Isolation device for pouring of concrete with different strengths for beam-column joints

Abstract

The utility model relates to the technical field of buildings, in particular to a beam-column joint different-strength concrete pouring isolation device which comprises an isolation truss, bearing supports are welded to the left end and the right end of the isolation truss, the axes of the bearing supports are symmetrically distributed, and a center cavity is formed in the center of the isolation truss. A central cavity is formed in the isolation truss, a resistance rotating shaft supported by a damping bearing is rotationally mounted in the central cavity, a driving gear is in key connection with the resistance rotating shaft, two driven racks in meshed connection with the driving gear are movably arranged in the central cavity, connecting frames are welded to the two driven racks, and side cavities are formed in the left end and the right end of the isolation truss. According to the utility model, the isolation truss is provided with the bearing brackets which are bilaterally symmetrical, the first connecting rods and the second connecting rods which are connected in a crossed manner are arranged between the first moving plates and the second moving plates, and the opening and closing rods which are rotationally connected are arranged between the two first moving plates, so that the whole isolation device is of a flexible structure which is convenient to adjust; therefore, concrete filling is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a concrete pouring isolation device with different strengths at a beam-column node. Background Art

[0002] During the concrete pouring operation of the beam-column joints of reinforced concrete structures, due to the force design of the beam-column joints and other reasons, the concrete strength used in the structural columns is generally greater than the concrete strength used in the structural beams. The conventional pouring method is usually divided into two steps, namely, pouring the concrete of the structural columns first, and then pouring the concrete of the structural beams.

[0003] The isolation device under existing conditions is an isolation device for casting concrete of different strength grades at beam-column joints disclosed in announcement number CN214696902U. After the long strip isolation steel plate is positioned, each long strip of dense steel wire brush is overlapped together, and the steel wire brush fills the concrete casting interface of different strength grades. High-strength concrete is poured on one side of the wire mesh, and then low-strength concrete is vibrated on the other side of the wire mesh. However, the fixedly connected nodes make the isolation structure fixed as a whole, which not only limits the pouring space of concrete, but also makes it impossible to adjust the position of each node, making it difficult to achieve more comprehensive stress support with the concrete structure, and will also greatly affect the structural strength of the overall structure of the beam and column. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that fixed structural beams and columns affect concrete pouring and building structure strength, and proposes an isolating device for pouring concrete with different strengths at beam-column joints.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A beam-column node different strength concrete casting isolation device, including an isolation truss, the left and right ends of the isolation truss are welded with axially symmetrically distributed load-bearing brackets, and the isolation truss is provided with a central cavity at the center position, a resistance shaft supported by a damping bearing is rotatably installed in the central cavity, and a driving gear is keyed to the resistance shaft, two driven racks meshing with the driving gear are movably arranged in the central cavity, and connecting frames are welded to the two driven racks, side cavities are opened in the left and right ends of the isolation truss, and the isolation truss is provided with two groups of supporting mechanisms pulled by the connecting frames through the side cavities.

[0007] Preferably, the resistance shaft is disposed in the central cavity via a damping bearing, and a handle for mounting a bolt is integrally connected to one end of the resistance shaft extending out of the central cavity.

[0008] Preferably, a guide groove for slidingly fitting the driven rack is provided in the central cavity, and the two driven racks are centrally symmetrically arranged at both sides of the driving gear.

[0009] Preferably, the two side cavity axes are symmetrically distributed on both sides of the central cavity, and the central cavity is connected to the side cavity, and the connecting frame slidably extends into the side cavity.

[0010] Preferably, the supporting mechanism comprises a first limiting groove and a second limiting groove symmetrically arranged at two end positions of the side cavity, and a first movable plate and a second movable plate are slidably mounted in the first limiting groove and the second limiting groove respectively, a first sliding groove is arranged at the upper end of the first movable plate and the lower end of the second movable plate, and a first slider is slidably mounted in the two first sliding grooves, a first connecting rod is pin-connected between the two first sliders, a second sliding groove is arranged at the lower end of the first movable plate and the upper end of the second movable plate, and a second slider is slidably mounted in the two second sliding grooves, and a second connecting rod is pin-connected between the two second sliders;

[0011] The first movable plates in the two groups of the support mechanisms are both provided with grooves, and lifting blocks are slidably sleeved in the two grooves, and the two lifting blocks are pin-connected with rotatably connected opening and closing rods.

