Detachable strip-shaped circular tube ceiling

Abstract

The utility model discloses a detachable strip-shaped circular tube ceiling which comprises a fixed frame, a movable frame, a circular tube decoration assembly, a fixing mechanism and a first hinge unit. The circular tube decoration assembly is arranged at the bottom of the movable frame; the fixing mechanism is arranged at one end of the fixing frame; first hinge units are arranged on the two sides of the movable frame; the other end of the fixed frame is hinged to the near end of the other end of the movable frame. The detachable strip-shaped circular tube ceiling is provided with the fixed frame and the movable frame, conversion between the locking state and the first maintenance state is achieved through cooperation of the fixing mechanism and the first hinge unit, and under the condition that it is guaranteed that the detachable strip-shaped circular tube ceiling is uniform in shape with a peripheral ceiling, locking of the movable frame only needs to be relieved through the fixing mechanism; one end of the movable frame in the width direction can rotate downwards, the purpose of opening the access hole is achieved, opening and closing of the access hole are more convenient and accurate, and the access hole has the advantages of being attractive and uniform in appearance, convenient to disassemble, assemble and maintain and reliable in structure.

Description

Technical Field

[0001] This utility model relates to ceiling structure, and more particularly to a detachable strip-shaped circular tube ceiling. Background Technology

[0002] With the continuous development and application of prefabricated construction in building decoration, various ceiling designs have simplified the structural assembly process, shortened the construction period, and improved efficiency through prefabricated technology. However, in practical applications, access panels need to be reserved for the inspection and maintenance of various pipes above the ceiling. During inspection and maintenance, the entire movable panel needs to be completely removed and then reinstalled after the inspection and maintenance are completed. To prevent the movable panel from mismatching with the surrounding strip ceiling and affecting the overall uniformity of the ceiling design, maintenance personnel need to precisely install the movable panel when reinstalling it. Therefore, the installation process of the movable panel is time-consuming and labor-intensive, resulting in low efficiency for inspection and maintenance. Utility Model Content

[0003] The purpose of this invention is to propose a detachable strip-shaped circular tube ceiling to solve the problem of time-consuming and labor-intensive installation of the aforementioned movable panels.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a detachable strip-shaped circular tube ceiling, including a fixed frame, a movable frame, a circular tube decorative component, a fixing mechanism, and a first hinge unit;

[0006] Both sides of the movable frame along its length are provided with first hinge units; each first hinge unit includes a first hinge rod and a second hinge rod, one end of the first hinge rod is hinged to one end of the fixed frame near its width, the other end of the first hinge rod is hinged to one end of the second hinge rod, and the other end of the second hinge rod is hinged to one end of the movable frame near its width; the other end of the fixed frame is hinged to the other end of the movable frame near its width.

[0007] The circular tube decorative component is located at the bottom of the movable frame; the fixing mechanism is located at one end of the fixed frame in the width direction.

[0008] The detachable strip-shaped circular tube ceiling includes a locked state and a first maintenance state. When the detachable strip-shaped circular tube ceiling is in the locked state, the first hinge unit is in a folded state, and the fixing mechanism is detachably connected to the movable frame. When the detachable strip-shaped circular tube ceiling is in the first maintenance state, the first hinge unit is in an unfolded state, and one end of the movable frame in the width direction is inclined downward.

[0009] In the detachable strip-shaped circular tube ceiling, the first hinge unit further includes a connecting mechanism, which includes a fixed plate and a movable plate. The fixed plate is disposed on the movable frame and has a snap-fit ​​groove disposed along the width direction of the movable frame. The upper end of the fixed plate has a snap-fit ​​notch communicating with the snap-fit ​​groove. The movable plate is hinged to the fixed plate and has a limiting notch. The other end of the second hinge rod is provided with a fixed shaft near its proximal end.

[0010] When the detachable strip-shaped circular tube ceiling is in the first maintenance state, the fixed shaft is slidably assembled into the snap-fit ​​groove, and the movable plate is fastened to the fixed shaft through a defined notch, so that the second hinge rod is detachably connected to the movable frame;

[0011] The detachable strip-shaped circular tube ceiling also includes a second maintenance state. When the detachable strip-shaped circular tube ceiling is in the second maintenance state, the fixed shaft is disengaged from the snap-fit ​​groove through the snap-fit ​​notch, and the second hinge rod is separated from the movable frame.

