阅读说明：本技术 一种条形铝板吊顶饰面安装结构及其安装方法 (Strip-shaped aluminum plate ceiling facing mounting structure and mounting method thereof ) 是由 何静姿 朱福熙 翁延华 汪洋 刘海芪 于 2020-04-24 设计创作，主要内容包括：本发明公开了一种条形铝板吊顶饰面安装结构及其安装方法,该结构用于大型钢网架下的饰面板吊顶,包括固设于钢网架下的基架层、吊设于基架层下的多个龙骨、用以固定连接饰面板的安装件,和卡接固定于龙骨并承载安装件的卡接件,以及分设于卡接件两侧并与卡接件可拆卸连接用以将安装件限位于卡接件上的锁紧件。本发明的卡接件和锁紧件可以轻松、快速实现安装件与龙骨的装配,在装配过程中操作者无需在高空进行过多繁琐的铆、钉、焊等固定连接操作；操作者只需在钢网架结构上通过卡接件和锁紧件既可完成安装,无需由地面搭建大规模的高空脚手架,不仅减少了施工时间和成本,同时也降低了一定的施工风险。(The invention discloses a strip-shaped aluminum plate ceiling decorative surface mounting structure and a mounting method thereof, wherein the structure is used for a decorative panel ceiling under a large-sized steel net rack and comprises a base rack layer fixedly arranged under the steel net rack, a plurality of keels hung under the base rack layer, a mounting piece used for fixedly connecting a decorative panel, a clamping piece clamped and fixed on the keels and used for bearing the mounting piece, and locking pieces respectively arranged on two sides of the clamping piece and detachably connected with the clamping piece and used for limiting the mounting piece on the clamping piece. The clamping piece and the locking piece can easily and quickly realize the assembly of the mounting piece and the keel, and an operator does not need to perform excessive and complicated fixed connection operations such as riveting, nailing, welding and the like at high altitude in the assembly process; the operator only needs to both can accomplish the installation through joint spare and retaining member in the steel mesh frame structure, need not to build large-scale high altitude scaffold frame by ground, has not only reduced engineering time and cost, has also reduced certain construction risk simultaneously.)

1. The utility model provides a bar aluminum plate furred ceiling veneer mounting structure for decorative board (6) furred ceiling under large-scale steel rack, its characterized in that: including set firmly in the steel mesh frame layer under the steel mesh frame, hang and locate a plurality of fossil fragments (2) under the steel mesh frame layer, for fixed connection installed part (3) of decorative board (6), and the joint is fixed in fossil fragments (2) bear joint spare (4) of installed part (3), and divide and locate joint spare (4) both sides and with joint spare (4) can be dismantled the connection and be used for with installed part (3) are spacing in retaining member (5) on joint spare (4).

2. The strip aluminum sheet ceiling tile trim mounting structure of claim 1, wherein: the base frame layer comprises a first cross rod (11) fixedly connected with the steel net frame, a second cross rod (12) which is perpendicular to the first cross rod (11) and used for fixedly hanging the keel (2), and a U-shaped fixing piece (13) which is used for fixedly connecting the first cross rod (11) and the second cross rod (12).

3. The strip aluminum sheet ceiling tile trim mounting structure of claim 2, wherein: still include be used for with fossil fragments (2) hang establish be fixed in stock (14) on second horizontal pole (12), all preset on fossil fragments (2) and second horizontal pole (12) and supply stock (14) fixed connection's fixed orifices (21).

4. The strip aluminum sheet ceiling tile trim mounting structure of claim 1, wherein: be equipped with a plurality of joint portions (41) on joint spare (4), fossil fragments (2) both sides be equipped with joint portion (41) cooperation is used and is realized two fixed flanks (22) of joint, still be equipped with on joint portion (41) and be used for reducing fossil fragments (2) clearance's two bars are protruding (42).

