CN204139570U - Detachable cantilever steel beam pre-embedded fixing device with horizontal fixing components - Google Patents

Description

Detachable cantilever steel beam pre-embedded fixing device with horizontal fixing components

technical field

The utility model relates to a fixing device for a cantilevered steel beam, in particular to a detachable pre-embedded fixing device for a cantilevered steel beam with a horizontal fixing component.

Background technique

With the rapid development of the modern construction industry, urban medium and high-rise buildings have become the main buildings, and steel cantilevered scaffolding is one of the main types of scaffolding. With the continuous promotion of green construction concepts and the increasing importance of green construction technology, steel cantilevered scaffolding is becoming more and more important. The demand for green construction technology of scaffolding is increasing day by day.

The cantilevered steel beams of the traditional external scaffolding are sawn into wedges by wooden beams and inserted between the cantilevered steel beams and the embedded parts to prevent the horizontal movement of the I-beams. This method will cause waste of wooden beams and is not conducive to On-site civilized construction. Workers are often more casual when operating on site, and the wooden beams are not cut into wedge shapes, and the wooden beams are inserted between the cantilevered steel beams and the embedded parts and are not tapped tightly, resulting in a gap between the cantilevered steel beams and the embedded parts. The inserted wooden joists often fail to fix in the horizontal direction, so that the cantilevered steel beams still have the risk of swinging in the horizontal direction, which in turn affects the stability of the entire outer frame system. In addition, in the traditional method, the U-shaped steel bar pull ring is used as the embedded part of the steel beam, which cannot be recycled repeatedly, which increases the cost investment, and has a certain pollution to the environment, which is not environmentally friendly.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide a detachable cantilevered steel beam pre-embedded fixing device with a horizontal fixing component, which fastens and fixes the cantilevered steel beam in the horizontal direction, and is also convenient for installation. Dismantling is beneficial for repeated use.

The purpose of this utility model adopts following technical scheme to realize:

Detachable cantilevered steel beam pre-embedded fixing device with horizontal fixing components, including cantilevered steel beams with "I"-shaped cross section, concrete structural parts, horizontal fixing components, pressure plate, bottom plate, at least two screws, The first nuts are threadedly matched with the respective screws. The screws are respectively arranged on both sides of the cantilevered steel beam. The screws are arranged vertically and spaced apart from each other. One end is press-fitted with the side of the cantilevered steel beam along the horizontal direction. The lower part of each screw and the bottom plate are pre-embedded in the concrete structure. The first nut is threaded and locked, the pressing plate is press-fitted with the top of the cantilevered steel beam along the vertical direction, and the concrete structure is press-fitted with the bottom end of the cantilevered steel beam along the vertical direction.

Preferably, there are at least two horizontal fixing components, which are respectively arranged on two sides of the cantilevered steel beam.

Preferably, the horizontal fixing assembly includes a second nut threaded with the screw rod, a threaded adjustment rod extending horizontally from one side of the second nut, and a pressure head threaded with the threaded adjustment rod, respectively located on the cantilevered steel The pressure heads on both sides of the beam are opposite and press fit with the side of the cantilevered steel beam along the horizontal direction.

Preferably, the pressure head includes a connecting pipe and a vertical plate, the inner wall of the connecting pipe is provided with an internal thread threaded with the threaded adjustment rod, and the vertical plate is attached to the side of the cantilevered steel beam.

Preferably, the screw rod is provided with a first external thread threaded with the first nut and a second external thread threaded with the second nut, and the first external thread and the second external thread are spaced apart.

Preferably, the pressure plate is provided with a round hole and an oblong hole for the screw to penetrate. The round hole and the oblong hole are respectively arranged on both sides of the cantilevered steel beam. The round hole is closely fitted with the screw, and the length direction of the oblong hole is Perpendicular to the sides of the cantilevered steel beams.

Preferably, a backing plate is placed between the bottom end of the cantilevered steel beam and the concrete structural member.

