Suspended ceiling transfer layer structure for assembly type refrigeration house

Abstract

The utility model provides a suspended ceiling transfer layer structure for an assembly type refrigeration house. The suspended ceiling transfer layer structure comprises roof steel beams, first connecting pieces, transfer keels, second connecting pieces and house plate suspended ceilings, wherein the roof steel beams are arranged in parallel at intervals; the first connecting pieces are arranged on the roof steel beam at intervals, each first connecting piece comprises a connecting clamping piece and a connecting hanging rod arranged on the connecting clamping piece, and the first connecting pieces surround the outer side of the roof steel beam; the conversion keel is movably arranged at the bottom of the connecting suspender and comprises a longitudinal keel and a transverse keel; the second connecting pieces are arranged on the conversion keel at intervals and are provided with adjusters; the warehouse plate suspended ceiling is arranged at the bottom of the second connecting piece. The first connecting piece, the conversion keel and the second connecting piece are connected into a whole and are connected with the storage plate suspended ceiling, so that the storage plate suspended ceiling is prevented from being directly suspended on a roof purline, and the safety of the whole structure is improved; the pipeline and the warehouse plate suspended ceiling are separated through the conversion keel, so that the pipeline hanging bracket and the warehouse plate keel hanging bracket are prevented from crossing and conflicting during installation, the construction difficulty is further reduced, and the construction quality is ensured; the overall force transmission path is scientific and reasonable, damage caused by punching, welding and the like of the roof steel beam is avoided, and it is guaranteed that the roof steel beam has the good bearing capacity. And the heights of the longitudinal keel and the library plate suspended ceiling can be conveniently adjusted through the connecting suspenders and the adjusters, so that the design requirements are met, and the mounting precision and the construction quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold storage ceiling construction, and particularly relates to a ceiling conversion layer structure for an assembled cold storage. Background Technique

[0002] In recent years, with the rapid development of the economy, the demand for fresh food and seafood products has gradually increased, effectively promoting the development of the cold chain logistics industry. More and more cold storages are being built in China, and the operation of cold storages is also transforming and upgrading from the traditional mode to automation and intelligence. Higher requirements are also put forward for the construction quality, safety, and reliability of cold storage construction. The construction period of a cold storage with a traditional concrete structure form is long, and its self-weight is large. There are many columns in the cold storage, which affect the stacking of goods. At present, assembled cold storages are more commonly used, which have the advantages of a fast construction period, fast cooling and heating rates in the warehouse, and strong adaptability. However, compared with the concrete structure, there is no floor slab at the top of the assembled cold storage for fixing the lower suspenders. The suspenders can only be fixed on the purlins. The purlins not only need to bear the loads of the top waterproof and thermal insulation layer, wind and snow loads, etc., but also need to bear the loads of the lower cold storage panel ceiling and part of the pipeline loads. Especially, the self-weight of the cold storage panels is large, which requires a high bearing capacity of the purlins, and there is an easy safety risk of overloading, which also leads to an increase in construction costs. In addition, independent hangers need to be installed for all the pipelines between the upper part of the cold storage panel ceiling and the roof panel, which forms a cross conflict with the installation of the cold storage panel ceiling, increasing the construction difficulty of the cold storage panel ceiling. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a ceiling conversion layer structure for an assembled cold storage, which avoids directly hanging the cold storage panel ceiling on the roof purlins, has good safety, and is convenient to install, has high precision, and good quality effect.

[0004] The technical solution adopted by the utility model is: a ceiling conversion layer structure for an assembled cold storage, comprising:

[0005] A plurality of roof steel beams arranged in parallel at intervals;

[0006] A plurality of first connectors arranged at intervals on the roof steel beams. The first connectors include connecting clip members and connecting suspenders detachably arranged on the connecting clip members, and surround the outer sides of the roof steel beams;

[0007] A conversion keel arranged at the bottom of the connecting suspenders;

[0008] Second connectors arranged at intervals on the conversion keel, and are equipped with regulators;

[0009] A cold storage panel ceiling arranged at the bottom of the second connectors.

