Covering joint device for deformation joint of ultra-wide parapet roof with small height difference and its construction method

Abstract

The present invention discloses a covering joint device for a deformation joint of an ultra-wide parapet roof with a small height difference and a construction method thereof. The device mainly includes a bendable and slidable keel assembly, a high-side slidable keel assembly, a top slidable keel, a low-side slidable keel assembly, a plurality of inverted L-shaped fixed keels and a plurality of I-shaped fixed keels. Among them, the high-side slidable keel assembly can slide axially along the single sliding through-axis, the top slidable keel can slide axially along the single sliding through-axis, the bendable and slidable keel assembly can rotate around the rotating sliding through-axis and can also slide axially along the rotating sliding through-axis, and the low-side slidable keel assembly can slide axially along the single sliding through-axis, so that the overall covering joint device can adapt to the relative deformation of the building in the three directions of up and down, left and right, and front and back, without causing internal forces in the building structure or the covering joint device, effectively avoiding damage to the building structure or the covering joint device, and effectively solving the technical problems existing in the construction process of deformation joints with a large width and a height difference, but a small height difference.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering construction, and particularly relates to a covering joint device for a roof deformation joint of an ultra-wide and small-height parapet wall and a construction method thereof. Background Art

[0002] A deformation joint is a general term for an expansion joint, a settlement joint, and a seismic joint. When a building is affected by external factors, it will undergo certain deformations. If no structural measures are taken in advance according to regulations for temperature, uneven settlement, and earthquake prevention, it may lead to cracking or even damage of the building. The deformation joint is a structural joint set for these situations.

[0003] During the construction process of building engineering, deformation joint construction is often encountered. Generally, deformation joint construction can be carried out according to standard drawings and relevant specification requirements. In addition, there are also some factories that produce supporting and standardized deformation joint covering joint devices, and a relatively complete and mature construction technology for deformation joint construction has been formed. Existing deformation joint covering joint devices generally only target roof deformation joints with a small width and no height difference or a large height difference. For deformation joints with a large width, a height difference, but a small height difference, the existing technology has not been involved. However, there are also some buildings that, due to the requirements of shape and function, have a width exceeding the standard specified value, and there is a certain height difference between two buildings, but the height difference is relatively small compared to the corner-type deformation joint. For such deformation joints, there is no standard drawing or construction specification to rely on, nor any standardized product to choose from, and there are great technical difficulties during the construction process. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problems existing in the prior art, and provide a covering joint device for a roof deformation joint of an ultra-wide and small-height parapet wall, which has a simple structure, is safe and reliable, is easy to construct, can ensure the construction quality, and can adapt to the relative deformation of the building structure in three directions: up and down, left and right, and front and back.

[0005] Another purpose of the present invention is to provide a construction method for a covering joint device for a roof deformation joint of an ultra-wide and small-height parapet wall.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A covering joint device for a super-wide and small-height-difference parapet roof deformation joint, comprising a bendable sliding keel assembly, a high-side sliding keel assembly, a top sliding keel, a low-side sliding keel assembly, a plurality of inverted L-shaped fixed keels fixed on the side of the high-side parapet, and a plurality of I-shaped fixed keels fixed on the side of the low-side parapet. The high-side sliding keel assembly is connected to the vertical sections of the respective inverted L-shaped fixed keels through two single-sliding through shafts. The horizontal sections of the respective inverted L-shaped fixed keels are connected to the top sliding keel through a single-sliding through shaft. The horizontal section of the inverted L-shaped fixed keel is hinged to the bendable sliding keel assembly through a rotary sliding through shaft. The bendable sliding keel assembly is connected to the tops of the respective I-shaped fixed keels through a rotary sliding through shaft. The I-shaped fixed keels are connected to the low-side sliding keel assembly through two single-sliding through shafts. A cover surface is fixed on the low-side sliding keel assembly, the bendable sliding keel assembly, the top sliding keel, and the high-side sliding keel assembly.

[0007] Further, the covering joint device for the super-wide and small-height-difference parapet roof deformation joint further comprises a waterstop belt and a fireproof belt. The fireproof belt comprises two layers of stainless steel liners and a refractory fiber felt sandwiched between the two layers of stainless steel liners. The fireproof belt is fixed between the high-side parapet and the low-side parapet. The waterstop belt is made of a rubber sheet material and is fixedly installed on the side of the high-side parapet, the top of the high-side parapet, between the tops of the high-side parapet and the low-side parapet, the top of the low-side parapet, and the side of the low-side parapet.

[0008] Further, the bendable sliding keel assembly comprises a plurality of groups of bendable keel frames arranged in parallel and a plurality of fixed secondary keel rods fixedly connected to the plurality of groups of bendable keel frames. The bendable keel frame comprises a long galvanized square pipe and a short galvanized square pipe hinged through a hinge. The ends of the long galvanized square pipe and the short galvanized square pipe are provided with rotary sliding through shaft perforations.

[0009] Further, the high-side sliding keel assembly comprises a plurality of vertically arranged high-side galvanized square pipes and a plurality of high-side secondary keel rods fixedly connected to the high-side galvanized square pipes. The upper and lower parts of the high-side galvanized square pipes are provided with single-sliding through shaft perforations. The high-side galvanized square pipes are arranged at intervals with the inverted L-shaped fixed keels.

