Construction method of removable bottom formwork steel bar truss floor deck

Abstract

The present invention relates to the field of building construction, and specifically to a construction method for a detachable bottom formwork steel truss floor deck. A quick-release lock connector and a quick-release lock structure are designed for rapid installation or separation between a steel truss and a detachable bottom formwork. When in use, an automatic telescopic locking mechanism is used between a push rod and a push rod in the quick-release lock, so that when the push rod is dragged upward, the push rod is lifted and rotated at the same time, thereby realizing rapid locking or separation of the detachable bottom formwork and the quick-release lock connector. The invention has a wide range of applications, is convenient for construction, shortens the construction period, and reduces construction costs.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a construction method of a detachable bottom formwork steel bar truss floor deck. Background Art

[0002] Compared with traditional steel truss floor decking, the removable bottom mode steel truss floor decking solves the problems of decoration without suspended ceiling, deformation of the bottom formwork of the floor decking, and easy damage of the floor decking during transportation. Therefore, it has gradually become popular in construction; however, in the existing removable bottom mode steel truss floor decking, the bottom formwork and the steel truss are fixed with bolts, resulting in the need for workers to tighten the fixing bolts one by one to complete the installation or removal work during the actual installation and removal of the bottom formwork. The workload is large, which greatly affects the construction progress and increases the construction cost. Summary of the invention

[0003] In view of the above problems, an embodiment of the present invention provides a construction method for a detachable bottom formwork steel bar truss floor deck.

[0004] An embodiment of the present invention provides a construction method for a detachable bottom formwork steel bar truss floor deck, comprising:

[0005] Determine the reinforcement specifications and the thickness of the removable bottom formwork in the steel truss;

[0006] A quick-release lock connector is manufactured according to the reinforcement specifications. The quick-release lock connector includes a curved notch and a U-shaped notch arranged at the top for fixing the steel bar truss, a connector lock opening is opened at the bottom, and a connector lock card is arranged at the bottom of the inner side of the connector lock opening;

[0007] A quick-release lock is manufactured according to the specifications of the quick-release lock connector and the thickness of the detachable bottom mold. The quick-release lock includes a cylindrical shell with an open top surface, a shell notch is provided on the bottom surface of the shell, a push rod is passed through the shell notch, a shell stabilizing plate is provided at the open end of the shell, a through hole is provided on the shell stabilizing plate opposite to the shell notch, a push rod is passed through the through hole, the push rod and the inner ends of the push rod placed in the shell are connected by an automatic telescopic locking mechanism, and a push rod locking card adapted to the connector locking card is provided on the top side of the push rod;

[0008] Insert the lower chord steel bar on one side of the steel truss into the curved notch from the side, and press the lower chord steel bar on the other side into the U-shaped notch to complete the clamping and fixing;

[0009] Lay the steel trusses that have been fixed by clamping on the removable bottom formwork, and align the locks of the connectors with the plate holes pre-opened on the removable bottom formwork during the laying process;

[0010] Insert the quick-release lock through the plate hole into the lock port of the connector from the bottom of the detachable bottom mold. During the insertion process, the outer shell stabilizing plate fits the detachable bottom mold, push the push rod upward, and then drive the push rod upward through the automatic telescopic locking mechanism. The push rod lock card passes through the gap between the lock cards of the connector. After pushing it into place, release the push rod. The push rod is reset downward under the action of the automatic telescopic locking mechanism. At the same time, during the reset process, the push rod rotates under the action of the automatic telescopic locking mechanism. Finally, the push rod lock card is locked on the connector lock card to complete the locking and fixing, so that the steel truss is fixed to the detachable bottom mold;

[0011] The floor decking is constructed using fixed steel trusses and removable bottom formwork according to conventional procedures.

[0012] Compared with the prior art, the beneficial effect of the present invention is that the automatic telescopic locking mechanism between the push rod and the push rod enables the push rod to be lifted and rotated at the same time when the push rod is dragged upward, thereby realizing the rapid locking or separation of the detachable bottom mold and the quick-release lock connector. It has a wide range of applications, is easy to construct, shortens the construction period, and reduces construction costs.