5. The strip aluminum sheet ceiling tile trim mounting structure of claim 4, wherein: be equipped with a plurality of first rectangular holes (23) on flank (22), joint spare (4) are being corresponded be equipped with a plurality of second rectangular holes (43) on the position of first rectangular hole (23), still including run through in first rectangular hole (23) and with second rectangular hole (43) joint is used for right fossil fragments (2) carry out horizontal spacing locating part (7).

6. The strip aluminum sheet ceiling tile trim mounting structure of claim 5, wherein: the limiting piece (7) is arranged in a pi shape.

7. The strip aluminum sheet ceiling tile trim mounting structure of claim 1, wherein: the mounting piece (3) comprises a clamping and hanging part (31) used for being clamped and hung on the clamping and hanging piece (4), a fixing part (32) used for fixing the veneer (6), and a connecting part (33) used for fixedly connecting the fixing part (32) and the clamping and hanging part (31); the clamping piece (4) is provided with an arc-shaped bedplate (46) for supporting the clamping and hanging part (31).

8. The strip aluminum sheet ceiling tile trim mounting structure of claim 7, wherein: one end of the locking piece (5) is provided with a clamping part (51) detachably connected with the clamping piece (4), and the other end of the locking piece is provided with an anti-falling part (52) used for limiting the connecting part (33) and preventing the connecting part from falling off the arc-shaped bedplate (46); the clamping part (51) comprises a plurality of bayonets (53) for adjusting the limiting distance of the anti-falling part (52); the clamping piece (4) is provided with a butting part (44) which is in limit butting with the clamping part (51).

9. The strip aluminum sheet ceiling tile trim mounting structure of claim 8, wherein: be equipped with on joint spare (4) and be used for preventing buckling portion (45) of the vertical displacement of retaining member (5), be equipped with on retaining member (5) and be used for supplying strip hole (54) that buckling portion (45) passed.

10. A method of installing a strip aluminum ceiling tile trim mounting structure as claimed in any one of claims 1 to 9, comprising the steps of:

s1: a construction platform for an operator to perform construction operation is built on the steel net rack;

s2: fixedly connecting a first cross bar (11) and a second cross bar (12) on a construction platform;

s3: sleeving the clamping piece (4) on the keel (2), moving to a corresponding position, and hoisting and fixing the keel (2) with the clamping piece (4) on a second cross beam through the anchor rod (14);

s4: fix in mounting part (3) earlier on decorative board (6), will have mounting part (3) of decorative board (6) again to lift by crane and be fixed in fossil fragments (2) through joint spare (4), during fixed: on placing the arc mesa with the card portion of hanging (31) of installed part (3) at first, adjust retaining member (5) again and carry out the hasp to the spacing distance of connecting portion (33), and carry out vertical direction's spacing through wrench movement portion (45) to retaining member (5), pass first rectangular hole (23) and second rectangular hole (43) through locating part (7) at last and realize spacing to the horizontal direction of fossil fragments (2), accomplish the installation.

Technical Field

The invention relates to the technical field of suspended ceilings, in particular to a strip-shaped aluminum plate suspended ceiling facing mounting structure and a mounting method thereof.

Background

With the rapid development of the economy of China, the living standard of people is continuously improved, and in order to meet the increasing demands of the physical and cultural activities of people, a plurality of large-scale public buildings such as airports, convention and exhibition centers, gymnasiums and the like are successively built in China in various regions. These large scale public buildings all have an oversized ceiling. Because the mounting structure and the form of furred ceiling are more single, traditional furred ceiling installation generally all adopts rivets, the nail, fixed modes such as welding carry out the fixed of fossil fragments and decorative board, need the constructor undoubtedly to take the decorative board to fossil fragments below, carry out the fixed operation to down and on again, scaffold frame must be set up in the below to this kind of construction mode, install the furred ceiling from bottom to top, workman's installation lifts the roughness and the gap width of tired No. to say the furred ceiling, the seam straightness accuracy also can not be guaranteed, and set up and demolish scaffold frame and all need be long time, it is great to the time limit for a project.