[0010] Further, the low-side sliding keel assembly comprises a plurality of vertically arranged low-side galvanized square pipes and a plurality of low-side secondary keel rods fixedly connected to the low-side galvanized square pipes. The upper and lower parts of the low-side galvanized square pipes are provided with single-sliding through shaft perforations. The low-side galvanized square pipes are arranged at intervals with the I-shaped fixed keels.

[0011] Further, the top sliding keel includes a top secondary keel rod and a plurality of sliding seats fixed on the top secondary keel rod. The sliding seats are provided with single-sliding through-axis perforations, and the sliding seats are spaced apart from the inverted L-shaped fixed keel.

[0012] Further, the material of the cover surface is galvanized iron sheet. An inner waterproof coating film is covered on the inner surface of the cover surface, and an outer waterproof layer is covered on the outer surface of the cover surface. The cover surface is fixed on the fixed secondary keel rod, the high-side secondary keel rod, the low-side secondary keel rod and the top secondary keel rod by self-tapping screws.

[0013] Further, single-sliding through-axis perforations are provided in the upper part, the lower part of the vertical section of the inverted L-shaped fixed keel and the middle part of the horizontal section of the inverted L-shaped fixed keel, and a rotating sliding through-axis perforation is provided at the end of the horizontal section of the inverted L-shaped fixed keel.

[0014] Further, a rotating sliding through-axis perforation is provided at the top end of the I-shaped fixed keel, single-sliding through-axis perforations are provided in the upper part and the lower part of the I-shaped fixed keel. The top end of the I-shaped fixed keel exceeds the top of the low-side parapet wall by 30 - 40 mm, and the end of the horizontal section of the inverted L-shaped fixed keel exceeds the thickness of the high-side parapet wall by 100 - 150 mm.

[0015] A construction method for a cover joint device of a super-wide and small-height-difference parapet roof deformation joint, the method comprising the following steps:

[0016] A. Taking the outer edge line of the high side of the deformation joint as the baseline, measuring the actual size of the deformation joint, designing and calculating the specific sizes of each component of the cover joint device according to the actual size, and drawing a component processing drawing;

[0017] B. Installing the fireproof belt in the deformation joint between the high-side parapet wall and the low-side parapet wall;

[0018] C. Applying a base adhesive on the tops of the high-side parapet wall and the low-side parapet wall and on the sides of the high-side parapet wall and the low-side parapet wall, and also applying an adhesive on both ends of the water stop belt. Sticking both ends of the water stop belt on the tops of the high-side parapet wall and the low-side parapet wall and on the sides of the high-side parapet wall and the low-side parapet wall respectively to completely cover the deformation joint, and keeping the water stop belt in a certain natural sag;

[0019] D. Pulling a through-line at both ends of the high-side parapet wall, fixing a plurality of inverted L-shaped fixed keels on the wall surface of the high-side parapet wall at a certain interval with expansion screws. The end of the horizontal section of the inverted L-shaped fixed keel exceeds the thickness of the high-side parapet wall by 100 - 150 mm. The top end and the lower part of the wall surface of the high-side parapet wall are padded and leveled with gaskets to ensure that the corresponding single-sliding through-axis perforations and rotating sliding through-axis perforations on each inverted L-shaped fixed keel are on a straight line;

[0020] E. Pull a string line at both ends of the low parapet wall, and fix the I-shaped fixed keel on the low parapet wall surface with expansion screws at a certain interval. The top end of the I-shaped fixed keel exceeds the top of the low parapet wall by 30 - 40 mm. Pad and level the lower part of the low parapet wall surface with gaskets to ensure that the single-sliding through-axis perforations and the rotating-sliding through-axis perforations corresponding to each I-shaped fixed keel are on a straight line;

[0021] F. Install the bendable sliding keel assembly: Make multiple bendable keel frames by hinging a long galvanized square pipe and a short galvanized square pipe. Pass a rotating-sliding through-axis through the rotating-sliding through-axis perforations at the horizontal sections of each inverted L-shaped fixed keel and the rotating-sliding through-axis perforations at the ends of the short galvanized square pipes at intervals to connect the inverted L-shaped fixed keels and the bendable keel frames in series; Similarly, pass another rotating-sliding through-axis through the rotating-sliding through-axis perforations at the top ends of each I-shaped fixed keel and the rotating-sliding through-axis perforations at the ends of the long galvanized square pipes at intervals to connect the I-shaped fixed keels and the bendable keel frames in series; Tighten and fix both ends of the rotating-sliding through-axis with nuts; Adjust the distance between the bendable keel frames, and then fix multiple fixed secondary keel rods on the bendable keel frames with self-tapping screws or by welding;

[0022] G. Install the high-side sliding keel assembly: Pass two single-sliding through-axes through the single-sliding through-axis perforations at the upper and lower parts of each high-side galvanized square pipe and the single-sliding through-axis perforations at the upper and lower parts of the vertical section of the inverted L-shaped fixed keel at intervals to connect the vertical part of the inverted L-shaped fixed keel and the high-side galvanized square pipe in series, and tighten and fix both ends of the single-sliding through-axis with nuts; Adjust the distance between the high-side galvanized square pipes, and then fix multiple high-side secondary keel rods on the high-side galvanized square pipes with self-tapping screws or by welding;

