CN115596090A

CN115596090A - Temporary support device and method for large-span hyperbolic truss of dome cinema

Info

Publication number: CN115596090A
Application number: CN202211232011.3A
Authority: CN
Inventors: 吴笛; 张凯华; 陈豹; 魏嵩; 陈帅
Original assignee: China Construction Eighth Bureau Development and Construction Co Ltd
Current assignee: China Construction Eighth Bureau Development and Construction Co Ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-01-13

Abstract

The invention provides a temporary supporting device and a temporary supporting method for a large-span hyperbolic truss of a ball screen cinema, which belong to the technical field of building construction, and comprise a limiting frame, a supporting frame and a base which are sequentially arranged; the limiting frame comprises two pieces of supporting steel which are symmetrically arranged on the supporting frame, and movable limiting parts which can slide oppositely are arranged on the two pieces of supporting steel; the movable limiting part comprises a movable plate, two fixing seats are symmetrically fixed on the movable plate, a connecting shaft penetrating through a shaft hole of the fixing seats is arranged between the fixing seats, blocking arms are sleeved at two ends of the connecting shaft, and blocking frames are fixed between the blocking arms. The transmission mechanism of the base can enable the turntable to rotate clockwise or anticlockwise and can also adapt to the radian of the hyperbolic truss; meanwhile, the driving assembly can be driven in two modes, and the second foot-treading mode is adopted, so that labor is saved, and the labor intensity is reduced.

Description

Temporary supporting device and method for large-span hyperbolic truss in spherical-screen cinema

Technical Field

The invention belongs to the technical field of building construction, and particularly relates to a temporary supporting device and method for a large-span hyperbolic truss of a spherical-screen cinema.

Background

The truss is a structure formed by connecting rod pieces at two ends of each other by hinges, the truss is a plane or space structure which is generally provided with triangular units and consists of straight rods, the truss rod pieces mainly bear axial tension or pressure, so that the strength of materials can be fully utilized, materials can be saved compared with a solid web girder when the span is large, the dead weight is reduced, the rigidity is increased, and the truss has the advantages that the rod pieces mainly bear tension or pressure, the functions of the materials can be fully exerted, the materials are saved, the structural weight is reduced, and commonly used steel trusses, reinforced concrete trusses, prestressed concrete trusses, wood trusses, steel and wood combined trusses and steel and concrete combined trusses.

For large-span buildings, such as airport terminal buildings, stadiums, exhibition halls and the like, the roof is usually of a combined structure with a plurality of parallel trusses, purlins or secondary arches, and the roof truss is usually mainly an inverted triangular pipe truss or a vertical plane pipe truss, mostly a plane arch and supported by a plurality of steel columns to form the whole truss. However, in the architectural design of a terminal building where a roof and a facade need to be coherent to form an overall arc-shaped appearance, the above-described structure cannot be handled well at the intersection of the roof and the facade.

At present, the urbanization development of China enters a new stage, people have more high-grade and high-grade requirements on urban construction and daily life, special-shaped structure buildings are in endless, the construction and popularization of a high-tech dome screen movie experience hall also become a development trend, a dome cinema adopts a special-shaped steel structure due to the fact that the space of the dome cinema is a sphere, a large single-curved-surface truss and a hyperboloid truss are adopted due to modeling requirements, and the hyperboloid truss is of a special-shaped steel structure, so that stress is complex when the dome cinema is assembled on the ground, line type cannot be well controlled, and the risk of falling is easy to occur.

Disclosure of Invention

The embodiment of the invention provides a temporary supporting device and method for a large-span hyperbolic truss of a spherical screen cinema, and aims to solve the problems that the existing hyperbolic truss is complex in stress and easy to fall off during assembly.

