CN113863767B - Hydraulic die lifting device for chimney and construction method - Google Patents
Hydraulic die lifting device for chimney and construction method Download PDFInfo
- Publication number
- CN113863767B CN113863767B CN202111164909.7A CN202111164909A CN113863767B CN 113863767 B CN113863767 B CN 113863767B CN 202111164909 A CN202111164909 A CN 202111164909A CN 113863767 B CN113863767 B CN 113863767B
- Authority
- CN
- China
- Prior art keywords
- template
- chimney
- steel wire
- hydraulic
- wire ropes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
- E04H12/341—Arrangements for casting in situ concrete towers or the like
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/28—Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer and which are anchored in the hardened concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a hydraulic chimney lifting device and a construction method, wherein the hydraulic chimney lifting device comprises a chimney foundation, an operation platform, a plurality of groups of lifting devices and a control element, and each group of lifting devices is correspondingly provided with a template group; the hydraulic pump stations of each group of lifting devices are respectively connected with the control element; the working platform is fixedly connected with the hydraulic jack; the template group is arranged on the outer side of the chimney cylinder wall, and the outer side of the template group is fixedly connected with the operation platform. The invention has the advantages of simple structure and high construction efficiency, and can effectively control the diameter of the chimney.
Description
Technical Field
The invention relates to the technical field of chimney construction. More particularly, the invention relates to a hydraulic chimney die lifting device and a construction method.
Background
The chimney smoke exhaust is a smoke exhaust mode commonly used in domestic chemical industry and electric power industry, and the existing chimney can be roughly divided into three types: brick chimney, reinforced concrete chimney and steel chimney, wherein when the reinforced concrete chimney is built and constructed, traditional hydraulic inner and outer sliding forms are adopted: firstly, assembling and manufacturing a derrick, and then installing a construction platform, a hydraulic system, electric equipment, a safety net, a hanging cage and a sliding mode at certain intervals to form a cone chimney after the derrick is manufactured and installed in place. In the construction process, the inner and outer qualitative templates are difficult to control the diameter of a chimney and the wall thickness of the chimney, and the diameter of smoke flushes is gradually reduced from bottom to top, so that more pitted surfaces are formed in appearance, and secondary manual plastering is caused. And the crust is easy to fall off after long-term use, and the quality is seriously unsatisfied.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a hydraulic chimney lifting device comprising a chimney foundation, an operation platform, a plurality of groups of lifting devices and a control element, each group of lifting devices being correspondingly provided with a template group, characterized in that each group of lifting devices comprises a support bar with one end embedded in the chimney foundation, a hydraulic jack capable of climbing along the support bar, and a hydraulic pump station; the hydraulic pump stations of each group of lifting devices are respectively connected with the control element; the working platform is fixedly connected with the hydraulic jack; the template group is arranged on the outer side of the chimney cylinder wall, and the outer side of the template group is fixedly connected with the operation platform.
Preferably, the template group is formed by splicing a plurality of templates, any template is a trapezoid template, two adjacent templates are connected through a connecting plate, and a plurality of rows of bolt holes are formed in the connecting plate.
Preferably, the top ends of the hydraulic jacks in each group of lifting devices are provided with displacement measuring devices, and the displacement measuring devices comprise rollers and encoders; the periphery of the roller is abutted with the supporting rod, one end of the roller is coaxially connected with the rotating shaft of the encoder, and the encoder is connected with the control element.
Preferably, the working platform comprises a drum ring and a plurality of radiation beams uniformly distributed along the radial direction of the drum ring, one end of each radiation beam is fixedly connected with the drum ring, the other end of each radiation beam is fixedly connected with the hydraulic jack, and the bottom of each radiation beam is fixedly connected with the lower end of the drum ring through a plurality of lower pull rods; and a lifting derrick is connected above the drum ring through bolts.
The invention also aims to provide a construction method of the hydraulic chimney lifting device, which is characterized by comprising the following steps of:
step one, constructing a chimney foundation and installing the chimney hydraulic lifting die device;
step two, assembling a plurality of template groups to form an outer template and installing an inner template; binding reinforcing steel bars and building lining bricks;
pouring the chimney wall;
controlling hydraulic jacks in all lifting devices to climb synchronously after the concrete strength of the wall of the chimney meets the requirement, and driving the operation platform and the outer template to climb synchronously to the next operation height;
and fifthly, repeating the second step to the fourth step until the chimney is capped.