[0023] H. Install the low-side sliding keel assembly: Pass two single-sliding through-axes through the single-sliding through-axis perforations at the upper and lower parts of the I-shaped fixed keel and the single-sliding through-axis perforations at the upper and lower parts of the low-side galvanized square pipe at intervals to connect the I-shaped fixed keel and the low-side galvanized square pipe in series, and tighten and fix both ends of the single-sliding through-axis with nuts; Adjust the distance between the low-side galvanized square pipes, and then fix multiple low-side secondary keel rods on the low-side galvanized square pipes with self-tapping screws or by welding;

[0024] I. Install the top sliding keel: Pass a single-sliding through-axis through the single-sliding through-axis perforation in the middle of the horizontal section of the inverted L-shaped fixed keel and the single-sliding through-axis perforation on the sliding seat at intervals to connect the horizontal section of the inverted L-shaped fixed keel and the sliding seat in series, and tighten and fix both ends of the single-sliding through-axis with nuts; Adjust the distance between the sliding seats, and then fix the top secondary keel rods on the sliding seats with self-tapping screws or by welding;

[0025] J. Installation of the cover surface: Bend the galvanized iron sheet into the required shape according to the design dimensions, apply an inner waterproof coating film on the inner surface of the cover surface, and then fix the cover surface on the fixed secondary keel rods, high-side secondary keel rods, low-side secondary keel rods and top secondary keel rods with self-tapping screws. After fixing the cover surface, lay a self-adhesive waterproof coiled material or apply a waterproof coating film on the outer surface of the cover surface as the outer waterproof layer.

[0026] The present invention has the following beneficial effects compared with the prior art:

[0027] 1. The cover joint device for the deformation joint of the ultra-wide small-height difference parapet roof of the present invention mainly includes a bendable sliding keel assembly, a high-side sliding keel assembly, a top sliding keel, a low-side sliding keel assembly, a plurality of inverted L-shaped fixed keels and a plurality of I-shaped fixed keels. Among them, the high-side sliding keel assembly is connected to the vertical sections of each inverted L-shaped fixed keel through two single-sliding through shafts, so that the high-side sliding keel assembly can slide along the axial direction of the single-sliding through shaft. The horizontal sections of each inverted L-shaped fixed keel are connected to the top sliding keel through a single-sliding through shaft, so that the top sliding keel can slide along the axial direction of the single-sliding through shaft. The horizontal section of the inverted L-shaped fixed keel is hinged to the bendable sliding keel assembly through a rotary sliding through shaft, and the bendable sliding keel assembly is connected to the tops of each I-shaped fixed keel through a rotary sliding through shaft, so that the bendable sliding keel assembly can not only rotate around the rotary sliding through shaft, but also slide along the axial direction of the rotary sliding through shaft. The I-shaped fixed keel is connected to the low-side sliding keel assembly through two single-sliding through shafts, so that the low-side sliding keel assembly can slide along the axial direction of the single-sliding through shaft. Thus, the overall cover joint device can adapt to the relative deformation of the building in the three directions of up and down, left and right, and front and back, without causing internal forces in the building structure or the cover joint device, thereby effectively avoiding damage to the building structure or the cover joint device. The present invention can be applied to the cover joint requirements of deformation joints with a relatively wide width, which has exceeded the scope specified in the existing codes and standard drawings. At the same time, there is a certain height difference between the roofs of two buildings, but the height difference is relatively small compared with the height difference of the corner-type deformation joint. The structure is simple, safe and reliable, the construction is convenient and the construction quality can be guaranteed. It can move in three directions, effectively solving the technical problems existing in the construction process of deformation joints with a large width and a certain height difference, but a relatively small height difference, and filling the technical gap.

[0028] 2. A cover surface is fixed on the low-side sliding keel assembly, the bendable sliding keel assembly, the top sliding keel and the high-side sliding keel assembly of the cover joint device for the deformation joint of the ultra-wide small-height difference parapet roof of the present invention. The inner surface of the cover surface is covered with an inner waterproof coating film, and the outer surface of the cover surface is covered with an outer waterproof coating film. The cover surface is fixed on the fixed secondary keel rods, high-side secondary keel rods, low-side secondary keel rods and top secondary keel rods with self-tapping screws. The structure is stable and the installation is simple.

[0029] 3. The cover joint device for the deformation joint of the ultra-wide and small-height difference parapet roof of the present invention further includes a water stop belt and a fireproof belt. The water stop belt is made of rubber sheet material and can be used in natural environments with sunlight, humidity, and cold for a long time. The fireproof belt includes two layers of stainless steel liners and a refractory fiber felt sandwiched between the two layers of stainless steel liners, which can meet the fire resistance limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the schematic explosion structure diagram of the present invention;

[0031] Figure 2 is the schematic side elevation structure diagram of the present invention;

[0032] Figure 3 is the schematic diagram of one side structure of the present invention after removing the cover;

[0033] Figure 4 is the schematic diagram of the other side structure of the present invention after removing the cover;

[0034] Figure 5 is the schematic structure diagram of the inverted L-shaped fixed keel of the present invention;

[0035] Figure 6 is the schematic structure diagram of the I-shaped fixed keel of the present invention;

[0036] Figure 7 is the schematic structure diagram of the bendable sliding keel assembly of the present invention;

[0037] Figure 8 is the schematic structure diagram of the low-side sliding keel assembly of the present invention;

[0038] Figure 9 is the schematic structure diagram of the high-side sliding keel assembly of the present invention;

[0039] Figure 10 is the schematic structure diagram of the top sliding keel of the present invention.

