A steel roof truss sliding device and a steel roof truss sliding construction method

Abstract

This invention relates to the field of building construction technology, specifically to a steel roof truss sliding device and a steel roof truss sliding construction method. The steel roof truss sliding device includes: a modified wall, located on top of an existing wall, with a detachable guide structure at the top of the modified wall; the steel roof truss is slidably connected to the guide structure to slide relative to it to the installation position along the guide direction of the guide structure; and a driving structure, connected to the steel roof truss to provide a driving force for the relative sliding of the steel roof truss. By setting up the modified wall and the driving structure, the steel roof truss can smoothly slide to the installation position under the guidance of the guide structure, avoiding the problem of large construction machinery being unable to enter due to narrow passages and numerous obstacles in old residential areas, thus achieving safe and efficient installation of the steel roof truss in confined spaces.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a steel roof truss sliding device and a steel roof truss sliding construction method. Background Technology

[0002] In current urban renewal projects, the renovation of old residential communities accounts for a significant proportion. Many of the buildings in these old communities are constructed with masonry, featuring pointed wooden ridge roofs (also known as "wooden roof ridges"). After decades of use, these buildings have entered a period of severe aging. The original wooden ridge structures pose serious fire hazards and exhibit numerous insurmountable defects in terms of safety, functionality, and durability. Replacing wooden ridges with steel roof trusses has become a key focus and challenge in the current renovation and upgrading of old urban residential communities.

[0003] The renovation of wooden roof ridges in old residential communities presents several challenges: Firstly, the buildings are often old and rectangular, housing multiple households. Narrow passageways between adjacent buildings and the presence of trees, cables, and walls around the structures prevent the use of large lifting equipment. Secondly, small cranes (such as mini-trucks) cannot cover the entire building area, requiring installation only on the gable or in specific areas, hindering steel truss installation. Thirdly, temporary relocation of all residents is difficult, raising concerns about rain protection during roof replacement. Therefore, safely and efficiently completing roof renovations in confined spaces while minimizing disruption to residents' daily lives has become a critical issue requiring immediate attention. Summary of the Invention

[0004] This invention provides a steel roof truss sliding device and a steel roof truss sliding construction method to solve the problem of how to safely and efficiently complete the roof renovation of old residential areas in a confined space while minimizing interference with residents' normal living conditions.

[0005] In a first aspect, the present invention provides a steel roof truss sliding device, comprising: The modified wall is set on top of the original wall, and the top of the modified wall is provided with a detachable guide structure. The steel roof truss is slidably connected to the guide structure so as to slide relative to the guide structure to the installation position along the guide direction of the guide structure. A drive structure connected to the steel roof truss to provide a driving force for relative sliding of the steel roof truss.

[0006] Beneficial effects: By modifying the walls and driving structure, the steel roof trusses can slide smoothly to the installation position under the guidance of the guide structure. This avoids the problem of large construction machinery being unable to enter due to narrow passages and numerous obstacles in old residential areas, thus achieving safe and efficient installation of steel roof trusses for each household even in confined spaces. This device and construction method minimizes disruption to residents' normal lives during construction and reduces roof exposure time, meeting the need to minimize the impact on residents' lives during the renovation of old residential areas.

[0007] In one optional embodiment, the guide structure is a slide rail, in which a slider is slidably disposed, and the steel roof truss has a mounting base for fixing at the mounting position, the mounting base being connected to the slider.

[0008] Beneficial effects: The design of the sliding track and slider enables precise positioning and smooth sliding of the steel roof truss in confined spaces, effectively solving the installation deviation problem caused by site limitations in traditional construction methods. At the same time, the connection between the slider and the mounting base ensures the structural stability of the steel roof truss during sliding, avoiding safety hazards caused by swaying or displacement.

[0009] In one alternative embodiment, the slider has a raised stop, the mounting base has a connecting slot, the stop is disposed in the connecting slot, and the driving structure applies a driving force to the steel roof truss so that the mounting base drives the slider to move relative to each other through the connecting slot and the stop.

