Connecting device of detachable bottom die steel bar truss floor support plate

Abstract

The utility model relates to the field of building construction, in particular to a connecting device of a steel bar truss floor support plate with a detachable bottom die, and designs a quick-release lock connecting piece and a quick-release lock structure which are suitable for quick installation or separation between a steel bar truss and the detachable bottom die. When the push rod is dragged upwards, the ejector rod is jacked up and rotated at the same time, so that the detachable bottom die and the quick-release lock connecting piece are quickly locked or separated, the application range is wide, construction is convenient, the construction period is shortened, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a connecting device for 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 floor decking bottom formwork, 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. As a result, during the actual installation and removal of the bottom formwork, workers are required to tighten the fixing bolts one by one to complete the installation or removal work. The project volume is large, which greatly affects the construction progress and increases the construction cost. Utility Model Content

[0003] In order to solve the above problems, an embodiment of the present invention provides a connection device for a detachable bottom formwork steel bar truss floor deck.

[0004] The embodiment of the utility model provides a connecting device for a detachable bottom formwork steel bar truss floor deck, comprising a quick-release lock connector and a quick-release lock; wherein,

[0005] The quick-release lock connector includes a curved notch and a U-shaped notch set at the top for fixing the steel truss, a connector lock opening at the bottom, and a connector lock card set opposite to the bottom inside the connector lock opening;

[0006] The quick-release lock includes a cylindrical shell with an open top surface, a shell notch provided on the bottom surface of the shell, a push rod passed through the shell notch, a shell stabilizing plate provided at the open end of the shell, a through hole provided on the shell stabilizing plate opposite to the shell notch, a push rod 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 lock card adapted to the connector lock card is provided on the side surface of the top end of the push rod.

[0007] 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 convenient for construction, shortens the construction period, and reduces construction costs.

[0008] Optionally, an 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 extending axially along the shell, the push rod transmission rod is coaxially connected to the push rod, the spring is sleeved on the push rod and both ends are respectively against the shell stabilizing plate and the push rod transmission rod, and the push rod transmission rod is coaxially connected to 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 provided 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.

[0009] 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.

[0010] 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.

[0011] Optionally, the push rod sliding slot and the push rod unlocking slot have the same width.

[0012] Optionally, the cross-sections of the connector lock and the ejector rod lock are both fan-shaped.

[0013] Optionally, the top end of the locking ridge is an arc surface adapted to the transition arc segment.

[0014] Optionally, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of a locked state of a steel bar truss and a detachable bottom form provided in an embodiment of the present utility model;

[0017] Figure 2 A schematic structural diagram of a quick-release lock provided by an embodiment of the present utility model;

[0018] Figure 3 A schematic diagram of the structure of a push rod provided by an embodiment of the present utility model;

[0019] Figure 4 A schematic diagram of the structure of a push rod transmission rod provided by an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the cooperation structure of a push rod transmission rod and a push rod transmission rod provided in an embodiment of the utility model Figure 1 ;

[0021] Figure 6 A schematic diagram of the cooperation structure of a push rod transmission rod and a push rod transmission rod provided in an embodiment of the utility model Figure 2 ;

[0022] Figure 7 A schematic diagram of the main structure of a quick-release lock connector provided by an embodiment of the present utility model;

[0023] Figure 8 The present invention provides a schematic diagram of a quick-release lock connector as viewed from above.

[0024] Among them, 1. Steel truss; 2. Removable bottom formwork; 3. Quick-release lock connector; 4. Angle 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. Locking ridge; 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

[0025] 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 schematic embodiments of the present invention and their description are used to explain the present invention, but are not intended to limit the present invention.

[0026] See also Figures 1-8 The embodiment of the present invention provides a connecting device for a detachable bottom formwork steel bar truss floor deck, comprising a quick-release lock connector 3 and a quick-release lock 8, wherein:

[0027] The quick-release lock connector 3 includes a curved notch 4 and a U-shaped notch 5 provided at the top for fixing the steel truss 1, a connector lock opening 6 is provided at the bottom, and a connector lock clamp 7 is provided at the bottom of the connector lock opening 6;

[0028] 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 passed through the shell notch 10. A shell stabilizing plate 12 is provided at the open end of the shell 9. A through hole is provided on the shell stabilizing plate 12 opposite to the shell notch 10. A push rod 13 is passed through the through hole. The inner ends of the push rod 11 and the push rod 13 placed in the shell 9 are connected by an automatic telescopic locking mechanism 14. A push rod lock card 15 adapted to the connector lock card 7 is provided on the side surface of the top end of the push rod 13.