[0040] The meanings of the reference numerals in the drawings of the present invention are as follows: 1. Cover; 21. I-shaped fixed keel; 22. Inverted L-shaped fixed keel; 23. Single-sliding through-axis perforation; 24. Rotating sliding through-axis perforation; 31. Bendable sliding keel assembly; 311. Bendable keel frame; 312. Fixed secondary keel rod; 313. Long galvanized square pipe; 314. Short galvanized square pipe; 32. High-side sliding keel assembly; 321. High-side galvanized square pipe; 322. High-side secondary keel rod; 33. Low-side sliding keel assembly; 331. Low-side galvanized square pipe; 332. Low-side secondary keel rod; 34. Top sliding keel; 341. Top secondary keel rod; 342. Sliding seat; 4. Rotating sliding through-axis; 5. Single-sliding through-axis; 6. Water stop belt; 7. Fireproof belt; 81. High-side parapet; 82. Low-side parapet. DETAILED DESCRIPTION OF THE INVENTION

[0041] The present invention will be further described below in conjunction with specific embodiments.

[0042] Such as Figures 1-10As shown in the figure, a covering joint device for a deformation joint of a super-wide parapet roof with a small height difference includes a bendable and slidable keel assembly 31, a high-side slidable keel assembly 32, a top slidable keel 34, a low-side slidable keel assembly 33, a plurality of inverted L-shaped fixed keels 22 fixed on the side of the high-side parapet 81, a plurality of I-shaped fixed keels 21 fixed on the side of the low-side parapet 82, a waterstop 6 and a fireproof belt 7. The fireproof belt 7 includes two layers of stainless steel liners and a refractory fiber felt sandwiched between the two layers of stainless steel liners. The fireproof belt 7 is tested for its fire resistance limit according to GB / T9978-1999 "Test Method for Fire Resistance of Building Components" and should meet the requirements of 1h to 4h. The fireproof belt 7 is fixed between the high-side parapet 81 and the low-side parapet 82. The waterstop 6 is made of a 1.5mm thick ethylene propylene diene monomer (EPDM) rubber sheet and can be used in the natural environment of sunlight, humidity, and cold for a long time. When connection is needed in the length direction, it can be bonded with a lap joint adhesive. The waterstop 6 is fixedly installed on the side of the high-side parapet 81, the top of the high-side parapet 81, between the top of the high-side parapet 81 and the top of the low-side parapet 82, the top of the low-side parapet 82, and the side of the low-side parapet 82.The high-side sliding keel assembly 32 includes multiple vertically arranged high-side galvanized square tubes 321 and multiple high-side secondary keel rods 322 fixedly connected (fixed by self-tapping screws or welded) to the high-side galvanized square tubes 321. Single-sliding through-axis perforations 23 are provided at both the upper and lower parts of the high-side galvanized square tubes 321. The inverted L-shaped fixed keel 22 is made of galvanized square tubes. Single-sliding through-axis perforations 23 are provided at the upper and lower parts of the vertical section of the inverted L-shaped fixed keel 22 and at the middle part of the horizontal section of the inverted L-shaped fixed keel 22. A rotating sliding through-axis perforation 24 is provided at the end of the horizontal section of the inverted L-shaped fixed keel 22. The top sliding keel 34 includes top secondary keel rods 341 and multiple sliding seats 342 fixedly connected (fixed by self-tapping screws or welded) to the top secondary keel rods 341. The sliding seats 342 are made of galvanized square tubes with a length of 60 mm. Single-sliding through-axis perforations 23 are provided on the sliding seats 342. The bendable sliding keel assembly 31 includes multiple groups of parallel bendable keel frames 311 and multiple fixed secondary keel rods 312 fixedly connected (fixed by self-tapping screws or welded) to the multiple groups of bendable keel frames 311. The bendable keel frame 311 includes a long galvanized square tube 313 and a short galvanized square tube 314 hinged by a hinge. The ends of the long galvanized square tube 313 and the short galvanized square tube 314 are cut into arc shapes. Rotating sliding through-axis perforations 24 are provided at the ends of the long galvanized square tube 313 and the short galvanized square tube 314. The I-shaped fixed keel 21 is made of galvanized square tubes. A rotating sliding through-axis perforation 24 is provided at the top end of the I-shaped fixed keel 21. Single-sliding through-axis perforations 23 are provided at both the upper and lower parts of the I-shaped fixed keel 21. The top end of the I-shaped fixed keel 21 extends 30 - 40 mm beyond the top of the low-side parapet 82. The end of the horizontal section of the inverted L-shaped fixed keel 22 extends 100 - 150 mm beyond the thickness of the high-side parapet 81. The low-side sliding keel assembly 33 includes multiple vertically arranged low-side galvanized square tubes 331 and multiple low-side secondary keel rods 332 fixedly connected (fixed by self-tapping screws or welded) to the low-side galvanized square tubes 331. Single-sliding through-axis