[0010] Further, it further includes a pipeline, and the pipeline is detachably arranged on the conversion keel.

[0011] Further, the conversion keel includes a longitudinal keel and a transverse keel that are cross-connected, and the first connecting member is detachably arranged at the cross-connection part of the longitudinal keel and the transverse keel.

[0012] Further, the connecting clip is provided with connecting holes, the distance between the connecting holes is the same as the width of the steel beam, and the connecting suspension rod passes through the connecting holes and is fixed to the connecting clip by fasteners.

[0013] Further, the connecting clip includes an upper clip and a lower clip, which respectively abut against the upper end face and the lower end face of the roof steel beam, and the connecting suspension rod passes through the upper clip and the lower clip and clamps the steel beam.

[0014] Further, the longitudinal keel is perpendicular to the roof steel beam, and the transverse keel is perpendicularly connected to the longitudinal keel; the longitudinal keel is provided with a reinforcing member, and the lower end of the connecting suspension rod passes through the reinforcing member and is connected to the longitudinal keel.

[0015] Further, the longitudinal keel is further provided with a reinforcing plate, and the reinforcing plate and the reinforcing member are connected to form an integral structure sleeved on the longitudinal keel.

[0016] Further, the roof steel beam is constructed to be inclined to the horizontal direction, and a wedge block is provided between the connecting clip and the roof steel beam to make the connecting suspension rod extend in the vertical direction.

[0017] Further, the second connecting member is detachably connected to the transverse keel.

[0018] The advantages and positive effects of the present utility model are as follows:

[0019] (1) By connecting the first connecting member, the conversion keel and the second connecting member to form an integral whole and connecting it with the cold storage panel ceiling, it avoids the excessive load on the purlin caused by directly hanging the cold storage panel ceiling on the roof purlin, and improves the safety of the overall structure;

[0020] (2) The pipeline is arranged above the conversion keel, and the cold storage panel ceiling is arranged below the conversion keel. The two are separated by the conversion keel to form an independent installation space, avoiding the cross-conflict formed during the installation of the pipeline hanger and the cold storage panel keel hanger, further reducing the construction difficulty and ensuring the construction quality.

[0021] (3) The overall force transmission path is scientific and reasonable, making full use of the bearing capacity of the roof steel beam in the existing structure; the connection form of the first connecting piece surrounding the roof steel beam avoids the damage caused by drilling, welding, etc. to the roof steel beam, ensuring that the roof steel beam has good bearing capacity.

[0022] (4) The connecting suspender is arranged on the roof steel beam and the longitudinal keel through fasteners, and the second connecting piece is provided with a regulator, which can conveniently adjust the height of the longitudinal keel and the panel ceiling to meet the design requirements, improving the installation accuracy and construction quality. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a specific embodiment of the present utility model;

[0024] Figure 2 is a front view of a specific embodiment of the present utility model;

[0025] Figure 3 is a side view of a specific embodiment of the present utility model;

[0026] Figure 4 is a schematic partial structure diagram of a specific embodiment of the present utility model;

[0027] Figure 5 is a schematic diagram of the regulator of a specific embodiment of the present utility model.

[0028] In the figure:

[0029] 10. Roof steel beam 20. First connecting piece 21. Connecting clip

[0030] 211. Upper clip 212. Lower clip 22. Connecting suspender

[0031] 30. Conversion keel 31. Longitudinal keel 32. Transverse keel

[0032] 33. Reinforcing member 34. Reinforcing plate 40. Second connecting piece

[0033] 41. Regulator 50. Panel ceiling Detailed Embodiment

[0034] The embodiments of the present utility model will be described below with reference to the drawings.

