Cantilever I-shaped steel fixing device

Abstract

The utility model relates to the technical field of cantilever type scaffold I-shaped steel fixing devices, and discloses a cantilever I-shaped steel fixing device which comprises a U-shaped ring, a pi-shaped steel pressing plate and a fastener. The closed end of the U-shaped ring is pre-buried in a cast-in-place concrete floor, the open end of the U-shaped ring is located above the cast-in-place concrete floor, the I-shaped steel is pressed in the opening of the U-shaped ring through the pi-shaped steel pressing plate, and meanwhile the open end of the U-shaped ring penetrates through a steel plate at the top end of the pi-shaped steel pressing plate and is fixed through a fastener. A bottom end lug plate of the pi-shaped steel pressing plate is located on the upper surface of the cast-in-place concrete floor and makes contact with the U-shaped ring. According to the utility model, the problem that the overhanging I-shaped steel is easy to loosen and deviate is solved, and the firmness of the I-shaped steel is improved; the mounting and dismounting are convenient, and the continuous usability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cantilever scaffolding I-beam fixing devices, in particular to a cantilever I-beam fixing device. Background Art

[0002] In building construction, most of the time, I-beam cantilever scaffolding is required. During the cantilever frame construction, the U-shaped ring steel bar is embedded in the floor slab before pouring concrete. After pouring, the I-beam cantilever beam is installed, the I-beam is inserted into the pressure ring, and the steel plate passing through the U-shaped ring steel bar is used to press the I-beam, and the wooden wedge is inserted between the U-shaped ring steel bar and the I-beam to fix it. Sometimes, multiple wooden wedges are needed to tighten it or weld steel bars between the U-shaped ring steel bar and the I-beam. In the existing construction, there is a gap between the wooden wedge and the I-beam, and the connection is not tight. The I-beam is easy to loosen or deviate in the U-shaped ring. The wooden wedge used for fixing is easy to be removed manually, which seriously damages the overall stability of the cantilever scaffolding and is very unsafe; it is difficult to disassemble when fixed by steel bar welding, and the reuse rate is low. Utility Model Content

[0003] In view of this, the utility model provides a cantilever I-beam fixing device, which solves the problem in the prior art that the cantilever I-beam is easily loosened and deviated, and improves the firmness of the I-beam; the device is easy to install and disassemble, and improves continuous usability.

[0004] The utility model is realized through the following technical scheme: a cantilever I-beam fixing device, comprising a U-shaped ring, a π-shaped steel pressure plate and a fastener; the closed end of the U-shaped ring is pre-buried in a cast-in-place concrete floor slab, the open end of the U-shaped ring is located above the cast-in-place concrete floor slab, the π-shaped steel pressure plate presses the I-beam into the opening of the U-shaped ring, and at the same time, the open end of the U-shaped ring passes through the top steel plate of the π-shaped steel pressure plate and is fixed by a fastener, and the bottom ear plate of the π-shaped steel pressure plate is located on the upper surface of the cast-in-place concrete floor slab and contacts the U-shaped ring.

[0005] Furthermore, the open end of the U-shaped ring passes through the bottom ear plate and the top steel plate of the π-shaped steel pressure plate in sequence.

[0006] Furthermore, the bottom ear plate of the π-shaped steel pressure plate is provided with two through holes II, and the top steel plate of the π-shaped steel pressure plate is provided with two through holes I. The spacing between the two through holes I and the spacing between the two through holes II are consistent with the width of the U-shaped ring. The U-shaped ring passes through the bottom ear plate of the π-shaped steel pressure plate through the through hole II; and passes through the top steel plate of the π-shaped steel pressure plate through the through hole I.

[0007] Furthermore, the vertical steel plate spacing of the π-shaped steel pressure plate is consistent with the width of the I-beam; the apertures of the through holes I and II are the same as the diameter of the U-shaped ring.

[0008] Furthermore, it also includes reinforcing ribs, and two reinforcing ribs are respectively arranged at the inner corners of the closed end of the U-shaped ring.

[0009] Furthermore, the fastener is a bolt, and the vertical portion of the open end of the U-shaped ring is provided with an external thread and extends from top to bottom to the top of the cast-in-place concrete floor.

