Steel strand connector of telescopic reinforcement cage

Abstract

The utility model provides a steel strand connector of a telescopic reinforcement cage, which does not need to be prefabricated at the end part of a steel strand and can be used for directly connecting the steel strand of the telescopic reinforcement cage on a construction site. The steel strand connector comprises a female connector, a male connector and a wedge block, the wedge block is a long circular tube and comprises a middle cylindrical section and conical sections at the two ends of the cylindrical section, and the large ends of the conical sections are connected with the cylindrical section; long-strip-shaped notches are formed in the outer circumferential surfaces of the conical sections at the two ends in the generatrix direction of the conical sections; the female joint and the male joint are coaxially sleeved on the outer circumference of the wedge block, one ends of the female joint and the male joint are in butt joint, and the other ends of the female joint and the male joint are respectively matched with conical sections at two ends of the wedge block through inner conical surfaces.

Description

Technical Field

[0001] The utility model relates to a joint, in particular to a steel strand joint of a telescopic steel cage, belonging to the technical field of telescopic steel cage connection. Background Art

[0002] The telescopic steel cage is a commonly used steel processing product in structural engineering, which is used to reinforce beams, columns, walls and other parts in concrete structures. The telescopic steel cage includes a number of coaxially arranged annular stirrups evenly spaced along the axial direction and a number of steel strands as flexible vertical bars evenly spaced along the circumference of the annular stirrups.

[0003] At present, the telescopic steel cage needs to be extended on site to meet the needs of deeper cast-in-place piles; when extending, the connection of the steel strands of the two butted telescopic steel cages is mainly through the prefabricated joints at both ends, and the joints are pressed on the ends of the steel strands by hydraulic clamps. The workload of prefabricating joints at the ends of the steel strands is large, and they need to be prefabricated in the workshop in advance. Utility Model Content

[0004] In view of this, the utility model provides a steel strand joint of a telescopic steel cage, which does not need to be prefabricated at the end of the steel strand, and the steel strand can be directly connected at the construction site.

[0005] The technical solution of the utility model is: a steel strand joint of a telescopic steel cage, comprising: a female joint, a male joint and a wedge;

[0006] The wedge block is a long round tube, including a cylindrical section in the middle and tapered sections at both ends of the cylindrical section, wherein the large end of the tapered section is connected to the cylindrical section; the outer circumferential surfaces of the tapered sections at both ends are provided with long strip notches along the generatrix direction thereof;

[0007] The female joint and the male joint are coaxially sleeved on the outer circumference of the wedge block, one end of the female joint and the male joint are butted, and the other ends are matched with the tapered sections at both ends of the wedge block through inner tapered surfaces.

[0008] Preferably, the butt joint end of the male connector is a screw rod with external threads, and the butt joint end of the female connector is a screw hole with internal threads, and the coaxial butt joint of the female connector and the male connector is achieved through the cooperation of the screw rod and the screw hole.

[0009] Preferably, the outer ends of the male connector and the female connector are both hexagonal heads.

[0010] Preferably, operating holes are radially arranged on the outer circumferential surfaces of the outer ends of the male connector and the female connector.

[0011] Preferably, four long strip-shaped notches are evenly spaced along the circumferential direction on the outer circumferential surfaces of the tapered sections at both ends of the wedge.

[0012] Beneficial effects:

[0013] (1) The steel strand joint of the telescopic steel cage of the utility model does not need to be prefabricated at the end of the steel strand. The steel strands of two telescopic steel cages can be directly connected at the construction site. The contraction of the tapered sections at both ends of the long round tubular wedge can firmly press the steel strand, thereby ensuring a reliable connection between the two sections of the steel strand.

[0014] (2) In the steel strand joint of the telescopic steel cage of the utility model, the outer ends of the male joint and the female joint are provided with hexagonal heads, which are convenient for tightening with a wrench.

[0015] (3) In the steel strand joint of the telescopic steel cage of the utility model, operation holes are radially opened at the outer ends of the male joint and the female joint. When there is no tool for tightening, a long round rod can be inserted into the operation hole to make the male and female joints rotate relative to each other to achieve tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a steel strand joint of a telescopic steel cage of the utility model;

[0017] Figure 2 It is a cross-sectional view of a steel strand joint of a telescopic steel cage of the utility model;

[0018] Figure 3 It is a left side view of the steel strand joint of the telescopic steel cage of the utility model;

[0019] Figure 4 is a schematic diagram of the structure of the wedge;

[0020] Figure 5 This is the left side view of the wedge.

[0021] Among them: 1-steel strand; 2-female connector; 3-wedge block; 4-male connector; 5-operating hole; 6-slot; 7-hexagonal head. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] This embodiment provides a steel strand joint of a telescopic steel cage. It is not necessary to prefabricate the steel strand ends of the telescopic steel cage, and the steel strands can be directly connected at the construction site.

[0024] like Figure 1-Figure 3 As shown, the steel strand joint comprises: a female joint 2, a male joint 4 and a wedge 3; Figure 4 and Figure 5As shown, the wedge block 3 is a long round tube with a taper at both ends, that is, the wedge block 3 includes a cylindrical section in the middle and tapered sections at both ends of the cylindrical section (where the large end of the tapered section is connected to the cylindrical section); the outer circumferential surfaces of the tapered sections at both ends have long strip notches 6 of a set length along the generatrix direction thereof. As an example, the outer circumferential surface of the tapered section has four long strip notches 6 evenly spaced in the circumferential direction, and the length of the notches 6 is less than the length of the tapered section. Due to the provision of the notches 6, the tapered sections at both ends of the wedge block 6 can achieve radial contraction.

[0025] The male connector 4 and the female connector 2 are also long round tubes, one end of the male connector 4 is a screw with external threads, and one end of the female connector 2 is a screw hole with internal threads, thereby realizing the coaxial threaded tightening docking of the male connector 4 and the female connector 2; the docking part of the male connector 4 and the female connector 2 corresponds to the position of the middle cylindrical section of the wedge block 3; the inner circumferential surface of the other end of the male connector 4 and the female connector 2 (that is, the part other than the docking part, which is called the outer end) is a conical surface, and the taper direction is outward contraction, that is, the inner circumferential surface of the other end of the male connector 4 and the female connector 2 is a conical surface that matches the conical sections at both ends of the wedge block 3, and is respectively mounted on the outside of the conical sections at both ends of the wedge block 3. The ends of the outer ends of the male connector 4 and the female connector 2 are hexagonal heads 7 to facilitate wrench clamping; at the same time, two operating holes 5 are symmetrically arranged along the radial direction on the hexagonal head 7 to facilitate the insertion of the long bar.

[0026] The working principle of the steel strand joint of the telescopic steel cage is as follows: initially, the male joint 4 and the female joint 2 are respectively mounted on the tapered sections at both ends of the wedge block 3, and the joints of the male joint 4 and the female joint 2 are not tightened; when the steel strand 1 of the telescopic steel cage as the flexible vertical reinforcement needs to be connected, the two steel strands 1 are respectively inserted into the wedge block 3 at both ends, and then the joints of the male joint 4 and the female joint 2 are tightened, and the tapered sections of the inner circumference of the male joint 4 and the female joint 2 compress the tapered sections at both ends of the wedge block 3, so that the tapered sections at both ends of the wedge block 3 shrink, thereby tightly compressing the steel strand 1 and realizing the connection of the steel strand 1. The tightening of the joints of the male joint 4 and the female joint 2 is realized by clamping the hexagonal head 7 at the end thereof with a wrench or by inserting a long round steel rod into the operating hole 5 at the end thereof, and the two wrenches or the two long round steel rods are rotated in relative directions to realize the tightening.

[0027] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A steel strand joint of a telescopic steel cage, characterized in that: include: A female connector (2), a male connector (4) and a wedge (3); The wedge block (3) is a long round tube, comprising a cylindrical section in the middle and conical sections at both ends of the cylindrical section, wherein the large end of the conical section is connected to the cylindrical section; the outer circumferential surfaces of the conical sections at both ends are provided with long strip-shaped notches along the generatrix direction thereof; The female connector (2) and the male connector (4) are coaxially mounted on the outer circumference of the wedge block (3); one end of the female connector (2) and the male connector (4) are butted against each other, and the other ends are matched with the conical sections at both ends of the wedge block (3) through inner conical surfaces.

2. The steel strand joint of the telescopic steel cage according to claim 1, characterized in that: The butt joint end of the male connector (4) is a screw rod with external threads, and the butt joint end of the female connector is a screw hole with internal threads. The coaxial butt joint of the female connector (2) and the male connector (4) is achieved through the cooperation of the screw rod and the screw hole.

3. The steel strand joint of the telescopic steel cage according to claim 1, characterized in that: The outer ends of the male connector (4) and the female connector (2) are both hexagonal heads (7).

4. The steel strand joint of the telescopic steel cage according to claim 1, characterized in that: An operating hole (5) is radially arranged on the outer circumferential surface of the outer ends of the male connector (4) and the female connector (2).

5. The steel strand joint of the telescopic steel cage according to any one of claims 1 to 4, characterized in that: Four long strip-shaped notches (6) are evenly spaced along the circumferential direction on the outer circumferential surfaces of the tapered sections at both ends of the wedge (3).

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