Supporting device for steel bar truss floor support plate and mounting method

Abstract

The invention belongs to the technical field of floor bearing plate supporting, and discloses a supporting device for a steel bar truss floor bearing plate and an installation method.The supporting device comprises a supporting frame, a bearing assembly and a connecting assembly; the supporting frame comprises a top beam, a bottom beam parallel to the top beam at intervals, a connecting beam arranged between the top beam and the bottom beam and reinforcing beams arranged between the top beam and the bottom beam, the reinforcing beams are located on the two sides of the connecting beam, and the bearing assembly comprises a supporting rod arranged on the connecting beam and a bracket arranged on the top of the supporting rod. The supporting rod can drive the bracket to move relative to the connecting beam in the axial direction of the supporting rod so that the supporting rod can have the storage position hidden in the connecting beam and the supporting position capable of supporting the steel bar truss floor support plate, and the connecting assembly is arranged at the end of the supporting frame and used for fixedly connecting the end of the supporting frame to H-shaped steel. And therefore, the construction efficiency of the steel structure building is improved, and the trafficability of workers is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of floor deck support, and specifically relates to a support device and installation method for a steel truss floor deck. Background Art

[0002] Steel structure buildings are buildings that use construction steel to form a load-bearing structure. They usually use H-shaped steel to form a load-bearing structure, and use steel truss floor decking as the horizontal load-bearing member of the building structure. Concrete then solidifies on the steel truss floor decking to form a floor slab. Although the steel truss floor decking can be free of support in a certain span, for frame structures with large spans and large bays, it is still necessary to set up a certain support structure to avoid excessive deformation of the steel truss floor decking or even prevent local collapse.

[0003] The existing supporting structure is usually composed of supporting steel pipes and connecting steel pipes, wherein the supporting steel pipes are arranged in the vertical direction and are arranged at intervals. The connecting steel pipes are arranged in the horizontal direction and are arranged at intervals. The two ends of the connecting steel pipe are respectively connected to two adjacent supporting steel pipes. One end of the supporting steel pipe is in contact with the ground or the lower floor slab, and the other end of the supporting steel pipe is in contact with the steel truss floor slab. This results in the need to assemble on site when installing the supporting structure, which affects the construction efficiency of the steel structure building. In addition, since the supporting steel pipes need to be supported on the ground or the lower floor slab, the supporting structure will affect the passability of the staff. Summary of the Invention

[0004] The present application provides a support device for a steel truss floor deck to improve the installation efficiency of the support device, improve the construction efficiency of steel structure buildings, and ensure the passability of workers.

[0005] The technical solutions adopted in this application are: A support device for a steel bar truss floor deck, comprising: a support frame comprising a top beam, a bottom beam spaced apart and parallel to the top beam, a connecting beam disposed between the top beam and the bottom beam, and a reinforcing beam disposed between the top beam and the bottom beam, the reinforcing beam being located on both sides of the connecting beam; A supporting assembly, the supporting assembly comprising a supporting rod provided on the connecting beam and a bracket provided on the top of the supporting rod, the supporting rod being capable of driving the bracket to move relative to the connecting beam along its own axial direction, so that the supporting rod has a storage position hidden inside the connecting beam and a supporting position capable of supporting the steel truss floor deck; A connecting assembly is provided at the end of the supporting frame and is used for fixing the end of the supporting frame to the H-shaped steel.

[0006] By adopting the above technical solution, when using the supporting device in the present application to support a large-span steel truss floor deck, the supporting frame is first lifted to make the supporting frame rise and move between the two adjacent H-shaped steels above, and then the position of the supporting frame is adjusted to make the supporting frame rotate in the plane, and then the two ends of the supporting frame are respectively extended into the two H-shaped steels, and then the connecting assembly is operated to fix the supporting frame using the connecting assembly, so as to achieve fixed connection of the supporting frame to the two H-shaped steels, and then the supporting rod is driven to move the supporting rod from the storage position to the supporting position, and finally the wooden squares are placed on multiple brackets so that the brackets support the wooden squares, and the top end surface of the wooden squares is flush with the top end surface of the H-shaped steel, so that the wooden squares above the brackets can contact the bottom of the steel truss floor deck to support the steel truss floor deck.

[0007] The design of the support device in this application avoids the need to assemble the support device at the construction site, thereby greatly improving the construction efficiency of the steel structure building and avoiding the need to set up vertical support pipes on the ground or lower floor, thereby ensuring the passability of staff.

[0008] Furthermore, the supporting frame in the present application ensures the structural strength of the supporting frame by providing connecting beams and reinforcing beams, thereby ensuring the supporting effect of the supporting device on the steel truss floor deck.

[0009] Optionally, the supporting assembly also includes a guide column, the connecting beam is provided with a plurality of threaded holes along its axial direction, the outer peripheral surface of the support rod is provided with a waist-shaped groove, the length direction of the waist-shaped groove is parallel to the axial direction of the support rod, the guide column is threadedly connected to any of the threaded holes and extends into the waist-shaped groove, a locking rod is passed through the guide column, the groove wall of the waist-shaped groove is provided with a locking hole, and a magnetic part is provided in the locking hole. When the guide column contacts the bottom groove wall of the waist-shaped hole, the locking rod extends into the locking hole under the action of the magnetic attraction of the magnetic part.

[0010] By adopting the above technical solution, due to the different models of H-shaped steel, the thickness of the wing plate of the H-shaped steel will be different, and due to the different thickness of the wooden planks at different construction sites, the support position of the support rod needs to be adjusted according to the thickness of the wing plate of the H-shaped steel and the thickness of the wooden planks. In this application, a guide column is set so that when the support rod is in the support device, the guide column contacts the bottom groove wall of the waist-shaped groove, so as to utilize the cooperation between the guide column and the waist-shaped groove wall to limit the support position of the support rod, thereby increasing the flexibility of the support device, so that the support device can be suitable for various models of H-shaped steel and various thicknesses of wooden planks.

[0011] When adjusting the support position of the support rod according to the thickness of the H-shaped steel wing plate and the thickness of the wooden square, first rotate the guide column to separate the guide column from the threaded hole, then align the guide column with the threaded hole of the required support position of the support rod, and then thread the guide column and the threaded hole together to complete the adjustment of the support position of the support rod.