[0010] Furthermore, it also includes a galvanized gasket, which is placed between the top of the π-shaped steel pressure plate and the nut.

[0011] Furthermore, the U-shaped ring has a diameter of 18 mm and a thread length of 200 mm.

[0012] Furthermore, the nut is a double nut.

[0013] Compared with the existing technology, the beneficial effects of the utility model are:

[0014] 1. The π-shaped steel pressure plate of the utility model presses the I-beam into the opening of the U-shaped ring. The opening end of the U-shaped ring passes through the top steel plate of the π-shaped steel pressure plate and is fixed by fasteners, which limits the vertical displacement of the I-beam, solves the problem of the cantilevered I-beam being easily loosened and offset in the prior art, and improves the firmness of the I-beam. The device is easy to install and disassemble, and improves continuous use.

[0015] 2. The open end of the U-shaped ring of the utility model passes through the bottom ear plate of the π-shaped steel pressure plate, thereby limiting the horizontal displacement of the I-shaped steel.

[0016] 3. The spacing between the through holes of the bottom ear plate and the top steel plate of the π-shaped steel pressure plate of the utility model is consistent with the width of the U-shaped ring, ensuring that the I-beam is fixed in the π-shaped steel pressure plate without loosening.

[0017] 4. The diameter of the through holes of the bottom ear plate and the top steel plate of the π-shaped steel pressure plate of the utility model is consistent with the diameter of the U-shaped ring, and the spacing between the vertical steel plates on both sides of the π-shaped steel pressure plate is consistent with the width of the I-beam, which can prevent the I-beam from deflecting.

[0018] 5. The two reinforcing ribs of the utility model are placed at the corners of the closed end of the U-shaped ring to enhance the force bearing capacity of the U-shaped ring, thereby increasing the stability of the I-beam.

[0019] 6. The bolts of the utility model cooperate with the external threads of the U-shaped ring to fix the π-shaped steel pressure plate, which is convenient for installation and disassembly, and the bolts and the π-shaped steel pressure plate can be reused to improve continuous use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the front view of the cantilever I-beam fixing device of the utility model.

[0021] Figure 2 It is the front view of the π-shaped steel pressure plate of the utility model.

[0022] Figure 3 It is a top view of the π-shaped steel pressure plate of the utility model.

[0023] Figure 4 It is a bottom view of the π-shaped steel pressure plate of the utility model.

[0024] Among them, 1-U-shaped ring, 2-π-shaped steel pressure plate, 3-nut, 4-I-beam, 5-cast-in-place concrete floor, 6-reinforcement ribs, 2-1-through hole I, 2-2-through hole II. 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 accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The utility model provides a cantilever I-beam fixing device, such as Figure 1 As shown, the cantilever I-beam fixing device includes a U-shaped ring 1, a π-shaped steel pressure plate 2 and a fastener. It should be noted that the U-shaped ring 1 in this article refers to the cantilever frame embedded U-shaped ring, which is referred to as the U-shaped ring 1 in the following text. Figure 2 As shown, the π-shaped steel pressure plate 2 is integrally formed by an upper steel plate and a lower "J"-shaped steel plate, and is made of a 100mm wide 10mm thick steel plate. The upper steel plate is made first, and then the lower "J"-shaped steel pressure plate is made. The upper steel plate and the lower "J"-shaped steel plate are stacked together and fully welded on the side.

[0027] like Figure 3 , 4 As shown, the top steel plate of the π-shaped steel pressure plate 2 is provided with two through holes Ⅰ2-1, and the bottom ear plate of the π-shaped steel pressure plate 2 is provided with two through holes Ⅱ2-2. The spacing between the two through holes Ⅰ2-1 and the spacing between the two through holes Ⅱ2-2 are consistent with the width of the U-shaped ring 1. In this embodiment, the U-shaped ring 1 uses an 18U-shaped ring, that is, a U-shaped ring made of round steel with a diameter of 18 mm. The diameter refers to the diameter of the material for making the U-shaped ring; preferably, the inner diameter of the through hole Ⅰ2-1 and the through hole Ⅱ2-2 is 18 mm.