perforations 23 are provided at both the upper and lower parts of the low-side galvanized square tubes 331.The vertical sections of the high-side sliding keel assemblies 32 and the respective inverted L-shaped fixed keels 22 are connected by two single-sliding through-shafts 5 (the two single-sliding through-shafts 5 are inserted into the single-sliding through-shaft perforations 23 in the upper and lower parts of the high-side galvanized square pipe 321 and the single-sliding through-shaft perforations 23 in the upper and lower parts of the vertical sections of the inverted L-shaped fixed keels 22), and the high-side galvanized square pipe 321 and the inverted L-shaped fixed keel 22 are spaced apart. The high-side sliding keel assemblies 32 can slide axially along the single-sliding through-shafts 5. The horizontal sections of the respective inverted L-shaped fixed keels 22 are connected to the top sliding keel 34 by a single-sliding through-shaft 5 (the single-sliding through-shaft 5 is inserted into the single-sliding through-shaft perforation 23 in the middle of the horizontal section of the inverted L-shaped fixed keel 22 and the single-sliding through-shaft perforation 23 on the sliding seat 342), and the sliding seat 342 and the inverted L-shaped fixed keel 22 are spaced apart. The sliding seat 342 can slide axially along the single-sliding through-shaft 5. The horizontal section of the inverted L-shaped fixed keel 22 is hinged to the bendable sliding keel assembly 31 by a rotating through-shaft 4 (the rotating through-shaft 4 is inserted into the rotating through-shaft perforation 24 in the horizontal section of the inverted L-shaped fixed keel 22 and the rotating through-shaft perforation 24 at the end of the short galvanized square pipe 314). The bendable sliding keel assembly 31 is connected to the tops of the respective I-shaped fixed keels 21 by a rotating through-shaft 4 (the rotating through-shaft 4 is inserted into the rotating through-shaft perforation 24 at the end of the long galvanized square pipe 313 and the rotating through-shaft perforation 24 at the top of the I-shaped fixed keel 21). The bendable sliding keel assembly 31 can rotate around the rotating through-shaft 4 and also slide axially along the rotating through-shaft 4. The I-shaped fixed keels 21 are connected to the low-side sliding keel assemblies 33 by two single-sliding through-shafts 5 (the two single-sliding through-shafts 5 are inserted into the single-sliding through-shaft perforations 23 in the upper and lower parts of the I-shaped fixed keels 21 and the single-sliding through-shaft perforations 23 in the upper and lower parts of the low-side galvanized square pipe 331), and the low-side galvanized square pipe 331 and the I-shaped fixed keel 21 are spaced apart. The low-side sliding keel assemblies 33 can slide axially along the single-sliding through-shafts 5. A cover surface 1 is fixed on the low-side sliding keel assemblies 33, the bendable sliding keel assemblies 31, the top sliding keel 34, and the high-side sliding keel assemblies 32. The cover surface 1 is made of galvanized iron sheet. An inner waterproof coating film is provided on the inner surface of the cover surface 1, and an outer waterproof layer (waterproof coiled material or waterproof coating film) is provided on the outer surface of the cover surface 1. The cover surface 1 is fixed to the fixed secondary keel rods 312, the high-side secondary keel rods 322, the low-side secondary keel rods 332, and the top secondary keel rods 341 by self-tapping screws.

[0043] In the above structure, the single-sliding through-shaft 5 is made of a smooth round steel bar, with threads provided at both ends. After passing through the corresponding single-sliding through-shaft perforations 23, nuts are fixed at both ends. The rotating through-shaft 4 is made of a smooth round steel bar, with threads provided at both ends. After passing through the corresponding rotating through-shaft perforations 24, nuts are fixed at both ends.

[0044] When constructing the joint covering device for the ultra-wide and small height-difference parapet roof deformation joint, it includes the following steps:

[0045] A. Using the outer edge line of the higher side of the deformation joint as the baseline, measure the actual size of the deformation joint. According to the actual size, design and calculate the specific sizes of each component of the joint covering device, and draw the processing drawings of the components.

[0046] B. Install the fireproof belt 7 in the deformation joint between the higher side parapet 81 and the lower side parapet 82.

[0047] C. Apply the base adhesive on the tops of the higher side parapet 81 and the lower side parapet 82, and on the sides of the higher side parapet 81 and the lower side parapet 82. At the same time, apply the adhesive on both ends of the waterstop 6. Paste both ends of the waterstop 6 on the tops of the higher side parapet 81 and the lower side parapet 82, and on the sides of the higher side parapet 81 and the lower side parapet 82 respectively, completely covering the deformation joint, and keep the waterstop 6 in a certain natural overhang state.