[0010] Beneficial effects: The design of the stop block and the connecting slot ensures a reliable connection between the steel roof truss and the slider, guaranteeing efficient transmission of driving force. This connection method is simple in structure, easy to install, and effectively prevents the steel roof truss from separating from the slider during sliding, thus improving the safety and reliability of construction.

[0011] In one alternative embodiment, the slider has an arc-shaped transition surface on the side facing the sliding direction.

[0012] Beneficial effects: When the slider comes into contact with other components or obstacles within the track, the curved transition surface acts as a buffer and guide, reducing sliding resistance and allowing the slider to slide more smoothly within the track. Simultaneously, the curved transition surface design also reduces wear between the slider and the track, extending the device's service life.

[0013] In one optional embodiment, several oppositely arranged fasteners are fixedly provided on both sides of the slide rail. Each fastener has a fixing hole, and a fastener passes through the fixing hole and is disposed in the modified wall to fix the fastener to the modified wall.

[0014] Beneficial effects: The design of fasteners and fixtures ensures a stable connection between the slide and the modified wall, guaranteeing the stability and safety of the steel roof truss during the sliding process.

[0015] In one optional embodiment, a limiting component is provided at the top of the modified wall, a connecting hole is provided on the mounting base, the driving structure is an electric hoist, one end of the electric hoist is fixedly connected to the limiting component, and the hook of the electric hoist is connected to the connecting hole.

[0016] Beneficial effects: Electric hoists, as the driving mechanism, offer advantages such as compact structure, ease of operation, and high traction force, meeting the sliding requirements of steel roof trusses in confined spaces. Furthermore, the adjustable traction speed of the electric hoist allows for flexible adjustments based on actual construction conditions, ensuring a smooth and safe sliding process for the steel roof truss. In addition, the relatively simple installation and disassembly of electric hoists further improves construction efficiency.

[0017] In one optional embodiment, the modified wall includes precast ring beams and connecting structures, the connecting structures being located between adjacent precast ring beams and fixedly connected to each of the adjacent precast ring beams, and the mounting position being located at the top of the connecting structures.

[0018] Beneficial effects: By designing the renovated wall as a combination of precast ring beams and connecting structures, not only was the overall structural strength of the wall improved, but a reliable installation foundation for the steel roof truss was also provided. The standardized production method of the precast ring beams ensured consistency in component quality; the precast ring beams were installed in sections, lightweight, and could be handled manually. Meanwhile, the on-site cast-in-place connecting structures enhanced the integrity of the wall. This combination effectively solved the problem of insufficient load-bearing capacity in the walls of old buildings.

[0019] In one alternative embodiment, the connection structure consists of a structural column and a cast-in-place section, the top of which has a support embedded plate for fixed connection with the steel roof truss.

[0020] Beneficial effects: The combination of structural columns and cast-in-place sections significantly enhances the overall load-bearing capacity of the connecting structure. The cast-in-place section, through concrete pouring, forms an integrated load-bearing system with the structural columns and precast ring beams. The embedded plates at the supports ensure a reliable connection between the steel roof truss and the concrete structure, guaranteeing the precision of the steel roof truss installation.

[0021] In one optional embodiment, the top of the precast ring beam is provided with a plurality of lifting rings spaced apart along the extension direction of the precast ring beam.

[0022] Beneficial effects: The lifting rings greatly facilitated the entire construction process. Firstly, during the steel roof truss hoisting phase, workers could directly use the lifting rings for lifting operations, eliminating the need for additional temporary hoisting points, simplifying the hoisting process and improving construction efficiency. Secondly, as fixed limiting components for the electric hoist, the lifting rings ensured the stability of the traction process.