In view of the above problems, the technical solution proposed by the present invention is:

the first aspect is that the temporary support device for the large-span hyperbolic truss in the spherical-screen cinema comprises a limiting frame, a support frame and a base which are sequentially arranged; the limiting frame comprises two pieces of supporting steel which are symmetrically arranged on the supporting frame, and movable limiting parts which can slide oppositely are arranged on the two pieces of supporting steel;

remove spacing portion including the movable plate, be the symmetry on the movable plate and be fixed with two fixing bases, two be equipped with the connecting axle of wearing out its shaft hole between the fixing base, the both ends of connecting axle have all been cup jointed and have been kept off the arm, two it keeps off the frame to be fixed with between the arm to keep off.

As a preferable technical solution of the present invention, the connecting shaft is screwed by a nut to limit the inclination angle of the stopper arm.

As a preferred technical scheme of the present invention, the support frame includes two square steel tubes symmetrically fixed on the base, the two square steel tubes are fixed by fixing square steel, a fixing plate is disposed in each square steel tube, a first support plate is fixed on each square steel tube, a second support plate is slidably connected to one side of the first support plate, and a mounting seat is fixed on the second support plate.

As a preferable technical solution of the present invention, the first support plate and the second support plate are respectively provided with a first long hole and a second long hole.

As a preferable technical solution of the present invention, the first support plate and the second support plate are positioned by positioning bolts sequentially penetrating through the first long hole and the second long hole.

As a preferred technical scheme of the invention, the base comprises a round shell, a through hole is formed in the axis of the round shell, a rotary table is rotatably arranged in the through hole, the fixed plate and the square steel pipe are fixed on the rotary table through a fixed bolt, a rectangular shell is fixed on the arc surface of the rotary table, the rectangular shell and the round shell are communicated to form a fan-shaped cavity, and the bottom of the fan-shaped cavity is detachably connected with a bottom plate.

As a preferable technical solution of the present invention, one side of the rectangular casing away from the circular casing is provided with an operation opening.

As a preferable technical scheme of the invention, a transmission mechanism is arranged in the round fan-shaped cavity and comprises an execution assembly, the execution assembly is connected with a driving assembly, and the driving assembly is a crank.

As a preferred technical solution of the present invention, the executing assembly includes a rack, the rack is semicircular, the rack is fixed at the bottom of the turntable, the rack is engaged with a gear, a first transmission shaft is fixed in a shaft hole of the gear, one end of the first transmission shaft is rotatably connected to the circular housing, a first bevel gear is fixed at the other end of the first transmission shaft, the first bevel gear is engaged with a second bevel gear, and a second transmission shaft is fixed in a shaft hole of the second bevel gear.

In a second aspect, the invention provides a temporary support method for a large-span hyperbolic truss in a spherical screen cinema, which comprises the following steps:

s1, moving the moving limiting parts towards or away from each other according to the specification of the hyperbolic truss, and fixing the moving plate and the support steel through fastening bolts after the completion;

s2, moving the second support plate longitudinally along the first support plate, and positioning the second support plate through a positioning bolt after the second support plate is moved longitudinally;

and S3, rotating the second transmission shaft and the second bevel gear to rotate through the driving assembly, rotating the second bevel gear to transmit to the first bevel gear, driving the first transmission shaft and the gear to rotate, and simultaneously rotating the turntable through the matching of the racks.

Compared with the prior art, the invention has the beneficial effects that:

(1) Spacing, support frame and base all adopt the detachable mode to connect, both made things convenient for temporary support device's dismantlement, made things convenient for temporary support device's transfer again to can improve working effect.

(2) The limiting frame and the supporting frame are adjustable, so that the applicability of the temporary supporting device is improved; namely, the spacing between the two movable limiting parts can be adjusted by the limiting frame so as to adapt to the radian of the hyperbolic truss; the blocking arm can adjust the inclination angle to adapt to the irregular boundary of the hyperbolic truss.

(3) The transmission mechanism of the base can enable the turntable to rotate clockwise or anticlockwise and can also adapt to the radian of the hyperbolic truss; meanwhile, the driving assembly can adopt two modes for transmission, and the second foot treading mode is adopted, so that more labor is saved, and the labor intensity is reduced.

