CN2447466Y

CN2447466Y - Strand bundle tractor

Info

Publication number: CN2447466Y
Application number: CN 00230776
Authority: CN
Inventors: 李祥恩; 杨露
Original assignee: LI XIANG'EN
Current assignee: LI XIANG'EN
Priority date: 2000-08-31
Filing date: 2000-08-31
Publication date: 2001-09-12
Anticipated expiration: 2010-08-31

Abstract

The utility model relates to a steel strand bundle tractor. The utility model is characterized in that the steel strand bundle tractor is composed of a guide nut, an inner core and an outer tooth hoop. The inner core is a metallic pipe piece. The outer surface of the front section of the inner core is threaded-column-shaped. The outer surface of the back section of the inner core is conical. Arc-shaped grooves are uniformly and longitudinally arranged on the outer surface of the back section of the inner core. A few longitudinal seams are arranged on the conical pipe wall. The guide nut is matched with the threaded-column-shaped surface at the front end of the metallic pipe piece. The outer surface of the guide nut is conical. The inner surface of the outer tooth hoop is conical and has the same conicity with the conical inner core. An inner arc-shaped groove which corresponds to the arc-shaped groove on the conical surface of the inner core is longitudinally arranged on the inner surface of the outer tooth hoop which is sheathed on the conical outer side of the back section of the inner core.

Description

Steel hinge line bundle tractor

The utility model relates to the drafting tool of steel bundle, and specifically a kind of steel hinge line bundle tractor is applied to the fastening and whole bundle traction of prestress steel hinge wire harness long in the civil works pre-stress construction.

The lashing of prestress steel hinge wire harness in the civil works pre-stress construction, present domestic achievement in research is a cable machine, cable machine commonly used is applicable to the post-stressed member that the steel hinge line bundle is short, adopts the single bundle that send, and has the cut-out function.When the steel hinge line bundle is longer, because steel hinge line is flexible the increasing with the increase of self length, cause cable machine can't send bundle, and the conventional lashing way of long bundle is the welding traction, promptly earlier manually penetrates a steel hinge line as draught line, and other steel hinge line and draught line connect by root bead, make it finally be arranged in approximate cylinder, and front end becomes certain taper, and welding finishes and uses mechanical traction, cuts the front end welding after finishing.This method is time-consuming when welding, consumes electric welding material and waste steel hinge line, and existence is sometimes welded improper and caused sealing-off, disconnected Shu Xianxiang in addition.

The purpose of this utility model is in order to solve the deficiency that the above-mentioned background technology exists, to propose a kind of steel hinge line bundle tractor, solving the problem of long steel hinge line bundle lashing difficulty, in the hope of reach the saving of labor, save time, the purpose of economical with materials.

Goal of the invention of the present utility model is achieved through the following technical solutions.A kind of steel hinge line bundle tractor, its special character is that it is made up of guide nut, inner core and outer tooth set, described inner core is a metal tube, its leading portion external surface is the screw thread column, the back segment external surface is coniform, vertically evenly be provided with arc groove along the back segment external surface, on this coniform tube wall, have several longitudinal joints; Described guide nut matches with the screw thread cylinder surface of metal tube, and its external surface is tapered; Described outer tooth set inner surface is and the identical inner conical of the coniform tapering of inner core back segment, vertically is provided with and the corresponding arc groove of the coniform arcing surface connected in star of inner core along outer tooth set inner surface, and outer tooth set is enclosed within the cone shape outside of inner core back segment.

In such scheme, one section appearance of described inner core leading portion head can be the screw thread taper, can have on this screw thread taper tube wall several with inner core back segment tube wall on several the staggered longitudinal joints of longitudinal joint, can be screwed with fastening nut on the screw thread taper surface of this inner core.

The utility model operating principle is: penetrate a guiding steel hinge line earlier at the inner core center as draught line, then being pulled between the arc groove and arc groove that steel hinge line is inserted in inner core and outer tooth set, by screwing guide nut gradually, make to produce between inner core and the outer tooth set and move to axial, and then inner core pushes respectively with outer tooth set, steel hinge line is drawn at the interlock center and be pulled steel hinge line, utilize extrusion friction power to come the fastening steel hinge line that is pulled, and guide whole lashing with guide nut.This inner core is with reference to the operating principle of intermediate plate in the prestressing technique.

The utility model is compared with traditional lashing technology, the time and labour saving, and can save steel hinge line.Nos guide nut in reeving in the past in addition is subjected to stopping of attachment in the duct (bellows inwall burr, cement paste etc.) easily, and the influence of duct distortion, thus prolongation lashing time or can't lashing.And guide nut can play certain guide effect, and bar is washed open.So effect of the present utility model is fairly obvious.

Below in conjunction with the accompanying drawing illustrated embodiment, describe the utility model in detail.

Fig. 1 is the structural representation of the utility model embodiment 1.

Fig. 2 is the B-B sectional view of Fig. 1.

Fig. 3 is an inner core B-B sectional view among Fig. 1.