[0012] When the support rod moves to the supporting position, the guide column contacts the bottom wall of the waist-shaped groove, and then the locking rod is aligned with the locking hole. Then, the locking rod extends into the locking hole under the magnetic attraction of the magnetic part, so that the support rod is limited to the supporting position by the plug-in cooperation between the locking rod and the locking hole, thereby increasing the stability of the support rod in the supporting position, thereby greatly improving the stability of the support device when supporting the steel truss floor deck.

[0013] Optionally, a limiting arm is provided at the bottom of the support rod, and a stop arm is provided in the connecting beam. When the support rod is in the storage position, the stop arm can be engaged with the limiting arm to limit the support rod to the storage position. The stop arm is hinged to the connecting beam so that the stop arm can be released from the engaging engagement with the limiting arm by swinging.

[0014] By adopting the above technical solution, when the support rod is driven from the storage position toward the support position, the stop arm is rotated first, and then the stop arm is rotated around its own rotation axis to release the engagement between the stop arm and the limit arm, and then the support rod is driven, and finally the support rod is moved from the storage position to the support position to complete driving the support rod to the support position.

[0015] Optionally, a spring is provided in the connecting beam, and the spring acts on the supporting rod. When the supporting rod is in the storage position, the spring is deformed and applies a force to the supporting rod toward the supporting position.

[0016] By adopting the above technical solution, the stop arm is rotated so that the stop arm rotates around its own rotation axis and releases the locking fit with the limit arm. The spring gradually releases its elastic potential energy, and then the support rod moves from the storage position toward the supporting position under the action of the spring, so as to realize the automatic movement of the support rod from the storage position to the supporting position. In this process, the need for staff to manually drive the support rod is avoided, which on the one hand reduces the workload of staff and on the other hand increases the safety when using the support device.

[0017] Optionally, a fixing ring located at the bottom of the spring is provided inside the connecting beam, one end of the bottom of the spring abuts against the fixing ring, and one end of the bottom of the limiting arm can pass through the fixing ring, and an upwardly extending guide portion is provided on the top of the fixing ring, and the guide portion is located inside the spring.

[0018] By adopting the above technical solution, since one end of the spring contacts the fixing ring, the fixing ring can support the spring to increase the stability of the spring, thereby ensuring the elastic driving effect of the spring on the support rod; and since a guide portion is provided on the top of the fixing ring, the guide portion is located inside the spring, so that the guide portion can limit the spring to avoid relative sliding between the spring and the fixing ring, which causes the limit arm to be unable to extend out of the fixing ring, thereby ensuring that the limit arm can normally extend out of the fixing ring and engage with the stop arm.

[0019] Optionally, the stop arm has a clamping side that can be clamped with the limit arm and a diverging side opposite to the clamping side, and the interior of the connecting beam is provided with an elastic portion located on the diverging side and a positioning portion, the elastic portion is located above the rotation axis of the stop arm and can apply an elastic force to the upper end of the stop arm to rotate toward the direction of the clamping side, and the positioning portion is located below the rotation axis of the stop arm and can abut against the stop arm.

[0020] By adopting the above technical solution, since the elastic part is located above the rotation axis of the stop arm and can apply an elastic force to the upper end of the stop arm to rotate toward the direction of the clamping side, on the one hand, after the stop arm is released from the clamping fit with the limit arm, the stop arm can be restored to a position where it can be clamped and fitted with the limit arm under the action of the elastic part; on the other hand, when the stop arm is clamped and fitted with the limit arm, the elastic part can always apply an elastic force toward the clamping side to the stop arm to ensure the clamping stability of the stop arm and the limit arm; the positioning part is located below the rotation axis of the stop arm and can abut against the stop arm, and then the positioning part can limit the stop arm to avoid the stop arm from moving excessively under the action of the elastic part, which causes the limit arm to be unable to be clamped and fitted with the stop arm, thereby ensuring that the limit arm can be clamped and fitted with the stop arm, so that the support device can be recycled.

[0021] Optionally, the connecting beam is connected to the bottom beam, and one end of the bottom of the stop arm extends into the bottom beam. A driving vehicle is provided inside the bottom beam. When the driving vehicle moves in a first direction, the driving vehicle can drive the upper end of the stop arm to rotate in a direction away from the limit arm. Force ropes are provided at both ends of the driving vehicle, and through holes for the force ropes to pass through are provided at the bottom of both ends of the bottom beam.

[0022] By adopting the above technical solution, after the support device is installed between two adjacent H-shaped steels, the force rope located at one end in the first direction is pulled to make the driving vehicle move along the first direction under the action of the force rope. During the movement of the driving vehicle, it contacts the bottom end of the stop arm and drives the stop arm to rotate around its own rotation axis, so that the upper end of the stop arm rotates in the direction away from the limit arm, and finally the stop arm is released from the engagement with the limit arm, so as to realize driving the support rod from the storage position to the support position. During this process, the staff only needs to pull the force rope located in the first direction, thereby further reducing the difficulty of driving the support rod from the storage position to the support position, so as to further improve the safety of using the support device.

[0023] Optionally, the stop arm includes a main arm and a secondary arm hinged to the bottom of the main arm, the main arm can be engaged with the limit arm, the secondary arm extends into the bottom beam, and a rotation stop portion is provided on a side of the secondary arm close to the limit arm, so that when the driving vehicle moves in a second direction opposite to the first direction, the secondary arm can rotate relative to the main arm under the action of the driving vehicle; And / or, both ends of the bottom beam are rotatably connected to drag reduction wheels, the top projection of the drag reduction wheel is at least partially located in the through hole, and the force rope passes through the top of the drag reduction wheel and extends out of the bottom beam through the through hole.