[0012] Preferably, the first connecting rod is rotatably connected to the central end point of the second connecting rod.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model uses an isolation truss to set a left-right symmetrical load-bearing bracket, and sets a meshing driving gear and a driven rack in the isolation truss, so that the left-right symmetrically distributed support mechanism can be telescopically adjusted and moved under the traction of the driven rack.

[0015] 2. The utility model arranges a first movable plate and a second movable plate symmetrically distributed along a symmetry axis in the side cavity, and arranges a cross-connected first connecting rod and a second connecting rod between the first movable plate and the second movable plate, and at the same time arranges a rotatably connected opening and closing rod between the two first movable plates, so that the isolation device as a whole has a flexible structure that is easy to adjust, thereby facilitating the filling of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a concrete pouring isolation device with different strengths at a beam-column joint proposed by the utility model;

[0017] Figure 2 This is a bottom view of a concrete pouring isolation device with different strengths at a beam-column joint proposed by the utility model;

[0018] Figure 3The utility model is a cross-sectional view of a beam-column joint concrete pouring isolation device of different strengths.

[0019] In the figure: 1. isolation truss; 2. load-bearing bracket; 3. central cavity; 4. resistance shaft; 5. driving gear; 6. guide groove; 7. driven rack; 8. connecting frame; 9. side cavity; 10. first limiting groove; 11. second limiting groove; 12. first movable plate; 13. second movable plate; 14. first sliding groove; 15. first sliding block; 16. first connecting rod; 17. first connecting rod; 18. second sliding block; 19. second connecting rod; 20. groove; 21. lifting block; 22. opening and closing rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 3 , a beam-column node different strength concrete pouring isolation device, comprising an isolation truss 1, the isolation truss 1 is welded with load-bearing brackets 2 symmetrically distributed on the left and right ends, and the isolation truss 1 is provided with a central cavity 3 at the center. Figure 3 A resistance shaft 4 supported by a damping bearing is rotatably installed in the central cavity 3 to facilitate self-limiting of the resistance shaft 4 to prevent the resistance shaft 4 from rotating on its own, and a driving gear 5 is keyed to the resistance shaft 4. Two driven racks 7 meshing with the driving gear 5 are movably arranged in the central cavity 3, and a connecting frame 8 is welded to the two driven racks 7. By driving the resistance shaft 4 to rotate clockwise or counterclockwise, the two driven racks 7 can move toward or in opposite directions.

[0022] The isolation truss 1 has side cavities 9 at both ends, and the isolation truss 1 is provided with two sets of support mechanisms pulled by the connecting frame 8 through the side cavities 9. Figure 1 With attached Figure 2 :

[0023] On the one hand, the supporting mechanism includes a first limiting groove 10 and a second limiting groove 11 symmetrically arranged at the two ends of the side cavity 9, and a first movable plate 12 and a second movable plate 13 are slidably mounted in the first limiting groove 10 and the second limiting groove 11 respectively, a first sliding groove 14 is arranged at the upper end of the first movable plate 12 and the lower end of the second movable plate 13, and a first slider 15 is slidably mounted in the two first sliding grooves 14, a first connecting rod 16 is pin-connected between the two first sliders 15, a second sliding groove 17 is arranged at the lower end of the first movable plate 12 and the upper end of the second movable plate 13, and a second slider 18 is slidably mounted in the two second sliding grooves 17, and a second connecting rod 19 is pin-connected between the two second sliders 18;

[0024] On the other hand, the first movable plates 12 in the two sets of support mechanisms are both provided with grooves 20, and lifting blocks 21 are slidably mounted in the two grooves 20, and the two lifting blocks 21 are pin-connected with rotatably connected opening and closing rods 22.

[0025] The resistance shaft 4 is arranged in the central cavity 3 through a damping bearing, and a handle for installing bolts is integrally connected to one end of the resistance shaft 4 extending out of the central cavity 3, so as to fix the angle of the resistance shaft 4 rotated to any angle.

[0026] A guide groove 6 for slidingly fitting the driven rack 7 is provided in the central cavity 3 , and the two driven racks 7 are centrally symmetrically arranged at both sides of the driving gear 5 , and the driving gear 5 is used to realize synchronous driving of the two driven racks 7 .