Preferably, the assembly of the outer template comprises wrapping a plurality of steel wire ropes outside a plurality of template groups, and each steel wire rope is provided with a wire tightening screw rod; the lower end of the outer template and the lap joint part of the chimney cylinder wall are wrapped with two lower steel wire ropes, the rest part of the outer template is uniformly wrapped with a plurality of upper steel wire ropes, and the distance between two adjacent upper steel wire ropes is 10-12 times of the distance between two lower steel wire ropes.
Preferably, after positioning in the upper port experience of the outer template, tightening an upper steel wire rope at the uppermost end, completely positioning and forming the upper port of the outer template, recording the corresponding retraction stroke L1 of the tightening screw, then uniformly tightening the rest upper steel wire ropes from top to bottom in a small amplitude, and recording the retraction strokes Ln' of the corresponding tightening screws; tightening the two lower steel wire ropes to enable the lower opening of the outer die plate to be completely positioned and molded, and recording the corresponding retraction stroke L2 of the tightening lead screw; calculating a stroke difference value L=L1-L2 to obtain the retracting strokes Ln=L/N of the remaining upper steel wire ropes, wherein N is the number of the remaining upper steel wire ropes, and sequentially adjusting the retracting strokes of the remaining steel wire ropes according to the value to enable Ln' =Ln, so that the whole outer template is positioned and molded.
Preferably, the inner template is a foam plastic plate, and the inner template and the outer template are fixed through split bolts.
Preferably, the binding steel bars comprise vertical steel bar binding and annular steel bar binding, wherein an annular steel bar is bound at the same height as the upper opening of the outer template, and a plurality of template limiting support plates are arranged at intervals along the circumferential direction of the annular steel bar; the limiting support plate comprises a screw, one end of the screw is fixedly connected with a fixed plate, and a movable plate and a connecting block are sequentially sleeved on the screw close to the fixed plate; the movable plate is connected with the fixed plate through bolts, so that the upper end of the outer template is just clamped between the movable plate and the fixed plate; the connecting block with screw threaded connection, set up on the connecting block with vertical reinforcing bar matched with draw-in groove.
Preferably, the control unit controls each hydraulic pump station to synchronously drive each hydraulic jack to climb, and monitors whether climbing travel and climbing rate of each hydraulic jack are consistent through the displacement measuring device.
The invention at least comprises the following beneficial effects:
1. according to the chimney hydraulic die lifting device provided by the invention, each group of the lifting devices is correspondingly provided with the die plate group, the die plate groups are fixedly connected with the operation platform, the hydraulic pump station in each group of the lifting devices is controlled by the control element to synchronously drive the hydraulic jacks to climb along the supporting rods, and the hydraulic jacks simultaneously drive the operation platform and the die plate groups to synchronously lift, so that lifting of lifting machinery is not required, and lifting workload of the lifting machinery in construction is reduced. And the diameter of the chimney is easier to control by forming the flexible and retractable outer template by each template group.
2. According to the construction method of the hydraulic mould lifting device for the chimney, when the inner and outer templates are installed on the operation platform, steel bar binding and lining brick masonry can be performed simultaneously, a scaffold is not required to be erected again to provide a construction platform for masonry, a large number of scaffolds and scaffold plates can be saved, and secondary operation is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic side view of a hydraulic lifting device according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a template set according to the above embodiment of the present invention;
FIG. 3 is a top view of the template set according to the above embodiment of the present invention;
fig. 4 is a schematic structural view of the formwork locating support according to the above embodiment of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 1 to 4, the invention provides a hydraulic chimney lifting device, which comprises a chimney foundation 3, an operation platform 1, a plurality of groups of lifting devices 2 and a control element, wherein each group of lifting devices 2 is correspondingly provided with a template group 4, and each group of lifting devices 2 comprises a supporting rod 21 with one end embedded in the chimney foundation 3, a hydraulic jack 22 capable of climbing along the supporting rod and a hydraulic pump station; the hydraulic pump stations of each group of lifting devices 2 are respectively connected with the control element; the working platform 1 is fixedly connected with the hydraulic jack 22; the template group 4 is arranged on the outer side of the chimney cylinder wall, and the outer side of the template group is fixedly connected with the operation platform 1.
