Steel pipe truss assembly type prestressed concrete laminated slab

Abstract

The utility model discloses a steel pipe truss assembly type prestressed concrete laminated slab, and particularly relates to the technical field of building components, the steel pipe truss assembly type prestressed concrete laminated slab comprises a prefabricated slab, a truss is installed at the top end of the prefabricated slab, the truss comprises a steel pipe, adjusting assemblies are arranged on the steel pipe at intervals, and each adjusting assembly comprises a clamping groove, a lifting groove, a lifting piece and a limiting piece. The clamping grooves are formed in the side walls of the top end and the bottom end of the steel pipe, the lifting groove is formed in the steel pipe, and the two ends of the lifting groove are communicated with the two sets of clamping grooves in the steel pipe. When the lifting piece descends, the inclined buckle plate gradually inclines and is perpendicular, so that the attaching strength of the inner wall of the buckle groove and the hook end is improved, the hook is not prone to disengaging from the buckle groove in the buckle plate, and the situation that the hook disengages from the truss steel pipe, and consequently operation danger is increased is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of building components, in particular to a steel tube truss assembled prestressed concrete composite slab. Background Art

[0002] With the development of the construction industry, its prefabricated components have been widely used due to their convenience, among which steel tube truss composite plates are mainly used in the assembly of building floor slabs.

[0003] When installing the composite slab, it is usually lifted by hooking. During the lifting, the hook is hooked on the truss steel pipe. Since the lifting is a high-altitude operation, it will be shaken by the airflow and the lifting device during the lifting. Frequent shaking can easily cause the hook to separate from the truss steel pipe, resulting in uneven force on the hook on the truss steel pipe, which can easily cause the composite slab to tilt, etc., increasing the risk of the operation. Therefore, the utility model provides a steel tube truss assembled prestressed concrete composite slab to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a steel tube truss assembled prestressed concrete composite slab to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A steel tube truss assembled prestressed concrete composite panel, comprising a precast panel, a truss being installed at the top of the precast panel, the truss comprising a steel pipe, and adjustment components being arranged at intervals on the steel pipe, the adjustment component comprising a clamping slot, a lifting slot, a lifting member and a limiting member, the clamping slot being arranged on the top and bottom side walls of the steel pipe, the lifting slot being arranged inside the steel pipe, both ends of the lifting slot being communicated with two groups of clamping slots on the steel pipe, the lifting member being arranged inside the lifting slot, both ends of the lifting member extending into the clamping slots at both ends of the steel pipe, the limiting member being installed inside the lifting slot, the lifting member comprising a movable fastener and a bottom support plate, and the movable fastener and the bottom support plate being movably connected to each other, and the movable fastener comprising a clamping slot that can clamp the hook end.

[0007] As a further solution of the present invention, the movable fastener also includes a connecting plate, a snap plate, a telescopic part and a locking part. The bottom end of the connecting plate is movably mounted on the bottom support plate, the snap plate is arranged above the connecting plate, the telescopic part is installed between the connecting plate and the snap plate, the snap groove is opened on the side wall of the snap plate, and the locking part is installed on one side wall of the connecting plate.

[0008] As a further solution of the present invention, the telescopic part includes a telescopic slot and a telescopic plate. The telescopic slot is opened at the top of the connecting plate, and the telescopic plate is fixedly installed at the bottom position of the snap plate. The size of the telescopic plate is adapted to the inner diameter of the telescopic slot.

[0009] As a further solution of the present invention, the locking member includes a splint, an adjusting bolt and a clamping rod. The splint is arranged at the upper end position of the side wall of one side of the connecting plate, the adjusting bolt is installed on the splint, and the adjusting bolt passes through the corresponding position wall surface of the connecting plate and the splint near one end of the telescopic slot and extends to the inside of the telescopic slot. At least two groups of clamping rods are provided, and the two groups of clamping rods are located at the top and bottom of the adjusting bolt. The clamping rod is fixedly installed on the side wall of the splint near the connecting plate, and the clamping rod slides away from the splint end through the corresponding position wall surface of the connecting plate and is inserted on the inner wall of the connecting plate on the other side of the inner side of the telescopic slot.

