Steel structure unit and steel structure system

文档序号:646238 发布日期:2021-05-14 浏览:43次 中文

阅读说明:本技术 一种钢结构单元及钢结构系统 (Steel structure unit and steel structure system ) 是由 沈建芳 于 2020-12-30 设计创作,主要内容包括:本发明公开了钢结构单元及钢结构系统包括吊顶面板,所述吊顶面板的上方设有横梁机构,所述横梁机构包括横杆、横筒、锥形筒和橡胶环,所述横杆位于多个吊顶面板的上方,所述横杆的外壁左右两侧均套接有横筒,所述横筒的内壁与横杆的外壁间隙配合。该钢结构单元及钢结构系统,通过吊顶面板和横梁机构之间配合,操作人员可将锥形筒进行逆时针转动,使橡胶环与横杆相分离,这时操作人员可以调节两个横筒外侧端部之间的距离,可以使两侧横筒的外侧端部与不同墙距之间进行安装,无需操作人员在安装现场进行测量以及使用无齿锯进行裁切,能够降低操作人员的体能消耗。(The invention discloses a steel structure unit and a steel structure system, which comprise suspended ceiling panels, wherein a beam mechanism is arranged above the suspended ceiling panels, the beam mechanism comprises cross rods, transverse cylinders, conical cylinders and rubber rings, the cross rods are positioned above the suspended ceiling panels, the transverse cylinders are sleeved on the left side and the right side of the outer wall of each cross rod, and the inner walls of the transverse cylinders are in clearance fit with the outer walls of the cross rods. This steel structural unit and steel structural system, cooperation between through furred ceiling panel and crossbeam mechanism, operating personnel can carry out anticlockwise rotation with a toper section of thick bamboo, make rubber ring and horizontal pole phase separation, at this moment operating personnel can adjust the distance between two horizontal section of thick bamboo outside ends, can make the outside end of the horizontal section of thick bamboo of both sides and different walls apart from installing, need not operating personnel and measure and use the toothless saw to cut at the installation site, can reduce operating personnel's physical stamina consumption.)

1. The utility model provides a steel structural unit and steel structural system, includes ceiling panel (1), its characterized in that: a stability augmentation mechanism (4) is arranged inside the ceiling panel (1), and a beam mechanism (2) is arranged above the ceiling panel (1);

the beam mechanism (2) comprises a cross rod (201), a cross cylinder (202), a conical cylinder (203) and a rubber ring (204);

the utility model discloses a ceiling structure, including horizontal pole (201), the outer wall left and right sides of horizontal pole (201) all cup jointed horizontal section of thick bamboo (202), the inner wall of horizontal section of thick bamboo (202) and the outer wall clearance fit of horizontal pole (201), the outer wall inboard of horizontal section of thick bamboo (202) has cup jointed a toper section of thick bamboo (203), the inner wall of toper section of thick bamboo (203) links to each other with the outer wall screw thread of horizontal section of thick bamboo (202), inner wall one side of horizontal section of thick bamboo (202) is equipped with rubber ring (204), the outer wall of rubber ring (204) links to each other with the inner wall of horizontal section of thick bamboo (202) is fixed, the inner wall of rubber ring (204) links to each other with the contact surface of horizontal pole (201) is fixed, the outside end of horizontal.

2. The steel structure unit and the steel structure system as claimed in claim 1, wherein: the outer wall of the conical cylinder (203) is provided with grinding grains.

3. The steel structure unit and the steel structure system as claimed in claim 1, wherein:

the mounting mechanism (3) comprises a transverse groove (301), a pressure spring (302), a square block (303), a support rod (304), a resisting plate (305), an anti-skid pad (306), a through groove (307), a convex rod (308), a rotating rod (309), a hook (310) and a hanging ring (310);