[0012] The detachable strip-shaped circular tube ceiling also includes a second hinge unit, which is disposed on both sides of the length direction of the movable frame. The second hinge unit includes a first fixed rod, a second fixed rod, a first linkage rod, a second linkage rod, and a third linkage rod.

[0013] The first fixing rod is disposed on the fixed frame, and the second fixing rod is disposed on the movable frame; one end of the first linkage rod is hinged to the end of the first fixing rod near the fixing mechanism; the other end of the first linkage rod is hinged to the middle of the second fixing rod;

[0014] The first fixed rod has a track groove on its side wall, the track groove being located at the end of the first fixed rod away from the fixing mechanism, and a slider is slidably mounted on the track groove; one end of the second linkage rod is hinged to the slider, and the other end of the second linkage rod is hinged to the end of the second fixed rod away from the connecting mechanism; one end of the third linkage rod is hinged to the slider, and the other end of the third linkage rod is hinged to the end of the first linkage rod near the second fixed rod.

[0015] In the detachable strip-shaped circular tube ceiling, the movable frame includes two longitudinal rods and two transverse rods, which are connected end to end to form a rectangular frame structure; one end of the first hinge unit is located on the transverse rod, and the circular tube decorative component is detachably connected to the bottom of the transverse rod; the second hinge unit is located on the longitudinal rod.

[0016] In the detachable strip-shaped circular tube ceiling, the fixed frame is provided with a clearance area. Both of the longitudinal bars can be detached from the top of the transverse bar. The width of the clearance area is adapted to the distance between the two longitudinal bars. When the detachable strip-shaped circular tube ceiling is in the locked state, the longitudinal bars are embedded in the clearance area.

[0017] In the detachable strip-shaped circular tube ceiling, the fixing mechanism includes a hook unit, which includes a hook fixing seat and a fixing hook. The fixing hook includes a hinge part, a connecting part, and a clamping part connected in sequence. The hook fixing seat is disposed on the fixed frame. One end of the hinge part is hinged to the hook fixing seat, and the other end of the hinge part is connected to one end of the connecting part. The other end of the connecting part is connected to the clamping part. When the detachable strip-shaped circular tube ceiling is in the locked state, the clamping part is pressed tightly against the bottom of the movable frame.

[0018] In the detachable strip-shaped circular tube ceiling, the fixing mechanism includes two or more hook units, and the fixing mechanism also includes a connecting rod;

[0019] The connecting part is provided with a through hole, and the connecting rod passes through the through hole in sequence and is connected to the corresponding connecting part.

[0020] In the detachable strip-shaped circular tube ceiling, the circular tube decorative assembly includes a strip-shaped circular tube, a bolt, and a nut. The top of the strip-shaped circular tube is provided with a dovetail groove, and the bolt is slidably assembled in the dovetail groove. The movable frame is provided with a through hole. The threaded part of the bolt extends out from the dovetail groove, passes through the through hole, and is threadedly connected to the nut.

[0021] One of the technical solutions of this utility model can have the following beneficial effects:

[0022] The detachable strip-shaped circular tube ceiling is equipped with a fixed frame and a movable frame. Through the cooperation of the fixing mechanism and the first hinge unit, the locking state and the first maintenance state can be changed. While ensuring that it is consistent with the surrounding ceiling design, the movable frame can be unlocked by the fixing mechanism, and one end of the movable frame in the width direction can be rotated downward to open the access port. This makes the opening and closing of the access port more convenient and precise. It has the characteristics of beautiful and uniform appearance, convenient disassembly and maintenance, and reliable structure. Attached Figure Description

[0023] Figure 1 This is a top view of one embodiment of the present invention;

[0024] Figure 2 This is a front view of one embodiment of the present invention in a locked state;

[0025] Figure 3 yes Figure 2A magnified view of a section at point A in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of the transition from the locked state to the first maintenance state in one embodiment of the present invention;

[0027] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0028] Figure 6 This is a schematic diagram of the structure in the second maintenance state in one embodiment of the present invention;

[0029] Figure 7 yes Figure 6 A magnified view of a section at point C;

[0030] Figure 8 This is a diagram showing the connection relationship between the fixed hook and the movable frame in one embodiment of this utility model;

[0031] In the attached diagram: 1. Fixed frame; 2. Movable frame; 3. Round tube decorative component; 4. Fixing mechanism; 5. First hinge unit; 6. Second hinge unit.