[0010] As a further solution of the present invention, the locking member includes a slot and a threaded groove, the slots are arranged at intervals on the side wall of the telescopic plate, and one end of the slot passes through the side wall of the telescopic plate, the distance between two adjacent groups of slots is adapted to the distance between the two groups of clamping rods, the threaded groove is arranged on the side wall of the telescopic plate close to the adjusting bolt, and the threaded groove is located in the middle position of the two adjacent groups of slots, and the adjusting bolt is threadedly installed inside the threaded groove at one end close to the telescopic slot.

[0011] As a further solution of the present invention, the limit member includes a top limit plate, a bottom limit plate and an elastic adjustment member. The top limit plate is fixedly installed on the top position of the inner side wall of the lifting groove, the bottom limit plate is fixedly installed on the side wall of the bottom support plate, and the elastic adjustment member is installed between the top limit plate and the bottom limit plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. When the utility model is used, the upward squeezing of the hook during installation causes the lifting member to move upward in the lifting slot, thereby causing the movable fastener to rotate on the bottom support plate toward the side close to the hook end. Under the adjustment of the telescopic member, the snap groove on the snap plate is snapped onto the hook end. When the hook is about to detach from the truss steel pipe due to shaking, the lifting member is no longer squeezed by the downward movement of the hook, so that the lifting member drives the snap plate to descend. The descent of the lifting member causes the inclined snap plate to gradually tilt vertically, thereby increasing the fitting strength between the inner wall of the snap groove and the hook end, thereby making it difficult for the hook to detach from the snap groove on the snap plate, effectively avoiding the situation where the hook detaches from the truss steel pipe, thereby increasing the risk of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a steel tube truss assembled prestressed concrete composite slab.

[0015] Figure 2 A steel tube truss prestressed concrete composite slab Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0016] Figure 3 The diagram is a partial cross-sectional structural diagram of an adjustment component in a steel tube truss assembled prestressed concrete composite slab.

[0017] Figure 4 The diagram is a partial cross-sectional structural diagram of a movable fastener in a steel tube truss assembled prestressed concrete composite slab.

[0018] Figure 5 A steel tube truss prestressed concrete composite slab Figure 4 The enlarged structural diagram at B in FIG.

[0019] Figure 6 This is a schematic diagram of the arrangement of the existing steel mesh structure on the truss in Example 2 of a steel tube truss assembled prestressed concrete composite slab.

[0020] Figure 7 This is a schematic diagram of the steel mesh structure arrangement on the truss of the second embodiment of a steel tube truss assembled prestressed concrete composite slab.

[0021] In the figure: 1. Prefabricated plate; 2. Truss; 3. Slot; 4. Lifting slot; 5. Arc plate; 6. Top limit plate; 7. Connecting plate; 8. Snap plate; 9. Snap slot; 10. Bottom support plate; 11. Bottom limit plate; 12. Elastic adjustment piece; 13. Telescopic slot; 14. Telescopic plate; 15. Clamp; 16. Adjusting bolt; 17. Clamp rod; 18. Slot; 19. Threaded groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1:

[0024] See also Figures 1 to 5 In an embodiment of the present invention, a steel tube truss assembled prestressed concrete composite slab includes a precast slab 1, a truss 2 is installed on the top of the precast slab 1, and the truss 2 includes steel tubes, and adjustment components are arranged at intervals on the steel tubes.

[0025] The adjustment component includes a card slot 3, a lifting slot 4, a lifting piece and a limit piece. The card slot 3 is opened on the top and bottom side walls of the steel pipe, and the lifting slot 4 is opened inside the steel pipe. Both ends of the lifting slot 4 are interconnected with the two groups of card slots 3 on the steel pipe. The lifting piece is arranged inside the lifting slot 4, and both ends of the lifting piece extend into the card slots 3 at both ends of the steel pipe. The lifting piece can be lifted and lowered inside the lifting slot 4. The limit piece is installed inside the lifting slot 4, and the lifting adjustment of the lifting piece is limited by the limit piece.

[0026] Specifically, when the lifting hook is hooked on the corresponding adjustment component position on the steel pipe, the upward lifting force from the inner side of the hook causes the lifting member to rise inside the lifting slot 4. When the hook is detached, the lifting member is affected by gravity to descend and reset.