the transverse groove (301) is arranged at the outer end of the transverse barrel (202), a pressure spring (302) is arranged at the inner end of the transverse groove (301), the pressure spring (302) is fixedly connected with the contact surface of the transverse groove (301), a square block (303) is arranged at the other end of the pressure spring (302), the square block (303) is fixedly connected with the contact surface of the pressure spring (302), a support rod (304) is arranged on the other surface of the square block (303), the support rod (304) is fixedly connected with the contact surface of the square block (303), a resisting plate (305) is arranged at the other end of the support rod (304), the resisting plate (305) is fixedly connected with the contact surface of the support rod (304), an anti-skid pad (306) is arranged on the other surface of the resisting plate (305), a through groove (307) is arranged at the bottom end of the inner wall of the transverse groove (301), and a convex rod (308) is arranged in the through groove (305), the utility model discloses a horizontal section of thick bamboo, including protruding pole (308), nose bar (309), bull stick (308) and square (303), protruding pole (308) and the contact surface clearance fit who leads to groove (307), the top of protruding pole (308) is fixed continuous with the bottom of square (303), the bottom of protruding pole (308) is equipped with bull stick (309), bull stick (309) link to each other with protruding pole (308) are articulated through the round pin axle, the other end of bull stick (309) is equipped with couple (310), couple (310) and the contact surface of bull stick (309) are fixed continuous, the right side of couple (310) has been hung link (311), link (311) are fixed continuous with the contact surface of horizontal section of thick bamboo (202).

4. The steel structure unit and the steel structure system as claimed in claim 3, wherein: convex and concave edges are processed on the outer surface of the anti-slip pad (306).

5. The steel structure unit and the steel structure system as claimed in claim 1, wherein:

the stability augmentation mechanism (4) comprises a short rod (401), a strip-shaped plate (402), a rubber pad (403), a convex block (404), a vertical rod (405) and a rubber block (406);

short pole (401) are located the top of furred ceiling panel (1), the bottom rigid coupling of short pole (401) has strip board (402), the equal rigid coupling in upper surface both sides of strip board (402) has rubber pad (403), rubber pad (403) offset tightly with the inner wall of furred ceiling panel (1), the lower surface rigid coupling of strip board (402) has lug (404), the bottom of lug (404) articulates there is pole setting (405), the bottom and the rubber block (406) of pole setting (405) are fixed continuous, rubber block (406) offset tightly with the inner wall of furred ceiling panel (1).

6. The steel structure unit and the steel structure system as claimed in claim 5, wherein: the short rod (401) is connected with the transverse cylinder (202) through a connecting mechanism (5);

the connecting mechanism (5) comprises a transverse plate (501), a sliding groove (502), a sliding block (503) and a screw rod (504);

the lower surface of diaphragm (501) is fixed continuous with the top of quarter butt (401), spout (502) have all been seted up to the upper surface left and right sides of diaphragm (501), the inside slip joint of spout (502) has slider (503), the top threaded connection of slider (503) has lead screw (504), the outer wall top and the horizontal section of thick bamboo (202) screw thread of lead screw (504) link to each other.

Technical Field

The invention relates to the technical field of buildings, in particular to a steel structure unit and a steel structure system.

Background

The steel structure is a structure composed of steel materials, is one of main building structure types, and mainly comprises steel beams, steel columns, steel trusses and other members made of section steel, steel plates and the like, and adopts the processes of rust removal and rust prevention such as silanization, pure manganese phosphorization, washing and drying, galvanization and the like, all members or parts are usually connected by welding lines, bolts or rivets, because of light dead weight and simple and convenient construction, the steel structure is widely applied to the fields of large-scale factory buildings, venues, super-high buildings and the like, is easy to rust, generally, the steel structure needs rust removal, galvanization or coating and needs to be regularly maintained, compared with other constructions, the steel structure has the advantages in use, design, construction and comprehensive economy, has low manufacturing cost and can be moved at any time, and the steel structure system has the comprehensive advantages of light dead weight, easy installation, short construction period, good earthquake resistance, quick investment recovery, less, the plastic property and the good impact resistance of toughness are good, so light steel materials can be selected for constructing the component of the indoor ceiling decoration overhead part at present, the light steel structure indoor ceiling decoration overhead at the present stage needs to be measured on a construction site during installation, a toothless saw is used for cutting materials, and the physical consumption of installation personnel is large.