[0024] By adopting the above technical solution, since a stopper is provided on the side of the auxiliary arm close to the limit arm, when the driving vehicle moves along the first direction, the auxiliary arm can drive the main arm to rotate under the action of the stopper, so that the upper end of the main arm rotates in the direction away from the limit arm, so that the stop arm is released from the engagement with the limit arm. When the driving vehicle moves along the second direction, the auxiliary arm can rotate relative to the main arm under the action of the driving vehicle, so that the driving vehicle can pass over the auxiliary arm and move to the other end of the bottom beam, so that the stop arm can be driven by the driving vehicle next time, thereby allowing the support device to be reused.

[0025] Since both ends of the bottom beam are rotatably connected to the drag reduction wheels, and the force rope passes through the top of the drag reduction wheel and extends out of the bottom beam through the through hole, the movement of the force rope is smoother when the staff pulls the force rope, so as to avoid the force rope from getting stuck. On the one hand, it reduces the difficulty of pulling the force rope, and on the other hand, it increases the efficiency of driving the support rod from the storage position to the support position, thereby ensuring the construction efficiency of the steel structure building.

[0026] Optionally, the connecting assembly includes a tightening seat and two threaded adjustment rods, wherein one end of one of the threaded adjustment rods is hinged to the bottom of the support frame, and the other end is hinged to the tightening seat, and one end of the other threaded adjustment rod is hinged to the top of the support frame, and the other end is hinged to the tightening seat; And / or, the tops of both ends of the support frame are provided with upwardly extending positioning seats, and the positioning seats can be pressed against the intersection of the web and wing plates of the H-shaped steel under the action of the connecting assembly.

[0027] By adopting the above technical solution, after the two ends of the support frame are extended into the two adjacent H-shaped steels, the adjusting tube of the threaded adjusting rod at the bottom is first rotated to make the two adjusting rods of the threaded adjusting rod move in directions away from each other, and finally the clamping seat is clamped against the intersection of the bottom wing plate and the web of the H-shaped steel. Then the adjusting tube of the threaded adjusting rod at the top is rotated, and the two adjusting rods of the threaded adjusting rod are also moved in directions away from each other, so that the entire support frame moves upward, and finally the positioning seat is abutted against the intersection of the top wing plate and the web of the H-shaped steel, and the installation of the support frame is completed. Through the setting of the threaded adjusting rod and the positioning seat, the contact points between the support frame and the H-shaped steel are increased, thereby increasing the fixing stability of the support frame to ensure the supporting effect of the steel truss floor deck.

[0028] The present application also discloses a method for installing a supporting device to improve the installation efficiency of the supporting device, thereby improving the construction efficiency of the steel structure building.

[0029] A method for installing a support device, which is used to install the support device as described above, comprises the following steps: S1. Positioning: Adjust the position of the guide column according to the thickness of the H-steel flange and the thickness of the wood so that when the support rod is in the supporting position, the top end surface of the wood placed on the bracket is flush with the top end surface of the H-steel top flange; S2. Hoisting: hoist the support device so that the support device moves upward and is finally positioned between two adjacent H-shaped steels above; S3. Adjust the support device so that the support device rotates around the plane so that both ends of the support device extend into the two H-shaped steels respectively; S4. Fix and adjust the connecting assembly so that the adjusting assembly moves away from the supporting frame, and finally the abutting seat abuts against the intersection of the bottom flange and the web of the H-beam, and the positioning seat abuts against the intersection of the top flange and the web of the H-beam; S5. Drive, pull the force rope so that the force rope drives the driving vehicle to move, so that the driving vehicle drives the stop arm, and the stop arm rotates around its own rotation axis to release the stop arm from the clamping fit with the limit arm. The support rod moves toward the supporting position under the action of the spring. After the support rod moves to the supporting position, the locking rod is opposite to the locking hole, and the locking rod extends into the locking hole under the action of the magnetic part.

[0030] By adopting the above technical solution and the above installation method, the installation efficiency of the supporting device is improved, thereby improving the construction efficiency of the steel structure building.

[0031] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The support device in the present application includes a support frame, a supporting assembly and a connecting assembly. The support frame includes a top beam, a bottom beam arranged parallel to the top beam, a connecting beam arranged between the top beam and the bottom beam, and a reinforcing beam arranged between the top beam and the bottom beam. The reinforcing beam is located on both sides of the connecting beam. The supporting assembly includes a supporting rod arranged on the connecting beam and a bracket arranged on the top of the supporting rod. The supporting rod can drive the bracket to move relative to the connecting beam along its own axial direction, so that the supporting rod has a storage position hidden inside the connecting beam and a supporting position capable of supporting the steel truss floor deck. The connecting assembly is arranged at the end of the support frame and is used to fix the end of the support frame to the H-shaped steel, avoiding the need to assemble the support device at the construction site, thereby greatly improving the construction efficiency of the steel structure building, and avoiding the need to set vertical support pipes on the ground or lower floor slab, thereby ensuring the passability of the staff.

[0032] 2. The supporting assembly in the present application also includes a guide column, a connecting beam is provided with multiple threaded holes along its axial direction, a waist-shaped groove is provided on the outer peripheral surface of the support rod, the length direction of the waist-shaped groove is parallel to the axial direction of the support rod, the guide column is threadedly connected to any threaded hole and extends into the waist-shaped groove, a locking rod is passed through the guide column, the groove wall of the waist-shaped groove is provided with a locking hole, and a magnetic part is provided in the locking hole. When the guide column contacts the bottom groove wall of the waist-shaped hole, the locking rod extends into the locking hole under the action of the magnetic attraction of the magnetic part, so as to utilize the cooperation between the guide column and the waist-shaped groove wall to limit the support position of the support rod, thereby increasing the flexibility of the support device, so that the support device can be suitable for various types of H-shaped steel and various thicknesses of wood.