CN204940662U discloses a suspended ceiling mounting structure of a large auditorium, which is characterized by comprising a steel net rack, a bolt ball, a C-shaped galvanized steel main keel, a C-shaped galvanized steel auxiliary keel, a first galvanized angle, galvanized angle steel, a second galvanized angle, a third galvanized angle, a hanging bar and a light steel keel gypsum board, wherein the bolt ball is arranged on the steel net rack, the first galvanized angle is fixedly connected with the bolt ball through a first connecting bolt, one end of the first galvanized angle is fully welded with one end of the galvanized angle steel, the other end of the galvanized angle steel is fixedly connected with the C-shaped galvanized steel main keel through a second connecting bolt, one side of the second galvanized angle is fully welded on the galvanized angle steel at the lower end of the C-shaped galvanized steel main keel, the other side of the second galvanized angle is fixedly connected with the C-shaped galvanized steel main keel through a third connecting bolt, and the C-shaped galvanized steel auxiliary keel is vertically arranged above the C-shaped galvanized steel main keel, and the C-shaped galvanized steel main keel and the C-shaped galvanized steel auxiliary keel are fixedly connected at the joint through a third galvanized angle joint, the hanging ribs are arranged below the C-shaped galvanized steel auxiliary keel, and the hanging ribs are fixedly connected with the light steel keel gypsum board. The technical scheme of the patent reduces the overall weight of the structure, reduces the consumption of steel, saves the cost, shortens the construction period and improves the working efficiency; just the utility model discloses the connected mode of well adoption C type galvanized steel main joist and C type galvanized steel false keel mainly connects through the bolt, mainly adopts welded mode to connect among the prior art and compares the installation simple more, basically need not the welding, can not cause environmental pollution.

The installation procedure provided by this patent, however, involves the assembly of rivets and the installation of bolts at a plurality of corner joints, which undoubtedly still requires the operator to have to look around both the upper and lower sides of the plasterboard during the operation, and to perform a plurality of riveting operations on the erected scaffolding.

Disclosure of Invention

The invention aims to provide a mounting structure and a mounting method for a strip-shaped aluminum plate ceiling facing, aiming at the defects of the prior art.

The invention provides a strip-shaped aluminum plate ceiling decorative surface mounting structure for a decorative surface plate ceiling under a large-size steel net rack, which comprises a base frame layer fixedly arranged under the steel net rack, a plurality of keels hung under the base frame layer, a mounting piece used for fixedly connecting a decorative surface plate, a clamping piece clamped and fixed on the keels and used for bearing the mounting piece, and locking pieces respectively arranged on two sides of the clamping piece and detachably connected with the clamping piece and used for limiting the mounting piece on the clamping piece.

Furthermore, the base frame layer comprises a first cross rod fixedly connected with the steel net rack, a second cross rod vertically arranged with the first cross rod and used for fixedly hanging the keel, and a U-shaped fixing piece used for fixedly connecting the first cross rod and the second cross rod.

Further, still include be used for with fossil fragments hang establish be fixed in the stock on the second horizontal pole, all preset the fixed orifices that supplies stock fixed connection on fossil fragments and the second horizontal pole.

Further, be equipped with a plurality of joint portions on the joint spare, the fossil fragments both sides be equipped with joint portion cooperation is used and is realized the fixed two flanks of joint, still be equipped with in the joint portion and be used for reducing fossil fragments clearance's two bars are protruding.

Furthermore, the side wings are provided with a plurality of first rectangular holes, the clamping piece is provided with a plurality of second rectangular holes at the positions corresponding to the first rectangular holes, and the side wings further comprise limiting pieces which penetrate through the first rectangular holes and are clamped with the second rectangular holes to horizontally limit the keels,

furthermore, the limiting piece is arranged in a pi shape.

Furthermore, the mounting piece comprises a clamping and hanging part used for being clamped and hung on the clamping and hanging part, a fixing part used for fixing the veneer, and a connecting part used for fixedly connecting the fixing part and the clamping and hanging part; the clamping piece is provided with an arc-shaped bedplate for supporting the clamping and hanging part.

