Steel bar connecting sleeve for connecting formworks and formwork structure

Abstract

The utility model provides a reinforcing steel bar connecting sleeve for connecting a template and a template structure. The reinforcing steel bar connecting sleeve comprises a sleeve body with a threaded hole, a template fixing plate and a sleeve protection cover, the length of the sleeve body is larger than that of a steel bar wire head. One end of the sleeve body is fixedly connected with the upper surface of the formwork fixing plate, a steel bar penetrating hole is formed in the position, right opposite to a threaded hole of the sleeve body, of the formwork fixing plate, and the diameter of the steel bar penetrating hole is not smaller than that of the threaded hole. The sleeve protection cover is buckled in the steel bar through hole; a plurality of first bolt penetrating holes are evenly formed in the formwork fixing plate and surround the sleeve body. According to the utility model, the deviation of the reinforcing steel bars required to be used in secondary pouring due to vibration of concrete in the primary pouring process can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building construction, concretely relates to a reinforcing steel bar connecting sleeve for connecting formwork and formwork structure. BACKGROUND

[0002] In today's field of building construction, especially in the complex structure construction occasion needing secondary pouring, the concrete pouring quality and the reinforcing steel bar positioning precision are closely related to the success or failure of the whole building project. In the primary pouring link, the construction personnel usually fixes the reinforcing steel bar by using the traditional binding mode, and then uses a vibrating rod to strongly vibrate in the concrete pouring stage to make the concrete uniform and dense. At this time, the reinforcing steel bar that has been bound is subjected to the strong vibration from the concrete flow impact and the vibrating equipment transmission, and is extremely easy to be loosened and displaced in the formwork. Moreover, the reinforcing steel bars needing connection in the subsequent secondary pouring are more easily subjected to the extrusion and vibration interference of the surrounding concrete due to the lack of reliable fixing measures, and serious deviation phenomenon occurs, which is not conducive to the secondary pouring.

[0003] When the reinforcing steel bar deviation problem occurs, the workers need to spend a lot of time and effort to manually correct the reinforcing steel bar position, which undoubtedly prolongs the construction period, increases the labor cost investment, and causes adverse effects on the building construction quality and efficiency. SUMMARY

[0004] The utility model solves the technical problem in the prior art and provides a reinforcing steel bar connecting sleeve for connecting formwork and formwork structure to prevent the reinforcing steel bars used in secondary pouring from being deviated due to the concrete vibration in the primary pouring process.

[0005] To solve the above technical problems, the content of the utility model comprises:

[0006] A reinforcing steel bar connecting sleeve for connecting formwork comprises a sleeve body with a threaded hole, a formwork fixing plate and a sleeve protection cover; the length of the sleeve body is greater than the length of the reinforcing steel bar wire head; one end of the sleeve body is fixedly connected with the upper surface of the formwork fixing plate, a reinforcing steel bar perforation is formed in the position of the formwork fixing plate and opposite to the threaded hole of the sleeve body, and the diameter of the reinforcing steel bar perforation is not less than the diameter of the threaded hole; the sleeve protection cover is buckled in the reinforcing steel bar perforation; a plurality of first bolt perforations are uniformly formed in the formwork fixing plate and surround the sleeve body.

[0007] Further, the formwork fixing plate is a square plate, one end of the sleeve body is fixed at the center position of the upper surface of the square plate, and one first bolt perforation is formed at each corner of the square plate.

[0008] Further, a rectangular notch is formed in the middle of the sleeve protection cover.

[0009] Further, the front end of the sleeve protection cover has a threaded connector matched with the threaded hole.

[0010] Further, the rear end of the sleeve protection cover is in the shape of a circular truncated cone and protrudes from the lower surface of the formwork fixing plate.

[0011] Further, the sleeve body is in the shape of a circle or a regular polygon.

[0012] Further, the length of the sleeve body is twice the length of the steel wire head.

[0013] A formwork structure comprises a formwork, a plurality of central positioning holes are formed in the formwork, and a steel connecting sleeve for connecting the formwork is fixedly installed at each central positioning hole through a plurality of bolts; a plurality of second bolt through holes are formed in the formwork around each central positioning hole, and the plurality of second bolt through holes are arranged in one-to-one correspondence with a plurality of first bolt through holes on a corresponding formwork fixing plate, and each bolt passes through the first bolt through hole and the second bolt through hole in sequence from the upper surface side of the corresponding formwork fixing plate and is fixed through a nut.

[0014] Further, four central positioning holes are formed in the formwork in a square distribution.