[0028] Before pouring concrete on the concrete slab, the closed end of the U-shaped ring 1 is embedded in the cast-in-place concrete slab 5, and the vertical part of the open end of the U-shaped ring 1 is provided with an external thread and extends from top to bottom to the top of the cast-in-place concrete slab 5, and the thread length is 200mm. Preferably, two reinforcing ribs 6 are respectively placed at the inner corners of the closed end of the U-shaped ring 1; after the slab is poured with concrete, the I-beam 4 is placed in the open end of the U-shaped ring 1.

[0029] In this embodiment, the fastener is a nut 3. The U-shaped ring 1 passes through the bottom ear plate of the π-shaped steel plate 2 through the through hole II2-2, and the bottom ear plate of the π-shaped steel plate 2 is located on the upper surface of the cast-in-place concrete floor; then passes through the top steel plate of the π-shaped steel plate 2 through the through hole I2-1, and the top steel plate of the π-shaped steel plate 2 is placed on the top of the I-beam 4. The nut 3 is threadedly connected with the threaded end of the U-shaped ring 1 to fix the π-shaped steel plate 2 on the open end of the U-shaped ring 1, limiting the displacement of the I-beam 4 in the up and down and horizontal directions. As an improvement, a galvanized gasket 7 is placed between the top of the π-shaped steel plate 2 and the nut 3 and tightened, and the nut 3 can also use a double nut.

[0030] As a further improvement, the middle part of the π-shaped steel pressure plate 2, that is, the spacing between the vertical steel plates on both sides of the π-shaped steel pressure plate 2 can be consistent with the width of the I-beam 4. The purpose is to firmly clamp the I-beam 4 between the π-shaped steel pressure plate 2 so that the I-beam 4 will not loosen or deflect.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cantilever I-beam fixing device, characterized in that: It includes a U-shaped ring, a π-shaped steel pressure plate and fasteners; the closed end of the U-shaped ring is pre-buried in the cast-in-place concrete floor, the open end of the U-shaped ring is located above the cast-in-place concrete floor, the π-shaped steel pressure plate presses the I-beam into the opening of the U-shaped ring, and at the same time, the open end of the U-shaped ring passes through the top steel plate of the π-shaped steel pressure plate and is fixed by fasteners, and the bottom ear plate of the π-shaped steel pressure plate is located on the upper surface of the cast-in-place concrete floor and contacts the U-shaped ring.

2. The cantilever I-beam fixing device according to claim 1, characterized in that: The open end of the U-shaped ring passes through the bottom ear plate and the top steel plate of the π-shaped steel pressure plate in sequence.

3. The cantilever I-beam fixing device according to claim 2, characterized in that: The bottom ear plate of the π-shaped steel pressure plate is provided with two through holes II, and the top steel plate of the π-shaped steel pressure plate is provided with two through holes I. The spacing between the two through holes I and the spacing between the two through holes II are consistent with the width of the U-shaped ring. The U-shaped ring passes through the bottom ear plate of the π-shaped steel pressure plate through the through hole II; and passes through the top steel plate of the π-shaped steel pressure plate through the through hole I.

4. The cantilever I-beam fixing device according to claim 3, characterized in that: The vertical steel plate spacing of the π-shaped steel pressure plate is consistent with the width of the I-beam; the apertures of the through holes I and II are the same as the diameter of the U-shaped ring.

5. The cantilever I-beam fixing device according to any one of claims 1 to 4, characterized in that: It also includes reinforcing ribs, and two reinforcing ribs are respectively arranged at the inner corners of the closed end of the U-shaped ring.

6. The cantilever I-beam fixing device according to any one of claims 1 to 4, characterized in that: The fastener is a nut, and the vertical portion of the open end of the U-shaped ring is provided with an external thread and extends from top to bottom to the top of the cast-in-place concrete floor slab.

7. The cantilever I-beam fixing device according to claim 6, characterized in that: It also includes a galvanized gasket, which is placed between the top of the π-shaped steel pressure plate and the nut.

8. The cantilever I-beam fixing device according to claim 6, characterized in that: The U-shaped ring has a diameter of 18 mm and a thread length of 200 mm.

9. The cantilever I-beam fixing device according to claim 6, characterized in that: The nut is a double nut.

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