In this technical scheme, the hydraulic jack 22 is a through hydraulic jack, one end of the supporting rod 21 is embedded in the poured chimney foundation 3, and the hydraulic jack 22 is sleeved on the supporting rod 21. The hydraulic pump stations in the lifting devices 2 are controlled by the control element to synchronously feed oil to the hydraulic jacks 22, so that the hydraulic jacks 22 climb along the supporting rods 21 and drive the working platform 1 and the template group 4 to move upwards. The control element can be a conventional PLC control unit, which starts an instruction to the electromagnetic valve in each hydraulic pump station, so as to realize synchronous and coordinated actions of a plurality of hydraulic jacks 22. Each group of lifting devices 2 is correspondingly provided with a template group 4, preferably, the template group is made of a thin steel plate, and a plurality of template groups 4 are spliced to form an outer template for pouring the chimney cylinder wall. Compared with the traditional construction process adopting qualitative steel templates, the flexible and retractable outer templates are formed by the template groups 4, so that the diameter of the chimney is easier to control, and the method is suitable for the construction of the conical chimney. The outer side of the template group 4 can be directly and fixedly connected with the operation platform 1 through a pull rod, so that synchronous lifting along with the operation platform 1 is realized.
In another embodiment, the template set 4 is formed by splicing a plurality of templates 41, any template 41 is a trapezoid template, two adjacent templates 41 are connected through a connecting plate 42, and a plurality of rows of bolt holes are formed in the connecting plate 42.
In this embodiment, the templates 41 are made of hot rolled thin plates, and a plurality of the templates 41 are assembled to form the template group 4 through the connecting plates 42. The templates 41 are trapezoidal, so that after forming the outer templates, a plurality of groups of template groups 4 can be conveniently collected according to the design diameter requirement, and a flexible and retractable outer template is formed. As shown in fig. 2 to 4, the connecting plate 42 is provided with a plurality of rows of bolt holes, each row includes two bolt holes, each bolt hole corresponds to one of the templates 41, and the two templates 41 are spliced together by bolting the connecting plate 42 to the two templates 41. Preferably, the connection plate 42 is an L-shaped plate, wherein a side parallel to the template 41 is used for connecting with the template 41, and a side perpendicular to the template 42 may be provided with a plurality of through holes at intervals. When a plurality of template groups 4 are spliced, the outside of the template groups is provided with a plurality of steel wire ropes, and the steel wire ropes can pass through the through holes on the connecting plates 42 to limit, so that the steel wire ropes are prevented from sliding up and down along the template surfaces, and the receiving precision is prevented from being influenced.
In another embodiment, the top ends of the hydraulic jacks 22 in each set of lifting devices 2 are provided with displacement measuring devices 23, the displacement measuring devices 23 comprising rollers and encoders; the periphery of the roller is abutted against the supporting rod 21, one end of the roller is coaxially connected with the rotating shaft of the encoder, and the encoder is connected with the control element.
In this technical solution, the outer periphery of the roller is abutted against the supporting rod 21, and when the hydraulic jack 22 climbs along the supporting rod 21, the roller rotates along with it and drives the rotating shaft of the encoder to rotate. The encoder transmits the measured data information to the control element, which calculates the climbing displacement and climbing rate of the hydraulic jack 22 in combination with the circumference of the roller. Therefore, the control element can monitor whether each hydraulic jack is abnormal in the process of lifting the die, and when the climbing displacement and speed of one or more hydraulic jacks 22 are obviously lower than those of the other hydraulic jacks 22, the control element can rapidly control each hydraulic pump station to stop oil supply, so that the reasons are analyzed in time, and larger losses are avoided.
In another embodiment, the working platform 1 includes a drum 14 and a plurality of radiation beams 12 uniformly distributed along the radial direction of the drum 14, one end of each radiation beam 12 is fixedly connected with the drum 14, the other end of each radiation beam 12 is fixedly connected with the hydraulic jack 22, and the bottom of each radiation beam 12 is fixedly connected with the lower end of the drum 14 through a plurality of lower pull rods 13; a lifting derrick 15 is connected above the drum through bolts.
