CN114960424A - Construction lofting device of arc concrete member - Google Patents
Construction lofting device of arc concrete member Download PDFInfo
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- CN114960424A CN114960424A CN202210318619.1A CN202210318619A CN114960424A CN 114960424 A CN114960424 A CN 114960424A CN 202210318619 A CN202210318619 A CN 202210318619A CN 114960424 A CN114960424 A CN 114960424A
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- lofting
- rod
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The application discloses construction laying-out device of arc concrete member. This construction laying-out device of arc concrete member when needs take shape, the flexible adjusting part of operation and make it produce flexible action, under its drive, two adjacent movable mould board units take place relative rotation to the movable mould board unit gesture has been changed, and then the shape of the side of the pouring space that is defined by two consecutive connecing by all movable mould board units is adjusted to predetermined shape, thereby the arc of having guaranteed the arc concrete member that takes shape reaches predetermined design, the precision of taking shape has been improved.
Description
Technical Field
The application relates to the technical field of building surveying and mapping, in particular to a construction lofting device for arc-shaped concrete members.
Background
In the related art, the formwork erection of the arc-shaped structure usually adopts a straight-line instead of curved-line mode, i.e. a section arc line is equally divided into a plurality of straight line sections, and then the formwork is erected by the straight line sections (for example, the anti-collision guardrail formwork of a bridge is usually 1.5-3 meters in length). If the number of equally divided segments is not sufficient, the arc will not be smooth enough, resulting in deviation of the accuracy of the arc of the formed arcuate concrete member from the predetermined shape.
Disclosure of Invention
In view of this, the application provides a construction laying-out device of arc concrete member, can improve the precision of the arc shaping to arc concrete member.
The application provides a construction laying-out device of arc concrete member, erect the subassembly including the template that is used for taking shape arc concrete member, the subassembly is erect to the template includes:
the supporting frame is provided with a plurality of telescopic adjusting components;
the movable template units are in rotary connection with two adjacent template units, and different movable template units are respectively in rotary connection with one telescopic adjusting component;
the fixed template and the movable template unit form a pouring space for containing pouring concrete;
when the telescopic adjusting assembly is operated by external force to perform telescopic motion, at least two adjacent template units can rotate relatively, so that the deformation of one side surface of the pouring space is adjusted, and the side surface is defined by sequentially connecting two movable template units.
Optionally, the movable template unit and the telescopic adjusting assembly are connected through a ball joint structure.
Optionally, a rib frame is fixedly connected to the movable template unit, and a rotating structure for rotatably connecting the movable template unit and the telescopic adjusting assembly is mounted on the rib frame.
Optionally, the telescopic assembly comprises a knob, a screw rod and a threaded seat, the threaded seat is arranged on the supporting seat, the screw rod is screwed with the threaded seat, and the knob is fixedly connected with the screw rod.
Optionally, a sleeve is sleeved on the periphery of the screw, and scale marks are arranged on the sleeve.
Optionally, still include the arc concrete member and carry out the measuring component that lofting was measured, measuring component is including the first lofting pole that is provided with the target plate, the second lofting pole that is provided with visual beam distancer, the target plate is used for the reflection the light beam that visual beam distancer sent, the second lofting pole is installed and is used for receiving and releasing the rope of serving as go-between and receive and release the piece.
Optionally, the periphery of the first lofting rod is movably sleeved with a lantern ring, and the lantern ring is used for installing one end part of the measuring rope.
Optionally, a horizontal bubble instrument is mounted on the second lofting rod.
Above provide construction laying-out device of arc concrete member, when needs take shape, the flexible adjusting part of operation makes it produce flexible action, and under its drive, two adjacent movable mould board units take place relative rotation to the movable mould board unit gesture has been changed, and then the shape of the side of the pouring space that is defined by two consecutive connecing of all movable mould board units is adjusted to predetermined shape, thereby has guaranteed that the arc of the arc concrete member that takes shape reaches predetermined design, has improved the accuracy nature of taking shape.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a block diagram providing a perspective view of a formwork mounting assembly according to an embodiment of the present disclosure.
Fig. 2 is a perspective view of a formwork erection assembly according to an embodiment of the present application.