[0048] D. Stretch a line through both ends of the higher side parapet 81. Fix multiple inverted L-shaped fixed keels 22 on the wall surface of the higher side parapet 81 with expansion screws at a certain interval. The end of the horizontal section of the inverted L-shaped fixed keel 22 extends 100 - 150 mm beyond the thickness of the higher side parapet 81. Pad and level the top end and the lower part of the wall surface of the higher side parapet 81 to ensure that the corresponding single sliding through holes 23 and rotating sliding through holes 24 on each inverted L-shaped fixed keel 22 are in a straight line.

[0049] E. Stretch a line through both ends of the lower side parapet 82. Fix the I-shaped fixed keels 21 on the wall surface of the lower side parapet 82 with expansion screws at a certain interval. The top end of the I-shaped fixed keel 21 extends 30 - 40 mm beyond the top of the lower side parapet 82. Pad and level the lower part of the wall surface of the lower side parapet 82 to ensure that the corresponding single sliding through holes 23 and rotating sliding through holes 24 on each I-shaped fixed keel 21 are in a straight line.

[0050] F. Install the bendable sliding keel assembly 31: Make multiple bendable keel frames 311 by hinging a long galvanized square pipe 313 and a short galvanized square pipe 314. Pass a rotating sliding through shaft 4 through the rotating sliding through holes 24 at the horizontal section of each inverted L-shaped fixed keel 22 and the rotating sliding through holes 24 at the end of the short galvanized square pipe 314 at intervals to connect the inverted L-shaped fixed keels 22 and the bendable keel frames 311 in series; similarly, pass a rotating sliding through shaft 4 through the rotating sliding through holes 24 at the top end of each I-shaped fixed keel 21 and the rotating sliding through holes 24 at the end of the long galvanized square pipe 313 at intervals to connect the I-shaped fixed keels 21 and the bendable keel frames 311 in series; tighten and fix both ends of the rotating sliding through shaft 4 with nuts; adjust the spacing between the bendable keel frames 311, and then fix multiple fixed secondary keel rods 312 on the bendable keel frames 311 with self-tapping screws or by welding.

[0051] G. Install the high-side sliding keel assembly 32: Pass two single-sliding through-shafts 5 at intervals through the single-sliding through-shaft perforations 23 in the upper and lower parts of each high-side galvanized square pipe 321 and the single-sliding through-shaft perforations 23 in the upper and lower parts of the vertical section of the inverted L-shaped fixed keel 22 to connect the vertical part of the inverted L-shaped fixed keel 22 and the high-side galvanized square pipe 321 in series, and tighten and fix both ends of the single-sliding through-shaft 5 with nuts; adjust the spacing of the high-side galvanized square pipes 321, and then fix multiple high-side secondary keel rods 322 to the high-side galvanized square pipes 321 with self-tapping screws or by welding.

[0052] H. Install the low-side sliding keel assembly 33: Pass two single-sliding through-shafts 5 at intervals through the single-sliding through-shaft perforations 23 in the upper and lower parts of the I-shaped fixed keel 21 and the single-sliding through-shaft perforations 23 in the upper and lower parts of the low-side galvanized square pipe 331 to connect the I-shaped fixed keel 21 and the low-side galvanized square pipe 331 in series, and tighten and fix both ends of the single-sliding through-shaft 5 with nuts; adjust the spacing of the low-side galvanized square pipes 331, and then fix multiple low-side secondary keel rods 332 to the low-side galvanized square pipes 331 with self-tapping screws or by welding.

[0053] I. Install the top sliding keel 34: Pass a single-sliding through-shaft 5 at intervals through the single-sliding through-shaft perforation 23 in the middle of the horizontal section of the inverted L-shaped fixed keel 22 and the single-sliding through-shaft perforation 23 on the sliding seat 342 to connect the horizontal section of the inverted L-shaped fixed keel 22 and the sliding seat 342 in series, and tighten and fix both ends of the single-sliding through-shaft 5 with nuts; adjust the spacing of the sliding seats 342, and then fix the top secondary keel rods 341 to the sliding seats 342 with self-tapping screws or by welding.

[0054] J. Install the cover 1: Bend the galvanized iron sheet into the required shape according to the design dimensions. Since the width of the galvanized iron sheet is limited, the cover 1 can be connected in a lapped manner. When lapping, it can be fixed with glue or blind rivets. The lap length is 25 mm. Apply a layer of inner waterproof coating on the inner surface of the cover 1, and then fix the cover 1 to the fixed secondary keel rods 312, high-side secondary keel rods 322, low-side secondary keel rods 332, and top secondary keel rods 341 with self-tapping screws. After fixing the cover 1, lay a layer of self-adhesive waterproof coil or apply a layer of waterproof coating on the outer surface of the cover 1 as the outer waterproof layer. Note when constructing the outer waterproof layer: 1. The self-tapping screws for fixing the cover 1 must be completely covered. 2. The outer waterproof layer should wrap the edge of the inner waterproof coating, and the overlapping part of the wrapping edge should be no less than 30 mm.