[0035] As Figure 1As shown in the figure, the utility model provides a ceiling conversion layer structure for an assembled cold storage, which includes a roof steel beam 10, a first connecting member 20, a conversion keel 30, a second connecting member 40 and a panel ceiling 50: Among them, the roof steel beam 10 is the main load-bearing member of the roof structure of the to-be-constructed building, and a number of roof steel beams 10 are arranged in parallel at intervals; a number of first connecting members 20 are arranged at intervals on the roof steel beam 10. The first connecting member 20 includes a connecting clip 21 and a connecting suspender 22 detachably arranged on the connecting clip 21. The connecting clip 21 and the connecting suspender 22 are connected to form an integral structure and enclose the outside of the roof steel beam 10; the conversion keel 30 is arranged at the bottom of the connecting suspender 22; the second connecting member 40 is arranged at intervals on the conversion keel 30 and is provided with a regulator 41; the panel ceiling 50 is arranged at the bottom of the second connecting member 40, and the position of the panel ceiling 50 can be adjusted by the regulator 41 to be consistent with the design elevation.

[0036] In this application, by setting the first connecting member 20, the conversion keel 30 and the second connecting member 40 and connecting them into an integral structure to form a conversion layer for connecting with the panel ceiling 50 and suspending it below the roof steel beam 10, it avoids the excessive load on the purlin caused by directly suspending the panel ceiling 50 on the roof purlin, makes full use of the bearing capacity of the roof steel beam 10 in the existing structure, the overall force transmission path is scientific and reasonable, and has good stability; at the same time, the connection form of the first connecting member 20 surrounding the roof steel beam 10 avoids the damage caused by punching and welding the roof steel beam 10, ensuring that the roof steel beam 10 has good bearing capacity.

[0037] In this application, the cross-sectional shape of the roof steel beam 10 can be square, circular, C-shaped or I-shaped, and the shape of the first connecting member 20 is constructed to match the cross-sectional shape of the roof steel beam 10; the connecting suspender 22 is detachably arranged on the connecting clip 21, and the first connecting member 20 can be tightly enclosed around the roof steel beam 10 by adjusting the connecting suspender 22 without relative movement relative to the roof steel beam 10; at the same time, the detachable connection between the connecting suspender 22 and the connecting clip 21 is more convenient for installation.

[0038] In a specific embodiment, the cross-sectional shape of the roof steel beam 10 is I-shaped, and the structure formed by enclosing the connecting suspender 22 and the connecting clip 21 can match the size of the I-shaped steel and be tightly connected around the roof steel beam 10.

[0039] Furthermore, the present application further includes a pipeline, which is detachably arranged on the conversion keel 30; compared with the prior art in which a pipeline installation hanger is set on the roof and then the pipeline is installed on the pipeline installation hanger, the construction difficulty of the pipeline and the tensile load borne by the roof are reduced; at the same time, the pipeline is arranged above the conversion keel 30, and the storage board ceiling 50 is arranged below the conversion keel 30. The two are separated by the conversion keel 30 to form an independent installation space, avoiding the cross conflict formed during the installation of the pipeline hanger and the storage board keel hanger, further reducing the construction difficulty and ensuring the construction quality.

[0040] Furthermore, as Figure 1 , Figure 2 and Figure 3 shown, the conversion keel 30 includes a longitudinal keel 31 and a transverse keel 32 that are cross-connected. The first connecting member 20 is detachably arranged at the cross-connection part of the longitudinal keel 31 and the transverse keel 32, which is beneficial to form a stable connection and ensure that each part of the conversion keel 30 is in a balanced stress state.

[0041] In the present application, several first connecting members 20 are arranged at intervals along the length direction of the roof steel beam 10, and several roof steel beams 10 are arranged at intervals. The cross-connection part of the longitudinal keel 31 and the transverse keel 32 is arranged according to the position of the first connecting member 20, and part or all of it is located below the roof steel beam 10; by connecting several first connecting members 20 through several roof steel beams 10, the conversion keel 30 is connected below several first connecting members 20, and several first connecting members 20 jointly bear the tensile force transmitted by the conversion keel 30, so that the overall structure has good stability.