The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.

Drawings

Fig. 1 is a schematic structural diagram of a large-span hyperbolic truss temporary support device for a spherical-screen cinema disclosed by the invention;

fig. 2 is a schematic structural diagram of a limiting frame of a large-span hyperbolic truss temporary supporting device for a spherical-screen cinema, which is disclosed by the invention;

fig. 3 is a schematic structural diagram of a support frame of a large-span hyperbolic truss temporary support device for a spherical screen cinema, which is disclosed by the invention;

fig. 4 is a main sectional view of a base of a large-span hyperbolic truss temporary support device for a dome cinema disclosed by the invention;

fig. 5 is a schematic structural diagram of another embodiment of a driving assembly of a large-span hyperbolic truss temporary support device for a spherical screen cinema, which is disclosed by the invention;

fig. 6 is a flow chart of a temporary supporting method for a large-span hyperbolic truss in a spherical screen cinema, which is disclosed by the invention.

Description of the reference numerals: 100. a limiting frame; 110. supporting steel; 120. a movement limiting part; 121. moving the plate; 122. a fixed seat; 123. a connecting shaft; 124. a catch arm; 125. a blocking frame; 200. a support frame; 210. a square steel pipe; 220. a fixing plate; 221. fixing the bolt; 230. a first support plate; 231. a first long hole; 240. a second support plate; 241. a second long hole; 242. positioning the bolt; 250. a mounting seat; 300. a base; 310. a circular shell; 311. a through hole; 320. a turntable; 330. a rectangular housing; 331. an operation port; 340. a base plate; 350. a transmission mechanism; 351. an execution component; 3511. a rack; 3512. a gear; 3513. a first drive shaft; 3514. a first bevel gear; 3515. a second bevel gear; 3516. a second transmission shaft; 352. a drive assembly; 3521. mounting a plate; 3521a, a pore plate; 3522. a third bevel gear; 3522a, an output shaft; 3523. a fourth bevel gear; 3523a, an input shaft; 3524. a rotating arm; 3525. a first link; 3526. a second link; 3527. a rotating shaft; 3528. a supporting base; 3529. pressing the board.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

Referring to the attached drawings 1-5, the invention provides a technical scheme: a temporary supporting device for a large-span hyperbolic truss of a spherical-screen cinema comprises a limiting frame 100, a supporting frame 200 and a base 300 which are sequentially arranged; the limiting frame 100 comprises two supporting steels 110 symmetrically installed on the supporting frame 200, and two movable limiting parts 120 capable of sliding in opposite directions are arranged on the two supporting steels 110.

According to the embodiment, in the temporary supporting process, at least two temporary supporting devices are arranged, namely the temporary supporting devices are distributed at two ends of the hyperbolic truss; of course, if the radian of the hyperbolic truss is too large, a temporary supporting device can be supported in the middle of the hyperbolic truss. The limiting frame 100 has a limiting effect on the hyperbolic truss, so that the hyperbolic truss can be prevented from sliding off; the support frame 200 not only can play a role in supporting, but also can play a role in adjusting along with the height of the hyperbolic truss; the base 300 not only can support, but also can steer the supporting frame 200.

Referring to fig. 1-2, the movable limiting portion 120 includes a movable plate 121, two fixing bases 122 are symmetrically fixed on the movable plate 121, a connecting shaft 123 penetrating through a shaft hole of the two fixing bases 122 is disposed between the two fixing bases 122, two ends of the connecting shaft 123 are respectively sleeved with a blocking arm 124, and a blocking frame 125 is fixed between the two blocking arms 124.