Claims

1. A covering joint device for a roof deformation joint of a super-wide and small-height parapet wall, characterized in that: It includes a bendable sliding keel assembly (31), a high-side sliding keel assembly (32), a top sliding keel (34), a low-side sliding keel assembly (33), a plurality of inverted L-shaped fixed keels (22) fixed to the side of the high-side parapet wall (81), and a plurality of I-shaped fixed keels (21) fixed to the side of the low-side parapet wall (82). Single-sliding through-axis perforations (23) are provided at the upper part, lower part of the vertical section of the inverted L-shaped fixed keel (22), and the middle part of the horizontal section of the inverted L-shaped fixed keel (22). A rotating sliding through-axis perforation (24) is provided at the end of the horizontal section of the inverted L-shaped fixed keel (22). The high-side sliding keel assembly (32) is connected to the vertical sections of the respective inverted L-shaped fixed keels (22) through two single-sliding through-axes (5). The horizontal sections of the respective inverted L-shaped fixed keels (22) are connected to the top sliding keel (34) through a single-sliding through-axis (5). The horizontal section of the inverted L-shaped fixed keel (22) is hinged to the bendable sliding keel assembly (31) through a rotating sliding through-axis (4). The bendable sliding keel assembly (31) is connected to the tops of the respective I-shaped fixed keels (21) through a rotating sliding through-axis (4). The I-shaped fixed keels (21) are connected to the low-side sliding keel assembly (33) through two single-sliding through-axes (5). A cover surface (1) is fixed on the low-side sliding keel assembly (33), the bendable sliding keel assembly (31), the top sliding keel and (34) the high-side sliding keel assembly (32). The covering joint device further includes a waterstop belt (6) and a fireproof belt (7). The fireproof belt (7) includes two layers of stainless steel liners and a refractory fiber felt sandwiched between the two layers of stainless steel liners. The fireproof belt (7) is fixed between the high-side parapet wall (81) and the low-side parapet wall (82). The waterstop belt (6) is made of a rubber sheet material. The waterstop belt (6) is fixedly installed on the side of the high-side parapet wall (81), the top of the high-side parapet wall (81), between the tops of the high-side parapet wall (81) and the low-side parapet wall (82), the top of the low-side parapet wall (82), and the side of the low-side parapet wall (82). A rotating sliding through-axis perforation (24) is provided at the top end of the I-shaped fixed keel (21). Single-sliding through-axis perforations (23) are provided at the upper and lower parts of the I-shaped fixed keel (21). The top end of the I-shaped fixed keel (21) protrudes 30-40 mm above the top of the low-side parapet wall (82). The end of the horizontal section of the inverted L-shaped fixed keel (22) protrudes 100-150 mm beyond the thickness of the high-side parapet wall (81).

2. The covering joint device for a roof deformation joint of a super-wide and small-height parapet wall according to claim 1, characterized in that: The bendable sliding keel assembly (31) includes multiple groups of bendable keel frames (311) arranged in parallel and multiple fixed secondary keel rods (312) fixedly connected to the multiple groups of bendable keel frames (311). The bendable keel frame (311) includes a long galvanized square pipe (313) and a short galvanized square pipe (314) hinged by a hinge. The ends of the long galvanized square pipe (313) and the short galvanized square pipe (314) are provided with rotating sliding through-axis perforations (24).

3. The joint covering device for the roof deformation joint of a super-wide and small-height difference parapet wall according to claim 2, characterized in that: The high-side sliding keel assembly (32) includes multiple vertically arranged high-side galvanized square pipes (321) and multiple high-side secondary keel rods (322) fixedly connected to the high-side galvanized square pipes (321). Single sliding through-axis perforations (23) are provided in both the upper and lower parts of the high-side galvanized square pipes (321). The high-side galvanized square pipes (321) are arranged at intervals from the inverted L-shaped fixed keel (22).

4. The joint covering device for the roof deformation joint of a super-wide and small-height difference parapet wall according to claim 3, characterized in that: The low-side sliding keel assembly (33) includes multiple vertically arranged low-side galvanized square pipes (331) and multiple low-side secondary keel rods (332) fixedly connected to the low-side galvanized square pipes (331). Single sliding through-axis perforations (23) are provided in both the upper and lower parts of the low-side galvanized square pipes (331). The low-side galvanized square pipes (331) are arranged at intervals from the I-shaped fixed keel (21).

5. The joint covering device for the roof deformation joint of a super-wide and small-height difference parapet wall according to claim 4, characterized in that: The top sliding keel (34) includes a top secondary keel rod (341) and multiple sliding seats (342) fixed on the top secondary keel rod (341). Single sliding through-axis perforations (23) are provided on the sliding seats (342). The sliding seats (342) are arranged at intervals from the inverted L-shaped fixed keel (22).

6. The joint covering device for the roof deformation joint of a super-wide and small-height difference parapet wall according to claim 5, characterized in that: The material of the cover surface (1) is galvanized iron sheet. An inner waterproof coating film is covered on the inner surface of the cover surface (1), and an outer waterproof layer is covered on the outer surface of the cover surface (1). The cover surface (1) is fixed on the fixed secondary keel rod (312), the high-side secondary keel rod (322), the low-side secondary keel rod (332), and the top secondary keel rod (341) by self-tapping screws.