[0015] The beneficial effects of the present application are as follows:

[0016] The sleeve body and the formwork fixing plate are fixed together, the formwork fixing plate can be fixed with the formwork, the steel bars for one-time pouring are screwed into the sleeve body during one-time pouring, the sleeve body and the steel bars are poured into the concrete, the sleeve protection cover of the sleeve body is removed during two-time pouring, the steel bars for two-time pouring are screwed in, and then two-time pouring is performed. Since the formwork, the formwork fixing plate and the sleeve body are fixed together during one-time pouring, the position of the sleeve body is stable during one-time pouring, and thus the precise positioning of the steel bars during two-time pouring is realized, the problem of steel bar deviation caused by concrete pouring vibration is fundamentally and effectively avoided, and the stability and reliability of the building structure are greatly improved. Moreover, no steel bar correction process is required before two-time pouring, only simple cleaning and screwing of the steel bars are required, the construction progress is greatly accelerated, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the steel connecting sleeve of the present application;

[0018] Figure 2 is a steel connecting schematic view of the steel connecting sleeve for one-time pouring;

[0019] Figure 3is a schematic view of the connection between the reinforcing steel connecting sleeve and the formwork during one-time pouring;

[0020] Figure 4 is Figure 3 is an enlarged view of part A in figure 1;

[0021] Figure 5 is a schematic view of one-time pouring;

[0022] Figure 6 is a schematic view of the concrete after the formwork and sleeve protective cover are removed after one-time pouring;

[0023] Figure 7 is Figure 6 is an enlarged view of part B in figure 2;

[0024] Figure 8 is a schematic view of the reinforcing steel connection before two-time pouring.

[0025] In the figure: 1, sleeve body, 2, formwork fixing plate, 3, sleeve protective cover, 4, formwork, 5, first bolt through hole. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Those skilled in the art should understand that the embodiments are only to help understand the present application and should not be regarded as a specific limitation on the present application.

[0027] As Figure 1 shown, the present application provides a reinforcing steel connecting sleeve for connecting formwork, comprising a sleeve body 1 with a threaded hole, a formwork fixing plate 2 and a sleeve protective cover 3; the length of the sleeve body 1 is greater than the length of the reinforcing steel wire head; one end of the sleeve body 1 is fixedly connected with the upper surface of the formwork fixing plate 2, a reinforcing steel through hole is formed on the formwork fixing plate 2 and opposite to the threaded hole of the sleeve body 1, and the diameter of the reinforcing steel through hole is not less than the diameter of the threaded hole; the sleeve protective cover 3 is buckled in the reinforcing steel through hole; a plurality of first bolt through holes 5 are uniformly formed on the formwork fixing plate 2 and around the sleeve body 1.

[0028] The internal thread of the sleeve body 1 is a straight thread or a tapered thread, and cooperates with the reinforcing steel wire head, for screwing into the reinforcing steel wire head from both ends, and connecting with the reinforcing steel during one-time pouring and two-time pouring respectively. The connection between the formwork fixing plate 2 and the sleeve body 1 can adopt welding or stamping connection.

[0029] The middle of the sleeve protection cover 3 is provided with a rectangular gap, through which the sleeve protection cover 3 can be conveniently taken off or screwed off by using a tool. The front end of the sleeve protection cover 3 is provided with a threaded connector matched with the threaded hole. When the sleeve protection cover 3 is buckled into the steel bar perforation, the threaded connector is screwed into the sleeve body 1, so that the outer end of the sleeve body 1 can be effectively protected during pouring to prevent sundries from entering the sleeve body 1. The rear end of the sleeve protection cover 3 is in the form of a circular truncated cone and protrudes from the lower surface of the formwork fixing plate 2, and the protruding part of the circular truncated cone can be inserted into the central positioning hole on the formwork 4 when the formwork fixing plate 2 and the formwork 4 are fixedly connected, so as to facilitate the fixed connection of the formwork fixing plate 2 and the formwork 4.

[0030] The outer shape of the sleeve body 1 is circular or regular polygonal, and the length of the sleeve body 1 is twice the length of the steel bar wire head, so that the two batches of steel bar wire heads can be completely screwed into the sleeve body 1 during primary pouring and secondary pouring, and more stable connection is achieved. The formwork fixing plate 2 is a square plate, one end of the sleeve body 1 is fixed at the center position of the upper surface of the square plate, and one first bolt hole 5 is formed at each corner of the square plate.

[0031] As shown in Figure 3 The utility model also provides a formwork structure, including formwork 4, formwork 4 is provided with a plurality of central positioning holes, and each central positioning hole is fixedly installed with a steel bar connecting sleeve for connecting formwork through a plurality of bolts, and a plurality of second bolt holes are formed around each central positioning hole on the formwork 4, and the plurality of second bolt holes are respectively arranged in one-to-one correspondence with the plurality of first bolt holes 5 on the corresponding formwork fixing plate 2. If the formwork fixing plate 2 is a square plate, four second bolt holes in square distribution are also formed around each central positioning hole.