Furthermore, one end of the locking piece is provided with a clamping part which is detachably connected with the clamping piece, and the other end of the locking piece is provided with an anti-falling part which is used for limiting the connecting part to prevent the connecting part from falling off the arc-shaped bedplate; the clamping part comprises a plurality of bayonets for adjusting the limiting distance of the anti-falling part; the clamping piece is provided with a butting part which is butted with the limiting part of the clamping part.

Further, be equipped with on the joint spare and be used for preventing the distortion portion of the vertical displacement of retaining member, be equipped with on the retaining member and be used for supplying the strip hole that distortion portion passed.

A mounting method of a strip-shaped aluminum plate ceiling decoration surface mounting structure comprises the following steps:

s1: a construction platform for an operator to perform construction operation is built on the steel net rack;

s2: fixedly connecting the first cross rod and the second cross rod on the construction platform;

s3: sleeving the clamping piece on the keel, moving the clamping piece to a corresponding position, and hoisting and fixing the keel with the clamping piece on the second cross beam through the anchor rod;

s4: on being fixed in the installed part earlier with the decorative board, will have the installed part of decorative board again to lift by crane and be fixed in fossil fragments through the joint spare on, during fixed: on the arc mesa was placed to the card portion of hanging of at first installed part, adjusted the retaining member again and carried out the hasp to the spacing distance of connecting portion to carry out vertical direction spacing to the retaining member through wrench movement distortion portion, pass first rectangular hole and second rectangular hole through the locating part at last and realize spacing to the horizontal direction of fossil fragments, accomplish the installation.

The mounting structure and the mounting method for the suspended ceiling veneer of the strip-shaped aluminum plate have the following beneficial effects that:

(1) the clamping piece and the locking piece can easily and quickly realize the assembly of the mounting piece and the keel, and an operator does not need to perform excessive and complicated fixed connection operations such as riveting, nailing, welding and the like at high altitude in the assembly process;

(2) an operator can complete installation only through the clamping piece and the locking piece on the steel mesh frame structure, and a large-scale high-altitude scaffold is not required to be built on the ground, so that the construction time and cost are reduced, and a certain construction risk is reduced;

(3) the mounting structure provided by the invention can ensure that the construction of the large steel truss structure veneer ceiling is carried out by lifting from top to bottom without going from bottom to top, effectively avoids the lifting of various ceiling modules by a constructor, reduces the labor intensity and risks, and further improves the working efficiency;

(4) the double-layer cross beam structure of the base frame layer can effectively strengthen the strength of the top structure and can better realize the adjustment design of the flatness and the keel layout;

(5) the keel hoisting device can directly and quickly realize hoisting and fixing of the keel through the anchor rod, and is simple to operate and stable in hoisting;

(6) through the ingenious design of the pi-shaped limiting part and the twisting part, the displacement of the mounting part in the horizontal and vertical directions can be better prevented, the fixed connection quality of the mounting part and the keel is further enhanced, and the stability of the whole structural system is effectively ensured;

(7) the limiting distance of the anti-falling part of the locking part can be better adjusted through the plurality of bayonets, so that the locking part can be suitable for mounting and limiting installation parts of various sizes;

(8) only need set up the operation that the whole furred ceiling had both been realized to the construction platform on the steel rack for the large tracts of land furred ceiling construction period shortens, and furred ceiling roughness, gap width and seam straightness accuracy quality improve, reduce the workman and construct the degree of difficulty, solve the difficult, with high costs problem of later maintenance construction.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

Fig. 1 is an installation schematic view of a strip-shaped aluminum plate ceiling facing installation structure according to an embodiment of the invention;

FIG. 2 is a schematic diagram illustrating a clamping manner of a mounting structure for a ceiling facing of a strip-shaped aluminum plate according to an embodiment of the present invention;

FIG. 3 is a side view of a strip aluminum sheet ceiling tile trim mounting structure according to an embodiment of the present invention;

fig. 4 is a schematic view of a clamping combination structure of a mounting structure of a strip-shaped aluminum plate ceiling facing according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a clamping member of a mounting structure for a ceiling facing of a strip-shaped aluminum plate according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a locking member of a mounting structure of a strip-shaped aluminum plate ceiling facing according to an embodiment of the invention;

fig. 7 is a schematic structural diagram of a limiting member of a mounting structure of a ceiling facing made of strip-shaped aluminum plates according to an embodiment of the present invention.