Fig. 3 is a perspective view of a telescopic adjustment assembly according to an embodiment of the present disclosure.
Fig. 4 is a schematic view of a measurement assembly in a measurement state according to an embodiment of the present disclosure.
Fig. 5 is a block diagram of a measurement assembly according to an embodiment of the present application.
FIG. 6 is a schematic structural diagram of a second lofting rod according to an embodiment of the present application.
Fig. 7 provides an exploded view of a cord retractor according to an embodiment of the present application.
Wherein the elements in the figures are identified as follows:
1-a cylindrical base; 2-a second lofting rod; 3-a visible beam rangefinder; 4-horizontal bubble instrument; 5-measuring a rope; 6-a first lofting rod; 7-target plate; 8-a collar; 9-fastening the knob; 10-an inner cylinder; 11-a bearing; 12-a take-up drum; 13-a crank; 14-a tensioner; 15-anchor plate; 16-a tripod; 17-rotating handle; 18-a screw; 19-rib cage; 20-a threaded seat; 21-a bulb; 22-a rotating seat; 23-fixing the template; 24-a movable template; 25-a telescopic adjustment assembly; 26-support frame.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Before the technical solutions of the present application are introduced, it is necessary to explain the background of the invention of the present application.
It is common in the related art that the formwork of the arc-shaped structure is erected in a straight-to-curved manner, i.e., a section arc is divided into a plurality of straight sections, and then the formwork is erected in the straight sections (e.g., a section of the crash barrier of a bridge is usually 1.5-3 meters). Since the number of the equal formed straight line segments is limited, even if the splicing sequence is adjusted, the arc formed by splicing is determined to have larger deviation from the preset shape, so that the arc accuracy of the formed arc concrete member is deviated from the preset shape, and the forming accuracy is reduced.
Based on the above problems discovered by the inventors, the inventor proposes a construction lofting device for an arc-shaped concrete member, wherein when the arc-shaped concrete member needs to be formed, the telescopic adjusting assembly 25 is operated to generate telescopic action, and under the driving of the telescopic adjusting assembly, two adjacent movable formwork 24 units relatively rotate, so that the postures of the movable formwork 24 units are changed, and further, the shape of one side surface of a casting space formed by sequentially connecting two movable formwork 24 units is adjusted to a preset shape, so that concrete can be cast into the casting space, thereby ensuring that the arc shape of the formed arc-shaped concrete member reaches a preset design, and improving the forming accuracy.
Moreover, in the related art, when concrete is introduced into the casting space surrounded by the formworks, the impact force of the concrete casting and the extrusion force of the concrete inevitably cause slight deviation of the joints of the formworks, which causes slight deformation of the shape of the whole formwork, and this is also a source of reducing the accuracy of the arc shape of the final concrete member.
In the application, besides the fact that the arc shape of one side surface of the pouring space can be made to accord with the preset design through flexible adjustment before pouring, the posture of the movable template 24 unit can be still adjusted after concrete is introduced into the pouring space (when the concrete does not start to be solidified), so that the template position deformation caused by pouring action is eliminated, the fact that the shape formed by the template in a surrounding mode accords with the preset design before the concrete is completely solidified is guaranteed, and therefore forming accuracy is improved. Therefore, the invention is created.
Referring to fig. 1 and 2, the present application provides a construction layout device for curved concrete members, including a formwork erection assembly for forming the curved concrete members, the formwork erection assembly including:
a supporting frame 26, wherein a plurality of telescopic adjusting components 25 are arranged on the supporting frame 26;
a plurality of movable die plate 24 units, wherein two adjacent die plate units are rotatably connected, and different movable die plate 24 units are respectively rotatably connected with one telescopic adjusting component 25;
a fixed formwork 23 for enclosing a casting space for accommodating casting concrete with the movable formwork 24 unit;
when the telescopic adjusting assembly 25 is operated by external force to perform telescopic movement, at least two adjacent formwork units can rotate relatively, so that the deformation of one side surface of the pouring space is adjusted, and the side surface is defined by connecting all the movable formwork 24 units in sequence.