[0023] Secondly, the present invention also provides a method for sliding steel roof trusses, employing the steel roof truss sliding device described in any of the above-mentioned solutions, comprising the following steps: Scaffolding was erected around the building to be renovated, the old roof was demolished, and a new wall was installed on top of the original wall. The new wall was then connected and bonded to the original wall using steel bars and mortar. The guide structure is fixed to the top of the modified wall. The assembled steel roof truss is placed on the modified wall using lifting equipment and slides in cooperation with the guide structure. The drive structure is used to drive the steel roof truss to slide relative to the guide structure in the direction of the guide structure to the installation position. Once the steel roof truss has slid to the installation position, use jacks to lift it up, remove the guide structure, then lower the steel roof truss and fix it in the installation position.

[0024] Since the steel roof truss sliding construction method includes a steel roof truss sliding device, which has the same effect as the steel roof truss sliding device, it will not be described in detail here. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a steel roof truss sliding device according to an embodiment of the present invention. Figure 1 ; Figure 2This is a schematic diagram of a steel roof truss sliding device according to an embodiment of the present invention. Figure 2 ; Figure 3 This is an exploded view of a steel roof truss sliding device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the slide structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the slider structure according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures: 1. Modified wall; 11. Precast ring beam; 12. Connecting structure; 121. Structural column; 122. Cast-in-place section; 2. Slide rail; 21. Fixture; 3. Steel roof truss; 31. Mounting base; 32. Connecting groove; 33. Connecting hole; 4. Sliding block; 41. Stop block; 42. Arc transition surface; 5. Limiting component; 6. Support embedded plate; 7. Lifting ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0030] According to an embodiment of the present invention, a steel roof truss sliding device is provided, comprising: a modified wall 1 and a driving structure. The modified wall 1 is disposed on top of the original wall, and a detachable guide structure is provided on the top of the modified wall 1. The steel roof truss 3 is slidably connected to the guide structure to slide relative to it to the installation position along the guiding direction of the guide structure. The driving structure is connected to the steel roof truss 3 to provide a driving force for relative sliding of the steel roof truss 3.

[0031] Specifically, the modified wall 1 is connected to the original wall (not shown) by steel bars, and mortar is laid at the connection between the modified wall 1 and the original wall to bond the modified wall 1 to the original wall, ensuring the stability of the connection. The top of the modified wall 1 has a guide structure, which is arranged along the extension direction of the modified wall 1. The bottom of both sides of the steel roof truss 3 is slidably connected to the guide structures of the two sides of the modified wall 1. The driving structure (not shown) can apply a driving force to the steel roof truss 3, so that the steel roof truss 3 can slide relative to the guide direction of the guide structure, that is, slide relative to the extension direction of the modified wall 1, and slide to the installation position. In this way, the roof can still be modified when large engineering machinery is not available. At the same time, it is not necessary to relocate all residents; only the residents of the modified house need to be relocated. After the modification is completed, the next house can be modified, and the residents can move in immediately after the house is modified.

[0032] When renovating the roofs, a location accessible to a small truck crane is selected at the first unit of each row of buildings. After demolishing the wooden roofs of the first and second units, the modified wall 1 and guiding structure are laid, and the first steel roof truss 3 is hoisted at the first unit's location. Then, the wooden roof of the third unit is demolished, the modified wall 1 and guiding structure are laid, the first steel roof truss 3 is slid to the second unit's location, and the second steel roof truss 3 is hoisted at the first unit's location. Next, the wooden roof truss of the fourth unit is demolished, the modified wall 1 and guiding structure are laid, the first and second steel roof trusses 3 are slid to the second and third units' locations, and the third steel roof truss 3 is hoisted again at the first unit's location. This process is repeated until all steel roof trusses 3 are installed for all units. Furthermore, in case of rain or snow during construction, the steel roof trusses 3 can be directly used to protect the buildings, reducing their exposure time. This method minimizes disruption to residents' daily lives during construction and reduces roof exposure time, meeting the need to minimize the impact on residents' lives during the renovation of old residential areas.

[0033] By modifying wall 1 and the drive structure, the steel roof truss 3 can slide smoothly to the installation position under the guidance of the guide structure. This avoids the problem of large construction machinery being unable to enter due to narrow passages and numerous obstacles in old residential areas, thus achieving safe and efficient installation of the steel roof truss 3 in confined spaces. At the same time, the device minimizes disruption to residents' normal lives during construction, meeting the need to minimize the impact on residents' lives during the renovation of old residential areas.