[0033] 3. A limiting arm is provided at the bottom of the support rod in the present application, and a stop arm is provided in the connecting beam. When the support rod is in the storage position, the stop arm can be engaged with the limiting arm to limit the support rod in the storage position. The stop arm is hinged to the connecting beam so that the stop arm can be released from the engagement with the limiting arm by swinging. When the support rod is driven from the storage position toward the supporting position, the stop arm is first rotated, and then the stop arm is rotated around its own rotation axis to release the engagement with the stop arm and the limiting arm, and then the support rod is driven, and finally the support rod is moved from the storage position to the supporting position to complete driving the support rod to the supporting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a schematic structural diagram of the support device in one embodiment of the present application, mainly showing the relative position relationship between the support rod and the top beam when the support rod is in the storage position; Figure 2 This is a schematic structural diagram of the support device in one embodiment of the present application, mainly showing the relative position relationship between the support rod and the top beam when the support rod is in the supporting position; Figure 3 A cross-sectional view of the connecting beam and the supporting rod in one embodiment of the present application; Figure 4 for Figure 3 Enlarged view of part A in the middle; Figure 5 This is a cross-sectional view of the connecting beam and the bottom beam in one embodiment of the present application, mainly showing the state of the support rod when the limit arm and the stop arm are engaged with each other; Figure 6 for Figure 5 Enlarged view of part B in the middle; Figure 7 This is a cross-sectional view of the connecting beam and the bottom beam in one embodiment of the present application, mainly illustrating the cooperation relationship between the driving vehicle and the stop arm when the driving vehicle moves along the first direction; Figure 8 This is a cross-sectional view of the connecting beam and the bottom beam in one embodiment of the present application, mainly illustrating the relative positional relationship between the auxiliary arm and the main arm when the driving vehicle moves along the second direction; Figure 9 This is a schematic structural diagram of the stop arm in one embodiment of the present application; Figure 10 This is a flow chart of the installation method of the support device in this application.

[0035] Reference numerals: 1. Support frame; 11. Top beam; 111. Positioning seat; 12. Bottom beam; 121. Driving vehicle; 122. Force rope; 123. Driving block; 124. Through hole; 125. Drag reduction wheel; 13. Connecting beam; 131. Threaded hole; 132. Stop arm; 133. Main arm; 134. Auxiliary arm; 135. Anti-rotation part; 136. Spring; 137. Fixing ring; 138. Guide part; 139. Elastic part; 140. Positioning part; 14. Reinforcement beam; 2. Support assembly; 21. Support rod; 211. Waist-shaped groove; 212. Locking hole; 213. Magnetic part; 214. Limiting arm; 22. Bracket; 23. Guide column; 231. Locking rod; 232. Strip hole; 233. Positioning rod; 3. Connecting assembly; 31. Tightening seat; 32. Threaded adjustment rod; 4. H-shaped steel. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0037] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0038] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0039] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0041] Reference Figures 1 to 9 , discloses a support device for a steel truss floor deck, including a support frame 1, a supporting assembly 2 and a connecting assembly 3, wherein the support frame 1 includes a top beam 11, a bottom beam 12 arranged parallel to the top beam 11 and spaced apart, a connecting beam 13 arranged between the top beam 11 and the bottom beam 12, and a reinforcing beam 14 arranged between the top beam 11 and the bottom beam 12, and the reinforcing beam 14 is located on both sides of the connecting beam 13; the supporting assembly 2 includes a supporting rod 21 arranged on the connecting beam 13 and a bracket 22 arranged on the top of the supporting rod 21, the supporting rod 21 can drive the bracket 22 to move relative to the connecting beam 13 along its own axial direction, so that the supporting rod 21 has a storage position hidden inside the connecting beam 13 and a supporting position capable of supporting the steel truss floor deck; the connecting assembly 3 is provided at the end of the support frame 1 and is used to fix the end of the support frame 1 to the H-shaped steel 4.

[0042] It can be understood that there are multiple connecting beams 13 arranged in parallel at intervals, each connecting beam 13 is arranged perpendicular to the bottom beam 12 and the top beam 11, and one end of the connecting beam 13 is fixedly connected to the top beam 11, and the other end of the connecting beam 13 is fixedly connected to the bottom beam 12; reinforcing beams 14 are arranged on both sides of each connecting beam 13, and each reinforcing beam 14 is arranged at an angle, so that the reinforcing beams 14, the connecting beams 13, the top beam 11 and the bottom beam 12 together form a frame structure formed by multiple triangles; there are multiple groups of supporting components 2 corresponding to the connecting beams 13, and the support rods 21 of each group of supporting components 2 are arranged parallel to the corresponding connecting beams 13 and pass through the connecting beams 13 through the top beam 11; there are two groups of connecting components 3 and they are respectively located at both ends of the length direction of the supporting frame 1.

[0043] When using the supporting device in the present application to support a large-span steel truss floor deck, the supporting frame 1 is first lifted to make the supporting frame 1 rise and move between the two adjacent H-shaped steels 4 above, and then the position of the supporting frame 1 is adjusted to make the supporting frame 1 rotate in the plane, and then the two ends of the supporting frame 1 are respectively extended into the two H-shaped steels 4, and then the connecting component 3 is operated to fix the supporting frame 1 using the connecting component 3, so that the supporting frame 1 is fixedly connected to the two H-shaped steels 4, and then the support rod 21 is driven to move the support rod 21 from the storage position to the supporting position, and finally the wooden planks are placed on multiple brackets 22 so that the brackets 22 support the wooden planks, and the top end faces of the wooden planks are flush with the top end faces of the H-shaped steels 4, so that the wooden planks above the brackets 22 can contact the bottom of the steel truss floor deck to support the steel truss floor deck.

[0044] The design of the support device in this application avoids the need to assemble the support device at the construction site, thereby greatly improving the construction efficiency of the steel structure building and avoiding the need to set up vertical support pipes on the ground or lower floor, thereby ensuring the passability of staff.

[0045] Furthermore, the supporting frame 1 in the present application ensures the structural strength of the supporting frame 1 by providing the connecting beams 13 and the reinforcing beams 14, thereby ensuring the supporting effect of the supporting device on the steel truss floor deck.

[0046] In order to facilitate the lifting of the supporting device, the top beam 11, the bottom beam 12, the connecting beam 13 and the reinforcing beam 14 are all hollow inside, that is, the top beam 11, the bottom beam 12, the connecting beam 13 and the reinforcing beam 14 are all tubular structures to reduce the weight of the supporting frame 1, thereby achieving the effect of facilitating the lifting of the supporting device.