[0032] Four central positioning holes in square distribution are usually formed on the formwork 4, that is, four steel bar connecting sleeves are needed.

[0033] The formwork fixing plate 2 of each steel bar connecting sleeve is fixedly connected with the formwork 4 through a plurality of bolts, and each bolt passes through the first bolt hole 5 and the second bolt hole from the upper surface side of the formwork fixing plate 2 in turn and is fixed through a nut, and the connecting mode is to facilitate the removal of the nut before secondary pouring, and then the formwork 4 is taken down.

[0034] The use method of the utility model:

[0035] 1) Prepare four steel bar connecting sleeves, first, screw the four steel bars used in one pouring into the four sleeve bodies 1 from the end away from the formwork fixing plate 2, then tightly buckle the sleeve protection cover 3 in the steel bar hole, block the end of the sleeve body 1 corresponding to the steel bar hole, prevent foreign matter from entering during the next pouring process, as shown in Figure 2 ; 2) Use bolts to fix the formwork 4 and the formwork fixing plate 2 together, four bolts are used to fix each square formwork fixing plate 2, and each bolt is inserted from the first bolt hole 5 on the formwork fixing plate 2 and extends from the corresponding second bolt hole on the formwork 4, and is connected with a nut and is tightly fixed, which ensures that the formwork 4 and the steel bar connecting sleeve are connected into a stable whole, as shown in Figure 3 、 4 ; 3) Pour the position where the concrete needs to be poured on the upper surface of the formwork 4, during the vibration process using the vibration equipment, the formwork 4, the steel bar connecting sleeve and the steel bar can withstand the large vibration force and are not easy to displace, as shown in Figure 5 ; 4) After one pouring is completed, the concrete is cured to a certain strength, the nut exposed outside is unscrewed, then the formwork 4 is removed, and the sleeve protection cover 3 is removed, as shown in Figure 6 、 7 ; 5) Screw the four steel bars used in the second pouring into the sleeve body 1, as shown in Figure 8 , since the sleeve body 1 remains stable during the first pouring, the accurate positioning of the four steel bars is also easy to achieve at this time, so that the construction progress and construction quality of the second pouring can be improved.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A connecting sleeve for connecting reinforcing bars in formwork, characterized in that, The sleeve body (1) includes a threaded hole, a template fixing plate (2), and a sleeve protective cover (3); the length of the sleeve body (1) is greater than the length of the rebar thread; one end of the sleeve body (1) is fixedly connected to the upper surface of the template fixing plate (2); a rebar through hole is provided on the template fixing plate (2) at the position opposite to the threaded hole of the sleeve body (1), and the diameter of the rebar through hole is not less than the diameter of the threaded hole; the sleeve protective cover (3) is fastened in the rebar through hole; a plurality of first bolt through holes (5) are evenly provided on the template fixing plate (2) around the sleeve body (1).

2. A rebar connecting sleeve for connecting formwork according to claim 1, characterized in that, The template fixing plate (2) is a square plate. One end of the sleeve body (1) is fixed at the center of the upper surface of the square plate, and a first bolt through hole (5) is opened at each of the four corners of the square plate.

3. A rebar connecting sleeve for connecting formwork according to claim 1, characterized in that, The sleeve protective cover (3) has a rectangular notch in the middle.

4. A rebar connecting sleeve for connecting formwork according to claim 1, characterized in that, The front end of the sleeve protective cover (3) has a threaded connector that is adapted to the threaded hole.

5. A rebar connecting sleeve for connecting formwork according to claim 1, characterized in that, The rear end of the sleeve protective cover (3) is frustum-shaped and protrudes from the lower surface of the template fixing plate (2).

6. A rebar connecting sleeve for connecting formwork according to claim 1, characterized in that, The sleeve body (1) has a circular or regular polygonal shape.

7. A rebar connecting sleeve for connecting formwork according to claim 1, characterized in that, The length of the sleeve body (1) is twice the length of the steel wire end.

8. A template structure, comprising a template (4); characterized in that, The template (4) has multiple central positioning holes, and a steel bar connecting sleeve for connecting the template as described in any one of claims 1-6 is fixedly installed at each central positioning hole by multiple bolts; the template (4) has multiple second bolt holes around each central positioning hole, and these multiple second bolt holes are respectively set one-to-one with multiple first bolt holes (5) on the corresponding template fixing plate (2), and each bolt passes through the first bolt hole (5) and the second bolt hole sequentially from one side of the upper surface of the corresponding template fixing plate (2) and is then fixed by a nut.

9. A template structure according to claim 8, characterized in that, The template (4) has four central positioning holes arranged in a square.

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