It is easy to think of the structure for realizing the rotational connection of the two template units in the adjacent positions can be a hinged or pin-jointed or pivoted structure or a ball head 21 structure and the like.
The shape formed by connecting the fixed formworks 23 can be any, and can be a straight line or a curved line, and the shape is designed according to the concrete member required to be formed actually. The connection of the fixed die plate 23 and the movable die plate 24 unit (it should be understood that the fixed die plate 23 is connected with the movable die plate 24 unit positioned at the head section and the tail end) can be a fixed connection or a rotary connection.
As one way of achieving the rotational connection of the movable die plate 24 unit and the telescopic adjustment assembly 25, the movable die plate 24 unit and the telescopic adjustment assembly 25 are connected through a ball 21 connection structure.
Here, the ball 21 connecting structure, which is well known to those skilled in the art, has a ball 21 and a spherical groove that is matched with the ball 21. Specifically, the ball 21 may be disposed at an end of the telescopic adjustment assembly 25, and the ball groove may be disposed on the movable die plate 24 unit.
As an exemplary manner of providing the spherical groove, referring to fig. 3, a rotary base 22 is provided on the mold plate, and the rotary base 22 is provided with the spherical groove. The rotary base 22 can be fixedly or rotatably connected to the formwork. In the case of the fastening, automatic rolling or sliding between the spherical groove and the ball 21 can take place, but the ball 21 is not allowed to escape from the spherical groove. In the case of a rotational connection, the contact between the ball 21 and the spherical groove is relatively tight, i.e. there is a relatively large obstacle for the ball 21 to slide in the spherical groove.
Referring to fig. 3, as one implementation of installing a rotation structure for rotatably connecting the movable die plate 24 unit and the telescopic adjusting assembly 25, the movable die plate 24 unit is fixedly connected with a rib frame 19.
Thus, the rigidity of the attachment of the pivot structure in the bearing force direction can be realized by the rib frame 19. In addition, the movable template 24 can be effectively improved to carry out bearing reinforcement.
Referring to fig. 3, the shape of the rib cage 19 may be a cross shape, etc., or any other shape. The rib frame 19 may be welded or screwed to the movable die plate 24.
Referring to fig. 3, as an implementation manner of the telescopic assembly, the telescopic assembly includes a knob 17, a screw 18 and a screw seat 20, the screw seat 20 is disposed on the support seat, the screw 18 is screwed with the screw seat 20, and the knob 17 is fixedly connected to the screw 18.
Therefore, by screwing the knob 17, the screw 18 rotates, and the rotation of the screw 18 is only converted into the linear motion of the screw 18 under the fixation of the threaded seat 20, so that the screw 18 extends and retracts.
It should be noted that, the telescopic assembly with the structure not only can be conveniently adjusted to be telescopic, but also can lock the position of the externally adjusted telescopic assembly, namely, the movable template 24 is prevented from deforming due to extrusion force of pouring concrete through the threaded seat 20 and the threaded rod 18 in threaded matching, so that the adjusted movable template 24 is prevented from completely deforming, and the trouble of subsequent readjustment is increased.
Of course, as other implementations of the telescopic assembly (not shown in the figures), the telescopic adjustment member 25 may also adopt a well-known form such as an air cylinder or an electric push rod. In addition to the mechanical power-dependent approach here, a manual approach may also be employed. For example, a slide rail is fixedly installed on the supporting frame 26, a push rod is installed in cooperation with the slide rail, the push rod is configured to slide in the slide rail, and the push rod is implemented manually. The push rod can be also provided with a roller to improve the labor saving of the push rod.
Of course, in these other non-threaded embodiments, additional locking members may be required to lock the position of the adjusted telescoping assembly. The locking members may be bolts or the like or any conceivable retaining members. Specifically, a rotatable limiting block or a limiting rod is arranged on the supporting frame 26, and the limiting block or the limiting rod can stop the end part of the telescopic assembly operated by external force through rotation.
In a typical embodiment, a sleeve (not shown) is sleeved on the outer periphery of the screw 18, and the sleeve is provided with scale marks (not shown).
Thus, the screw 18 can be easily advanced by the scale marks. The sleeve may also protect the screw 18 from dust and the like damaging the screw 18.