[0027] The two side cavities 9 are axially symmetrically distributed on both sides of the central cavity 3 , and the central cavity 3 is connected to the side cavities 9 . The connecting frame 8 slides and extends into the side cavity 9 to facilitate pulling the first movable plate 12 located in the side cavity 9 .

[0028] The first connecting rod 16 is rotatably connected to the center end point of the second connecting rod 19.

[0029] The functional principle of the utility model can be explained through the following operation modes:

[0030] In the initial state, the first movable plate 12 and the second movable plate 13 are in a closed state. When the distance between the two needs to be adjusted, the resistance shaft 4 is controlled by the handle to rotate;

[0031] The resistance shaft 4 drives the driving gear 5 to rotate, so that the two driven racks 7 move toward each other, thereby pulling the two first moving plates 12 in the two sets of supporting mechanisms, so that the two first moving plates 12 gradually approach each other, and at the same time, the lifting block 21 moves in the groove 20 to support the two opening and closing rods 22 to gradually close;

[0032] The first movable plate 12 enables the first slider 15 to slide in the first slide groove 14 through the first connecting rod 16, and enables the second slider 18 to slide in the second slide groove 17 through the second connecting rod 19, thereby supporting the second movable plate 13 away from the first movable plate 12, and then opening the first movable plate 12 and the second movable plate 13;

[0033] The first moving plate 12 and the second moving plate 13 are fixed in position by tightening the bolts in the handle.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A beam-column joint different strength concrete pouring isolation device, comprising an isolation truss (1), characterized in that: The isolation truss (1) is welded with load-bearing brackets (2) symmetrically distributed along the axis, and a central cavity (3) is provided at the center of the isolation truss (1). A resistance shaft (4) supported by a damping bearing is rotatably installed in the central cavity (3), and a driving gear (5) is keyed to the resistance shaft (4). Two driven racks (7) meshingly connected to the driving gear (5) are movably provided in the central cavity (3), and a connecting frame (8) is welded to the two driven racks (7). Side cavities (9) are provided in the left and right ends of the isolation truss (1), and the isolation truss (1) is provided with two groups of supporting mechanisms pulled by the connecting frame (8) through the side cavities (9).

2. A beam-column joint different strength concrete pouring isolation device according to claim 1, characterized in that: The resistance shaft (4) is arranged in the central cavity (3) via a damping bearing, and a handle for installing a bolt is integrally connected to one end of the resistance shaft (4) extending out of the central cavity (3).

3. The device for isolating beam-column joint concrete with different strengths according to claim 1, characterized in that: A guide groove (6) for slidingly fitting a driven rack (7) is provided in the central cavity (3), and two driven racks (7) are centrally symmetrically arranged at two sides of the driving gear (5).

4. The device for isolating beam-column joint concrete with different strengths according to claim 1, characterized in that: The two side chambers (9) are axially symmetrically distributed on both sides of the central chamber (3), and the central chamber (3) is connected to the side chamber (9), and the connecting frame (8) slidably extends into the side chamber (9).

5. The device for isolating beam-column joint concrete with different strengths according to claim 1, characterized in that: The support mechanism comprises a first limiting groove (10) and a second limiting groove (11) symmetrically arranged at two ends of the side cavity (9), and a first movable plate (12) and a second movable plate (13) are respectively slidably mounted in the first limiting groove (10) and the second limiting groove (11), a first sliding groove (14) is arranged at the upper end of the first movable plate (12) and the lower end of the second movable plate (13), and a first sliding block (15) is slidably mounted in the two first sliding grooves (14), a first connecting rod (16) is pin-connected between the two first sliding blocks (15), a second sliding groove (17) is arranged at the lower end of the first movable plate (12) and the upper end of the second movable plate (13), and a second sliding block (18) is slidably mounted in the two second sliding grooves (17), and a second connecting rod (19) is pin-connected between the two second sliding blocks (18); The first movable plates (12) in the two groups of the support mechanisms are both provided with grooves (20), and lifting blocks (21) are slidably mounted in the two grooves (20), and the two lifting blocks (21) are pin-connected with rotatably connected opening and closing rods (22).

6. The device for isolating beam-column joint concrete with different strengths according to claim 5, characterized in that: The first connecting rod (16) is rotatably connected to the central end point of the second connecting rod (19).

Images