CN219060609U

CN219060609U - Novel truss rib

Info

Publication number: CN219060609U
Application number: CN202320028581.4U
Authority: CN
Inventors: 陈彦松; 董陆鹏; 王昊嵩; 范世达
Original assignee: Hebei Xuelong Machinery Manufacture Co ltd
Current assignee: Hebei Xuelong Machinery Manufacture Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-05-23
Anticipated expiration: 2033-01-06

Abstract

The novel truss rib comprises an upper chord rib, a lower chord rib and lattice ribs, wherein the lower chord ribs are arranged at two sides below the upper chord rib, the upper chord ribs and the lower chord ribs are arranged in parallel, the upper chord ribs are connected with each lower chord rib through the lattice ribs, the upper inflection point of each lattice rib is higher than the upper chord rib, and the lower inflection point of each lattice rib is lower than the lower chord rib; the upper and lower ends of the lattice bars of the utility model are protruded to the corresponding upper chord bars and lower chord bars, and the lattice bars have the function of reinforcing structures in the reinforcement cage, and can meet the structural requirements and stress requirements of truss bars.

Description

Novel truss rib

Technical Field

The utility model belongs to the field of buildings, and particularly relates to a novel truss rib.

Background

The assembled truss rib is generally formed by arranging three straightened steel bars according to a triangle, and is connected through two long-wave-shaped bent lattice ribs, so that the assembled truss rib is various in steel bar model and stable in distance, is suitable for being used as a connecting rib between a connecting concrete sheet and sandwich concrete for secondary pouring, and can bear larger shear stress by adopting a laminated floor slab of the steel bar truss.

In the manufacturing process of the concrete prefabricated member, truss ribs are needed, in the prefabricating process of certain products, only two of three straightened steel bars are needed to be embedded in a member, and the uppermost straightened steel bar is used for secondary pouring.

The truss rib in the existing precast concrete member has lower stability in use, so that the engineering quality can be influenced.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a novel truss rib which can effectively strengthen a structure.

The technical scheme adopted by the utility model is as follows:

the utility model provides a novel truss muscle, its includes string muscle, lower string muscle and lattice muscle, lower string muscle has two and is located the below both sides of string muscle, goes up string muscle and lower string muscle parallel arrangement and will go up string muscle and every lower string muscle through the lattice muscle and be connected, the last inflection point of lattice muscle is higher than string muscle, and lower inflection point is less than lower string muscle.

Further, the upper chord rib and the two lower chord ribs form an isosceles triangle.

Further, the upper chord tendons are located at the inner sides of the two lattice tendons, and the lower chord tendons are located at the outer sides of the corresponding lattice tendons respectively.

Further, two lattice bars are symmetrically arranged at two sides of the upper chord bar.

Further, the lattice ribs are continuous bending rods, and the bending parts of the lattice ribs are in smooth transition;

or the lattice bars are approximately sinusoidal.

Further, the upper chord rib and the lattice rib are welded or bound and connected with the lower chord rib.

Further, a temporary support structure is arranged in front of the two lattice bars, and the temporary support structure is arranged between the connection positions of the two lattice bars and the lower chord bars.

Further, the temporary supporting structure comprises a connecting block matched with the lattice ribs and the lower chord ribs at two sides respectively, a connecting shaft arranged at the inner side of the connecting block and a sleeve arranged at the inner side of the other connecting block, wherein the connecting shaft is sleeved in the sleeve, and a lock pin device is arranged between the connecting shaft and the sleeve.

Further, the lock pin device comprises a lock block arranged on the side wall of the sleeve through a rotating shaft and a handle arranged on one side of the lock block, a transverse sliding groove is arranged on the side wall of the sleeve, a pin shaft is arranged in the sliding groove in a sliding manner, and a spring is arranged between the end part of the handle and the pin shaft;

the front side wall upper portion of locking piece is the arc, and the lower part is the plane and is used for the tip cooperation with the connecting axle, and the locking piece eccentric setting, when the handle was located right side horizontal position, the front side wall of locking piece stretched into sleeve inside and the connecting axle cooperation, when the handle was located left side horizontal position, there was the clearance between locking piece and the connecting axle.