7. A construction method for a joint covering device for a roof deformation joint of a super-wide and small-height difference parapet wall, characterized in that This method includes the following steps: A. Taking the outer edge line of the high side of the deformation joint as the baseline, measuring the actual size of the deformation joint, designing and calculating the specific sizes of each component of the joint covering device according to the actual size, and drawing a component processing drawing; B. Installing the fireproof belt (7) in the deformation joint between the high-side parapet wall (81) and the low-side parapet wall (82); C. Apply the base adhesive on the tops and sides of the high-side parapet wall (81) and the low-side parapet wall (82), and also apply the adhesive on both ends of the waterstop (6). Paste both ends of the waterstop (6) on the tops and sides of the high-side parapet wall (81) and the low-side parapet wall (82) respectively to completely cover the deformation joint, and keep the waterstop (6) with a certain natural overhang; D. Stretch a string line at both ends of the high-side parapet wall (81), and fix multiple inverted L-shaped fixing keels (22) on the wall surface of the high-side parapet wall (81) at a certain interval with expansion screws. The end of the horizontal section of the inverted L-shaped fixing keel (22) extends 100 - 150 mm beyond the thickness of the high-side parapet wall (81). Pad and level the top end and the lower part of the wall surface of the high-side parapet wall (81) to ensure that the corresponding single sliding through holes (23) and rotating sliding through holes (24) on each inverted L-shaped fixing keel (22) are in a straight line; E. Stretch a string line at both ends of the low-side parapet wall (82), and fix the I-shaped fixing keels (21) on the wall surface of the low-side parapet wall (82) at a certain interval with expansion screws. The top end of the I-shaped fixing keel (21) extends 30 - 40 mm beyond the top of the low-side parapet wall (82). Pad and level the lower part of the wall surface of the low-side parapet wall (82) to ensure that the corresponding single sliding through holes (23) and rotating sliding through holes (24) on each I-shaped fixing keel (21) are in a straight line; F. Install the bendable sliding keel assembly (31): Make multiple bendable keel frames (311) by hinging a long galvanized square pipe (313) and a short galvanized square pipe (314). Pass a rotating sliding shaft (4) through the rotating sliding through holes (24) at the horizontal sections of each inverted L-shaped fixing keel (22) and the rotating sliding through holes (24) at the ends of the short galvanized square pipe (314) at intervals to connect the inverted L-shaped fixing keels (22) and the bendable keel frames (311) in series; Similarly, pass a rotating sliding shaft (4) through the rotating sliding through holes (24) at the top ends of each I-shaped fixing keel (21) and the rotating sliding through holes (24) at the ends of the long galvanized square pipe (313) at intervals to connect the I-shaped fixing keels (21) and the bendable keel frames (311) in series; Tighten and fix both ends of the rotating sliding shaft (4) with nuts; Adjust the spacing between the bendable keel frames (311), and then fix multiple fixing secondary keel rods (312) on the bendable keel frames (311) with self-tapping screws or by welding; G. Install the high-side sliding keel assembly (32): Pass two single-sliding through-shafts (5) through the single-sliding through-shaft perforations (23) at the upper and lower parts of each high-side galvanized square pipe (321) and the single-sliding through-shaft perforations (23) at the upper and lower parts of the vertical section of the inverted L-shaped fixed keel (22) at intervals, connect the vertical part of the inverted L-shaped fixed keel (22) and the high-side galvanized square pipe (321) in series, and tighten and fix both ends of the single-sliding through-shaft (5) with nuts; adjust the spacing of the high-side galvanized square pipes (321), and then fix multiple high-side secondary keel bars (322) on the high-side galvanized square pipes (321) with self-tapping screws or by welding. H. Install the low-side sliding keel assembly (33): Pass two single-sliding through-shafts (5) through the single-sliding through-shaft perforations (23) at the upper and lower parts of the I-shaped fixed keel (21) and the single-sliding through-shaft perforations (23) at the upper and lower parts of the low-side galvanized square pipe (331) at intervals, connect the I-shaped fixed keel (21) and the low-side galvanized square pipe (331) in series, and tighten and fix both ends of the single-sliding through-shaft (5) with nuts; adjust the spacing of the low-side galvanized square pipes (331), and then fix multiple low-side secondary keel bars (332) on the low-side galvanized square pipes (331) with self-tapping screws or by welding. I. Install the top sliding keel (34): Pass a single-sliding through-shaft (5) through the single-sliding through-shaft perforation (23) in the middle of the horizontal section of the inverted L-shaped fixed keel (22) and the single-sliding through-shaft perforation (23) on the sliding seat (342) at intervals, connect the horizontal section of the inverted L-shaped fixed keel (22) and the sliding seat (342) in series, and tighten and fix both ends of the single-sliding through-shaft (5) with nuts; adjust the spacing of the sliding seats (342), and then fix the top secondary keel bars (341) on the sliding seats (342) with self-tapping screws or by welding. J. Install the cover (1): Bend the galvanized iron sheet into the required shape according to the design dimensions, apply an inner waterproof coating film on the inner surface of the cover (1), and then fix the cover (1) on the fixed secondary keel bars (312), high-side secondary keel bars (322), low-side secondary keel bars (332) and top secondary keel bars (341) with self-tapping screws. After fixing the cover (1), lay a self-adhesive waterproof coiled material or apply a waterproof coating film on the outer surface of the cover (1) as the outer waterproof layer.

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