As shown in fig. 7, the driving component 10 includes an additional combined frame 26, the additional combined frame 26 is fixedly connected with one end of the limiting seat frame 22, the additional combined frame 26 is provided with a driving seat 27, the driving seat 27 is in driving connection with a driving fluted disc 28, the driving fluted disc 28 is meshed with two driven fluted discs 24 at the same time, the additional combined frame 26 plays a supporting role, and the driving fluted disc 28 and the driving seat 27 can rotate to realize power supply work.
The built-in rod 29 is communicated with the wall body 4, and the first pushing plate 11 and the second pushing plate 17 are attached to the wall body 4.
As shown in fig. 8, the wall 4 is further provided with a second protection seat 33, the second protection seat 33 is connected with a first protection seat 31 and an installation positioning seat 32 in a threaded manner, the second protection seat 33 is used for contact protection of the corner position of the wall 4 through the first protection seat 31 and the installation positioning seat 32, the second protection seat 33 is connected to the wall 4, protection of the corner position of the upper end of the wall 4 can be performed through the first protection seat 31 and the installation positioning seat 32, protection of the upper portion of the wall 4 is improved, and protection connection work of an integral structure is realized when the wall 4 is adjusted.
The upper end and the lower end of one side end face of the mounting plate frame 25 are respectively provided with a fixed rod, the telescopic hinge rod 15 and the second telescopic rod 20 are respectively sleeved on the fixed rods, the telescopic hinge rod 15 and the second telescopic rod 20 are both rotationally connected with the fixed rods, and the heights of the two fixed rods are different.
When the house body structure 1 and the repairing structure 8 are integrally combined, the repairing structure 8 is connected to the wall body 4, small holes are formed in the wall body 4 in advance and used for mounting and connecting the built-in rods 29, and meanwhile, the built-in rods 29 can be subjected to repairing treatment through later grouting;
firstly, the house body structure 1 is integrally supported by a support column 3, a wall body 4, a bottom plate 2, a main column 5 and a beam body 6, and roof eave 7 protects the top to form a building body;
then, the driving part 10 and the motion adjusting part 9 are combined in a butt joint way, the additional combined frame 26 is fixedly connected with the side part of the limiting seat frame 22, the driving seat 27 can drive the driving fluted disc 28 to rotate, the connected driven fluted disc 24 is enabled to follow the motion adjusting, and when the driven fluted disc 24 rotates, the mounting disc frame 25 can be driven to rotate and adjust;
afterwards, the second telescopic rod 20 and the first telescopic rod 14 are hinged to the mounting plate frame 25, the first telescopic rod 14 is driven to adjust through the rotation of the mounting plate frame 25, so that the first telescopic rod 14 drives the butt joint frame 13 to move and act on the first push plate 11, the first push plate 11 applies stress on the wall body 4 to push and pull one side of the wall body 4, meanwhile, the mounting plate frame 25 rotates to drive the second telescopic rod 20 to move, so that force is transferred to the second telescopic rod 20 through the elastic damping rod 21 and the second connecting frame 18 and acts on the upper end and the lower end of the second push plate 17, the second push plate 17 drives the wall body 4 to adjust, the wall body 4 is stressed, and the directions of the force applied by the first push plate 11 and the second push plate 17 are opposite, so that the wall body 4 can be uniformly stressed to adjust;
finally, the wall body 4 is adjusted to a proper position, then the repairing structure 8 is disassembled, the built-in rod 29 can be built in the wall body 4, subsequent grouting is performed, adjustment and fastening of the wall body 4 are achieved, and the work is completed.
Example two
The application method of the correction and repair device for the historic building deformed wall body comprises the following steps:
s1, a connecting hole is formed in a wall body 4, an embedded rod 29 is inserted into the connecting hole, a first push plate 11 and a second push plate 17 are placed at two ends of the wall body 4, the first push plate 11 and the second push plate 17 are connected through the embedded rod 29, and the butt joint of a house body structure 1 and a repairing structure 8 is completed.
S2, one ends of the second telescopic rod 20 and the telescopic hinging rod 15 are connected with the mounting disc frame 25, so that the transmission assembly is connected with the first push plate 11 and the second push plate 17.
S3, the additional combination frame 26 is fixedly connected with the side part of the limit seat frame 22, and the driving part 10 and the movement adjusting part 9 are in butt joint combination, so that the driven fluted disc 24 and the driving fluted disc 28 are meshed with each other.