[0042] In the present application, the extending directions of the longitudinal keel 31 and the transverse keel 32 can be set as needed, which can be the same as or different from the extending direction of the roof steel beam 10, and the included angle between the two can also be set to any angle as needed.

[0043] Furthermore, the connecting clip 21 is provided with connecting holes, and the distance between the connecting holes is the same as the width of the roof steel beam 10. The connecting suspension rod 22 passes through the connecting holes and is fixed to the connecting clip 21 through fasteners.

[0044] Furthermore, as Figure 3As shown in the figure, the connecting clip 21 includes an upper clip 211 and a lower clip 212, which respectively abut against the upper end face and the lower end face of the roof steel beam 10. The connecting suspension rod 22 passes through the upper clip 211 and the lower clip 212 and clamps the roof steel beam 10. Specifically, there are at least two connecting suspension rods 22, which are respectively located on both sides of the roof steel beam 10. Through the upper clip 211, the lower clip 212 and the connecting suspension rod 22, the first connecting piece 20 can be fixed at any position of the roof steel beam 10 without damaging the roof steel beam 10, and the installation process is simple and fast. Specifically, the connecting suspension rod 22 passes through the connecting holes of the upper clip 211 and the lower clip 212 and is fixed by fasteners. The fasteners are threadedly connected with the connecting suspension rod 22. The upper end of the connecting suspension rod 22 is fixed to the upper surface of the upper clip 211 by fasteners, and the lower end of the connecting suspension rod 22 is fixed to the lower surface of the lower clip 212 by fasteners and extends downward. By rotating the fasteners, the connecting suspension rod 22 can move along its length direction relative to the upper clip 211 and the lower clip 212, so that the length of the lower end of the connecting suspension rod 22 meets the use requirements. The overall connection is stable and the operation is convenient.

[0045] In a preferred embodiment, the connecting suspension rod 22 is two threaded lead screws, and both the upper clip 211 and the lower clip 212 are made of angle steel. The length of the angle steel is arranged along the width direction of the roof steel beam 10, and its length is greater than the width of the roof steel beam 10. The connecting holes are respectively arranged at both ends of the length direction of the angle steel. One surface of the angle steel is attached to the roof steel beam 10. When the connecting suspension rod 22 is fixed to the upper clip 211 and the lower clip 212 by fasteners, the height of the other surface of the angle steel is higher than the height of the fasteners, so as to form a certain protection for the fasteners and prevent the fasteners from being damaged or rotated by external forces, which is beneficial to ensuring the stability of the overall structure.

[0046] In a specific implementation, as Figure 3 、 Figure 4 shown, the longitudinal keel 31 is perpendicular to the roof steel beam 10, and the transverse keel 32 is vertically connected to the longitudinal keel 31. The longitudinal keel 31 is provided with a reinforcing member 33, and the lower end of the connecting suspension rod 22 passes through the reinforcing member 33 and is connected to the longitudinal keel 31.

[0047] In the present application, the cross-sectional shape of the longitudinal keel 31 can be square, circular, C-shaped, I-shaped or other shapes, and can be detachably connected to the first connecting piece 20. Preferably, the cross-sectional shape of the longitudinal keel 31 is C-shaped, I-shaped or other non-closed shapes and has a plane, which is convenient for the first connecting piece 20 to pass through the plane to achieve a detachable connection with the longitudinal keel 31.

[0048] In a specific embodiment, the longitudinal keel 31 is made of C-shaped steel, and the reinforcing member 33 is made of C-shaped steel with a cross-sectional shape larger than that of the longitudinal keel 31. The reinforcing member 33 is integrally attached to the longitudinal keel 31 from the outside of the longitudinal keel 31 and is fixed to the longitudinal keel 31 by bolts; the two opposite faces of the longitudinal keel 31 are arranged horizontally, and the upper end face located at the upper part is connected to the connecting suspension rod 22. The connecting suspension rod 22 passes through the upper end face of the reinforcing member 33 and the upper end face of the longitudinal keel 31 in sequence, and is fixed by the fastener on the upper side of the upper end face of the reinforcing member 33 and the fastener on the lower side of the upper end face of the longitudinal keel 31; during use, the fastener can be rotated as needed, so that the longitudinal keel 31 moves relative to the connecting suspension rod 22, realizing the adjustment of the installation height of the longitudinal keel 31 to meet the design elevation requirements. The adjustment is simple, the installation accuracy is higher, and the construction quality is improved.