[0047] In a preferred embodiment, referring to Figure 2 and Figure 3 The supporting assembly 2 also includes a guide column 23, a plurality of threaded holes 131 are provided along the axial direction of the connecting beam 13, a waist-shaped groove 211 is provided on the outer peripheral surface of the supporting rod 21, and the length direction of the waist-shaped groove 211 is parallel to the axial direction of the supporting rod 21. The guide column 23 is threadedly connected to any threaded hole 131 and extends into the waist-shaped groove 211. A locking rod 231 is passed through the guide column 23, and a locking hole 212 is provided on the groove wall of the waist-shaped groove 211. A magnetic part 213 is provided in the locking hole 212. When the guide column 23 contacts the bottom groove wall of the waist-shaped hole, the locking rod 231 extends into the locking hole 212 under the magnetic attraction force of the magnetic part 213.

[0048] It is understandable that the guide column 23 is coaxially provided with a hole structure for the locking rod 231 to pass through, so that the locking rod 231 can pass through the guide column 23. The locking rod 231 is made of ferromagnetic material, such as iron.

[0049] Due to the different models of H-shaped steel 4, the thickness of the wing plate of the H-shaped steel 4 will be different, and due to the different thickness of the wooden planks at different construction sites, the support position of the support rod 21 needs to be adjusted according to the thickness of the wing plate of the H-shaped steel 4 and the thickness of the wooden planks. In this application, a guide column 23 is set so that when the support rod 21 is in the support device, the guide column 23 contacts the bottom groove wall of the waist-shaped groove 211, so as to utilize the cooperation between the guide column 23 and the groove wall of the waist-shaped groove 211 to limit the support position of the support rod 21, thereby increasing the flexibility of the support device and making the support device applicable to various models of H-shaped steel 4 and various thicknesses of wooden planks.

[0050] When adjusting the support position of the support rod 21 according to the thickness of the H-shaped steel 4 wing plate and the thickness of the wooden square, first rotate the guide column 23 to separate the guide column 23 from the threaded hole 131, and then align the guide column 23 with the threaded hole 131 of the required support position of the support rod 21, and then thread the guide column 23 and the threaded hole 131 together to complete the adjustment of the support position of the support rod 21.

[0051] When the support rod 21 moves to the supporting position, the guide column 23 contacts the bottom groove wall of the waist-shaped groove 211, and then the locking rod 231 is aligned with the locking hole 212. Then, the locking rod 231 extends into the locking hole 212 under the magnetic attraction of the magnetic part 213, so that the support rod 21 is limited to the supporting position by the plug-in cooperation between the locking rod 231 and the locking hole 212, thereby increasing the stability of the support rod 21 when it is in the supporting position, and thus greatly improving the stability of the support device when supporting the steel truss floor deck.

[0052] The present application does not make any specific limitation on the structure of the guide column 23. Preferably, refer to Figure 2 、 Figure 3 and Figure 4 The guide column 23 is formed by a bolt, and then when the guide column 23 is disassembled, it can be screwed with a wrench, thereby achieving the effect of facilitating the disassembly and assembly of the guide column 23. In other embodiments, the guide column 23 can also be other cylindrical structures.

[0053] Reference Figure 4In order to increase the connection stability between the locking rod 231 and the guide column 23, the locking rod 231 is provided with a strip hole 232 along its length, and the guide column 23 is provided with a positioning rod 233 passing through the strip hole 232. When the positioning rod 233 collides with the wall surface of the strip hole 232 near the end where the magnetic member 213 is located, the end of the locking rod 231 near the magnetic member 213 is flush with the guide column 23, so as to ensure that the locking rod 231 can extend into the locking hole 212 under the action of the magnetic member 213, and at the same time, it also avoids the possibility of the locking rod 231 being separated from the guide column 23, thereby increasing the connection stability between the locking rod 231 and the guide column 23.

[0054] Preferably, the magnetic member 213 is a magnet block disposed in the locking hole 212 to reduce the production cost of the supporting device.

[0055] In a preferred embodiment, referring to Figures 5 to 9 A limiting arm 214 is provided at the bottom of the supporting rod 21, and a stop arm 132 is provided in the connecting beam 13. When the supporting rod 21 is in the storage position, the stop arm 132 can be engaged with the limiting arm 214 to limit the supporting rod 21 in the storage position. The stop arm 132 is hinged to the connecting beam 13 so that the stop arm 132 can be released from the engagement with the limiting arm 214 by swinging.

[0056] When the support rod 21 is driven from the storage position toward the support position, the stop arm 132 is first rotated, and then the stop arm 132 is rotated around its own rotation axis to release the engagement between the stop arm 132 and the limit arm 214, and then the support rod 21 is driven, and finally the support rod 21 is moved from the storage position to the support position to complete driving the support rod 21 to the support position.

[0057] Further, refer to Figures 5 to 8 A spring 136 is provided in the connecting beam 13, and the spring 136 acts on the supporting rod 21. When the supporting rod 21 is in the storage position, the spring 136 is deformed and applies a force to the supporting rod 21 toward the supporting position.

[0058] It is understandable that the central axis of the spring 136 is arranged parallel to the supporting rod 21 , and the top end of the spring 136 abuts against the bottom of the supporting rod 21 .

[0059] After rotating the stop arm 132 so that the stop arm 132 rotates around its own rotation axis and releases the locking fit with the limit arm 214, the spring 136 gradually releases its elastic potential energy, and then the support rod 21 moves from the storage position toward the supporting position under the action of the spring 136, so that the support rod 21 automatically moves from the storage position to the supporting position. In this process, the need for staff to manually drive the support rod 21 is avoided, which on the one hand reduces the workload of staff and on the other hand increases the safety when using the support device.

[0060] Further, refer to Figure 6 The interior of the connecting beam 13 is provided with a fixing ring 137 located at the bottom of the spring 136, and one end of the bottom of the spring 136 contacts the fixing ring 137, so that the fixing ring 137 can support the spring 136 to increase the stability of the spring 136; and the fixing ring 137 through which one end of the bottom of the limiting arm 214 can pass, and the top of the fixing ring 137 is provided with an upwardly extending guide portion 138, which is located inside the spring 136, so that the guide portion 138 can limit the spring 136 to avoid relative sliding between the spring 136 and the fixing ring 137, which causes the limiting arm 214 to be unable to extend the fixing ring 137, thereby ensuring that the limiting arm 214 can normally extend the fixing ring 137 and engage with the stop arm 132.