S4, the driving fluted disc 28 is driven to rotate through the driving seat 27, the driven fluted disc 24 drives the mounting disc frame 25 to rotate, and the mounting disc frame 25 drives the first push plate 11 and the second push plate 17 to move towards the wall 4 through the second telescopic rod 20 and the telescopic hinging rod 15, so that the wall 4 is corrected.
Example III
In the practical use process, operators find that when the wall body 4 is repaired and corrected through the device, the first push plate 11 and the second push plate 17 arranged on two sides of the wall body 4 move towards the direction of the wall body 4 at the same time to correct the inclination of the wall body 4, if the first push plate 11 or the second push plate 17 firstly contacts with the bottom of the wall body 4 and continues to move towards the direction of the wall body 4 in the process, the whole wall body 4 is separated from the foundation, so that the wall body 4 collapses, and meanwhile, when the device is used for correcting the part protruding in the middle of the wall body 4, one side of the protruding wall body 4 cannot be effectively supported, the other side of the protruding push plate is only used for extruding the wall body 4, and therefore, the device is improved according to the method described by the embodiment, so that the technical problem is solved.
As shown in fig. 9-10, a baffle 16 is arranged between two first connecting frames 12, a limiting plate 19 is arranged between two second connecting frames 18, the first push plate 11 and the second push plate 17 are of a 'back' shape structure, locking components are arranged on the first connecting frames 12 and the second connecting frames 18 and used for controlling the sliding and fixing of the connecting frames and the push plate, a pressure sensor is arranged on one side, close to the wall body 4, of the baffle 16 and the limiting plate 19 and used for detecting the pressure value of the baffle 16 and the limiting plate 19 to the wall body 4, electromagnetic sliding blocks are arranged at the bottoms of the first push plate 11 and the second push plate 17, the first push plate 11 and the second push plate 17 are respectively connected with the sliding plates through the electromagnetic sliding blocks, and a pressure sensor is arranged on one side, close to the wall body 4, of the first push plate 11 and the second push plate 17 and used for detecting the pressure value of the push plate to the wall body 4.
Firstly, when the deformed wall 4 needs to be corrected by the device, the driving seat 27 is controlled to drive the driving fluted disc 28 to rotate, the driving fluted disc 28 simultaneously drives the two driven fluted discs 24 to simultaneously rotate anticlockwise, the driving fluted disc 24 drives the mounting disc frame 25 to rotate, and the mounting disc frame 25 simultaneously drives the telescopic hinge rod 15 and the second telescopic rod 20 to rotate by the fixing rod.
At this time, the telescopic hinged rod 15 moves towards the direction far away from the first push plate 11, and since the other end of the telescopic hinged rod 15 is connected with the butt joint frame 13 through the rotating ring, the telescopic hinged rod 15 drives the first push plate 11 to slide towards the direction of the wall body 4, and since the telescopic hinged rod 15 is rotationally connected with the fixed rod, the first push plate 11 only moves towards the direction of the wall body 4 and cannot rotate under the limitation of the sliding plate, and the top of the first push plate 11 is limited by controlling the locking of the first telescopic rod 14 under the state, so that the first push plate 11 is prevented from shifting in the moving process.
Meanwhile, the length of the second telescopic rod 20 is controlled to be locked, the second telescopic rod 20 moves towards the direction close to the first push plate 11 under the rotation of the driven fluted disc 24, the other end of the second telescopic rod 20 is connected with the second push plate 17 through the second connecting frame 18, the second telescopic rod 20 pushes the second push plate 17 to move towards the direction close to the wall 4, the bottom of the second push plate 17 is connected with the middle of the second telescopic rod 20 through the elastic damping rod 21, when the upper end of the second push plate 17 is pushed by the second telescopic rod 20 to move, the lower side of the second push plate 17 is synchronously pushed by the elastic damping rod 21 to move, so that the second push plate 17 is prevented from shifting in the moving process, the wall 4 is extruded and corrected through the first push plate 11 and the second push plate 17, and the problem that the first push plate 11 or the second push plate 17 cannot clamp the deformed wall 4 due to the fact that the stress is uneven is inclined after the first push plate 11 or the second push plate 17 contacts the deformed wall 4 is effectively solved.