[0034] In one embodiment, the guide structure is a slide 2, and a slider 4 is slidably disposed in the slide 2. The steel roof truss 3 has a mounting base 31, which is used to fix it in the mounting position and is connected to the slider 4.

[0035] Specifically, such as Figure 2 , Figure 4 and Figure 5 As shown, the guide structure is a slide rail 2, and the slider 4 is slidably disposed within the slide rail 2. The slider 4 can slide relative to the guide direction of the slide rail 2. The bottom of both sides of the steel roof truss 3 has mounting bases 31, which are disposed on the slider 4. When the drive structure applies a driving force to the steel roof truss 3, the steel roof truss 3 applies a driving force to the slider 4 through the mounting bases 31, causing the slider 4 to slide relative to the guide direction of the slide rail 2, thereby driving the steel roof truss 3 to move. After the steel roof truss 3 moves to the installation position, the mounting base 31 is lifted using a jack, and then the slide rail 2 and slider 4 are removed. After removal, the mounting base 31 is placed in the installation position of the modified wall 1 and fixed in the installation position.

[0036] The coordinated design of the slide rail 2 and the slider 4 enables precise positioning and smooth sliding of the steel roof truss 3 in confined spaces, effectively solving the installation deviation problem caused by site limitations in traditional construction methods. Simultaneously, the connection between the slider 4 and the mounting base 31 ensures the structural stability of the steel roof truss 3 during sliding, avoiding safety hazards caused by swaying or displacement.

[0037] In one embodiment, the slider 4 has a protruding stop 41, the mounting base 31 has a connecting slot 32, the stop 41 is disposed in the connecting slot 32, and the driving structure applies a driving force to the steel roof truss 3 so that the mounting base 31 drives the slider 4 to move relative to each other through the connecting slot 32 and the stop 41.

[0038] Specifically, such as Figure 2 and Figure 5 As shown, the top of the slider 4 has a protruding stop 41, and the mounting base 31 has a connecting slot 32, which is a U-shaped groove. When the mounting base 31 is positioned on top of the slider 4, the stop 41 is positioned within the connecting slot 32. When the driving structure applies a driving force to the steel roof truss 3, the mounting base 31 applies a pushing force to the stop 41 through the bottom of the connecting slot 32, thereby pushing the slider 4 to move. The opening direction of the connecting slot 32 faces the forward direction of the mounting base 31, and the stop 41 will not disengage from the connecting slot 32 during the sliding process.

[0039] The design of the stop block 41 and the connecting slot 32 ensures a reliable connection between the steel roof truss 3 and the slider 4, guaranteeing efficient transmission of driving force. This connection method is simple in structure and easy to install, while effectively preventing the steel roof truss 3 from separating from the slider 4 during sliding, thus improving the safety and reliability of construction.

[0040] In one embodiment, the slider 4 has an arc-shaped transition surface 42 on the side facing the sliding direction.

[0041] Specifically, such as Figure 5As shown, the sliding direction of slider 4 is the same as the forward direction of mounting base 31, and the arc-shaped transition surface 42 is located on the side of slider 4 facing the forward direction of mounting base 31. During sliding, when slider 4 comes into contact with other components or obstacles in slide 2, the arc-shaped transition surface 42 can act as a buffer and guide, reducing sliding resistance and allowing slider 4 to slide more smoothly in slide 2. At the same time, the design of arc-shaped transition surface 42 can also reduce wear between slider 4 and slide 2, extending the service life of the device.

[0042] In one embodiment, several oppositely arranged fasteners 21 are fixedly provided on both sides of the slide 2. The fasteners 21 have fixing holes, and fasteners are provided through the fixing holes and are set in the modified wall 1 so that the fasteners 21 are fixed to the modified wall 1.