[0061] The present application does not specifically limit the structure of the guide portion 138. Preferably, the guide portion 138 is a rib structure extending along the circumference of the fixing ring 137 to ensure the limiting effect on the spring 136. In other embodiments, the guide portion 138 can also be a sheet-like structure arranged at intervals along the circumference of the fixing ring 137.

[0062] Further, refer to Figure 6 The stop arm 132 has a clamping side that can be clamped with the limit arm 214 and a diverging side opposite to the clamping side. The interior of the connecting beam 13 is provided with an elastic portion 139 located on the diverging side and a positioning portion 140. The elastic portion 139 is located above the rotation axis of the stop arm 132 and can apply an elastic force to the upper end of the stop arm 132 to rotate toward the direction of the clamping side. The positioning portion 140 is located below the rotation axis of the stop arm 132 and can abut against the stop arm 132.

[0063] Since the elastic portion 139 is located above the rotation axis of the stop arm 132 and can apply an elastic force to the upper end of the stop arm 132 to rotate in the direction of the clamping side, on the one hand, after the stop arm 132 is released from the clamping fit with the limit arm 214, the stop arm 132 can be restored to a position where it can be clamped with the limit arm 214 under the action of the elastic portion 139. On the other hand, when the stop arm 132 is clamped with the limit arm 214, the elastic portion 139 can always apply an elastic force to the stop arm 132 in the direction of the clamping side. force to ensure the stability of the clamping connection between the stop arm 132 and the limit arm 214; the positioning portion 140 is located below the rotation axis of the stop arm 132 and can abut against the stop arm 132, so that the positioning portion 140 can limit the stop arm 132 to avoid the stop arm 132 from moving excessively under the action of the elastic portion 139, which causes the limit arm 214 to be unable to clamp and cooperate with the stop arm 132, thereby ensuring that the limit arm 214 can clamp and cooperate with the stop arm 132, so that the support device can be recycled.

[0064] The present application does not specifically limit the structures of the elastic portion 139 and the positioning portion 140. Preferably, the elastic portion 139 is a spring to ensure an elastic driving effect on the stop arm 132, and the positioning portion 140 is a columnar structure to ensure a limiting effect on the stop arm 132. In other embodiments, the elastic portion 139 may also be an elastic sheet, an elastic column, or other elastic structure, and the positioning portion 140 may also be a block-shaped structure.

[0065] Further, refer to Figures 5 to 9 The connecting beam 13 is connected to the bottom beam 12, and one end of the bottom of the stop arm 132 extends into the bottom beam 12. A driving vehicle 121 is provided inside the bottom beam 12. When the driving vehicle 121 moves along the first direction, the driving vehicle 121 can drive the upper end of the stop arm 132 to rotate in the direction away from the limit arm 214. Force ropes 122 are provided at both ends of the driving vehicle 121, and through holes 124 for the force ropes 122 to pass through are provided at the bottom of both ends of the bottom beam 12.

[0066] It is understandable that the driving vehicle 121 has wheels to reduce the movement resistance of the driving vehicle 121, thereby achieving the effect of facilitating driving of the driving vehicle 121.

[0067] After the support device is installed between two adjacent H-shaped steels 4, the force rope 122 located at one end of the first direction is pulled to make the driving vehicle 121 move along the first direction under the action of the force rope 122. During the movement of the driving vehicle 121, it contacts the bottom end of the stop arm 132 and drives the stop arm 132 to rotate the stop arm 132 around its own rotation axis, so that the upper end of the stop arm 132 rotates in the direction away from the limit arm 214, and finally the stop arm 132 is released from the engagement with the limit arm 214, so as to drive the support rod 21 from the storage position to the support position. In this process, the staff only needs to pull the force rope 122 located in the first direction, thereby further reducing the difficulty of driving the support rod 21 from the storage position to the support position, so as to further improve the safety of using the support device.

[0068] Better, refer to Figures 5 to 9 The top of the driving vehicle 121 has a driving block 123, which can reduce the time for the driving vehicle 121 and the stop arm 132 to interfere with each other, so that the stop arm 132 can be quickly reset.

[0069] Further, refer to Figures 5 to 9 The stop arm 132 includes a main arm 133 and a secondary arm 134 hinged to the bottom of the main arm 133. The main arm 133 can be engaged with the limit arm 214, and the main arm 133 is hinged to the connecting beam 13 through a hinge shaft. The secondary arm 134 extends into the bottom beam 12, and a stop portion 135 is provided on the side of the secondary arm 134 close to the limit arm 214, so that when the driving vehicle 121 moves in a second direction opposite to the first direction, the secondary arm 134 can rotate relative to the main arm 133 under the action of the driving vehicle 121.

[0070] Specifically, when the driving vehicle 121 moves in the first direction and contacts the auxiliary arm 134, the stop portion 135 contacts the main arm 133, so that the main arm 133 moves along with the auxiliary arm 134 under the action of the stop portion 135, and then the auxiliary arm 134 drives the main arm 133 to rotate, so that the upper end of the main arm 133 rotates in the direction away from the limit arm 214, so that the stop arm 132 is released from the engagement with the limit arm 214, and when the driving vehicle 121 moves in the second direction, the auxiliary arm 134 can rotate relative to the main arm 133 under the action of the driving vehicle 121, so that the driving vehicle 121 can pass over the auxiliary arm 134 and move to the other end of the bottom beam 12, so that the driving vehicle 121 can be used to drive the stop arm 132 next time, thereby allowing the support device to be reused.

[0071] The present application does not make any specific limitation on the structure of the anti-rotation portion 135 . Preferably, the anti-rotation portion 135 is a block-shaped structure to ensure the stopping cooperation effect between the anti-rotation portion 135 and the main arm 133 .