Secondly, when correcting wall 4, if first push pedal 11 or second push pedal 17 earlier with the bottom contact of wall 4 after, carry out real-time supervision with the pressure value of push pedal 4 through the pressure sensor that sets up in two push pedals, if the pressure sensor that is located the first push pedal 11 of wall 4 both sides and second push pedal 17 bottom detects the pressure value simultaneously this moment, then judge that first push pedal 11 and second push pedal 17 simultaneously with the bottom contact of wall 4 this moment, the electromagnetic slide block start that is located the push pedal bottom makes the connection of two push pedals and slide change into fixed connection by sliding connection this moment, in this process, because initiative fluted disc 28 still drives driven fluted disc 24 and rotates, lock assembly unblock through control first link 12 and second link 18 makes first link 12 and second link 18 slide on two push pedals, under the state again, through control first telescopic link 14 shrink, because first telescopic link 14 one end and butt joint 13 rotate and are connected this moment, the other end articulates with first link 12, first link 14 will drive first link 12 down and carry out the motion to carry out the expansion joint 11 to the direction, thereby prevent that the problem that the expansion joint 4 is out the expansion joint is to the first side of the wall 4 from taking place, the problem of the extrusion deformation is carried out to wall 4 to the first side 4 to the detection of the side of wall 4, the time is prevented.
Simultaneously, the locking component on the second connecting frame 18 is controlled to unlock, in the state, the second push plate 17 is locked with the sliding plate under the magnetism of the electromagnetic sliding block, at the moment, the second telescopic rod 20 cannot push the second push plate 17 to move towards the wall body 4, and the other end of the second telescopic rod 20 still moves along with the rotation of the mounting disc frame 25, at the moment, the second telescopic rod 20 is controlled to shrink, so that the elastic damping rod 21 stretches, and meanwhile, the second connecting frame 18 is driven to slide towards the lower side of the second push plate 17 through the shrinkage of the second telescopic rod 20, so that whether the wall body 4 on one side of the second push plate 17 deforms or not is detected.
The baffle 16 and the limiting plate 19 are driven to slide on the first push plate 11 and the second push plate 17 through the first connecting frame 12 and the second connecting frame 18, and the baffle 16 and the limiting plate 19 slide up and down on the surface of the wall body 4 by changing the rotation direction of the driving fluted disc 28, so that whether deformation occurs on two sides of the wall body 4 is detected, dust on the wall body 4 is effectively cleaned, and constructors can repair the wall body 4 conveniently.
If the pressure value detected by the pressure sensor on the displacement baffle 16 or the limiting plate 19 is larger than the pressure value detected by the pressure sensor on the push plate, it is determined that the middle part of the wall body 4 protrudes to one side of the push plate at the moment, the movement process of the device is described by taking the pressure value detected by the pressure sensor on the baffle 16 as an example, because the pressure value larger than the pressure value detected by the pressure sensor on the push plate 4 is detected on the baffle 16, the magnetic sliding block on the first push plate 11 is controlled to unlock, the telescopic hinge rod 15 is controlled to extend or shorten according to the rotation direction of the mounting plate frame 25, the first push plate 11 is pushed to move in the direction far away from the wall body 4, the baffle 16 slides on the first push plate 11 by controlling the extension and shortening of the first telescopic rod 14, namely, the point farthest away from the wall body 4 in the protruding range of the wall body 4 is found out by controlling the pressure sensor on the baffle 16, the first telescopic rod 14 is locked, the baffle 16 stays at the maximum point of the protruding wall body 4, meanwhile, the first push plate 11 is driven by the rotation of the telescopic hinge rod 15 and the driven fluted disc 24 to drive the first push plate 4 to extend or contract in the direction, the direction of the second push plate 4 is controlled to collapse the second side of the wall body 4 is controlled to be uniform, and the second stress point 20 is prevented from directly contacting the wall body 4, and the two sides of the wall body 4 is prevented from being evenly stressed by the second stress point, and the problem is prevented from being evenly stressed by the second side, and the second stress point is prevented from being directly opposite the wall, and the problem.
The movement of the device will be described by taking the example that the pressure value detected by the pressure sensor on the limiting plate 19 is greater than the pressure value detected by the pressure sensor on the pushing plate, and the limiting plate 19 detects the pressure value greater than the pressure value of the pushing plate on the wall body 4, so that the magnetic sliding block on the second pushing plate 17 is controlled to unlock, at this time, the second connecting frame 18 and the second pushing plate 17 are locked, and the second telescopic rod 20 is controlled to extend or shorten according to the rotation direction of the mounting tray frame 25, so that the second pushing plate 17 is driven to move in the direction far away from the wall body 4, when the second pushing plate 17 is moved to a certain range, the second connecting frame 18 and the second pushing plate 17 are controlled to lock again, the maximum point of the protruding wall body 4 is found, and meanwhile, the movement amount of the first pushing plate 11 is controlled by adjusting the telescopic amount of the first telescopic rod 14, so that the other side of the wall body 4 is extruded, and the problem that the two sides of the wall body 4 are stressed unevenly is prevented, and the wall body 4 is directly collapsed is solved.