[0032] Longitudinal rod 21, transverse rod 22; strip-shaped round tube 31, bolt 32, nut 33; hook fixing seat 41, fixing hook 42; connecting rod 43; first hinge rod 51, second hinge rod 52; first fixed rod 61, second fixed rod 62, first linkage rod 63, second linkage rod 64, third linkage rod 65;

[0033] Dovetail groove 301; hinge part 421, connecting part 422, abutting part 423; fixed shaft 521; fixed plate 531, movable plate 532; snap-fit ​​groove 533; limiting notch 534; track groove 601; slider 602. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis.

[0036] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Please refer to Figures 1-8 This utility model provides a detachable strip-shaped circular tube ceiling, including a fixed frame 1, a movable frame 2, a circular tube decorative component 3, a fixing mechanism 4, and a first hinge unit 5;

[0039] Both sides of the movable frame 2 along its length are provided with first hinge units; the first hinge unit 5 includes a first hinge rod 51 and a second hinge rod 52, one end of the first hinge rod 51 is hinged to one end of the fixed frame 1 near its width, the other end of the first hinge rod 51 is hinged to one end of the second hinge rod 52, and the other end of the second hinge rod 52 is hinged to one end of the movable frame 2 near its width; the other end of the fixed frame 1 is hinged to the other end of the movable frame 2 near its width.

[0040] The circular tube decorative component 3 is disposed at the bottom of the movable frame 2; the fixing mechanism 4 is disposed at one end of the fixed frame 1 in the width direction;

[0041] The detachable strip-shaped circular tube ceiling includes a locked state and a first maintenance state. When the detachable strip-shaped circular tube ceiling is in the locked state, the first hinge unit 5 is in a folded state, and the fixing mechanism 4 is detachably connected to the movable frame 2. When the detachable strip-shaped circular tube ceiling is in the first maintenance state, the first hinge unit 5 is in an unfolded state, and one end of the movable frame 2 in the width direction is inclined downward.

[0042] The detachable strip-shaped circular tube ceiling is equipped with a fixed frame 1 and a movable frame 2. Through the cooperation of the fixing mechanism 4 and the first hinge unit 5, it achieves a transition between a locked state and a first maintenance state. In the first maintenance state, because the fixed frame 1 has a clearance area, one end of the movable frame 2 is tilted downwards in the width direction, exposing the clearance area of ​​the fixed frame 1. This clearance area serves as an inspection port, facilitating maintenance of various pipes on the ceiling. At this time, the first hinge unit 5 is in an unfolded state. In a specific embodiment of this invention, the folded state of the first hinge unit 5 is such that the angle between the first hinge rod 51 and the second hinge rod 52 is 90°. In the locked state, the fixing mechanism 4 is detachably connected to the movable frame 2. The fixing mechanism 4 limits the movement of the movable frame 2, thereby fixing its position and ensuring the uniformity of the detachable strip-shaped circular tube ceiling with the surrounding ceiling design. At this time, the first hinge unit 5 is in a folded state, i.e., the angle between the first hinge rod 51 and the second hinge rod 52 is 0°.

[0043] With the above structure, while ensuring uniformity with the surrounding ceiling design, the movable frame 2 can be unlocked by the fixing mechanism 4, allowing one end of the movable frame 2 to rotate downwards in the width direction, thus opening the access panel. This makes opening and closing the access panel more convenient and precise, and features a beautiful and uniform design, easy disassembly and maintenance, and a reliable structure.

[0044] In practical applications, several hangers are installed on the structural floor slab to suspend the fixed frame 1, thereby achieving the fixation of the detachable strip-shaped circular tube ceiling.

[0045] Preferably, the first hinge unit 5 further includes a connecting mechanism, which includes a fixed plate 531 and a movable plate 532. The fixed plate 531 is disposed on the movable frame 2 and has a snap-fit ​​groove 533 disposed along the width direction of the movable frame 2. The upper end of the fixed plate 531 has a snap-fit ​​notch communicating with the snap-fit ​​groove. The movable plate 532 is hinged to the fixed plate 531 and has a limiting notch 534. A fixed shaft 521 is provided near the other end of the second hinge rod 52.