[0049] In this embodiment, there are two connecting suspension rods 22, which are distributed along the length direction of the longitudinal keel 31, and the length of the reinforcing member 33 is greater than the distance between the two connecting suspension rods 22; both the longitudinal keel 31 and the reinforcing member 33 are provided with holes matching the connecting suspension rods 22.

[0050] Further, as Figure 4 shown, the longitudinal keel 31 is further provided with a plurality of reinforcing plates 34. The longitudinal keel 31 is made of C-shaped steel. The reinforcing plates 34 are arranged at the opening part of the longitudinal keel 31, are connected to the reinforcing member 33 to form an integral structure sleeved on the longitudinal keel 31, and form a closed structure surrounding the longitudinal keel 31 in a circle, which can better prevent the longitudinal keel 31 from deforming. The plurality of reinforcing plates 34 are arranged at intervals to avoid affecting the connection between the connecting suspension rod 22 and the longitudinal keel 31.

[0051] In this embodiment, the transverse keel 32 is also made of C-shaped steel and is perpendicularly welded to the vertical surface of the longitudinal keel 31.

[0052] In a specific embodiment, the roof steel beam 10 is constructed to be inclined to the horizontal direction, and a wedge block is provided between the connecting fixture 21 and the roof steel beam 10, so that the connecting suspension rod 22 can extend in the vertical direction. Specifically, there are two wedge blocks, which are respectively arranged on the upper surface and the lower surface of the roof steel beam 10, so that one surface of the upper fixture 211 and the lower fixture 212 arranged above and below the roof steel beam 10 is arranged horizontally; when the connecting suspension rod 22 vertically passes through the upper fixture 211 and the lower fixture 212 and is fixed to the upper fixture 211 and the lower fixture 212 by fasteners, the connecting suspension rod 22 can extend in the vertical direction without forming an angle with the upper fixture 211 and the lower fixture 212, and the overall connection is more stable.

[0053] In this embodiment, the above-mentioned wedge block can be connected to or not connected to the connecting hanger 22; in a preferred embodiment, the connecting hanger 22 passes through the upper clamp 211, the wedge block, another wedge block and the lower clamp 212 in sequence to form an integral structure with better anti-deformation performance.

[0054] Furthermore, the second connecting member 40 is detachably connected to the transverse keel 32. A plurality of second connecting members 40 are distributed along the length direction of the transverse keel 32. Preferably, the second connecting member 40 and the first connecting member 20 are staggered.

[0055] In a specific embodiment, the transverse keel 32 is made of C-shaped steel, and its two opposite surfaces are arranged in the horizontal direction; the second connecting member 40 is fixed to the lower end surface of the transverse keel 32 by a fastener, and its bottom end is connected to the warehouse ceiling 50.

[0056] Preferably, the bottom of the second connecting member 40 is provided with an adjuster 41, which is connected to the panel ceiling 50 through the adjuster 41; Figure 5 As shown, the regulator 41 is a square box body with an opening and is equipped with a customized bolt; one end of the square box body is threadedly connected to the second connecting piece 40, and at the same time, the customized bolt passes through the warehouse board ceiling 50 and is threadedly connected to the other end of the square box body, and is arranged opposite to the second connecting piece 40; the length of the customized bolt is greater than the thickness of the warehouse board ceiling 50. During installation, the tail of the customized bolt passes through the warehouse board ceiling 50, and its positioning plate is located on the lower side of the warehouse board ceiling 50. By rotating the positioning plate, the customized bolt can be connected to the square box body and drive the warehouse board ceiling 50 to move, so that the height of the warehouse board ceiling 50 meets the design requirements.