[0043] Specifically, such as Figure 4 As shown, multiple fasteners 21 are provided on both sides of the slide rail 2, with the fasteners 21 positioned opposite each other. Each fastener 21 has a fixing hole (not shown), through which a fastener (not shown) passes and is fixed inside the modified wall 1, achieving a firm connection between the fastener 21 and the modified wall 1, thereby fixing the slide rail 2 to the top of the modified wall 1. When it is necessary to disassemble the slide rail 2, the fastener can be sawed off. Preferably, the fastener can be an expansion bolt or a pre-installed bolt.

[0044] Through the design of the fasteners and fixing parts 21, a stable connection between the slide rail 2 and the modified wall 1 is achieved, ensuring the stability and safety of the steel roof truss 3 during the sliding process.

[0045] In one embodiment, a limiting member 5 is provided at the top of the modified wall 1, a connecting hole 33 is provided on the mounting base 31, and the driving structure is an electric hoist (not shown). One end of the electric hoist is fixedly connected to the limiting member 5, and the hook of the electric hoist is connected to the connecting hole 33.

[0046] Specifically, such as Figure 2 As shown, a limiting component 5 is installed at the top of the modified wall 1. This limiting component 5 serves to fix one end of the electric hoist. A connecting hole 33 is provided on the mounting base 31. The hook of the electric hoist is connected to the mounting base 31 through the connecting hole 33, thereby realizing the traction of the steel roof truss 3. During the driving process, the electric hoist applies tension to the steel roof truss 3 by contracting and releasing the rope, making it slide smoothly along the slide rail 2.

[0047] The electric hoist, as the driving mechanism, boasts advantages such as compact structure, ease of operation, and high traction force, effectively meeting the sliding requirements of the steel roof truss 3 in confined spaces. Furthermore, the adjustable traction speed of the electric hoist allows for flexible adjustments based on actual construction conditions, ensuring a smooth and safe sliding process for the steel roof truss 3. In addition, the electric hoist is easy to install and dismantle, further improving construction efficiency.

[0048] In one embodiment, the modified wall 1 includes a precast ring beam 11 and a connecting structure 12. The connecting structure 12 is located between adjacent precast ring beams 11 and is fixedly connected to each adjacent precast ring beam 11. The mounting position is located at the top of the connecting structure 12.

[0049] Specifically, such as Figure 2 As shown, the precast ring beam 11 has steel bars extending from one side toward the connecting structure 12. After the steel bars extending from the two precast ring beams 11 are welded together, the connecting structure 12 is cast between the two precast ring beams 11. The connecting structure 12 provides a stable support point for the steel roof truss 3, and the top of the connecting structure 12 is the installation position.

[0050] By designing the modified wall 1 as a combination of precast ring beam 11 and connecting structure 12, not only is the overall structural strength of the wall improved, but a reliable installation foundation is also provided for the steel roof truss 3. The standardized production method of the precast ring beam 11 ensures the consistency of component quality, while the on-site cast connecting structure 12 enhances the integrity of the wall. This combination effectively solves the problem of insufficient load-bearing capacity of old building walls.

[0051] In one embodiment, the connecting structure 12 is composed of a structural column 121 and a cast-in-place section 122. The top of the cast-in-place section 122 has a support embedded plate 6, which is used for fixed connection with the steel roof truss 3.

[0052] Specifically, such as Figure 3 As shown, firstly, a structural column 121 is poured into the existing wall, and then a precast ring beam 11 is set on the top of the existing wall. The structural column 121 has reserved steel bars extending into the cast-in-place part 122. After the reserved steel bars and the steel bars of the precast ring beams 11 on both sides are welded and fixed, the support embedded plate 6 can be set. Then, the cast-in-place part 122 is poured, and the support embedded plate 6 is embedded in the cast-in-place part 122. The support embedded plate 6 is located in the installation position, and the mounting base 31 is fixedly connected to the support embedded plate 6.

[0053] The combination of structural column 121 and cast-in-place section 122 significantly improves the overall load-bearing capacity of the connecting structure 12. Through concrete pouring, the cast-in-place section 122 forms an integrated load-bearing system with the structural column 121 and the precast ring beam 11. The embedded support plate 6 ensures a reliable connection between the steel roof truss 3 and the concrete structure, guaranteeing the accuracy of the steel roof truss 3 installation.