Preferably, at least two bushings are fixed on the bottom plate, each bushing is respectively arranged on both sides of the cantilevered steel beam, and both protrude upwards from the concrete structure, and the screws are inserted into each inside the casing.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The utility model can not only force the pressure plate to compress and fix the cantilevered steel beam through the locking of the screw rod and the first nut in the vertical direction, but also fix the cantilevered steel beam in the horizontal direction through the horizontal fixing component. Shaped steel beams can greatly offset the torque of the cantilevered steel beams along the section direction, avoiding the danger of swinging in the horizontal direction, thereby ensuring the stability of the entire cantilevered steel scaffolding;

(2) The utility model can adjust the force of horizontally compressing the cantilevered steel beam through the thread adjustment rod and the screw thread of the pressure head. Moreover, since the first nut is threaded with the screw rod, the second nut is also threaded with the screw rod. , it can make the installation process easy to operate and the construction is convenient; in addition, the setting of round holes and long round holes is conducive to the adjustment of the position and spacing of the screws located on both sides of the cantilevered steel beam, which further facilitates installation and disassembly, and can be turned over many times after dismantling Use, cost saving, no environmental pollution;

(3) The bottom plate of the utility model combined with the sleeve can fix the lower part of the screw, so that the lower part of the screw can be pre-embedded in the concrete structure. At the same time, the sleeve can isolate the screw from the concrete structure, which is convenient for installation and removal. Specifically, in When installing the cantilevered steel girder, place the cantilevered steel girder directly between the screws on both sides by a crane or tower crane and then install the pressure plate. The traditional closed U-shaped steel bar pull ring is hoisted in place by horizontal movement, which has the advantages of fast installation speed, simple and convenient process operation, and saves labor input.

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Description of drawings

Fig. 1 is the schematic diagram of the front view of the detachable cantilever steel beam pre-embedded fixing device containing horizontal fixing components of the present invention;

Fig. 2 is a structural schematic diagram of the horizontal fixing assembly of the present invention;

Figure 3 is a schematic diagram of the assembly of the utility model screw inserted into the casing;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is the structural representation of the utility model pressing plate;

Fig. 6 is a side view structural diagram of the detachable cantilever steel beam pre-embedded fixing device with horizontal fixing components of the utility model when it is actually installed and used.

In the figure: 1. Fixing frame; 10. Bottom plate; 11. Sleeve; 12. Screw; 121. First external thread; 122. Second external thread; 2. First nut; 3. Horizontal fixing component; 4. Pressing plate ;5, cantilevered steel beam; 6, concrete structure; 7, backing plate; 8, round hole; 9, long round hole; 13, vertical plate; 14, connecting pipe; Two nuts; 17, pressure head.

Detailed ways

As shown in Figure 1, the detachable cantilevered steel beam pre-embedded fixing device with horizontal fixing components includes a cantilevered steel beam 5 with an "I"-shaped cross section, a concrete structure 6, a horizontal fixing component 3, The pressure plate 4, the bottom plate 10, at least two screw rods 12, and the first nuts 2 threaded with each screw rod 12 respectively, the screw rods 12 are respectively arranged on both sides of the cantilevered steel beam 5, and each screw rod 12 is vertically arranged and spaced from each other, One end of the horizontal fixing component 3 is detachably connected with the screw rod 12, the other end of the horizontal fixing component 3 is press-fitted with the side of the cantilevered steel beam 5 along the horizontal direction, and the lower part of each screw rod 12 and the bottom plate 10 are pre-embedded in the concrete structure In the part 6, the base plate 10 is fixed to the bottom end of each screw rod 12, and the top end of each screw rod 12 passes through the pressing plate 4 and is respectively threadedly connected with each first nut 2, and the top end of the pressing plate 4 and the cantilevered steel beam 5 are vertically connected to each other. Press fit in the vertical direction, and the bottom end of the concrete structure 6 and the cantilevered steel beam 5 press fit in the vertical direction.

The cantilevered steel beam 5 can be conveniently hoisted and placed on the concrete structure 6 between the screw rods 12 on both sides. It is firmly fixed on the concrete structure 6 in the vertical direction, and the cantilevered steel beam 5 is also subjected to the horizontal force of the horizontal fixing component 3, thereby fixing the cantilevered steel beam 5 in the horizontal direction, preventing the cantilevered steel beam 5 from swing in the horizontal direction. Because the cantilevered steel beam 5 can be hung vertically between the screw rods 12 on both sides and then the first nut 2 is used to lock the pressing plate 4, so its installation and removal are convenient and fast. Wherein, there are two screw rods 12 in this example, and can also be set to a greater number, which are symmetrically arranged on both sides of the cantilevered steel beam 5 .