It is contemplated that the above-described arrangement shape of the telescopic adjusting assemblies 25, the rib frames 19, etc. may be a matrix arrangement.
Referring to fig. 1 and 2, as one implementation of the above-mentioned support base, there may be one including a tripod 16 and an anchor plate fixedly connected to the tripod.
Referring to fig. 4 and 5, in a typical embodiment, the device further comprises a measuring assembly for lofting the arc-shaped concrete member, wherein the measuring assembly comprises a first lofting rod 6 provided with a target plate 7 and a second lofting rod 2 provided with a visible light beam distance meter 3, the target plate 7 is used for reflecting a light beam emitted by the visible light beam distance meter 3, and the second lofting rod 2 is provided with a rope winding and unwinding member for winding and unwinding the measuring rope 5.
Therefore, the light beam generated by the visible light beam distance measuring device 3 can be used as a reference line for unfolding the measuring rope 5, and the pitching angle of the released measuring rope 5 can be obtained only by keeping the levelness of the light beam. And then the azimuth horizontality of the measuring rope 5 is ensured by adjusting the measuring rope 5.
It should be known that the visible beam rangefinder 3 may be a laser rangefinder or the like. Of course, a level gauge widely used in tile laying construction can also be adopted.
The second lofting rod 2 may be a prism rod of a total station or a lofting rod of a GPS.
In order to facilitate the adjustment of the end of the measuring rope 5 up and down along the first lofting rod 6 to adjust the azimuth horizontality of the unfolded measuring rope 5, a collar 8 is movably sleeved on the periphery of the first lofting rod 6, and the collar 8 is used for mounting the end of the measuring rope 5.
Thus, in use, the end of the measuring string 5 is tied to the collar 8, and the azimuth horizontality of the deployed measuring string 5 can be adjusted by vertically adjusting the collar 8 along the outer periphery of the first lofting rod 6.
In an exemplary embodiment, the second lofting bar 2 is equipped with a horizontal bubble-meter 4 to directly represent the levelness of the optical rangefinder.
Referring to fig. 6 and 7, as one mode, the device comprises a cylindrical base 1, a fastening knob 9, an inner cylinder 10, a bearing 11 and a take-up cylinder 12 are arranged in the cylindrical base 1, the take-up cylinder 12 is fixedly connected with a crank 13, the fastening knob 9 is tightly pressed on the inner cylinder 10, the inner cylinder 10 is inserted into an inner cavity of the take-up cylinder 12, the bearing 11 is used for connecting the inner cylinder 10 and the inner cylinder 10, and a tensioner 14 is arranged on the cylindrical base 1 and used for adjusting the tightness of the measuring rope 5.
Here, the visible light beam distance measuring device 3 and the horizontal bubble meter 4 may be mounted on the cylindrical base 1.
Of course, as other modes, the rope winding and unwinding member may be a widely used winding and unwinding mechanism such as a caliper or a tape measure
The specific operation process of the technical scheme of the application is described for an application scenario with wider application. It should be noted that this general embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved by the present application, but is merely exemplary.
Referring to fig. 3, the procedure for the subgrade compaction operation using the auxiliary measuring device of the present application is as follows:
s1, sleeving the cylindrical base 1 on a prism rod of a total station or a lofting rod of a GPS, and fixing by rotating a conical fastener;
s2, lofting the circle center position;
s3, adjusting the verticality of the second lofting rod 2 to enable the visual beam distance meter 3 to be in a horizontal position;
s4, lofting (single-point lofting) by using the visible light beam distance measuring device 3 and the lofting rod;
s5, adjusting the height of the lantern ring 8 on the first lofting rod 6, eliminating the i angle (the pitch angle of the measuring rope 5), pulling out the measuring rope 5 until the radius of the arc is equal to the radius of the arc, and performing arc sweeping lofting (during arc sweeping lofting).