[0057] The construction method of the ceiling conversion layer structure for the assembled cold storage proposed in this application specifically includes the following steps:

[0058] (1) Install the first connecting member 20 on the roof steel beam 10 so that the connecting suspension rod 22 is arranged in the vertical direction and the bottom ends of the connecting suspension rods 22 have the same elevation;

[0059] Specifically, the first connecting member 20 includes an upper clamp 211 and a lower clamp 212 made of angle steel, and the lengths of the upper clamp 211 and the lower clamp 212 are made according to the width of the roof steel beam 10; during installation, the two connecting hangers 22 are first preliminarily installed on the upper clamp 211, and the upper clamp 211 and the connecting hanger 22 are placed as a whole at the set position of the roof steel beam 10, and then the lower clamp 212 is installed on the connecting hanger 22, and the upper clamp 211, the lower clamp 212 and the connecting hanger 22 are clamped to the top steel beam by fasteners; the fasteners are adjusted to make the bottom end elevations of the connecting hangers 22 the same and meet the design requirements;

[0060] (2) Fabricate the longitudinal keel 31 according to the length of the construction structure, and install the reinforcement 33 on the longitudinal keel 31;

[0061] Specifically, the reinforcement 33 is arranged at the position where the longitudinal keel 31 is to be connected to the first connector 20; meanwhile, when the length of the construction structure is relatively long and multiple longitudinal keels 31 need to be connected, the reinforcement 33 is also arranged at the connection position; the reinforcement 33 is fixed to the longitudinal keel 31 by bolts;

[0062] (3) Connect the connecting suspension rod 22 and the longitudinal keel 31 to make the longitudinal keel 31 meet the design elevation requirements;

[0063] Specifically, the longitudinal keel 31 and the reinforcement 33 are provided with holes that match the connecting suspension rod 22. The connecting suspension rod 22 passes through the holes and is fixed to the longitudinal keel 31 by fasteners; preferably, the connecting suspension rod 22 is threadedly connected to the fasteners, and the height of the longitudinal keel 31 can be adjusted by rotating the fasteners.

[0064] In a specific implementation, the longitudinal keel 31 is fabricated using C-shaped steel. After the connecting suspension rod 22 is installed and the height of the longitudinal keel 31 meets the design requirements, install the reinforcement plate 34 at the opening of the C-shaped steel. Specifically, both ends of the reinforcement plate 34 are welded to the reinforcement 33;

[0065] (4) Weld the transverse keel 32 to the longitudinal keel 31;

[0066] Specifically, the transverse keel 32 is perpendicularly and spaced-welded to the longitudinal keel 31, and the spacing of the transverse keels 32 is set as required;

[0067] (5) Install the second connector 40 on the transverse keel 32;

[0068] In a specific embodiment, the transverse keel 32 is fabricated using C-shaped steel, and holes that match the second connector 40 are opened on its lower end surface. The second connectors 40 are spaced and arranged on the lower end surface of the transverse keel 32, and the spacing between the second connectors 40 is set as required; the second connectors 40 pass through the holes and are fixed to the lower end surface of the transverse keel 32 by fasteners; meanwhile, a regulator 41 is provided at the bottom end of the second connector 40, and the square box of the regulator 41 is threadedly connected to the second connector 40;

[0069] (6) Install the storage panel ceiling 50 on the second connector 40, and adjust the elevation of the storage panel ceiling 50 through the regulator 41.

[0070] Specifically, first install the customized bolts that match the square box on the storage panel ceiling 50, and then connect one end of the customized bolts to the square box. Adjust the elevation of the storage panel ceiling 50 by rotating the customized bolts to make it meet the design requirements.

[0071] The advantages and positive effects of the present utility model are as follows:

[0072] (1) By connecting the first connecting member, the conversion keel and the second connecting member to form an integral body and connecting it to the cold storage panel ceiling, it avoids the excessive load on the purlin caused by directly hanging the cold storage panel ceiling on the roof purlin, and improves the safety of the overall structure.