And usually install with the cooperation expansion bolts when installing above the wall body, need punch and destroy the wall body comparatively troublesome and time-consuming, the decoration suspended ceiling panel stability of connecting in the below is relatively poor simultaneously, easily produces the displacement when receiving external force influence, and it is not practical enough to need operating personnel to carry out the operation of regularly resetting.

Disclosure of Invention

The invention aims to provide a steel structure unit and a steel structure system, and aims to solve the problems that the existing light steel structure indoor ceiling decoration overhead provided in the background technology needs to be measured on a construction site during installation, and the physical consumption of installers is large due to the fact that materials are cut by using a toothless saw.

In order to achieve the purpose, the invention provides the following technical scheme: a steel structure unit and a steel structure system comprise a ceiling panel, wherein a beam mechanism is arranged above the ceiling panel;

the beam mechanism comprises a cross rod, a transverse cylinder, a conical cylinder and a rubber ring;

the horizontal pole is located the top of a plurality of furred ceiling panels, horizontal section of thick bamboo has all been cup jointed to the outer wall left and right sides of horizontal pole, the inner wall of horizontal section of thick bamboo and the outer wall clearance fit of horizontal pole, a toper section of thick bamboo has been cup jointed to the outer wall inboard of horizontal section of thick bamboo, the inner wall of a toper section of thick bamboo links to each other with the outer wall screw thread of horizontal section of thick bamboo, inner wall one side of horizontal section of thick bamboo is equipped with the rubber ring, the outer wall of rubber ring links to each other with the inner wall of horizontal section of thick bamboo is fixed.

Preferably, the outer wall of the conical cylinder is provided with grinding lines.

Preferably, an installation mechanism is arranged at the outer side end of the transverse cylinder;

the mounting mechanism comprises a transverse groove, a pressure spring, a square block, a support rod, a supporting plate, an anti-slip pad, a through groove, a convex rod, a rotating rod, a hook and a hanging ring;

the transverse groove is formed in the outer side end of the transverse cylinder, a pressure spring is arranged at the inner end of the transverse groove, the pressure spring is fixedly connected with a contact surface of the transverse groove, a square block is arranged at the other end of the pressure spring, the square block is fixedly connected with the contact surface of the pressure spring, a support rod is arranged on the other side of the square block, the support rod is fixedly connected with the contact surface of the square block, a supporting plate is arranged at the other end of the support rod, the supporting plate is fixedly connected with the contact surface of the support rod, a non-slip mat is arranged on the other side of the supporting plate, the non-slip mat is fixedly connected with the contact surface of the supporting plate, a through groove is formed in the bottom end of the inner wall of the transverse groove, a convex rod is arranged inside the through groove, the convex rod penetrates through one part of the transverse cylinder through the through groove, the convex rod is in clearance fit with the contact surface of the through groove, the top end of, the other end of the rotating rod is provided with a hook, the hook is fixedly connected with the contact surface of the rotating rod, the right side of the hook is connected with a hanging ring in a hanging mode, and the hanging ring is fixedly connected with the contact surface of the transverse cylinder.

Preferably, the outer surface of the non-slip mat is provided with convex-concave edges.

Preferably, a stability augmentation mechanism is arranged inside the suspended ceiling panel;

the stability augmentation mechanism comprises a short rod, a strip-shaped plate, a rubber pad, a convex block, a vertical rod and a rubber block;

the utility model discloses a ceiling board, including the quarter butt, the quarter butt is located the top of ceiling panel, the bottom rigid coupling of quarter butt has the strip board, the equal rigid coupling in upper surface both sides of strip board has the rubber pad, the inner wall of rubber pad and ceiling panel offsets tightly, the lower surface rigid coupling of strip board has the lug, the bottom of lug articulates there is the pole setting, the bottom and the rubber block of pole setting are fixed to be linked to each other, the rubber block offsets tightly with the inner wall of ceiling panel.