According to the embodiment, the moving plates 121 are moved towards or away from each other, the distance between the two movement limiting parts 120 can be adjusted to adapt to the specification of the hyperbolic truss, and after the completion, the moving plates 121 and the support steel 110 are fixed through fastening bolts. Meanwhile, the transverse plate and a plurality of L-shaped baffle plates distributed along the length direction of the transverse plate form a rake-shaped baffle frame 125 so as to strengthen the limit of the hyperbolic truss.

Further, the connection shaft 123 is screw-coupled by a nut to limit the inclination angle of the stopper arm 124. The blocking arm 124 can form a rotating connection relation with the connecting shaft 123, so that the blocking arm 124 can perform a turning motion around the connecting shaft 123 to change the inclination angle of the blocking arm 124 so as to adapt to the irregular boundary of the hyperbolic truss; after the completion, the connecting shaft 123 is screwed in the direction of the fixing seat 122 through a nut, so as to attach and fasten the blocking arm 124 to the fixing seat 122.

Referring to fig. 1 to 3, the supporting frame 200 includes two square steel tubes 210 symmetrically fixed on a base 300, the two square steel tubes 210 are fixed by fixing square steel, a fixing plate 220 is disposed in each square steel tube 210, a first supporting plate 230 is fixed on each square steel tube 210, a second supporting plate 240 is slidably connected to one side of the first supporting plate 230, and a mounting base 250 is fixed on the second supporting plate 240.

According to the embodiment, after the square steel tube 210 is fixed on the turntable 320, when the turntable 320 rotates, the angle of the support frame 200 is adjustable to adapt to the radian of the hyperbolic truss; meanwhile, the second support plate 240 is moved longitudinally along the first support plate 230 and positioned, so that the height of the supporting stand 200 is adjustable.

Further, a reinforcing plate is disposed between the first support plate 230 and the square steel pipe 210. Since the temporary supporting devices are usually supported at two ends of the hyperbolic truss, the hyperbolic truss generates an outward thrust to the temporary supporting devices, and the effect of the supporting frame 200 is enhanced through the arranged reinforcing plates, so that the first supporting plate 230 is prevented from toppling.

Further, the first support plate 230 and the second support plate 240 are respectively provided with a first long hole 231 and a second long hole 241. The second long hole 241 and the first long hole 231 are used to match the height adjustment of the second support plate 240 and the first support plate 230.

Further, the first support plate 230 and the second support plate 240 are positioned by the positioning bolt 242 sequentially passing through the first long hole 231 and the second long hole 241. After the height adjustment of the second support plate 240 is completed, the positioning bolt 242 sequentially passes through the first long hole 231 and the second long hole 241, so that the second support plate 240 and the first support plate 230 can be fixed.

Further, the base 300 comprises a circular shell 310, a through hole 311 is formed in the axis of the circular shell 310, a rotating disc 320 is rotatably arranged in the through hole 311, the fixing plate 220 and the square steel tube 210 are fixed on the rotating disc 320 through a fixing bolt 221, a rectangular shell 330 is fixed on the arc surface of the rotating disc 320, the rectangular shell 330 is communicated with the circular shell 310 to form a circular sector cavity, and a bottom plate 340 is detachably connected to the bottom of the circular sector cavity.

According to the embodiment, particularly in the adjusting process of the limiting frame 100 and the supporting frame 200, the operator needs to climb on the circular shell 310; for convenience of climbing, the rectangular housing 330 may be used as a step. In addition, in order to facilitate the assembly and disassembly of the bottom plate 340, the bottom plate 340 is configured to be matched with the round sector-shaped cavity.

Further, a side of the rectangular housing 330 away from the circular housing 310 has an operation opening 331. The operation port 331 is opened according to the use of the drive unit 352. For example, the driving assembly 352 is of a hand-operated type, and the length of the operation opening 331 needs to be set up to the second transmission shaft 3516; however, the driving element 352 is a foot-operated type, and the length of the operation opening 331 is only required to be extended to the supporting seat 3528.