In this solution, the drum 14, the radiation beam 12, the lower tie rod 13, and the derrick 15 are connected to form a whole, i.e. the working platform 1. The lifting devices 2 are uniformly arranged along the radial interval of the drum ring 14, so that the working platform 1 is fixedly connected with the corresponding hydraulic jack 22 through the radiation beam 12, and synchronous climbing along with the hydraulic jack 22 is realized. The working platform 1 is further provided with an outer hanging object derrick mast 16, one end of the outer hanging object derrick mast 16 is provided with a lifting hook, a lifting cage 11 is arranged in the lifting derrick 15, the lifting hook and the lifting cage 11 are respectively connected with a plurality of winches arranged on the field outside the chimney cylinder wall through steel wire ropes and pulley blocks to form an outer conveying system and an inner conveying system, and the winches can lift the lifting hook and the lifting cage 11 to convey construction materials, equipment and personnel. Correspondingly, a masonry platform and a formwork support platform are further arranged below the operation platform and are respectively used for masonry of the chimney lining bricks and installation of the templates, and the masonry platform and the formwork support platform can be built by adopting a plurality of radiation beams similar to the operation platform and are connected with the drum ring 14 and the radiation beams 12 of the operation platform 1 for fixing.
The invention also provides a construction method of the chimney hydraulic lifting die device, which comprises the following steps:
step one, constructing a chimney foundation 3, and installing the chimney hydraulic lifting die device;
step two, assembling a plurality of template groups 4 to form an outer template and installing an inner template; binding reinforcing steel bars and building lining bricks;
pouring the chimney wall;
step four, after the concrete strength of the chimney wall meets the requirement, controlling the hydraulic jacks 22 in each lifting device 2 to climb synchronously, and driving the operation platform and the outer template to climb synchronously to the next operation height;
and fifthly, repeating the second step to the fourth step until the chimney is capped.
In the technical scheme, the chimney hydraulic die lifting device is assembled according to a certain sequence in the first step, and the main installation sequence is as follows: drum positioning, radiation beam installation, lower pull rod installation, jack installation, ring beam installation, laying of a platform plate and a hanger plate, derrick installation, winch positioning, steel wire rope installation, hanging of a hanging cage installation and electric equipment installation, and hanging of a safety net. When the inner and outer templates are installed on the working platform 1, steel bar binding and lining brick masonry can be carried out simultaneously, and concrete pouring is carried out after the steps are finished to form the chimney cylinder wall. After the concrete strength meets the requirement, the hydraulic jacks 22 in the lifting devices 2 are controlled by the control element to climb synchronously, and the working platform 1 is driven to climb together, so that the construction can be performed simultaneously with the outer template and the inner template without setting up a scaffold again to provide a construction platform for masonry, and the construction can be performed from above the chimney foundation 3. Compared with the traditional construction process, which is all the front and back construction processes, the construction of the next construction process can be performed after the construction of the previous process is completed and acceptance inspection is completed, so that a large number of scaffolds and scaffold plates are saved, and secondary operations are reduced.
In another embodiment, the assembly of the outer template comprises wrapping a plurality of steel wire ropes outside a plurality of template groups 4, and each steel wire rope is provided with a wire tightening screw; the lower end of the outer template and the lap joint part of the chimney cylinder wall are wrapped with two lower steel wire ropes, the rest part of the outer template is uniformly wrapped with a plurality of upper steel wire ropes, and the distance between two adjacent upper steel wire ropes is 10-12 times of the distance between two lower steel wire ropes.
In the technical scheme, the lower edge of the outer template is overlapped with the concrete on the wall of the chimney by 50mm, and the overlapped part is arranged at the outer side of the outer template and is used for wrapping two lower steel wire ropes so as to ensure the positioning and fixing of the lower opening of the outer template. The distance between two adjacent upper steel wire ropes is 10-12 times of the distance between two lower steel wire ropes, and the distance between two adjacent upper steel wire ropes is reasonably set to ensure the retraction accuracy of the outer template, so that the overall retraction of the outer template is consistent with the design retraction of a chimney.