Preferably, the short rod is connected with the transverse cylinder through a connecting mechanism;

the connecting mechanism comprises a transverse plate, a sliding chute, a sliding block and a screw rod;

the lower surface of diaphragm links to each other with the top stationary phase of quarter butt, the spout has all been seted up to the upper surface left and right sides of diaphragm, the inside slip joint of spout has the slider, the top threaded connection of slider has the lead screw, the outer wall top and the horizontal section of thick bamboo screw thread of lead screw link to each other.

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

1. according to the steel structure unit and the steel structure system, the ceiling panel and the beam mechanism are matched, an operator can rotate the conical cylinder anticlockwise to separate the rubber ring from the cross rod, the operator can adjust the distance between the outer side ends of the two transverse cylinders, the outer side ends of the transverse cylinders on two sides can be installed between different wall distances, the operator does not need to measure on an installation site and cut by using a toothless saw, and the physical consumption of the operator can be reduced.

2. According to the invention, through the matching among the ceiling panel, the beam mechanism and the mounting mechanism, after the distance between the outer side ends of the two transverse cylinders is adjusted, the transverse cylinders are positioned above the space between the wall surfaces at two sides, then the hooks and the hanging rings are separated, at the moment, the pressure springs in the transverse grooves can rebound, the square blocks, the supporting rods and the bottom plate move outwards together, the anti-slip mat can be abutted against the wall surfaces, the mounting between the beam mechanism and the wall body can be completed, the mounting is not required to be carried out by using expansion bolts during the mounting, and the wall body is not required to be damaged by punching, so that.

3. According to the invention, through the matching between the ceiling panel and the stability augmentation mechanism, after the ceiling panel is sleeved on the outer surface of the strip plate by an operator, the operator applies force to rotate the opposite rod, so that the top end of the rubber block is tightly propped against the inner wall of the ceiling panel, the stability of the ceiling panel can be enhanced, the ceiling panel is not easily influenced by external force to generate displacement in the subsequent use process, and the ceiling panel is more practical without the need of the operator for periodic reset operation; through the ceiling panel, increase the cooperation between steady mechanism, crossbeam mechanism, installation mechanism and the coupling mechanism, operating personnel all carries out the screw thread through the lead screw and links to each other between slider and the horizontal section of thick bamboo, can install fast between horizontal section of thick bamboo and the horizontal bar board, and each part of being convenient for occupies less space and packs the transportation, does benefit to and uses widely.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection of the cross deck, ceiling panel and stability augmentation mechanism of FIG. 1;

FIG. 3 is a schematic view of the connection structure of the cross-barrel and the mounting mechanism of FIG. 1;

FIG. 4 is a schematic view of a connection structure of the cross bar, the transverse cylinder and the tapered cylinder of FIG. 1;

FIG. 5 is a schematic view of a connection structure of the transverse plate, the sliding groove and the sliding block in FIG. 1;

fig. 6 is a schematic view of a connection structure of the screw and the horizontal tube in fig. 1.

In the figure: 1. the suspended ceiling comprises a suspended ceiling panel, 2, a beam mechanism, 201, a cross rod, 202, a cross cylinder, 203, a conical cylinder, 204, a rubber ring, 3, a mounting mechanism, 301, a cross groove, 302, a pressure spring, 303, a square block, 304, a supporting rod, 305, a supporting plate, 306, an anti-slip pad, 307, a through groove, 308, a convex rod, 309, a rotating rod, 310, a hook, 311, a hanging ring, 4, a stability augmentation mechanism, 401, a short rod, 402, a strip-shaped plate, 403, a rubber pad, 404, a convex block, 405, a vertical rod, 406, a rubber block, 5, a connecting mechanism, 501, a cross plate, 502, a sliding groove, 503, a sliding block, 504 and a screw rod.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the 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 invention.