Finally, when the wall body 4 which is inclined to one side as a whole is corrected, the first push plate 11 and the second push plate 17 which are positioned at two sides of the wall body 4 are simultaneously moved to the direction of the wall body 4 by controlling the rotation of the driving fluted disc 28, when the pressure value is detected by the pressure sensors at the bottoms of the first push plate 11 and the second push plate 17, the contact between the first push plate 11 or the second push plate 17 and the bottom of the wall body 4 is judged at the moment, the electromagnetic slide block at the bottom of the push plate which is in contact with the wall body 4 is controlled to start to enable the push plate at the moment to be unable to move to the direction of the wall body 4 continuously, the limiting plate 19 or the baffle 16 at the moment is made to reciprocate up and down along the wall edge of the wall body 4 under the rotation of the driving fluted disc 28, and the inclination of the wall body 4 is judged to the side according to the pressure value detected by the pressure sensor on the limiting plate 19 or the baffle plate, if the pressure value detected by the pressure sensor at this point gradually increases, it is determined that the wall 4 is inclined to the side of the pressure sensor at this point, otherwise, it is determined that the wall 4 is inclined to the side away from the pressure sensor at this point, here, the wall 4 is inclined to the side of the first push plate 11 as an example, since the wall 4 is inclined to the side of the first push plate 11 as a whole, the pressure value detected by the pressure sensor at the baffle 16 gradually increases, when the range of the pressure value increase detected by the pressure sensor at the baffle 16 exceeds the preset range, the second push plate 17 is rapidly moved to the other side of the wall 4 by controlling the second telescopic rod 20, the wall 4 is clamped and locked, and simultaneously the limiting plate 19 slides on the wall 4 by controlling the extension and shortening of the second telescopic rod 20, so that the limiting plate 19 and the baffle 16 positioned at both sides of the wall 4 move up and down synchronously, thereby providing corresponding supporting force for the wall body 4 which is wholly inclined and correcting the wall body 4, thereby correcting the wall body 4 which is wholly inclined to one side.
It should be noted that, the present application drives the first pushing plate 11 and the second pushing plate 17 to move in opposite directions through the set of driven fluted discs 24, and corrects the wall 4 protruding from the middle or inclined to one side through the baffle 16 and the limiting plate 19 disposed on the first pushing plate 11 and the second pushing plate 17 while effectively clamping the wall 4.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a correction prosthetic devices of historical relic ancient building deformation wall body, includes room body structure, its characterized in that, room body structure includes the bottom plate, be equipped with the repair structure on the bottom plate, the repair structure includes motion regulation part and drive unit;
the motion adjusting component comprises a first push plate and a second push plate, and the bottoms of the first push plate and the second push plate are respectively connected with the bottom plate through a sliding plate; a first connecting frame is arranged above one side of the first push plate, which is close to the driving part, a baffle is arranged between the two first connecting frames, a butt joint frame is arranged below one side of the first push plate, which is close to the driving part, a rotating ring is arranged on the butt joint frame, the first connecting frames are hinged with the rotating ring through a first telescopic rod, a telescopic hinging rod is arranged on the rotating ring, and the other end of the telescopic hinging rod is connected with a transmission assembly;
the second push plate is close to one side top of drive part and is equipped with the second link, and two be equipped with the limiting plate between the second link, be equipped with the second telescopic link on the second link, the one end that the second link was kept away from to the second telescopic link is connected with drive assembly, second telescopic link middle part is equipped with the elasticity damping pole, the other end of elasticity damping pole is articulated with the lower extreme of second push plate.
2. The correcting and repairing device for the historic building deformation wall body of the cultural relics according to claim 1, wherein a plurality of support columns and the wall body are arranged on the periphery of the top of the base plate in an array mode, a main column is arranged in the middle of the top of the base plate, a beam body is arranged at the upper end of the main column, the beam body is respectively connected with the top of each support column and the top of the wall body, eaves are arranged at the tops of the main columns, and two ends of each eave are respectively connected with the beam body.