[0054] In one embodiment, the top of the precast ring beam 11 is provided with a plurality of lifting rings 7 spaced apart along the extension direction of the precast ring beam 11.

[0055] Specifically, such as Figure 2 As shown, multiple lifting rings 7 are evenly arranged on the top of the precast ring beam 11 along its extension direction. The lifting rings 7 are embedded in the precast ring beam 11, providing convenient lifting points for the hoisting of the steel roof truss 3. At the same time, the lifting rings 7 also serve as limiting components 5 for fixing the electric hoist.

[0056] The installation of the lifting ring 7 greatly facilitates the entire construction process. On the one hand, during the hoisting stage of the steel roof truss 3, construction workers can directly use the lifting ring 7 for lifting operations without the need for additional temporary hoisting points, simplifying the hoisting process and improving construction efficiency. On the other hand, the lifting ring 7, as the fixed limiting component 5 of the electric hoist, ensures the stability of the traction process.

[0057] According to an embodiment of the present invention, another aspect provides a method for sliding construction of a steel roof truss 3. The steel roof truss 3 sliding device described in the above embodiments includes the following steps: Scaffolding was erected around the building to be renovated, the old roof was demolished, and a new wall 1 was installed on top of the original wall. The new wall 1 was then connected and bonded to the original wall using steel bars and mortar.

[0058] Specifically, scaffolding is erected around the exterior of the building to be renovated. Structural columns 121 are added to the existing walls. The old roof of the building to be renovated is demolished. Precast ring beams 11 are installed, each with rebar holes. Rebars are installed in the existing walls and inserted into the precast ring beams 11 to connect them to the existing walls. Adhesive mortar is laid at the bottom of the precast ring beams 11 to bond them to the existing walls. The structural columns 121 have reserved rebars extending into the cast-in-place section 122. After welding and fixing the reserved rebars to the rebars of the precast ring beams 11 on both sides, the support embedded plates 6 can be installed. Subsequently, the cast-in-place section 122 is poured, and the support embedded plates 6 are embedded within the cast-in-place section 122 to form the installation position.

[0059] The guide structure is fixed to the top of the modified wall 1. The assembled steel roof truss 3 is placed on the modified wall 1 using a lifting device and slides in cooperation with the guide structure. The drive structure is used to drive the steel roof truss 3 to slide relative to the guide structure in the direction of the guide structure to the installation position.

[0060] Specifically, the guide structure is a slide rail 2, which is fixed to the top of the modified wall 1 with fasteners. A slider 4 is installed inside the slide rail 2. A steel roof truss 3 is assembled on the ground. A lifting device is used to hoist the assembled steel roof truss 3 to the top of the building, and the steel roof truss 3 is placed on the slider 4, with the stop block 41 of the slider 4 extending into the connecting slot 32 of the mounting base 31. The fixed end of the electric hoist is installed on the lifting ring 7 of the precast ring beam 11, and the hook of the electric hoist is installed into the connecting hole 33 of the mounting base 31. The electric hoist is started to pull the steel roof truss 3 to the installation position.

[0061] Once the steel roof truss 3 has slid to the installation position, use jacks to lift the steel roof truss 3, remove the guide structure, then lower the steel roof truss 3 and fix it in the installation position.

[0062] Specifically, after the steel roof truss 3 slides to the installation position, place the jack on one side of the installation position and lift the installation base 31 with the jack to facilitate the removal of the slider 4 and the slide rail 2. After removal, use the jack to slowly lower the installation base 31, and then remove the jack to connect the installation base 31 with the support embedded plate 6 of the installation position. Then, the installation base 31 and the support embedded plate 6 can be fixedly connected.