There are at least two horizontal fixing components 3 , which are respectively arranged on both sides of the cantilevered steel beam 5 . The horizontal fixing components 3 on both sides can respectively compress both sides of the cantilever-shaped steel beam 5 in the horizontal direction, so that the cantilever-shaped steel beam 5 can be fixed more stably in the horizontal direction.

As shown in Figures 1-2, the horizontal fixing component 3 used in this example is preferably the following structure:

The horizontal fixing assembly 3 includes a second nut 16 threaded with the screw rod 12, a threaded adjustment rod 15 extending horizontally from one side of the second nut 16, and a pressure head 17 threaded with the threaded adjustment rod 15. The pressure heads 17 on both sides of the shaped steel beam 5 are opposite and press fit with the sides of the cantilevered shaped steel beam 5 along the horizontal direction. The second nut 16 can be easily locked on the screw rod 12. At the same time, by rotating and adjusting the pressure head 17, the pressure head 17 can be stretched relative to the threaded adjustment rod 15, so that the compression of the pressure head 17 to the side of the cantilevered steel beam can be adjusted. force. Simultaneously, the second nut 16 cooperates with the thread of the screw rod 12. After the second nut 16 is rotated, it is convenient to adjust the angle at which the pressure head 17 compresses the cantilevered steel beam 5, which is convenient for alignment and helps the cantilevered steel beam 5 to maintain a horizontal direction. balance and stability.

The pressure head 17 comprises a connecting pipe 14 and a vertical plate 13, the inner wall of the connecting pipe 14 is provided with an internal thread (not marked in the figure) threaded with the threaded adjustment rod 15, the vertical plate 13 and the side surface of the cantilevered steel beam 5 fit. The vertical plate 13 of this example is a steel plate, and the function of the vertical plate 13 is to disperse the pressure transmitted from the connecting pipe 14 to the cantilevered steel beam 5, and increase the friction between the pressure head 17 and the cantilevered steel beam 5 to avoid horizontal The fixed assembly 3 and the cantilevered steel beam 5 slip.

As shown in Figure 3, the screw rod 12 is provided with a first external thread 121 threaded with the first nut 2 and a second external thread 122 threaded with the second nut 16, the first external thread 121 and the second external thread 122 spaced apart. Therefore, the first external thread 121 and the second external thread 122 can be respectively provided in the areas where the screw 12 needs to cooperate with the first nut 2 and the second nut 16 , thereby reducing the cost.

As shown in Figure 5, as a preferred embodiment of the pressing plate 4, the pressing plate 4 is provided with a round hole 8 and an oblong hole 9 for the screw 12 to penetrate, and the round hole 8 and the oblong hole 9 are respectively arranged on the cantilevered steel beam 5 The two sides of the round hole 8 and the screw rod 12 are tightly fitted, and the length direction of the long round hole 9 is perpendicular to the side of the cantilevered steel beam 5. The oblong hole 9 is convenient for the matching of the pressing plate 4 and the screw rod 12, and it is also convenient for the pressure head 17 to adjust the pressing force of the cantilevered steel beam 5.

A backing plate 7 is placed between the bottom end of the cantilevered steel beam 5 and the concrete structural member 6. The backing plate 7 can expand the compression area between the cantilevered steel beam 5 and the concrete structural member 6 and reduce the overhang The concentrated stress at the bottom end of the shaped steel beam 5 is beneficial to prevent the concrete structure 6 from being damaged or structural cracks due to stress concentration. Backing plate 7 of this example is a steel plate.

As shown in Figure 1 and Figures 3 to 4, at least two sleeves 11 are fixed on the bottom plate 10, and the number of sleeves 11 in this example is two, and there are also more numbers. Both sides of the beam 5 protrude upwards from the concrete structure 6 , and the screw rods 12 are inserted into the casings 11 one by one. The casing 11 can isolate the lower part of the screw rod 12 from the concrete structure 6, which is convenient for the turnover and recycling after installation and removal. Wherein, the screw rod 12, the casing 11 and the bottom plate 10 can form a fixing frame 1, forming a frame body fixed on the concrete structure 6 in advance. Pressing plate 4 and base plate 10 are steel plates, and sleeve pipe 11 is a PVC pipe.