The utility model has the positive effects that:

the upper and lower ends of the lattice bars are respectively protruded to correspond to the upper chord bars and the lower chord bars, so that the area of the whole steel bar contacted with cement is larger than that of a traditional truss bar structure, the reinforcement structure is arranged in a steel bar cage, and the structural requirement and the stress requirement of the truss bars can be met.

Meanwhile, compared with the existing truss rib, the truss rib has the same working procedures, but is more convenient to manufacture.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a left-hand structural schematic diagram of the present utility model;

FIG. 3 is an isometric view of the present utility model;

FIG. 4 is a schematic view of a latch mechanism according to the present utility model;

fig. 5 is a schematic view showing a state of the lock block and the connecting shaft in cooperation with each other.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1

As shown in fig. 1-3, this embodiment provides a novel truss rib, including last chord rib 1, lower chord rib 2 and lattice rib 3, go up chord rib 1's quantity and be one, lower chord rib 2's quantity is two, lattice rib 3's quantity is two, go up chord rib 1 and lower chord rib 2 parallel arrangement and be isosceles triangle arrangement from the cross-section, and go up chord rib 1 and be located the position that leans on. The lattice bars 3 are mounted on the upper and lower chord bars, specifically, the upper chord bar 1 is located at the inner side of the lattice bars 3, the lower chord bar 2 is located at the outer side of the lattice bars 3, that is, two lattice bars 3 are symmetrically mounted at the left and right sides of the upper chord bar 1, the upper end of the lattice bar 3 protrudes the upper chord bar 1, and the lower end also protrudes the lower chord bar 2.

Preferably, the lattice bar 2 is in an approximate sinusoidal shape or is a continuous bending bar, the bending part of the bending bar is in smooth transition, and the upper end and the lower end of the lattice bar 3 are the upper inflection point and the lower inflection point of the lattice bar 3.

Preferably, the upper chord rib, the lower chord rib and the lattice rib 3 are connected in a welding or binding mode.

The concrete requirements of the height of the up-and-down protrusion of the truss rib are as follows: the in-situ casting height of the laminated slab is a fixed value, so that the protruding part on the lattice bar 3 cannot exceed the casting height, and the steel bar is prevented from being exposed after in-situ casting. The protruding part below the lattice rib 3 and the bottom surface of the laminated plate form a height protection layer to prevent the lower chord rib from being overlarge in size from the ground of the laminated plate.

The area of the reinforcing steel bar contacted with the cement is enlarged after the lattice bars are added, so that the structural strength after the building can be enhanced.

Example 2

This embodiment is based on a further development of embodiment 1, since the truss rib of the utility model can be prefabricated, a temporary support structure is added inside it for preventing deformation of the truss rib during transportation, in particular, between the connection locations of the lattice rib 3 and the lower chord rib 2.

As shown in fig. 4 and 5, the temporary supporting structure comprises a connecting block 4 respectively clamped with lattice ribs 3 and lower chord ribs 2 on two sides, a connecting shaft 5 arranged on the inner side wall of the connecting block 4, and a sleeve 6 arranged on the inner wall side of the other connecting block 4, wherein the connecting shaft 5 is sleeved in the sleeve 6, and a locking pin device is arranged on the side wall of the sleeve 6 and can play a limiting role on the connecting shaft 5.

Specifically, the lock pin device comprises a locking block 8 arranged on the side wall of the sleeve 6 through a rotating shaft 7 and a handle 9 arranged on one side of the locking block 8, wherein the locking block 8 is eccentrically arranged, when the handle 9 is in a right horizontal position as shown in fig. 5, the bottom surface of the locking block 8 enters into the sleeve 6 to interfere with the connecting shaft 5, so that the lock pin device can play a limiting role, and when the handle 9 is in a left horizontal position, the bottom surface of the locking block 8 does not enter into the sleeve 6 to form a gap with the connecting shaft 5, so that the movement of the connecting shaft 5 in the sleeve 6 can not be interfered. A groove 12 is provided in the side wall of the sleeve 6 for the placement of the handle 9.