Referring to fig. 1 and 4, a transmission mechanism 350 is arranged in the round fan-shaped cavity, the transmission mechanism 350 comprises an actuating assembly 351, and a driving assembly 352 is connected to the actuating assembly 351.

In one embodiment of the present invention, drive assembly 352 is a crank.

Further, as shown in fig. 3 to 4, the actuating assembly 351 includes a rack 3511, the rack 3511 is semicircular, the rack 3511 is fixed at the bottom of the rotating disc 320, a gear 3512 is engaged with the rack 3511, a first transmission shaft 3513 is fixed in a shaft hole of the gear 3512, one end of the first transmission shaft 3513 is rotatably connected with the circular housing 310, a first bevel gear 3514 is fixed at the other end of the first transmission shaft 3513, a second bevel gear 3515 is engaged with the first bevel gear 3514, and a second transmission shaft 3516 is fixed in a shaft hole of the second bevel gear 3515.

According to the embodiment, the second transmission shaft 3516 and the second bevel gear 3515 are rotated by the crank handle, the second bevel gear 3515 is rotated to transmit power to the first bevel gear 3514, the first transmission shaft 3513 and the gear 3512 are driven to rotate, and the rotary table 320 is rotated by the cooperation of the rack 3511, so that the rotary table 320 is rotated clockwise or counterclockwise.

In another embodiment of the present invention, as shown in fig. 5, except that the driving assembly 352 is different, the driving assembly 352 is the same, the driving assembly 352 includes a mounting plate 3521, the mounting plate 3521 has three hole plates 3521a, a third bevel gear 3522 is disposed at a side of the hole plate 3521a close to the second transmission shaft 3516, a fourth bevel gear 3523 is disposed at a side opposite to the other two hole plates 3521a, an output shaft 3522a is fixed to a shaft hole of the third bevel gear 3522, one end of the output shaft 3522a passes through the hole plate 3521a and is fixed to the second transmission shaft 3516, input shafts 3523a are fixed to shaft holes of the two fourth bevel gears 3523, each input shaft 3523a passes through the hole plate 3521a and is fixed to a rotating arm 3524, the rotating arm 3524 is L-shaped, a first connecting rod 3525 is connected to each rotating arm 3524, one end of the first connecting rod 3525 is rotatably connected to a second connecting rod 3526, one end of the second connecting rod 3526 is fixed to a rotating shaft 3527, a surface of the rotating shaft 3527 is rotatably connected to a supporting base 3528, and a supporting base 3527 is detachably connected to the supporting base 3527, and an end of the pressing plate 3529 is detachably connected to the supporting base 3527.

According to this embodiment, different rotation directions of the rack 3511 can be controlled by pressing the left pressing plate 3529 or lifting the right pressing plate 3529; for example, when the dial 320 is rotated counterclockwise, the left pressing plate 3529 may be pressed, and when the dial 320 is rotated clockwise, the right pressing plate 3529 may be lifted. When the rotating disc is used, the pressing plate 3529 drives the rotating shaft 3527 to enable the second connecting rod 3526 to turn, the first connecting rod 3525 pushes or pulls the rotating arm 3524 to rotate, the fourth bevel gear 3523 is driven to rotate and transmit to the third bevel gear 3522, and then the output shaft 3522a transmits to the actuating assembly 351, so that the rotating disc 320 can be driven to rotate.

EXAMPLE III

Referring to fig. 6, another method for temporarily supporting a large-span hyperbolic truss in a spherical-screen cinema provided by the embodiment of the present invention includes the following steps:

s1, moving the movement limiting parts 120 in the opposite direction or in the opposite direction according to the specification of the hyperbolic truss, and fixing the moving plate 121 and the support steel 110 through fastening bolts after the movement limiting parts are moved in the opposite direction or in the opposite direction;

s2, the second support plate 240 is moved longitudinally along the first support plate 230, and the second support plate 240 is positioned through the positioning bolt 242 after the movement is completed;