In the figure: 11-a first cross bar, 12-a second cross bar, 13-U-shaped fixing pieces, 14-anchor rods, 2-keels, 21-fixing holes, 22-side wings, 23-first rectangular holes, 3-mounting pieces, 31-clamping hanging parts, 32-fixing parts, 33-connecting parts, 4-clamping parts, 41-clamping parts, 42-strip-shaped protrusions, 43-second rectangular holes, 44-abutting parts, 45-twisting parts, 46-arc-shaped table plates, 5-locking parts, 51-clamping parts, 52-anti-falling parts, 53-clamping openings, 54-strip-shaped holes, 6-decorative panels and 7-limiting parts.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 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 invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Please refer to fig. 1 to 7. The invention provides a strip-shaped aluminum plate ceiling decorative surface mounting structure, which is used for a decorative panel 6 ceiling under a large steel net rack and comprises a base frame layer fixedly arranged under the steel net rack, a plurality of keels 2 hung under the base frame layer, a mounting piece 3 used for fixedly connecting the decorative panel 6, a clamping piece 4 clamped and fixed on the keels 2 and used for bearing the mounting piece 3, and locking pieces 5 respectively arranged on two sides of the clamping piece 4 and detachably connected with the clamping piece 4 and used for limiting the mounting piece 3 on the clamping piece 4.

The clamping piece 4 and the locking piece 5 can easily and quickly realize the assembly of the mounting piece 3 and the keel 2, and an operator does not need to perform excessive and complicated fixed connection operations such as riveting, nailing, welding and the like at high altitude in the assembly process; an operator can complete installation only through the clamping piece 4 and the locking piece 5 on the steel mesh frame structure, and does not need to build a large-scale high-altitude scaffold from the ground, so that the construction time and cost are reduced, and a certain construction risk is reduced; the mounting structure provided by the invention can ensure that the construction of the suspended ceiling of the decorative panel 6 with the large steel truss structure can be carried out from top to bottom without going from bottom to top, thereby effectively avoiding the lifting of various suspended ceiling modules by a constructor, reducing the labor intensity and risks and further improving the working efficiency.

The base frame layer comprises a first cross bar 11 fixedly connected with the steel net frame, a second cross bar 12 which is perpendicular to the first cross bar 11 and used for fixedly hanging the keel 2, and a U-shaped fixing piece 13 used for fixedly connecting the first cross bar 11 and the second cross bar 12.

Because steel lattice framed structure's intensity is enough to support whole operation job site, so can directly build construction platform on steel lattice framed structure, supply a plurality of constructors concurrent operation, construction platform also is lattice framed, is equipped with the passageway that supplies walking with and a plurality of construction operation mouth, in order to avoid construction operation mouth's danger, the accessible installs the safety net additional. As for the transportation of the steel and the modules, each structure can be directly hoisted to the installation position on the construction platform in a rope hoisting mode, and the first cross bar 11 and the second cross bar 12 adopted by the embodiment of the invention are made of C-shaped steel, so that not only can the structural strength be ensured, but also a plurality of installation sites can be provided, and the installation operation of the keel 2 is facilitated.