[0046] When the detachable strip-shaped circular tube ceiling is in the first maintenance state, the fixed shaft 521 is slidably assembled into the snap-fit ​​groove 533, and the movable plate 532 is fastened to the fixed shaft 521 through the limiting notch 534, so that the second hinge rod 52 is detachably connected to the movable frame 2.

[0047] The detachable strip-shaped circular tube ceiling also includes a second maintenance state. When the detachable strip-shaped circular tube ceiling is in the second maintenance state, the fixed shaft 521 is disengaged from the snap-fit ​​groove 533 through the snap-fit ​​notch, and the second hinge rod 52 is separated from the movable frame 2.

[0048] In a preferred embodiment, the second hinge rod 52 is connected to the movable frame 2 via a connecting mechanism, achieving detachability and allowing the detachable strip-shaped circular ceiling to transition from a first maintenance state to a second maintenance state. In the second maintenance state, the second hinge rod 52 separates from the connecting mechanism, and the movable frame 2, under the influence of gravity, becomes perpendicular to the ground, further opening the access panel and facilitating the insertion of maintenance tools and parts by personnel during inspection and maintenance.

[0049] When it is necessary to change from the first maintenance state to the second maintenance state, the operator can rotate the movable plate 532 to release the restriction of the fixed shaft 521. Then, the fixed shaft 521 of the second hinge rod 52 is slid into the locking notch, thereby disengaging the fixed shaft 521 from the locking groove 533, allowing the movable frame 2 to hang completely. Conversely, when it is necessary to change from the second maintenance state to the first maintenance state, the movable frame 2 is lifted, causing it to rotate upwards. Then, the fixed shaft 521 of the second hinge rod 52 is engaged from the locking notch into the locking groove 533. The fixed shaft 521 is then slid in the locking groove 533 while the movable plate 532 is rotated, causing the limiting notch 534 of the movable plate 532 to engage with the fixed shaft 521. Through the cooperation of the fixed plate 531 and the movable plate 532, the second hinge rod 52 is rotatably assembled with the connecting mechanism. The above structure is simple, stable, reliable, and easy for maintenance personnel to operate.

[0050] Optionally, it also includes a second hinge unit 6, which is disposed on both sides of the movable frame 2 along its length. The second hinge unit 6 includes a first fixing rod 61, a second fixing rod 62, a first linkage rod 63, a second linkage rod 64, and a third linkage rod 65.

[0051] The first fixing rod 61 is disposed on the fixed frame 1, and the second fixing rod 62 is disposed on the movable frame 2; one end of the first linkage rod 63 is hinged to the end of the first fixing rod 61 near the fixing mechanism 4; the other end of the first linkage rod 63 is hinged to the middle of the second fixing rod 62;

[0052] The first fixing rod 61 has a track groove 601 on its side wall. The track groove 601 is located at the end of the first fixing rod 61 away from the fixing mechanism 4. The track groove 601 is slidably fitted with a slider 602. One end of the second linkage rod 64 is hinged to the slider 602, and the other end of the second linkage rod 64 is hinged to the end of the second fixing rod 62 away from the connecting mechanism. One end of the third linkage rod 65 is hinged to the slider 602, and the other end of the third linkage rod 65 is hinged to the end of the first linkage rod 63 near the second fixing rod 62.

[0053] In one specific embodiment of this utility model, the other end of the fixed frame 1 in the width direction is hinged to the other end of the movable frame 2 in the width direction near the other end through a second hinge unit 6. The second hinge unit 6 can refer to the existing casement window hinge structure, and through the cooperation of the first fixed rod 61, the second fixed rod 62, the first linkage rod 63, the second linkage rod 64 and the third linkage rod 65, the transition between the locked state and the first maintenance state, as well as between the first maintenance state and the second maintenance state, is realized, ensuring that the opening and closing operation of the access panel is smooth and stable.

[0054] Specifically, the movable frame 2 includes two longitudinal rods 21 and two transverse rods 22, which are connected end to end to form a rectangular frame structure; one end of the first hinge unit 5 is disposed on the transverse rod 22, and the round tube decorative component 3 is detachably connected to the bottom of the transverse rod 22; the second hinge unit 6 is disposed on the longitudinal rod 21.