Fig. 4 is that the tooth set B-B of figure China and foreign countries analyses and observe.

Fig. 5 is the structural representation of embodiment 2.

Fig. 6 is a C-C sectional view among Fig. 5.

Embodiment 1: with reference to Fig. 1, Fig. 2 and Fig. 3, the utility model mainly is made of inner core 1, outer tooth set 2 and guide nut 3, wherein inner core 1 is a steel pipe, the left-hand component at its external surface B-B place in Fig. 1 is the cylindrical thread shape, it is coniform that right-hand component is, vertically evenly be provided with eight arc grooves 4 along conical surface, the quantity of this arc groove 4 can be decided according to being pulled steel hinge line quantity.Have four longitudinal joints 5 on this coniform tube wall vertically equably, the length of these several longitudinal joints 5 suitably staggers, and coniform tube wall is divided into four parts, so that they can move clamping center traction steel hinge line to the center.Being covered with on the endoporus inwall of the coniform part of inner core 1 back segment has little tooth, does not draw among the figure, prevents that center traction steel hinge line from skidding in the endoporus of inner core.

Guide nut 3 partly matches with the cylindrical thread shape of inner core 1 leading portion, and its external surface is outer little interior big conical structure.

Outer tooth set 2 also is a steel pipe, its inner surface is and the identical inner conical of the coniform part tapering of inner core 1 back segment, referring to Fig. 4, and vertically be provided with and the coniform arcing surface connected in star 4 corresponding arc grooves 6 of inner core back segment along outer tooth set inner surface, so that trailed steel hinge line is put into respectively between every pair of recessed circular trough 4 and the arc groove 6.Outer tooth set 2 is enclosed within the outside of inner core 1 coniform part, is placed with spring shim 7 between it and the guide nut 3 corresponding end faces, kills between them when preventing to use.

Embodiment 2: with reference to Fig. 5, Fig. 6, Fig. 2, Fig. 3, Fig. 4, present embodiment is by inner core 1, outer tooth set 2, guide nut 3 and fastening nut 8, wherein, inner core 1 is a steel pipe, its leading portion external surface is cylindrical thread shape (B among Fig. 5, D section), leading portion head external surface is screw thread taper (D-D is with left half among Fig. 5), have on this screw thread taper tube wall several with inner core back segment tube wall on several longitudinal joint 5 staggered longitudinal joints 9, the length of these several longitudinal joints 9 suitably staggers, and also being covered with at inner core leading portion inner surface has little tooth.The back segment part of inner core 1 is identical with embodiment 1, the shape of guide nut 3 and outer tooth set 2 is also identical with embodiment 1, fastening nut 8 is screwed in the screw thread taper core surface of guide nut 3 ends, is placed with spring shim 7 between guide nut and the corresponding end face of outer tooth set.

When this embodiment uses, to be pulled between the arc groove 6 that steel hinge line is inserted in the arc groove 4 of section surface behind the inner core and outer tooth set inner surface and in the centre bore of inner core back segment, to draw steel hinge line is inserted in the inner core leading portion centre bore, tighten guide nut 3 and fastening nut 8 then, make the traction steel hinge line and be pulled steel hinge line to be fastened in this tractor, be convenient to whole lashing.

In sum, the utility model is not only novel, and practical, the true energy of the design of its innovation Solve the problem of long strand bundle lashing difficulty, reached the saving of labor, saved time, the order of economical with materials , compare with background technology and to have outstanding feature and progress, have advance.

Claims

1, a kind of steel hinge line bundle tractor, it is characterized in that it is made up of guide nut, inner core and outer tooth set, described inner core is a metal tube, its leading portion external surface is the screw thread column, the back segment external surface is coniform, vertically evenly be provided with arc groove along the back segment external surface, on this coniform tube wall, have several longitudinal joints; Described guide nut matches with the screw thread cylinder surface of metal tube, and its external surface is tapered; Described outer tooth set inner surface is and the identical inner conical of the coniform tapering of inner core back segment, vertically is provided with and the corresponding arc groove of the coniform arcing surface connected in star of inner core along outer tooth set inner surface, and outer tooth set is enclosed within the cone shape outside of inner core back segment.

2, according to the described steel hinge line bundle of claim 1 tractor, it is characterized in that one section external surface of described inner core leading portion head is the screw thread taper, have on this screw thread taper tube wall several with inner core back segment tube wall on several the staggered longitudinal joints of longitudinal joint, be screwed with fastening nut on the screw thread taper surface of this inner core.

3, according to the described steel hinge line bundle of claim 1 tractor, the inner surface that it is characterized in that the coniform back segment of described inner core is covered with little tooth.

4,, it is characterized in that the leading portion of described inner core and back segment inner surface are covered with little tooth is arranged according to the described steel hinge line bundle of claim 2 tractor.

5, according to claim 1 or 2 or 3 or 4 described steel hinge line bundle tractors, it is characterized in that being placed with spring shim between described guide nut and the corresponding end face of outer tooth set.