Preferably, a sliding groove 10 is arranged on the sleeve 6, a pin is arranged in the sliding groove 10, and a spring 11 is arranged between the end of the handle 9 and the pin. The handle 9 can be kept in a horizontal state by a spring, and is prevented from rotating randomly.

The front side wall (namely one side for being matched with the connecting shaft 5) of the locking piece 8 is arc-shaped in upper part, the lower part is plane, and in a limiting state, the plane is matched with the connecting shaft 5, so that the smoothness in the rotating process of the handle 9 is improved, and the limiting effect of the locking piece 8 on the connecting shaft 5 can be guaranteed.

The temporary support structure is only used for keeping the truss rib in a state to prevent deformation, and the truss rib needs to be removed when being actually constructed.

When the truss rib inner side supporting device is used, firstly, the handle 9 is shifted to the left horizontal position of fig. 5, then the two connecting blocks 4 are respectively connected with the connecting points of the lattice ribs 3 and the lower chord ribs 2 on the two sides, then the handle 9 is shifted to the right horizontal position shown in fig. 5, at the moment, the plane of the front end of the locking piece 8 is matched with the end face of the connecting shaft 5, the limiting effect is achieved, the length of the connecting shaft 5 and the sleeve 6 and the mounting position of the locking piece 8 are reasonably set, the supporting effect on the truss rib inner side can be achieved, and deformation caused by extrusion in the transportation process is prevented.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. Novel truss muscle, it includes string muscle (1), lower string muscle (2) and lattice muscle (3), its characterized in that lower string muscle (2) have two and are located the below both sides of string muscle (1) down, go up string muscle (1) and lower string muscle (2) parallel arrangement and be connected string muscle (1) and every lower string muscle (2) through lattice muscle (3) with going up string muscle (1), the last inflection point of lattice muscle (3) is higher than string muscle (1) down, and the inflection point is less than lower string muscle (2).

2. A novel truss rib according to claim 1, characterized in that the upper chord rib (1) and the two lower chord ribs (2) form an isosceles triangle.

3. The novel truss rib according to claim 1, wherein the upper chord rib (1) is located at the inner sides of the two lattice ribs (3), and the lower chord ribs (2) are located at the outer sides of the corresponding lattice ribs (3).

4. A novel truss rib according to claim 1, characterized in that two lattice ribs (3) are symmetrically arranged on both sides of the upper chord rib (1).

5. A novel truss rib according to claim 1, characterized in that the lattice rib (3) is a continuous bending rod, the bending part of which is smoothly transited;

or the lattice bars (3) are approximately sinusoidal.

6. The novel truss rib according to claim 1, wherein the upper chord rib (1) and the lattice rib (3) and the lower chord rib (2) and the lattice rib (3) are welded or bound.

7. A novel truss rib according to claim 1, characterized in that a temporary support structure is provided before the two lattice ribs, said temporary support structure being mounted between the connection locations of the two lattice ribs (3) and the lower chord rib (2).

8. The novel truss rib according to claim 7, characterized in that the temporary supporting structure comprises a connecting block (4) respectively matched with the lattice ribs (3) and the lower chord ribs (2) on two sides, a connecting shaft (5) arranged on the inner side of the connecting block (4) and a sleeve (6) arranged on the inner side of the other connecting block (4), wherein the connecting shaft (5) is sleeved in the sleeve (6) and is provided with a locking pin device between the two.

9. The novel truss rib according to claim 8, wherein the locking pin device comprises a locking block (8) arranged on the side wall of the sleeve (6) through a rotating shaft (7) and a handle (9) arranged on one side of the locking block (8), a transverse sliding groove (10) is arranged on the side wall of the sleeve (6), a pin shaft is arranged in the sliding groove (10) in a sliding mode, and a spring (11) is arranged between the end portion of the handle (9) and the pin shaft;

the front side wall upper portion of locking piece (8) is the arc, and the lower part is the plane and is used for the tip cooperation with connecting axle (5), and locking piece (8) eccentric setting is when handle (9) are located right side horizontal position, and the front side wall of locking piece (8) stretches into sleeve (6) inside and connecting axle (5) cooperation, and when handle (9) are located left side horizontal position, there is the clearance between locking piece (8) and connecting axle (5).