[0055] The movable frame 2 consists of two longitudinal bars 21 and two transverse bars 22. The longitudinal bars 21 are arranged side by side along the length direction, and the transverse bars 22 are arranged side by side along the width direction. The two ends of the first transverse bar 22 are detachably connected to the first ends of the two longitudinal bars 21, and the two ends of the second transverse bar 22 are detachably connected to the second ends of the two longitudinal bars 21, thus forming a rectangular frame structure.

[0056] In the preferred embodiment described above, the connecting mechanism is disposed on the transverse bar 22.

[0057] Specifically, the fixed frame 1 is provided with a clearance area, and both longitudinal rods 21 can be detached from the top of the transverse rod 22. The width of the clearance area is adapted to the distance between the two longitudinal rods 21. When the detachable strip-shaped circular tube ceiling is in the locked state, the longitudinal rods 21 are embedded in the clearance area.

[0058] With the above structure, when the detachable strip-shaped circular tube ceiling is in the locked state, the longitudinal rod 21 is embedded in the clearance area, so that the overall height of the detachable strip-shaped circular tube ceiling is smaller and the thickness of the detachable strip-shaped circular tube ceiling is smaller when it is in the locked state. Moreover, the longitudinal rod 21 is hidden in the fixed frame 1, making the overall shape more beautiful.

[0059] Furthermore, the fixing mechanism 4 includes a hook unit, which includes a hook fixing seat 41 and a fixing hook 42. The fixing hook 42 includes a hinge part 421, a connecting part 422 and a clamping part 423 connected in sequence. The hook fixing seat 41 is disposed on the fixing frame 1. One end of the hinge part 421 is hinged to the hook fixing seat 41, and the other end of the hinge part 421 is connected to one end of the connecting part 422. The other end of the connecting part 422 is connected to the clamping part 423. When the detachable strip-shaped circular tube ceiling is in the locked state, the clamping part 423 is tightly pressed against the bottom of the movable frame 2.

[0060] With the above structure, the bottom of the movable frame 2 is hooked by the clamping part 423 of the fixed hook 42, so that the detachable strip-shaped round tube ceiling is kept locked, thus maintaining the same shape as the surrounding ceiling.

[0061] The hook fixing seat 41 is used to connect and fix the hook 42. The fixed hook 42 can rotate about the hinge point between the hinge part 421 and the hook fixing seat 41, thereby achieving the purpose of hooking or releasing the movable frame 2. The connecting part 422 is used to connect the hinge part 421 and the abutting part 423, and the abutting part 423 abuts against the bottom of the movable frame 2 to fix the movable frame 2.

[0062] Furthermore, the fixing mechanism 4 includes two or more hook units, and the fixing mechanism 4 also includes a connecting rod 43;

[0063] The connecting part 422 is provided with a through hole, and the connecting rod 43 passes through the through hole in sequence and is connected to the corresponding connecting part 422.

[0064] In one specific embodiment of this utility model, the fixing mechanism 4 includes a connecting rod 43 and three hook units. The connecting portions 422 of each hook 42 are provided with through holes, and the connecting rod 43 connects the three hooks 42 together through these through holes. Using this structure, the connecting rod 43 drives all the hooks 42 to rotate synchronously, avoiding the need for maintenance personnel to manually move each hook 42 away from the movable frame 2, thus saving operational steps and improving maintenance efficiency.

[0065] Specifically, the round tube decorative component 3 includes a strip-shaped round tube 31, a bolt 32, and a nut 33. The top of the strip-shaped round tube 31 is provided with a dovetail groove 301, and the bolt 32 is slidably assembled in the dovetail groove 301. The movable frame 2 is provided with a through hole. The threaded part of the bolt 32 extends out from the dovetail groove 301, passes through the through hole, and is threadedly connected to the nut 33.

[0066] The decorative tube component 3 can refer to existing decorative tubes. The top of the strip-shaped tube 31 is provided with a dovetail groove 301. The nut of the bolt 32 is tightly abutted against the dovetail groove 301. Through the cooperation of the bolt 32 and the nut 33, the strip-shaped tube 31 is fixed to the bottom of the movable frame 2. In a specific embodiment of this utility model, both ends of the horizontal rod 22 are provided with through holes. Both ends of the strip-shaped tube 31 are detachably connected to the two horizontal rods 22 of the movable frame 2 through the cooperation of the dovetail groove 301, the through holes, the bolt 32 and the nut 33.