[0029] During use, 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; the steel truss 1 that has been clamped and fixed is laid on the detachable bottom form 2, and during the laying process, the connector lock 6 is aligned with the plate hole 17 pre-opened on the detachable bottom form 2; the quick-release lock 8 is inserted into the connector lock 6 through the plate hole 17 from the bottom of the detachable bottom form 2, and during the insertion process, the outer shell stabilizing plate 12 is fitted with the detachable bottom form 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 top 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 top rod 13 is reset downward under the action of the automatic telescopic locking mechanism 14. At the same time, during the reset process, the top rod 13 rotates under the action of the automatic telescopic locking mechanism 14. Finally, the top rod lock card 15 is clamped on the connector lock card 7 to complete the locking and fixing, thereby fixing the steel truss 1 and the detachable bottom formwork 2; the fixed steel truss 1 and the detachable bottom formwork 2 are used to carry out floor decking construction according to conventional procedures, such as supporting a support frame under the detachable bottom formwork 2, pouring concrete on the detachable bottom formwork 2, etc.

[0030] 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 ridge 21 arranged on the inner wall of the shell 9 and extending axially along 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 circumference 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 arc-shaped, and a transition arc section 25 is provided from the notch of the push rod locking groove 22 on the side away from the arc-shaped inner side surface 24 to the middle of the push rod unlocking groove 23. 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. 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. The push rod sliding groove 27 maintains sliding cooperation with the lock rib 21.

[0031] When the top of the lock rib 21 slides to the bottom of the push rod locking groove 22, the push rod lock card 15 is clamped on the connector lock card 7 to complete the locking.

[0032] 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 the push rod transmission rod 19 upward. 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 sliding and fitting, 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.

[0033] In practice, a push rod alignment column 28 is coaxially provided 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 .

[0034] During implementation, 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 the bottom end of the push rod stabilizing column 29 is provided with a push rod limiting piece 30 .

[0035] In practice, the push rod sliding slot 27 and the push rod unlocking slot 23 have the same width.

[0036] In practice, the cross-sections of the connector lock 7 and the push rod lock 15 are both fan-shaped.

[0037] In practice, the top end of the locking rib 21 is an arc surface adapted to the transition arc section 25 , which is more conducive to achieving sliding fit.

[0038] 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.

[0039] 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. It has a wide range of applications, is convenient for construction, shortens the construction period, and reduces construction costs.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A connecting device for a detachable bottom formwork steel bar truss floor deck, characterized in that: It includes a quick-release lock connector and a quick-release lock; wherein, The quick-release lock connector includes a curved notch and a U-shaped notch set at the top for fixing the steel truss, a connector lock opening at the bottom, and a connector lock card set opposite to the bottom inside the connector lock opening; The quick-release lock includes a cylindrical shell with an open top surface, a shell notch provided on the bottom surface of the shell, a push rod passed through the shell notch, a shell stabilizing plate provided at the open end of the shell, a through hole provided on the shell stabilizing plate opposite to the shell notch, a push rod 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 lock card adapted to the connector lock card is provided on the side surface of the top end of the push rod.

2. The connecting device of the detachable bottom formwork steel bar truss floor deck according to claim 1, characterized in that: The automatic telescopic locking mechanism includes a spring, a push rod transmission rod, a push rod transmission rod and a lock ridge arranged on the inner wall of the shell and extending axially along 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 provided 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 lock 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 lock ridge.

3. The connecting device of the detachable bottom formwork steel bar truss floor deck according to 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 open inner end. The lower part of the push rod alignment column is inserted into the push rod transmission rod.

4. The connecting device of the detachable bottom formwork steel bar truss floor deck according to claim 2, characterized in that: The bottom end of the push rod transmission rod is connected to the push rod through a push rod stabilizing column, and the bottom end of the push rod stabilizing column is provided with a push rod limiting piece.

5. The connecting device of the detachable bottom formwork steel bar truss floor deck according to claim 2, characterized in that: The width of the push rod sliding slot is the same as the push rod unlocking slot.

6. The connecting device of the detachable bottom formwork steel bar truss floor deck according to claim 2, characterized in that: The cross sections of the connector lock card and the ejector rod lock card are both fan-shaped.

7. The connecting device of the detachable bottom formwork steel bar truss floor deck according to claim 2, characterized in that: The top end of the locking ridge is an arc surface adapted to the transition arc section.

8. The connecting device of the detachable bottom formwork steel bar truss floor deck according to 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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