[0072] Further, refer to Figure 5 and Figure 8 Both ends of the bottom beam 12 are rotatably connected to the drag reduction wheels 125. The top projection of the drag reduction wheel 125 is at least partially located in the through hole 124. The force rope 122 passes through the top of the drag reduction wheel 125 and extends out of the bottom beam 12 through the through hole 124. Then, when the staff pulls the force rope 122, the movement of the force rope 122 is smoother to avoid the force rope 122 from getting stuck. On the one hand, it reduces the difficulty of pulling the force rope 122, and on the other hand, it increases the efficiency of driving the support rod 21 from the storage position to the support position, thereby ensuring the construction efficiency of the steel structure building.

[0073] In a preferred embodiment, referring to Figure 1 and Figure 2 The connecting assembly 3 includes a tightening seat 31 and two threaded adjustment rods 32, one end of one threaded adjustment rod 32 is hinged to the bottom of the support frame 1, and the other end is hinged to the tightening seat 31, and one end of the other threaded adjustment rod 32 is hinged to the top of the support frame 1, and the other end is hinged to the tightening seat 31.

[0074] It can be understood that the threaded adjustment rod 32 includes an adjustment tube and two adjustment rods respectively threadedly connected to the two ends of the adjustment rod. The threads on the two adjustment rods are opposite to each other, so that when the adjustment tube rotates clockwise, the two adjustment rods move toward each other, and when the adjustment tube rotates counterclockwise, the two adjustment rods move toward each other.

[0075] In a preferred embodiment, referring to Figure 2 The tops of both ends of the support frame 1 are provided with upwardly extending positioning seats 111, and the positioning seats 111 are provided at both ends of the top beam 11 in the length direction. The positioning seats 111 can be pressed against the intersection of the web and flange of the H-shaped steel 4 under the action of the connecting component 3.

[0076] Preferably, the length of the top beam 11 is greater than that of the bottom beam 12 , so that the positioning seat 111 can be pressed against the intersection of the web of the H-shaped steel 4 and the top flange under the action of the connecting assembly 3 .

[0077] After the two ends of the support frame 1 are extended into the two adjacent H-shaped steels 4, the adjusting tube of the threaded adjusting rod 32 at the bottom is first rotated to make the two adjusting rods of the threaded adjusting rod 32 move in directions away from each other, and finally the clamping seat 31 is clamped against the intersection of the bottom wing plate and the web of the H-shaped steel 4, and then the adjusting tube of the threaded adjusting rod 32 at the top is rotated, and the two adjusting rods of the threaded adjusting rod 32 are also moved in directions away from each other, so that the entire support frame 1 moves upward, and finally the positioning seat 111 is abutted against the intersection of the top wing plate and the web of the H-shaped steel 4, and the installation of the support frame 1 is completed. By setting the threaded adjusting rod 32 and the positioning seat 111, the contact points between the support frame 1 and the H-shaped steel 4 are increased, thereby increasing the fixing stability of the support frame 1 to ensure the supporting effect of the steel truss floor deck.

[0078] Reference Figure 10 The present application also discloses a method for installing a support device, which is used to install the support device as described above, and includes the following steps: S1. Positioning: Adjust the position of the guide column 23 according to the thickness of the H-shaped steel 4 wing plate and the thickness of the wooden square, so that when the support rod 21 is in the supporting position, the top end surface of the wooden square placed on the bracket 22 is flush with the top end surface of the top wing plate of the H-shaped steel 4, so that the wooden square placed on the bracket 22 can support the steel truss floor deck placed on the top of the H-shaped steel 4.

[0079] S2, hoisting, hoisting the support device to move the support device upward, and finally make the support device located between two adjacent H-shaped steels 4 above; when hoisting the support device, preferably a crane is used, of course, manual lifting can also be used.

[0080] S3. Adjustment: Adjust the support device so that the support device rotates around the plane so that the two ends of the support device extend into the two H-shaped steels 4 respectively; when adjusting the support device, you can use the rope pre-tightened to the support frame 1 or the rotation of the crane.

[0081] S4. Fix and adjust the connecting assembly 3 so that the adjusting assembly moves in the direction away from the supporting frame 1, and finally the abutting seat 31 abuts against the intersection of the bottom wing plate and the web of the H-shaped steel 4, and the positioning seat 111 abuts against the intersection of the top wing plate and the web of the H-shaped steel 4; that is, the adjusting tube of the threaded adjusting rod 32 is rotated so that the two adjusting rods of the threaded adjusting rod 32 move in the direction away from each other.

[0082] S5. Drive, pull the force rope 122 so that the force rope 122 drives the driving vehicle 121 to move, so that the driving vehicle 121 drives the stop arm 132, and the stop arm 132 rotates around its own rotation axis to release the stop arm 132 from the clamping fit with the limit arm 214. The support rod 21 moves toward the supporting position under the action of the spring 136. After the support rod 21 moves to the supporting position, the locking rod 231 is opposite to the locking hole 212, and the locking rod 231 extends into the locking hole 212 under the action of the magnetic part 213.

[0083] Finally, the wooden blocks are placed in the plurality of brackets 22 .

[0084] By adopting the above-mentioned installation method, the installation efficiency of the supporting device is improved, thereby improving the construction efficiency of the steel structure building.

[0085] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0086] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0087] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A support device for a steel truss floor deck, characterized in that: include: A support frame (1), the support frame (1) comprising a top beam (11), a bottom beam (12) arranged parallel to and spaced from the top beam (11), a connecting beam (13) arranged between the top beam (11) and the bottom beam (12), and a reinforcing beam (14) arranged between the top beam (11) and the bottom beam (12), the reinforcing beam (14) being located on both sides of the connecting beam (13); A supporting assembly (2), the supporting assembly (2) comprising a supporting rod (21) provided on the connecting beam (13) and a bracket (22) provided on the top of the supporting rod (21), the supporting rod (21) being capable of driving the bracket (22) to move relative to the connecting beam (13) along its own axial direction, so that the supporting rod (21) has a storage position hidden inside the connecting beam (13) and a supporting position capable of supporting the steel truss floor deck; A connecting assembly (3) is provided at an end of the supporting frame (1) and is used to fixedly connect the end of the supporting frame (1) to the H-shaped steel (4).

