阅读说明：本技术 自动对位的精轧螺纹钢夹片 (Automatic alignment finish rolling deformed steel bar clamping piece ) 是由 李建强 杨帆 周宽 郑忠民 邓国泉 于 2019-10-11 设计创作，主要内容包括：一种自动对位的精轧螺纹钢夹片,包括至少三片夹片体拼接构成,夹片体内壁为与精轧螺纹钢外壁的螺纹筋相配合的螺纹,使得夹片体围成夹片时,夹片的内孔的螺纹与精轧螺纹钢外壁的螺纹筋构成螺纹连接结构,每片夹片体的接合处为波形接合部的结构,形成波形接合。其优点是利用夹片体内壁开的螺纹与精轧螺纹钢的螺纹筋相配合,形成对精轧螺纹钢的夹持；利用夹片体边缘的波形接合面,使得夹片在松开、夹紧过程中,自动找到夹片的正常夹持位置,不会发生夹片的错位,便于张拉时夹紧及张拉后退锚；夹片制作成楔形结构,便于自动楔紧锚固；夹片制作成台阶结构,便于自安装紧弹簧。(The utility model provides an automatic fine rolling screw-thread steel clamping piece of counterpointing, includes that three at least clamping pieces body concatenations constitute, and the internal wall of clamping piece is the screw thread that cooperates with the screw thread muscle of fine rolling screw-thread steel outer wall for when the clamping piece body encloses into the clamping piece, the screw thread of the hole of clamping piece and the screw thread muscle of fine rolling screw-thread steel outer wall constitute threaded connection structure, and the junction of every clamping piece body is the structure of wave form junction, forms the wave form joint. The clamping device has the advantages that the threads formed on the inner wall of the clamping piece body are matched with the thread ribs of the finish-rolled deformed steel bar to form clamping of the finish-rolled deformed steel bar; by utilizing the waveform joint surface at the edge of the clamping piece body, the normal clamping position of the clamping piece is automatically found in the loosening and clamping processes of the clamping piece, the dislocation of the clamping piece is avoided, and the clamping and the tensioning backing anchor are convenient to clamp in tensioning; the clamping piece is made into a wedge-shaped structure, so that automatic wedging and anchoring are facilitated; the clamping piece is made into a step structure, so that the self-installation of the spring is facilitated.)

1. The utility model provides an automatic finish rolling screw-thread steel clamping piece of counterpointing, includes that three at least clamping pieces bodies (2) splice and constitute, its characterized in that: the outer wall of each clip body (2) is wedge-shaped, the joint of each clip body (2) is in a wave joint or fold-line joint (4) structure, and adjacent clip bodies are connected to form wave joint or fold-line joint.

2. The self-aligning finish rolled deformed steel bar clip of claim 1, further comprising: the inner wall of the clamping piece body (2) is a thread (3) matched with the thread rib of the outer wall of the finish rolling deformed steel bar, so that when the clamping piece body (2) is enclosed into the clamping piece, the thread (3) of the inner hole of the clamping piece and the thread rib of the outer wall of the finish rolling deformed steel bar form a threaded connection structure.

3. The self-aligning finish rolled deformed steel bar clip according to claim 1 or 2, further comprising: the rear end of the clamping piece body (2) is of a step structure, and when the clamping piece body (2) encloses the clamping piece, a round step (1) is formed at the rear end of the clamping piece.

4. The finish rolled deformed steel bar clip according to claim 1 or 2, further comprising: the rear end of the clamping piece body (2) is a sunk platform, and when the clamping piece body (2) encloses the clamping piece, a sunk hole is formed at the rear end of the clamping piece.

5. The finish rolled deformed steel bar clip according to claim 1 or 2, further comprising: the rear end of the clamping piece body (2) is a conical sunk platform, and when the clamping piece body (2) encloses the clamping piece, a conical sunk hole is formed at the rear end of the clamping piece.

Technical Field

The invention relates to a steel clamping piece in prestress construction, in particular to a finish rolling deformed steel bar clamping piece capable of automatically aligning.

Background

At present, the steel clamping piece that adopts in the prestressing force construction, it forms to be the at least three clamping piece body joints, it has the tooth to open at the internal wall of clamping piece, when the inside centre gripping of clamping piece atress, the tooth interlock steel strand of clamping piece internal wall, implement the stretch-draw operation, the clamping piece of this kind of structure, only be applicable to the stretch-draw to steel strand, can not be used for carrying out the centre gripping to the finish rolling screw-thread steel, because the intensity of finish rolling screw-thread steel is big, and the hardness is high, and the outer wall is crude screw-thread steel, the unable centre gripping finish rolling screw-thread steel of traditional clamping piece.

Disclosure of Invention

The invention aims to provide a finish rolling deformed steel bar clamping piece for clamping the finish rolling deformed steel bar and realizing automatic alignment.

The solution of the invention is such that:

the utility model provides an automatic finish rolling screw-thread steel clamping piece of counterpointing, includes that at least three clamping piece bodies splice and constitute, and the outer wall of every clamping piece body is the wedge, and every clamping piece body junction is the structure of wave form joint portion, and adjacent clamping piece body is connected and is advanced to form the wave form joint.

The more specific technical scheme also comprises the following steps: the inner wall of the clamping piece body is a thread matched with the thread rib of the outer wall of the finish rolling deformed steel bar, so that when the clamping piece body is enclosed into a clamping piece, the thread of the inner hole of the clamping piece and the thread rib of the outer wall of the finish rolling deformed steel bar form a threaded connection structure.

Further: the rear end of the clamping piece body is of a step structure, and when the clamping piece body is enclosed into the clamping piece, a round step is formed at the rear end of the clamping piece.

Further: the rear end of the clamping piece body is a sinking platform, and a counter bore is formed at the rear end of the clamping piece when the clamping piece body is enclosed into the clamping piece.

Further: the rear end of the clamping piece body is a conical sinking platform, and when the clamping piece body is enclosed into a clamping piece, a conical counter bore is formed at the rear end of the clamping piece.

The invention has the advantages that:

1. the threads formed on the inner wall of the clip body are matched with the thread ribs of the finish-rolled deformed steel bar to form clamping of the finish-rolled deformed steel bar, so that the finish-rolled deformed steel bar cannot be damaged;

2. by utilizing the waveform joint surface or the fold-line joint surface at the edge of the clamping piece body, the clamping piece automatically finds the normal clamping position of the clamping piece in the loosening and clamping processes, the dislocation of the clamping piece can not occur, and the clamping and tensioning backing anchor is convenient during tensioning;

3. the clamping piece is made into a wedge-shaped structure, so that automatic wedging and anchoring are facilitated;

4. the clamping piece is manufactured into a step and a counter bore or is additionally provided with a guide sleeve structure, so that the self-installation of the tight spring is facilitated.

Drawings

Fig. 1 is a cross-sectional view of a joint 4 using a wave form according to the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Figure 4 is a schematic view of the present invention using a fold line joint 4.

Fig. 5 is a schematic view of a usage status of the first embodiment of the present invention.

Fig. 6 is a schematic view of a use state of the second embodiment of the present invention.

FIG. 7 is a schematic diagram of a third trapezoidal embodiment of the present invention in use.

Fig. 8 is a schematic view of the structure of clip body 2 in the structure shown in fig. 7.

Detailed Description

As shown in fig. 1, 2 and 3, the present embodiment includes a structure formed by splicing four clip bodies 2, the outer wall of each clip body 2 is wedge-shaped, the joint of each clip body is a wave joint or a fold-line joint 4, and a wave joint or a fold-line joint is formed when adjacent clip bodies are connected; the inner wall of the clamping piece body 2 is provided with threads 3 matched with the thread ribs on the outer wall of the finish rolling deformed steel bar, so that when the clamping piece body 2 is enclosed into a clamping piece, the threads 3 of the inner hole of the clamping piece and the thread ribs on the outer wall of the finish rolling deformed steel bar form a threaded connection structure; the clip body 2 is manufactured by uniformly processing four wave-shaped grooves on a circular clip blank to form four clip bodies 2 with wave-shaped joint parts or fold-line-shaped joint parts 4.

In the structure shown in fig. 1 and 3, a wave-shaped groove is adopted, so that wave-shaped joint is formed when four clamping pieces with wave-shaped joint parts 4 are connected.

In the structure shown in fig. 4, a fold line groove is used, so that a fold line-shaped joint is formed when the clamping pieces of the four fold line-shaped joint parts 4 are connected.

The rear end of the clip body 2 has the following embodiments:

the first embodiment is as follows:

as shown in fig. 1, 3 and 4, the rear end of the clip body 2 is a step structure, and when the clip body 2 encloses the clip, a circular step 1 is formed at the rear end of the clip.

When the anchor cup is used in the embodiment, the anchor cup 5 is of a structure with a taper hole, and the clamping piece body 2 is of a cone shape matched with the taper hole in a taper manner; one end of the jacking spring 6 is sleeved at the round step of the clamping piece to jack the clamping piece body 2, and the other end of the jacking spring jacks the gland 7.

In an initial state, the jacking spring 6 jacks the clamping piece body 2 to be matched with the wedge-shaped hole of the anchor cup 5, and the clamping piece body 2 clamps the finish-rolled deformed steel bar 8; when the clamping piece body 2 is not required to be wrapped by the finish rolling deformed steel bar 8 in a stretching or moving mode to a required position, the pressing device matched with the clamping piece body 2 pushes the anchor cup to move leftwards, the pressing cover 7 is driven to press the pressing spring 6, and the four clamping piece bodies 2 are loosened.

Example two:

as shown in fig. 4 and 6, the rear end of the clip body 2 is a sinking platform, when the clip body 2 encloses the clip, a counter bore 1-1 is formed at the rear end of the clip, one end of the jacking spring 6 is sleeved at the counter bore at the rear end of the clip to jack the clip body 2, and the other end jacks the gland 7.

Example three:

as shown in fig. 7 and 8, the rear end of the clip body 2 is a conical sunk platform, and when the clip body 2 encloses the clip, a conical sunk hole 1-2 is formed at the rear end of the clip.

When the clamping piece is used in the embodiment, the guide sleeve 9 needs to be connected to the rear end of the clamping piece, the front end of the guide sleeve 9 is conical and matched with the conical counter bore, the rear end of the guide sleeve is provided with a step, one end of the jacking spring 6 is sleeved at the step of the guide sleeve 9 and jacks the guide sleeve 9, and the other end of the jacking spring jacks the gland 7.