[0063] When modifying the roof, first select a location where a small truck crane can be used at the first unit of each row of buildings. After removing the wooden roofs of the first and second units, lay the modified wall 1 and sliding track 2, and hoist the first steel roof truss 3 at the first unit's location. Then, remove the wooden roof of the third unit, lay the modified wall 1 and sliding track 2 for the third unit, slide the first steel roof truss 3 to the second unit's location, and hoist the second steel roof truss 3 at the first unit's location. Then, remove the wooden roof truss of the fourth unit, lay the modified wall 1 and sliding track 2 for the fourth unit, slide the first and second steel roof trusses 3 to the second and third units' locations, and hoist the third steel roof truss 3 again at the first unit's location. Repeat the above method until the steel roof trusses 3 of all houses are installed.

[0064] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A steel roof truss sliding device, characterized in that, include: The modified wall (1) is set on the top of the original wall. The top of the modified wall (1) is provided with a detachable guide structure. The steel roof truss (3) is slidably connected to the guide structure so as to slide relative to the installation position along the guide direction of the guide structure. A drive structure connected to the steel roof truss (3) to provide a driving force for relative sliding of the steel roof truss (3).

2. The steel roof truss sliding device according to claim 1, characterized in that, The guide structure is a slide (2), and a slider (4) is slidably arranged in the slide (2). The steel roof truss (3) has a mounting base (31), which is used to fix the installation position. The mounting base (31) is connected to the slider (4).

3. The steel roof truss sliding device according to claim 2, characterized in that, The slider (4) has a protruding stop (41), the mounting base (31) has a connecting slot (32), the stop (41) is disposed in the connecting slot (32), and the driving structure applies a driving force to the steel roof truss (3) so that the mounting base (31) drives the slider (4) to move relative to each other through the connecting slot (32) and the stop (41).

4. The steel roof truss sliding device according to claim 2, characterized in that, The slider (4) has an arc-shaped transition surface (42) on the side facing the sliding direction.

5. The steel roof truss sliding device according to claim 2, characterized in that, Several oppositely arranged fasteners (21) are fixedly provided on both sides of the slide (2). The fasteners (21) have fixing holes and fasteners are installed in the modified wall (1) through the fixing holes so that the fasteners (21) are fixed to the modified wall (1).

6. The steel roof truss sliding device according to any one of claims 2 to 5, characterized in that, The top of the modified wall (1) is provided with a limiting component (5), the mounting base (31) is provided with a connecting hole (33), the driving structure is an electric hoist, one end of the electric hoist is fixedly connected to the limiting component (5), and the hook of the electric hoist is connected to the connecting hole (33).

7. The steel roof truss sliding device according to claim 1, characterized in that, The modified wall (1) includes a precast ring beam (11) and a connecting structure (12). The connecting structure (12) is located between adjacent precast ring beams (11). The connecting structure (12) is fixedly connected to the adjacent precast ring beams (11) respectively. The installation position is located at the top of the connecting structure (12).

8. The steel roof truss sliding device according to claim 7, characterized in that, The connection structure (12) consists of a structural column (121) and a cast-in-place section (122). The top of the cast-in-place section (122) has a support embedded plate (6), which is used to fix the connection with the steel roof truss (3).

9. The steel roof truss sliding device according to claim 7, characterized in that, The top of the precast ring beam (11) is provided with a number of lifting rings (7) spaced apart along the extension direction of the precast ring beam (11).

10. A method for constructing a steel roof truss sliding structure, using the steel roof truss sliding device as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Scaffolding was erected around the building to be renovated, the old roof was demolished, and a renovation wall (1) was set on top of the original wall. The renovation wall (1) was connected and bonded to the original wall using steel bars and mortar. The guide structure is fixed on the top of the modified wall (1). The assembled steel roof truss (3) is placed on the modified wall (1) using a lifting device and slides in cooperation with the guide structure. The drive structure is used to drive the steel roof truss (3) to slide relative to the guide structure in the direction of the guide structure to the installation position. Once the steel roof truss (3) has slid to the installation position, use a jack to lift the steel roof truss (3), remove the guide structure, then lower the steel roof truss (3) and fix it in the installation position.

Images