3. The correcting and repairing device for the historic building deformation wall body of the cultural relics according to claim 1, wherein the first pushing plate and the second pushing plate are of a 'back' shape, locking components are arranged on the first connecting frame and the second connecting frame and used for controlling sliding and fixing of the connecting frame and the pushing plate, a pressure sensor is arranged on one side, close to the wall body, of the baffle plate and the limiting plate, and the pressure sensor is used for detecting the pressure value of the baffle plate and the limiting plate to the wall body.
4. The correcting and repairing device for the historic building deformation wall body of the cultural relics according to claim 1, wherein the transmission assembly comprises a limiting seat frame, the limiting seat frame is connected with a sliding plate positioned at the bottom of the second pushing plate, the limiting seat frames are connected through a rotating connecting rod, two driven fluted discs are symmetrically arranged on the rotating connecting rod, one end, away from each other, of each driven fluted disc is provided with a mounting disc frame, each mounting disc frame is connected with a telescopic hinge rod and a second telescopic rod, the telescopic hinge rod is positioned at the lower part of the mounting disc frame, and the second telescopic rod is positioned at the upper part of the mounting disc frame.
5. The correcting and repairing device for the historic building deformation wall body of the cultural relics according to claim 1, wherein the driving component comprises an additional combined frame, the additional combined frame is fixedly connected with one end of the limiting seat frame, a driving seat is arranged on the additional combined frame, the driving seat is in driving connection with a driving fluted disc, and the driving fluted disc is meshed with two driven fluted discs simultaneously.
6. The correcting and repairing device for the historic building deformation wall body of the cultural relics according to claim 1, wherein the movement adjusting component further comprises a built-in rod, the first pushing plate and the second pushing plate are connected through the built-in rod, fastening bolts are arranged at the end parts of two sides of the built-in rod, and the first pushing plate and the second pushing plate clamp the wall body through the built-in rod.
7. The correcting and repairing device for the historic building deformed wall body of the cultural relics according to claim 1, wherein a second protection seat is further arranged on the wall body, a first protection seat and an installation positioning seat are connected to the second protection seat in a threaded mode, and the second protection seat is used for contact protection of the corner position of the wall body through the first protection seat and the installation positioning seat.
8. The correcting and repairing device for the historic building deformation wall body of the cultural relics according to claim 1, wherein electromagnetic sliding blocks are arranged at the bottoms of the first pushing plate and the second pushing plate, the first pushing plate and the second pushing plate are respectively connected with the sliding plates in a sliding mode through the electromagnetic sliding blocks, pressure sensors are arranged on one sides, close to the wall body, of the first pushing plate and the second pushing plate, and the pressure sensors are used for detecting the pressure value of the pushing plate to the wall body.
9. The correcting and repairing device for the historic building deformation wall body of claim 4, wherein the upper end and the lower end of one side end face of the mounting plate frame are respectively provided with a fixing rod, the telescopic hinging rod and the second telescopic rod are respectively sleeved on the fixing rods, the telescopic hinging rod and the second telescopic rod are both rotationally connected with the fixing rods, and the heights of the two fixing rods are different.
10. A method for using the correction and repair device for the historic building deformation wall body of a cultural relic, which is used for repairing the historic building deformation wall body of the cultural relic by adopting the correction and repair device for the historic building deformation wall body of the cultural relic according to any one of claims 1-9, and is characterized by comprising the following steps:
s1, a connecting hole is formed in the wall body, the first pushing plate and the second pushing plate are connected through a built-in rod, the built-in rod penetrates through the wall body connecting hole, the first pushing plate and the second pushing plate are placed at two ends of the wall body, the first pushing plate and the second pushing plate are connected through the built-in rod, and butt joint of the house body structure and the repairing structure is completed;
s2, connecting one ends of the second telescopic rod and the telescopic hinging rod with the mounting disc frame to finish the connection of the transmission assembly with the first push plate and the second push plate;
s3, fixedly connecting the limit seat frame with the side part of the additional combination frame, and butting and combining the driving part and the motion adjusting part to enable the driving fluted disc and the driven fluted disc contained in the driving part to be meshed with each other;
s4, driving fluted disc is driven to rotate through the driving seat, the driven fluted disc drives the installation tray frame to rotate, the installation tray frame drives the first push plate and the second push plate to move towards the wall body through the second telescopic rod and the telescopic hinging rod, and the wall body is corrected.
