CN212452304U

CN212452304U - A tension structure that is used for taking hoist cable of bulb pull rod to be connected with base

Info

Publication number: CN212452304U
Application number: CN202020599177.9U
Authority: CN
Inventors: 黄小龙; 陈执正; 高树森; 郭永刚; 侯耀华
Original assignee: China Construction Sixth Engineering Division Co Ltd; China State Construction Bridge Corp Ltd
Current assignee: China Construction Sixth Engineering Division Co Ltd; China State Construction Bridge Corp Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-02-02
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a tensioning structure for connecting a sling with a ball head pull rod with a base, which comprises an upper carrying pole beam, a lower carrying pole beam and a finish rolling deformed steel bar part, wherein the upper and lower carrying pole beams are divided into a left part and a right part; the middle of the shoulder pole beam is provided with a threaded hole, and the shoulder pole beam is connected with the sling and the ball head rod of the ball head base through threaded anchoring, so that the connection form is simple and practical; the jack is adopted for synchronous tensioning, the stress of the sling is uniform, and the safety of the sling tensioning construction process is ensured.

Description

A tension structure that is used for taking hoist cable of bulb pull rod to be connected with base

Technical Field

The utility model relates to an angular sling tensioning construction, in particular to a tensioning construction with a sling of a ball-head pull rod connected with a base.

Background

The existing suspension bridge is generally made of galvanized steel wire ropes or galvanized high-strength parallel steel wires, and a small number of small-span suspension bridges are also made of rigid suspenders. The rigid suspension rod is made of round steel or steel pipe, the two ends of the rigid suspension rod are provided with threads, and the rigid suspension rod is connected with a connecting rod extending out of the stiffening beam by a screw cap; or both ends are welded with connecting blocks, bolt holes are reserved on the connecting blocks, and the connecting blocks are connected with the lifting lugs of the cable clamp and the connecting rods on the stiffening beam by bolts. The suspender with larger tension has overlarge cross section if a steel suspender is adopted, is not easy to be treated in structure, and is generally made into a sling by adopting a high-strength steel wire rope. For connection, the two ends of the steel wire rope are scattered and extended into the connecting sleeve, and the poured alloy is connected with the sleeve into a whole by using the steel wire rope to form the anchor head. The eye rods of the sling are connected with the stiffening beam through the connecting rods.

The connecting mode of the sling and the stiffening beam is based on the principle of direct and reliable force transmission, convenient maintenance and difficult water accumulation. The common anchor head bearing mode and the pin joint mode are adopted. The connection has large stress on the sling with an angle, is not easy to use for a long time, has short service life, is inconvenient for field construction during connection, needs to build a working platform and increases project cost.

Disclosure of Invention

The utility model aims to overcome the prior art not enough, provide a convenient a hoist cable and the stretch-draw structure that the base is connected that is used for taking the bulb pull rod of installation, stretch-draw, dismantlement.

The utility model discloses a following technique realizes above-mentioned purpose:

the utility model discloses a tensioning structure for connecting a sling with a ball head pull rod with a base, which comprises a lower-part carrying pole beam respectively arranged on a left ball-shaped base ball head rod, an upper-part carrying pole beam arranged right above the lower-part carrying pole beam, a lower-part carrying pole beam respectively arranged on a right ball-shaped base ball head rod, and an upper-part carrying pole beam arranged right above the lower-part carrying pole beam, wherein the two lower-part carrying pole beams are arranged along the same horizontal height, and the two upper-part carrying pole beams are arranged along the same horizontal height;

each carrying pole beam consists of two half carrying pole beams which are butted to form a cuboid, the left and right ends of the two half carrying pole beams are respectively connected through bolts arranged along the horizontal direction, one end of each bolt is in threaded connection with a nut embedded in one half carrying pole beam, the other end of each bolt is in threaded connection with a nut tightly pressed on the other half carrying pole beam, a threaded hole with the axis arranged along the vertical direction is arranged in the middle of each carrying pole beam, the left and right sides of the center of each carrying pole beam are respectively and symmetrically provided with a threaded steel mounting hole with the axis arranged along the vertical direction, two spherical base ball-head rods respectively penetrate through threaded holes on the carrying pole beam at the lower part of the left side and the carrying pole beam at the lower part of the right side and are in threaded connection with the threaded holes, and lower screw rods of two slings respectively penetrate through the threaded holes on the carrying pole beam at the upper part of, the ball head rod of each spherical base penetrates through a threaded hole part on a carrying pole beam at the lower part and a sling rope penetrates through a threaded hole part on a carrying pole beam at the upper part and is respectively in threaded connection with the sleeve, the length of the sling rope can be adjusted by rotating the sleeve, a finish-rolled deformed steel bar penetrates through a finish-rolled deformed steel bar mounting hole of the carrying pole beam at the upper part and a finish-rolled deformed steel bar mounting hole of the carrying pole beam at the lower part which are coaxially arranged along the vertical direction in each group, the top of the finish-rolled deformed steel bar penetrates through the center of the jack and the jack support frame and is anchored at the upper end of the jack through a nut, the bottom of the finish-rolled deformed steel bar is fixed on the carrying pole beam at the lower part through a nut, the jack support frame is fixed on the carrying pole.

The utility model has the advantages that:

1. the utility model adopts a left-right two-part structure, wherein a nut is embedded in one half of the shoulder pole beam, and the two parts are connected by a transverse screw rod, thus being easy to install and disassemble;

2. the center threaded hole is arranged in the middle of the shoulder pole beam, and the shoulder pole beam is connected with the sling screw rod and the ball head rod of the ball head base through threaded anchoring, so that the connection form is simple and practical;

3. the tensioning structure adopts the synchronous jack to carry out synchronous tensioning, so that the stress of the left sling and the right sling is uniform, and the safety of the sling tensioning construction process is ensured.