[0027] The lifting part includes a movable fastener and a bottom support plate 10. The movable fastener is arranged on a group of slots 3 at the top, and the bottom end of the movable fastener extends to the inside of the lifting slot 4. The bottom support plate 10 is arranged on a group of slots 3 at the bottom, and the top end of the bottom support plate 10 extends to the inside of the lifting slot 4. The movable fastener and the bottom support plate 10 are movably connected to each other, and the movable fastener can be rotated and adjusted on the bottom support plate 10.

[0028] Furthermore, the connection position between the movable fastener and the bottom support plate 10 is located below the limit member. When the lifting member does not rise, the movable fastener cannot be rotated and adjusted on the bottom support plate 10. When the lifting member rises, the connection position between the movable fastener and the bottom support plate 10 moves to a position above the limit member. At this time, the movable fastener can be rotated and adjusted on the bottom support plate 10.

[0029] The movable fastener and the bottom supporting plate 10 are both installed with an arc plate 5 at one end away from each other. The arc plate 5 is an arc plate adapted to the curvature of the steel pipe.

[0030] The movable fastener includes a connecting plate 7, a snap plate 8, a snap groove 9, a telescopic piece and a locking piece. The bottom end of the connecting plate 7 is movably mounted on the bottom support plate 10. The connecting plate 7 can be rotated and adjusted on the bottom support plate 10. The snap plate 8 is arranged above the connecting plate 7. The telescopic piece is installed between the connecting plate 7 and the snap plate 8. The snap plate 8 can be telescopically adjusted on the connecting plate 7 through the telescopic piece. The snap groove 9 is opened on the side wall of the snap plate 8. The locking piece is installed on the side wall of one side of the connecting plate 7. The telescopic adjustment of the telescopic piece is locked by the locking piece.

[0031] When the hook is hooked in the corresponding adjustment component position on the steel pipe and the lifting member is lifted up by the upward force of the hook, the movable fastener is rotated on the bottom support plate 10 to the position close to the hook end. At this time, by adjusting the telescopic member, the snap plate 8 drives the snap groove 9 to adjust to the appropriate position until the snap groove 9 on the snap plate 8 is snapped on the hook end. Therefore, during lifting and transportation, when the hook is about to be detached due to external airflow and shaking caused by movement of the equipment, the hook will move downward on the steel pipe and the lifting member will descend inside the lifting groove 4. At this time, the angle of the snap groove 9 on the snap plate 8 to the hook snap changes gradually as the lifting member descends, that is, the descent of the lifting member will cause the inclined snap plate 8 to gradually tilt vertically, thereby increasing the fit strength between the inner wall of the snap groove 9 and the hook end, thereby making it difficult for the hook to be detached from the snap groove 9 on the snap plate 8.

[0032] The limit member includes a top limit plate 6, a bottom limit plate 11 and an elastic adjustment member 12. The top limit plate 6 is fixedly mounted on the top position of the inner side wall of the lifting groove 4, the bottom limit plate 11 is fixedly mounted on the side wall of the bottom support plate 10, and the elastic adjustment member 12 is installed between the top limit plate 6 and the bottom limit plate 11. The elastic adjustment member 12 enables the top limit plate 6 and the bottom limit plate 11 to be quickly reset, that is, the lifting member can be quickly reset and adjusted when the force changes.

[0033] Furthermore, the connection position between the movable fastener and the bottom supporting plate 10 is located between the top limit plate 6 and the bottom limit plate 11 .

[0034] The telescopic member includes a telescopic slot 13 and a telescopic plate 14 . The telescopic slot 13 is opened at the top of the connecting plate 7 . The telescopic plate 14 is fixedly mounted on the bottom of the snap plate 8 . The size of the telescopic plate 14 matches the inner diameter of the telescopic slot 13 .