S6, adjusting the template erection assembly until the shape of the pouring space reaches a preset shape;
s7, checking the contour line of the pouring space by using the measuring assembly, and adjusting again;
and S8, pouring concrete.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A construction lofting apparatus for curved concrete elements, comprising a formwork erection assembly for forming curved concrete elements, the formwork erection assembly comprising:
the supporting frame is provided with a plurality of telescopic adjusting components;
the movable template units are in rotary connection with two adjacent template units, and different movable template units are respectively in rotary connection with one telescopic adjusting component;
the fixed template and the movable template unit form a pouring space for containing pouring concrete;
when the telescopic adjusting assembly is operated by external force to perform telescopic motion, at least two adjacent template units can rotate relatively, so that the deformation of one side surface of the pouring space is adjusted, and the side surface is defined by sequentially connecting two movable template units.
2. The construction lofting device of claim 1, wherein the movable template unit and the telescoping adjustment assembly are connected by a ball joint connection.
3. The construction lofting device of claim 1, wherein a rib frame is fixedly connected to the movable template unit, and a rotating structure for rotatably connecting the movable template unit and the telescopic adjusting assembly is mounted on the rib frame.
4. The construction lofting device of claim 1, wherein the telescoping assembly includes a knob, a threaded rod, and a threaded seat, the threaded seat being disposed on the support base, the threaded rod being threadably engaged with the threaded seat, the knob being fixedly secured to the threaded rod.
5. The construction lofting device of claim 4, wherein a sleeve is sleeved on the periphery of the screw rod, and scale marks are arranged on the sleeve.
6. The construction lofting device of claim 1, further comprising a measuring assembly for lofting the arc-shaped concrete member, wherein the measuring assembly comprises a first lofting rod provided with a target plate and a second lofting rod provided with a visible light beam distance meter, the target plate is used for reflecting the light beam emitted by the visible light beam distance meter, and the second lofting rod is provided with a rope take-up and pay-off component for taking up and paying off the measuring rope.
7. The construction lofting device of claim 6, wherein a collar is movably sleeved on the outer periphery of the first lofting rod, and the collar is used for mounting one end part of the measuring rope.
8. The construction loft apparatus of claim 6 wherein a horizontal bubble gauge is mounted on the second loft rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210318619.1A CN114960424A (en) | 2022-03-29 | 2022-03-29 | Construction lofting device of arc concrete member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210318619.1A CN114960424A (en) | 2022-03-29 | 2022-03-29 | Construction lofting device of arc concrete member |
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| Publication Number | Publication Date |
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| CN114960424A true CN114960424A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210318619.1A Pending CN114960424A (en) | 2022-03-29 | 2022-03-29 | Construction lofting device of arc concrete member |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201546445U (en) * | 2009-11-20 | 2010-08-11 | 中煤第三建设（集团）有限责任公司 | Construction formwork and supporting system of reinforced concrete curved surface |
| CN210767815U (en) * | 2019-08-01 | 2020-06-16 | 东南大学建筑设计研究院有限公司 | Space curved surface concrete formwork capable of being formed at will |
| CN213632113U (en) * | 2020-12-17 | 2021-07-06 | 中铁四局集团有限公司 | Fold-line-shaped ground is wall laying-out device fast even |
| CN114199217A (en) * | 2018-10-31 | 2022-03-18 | 莱卡地球系统公开股份有限公司 | Surveying and mapping system and auxiliary measuring instrument |
| CN217538034U (en) * | 2022-03-24 | 2022-10-04 | 中国一冶集团有限公司 | Arc side form support system |
-
2022
- 2022-03-29 CN CN202210318619.1A patent/CN114960424A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201546445U (en) * | 2009-11-20 | 2010-08-11 | 中煤第三建设（集团）有限责任公司 | Construction formwork and supporting system of reinforced concrete curved surface |
| CN114199217A (en) * | 2018-10-31 | 2022-03-18 | 莱卡地球系统公开股份有限公司 | Surveying and mapping system and auxiliary measuring instrument |
| CN210767815U (en) * | 2019-08-01 | 2020-06-16 | 东南大学建筑设计研究院有限公司 | Space curved surface concrete formwork capable of being formed at will |
| CN213632113U (en) * | 2020-12-17 | 2021-07-06 | 中铁四局集团有限公司 | Fold-line-shaped ground is wall laying-out device fast even |
| CN217538034U (en) * | 2022-03-24 | 2022-10-04 | 中国一冶集团有限公司 | Arc side form support system |
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