[0013] Optionally, the automatic telescopic locking mechanism includes a spring, a push rod transmission rod, a push rod transmission rod and a locking ridge arranged on the inner wall of the shell and axially extending from the shell, the push rod transmission rod is coaxially connected with the push rod, the spring is sleeved on the push rod and the two ends are respectively against the shell stabilizing plate and the push rod transmission rod, and the push rod transmission rod is coaxially connected with the push rod; a push rod locking groove and a push rod unlocking groove are arranged at intervals on the circumference of the push rod transmission rod, an inner side surface of the push rod locking groove is arc-shaped, and a transition arc section is arranged from the notch on the side of the push rod locking groove away from the arc-shaped inner side surface to the middle of the push rod unlocking groove, and the push rod unlocking groove is adapted to the locking ridge; a push rod linkage groove and a push rod sliding groove are arranged at intervals on the circumference of the push rod transmission rod, the push rod linkage groove is adapted to the transition arc section and one side is connected to the middle of the push rod sliding groove, and the push rod sliding groove maintains sliding cooperation with the locking ridge;

[0014] When the lock is unlocked, the push rod transmission rod is pushed upward through the push rod, and the push rod linkage groove in the push rod transmission rod contacts the transition arc section to lift the push rod transmission rod upward and compress the spring. When the push rod unlocking groove disengages from the lock ridge upward, the push rod transmission rod rotates once under the cooperation of the push rod linkage groove and the transition arc section, and the push rod unlocking groove passes over the lock ridge in the circumferential direction. Thereafter, the push rod is released, and the push rod transmission rod resets downward under the action of the spring. During the resetting process, the arc-shaped inner side surface in the locking groove of the push rod contacts the top of the lock ridge, thereby sliding and fitting, causing the push rod transmission rod to rotate a second time. When the top of the lock ridge slides to the bottom of the locking groove of the push rod, the push rod lock card is locked on the connecting piece lock card to complete the locking.

[0015] Optionally, when the quick-release lock needs to be removed after the construction of the floor deck is completed, the push rod transmission rod is pushed upward again by the push rod, and the push rod linkage groove in the push rod transmission rod contacts the arc-shaped inner side surface in the top rod locking groove to lift the top rod transmission rod upward. When the top rod locking groove disengages upward from the lock ridge, the top rod transmission rod rotates once under the cooperation of the push rod linkage groove and the arc-shaped inner side surface, and the top rod locking groove passes over the lock ridge in the circumferential direction. Thereafter, the push rod is released, and the top rod transmission rod resets downward under the action of the spring. During the resetting process, the transition arc section contacts the top end of the lock ridge, thereby sliding and fitting, causing the top rod transmission rod to rotate a second time, and the lock ridge slides into the top rod unlocking groove. At the same time, the top rod lock card is disengaged from the connecting piece lock card to complete the unlocking.

[0016] Optionally, a push rod alignment column is coaxially arranged at the inner end of the push rod transmission rod, the push rod transmission rod is a hollow structure with an open inner end, and the lower part of the push rod alignment column is inserted into the push rod transmission rod.

[0017] Optionally, the bottom end of the push rod transmission rod is connected to the push rod through a push rod stabilizing column, and a push rod limiting plate is provided at the bottom end of the push rod stabilizing column.

[0018] Optionally, the push rod sliding slot and the push rod unlocking slot have the same width.

[0019] Optionally, the cross-sections of the connector lock and the ejector rod lock are both fan-shaped.

[0020] Optionally, the top end of the locking rib is an arc surface that matches the transition arc segment.

[0021] Optionally, a threaded connection is adopted between the push rod transmission rod and the push rod, and a threaded connection is adopted between the shell and the shell stabilizing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute a limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of a locking state of a steel bar truss and a detachable bottom form provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of a quick-release lock provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a top rod provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a push rod transmission rod portion provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a matching structure of a push rod transmission rod and a push rod transmission rod provided in an embodiment of the present invention Figure 1 ;

[0028] Figure 6 A schematic diagram of a matching structure of a push rod transmission rod and a push rod transmission rod provided in an embodiment of the present invention Figure 2 ;

[0029] Figure 7 A schematic diagram of the main structure of a quick-release lock connector provided by an embodiment of the present invention;

[0030] Figure 8 A schematic bottom view of the structure of a quick-release lock connector provided by an embodiment of the present invention.

[0031] Among them, 1. steel truss; 2. detachable bottom mold; 3. quick-release lock connector; 4. bend notch; 5. U-shaped notch; 6. connector lock mouth; 7. connector lock card; 8. quick-release lock; 9. shell; 10. shell notch; 11. push rod; 12. shell stabilizer; 13. push rod; 14. automatic telescopic locking mechanism; 15. push rod lock card; 16. lower chord steel bar; 17. plate hole; 18. spring; 19. push rod transmission rod; 20. push rod transmission rod; 21. lock rib; 22. push rod locking groove; 23. push rod unlocking groove; 24. arc-shaped inner side; 25. transition arc section; 26. push rod linkage groove; 27. push rod sliding groove; 28. push rod alignment column; 29. ​​push rod stabilizing column; 30. push rod limit plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0033] See also Figure 1-Figure 8 The embodiment of the present invention provides a construction method of a detachable bottom formwork steel bar truss floor deck, comprising:

[0034] Determine the specifications of the reinforcement in the steel truss 1 and the thickness of the removable bottom form 2;

[0035] A quick-release lock connector 3 is manufactured according to the reinforcement specification. The quick-release lock connector 3 includes a curved notch 4 and a U-shaped notch 5 arranged at the top for fixing the steel bar truss 1, a connector lock opening 6 is opened at the bottom, and a connector lock card 7 is arranged at the bottom of the inner side of the connector lock opening 6;

[0036] A quick-release lock 8 is manufactured according to the specifications of the quick-release lock connector 3 and the thickness of the removable bottom mold 2. The quick-release lock 8 includes a cylindrical shell 9 with an open top surface, a shell notch 10 is provided on the bottom surface of the shell 9, a push rod 11 is penetrated in the shell notch 10, a shell stabilizing sheet 12 is provided at the open end of the shell 9, a through hole is provided on the shell stabilizing sheet 12 opposite to the shell notch 10, a push rod 13 is penetrated in the through hole, the push rod 11 and the push rod 13 are placed in the inner ends of the shell 9 and connected by an automatic telescopic locking mechanism 14, and a push rod locking card 15 adapted to the connector locking card 7 is provided on the top side of the push rod 13;

[0037] The lower chord steel bar 16 on one side of the steel truss 1 is inserted into the curved notch 4 from the side, and the lower chord steel bar 16 on the other side is pressed into the U-shaped notch 5 to complete the clamping and fixing;

[0038] The steel bar truss 1 that has been fixed by clamping is laid on the removable bottom form 2. During the laying process, the locking opening 6 of the connecting piece is aligned with the plate hole 17 pre-opened on the removable bottom form 2;

[0039] The quick-release lock 8 is inserted into the connector lock 6 through the plate hole 17 from the bottom of the detachable bottom mold 2. During the insertion process, the outer shell stabilizing sheet 12 fits with the detachable bottom mold 2, and the push rod 11 is pushed upward, and then the push rod 13 is driven upward through the automatic telescopic locking mechanism 14. The push rod lock card 15 passes through the gap between the connector lock cards 7. After being pushed into place, the push rod 11 is released, and the push rod 13 is reset downward under the action of the automatic telescopic locking mechanism 14. At the same time, during the reset process, the push rod 13 rotates under the action of the automatic telescopic locking mechanism 14. Finally, the push rod lock card 15 is clamped on the connector lock card 7 to complete the locking and fixing, thereby fixing the steel truss 1 to the detachable bottom mold 2;

[0040] The fixed steel bar truss 1 and the removable bottom form 2 are used to construct the floor deck according to conventional procedures, such as setting a support frame under the removable bottom form 2 and pouring concrete on the removable bottom form 2.

[0041] In practice, the automatic telescopic locking mechanism 14 includes a spring 18, a push rod transmission rod 19, a push rod transmission rod 20, and a lock rib 21 arranged on the inner wall of the shell 9 and extending along the axial direction of the shell 9. The push rod transmission rod 19 is coaxially connected to the push rod 13. The spring 18 is sleeved on the push rod 13 and its two ends are respectively against the shell stabilizing plate 12 and the push rod transmission rod 19. The push rod transmission rod 20 is coaxially connected to the push rod 11. The circumferential surface of the push rod transmission rod 19 is provided with a push rod locking groove 22 and a push rod unlocking groove 23 at intervals. An inner side surface of the push rod locking groove 22 is in an arc shape, and a transition arc section 25 is provided from the notch of the push rod locking groove 22 away from the arc-shaped inner side surface 24 to the middle of the push rod unlocking groove 23, and the push rod unlocking groove 23 is adapted to the lock rib 21; a push rod linkage groove 26 and a push rod sliding groove 27 are provided at intervals on the circumference of the push rod transmission rod 20, and the push rod linkage groove 26 is adapted to the transition arc section 25 and one side is connected to the middle of the push rod sliding groove 27, and the push rod sliding groove 27 maintains sliding cooperation with the lock rib 21;