[0035] The locking member includes a clamping plate 15, an adjusting bolt 16, a clamping rod 17, a slot 18 and a threaded groove 19. The clamping plate 15 is arranged at the upper end position of the side wall of one side of the connecting plate 7, and the adjusting bolt 16 is installed on the clamping plate 15, and the adjusting bolt 16 passes through the corresponding position wall surface of the connecting plate 7 and the clamping plate 15 at one end close to the telescopic groove 13 and extends to the inside of the telescopic groove 13. There are at least two groups of clamping rods 17, and the two groups of clamping rods 17 are located at the top and bottom of the adjusting bolt 16. The clamping rod 17 is fixedly mounted on the side wall of the clamping plate 15 close to the connecting plate 7, and the clamping rod 17 slides through the corresponding position wall surface of the connecting plate 7 away from the end of the clamping plate 15. The surface is inserted into the inner side wall of the connecting plate 7 on the other side of the inner side of the telescopic groove 13, and the slots 18 are spaced apart on the side wall of the telescopic plate 14, and one end of the slot 18 passes through the side wall of the telescopic plate 14. The number of slots 18 is more than the number of card rods 17. The distance between two adjacent groups of slots 18 is adapted to the distance between the two groups of card rods 17. The card rod 17 can be inserted into the interior of the slot 18. The threaded groove 19 is provided on the side wall of the telescopic plate 14 near the adjusting bolt 16, and the threaded groove 19 is located in the middle of the two adjacent groups of slots 18. The adjusting bolt 16 is threadedly installed in the interior of the threaded groove 19 at one end near the telescopic groove 13.

[0036] By screwing the adjusting bolt 16, the adjusting bolt 16 is disengaged from the thread groove 19. At this time, the splint 15 can be moved, and then the clamping rod 17 can be driven by the splint 15 to move out of the slot 18. After the telescopic plate 14 is adjusted to the corresponding position in the telescopic slot 13, the splint 15 is reinstalled so that the two sets of clamping rods 17 on the splint 15 are inserted into the slots 18 at the corresponding positions on the telescopic plate 14. The adjusting bolt 16 is screwed again so that the adjusting bolt 16 is threadedly installed on the telescopic plate 14 through the thread groove 19, thereby completing the telescopic adjustment and locking the telescopic adjustment.

[0037] Example 2:

[0038] Based on Example 1:

[0039] like Figure 6 As shown, the existing truss 2 is arranged with a steel mesh: the transverse reinforcement is placed on the truss 2, the longitudinal reinforcement is placed on the transverse reinforcement, and the transverse reinforcement and the longitudinal reinforcement are connected to each other through stirrups.

[0040] like Figure 7 As shown, in this solution: when arranging steel bars on the truss 2, the first layer of transverse bars is placed in the grooves 3 on the steel pipe, and then the longitudinal bars are placed on the first layer of transverse bars, and finally the second layer of transverse bars is placed on the longitudinal bars, and the transverse and longitudinal bars are connected to each other by stirrups. More specifically, the spacing between two adjacent groups of transverse bars in the first layer is twice the spacing between two adjacent groups of longitudinal bars, and the spacing between two adjacent groups of transverse bars in the second layer is also twice the spacing between two adjacent groups of longitudinal bars. The horizontal spacing between the first layer of transverse bars and the corresponding second layer of transverse bars is the same as the spacing between two adjacent groups of longitudinal bars.

[0041] Arranging the steel mesh using this method does not increase the thickness of the formed floor slab. At the same time, the interlacing of two layers of transverse reinforcement creates a three-dimensional truss effect of "upper and lower layers of transverse reinforcement + middle longitudinal reinforcement." The horizontal stiffness is more evenly distributed in the height direction (thickness direction). This is especially true for thin plates (such as floor slabs) because it can reduce the asymmetric cross-sectional stiffness caused by the offset of a single layer of reinforcement (traditional single-layer transverse reinforcement is close to the protective layer, and the reinforcement contribution near the neutral axis is small).

[0042] Two layers of transverse reinforcement, located in the upper and lower regions of the cross-section (the first layer near the bottom cover, the third near the top cover), simultaneously restrain shrinkage and deformation on both the upper and lower concrete surfaces, suppressing the formation of through-cracks. For example, when the bottom surface of the slab is subjected to tension, the bottom layer of transverse reinforcement resists cracking; when the top surface contracts due to temperature fluctuations, the top layer of transverse reinforcement provides restraint, achieving a superior effect to a single layer of transverse reinforcement that only controls cracking on one side.

[0043] The working principle of this utility model is:

[0044] When the present invention is used, the lifting hook is buckled on the adjustment component at the corresponding position, that is, the hook is buckled on the bottom card slot 3, so that the bottom end of the hook acts on the lifting member, driving the lifting member to rise inside the lifting slot 4. At this time, by rotating the movable fastener, the movable fastener is adjusted to the side close to the hook end, and then by adjusting the telescopic member, the telescopic member drives the card slot 9 to be adjusted to the appropriate position through the card plate 8 until the card slot 9 is buckled on the hook end, thereby completing the hook buckle, and the composite plate is hoisted to the specified position by the lifting device, thereby completing the installation operation.