The keel frame further comprises an anchor rod 14 used for hanging and fixing the keel 2 on the second cross rod 12, and fixing holes 21 for fixedly connecting the anchor rod 14 are preset in the keel 2 and the second cross rod 12. The anchor rod 14 passes through the fixing hole 21 from the lower part of the keel 2 and then is fixed with the fixing hole 21 on the second cross bar 12, so that the hoisting is realized. The concrete embodiment of the invention adopts the 'n' -shaped keel 2, has light weight, is beneficial to reducing the load of the suspended ceiling of the building,

be equipped with a plurality of joint portions 41 on the joint 4, 2 both sides of fossil fragments are equipped with and use the fixed both sides wing 22 of realization joint with joint portion 41 cooperation, still are equipped with two bar-shaped archs 42 that are used for reducing 2 clearance of fossil fragments on the joint portion 41. Its purpose not only can carry out fore-and-aft spacing to fossil fragments 2, reduces fossil fragments 2's clearance, and the structural strength of this kind of structural arch reinforcing joint spare 4 that also can be better simultaneously avoids appearing warping under the atress transships or the uneven condition of atress.

The side wings 22 are provided with a plurality of first rectangular holes 23, the clamping piece 4 is provided with a plurality of second rectangular holes 43 at the positions corresponding to the first rectangular holes 23, and also comprises a limiting piece 7 which penetrates through the first rectangular holes 23 and is clamped with the second rectangular holes 43 to horizontally limit the keel 2,

the limiting piece 7 is arranged in a pi shape. The pi-shaped limiting piece 7 has certain structural elasticity, two side supporting legs are directly pressed and loaded when the keel 2 is installed, and the keel is released and reset when passing through the first rectangular hole 23 and the second rectangular hole 43, so that the horizontal displacement of the keel 2 can be realized.

The mounting member 3 comprises a clamping part 31 for clamping and hanging on the clamping member 4, a fixing part 32 for fixing the veneer 6, and a connecting part 33 for fixedly connecting the fixing part 32 and the clamping and hanging part 31; the engaging member 4 is provided with an arc-shaped platen 46 for supporting the engaging portion 31.

One end of the locking piece 5 is provided with a clamping part 51 which is detachably connected with the clamping piece 4, and the other end is provided with an anti-falling part 52 which is used for limiting the connecting part 33 and preventing the connecting part from falling off the arc-shaped bedplate 46; the engaging portion 51 includes a plurality of notches 53 for adjusting the spacing distance of the retaining portion 52, and the engaging piece 4 is provided with an abutting portion 44 for spacing abutment with the engaging portion 51. The engaging portion 51 is provided at both sides thereof in a plurality of teeth-like pieces, and the abutting portion 44 is provided in a "Z" shape.

Be equipped with on joint 4 and be used for preventing the distortion portion 45 of the vertical displacement of retaining member 5, be equipped with on retaining member 5 and be used for supplying the strip-shaped hole 54 that distortion portion 45 passed. Twist portion 45 and 4 integral type designs of joint spare to perpendicular with 4 main parts of joint spare, after screens portion 51 and butt portion 44 cooperation, when retaining member 5 was pressed in the upset, anticreep portion 52 was just in time spacing with the laminating of connecting portion 33, prevented to move outward, and twist portion 45 just in time passes bar hole 54, and after the adjustment, the twist portion 45 that twists that deflects realizes locking, avoids retaining member 5 to bounce back not hard up.

A mounting method of a strip-shaped aluminum plate ceiling decoration surface mounting structure comprises the following steps:

s1: a construction platform for an operator to perform construction operation is built on the steel net rack;

s2: fixedly connecting a first cross bar 11 and a second cross bar 12 on a construction platform;

s3: sleeving the clamping piece 4 on the keel 2, moving the keel to a corresponding position, and hoisting and fixing the keel 2 with the clamping piece 4 on a second cross beam through the anchor rod 14;

s4: on being fixed in installed part 3 earlier with decorative board 6, will have installed part 3 of decorative board 6 to lift by crane again and be fixed in fossil fragments 2 through joint spare 4 on, during fixed: place the arc mesa with the card of installed part 3 portion 31 at first on, adjust retaining member 5 again and carry out the hasp to the spacing distance of connecting portion 33 to carry out vertical direction spacing through wrench movement portion 45 to retaining member 5, pass first rectangular hole 23 and second rectangular hole 43 through locating part 7 at last and realize spacing to fossil fragments 2's horizontal direction, accomplish the installation.

The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.