Drawings

Fig. 1 is a schematic layout view of a tension structure for connecting a sling with a ball-head pull rod with a base according to the present invention;

fig. 2 is a schematic view of the overall structure of a stretcher beam of the present invention, which is used for a tensile structure in which a sling with a ball-head pull rod is connected with a base;

fig. 3 is a schematic structural view of a half-carrying pole beam of a tension structure for connecting a sling with a ball-head pull rod with a base;

fig. 4 is a schematic view of the installation of the shoulder pole beam of the tension structure for connecting the sling with the ball-head pull rod with the base.

Detailed Description

The following will explain in detail a tensioning structure for connecting a sling with a ball-head pull rod with a base according to the present invention with reference to the accompanying drawings.

The utility model discloses a stretch-draw structure that hoist cable and base that is used for taking bulb pull rod are connected, including installing respectively the carrying pole roof beam 3 of a lower part on left spherical base bulb pole 6 and setting up the carrying pole roof beam on the upper portion directly over the carrying pole roof beam 3 of lower part to and install respectively the carrying pole roof beam 3 of a lower part on the spherical base bulb pole 6 on right side and set up the carrying pole roof beam on the upper portion directly over the carrying pole roof beam 3 of lower part, the carrying pole roof beam 3 of two lower parts sets up along same level, the carrying pole roof beam on two upper portions sets up along same level.

Each carrying pole beam consists of two half carrying pole beams which are butted to form a cuboid, the left end and the right end of each two half carrying pole beams are respectively connected through a bolt 8 arranged along the horizontal direction, one end of each bolt 8 is in threaded connection with a nut 3-1 embedded in one half carrying pole beam, and the other end of each bolt 8 is in threaded connection with a nut 5 tightly pressed on the other half carrying pole beam. The middle of the carrying pole beam is provided with a threaded hole with an axis arranged along the vertical direction, the left side and the right side of the center of the carrying pole beam are respectively symmetrically provided with finish rolling threaded steel mounting holes 3-3 with axes arranged along the vertical direction, two spherical base ball head rods 6 respectively penetrate through threaded holes on the carrying pole beam at the lower part of the left side and the carrying pole beam 3-2 at the lower part of the right side and are in threaded connection with the threaded holes, lower screw rods of two suspension cables 7 respectively penetrate through the threaded holes on the carrying pole beam at the upper part of the left side and the upper carrying pole beam 3-2 at the right side and are in threaded connection with the threaded holes, the part of each spherical base ball head rod 6 penetrating through the threaded hole on the carrying pole beam at the lower part and the part of each suspension cable 7 penetrating through the threaded hole on the carrying pole beam at the upper part are respectively in threaded connection in a sleeve 9, the sleeve 9 is rotated to adjust the length of the The finish-rolled deformed steel bar mounting holes are respectively provided with a finish-rolled deformed steel bar 4 in a penetrating way along the vertical direction, the top of the finish-rolled deformed steel bar 4 passes through the center of the jack 1 and the jack strut 2 and is anchored at the upper end of the jack through a nut, and the bottom of the finish-rolled deformed steel bar 4 is fixed on a shoulder pole beam 3-2 at the lower part through a nut. The jack support frame 2 is fixed on the shoulder pole beam at the upper part, and the jack 1 is fixed on the jack support frame 2.

In the construction process, a threaded hole on an upper shoulder pole beam 3-2 is in threaded connection with a lower part screw rod of a sling 7, a bulb rod 6 of a bulb base is in threaded connection and anchored with a threaded hole on a lower shoulder pole beam 3-2, then a chain block is adopted to adjust the angle of the sling 7 to be consistent with that of the bulb rod 6, a vertical finish rolling deformed steel bar 4 is installed, nuts are adopted at two ends for temporary anchoring, a jack strut 2 and a jack 1 are installed, the jack 1 and the finish rolling deformed steel bar 4 are anchored, a sleeve 9 is installed at the lower end of the sling 7 for a certain distance (generally 6-10 screw fasteners), the jack synchronously stretches and rolls the finish rolling deformed steel bar, the distance between the upper shoulder pole beam 3 and the lower shoulder pole beam 3 is shortened, when the bulb rod of the bulb base 6 is adjacent to the sleeve 9, the sleeve 9 is rotated to connect the sling 7 with the ball hinge base 6, and the synchronous stretching work of the, and simultaneously, the sleeve 9 is rotated to gradually shorten the distance between the sling 7 and the ball head base 6, the distance is adjusted to the designed length, the sling is tensioned, then the tensioning structure is disassembled, and the jack 1, the jack support frame 2, the vertical finish rolling deformed steel bar 4, the nut 5, the screw 8 and the upper and lower carrying pole beams 3 are sequentially disassembled.

Claims

1. The utility model provides a stretch-draw structure that hoist cable and base that is used for taking bulb pull rod are connected which characterized in that: the lower-part carrying pole beam and the upper-part carrying pole beam are respectively arranged on the left spherical base ball head rod, the lower-part carrying pole beam is arranged right above the lower-part carrying pole beam, the lower-part carrying pole beam is respectively arranged on the right spherical base ball head rod, the upper-part carrying pole beam is arranged right above the lower-part carrying pole beam, the two lower-part carrying pole beams are arranged along the same horizontal height, and the two upper-part carrying pole beams are arranged along the same horizontal height;