and S3, the second transmission shaft 3516 and the second bevel gear 3515 are rotated by the driving assembly 352, the second bevel gear 3515 is rotated to transmit power to the first bevel gear 3514, the first transmission shaft 3513 and the gear 3512 are driven to rotate, and the rotary table 320 is rotated by the cooperation of the rack 3511.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A temporary supporting device for a large-span hyperbolic truss of a dome cinema is characterized by comprising a limiting frame, a supporting frame and a base which are sequentially arranged; the limiting frame comprises two pieces of supporting steel which are symmetrically arranged on the supporting frame, and movable limiting parts which can slide oppositely are arranged on the two pieces of supporting steel;

the movable limiting part comprises a movable plate, two fixing seats are symmetrically fixed on the movable plate, a connecting shaft penetrating through a shaft hole of the fixing seats is arranged between the fixing seats, blocking arms are sleeved at two ends of the connecting shaft, and blocking frames are fixed between the blocking arms.

2. The temporary support device for the large-span hyperbolic truss of the spherical-screen cinema as claimed in claim 1, wherein the connecting shaft is connected by a nut and a thread to limit the inclination angle of the blocking arm.

3. The device for temporarily supporting the large-span hyperbolic truss of the spherical-screen cinema as claimed in claim 1, wherein the supporting frame comprises two square steel pipes symmetrically fixed on the base, the two square steel pipes are fixed by fixing square steel, a fixing plate is arranged in each square steel pipe, a first supporting plate is fixed on each square steel pipe, a second supporting plate is slidably connected to one side of the first supporting plate, and a mounting seat is fixed on the second supporting plate.

4. The device for temporarily supporting the large-span hyperbolic truss of the ball-screen cinema as claimed in claim 3, wherein the first supporting plate and the second supporting plate are respectively provided with a first long hole and a second long hole.

5. The device for temporarily supporting the large-span hyperbolic truss of the spherical-screen cinema as claimed in claim 4, wherein the first support plate and the second support plate are sequentially positioned by passing through the first long hole and the second long hole through positioning bolts.

6. The temporary supporting device for the large-span hyperbolic truss of the ball-screen cinema as claimed in claim 3, wherein the base comprises a circular shell, a through hole is formed in the axis of the circular shell, a rotary table is rotatably arranged in the through hole, the fixing plate and the square steel pipe are fixed on the rotary table through a fixing bolt, a rectangular shell is fixed on the arc surface of the rotary table, the rectangular shell and the circular shell are communicated to form a fan-shaped cavity, and a bottom plate is detachably connected to the bottom of the fan-shaped cavity.

7. The temporary support device for the large-span hyperbolic truss of the spherical-screen cinema as claimed in claim 6, wherein an operation opening is formed in one side of the rectangular shell far away from the circular shell.

8. The device for temporarily supporting the large-span hyperbolic truss with the spherical-screen cinema as claimed in claim 6, wherein a transmission mechanism is arranged in the sector-shaped cavity, the transmission mechanism comprises an actuating assembly, the actuating assembly is connected with a driving assembly, and the driving assembly is a crank.

9. The temporary support device for the large-span hyperbolic truss of the ball-screen cinema as claimed in claim 8, wherein the actuating assembly comprises a rack, the rack is semicircular, the rack is fixed at the bottom of the rotary plate, the rack is engaged with a gear, a first transmission shaft is fixed in a shaft hole of the gear, one end of the first transmission shaft is rotatably connected with the circular shell, a first bevel gear is fixed at the other end of the first transmission shaft, the first bevel gear is engaged with a second bevel gear, and a second transmission shaft is fixed in a shaft hole of the second bevel gear.

10. A temporary support method for a large-span hyperbolic truss of a dome cinema, which is applied to the temporary support device for the large-span hyperbolic truss of the dome cinema as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps:

s2, longitudinally moving the second support plate along the first support plate, and positioning the second support plate through a positioning bolt after the second support plate is completed;