In another embodiment, after positioning in the upper mouth experience of the outer template, tightening the uppermost upper steel wire rope, completely positioning and forming the upper mouth of the outer template, recording the corresponding retraction stroke L1 of the tightening screw, then uniformly tightening the rest upper steel wire ropes from top to bottom in small amplitude, and recording the retraction strokes Ln' of the corresponding tightening screws; tightening the two lower steel wire ropes to enable the lower opening of the outer die plate to be completely positioned and molded, and recording the corresponding retraction stroke L2 of the tightening lead screw; calculating a stroke difference value L=L1-L2 to obtain the retracting strokes Ln=L/N of the remaining upper steel wire ropes, wherein N is the number of the remaining upper steel wire ropes, and sequentially adjusting the retracting strokes of the remaining steel wire ropes according to the value to enable Ln' =Ln, so that the whole outer template is positioned and molded.
In the technical scheme, a pull rule is adopted to perform middle-checking positioning on the upper opening of the outer template. After the upper opening of the outer template is completely positioned and molded, the rest of the upper steel wire ropes are sequentially and uniformly tightened from top to bottom in a small amplitude mode, so that the upper opening and the lower opening of the outer template are initially shaped, and then the lower opening of the outer template is completely positioned and molded. And fine adjustment is carried out on the rest of the upper steel wire ropes, so that the whole outer die plate is positioned and formed. And finally, retesting the shrinkage gradient of the outer template by using a line supporting plate, so as to ensure the flatness and the shrinkage of the outer template, and further ensure the casting molding quality of the concrete body. And after the strength of the concrete meets the requirement, loosening each steel wire rope and then lifting the die.
In another embodiment, the inner mold plate is a foam plastic plate, and the inner mold plate and the outer mold plate are fixed through split bolts.
In the technical scheme, the inner template adopts the foam plastic plate, the inner template is not required to be disassembled and lifted after concrete pouring is completed, and the foam plastic can be automatically melted under the action of high temperature, so that the inner template is automatically disassembled. The inner template is formed by splicing a plurality of sub-boards corresponding to the template groups 4, and each sub-board is fixed with one template group 4 through a split bolt.
In another embodiment, the binding steel bars comprise vertical steel bar binding and annular steel bar binding, wherein a circumferential steel bar is bound at the same height as the upper opening of the outer template, and a plurality of template limiting support plates are arranged at intervals along the circumferential direction of the annular steel bar; the limiting support plate comprises a screw rod 53, one end of the screw rod 53 is fixedly connected with a fixed plate 51, and a movable plate 52 and a connecting block 54 are sequentially sleeved on the screw rod 53 close to the fixed plate 51; the movable plate 52 is connected with the fixed plate 51 through bolts, so that the upper end of the outer template is just clamped between the movable plate and the fixed plate; the connecting block 54 is in threaded connection with the screw 53, and a clamping groove matched with the vertical reinforcing steel bar is formed in the connecting block 54.
In this technical solution, the distance between the movable plate 52 and the fixed plate 51 is adjusted so that both can just clamp the upper end of the outer form, and then the movable plate 52 and the fixed plate 51 are fixed by bolts. And the position of the connecting block 54 on the screw 53 is adjusted, so that the vertical steel bars can be just positioned in the clamping grooves on the connecting block 54, and preferably, the vertical steel bars can be tightly jacked by the jacking bolts 55, and the movement of the vertical steel bars in the horizontal direction is limited. The distance between the outer formwork and the vertical steel bars can be controlled by adjusting the position of the connecting block 54 on the screw 53, so that the thickness of the protective layer of the concrete cylinder wall is effectively controlled, and the eccentricity of the formwork is controlled.
In another embodiment, the control unit controls each hydraulic pump station to synchronously drive each hydraulic jack 22 to climb, and monitors whether the climbing travel and the climbing rate of each hydraulic jack 22 are consistent through the displacement measuring device 23.