Referring to fig. 1-6, the present invention provides a technical solution: a steel structure unit and a steel structure system comprise a ceiling panel 1, a beam mechanism 2 is arranged above the ceiling panel 1, the beam mechanism 2 comprises a cross rod 201, a transverse cylinder 202, a conical cylinder 203 and rubber rings 204, the cross rod 201 is arranged above a plurality of ceiling panels 1, the transverse cylinder 202 is sleeved on the left side and the right side of the outer wall of the cross rod 201, the inner wall of the transverse cylinder 202 is in clearance fit with the outer wall of the cross rod 201, the conical cylinder 203 is sleeved on the inner side of the outer wall of the transverse cylinder 202, the inner wall of the conical cylinder 203 is in threaded connection with the outer wall of the transverse cylinder 202, the rubber rings 204 are arranged on one side of the inner wall of the transverse cylinder 202, the rubber rings 204 are made of rubber, the friction force of the inner wall of the transverse cylinder 202 can be enhanced, the outer wall of the rubber ring 204 is fixedly connected with the inner wall of the transverse cylinder 202, the inner wall of the rubber ring 204 is fixedly connected with the contact surface of the cross rod 201, the outer wall of the conical cylinder 203 is provided with abrasive grains, and the abrasive grains 203 are convenient for an operator to apply force to the conical cylinder 203;

through cooperation between furred ceiling panel and the crossbeam mechanism, operating personnel can carry out anticlockwise rotation with a toper section of thick bamboo, makes rubber ring and horizontal pole phase separation, and operating personnel can adjust the distance between two horizontal section of thick bamboo outside ends at this moment, can make the outside end of the horizontal section of thick bamboo of both sides and different walls apart from installing, need not operating personnel and measure and use the toothless saw to cut at the installation site, can reduce operating personnel's physical consumption.

The outer side end of the transverse cylinder 202 is provided with the mounting mechanism 3, the mounting mechanism 3 comprises a transverse groove 301, a pressure spring 302, a square 303, a support rod 304, a resisting plate 305, an anti-skid pad 306, a through groove 307, a convex rod 308, a rotating rod 309, a hook 310 and a hanging ring 310, the transverse groove 301 is arranged at the outer side end of the transverse cylinder 202, the pressure spring 302 is arranged at the inner end of the transverse groove 301, the coefficient of the pressure spring 302 is 5-50N/CM, the pressure spring 302 is fixedly connected with the contact surface of the transverse groove 301, the other end of the pressure spring 302 is provided with the square 303, the square 303 is fixedly connected with the contact surface of the pressure spring 302, the other side of the square 303 is provided with the support rod 304, the support rod 304 is fixedly connected with the contact surface of the square 303, the other end of the support rod 304 is provided with the resisting plate 305, the resisting plate 305 is fixedly connected with the contact surface of the support rod 304, the other side of, the anti-slip mat 306 is fixedly connected with the contact surface of the resisting plate 305, the bottom end of the inner wall of the transverse groove 301 is provided with a through groove 307, a convex rod 308 is arranged inside the through groove 307, the convex rod 308 penetrates through one part of the transverse cylinder 202 through the through groove 307, the convex rod 308 is in clearance fit with the contact surface of the through groove 307, the top end of the convex rod 308 is fixedly connected with the bottom end of the square block 303, the bottom end of the convex rod 308 is provided with a rotating rod 309, the rotating rod 309 is hinged with the convex rod 308 through a pin shaft, the other end of the rotating rod 309 is provided with a hook 310, the hook 310 is fixedly connected with the contact surface of the rotating rod 309, the right side of the hook 310 is hung with a hanging ring 311, the hanging ring 311 is fixedly connected with the contact surface of the transverse cylinder 202, the outer surface of the anti-;

through furred ceiling panel, cooperation between crossbeam mechanism and the installation mechanism, accomplish the back with the distance modulation between two horizontal section of thick bamboo outside ends, make it be located between the both sides wall top, then separating couple and link, at this moment the inside pressure spring of transverse groove can kick-back, make the square, branch and bottom plate together move to the outside, can make between slipmat and the wall offset tightly, can accomplish the installation between crossbeam mechanism and the wall body, need not to use expansion bolts to install during, it is comparatively labour saving and time saving to need not punch the destruction wall body.