[0067] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A demountable strip cove comprising, The detachable strip-shaped round pipe ceiling comprises a fixed frame, a movable frame, a round pipe decoration assembly, a fixing mechanism and a first hinged unit. The movable frame is hinged to the fixed frame at two ends in the length direction of the movable frame. The round pipe decoration assembly is arranged at the bottom of the movable frame. The detachable strip-shaped round pipe ceiling comprises a locking state and a first maintenance state.

2. A demountable strip cove according to claim 1, wherein, The first hinged unit is in an unfolded state, and one end of the movable frame in the width direction is arranged in a downward inclined manner. The first hinged unit further comprises a connecting mechanism. The connecting mechanism comprises a fixed plate and a movable plate.

3. A demountable strip cove according to claim 2, wherein, The fixed plate is arranged on the movable frame. The fixed plate is provided with a clamping groove arranged in the width direction of the movable frame. The fixed plate is provided with a clamping notch in communication with the clamping groove. The movable plate is hinged to the fixed plate. The other end of the second hinged rod is provided with a fixed shaft. The fixed shaft is slidably arranged in the clamping groove. The movable plate is buckled on the fixed shaft through the limiting notch. The detachable strip-shaped round pipe ceiling further comprises a second maintenance state. The fixed shaft is separated from the clamping groove through the clamping notch. The second hinged unit is arranged on both sides of the movable frame in the length direction. The second hinged unit comprises a first fixed rod, a second fixed rod, a first linkage rod, a second linkage rod and a third linkage rod. The first fixed rod is arranged on the fixed frame. The second fixed rod is arranged on the movable frame. One end of the first linkage rod is hinged to one end of the first fixed rod close to the fixing mechanism. The other end of the first linkage rod is hinged to the middle of the second fixed rod. The side wall of the first fixed rod is provided with a track groove. The track groove is located at one end of the first fixed rod away from the fixing mechanism. The track groove is slidably provided with a sliding block. One end of the second linkage rod is hinged to the sliding block. The other end of the second linkage rod is hinged to one end of the second fixed rod away from the connecting mechanism. One end of the third linkage rod is hinged to the sliding block. The other end of the third linkage rod is hinged to one end of the first linkage rod close to the second fixed rod.

4. A demountable strip cove according to claim 3, wherein, The movable frame comprises two longitudinal rods and two lateral rods, the lateral rods and the longitudinal rods are connected end to end in sequence to form a rectangular frame structure; one end of the first hinged unit is arranged on the lateral rod, and the circular tube decoration assembly is detachably connected to the bottom of the lateral rod, and the second hinged unit is arranged on the longitudinal rod.

5. A demountable strip cove according to claim 4, wherein, The fixed frame is provided with a clearance, and the two longitudinal rods are detachably arranged on the top of the lateral rod, the width of the clearance is matched with the distance between the two longitudinal rods, and when the detachable strip-shaped circular tube ceiling is in the locked state, the longitudinal rod is embedded in the clearance.

6. A demountable linear coffered ceiling according to claim 1, wherein, The fixing mechanism comprises a hook unit, the hook unit comprises a hook fixing seat and a fixing hook, the fixing hook comprises a hinged part, a connecting part and a abutting part connected in sequence, the hook fixing seat is arranged on the fixed frame, one end of the hinged part is hinged with the hook fixing seat, and the other end of the hinged part is connected with one end of the connecting part; the other end of the connecting part is connected with the abutting part; when the detachable strip-shaped circular tube ceiling is in the locked state, the abutting part abuts against the bottom of the movable frame.

7. A demountable strip cove according to claim 6, wherein, The fixing mechanism comprises two or more hook units, and the fixing mechanism further comprises a connecting rod; The connecting part is provided with a through hole, and the connecting rod passes through the through hole in sequence and is connected with the corresponding connecting part.

8. A demountable linear coffered ceiling according to claim 1, wherein, The circular tube decoration assembly comprises a strip-shaped circular tube, a bolt and a nut, the top of the strip-shaped circular tube is provided with a dovetail groove, and the bolt is slidingly assembled in the dovetail groove; the movable frame is provided with a through hole; the shank of the bolt extends from the dovetail groove and passes through the through hole and is threadedly connected with the nut.

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