In this technical scheme, after the concrete strength of the chimney wall meets the requirement, the split bolts between the outer template and the inner template are disassembled, the steel wire ropes on the outer side of the outer template are loosened, then the control element is used for controlling each hydraulic pump station to synchronously drive each hydraulic jack 22 to climb, the real-time climbing stroke and climbing rate of each hydraulic jack 22 are calculated and judged according to the data measured by the displacement monitoring device 23 in real time in the climbing process, whether abnormal conditions such as unsmooth die lifting and the like occur or not are timely found, climbing is timely stopped under the abnormal conditions, and quality and safety accidents caused by forced die lifting and the like are avoided.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. The hydraulic chimney lifting device comprises a chimney foundation, an operation platform, a plurality of groups of lifting devices and a control element, wherein each group of lifting devices is correspondingly provided with a template group; the hydraulic pump stations of each group of lifting devices are respectively connected with the control element; the working platform is fixedly connected with the hydraulic jack; the template group is arranged on the outer side of the chimney cylinder wall, and the outer side of the template group is fixedly connected with the operation platform;
the template group is formed by splicing a plurality of templates, any template is a trapezoid template, two adjacent templates are connected through a connecting plate, and a plurality of rows of bolt holes are formed in the connecting plate;
the connecting plate adopts an L-shaped plate, wherein one side parallel to the template is used for being connected with the template, and a plurality of through holes are formed at intervals on one side perpendicular to the template; when a plurality of template groups are spliced, a plurality of steel wire ropes are wrapped and hooped on the outer sides of the template groups, and the steel wire ropes pass through the through holes on the connecting plates to limit;
the top ends of the hydraulic jacks in each group of lifting devices are provided with displacement measuring devices, and the displacement measuring devices comprise idler wheels and encoders; the periphery of the roller is abutted with the supporting rod, one end of the roller is coaxially connected with the rotating shaft of the encoder, and the encoder is connected with the control element.
2. The chimney hydraulic lifting die device according to claim 1, wherein the working platform comprises a drum ring and a plurality of radiation beams uniformly distributed along the radial direction of the drum ring, one end of each radiation beam is fixedly connected with the drum ring, the other end of each radiation beam is fixedly connected with the hydraulic jack, and the bottom of each radiation beam is fixedly connected with the lower end of the drum ring through a plurality of lower pull rods; and a lifting derrick is connected above the drum ring through bolts.
3. The construction method of the chimney hydraulic lifting device according to any one of claims 1 to 2, characterized by comprising the steps of:
step one, constructing a chimney foundation and installing the chimney hydraulic lifting die device;
step two, assembling a plurality of template groups to form an outer template and installing an inner template; binding reinforcing steel bars and building lining bricks;
pouring the chimney wall;
controlling hydraulic jacks in all lifting devices to climb synchronously after the concrete strength of the wall of the chimney meets the requirement, and driving the operation platform and the outer template to climb synchronously to the next operation height;
step five, repeating the step two to the step four until the chimney is capped;
the assembly of the outer template comprises wrapping a plurality of steel wire ropes outside a plurality of template groups, and each steel wire rope is provided with a wire tightening screw rod; the lower end of the outer template is wrapped with two lower steel wire ropes at the lap joint position of the chimney cylinder wall, the rest part of the outer template is uniformly wrapped with a plurality of upper steel wire ropes, and the distance between two adjacent upper steel wire ropes is 10-12 times of the distance between the two lower steel wire ropes;
after the upper opening experience of the outer template is positioned, tightening an uppermost upper steel wire rope, enabling the upper opening of the outer template to be completely positioned and molded, recording the corresponding retraction stroke L1 of the tightening screw, then uniformly tightening the rest upper steel wire ropes from top to bottom in a small width, and recording the retraction strokes Ln' of the corresponding tightening screws; tightening the two lower steel wire ropes to enable the lower opening of the outer die plate to be completely positioned and molded, and recording the corresponding retraction stroke L2 of the tightening lead screw; calculating a stroke difference value L=L1-L2 to obtain the retracting strokes Ln=L/N of the remaining upper steel wire ropes, wherein N is the number of the remaining upper steel wire ropes, and sequentially adjusting the retracting strokes of the remaining steel wire ropes according to the value to enable Ln' =Ln, so that the whole outer template is positioned and molded.
4. The method for constructing a hydraulic chimney lifter according to claim 3, wherein the inner form is a foam plastic plate, and the inner form and the outer form are fixed by split bolts.
5. The construction method of the hydraulic chimney formwork lifting device according to claim 3, wherein the binding steel bars comprise vertical steel bar binding and annular steel bar binding, wherein an annular steel bar is bound at the same height with the upper opening of the outer formwork, and a plurality of formwork limiting support plates are arranged at intervals along the circumferential direction of the annular steel bar; the limiting support plate comprises a screw, one end of the screw is fixedly connected with a fixed plate, and a movable plate and a connecting block are sequentially sleeved on the screw close to the fixed plate; the movable plate is connected with the fixed plate through bolts, so that the upper end of the outer template is just clamped between the movable plate and the fixed plate; the connecting block with screw threaded connection, set up on the connecting block with vertical reinforcing bar matched with draw-in groove.