The ceiling panel 1 is internally provided with a stability enhancing mechanism 4, the stability enhancing mechanism 4 comprises a short rod 401, a strip-shaped plate 402, a rubber pad 403, a convex block 404, a vertical rod 405 and a rubber block 406, the short rod 401 is positioned above the ceiling panel 1, the bottom end of the short rod 401 is fixedly connected with the strip-shaped plate 402, the two sides of the upper surface of the strip-shaped plate 402 are fixedly connected with the rubber pad 403, the rubber pad 403 is made of rubber and has certain toughness, the friction force of the upper surface of the strip-shaped plate 402 can be enhanced, the rubber pad 403 is tightly abutted to the inner wall of the ceiling panel 1, the lower surface of the strip-shaped plate 402 is fixedly connected with the convex block 404, the bottom end of the convex block 404 is hinged with the vertical rod 405, the bottom end of the vertical rod 405 is fixedly connected with the rubber block 406, the rubber block 406 is;

through the cooperation between furred ceiling panel and the increase steady mechanism, operating personnel cup joints the furred ceiling panel behind the surface of strip board, and operating personnel opposition pole carries out the application of force and rotates, makes the top of block rubber and the inner wall of furred ceiling panel counterbalance tightly, can strengthen the stability of furred ceiling panel, is difficult for receiving external force to influence the production displacement in follow-up use, and it is more practical to need not operating personnel to carry out the operation that regularly resets.

The short rod 401 is connected with the transverse cylinder 202 through the connecting mechanism 5, the connecting mechanism 5 comprises a transverse plate 501, a sliding groove 502, a sliding block 503 and a screw rod 504, the lower surface of the transverse plate 501 is fixedly connected with the top end of the short rod 401, the sliding grooves 502 are formed in the left side and the right side of the upper surface of the transverse plate 501, the sliding block 503 is connected to the inside of the sliding groove 502 in a sliding and clamping mode, the screw rod 504 is connected to the top end of the sliding block 503 in a threaded mode, and the top end of the outer wall.

Through the ceiling panel, increase the cooperation between steady mechanism, crossbeam mechanism, installation mechanism and the coupling mechanism, operating personnel all carries out the screw thread through the lead screw and links to each other between slider and the horizontal section of thick bamboo, can install fast between horizontal section of thick bamboo and the horizontal bar board, and each part of being convenient for occupies less space and packs the transportation, does benefit to and uses widely.

When the steel structure unit and the steel structure system are used, an operator can rotate the conical barrel 203 anticlockwise to separate the rubber ring 204 from the cross rod 201, the operator can adjust the distance between the outer ends of the two cross barrels 202 to mount the outer ends of the two cross barrels 202 between different wall distances without measuring and cutting by a toothless saw at the mounting site, the outer ends of the two cross barrels 202 are positioned above the wall surfaces at two sides after the distance adjustment is completed, then the hook 310 is separated from the hanging ring 311, the pressure spring 302 in the transverse groove 301 can rebound to move the square 303, the supporting rod 304 and the bottom plate 305 outwards together, the anti-skid mat 306 can be abutted against the wall surfaces, the mounting between the cross beam mechanism 2 and the wall bodies can be completed, and the mounting between the cross beam mechanism 2 and the wall bodies can be completed without using expansion bolts during the mounting, then the operating personnel all carries out the screw thread with between slider 503 and the horizontal section of thick bamboo 202 through lead screw 503 and link to each other, can install fast between horizontal section of thick bamboo 202 and the horizontal bar board 402, then operating personnel cup joints furred ceiling panel 1 at the surface of bar board 402, operating personnel carries out the application of force rotation to pole setting 405, make the top of rubber piece 406 and furred ceiling panel 1's inner wall offset tightly, rubber pad 403 can offset tightly with the contact surface of furred ceiling panel 1 simultaneously, can strengthen furred ceiling panel 1's stability, be difficult for receiving external force influence to produce the displacement in follow-up use, it is more practical to need not operating personnel to carry out the operation of regularly resetting.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

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