2. A support device for a steel truss floor deck according to claim 1, characterized in that: The supporting assembly (2) further includes a guide column (23), the connecting beam (13) is provided with a plurality of threaded holes (131) along its axial direction, the outer peripheral surface of the supporting rod (21) is provided with a waist-shaped groove (211), the length direction of the waist-shaped groove (211) is parallel to the axial direction of the supporting rod (21), the guide column (23) is threadedly connected to any of the threaded holes (131) and extends into the waist-shaped groove (211), a locking rod (231) is passed through the guide column (23), the groove wall of the waist-shaped groove (211) is provided with a locking hole (212), and a magnetic part (213) is provided in the locking hole (212), and when the guide column (23) contacts the bottom groove wall of the waist-shaped hole, the locking rod (231) extends into the locking hole (212) under the action of the magnetic attraction of the magnetic part (213).

3. A support device for a steel truss floor deck according to claim 1, characterized in that: A limiting arm (214) is provided at the bottom of the support rod (21), and a stop arm (132) is provided in the connecting beam (13). When the support rod (21) is in the storage position, the stop arm (132) can be engaged with the limiting arm (214) to limit the support rod (21) in the storage position. The stop arm (132) is hinged to the connecting beam (13) so that the stop arm (132) can release the engagement with the limiting arm (214) by swinging.

4. A support device for a steel truss floor deck according to claim 3, characterized in that: A spring (136) is provided in the connecting beam (13), and the spring (136) acts on the supporting rod (21). When the supporting rod (21) is in the storage position, the spring (136) is deformed and applies a force to the supporting rod (21) toward the supporting position.

5. A support device for a steel truss floor deck according to claim 4, characterized in that: A fixing ring (137) located at the bottom of the spring (136) is provided inside the connecting beam (13), one end of the bottom of the spring (136) contacts the fixing ring (137), and one end of the bottom of the limiting arm (214) can pass through the fixing ring (137), and an upwardly extending guide portion (138) is provided at the top of the fixing ring (137), and the guide portion (138) is located inside the spring (136).

6. A support device for a steel truss floor deck according to claim 3, characterized in that: The stop arm (132) has a clamping side capable of clamping with the limit arm (214) and a diverging side opposite to the clamping side. The interior of the connecting beam (13) is provided with an elastic portion (139) located on the diverging side and a positioning portion (140). The elastic portion (139) is located above the rotation axis of the stop arm (132) and can apply an elastic force to the upper end of the stop arm (132) to rotate toward the direction of the clamping side. The positioning portion (140) is located below the rotation axis of the stop arm (132) and can abut against the stop arm (132).

7. A support device for a steel truss floor deck according to claim 3, characterized in that: The connecting beam (13) is connected to the bottom beam (12), and one end of the bottom of the stop arm (132) extends into the bottom beam (12). A driving vehicle (121) is provided inside the bottom beam (12). When the driving vehicle (121) moves in a first direction, the driving vehicle (121) can drive the upper end of the stop arm (132) to rotate in a direction away from the limiting arm (214). Both ends of the driving vehicle (121) are provided with a force rope (122), and the bottoms of both ends of the bottom beam (12) are provided with through holes (124) for the force rope (122) to pass through.

8. A support device for a steel truss floor deck according to claim 7, characterized in that: The stop arm (132) includes a main arm (133) and a secondary arm (134) hinged to the bottom of the main arm (133); the main arm (133) can be engaged with the limiting arm (214); the secondary arm (134) extends into the bottom beam (12); and a rotation-stopping portion (135) is provided on a side of the secondary arm (134) close to the limiting arm (214), so that when the driving vehicle (121) moves in a second direction opposite to the first direction, the secondary arm (134) can rotate relative to the main arm (133) under the action of the driving vehicle (121); And / or, both ends of the bottom beam (12) are rotatably connected to a drag reduction wheel (125), a top view projection of the drag reduction wheel (125) is at least partially located in the through hole (124), and the force rope (122) passes through the top of the drag reduction wheel (125) and extends out of the bottom beam (12) through the through hole (124).

9. The support device for a steel truss floor deck according to claim 1, characterized in that: The connecting assembly (3) comprises a tightening seat (31) and two threaded adjustment rods (32), wherein one end of one of the threaded adjustment rods (32) is hinged to the bottom of the support frame (1), and the other end is hinged to the tightening seat (31); and one end of the other threaded adjustment rod (32) is hinged to the top of the support frame (1), and the other end is hinged to the tightening seat (31); And / or, the tops of both ends of the support frame (1) are provided with upwardly extending positioning seats (111), and the positioning seats (111) can be pressed against the intersection of the web and wing plates of the H-shaped steel (4) under the action of the connecting assembly (3).

10. A method for installing a support device, characterized in that: It is used to install the support device according to any one of claims 1 to 9, and comprises the following steps: S1. Positioning: adjusting the position of the guide column (23) according to the thickness of the wing plate of the H-shaped steel (4) and the thickness of the wood, so that when the support rod (21) is in the supporting position, the top end surface of the wood placed on the bracket (22) is flush with the top end surface of the top wing plate of the H-shaped steel (4); S2, hoisting, hoisting the support device so that the support device moves upward and finally the support device is located between two adjacent H-shaped steels (4) above; S3, adjusting, adjusting the support device so that the support device rotates around the plane so that the two ends of the support device extend into the two H-shaped steels (4) respectively; S4, fix and adjust the connecting assembly (3) so that the adjusting assembly moves in a direction away from the supporting frame (1), and finally the abutting seat (31) abuts against the intersection of the bottom wing plate and the web of the H-shaped steel (4), and the positioning seat (111) abuts against the intersection of the top wing plate and the web of the H-shaped steel (4); S5. Drive, pull the force rope (122) so that the force rope (122) drives the driving vehicle (121) to move, so that the driving vehicle (121) drives the stop arm (132), and the stop arm (132) rotates around its own rotation axis so that the stop arm (132) is released from the engagement with the limit arm (214), and the support rod (21) moves toward the supporting position under the action of the spring (136). After the support rod (21) moves to the supporting position, the locking rod (231) is opposite to the locking hole (212), and the locking rod (231) extends into the locking hole (212) under the action of the magnetic member (213).

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