During actual installation and use, as shown in Figure 6, each cantilevered steel beam 5 can be installed with at least two groups including screw rod 12, pressure plate 4, base plate 10, first nut 2, and horizontal fixing assembly 3, which is further beneficial to steel cantilevered scaffolding. stability and security. During field installation, the cantilevered steel beam 5 is directly put into the above-mentioned fixed frame 1, that is, between the screw rods 12 on both sides, and the pressure plate is locked by the first nut 2, and the cantilevered steel beam 5 is pressed vertically downward by the compression 4 It is fixed, and then the horizontal fixing assembly 3 is used to cooperate and tighten to prevent left and right deviation. When dismantling, just can directly take out cantilever-shaped steel beam 5 after loosening first nut 2 and pressing plate 4, after the top of the screw rod 12 of fixed mount 1 is tapped, fixed mount 1 falls off naturally and can be recycled.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. The scope of protection required by the utility model.

Claims (8)

1. The detachable cantilevered steel beam pre-embedded fixing device with horizontal fixing components is characterized in that it includes cantilevered steel beams with "I"-shaped cross-sections, concrete structural parts, horizontal fixing components, pressure plates, and bottom plates , at least two screw rods, and first nuts threaded with each screw rod respectively, the screw rods are respectively arranged on both sides of the cantilevered steel beam, each screw rod is vertically arranged and spaced apart from each other, and one end of the horizontal fixing component is detachably connected to the screw rod , the other end of the horizontal fixing component presses and fits with the side of the cantilevered steel beam along the horizontal direction, the lower part of each screw and the bottom plate are pre-embedded in the concrete structure, the bottom plate is fixed to the bottom end of each screw, and the top of each screw goes through After passing through the pressure plate, it is respectively screwed and connected with the first nuts. The pressure plate and the top of the cantilevered steel beam are press-fitted along the vertical direction, and the concrete structure is pressed and fitted with the bottom end of the cantilevered steel beam along the vertical direction. . 2. The detachable pre-embedded fixing device for cantilevered steel beams with horizontal fixing components according to claim 1, characterized in that: there are at least two horizontal fixing components, which are respectively arranged on two sides of the cantilevered steel beams. side. 3. The detachable cantilever steel beam pre-embedded fixing device with a horizontal fixing component according to claim 2, characterized in that: the horizontal fixing component includes a second nut threaded with the screw rod, and the second The threaded adjustment rod extending horizontally from one side of the nut and the pressure head threaded with the threaded adjustment rod are respectively located on the two sides of the cantilever steel beam opposite to each other and both press against the side of the cantilever steel beam in the horizontal direction Cooperate. 4. The detachable cantilever steel beam pre-embedded fixing device with horizontal fixing components according to claim 3, characterized in that: the pressure head includes a connecting pipe and a vertical plate, and the inner wall of the connecting pipe is provided with The internal thread of the threaded adjustment rod is threaded, and the vertical plate is attached to the side of the cantilevered steel beam. 5. The detachable cantilever-shaped steel beam pre-embedded fixing device with horizontal fixing components according to claim 3, characterized in that: the screw rod is provided with a first external thread that is threaded with the first nut and a The second external thread engaged with the second nut is threaded, and the first external thread is spaced apart from the second external thread. 6. The detachable cantilevered steel beam pre-embedded fixing device with horizontal fixing components according to any one of claims 1 to 5, characterized in that: the pressure plate is provided with round holes for the screw rods to penetrate And the oblong hole, the round hole and the oblong hole are respectively arranged on both sides of the cantilevered steel beam, the round hole and the screw rod are tightly fitted, and the length direction of the oblong hole is perpendicular to the side of the cantilevered steel beam. 7. The detachable pre-embedded fixing device for cantilevered steel beams with horizontal fixing components according to any one of claims 1 to 5, characterized in that: the bottom end of the cantilevered steel beams and the concrete structure Pads are provided with backing plates. 8. The detachable cantilever steel beam pre-embedded fixing device with horizontal fixing components according to any one of claims 1 to 5, characterized in that: at least two sleeves are fixed on the bottom plate, each set The pipes are arranged on both sides of the cantilevered steel beams, and both protrude upwards from the concrete structure, and the screws are inserted into the casings one by one.