[0045] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel tube truss assembled prestressed concrete composite slab, comprising a precast slab (1), a truss (2) being mounted on the top of the precast slab (1), the truss (2) comprising a steel tube, and adjustment components being arranged at intervals on the steel tube, characterized in that: The adjustment assembly includes a card slot (3), a lifting slot (4), a lifting member and a limit member, the card slot (3) is opened on the top and bottom side walls of the steel pipe, the lifting slot (4) is opened inside the steel pipe, both ends of the lifting slot (4) are connected to the two groups of card slots (3) on the steel pipe, the lifting member is arranged inside the lifting slot (4), both ends of the lifting member extend into the card slots (3) at both ends of the steel pipe, the limit member is installed inside the lifting slot (4), the lifting member includes a movable fastener and a bottom support plate (10), and the movable fastener and the bottom support plate (10) are movably connected to each other, and the movable fastener includes a buckle slot (9) that can buckle the hook end.

2. The steel tube truss assembled prestressed concrete composite slab according to claim 1, characterized in that: The movable fastener further comprises a connecting plate (7), a snap plate (8), a telescopic member and a locking member, wherein the bottom end of the connecting plate (7) is movably mounted on the bottom support plate (10), the snap plate (8) is arranged above the connecting plate (7), the telescopic member is mounted between the connecting plate (7) and the snap plate (8), the snap groove (9) is provided on the side wall of the snap plate (8), and the locking member is mounted on one side wall of the connecting plate (7).

3. The steel tube truss assembled prestressed concrete composite slab according to claim 2, characterized in that: The telescopic member comprises a telescopic slot (13) and a telescopic plate (14), wherein the telescopic slot (13) is provided at the top end of the connecting plate (7), and the telescopic plate (14) is fixedly mounted at the bottom end of the snap plate (8), and the size of the telescopic plate (14) is adapted to the inner diameter of the telescopic slot (13).

4. The steel tube truss assembled prestressed concrete composite slab according to claim 3, characterized in that: The locking member comprises a clamping plate (15), an adjusting bolt (16) and a clamping rod (17), wherein the clamping plate (15) is arranged at an upper end position of a side wall of one side of the connecting plate (7), the adjusting bolt (16) is mounted on the clamping plate (15), and the adjusting bolt (16) is close to the telescopic groove (13) and passes through the wall surface of the corresponding position of the connecting plate (7) and the clamping plate (15) and extends into the interior of the telescopic groove (13), and the clamping rod (17) is provided with at least two groups, and the two groups of clamping rods (17) are located at the top and bottom of the adjusting bolt (16), and the clamping rod (17) is fixedly mounted on the side wall of the clamping plate (15) close to the connecting plate (7), and the clamping rod (17) is away from the clamping plate (15) and slides through the wall surface of the corresponding position of the connecting plate (7) and is inserted into the inner wall of the connecting plate (7) on the other side of the inner side of the telescopic groove (13).

5. The steel tube truss assembled prestressed concrete composite slab according to claim 4, characterized in that: The locking member includes a slot (18) and a threaded groove (19), wherein the slots (18) are arranged at intervals on the side wall of the telescopic plate (14), and one end of the slot (18) passes through the side wall of the telescopic plate (14), and the distance between two adjacent groups of slots (18) is adapted to the distance between the two groups of clamping rods (17), and the threaded groove (19) is arranged on the side wall of the telescopic plate (14) near the adjusting bolt (16), and the threaded groove (19) is located in the middle of the two adjacent groups of slots (18), and the adjusting bolt (16) is threadedly installed in the interior of the threaded groove (19) at one end near the telescopic groove (13).

6. The steel tube truss assembled prestressed concrete composite slab according to claim 2, characterized in that: The limiting member comprises a top limiting plate (6), a bottom limiting plate (11) and an elastic adjusting member (12), wherein the top limiting plate (6) is fixedly mounted on the top position of the inner side wall of the lifting groove (4), the bottom limiting plate (11) is fixedly mounted on the side wall of the bottom supporting plate (10), and the elastic adjusting member (12) is mounted between the top limiting plate (6) and the bottom limiting plate (11).

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