CN202310623764.5A 2023-05-30 2023-05-30 Correction and repair device and method for deformed wall of historic building Active CN116591499B (en)

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Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054856A (en) * 2007-05-22 2007-10-17 佛山市工程承包总公司 Rehabilitation method for ancient architecture wall
CN101054857A (en) * 2007-05-22 2007-10-17 佛山市工程承包总公司 Rectification method for ancient architecture deformed wall
JP2013083077A (en) * 2011-10-07 2013-05-09 Aoi Techno Service Kk Chemical injector for concrete cracking
DE202014002813U1 (en) * 2014-03-29 2014-04-29 Markus Rensburg Temporary wall support
KR20150055519A (en) * 2013-11-13 2015-05-21 최연수 Brick support apparatus and construction method of brick wall using the same
JP2017008618A (en) * 2015-06-24 2017-01-12 株式会社フジタ Repair method of concrete structure
KR101845199B1 (en) * 2017-08-16 2018-04-04 박진태 Restoration method for relocation and topography of building site remained
CN209457425U (en) * 2019-01-02 2019-10-01 北京擎屹古建筑有限公司 A kind of ancient architecture wall recovery support
KR102055603B1 (en) * 2019-07-11 2019-12-13 (주)옥련건설 Method and device for repair and strengthening the wall of concrete structures
CN210316658U (en) * 2019-06-14 2020-04-14 倪皓 Supporting device for repairing ancient buildings
CN112878733A (en) * 2021-01-11 2021-06-01 康建 A consolidate bearing structure for building engineering
CN215107577U (en) * 2020-12-11 2021-12-10 河北建筑工程学院 Ancient building wall body repair support
CN113931240A (en) * 2021-11-12 2022-01-14 龙德建设有限公司 Intelligent anti-tilt correcting device for basic brick wall of historical relic and ancient building and working method thereof
CN115613849A (en) * 2022-11-23 2023-01-17 福建省泉州市古建筑有限公司 Ancient building algae well repairing equipment and repairing construction method
WO2023284527A1 (en) * 2021-07-14 2023-01-19 张以红 Single-port wall crack intelligent grouting caulking machine and construction method
US20230043124A1 (en) * 2021-08-06 2023-02-09 Next Gear Solutions, LLC Managing restoration equipment operations and deployment

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054857A (en) * 2007-05-22 2007-10-17 佛山市工程承包总公司 Rectification method for ancient architecture deformed wall
CN101054856A (en) * 2007-05-22 2007-10-17 佛山市工程承包总公司 Rehabilitation method for ancient architecture wall
JP2013083077A (en) * 2011-10-07 2013-05-09 Aoi Techno Service Kk Chemical injector for concrete cracking
KR20150055519A (en) * 2013-11-13 2015-05-21 최연수 Brick support apparatus and construction method of brick wall using the same
DE202014002813U1 (en) * 2014-03-29 2014-04-29 Markus Rensburg Temporary wall support
JP2017008618A (en) * 2015-06-24 2017-01-12 株式会社フジタ Repair method of concrete structure
KR101845199B1 (en) * 2017-08-16 2018-04-04 박진태 Restoration method for relocation and topography of building site remained
CN209457425U (en) * 2019-01-02 2019-10-01 北京擎屹古建筑有限公司 A kind of ancient architecture wall recovery support
CN210316658U (en) * 2019-06-14 2020-04-14 倪皓 Supporting device for repairing ancient buildings
KR102055603B1 (en) * 2019-07-11 2019-12-13 (주)옥련건설 Method and device for repair and strengthening the wall of concrete structures
CN215107577U (en) * 2020-12-11 2021-12-10 河北建筑工程学院 Ancient building wall body repair support
CN112878733A (en) * 2021-01-11 2021-06-01 康建 A consolidate bearing structure for building engineering
WO2023284527A1 (en) * 2021-07-14 2023-01-19 张以红 Single-port wall crack intelligent grouting caulking machine and construction method
US20230043124A1 (en) * 2021-08-06 2023-02-09 Next Gear Solutions, LLC Managing restoration equipment operations and deployment
CN113931240A (en) * 2021-11-12 2022-01-14 龙德建设有限公司 Intelligent anti-tilt correcting device for basic brick wall of historical relic and ancient building and working method thereof
CN115613849A (en) * 2022-11-23 2023-01-17 福建省泉州市古建筑有限公司 Ancient building algae well repairing equipment and repairing construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王志阳;: "仿古建筑中现代幕墙技术和材料的应用――国家开发银行主要幕墙技术和材料的应用浅析", 门窗, no. 05 *

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