[0073] (2) The pipeline is arranged above the conversion keel, and the cold storage panel ceiling is arranged below the conversion keel. The two are separated by the conversion keel to form an independent installation space, avoiding the cross conflict formed during the installation of the pipeline hanger and the cold storage panel keel hanger, further reducing the construction difficulty and ensuring the construction quality.

[0074] (3) The overall force transmission path is scientific and reasonable, making full use of the bearing capacity of the roof steel beam in the existing structure; the connection form in which the first connecting member surrounds the roof steel beam avoids the damage caused by drilling, welding, etc. to the roof steel beam, ensuring that the roof steel beam has good bearing capacity.

[0075] (4) The connecting suspension rod is arranged on the roof steel beam and the longitudinal keel through fasteners, and the second connecting member is provided with a regulator, which can conveniently adjust the height of the longitudinal keel and the cold storage panel ceiling to meet the design requirements and improve the construction quality.

[0076] The above has described the embodiments of the present utility model in detail, but the content described is only the preferred embodiments of the present utility model and cannot be considered as limiting the implementation scope of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the patent coverage scope of the present utility model.

Claims

1. A ceiling conversion layer structure for an assembled cold storage, characterized in that Comprising: A number of roof steel beams arranged in parallel at intervals; A number of first connectors arranged at intervals on the roof steel beams, the first connectors comprising connecting clip members and connecting suspension rods detachably arranged on the connecting clip members, and surrounding the outer sides of the roof steel beams; Conversion keels, arranged at the bottoms of the connecting suspension rods; Second connectors, arranged at intervals on the conversion keels and provided with regulators; Panel ceilings, arranged at the bottoms of the second connectors.

2. The ceiling conversion layer structure for the prefabricated cold storage according to claim 1, wherein: It further comprises pipelines, the pipelines being detachably arranged on the conversion keels.

3. The ceiling conversion layer structure for the prefabricated cold storage according to claim 1 or 2, characterized in that: The conversion keels comprise longitudinally arranged keels and transversely arranged keels which are cross-connected, and the first connectors are detachably arranged at the cross-connection parts of the longitudinally arranged keels and the transversely arranged keels.

4. The ceiling conversion layer structure for the prefabricated cold storage according to claim 3, wherein: The connecting clip members are provided with connecting holes, the distance between the connecting holes being the same as the width of the steel beams, and the connecting suspension rods pass through the connecting holes and are fixed to the connecting clip members by fasteners.

5. The ceiling conversion layer structure for the prefabricated cold storage according to claim 4, characterized in that: The connecting clip members comprise upper clip members and lower clip members, respectively abutted against the upper end faces and the lower end faces of the roof steel beams, and the connecting suspension rods pass through the upper clip members and the lower clip members and clamp the steel beams.

6. The ceiling conversion layer structure for an assembled cold storage according to claim 3, 4 or 5, characterized in that: The longitudinally arranged keels are perpendicular to the roof steel beams, and the transversely arranged keels are vertically connected to the longitudinally arranged keels; the longitudinally arranged keels are provided with reinforcing members, and the lower ends of the connecting suspension rods pass through the reinforcing members and are connected to the longitudinally arranged keels.

7. The ceiling conversion layer structure for an assembled cold storage according to claim 6, characterized in that: The longitudinally arranged keels are further provided with reinforcing plates, and the reinforcing plates and the reinforcing members are connected to form an integral structure sleeved on the longitudinally arranged keels.

8. The ceiling conversion layer structure for the prefabricated cold storage according to claim 1, 2, 4, 5 or 7, characterized in that: The roof steel beams are constructed to be inclined with respect to the horizontal direction, and wedges are provided between the connecting clip members and the roof steel beams, so that the connecting suspension rods extend in the vertical direction.

9. The ceiling conversion layer structure for the prefabricated cold storage according to claim 3, characterized in that: The second connectors are detachably connected to the transversely arranged keels.

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