6. The construction method of the chimney hydraulic lifting die device according to claim 3, wherein the control unit controls each hydraulic pump station to synchronously drive each hydraulic jack to climb, and monitors whether climbing travel and climbing rate of each hydraulic jack are consistent through the displacement measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111164909.7A CN113863767B (en) | 2021-09-30 | 2021-09-30 | Hydraulic die lifting device for chimney and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111164909.7A CN113863767B (en) | 2021-09-30 | 2021-09-30 | Hydraulic die lifting device for chimney and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113863767A CN113863767A (en) | 2021-12-31 |
| CN113863767B true CN113863767B (en) | 2023-05-23 |
Family
ID=79001561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111164909.7A Active CN113863767B (en) | 2021-09-30 | 2021-09-30 | Hydraulic die lifting device for chimney and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113863767B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115897815A (en) * | 2022-12-29 | 2023-04-04 | 中冶建工集团有限公司 | Hydraulic synchronous jacking method for chimney construction |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535843B (en) * | 2011-12-16 | 2014-03-12 | 马鞍山钢铁建设集团有限公司 | Construction method of circular reinforced concrete chimney cylinder wall and hydraulic sliding mould device |
| CN104712143B (en) * | 2015-03-12 | 2016-09-14 | 山东电力建设第三工程公司 | A kind of circular steel reinforced concrete chimney wall reverse mould construction method |
| CN206233576U (en) * | 2016-10-21 | 2017-06-09 | 中亿丰建设集团股份有限公司 | For the hydraulic pressure lift turnover formwork construction device of bundled-tube structure chimney |
-
2021
- 2021-09-30 CN CN202111164909.7A patent/CN113863767B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113863767A (en) | 2021-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101028868B1 (en) | Lifting and moving apparatus temporary structure end segment of bridge and end segment for bridge structure method using the same | |
| CN113863767B (en) | Hydraulic die lifting device for chimney and construction method | |
| CN109404010B (en) | Aluminum tunnel mold system and operation method thereof | |
| CN104372947A (en) | Integral mold plate feeding and retreating construction method for elevator shaft | |
| CN110685433A (en) | Chimney construction device and construction method applying hydraulic lifting and rollover technology | |
| CN112112415B (en) | Floor building device and working method | |
| CN211286601U (en) | Chimney construction device applying hydraulic lifting and rollover technology | |
| CN111395271A (en) | Suspended sliding form for second-stage concrete lining of gate slot and construction method | |
| CN111719845A (en) | Three-connected silo slip form construction method | |
| CN110306783A (en) | A kind of chimney stalk runs derrick dislocation template inside-out formulation construction method | |
| CN113006145B (en) | Reverse construction method construction process for large-diameter working well movable formwork | |
| CN211306798U (en) | Demoulding device is used in production of concrete prefabricated member | |
| CN210712571U (en) | Bridge pier column construction system | |
| CN112482317A (en) | Door slot second-stage concrete self-climbing slip form pouring system and construction method | |
| CN112502178A (en) | Modular pipe jacking well construction equipment and use method | |
| CN108213282B (en) | Steel reinforcement cage for drilling pressure-grouting pile and forming device thereof | |
| CN108005684B (en) | Separated steel mould trolley and construction method thereof | |
| CN114855622A (en) | External climbing and internal hanging type construction device for hollow high pier construction and use method thereof | |
| CN214994080U (en) | Electric lifting movable mould frame for large-diameter working well | |
| CN108049316A (en) | Concrete high pier construction plate device | |
| CN110878549B (en) | Dam gallery construction method | |
| CN112012473A (en) | Integrated steel formwork for wall body of cantilever rib type of sewage pool | |
| CN111593761A (en) | Outdoor comprehensive pipe gallery formwork trolley construction process | |
| CN112761187A (en) | Electric lifting movable mould frame for large-diameter working well | |
| CN112502431A (en) | Hydraulic reverse formwork construction method for light aluminum alloy formwork of square chimney |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |