CN2305450Y - Anchor work clip sheet - Google Patents

Abstract

The utility model relates to a working clip slice which is of a circular table shape and a two-slice and four-open type. The utility model is provided with a reverse tooth-shaped screw thread on the surface having contact with a steel strand and is provided with an elastic groove. The utility model is characterized in that the position of an inner hole of the small end of the utility model is provided with a back taper, the length L1 of the back taper is within 7 mm to 10 mm, the taper * of the back taper is equal to 1: 10, the outer diameter D1 of the big end of the utility model is within 30 mm to 35 mm, the major diameter D2 of the tooth shape is within 17.85 mm to 18.45 mm, the root diameter of the tooth shape is within 16.8 mm to 17.4 mm, and the length L2 of the utility model is within 47 mm to 53 mm. The utility model has the advantages of less damage of steel strand, high anchoring efficiency and good permanence and reliability.

Description

The ground tackle work clip sheet

The utility model relates to the OVM ground tackle work clip sheet that a kind of building operations is used.

In the existing OVM work ground tackle, work clip sheet is generally truncated cone-shaped, two four open types, and itself and steel hinge line contact surface have pawl shape screw thread, have elastic groove on the intermediate plate.This kind ground tackle work clip sheet is because the tooth distance of thread, the tooth height, the inner hole structure shape at intermediate plate small end place, intermediate plate external diameter equidimension unreasonable, cause the anchoring property of ground tackle assembly desirable not enough, anchorage loss is bigger, the stress of intermediate plate small end place prestressing force steel hinge line is concentrated, ground tackle strengthens the degree of injury of steel hinge line, the anchoring efficient of ground tackle assembly does not reach the requirement of related standards, particularly existing work ground tackle can only the anchoring diameter be Φ 12.7mm, Φ 12.9mm, Φ 15.2mm, the prestressing force steel hinge line of Φ 15.7mm, can't with diameter the supporting clamping of steel hinge line of Φ 17.8mm, and along with the continuous development of prestressing technique, thick diameter, high strength, the steel hinge line of big specification will become the developing direction of prestressing force steel hinge line, in the coming years, diameter is that the steel hinge line of Φ 17.8mm will be widely used.

The purpose of this utility model is to provide a kind of and can be reliably Φ 17.8mm steel hinge line is carried out that anchoring, ground tackle are little to the degree of injury of steel hinge line, anchoring efficient height, saves the OVM ground tackle work clip sheet of steel.

For reaching above-mentioned purpose, the ground tackle work clip sheet of the utility model adopts structure to be: truncated cone-shaped, two four open types, and itself and steel hinge line contact surface have pawl shape screw thread, have elastic groove on the intermediate plate, small end endoporus place at intermediate plate has a back taper, and back taper length L 1 is 7-10mm, the back taper tapering Be 1: 10, increase footpath at the bottom of the big footpath of thread form of work clip sheet and the thread form as far as possible, reduce pitch, increase number of effective actual teeth, suitably strengthen big end external diameter of work clip sheet and intermediate plate length.Through repetition test, the big end outer diameter D 1 of the work anchor clipper of the utility model is Φ 30-35mm, the big footpath D2 of thread form is Φ 17.85-18.45, footpath D3 is Φ 16.8-17.4mm at the bottom of the thread form, and intermediate plate length L 2 is 47-53mm, and its optimum size is: back taper length L 1 is 8mm, intermediate plate length L 2 is 50mm, big end outer diameter D 1 is Φ 32.8mm, and the big footpath D2 of thread form is Φ 18.15mm, and footpath D3 is Φ 17.1mm at the bottom of the thread form.

Owing to adopt said structure, the advantage that the OVM ground tackle work clip sheet of the utility model has anchorage reliability height, permanent good, little to the degree of injury of steel hinge line, anchoring efficient height, saves steel.

OVM work ground tackle is the tight power clamping steel hinge line of carving that utilizes its work clip sheet and work anchor slab, forms an anchoring unit.Put then when stretch-draw jack pair steel hinge line stress application and to open, the opposite force that intermediate plate is promptly produced by steel hinge line is brought in the bellmouth of anchor slab, during beginning, the interlock of intermediate plate and steel hinge line is not dark, the retraction speed of steel hinge line and intermediate plate is inconsistent, after being snapped to certain degree of depth, work clip sheet forms the anchoring unit in steel hinge line enters the bellmouth of work anchor slab.By anchor plate and anchor lower device thereof prestressing force is delivered to the inside of member, forms permanent prestressing force.Therefore shape, the size of work clip sheet are most important.The OVM ground tackle work clip sheet of the utility model is designed to a back taper shape at small end endoporus place, help the stress diffusion at intermediate plate small end place, eliminate the stress at intermediate plate small end place and concentrate, certainly, the tapering of back taper is excessive, perhaps the length of back taper is long, intermediate plate is reduced the occlusal contact area of steel hinge line, influence the gripping performance of intermediate plate, through experiment repeatedly, the utility model work clip sheet back taper tapering is 1: 10, and the length L of back taper is that 7-10mm is a kind of optimal selection.Increasing along with the steel hinge line diameter, under the constant situation of its stretch-draw intensity, tonne obviously increase of bundle power, want and to carry out reliable anchoring to it, footpath and big external diameter and the clamping length held at the bottom of the thread form of at first necessary increase work clip sheet, to prevent the undesired destruction at work clip sheet place, the reliability of maintenance ground tackle and permanent; But the intermediate plate external diameter is excessive, and this intermediate plate is being heat-treated when modified, and inside metallographic does not reach requirement, does not reach modified purpose, simultaneously, cause intermediate plate rigidity too big, be unfavorable for the interlock of intermediate plate and steel hinge line, influence the follow-up of intermediate plate, intermediate plate is long, excessive, also will increase manufacturing cost.Through experimental verification repeatedly, the work clip sheet of the utility model selects its big end outer diameter D 1 to be Φ 30-35mm, the big footpath D2 of thread form be at the bottom of the Φ 17.85-18.45mm thread form footpath D3 be Φ 16.8-17.4mm simultaneously, reduce the thread form height, reduce pitch, increase number of effective actual teeth, increased effective occlusal contact area of intermediate plate and steel hinge line, reduced damage, reached and both improved anchoring efficient, increased anchorage reliability and permanent, the purpose of saving steel again steel hinge line.Below, the architectural feature to the OVM ground tackle work clip sheet of the utility model is described further in conjunction with the accompanying drawings and embodiments.

Fig. 1: ground tackle work clip sheet structural representation

The A of Fig. 2: Fig. 1 is to view

The B place partial enlarged drawing of Fig. 3: Fig. 1

Embodiment one:

The ground tackle work clip sheet structure of the utility model as shown in Figure 1, this intermediate plate is two four open types, and truncated cone-shaped has the longitudinal elasticity groove on it, have pawl shape screw thread on intermediate plate and the steel hinge line contact surface, footpath D3 is Φ 16.8-17.4mm at the bottom of the form of thread, and the big footpath D2 of thread form is Φ 17.85-18.45mm, and the big end outer diameter D 1 of intermediate plate is Φ 30-35mm, tooth is apart from 1.25mm, intermediate plate total length L 2 is 47-53mm, and intermediate plate small end endoporus place has a back taper, the back taper tapering

=1: 10, back taper length L 1 is 8mm, the terminal chamfering R=5 of back taper.

Embodiment two

As a kind of conversion of the utility model embodiment one, the big end outer diameter D 1 of described intermediate plate is Φ 32.8mm, and the big footpath D2 of thread form is Φ 18.15mm, and footpath D3 is Φ 17.1mm at the bottom of the thread form, and intermediate plate length L 2 is 50mm, and all the other structures are with embodiment one.

Claims (3)

1, a kind of ground tackle work clip sheet, truncated cone-shaped, two four open types, itself and steel hinge line contact surface have pawl shape screw thread, have elastic groove on the intermediate plate, it is characterized in that: the small end endoporus place of described intermediate plate has a back taper, and back taper length (L1) is 7-10mm, the back taper tapering It is 1: 10.

2, ground tackle work clip sheet according to claim 1, it is characterized in that: the big end external diameter of described intermediate plate (D1) is Φ 30-35mm, the big footpath of thread form (D2) is Φ 17.85-18.45mm, and footpath (D3) is Φ 16.8-17.4mm at the bottom of the thread form, and intermediate plate length (L2) is 47-53mm.

3, as the ground tackle work clip sheet as described in the claim 1,2, it is characterized in that: the optimum size of described intermediate plate is: back taper length (L1) is 8mm, intermediate plate length (L2) is 50mm, big end external diameter (D1) is Φ 32.8mm, the big footpath of thread form (D2) is Φ 18.15mm, and footpath (D3) is Φ 17.1mm at the bottom of the thread form.

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