[0042] When the push rod 11 is in the unused state, the upper part of the lock rib 21 is inserted into the ejector rod unlocking groove 23. When the quick release lock 8 is used for locking, the push rod transmission rod 20 is pushed upward by the push rod 11. The push rod linkage groove 26 in the push rod transmission rod 20 contacts the transition arc segment 25 to lift the ejector rod 19 upward and compress the spring 18. When the ejector rod unlocking groove 23 is disengaged from the lock rib 21 upward, the ejector rod transmission rod 19 rotates once under the cooperation of the push rod linkage groove 26 and the transition arc segment 25, and the ejector rod unlocking groove 23 passes over the lock rib 21 in the circumferential direction. Thereafter, the push rod 11 is released, and the ejector rod transmission rod 19 resets downward under the action of the spring 18. During the resetting process, the arc-shaped inner side surface 24 in the ejector rod locking groove 22 contacts the top end of the lock rib 21, thereby sliding and cooperating, causing the ejector rod transmission rod 19 to rotate twice. When the top end of the lock rib 21 slides to the bottom of the ejector rod locking groove 22, the ejector rod locking card 15 is clamped on the connector lock card 7 to complete the locking.

[0043] During implementation, when the quick-release lock 8 needs to be removed after the construction of the floor deck is completed, the push rod transmission rod 20 is pushed upward again by the push rod 11, and the push rod linkage groove 26 in the push rod transmission rod 20 contacts the arc-shaped inner side surface 24 in the push rod locking groove 22 to push up the push rod transmission rod 19. When the push rod locking groove 22 disengages from the lock rib 21 upward, the push rod transmission rod 19 rotates once under the cooperation of the push rod linkage groove 26 and the arc-shaped inner side surface 24, and the push rod locking groove 22 passes over the lock rib 21 in the circumferential direction. Thereafter, the push rod 11 is released, and the push rod transmission rod 19 resets downward under the action of the spring 18. During the resetting process, the transition arc segment 25 contacts the top end of the lock rib 21, thereby slidingly cooperating, causing the push rod transmission rod 19 to rotate a second time, and the lock rib 21 slides into the push rod unlocking groove 23. At the same time, the push rod lock card 15 is disengaged from the connector lock card 7 to complete the unlocking.

[0044] In practice, a push rod alignment column 28 is coaxially arranged at the inner end of the push rod transmission rod 19 , and the push rod transmission rod 20 is a hollow structure with an open inner end, and the lower part of the push rod alignment column 28 is inserted into the push rod transmission rod 20 .

[0045] In practice, the bottom end of the push rod transmission rod 20 is connected to the push rod 11 through the push rod stabilizing column 29 , and a push rod limiting piece 30 is provided at the bottom end of the push rod stabilizing column 29 .

[0046] In practice, the push rod sliding slot 27 and the ejector rod unlocking slot 23 have the same width.

[0047] In practice, the cross-sections of the connector lock 7 and the push rod lock 15 are both fan-shaped.

[0048] In practice, the top end of the locking rib 21 is an arc surface adapted to the transition arc segment 25, which is more conducive to achieving sliding fit.

[0049] In practice, the push rod transmission rod 19 and the push rod 13 are connected by threads, and the housing 9 and the housing stabilizing plate 12 are connected by threads, which facilitates disassembly and replacement of the spring 18.

[0050] The solution provided by the embodiment of the present invention is that the push rod 11 and the push rod 13 are acted upon by the automatic telescopic locking mechanism 14, so that when the push rod 11 is dragged upward, the push rod 13 is lifted and rotated at the same time, thereby realizing the rapid locking or separation of the detachable bottom mold 2 and the quick-release lock connector 3. The solution has a wide range of applications, is convenient for construction, shortens the construction period, and reduces construction costs.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A construction method for a detachable bottom formwork steel bar truss floor deck, characterized in that: include: Determine the reinforcement specifications and the thickness of the removable bottom formwork in the steel truss; A quick-release lock connector is manufactured according to the reinforcement specifications. The quick-release lock connector includes a curved notch and a U-shaped notch arranged at the top for fixing the steel bar truss, a connector lock opening is opened at the bottom, and a connector lock card is arranged at the bottom of the inner side of the connector lock opening; A quick-release lock is manufactured according to the specifications of the quick-release lock connector and the thickness of the detachable bottom mold. The quick-release lock includes a cylindrical shell with an open top surface, a shell notch is provided on the bottom surface of the shell, a push rod is passed through the shell notch, a shell stabilizing plate is provided at the open end of the shell, a through hole is provided on the shell stabilizing plate opposite to the shell notch, a push rod is passed through the through hole, the push rod and the inner ends of the push rod placed in the shell are connected by an automatic telescopic locking mechanism, and a push rod locking card adapted to the connector locking card is provided on the top side of the push rod; Insert the lower chord steel bar on one side of the steel truss into the curved notch from the side, and press the lower chord steel bar on the other side into the U-shaped notch to complete the clamping and fixing; Lay the steel trusses that have been fixed by clamping on the removable bottom formwork, and align the locks of the connectors with the plate holes pre-opened on the removable bottom formwork during the laying process; Insert the quick-release lock through the plate hole into the lock port of the connector from the bottom of the detachable bottom mold. During the insertion process, the outer shell stabilizing plate fits the detachable bottom mold, push the push rod upward, and then drive the push rod upward through the automatic telescopic locking mechanism. The push rod lock card passes through the gap between the lock cards of the connector. After pushing it into place, release the push rod. The push rod is reset downward under the action of the automatic telescopic locking mechanism. At the same time, during the reset process, the push rod rotates under the action of the automatic telescopic locking mechanism. Finally, the push rod lock card is locked on the connector lock card to complete the locking and fixing, so that the steel truss is fixed to the detachable bottom mold; The floor decking is constructed using fixed steel trusses and removable bottom formwork according to conventional procedures.

2. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 1, characterized in that: The automatic telescopic locking mechanism comprises a spring, a push rod transmission rod, a push rod transmission rod and a locking ridge arranged on the inner wall of the shell and extending axially from the shell, the push rod transmission rod is coaxially connected with the push rod, the spring is sleeved on the push rod and the two ends are respectively against the shell stabilizing plate and the push rod transmission rod, and the push rod transmission rod is coaxially connected with the push rod; a push rod locking groove and a push rod unlocking groove are arranged at intervals on the circumferential surface of the push rod transmission rod, an inner side surface of the push rod locking groove is in the shape of an arc, and a transition arc section is arranged from the notch on the side of the push rod locking groove away from the inner side surface of the arc to the middle of the push rod unlocking groove, and the push rod unlocking groove is adapted to the locking ridge; a push rod linkage groove and a push rod sliding groove are arranged at intervals on the circumferential surface of the push rod transmission rod, the push rod linkage groove is adapted to the transition arc section and one side is connected to the middle of the push rod sliding groove, and the push rod sliding groove maintains sliding cooperation with the locking ridge; When the lock is unlocked, the push rod transmission rod is pushed upward through the push rod, and the push rod linkage groove in the push rod transmission rod contacts the transition arc section to lift the push rod transmission rod upward and compress the spring. When the push rod unlocking groove disengages from the lock ridge upward, the push rod transmission rod rotates once under the cooperation of the push rod linkage groove and the transition arc section, and the push rod unlocking groove passes over the lock ridge in the circumferential direction. Thereafter, the push rod is released, and the push rod transmission rod resets downward under the action of the spring. During the resetting process, the arc-shaped inner side surface in the locking groove of the push rod contacts the top of the lock ridge, thereby sliding and fitting, causing the push rod transmission rod to rotate a second time. When the top of the lock ridge slides to the bottom of the locking groove of the push rod, the push rod lock card is locked on the connecting piece lock card to complete the locking.

3. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: When the quick-release lock needs to be removed after the construction of the floor deck is completed, the push rod transmission rod is pushed upward again by the push rod. The push rod linkage groove in the push rod transmission rod contacts the arc-shaped inner side surface in the top rod locking groove to lift the top rod transmission rod upward. When the top rod locking groove disengages from the lock ridge upward, the top rod transmission rod rotates once under the cooperation of the push rod linkage groove and the arc-shaped inner side surface, and the top rod locking groove passes over the lock ridge in the circumferential direction. Thereafter, the push rod is released, and the top rod transmission rod resets downward under the action of the spring. During the resetting process, the transition arc section contacts the top end of the lock ridge, thereby sliding and fitting, causing the top rod transmission rod to rotate a second time, and the lock ridge slides to the top rod unlocking groove. At the same time, the top rod lock card is disengaged from the connector lock card to complete the unlocking.

4. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: The inner end of the push rod transmission rod is coaxially provided with a push rod alignment column, the push rod transmission rod is a hollow structure with an inner end opening, and the lower part of the push rod alignment column is inserted into the push rod transmission rod.

5. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: The bottom end of the push rod transmission rod is connected with the push rod through a push rod stabilizing column, and a push rod limiting piece is arranged at the bottom end of the push rod stabilizing column.

6. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: The width of the push rod sliding slot is the same as the push rod unlocking slot.

7. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: The cross sections of the connecting piece lock card and the ejector rod lock card are both fan-shaped.

8. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: The top of the locking ridge is an arc surface adapted to the transition arc section.

9. The construction method of the detachable bottom form steel bar truss floor deck as claimed in claim 2, characterized in that: The push rod transmission rod and the push rod are connected by threads, and the shell and the shell stabilizing plate are connected by threads.

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