CN107313360A - Overhead cable formula is without support bearing replacement operating platform - Google Patents

Abstract

A zipper-type non-bracket support replacement operation platform, which is composed of anchor plates, two-way corbel holders, limit bolts, steel beams, lifting lugs, driving wire ropes, safety wire ropes, traction ropes, traction pulleys and hanging baskets; Anchor plates are installed at both ends of the cover beam, and one end of the two steel beams is respectively installed and fixed on the corresponding anchor plates through two-way corbel brackets and limit bolts; steel wire ropes and safety wire ropes are installed between the lifting lugs at the corresponding positions of the two steel beams; the upper end of the hanging basket The traction pulley is installed, and is suspended on the walking wire rope through the traction pulley; the steel beam and the hanging basket are provided with a traction rope, and the hanging basket is positioned by the traction rope. The hanging basket walks on the driving wire rope through the traction pulley, and the operator in the hanging basket hangs the safety rope buckle on the safety wire rope, and manually pulls the hanging basket through the traction rope to move to the designated position in the direction of the cross bridge. The invention can provide support replacement, cover beam repair, surface cleaning, painting and other actions, is safe and reliable, convenient and quick to install, saves construction cost, and is suitable for replacement of common prefabricated beam bridge bearings on expressways.

Description

Zipline-type non-bracket support replacement operating platform

technical field

The invention belongs to the technical field of bridge engineering. It relates to an operation platform suitable for replacement of expressway prefabricated bridge bearings.

Background technique

Bridge bearings are important components connecting the upper and lower structures of bridges. With the development of transportation in recent years, bridge bearings are affected by periodic loads, especially overloading, which will inevitably accelerate the aging or deformation of bearings, which directly endangers The life of the bridge structure requires periodic replacement. For bridges with high-span piers, long-span lines, rivers, and river valleys, if a full-scale scaffolding construction platform is routinely erected to replace supports, it will be limited by factors such as geological conditions, bridge clearance, and whether there is water under the bridge; If you hire a bridge inspection vehicle to come over, you will be limited by the high construction cost; if you use drilling holes on the bridge pier cap beam to build a construction platform, it will be troublesome to assemble and disassemble, and the work efficiency will be low. How to quickly build the support and replace the construction platform is often a big problem for the construction unit, and a lot of manpower and material resources are often spent on the erection of the construction platform under the bridge. Therefore, how to simplify the setting up of the operating platform while maintaining normal traffic conditions is particularly important and urgent.

Contents of the invention

The object of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and to provide a zipline type support replacement operation platform without support.

The present invention is achieved through the following technical solutions.

The zipper-type non-bracket support replacement operating platform of the present invention is composed of an anchor plate, a two-way corbel bracket, a limit bolt, a steel beam, a lifting lug, a driving wire rope, a safety wire rope, a traction rope, a traction pulley and a suspension. Anchorage plates are installed at both ends of the cover beam, and one end of the two steel beams is respectively installed and fixed on the corresponding anchor plates through two-way brackets and limit bolts. Steel wire rope; a traction pulley is installed on the upper end of the hanging basket, and is suspended on the walking wire rope through the traction pulley; a traction rope is set between the steel beam and the hanging basket, and the hanging basket is positioned by the traction rope. The hanging basket walks on the driving wire rope through the traction pulley, and the operator in the hanging basket hangs the safety rope buckle on the safety wire rope, and manually pulls the hanging basket through the traction rope to move to the designated position in the direction of the cross bridge.

As a further improvement of the present invention, the anchor plate is a thick steel plate with bolt holes, and the two-way corbel holder is welded to the anchor plate by two upper and lower corbels and two small steel plates. Bolt holes are reserved for the anchor plate, and threaded steel bars are implanted on the side of the cover beam, and the anchor plate is tightly attached to the side of the cover beam and fixed with nuts.

As a further improvement of the present invention, the steel beams are assembled and welded by two channel steels; each steel beam is provided with three lifting lugs; The limit blocks are welded on the steel beams on both sides of the hoop to prevent the longitudinal displacement of the lifting lug. In order to prevent the longitudinal sliding of the steel beam, limit blocks are welded at the corresponding positions of the steel beam near the edges on both sides of the anchor plate. By installing limit bolts on the two-way corbel bracket, the steel crossbeam does not rotate horizontally on the anchor plate. Shackles are provided at both ends of the walking wire rope, and the shackles are connected with the lifting lugs on the steel beam to form the walking track of the hanging basket.

As a further improvement of the present invention, the lower end of the traction pulley is provided with a metal snap, and the two traction pulleys are connected by a pulley tie rod, and a card slot is arranged on the pulley tie rod; when installing, the walking wire rope and the safety wire rope One end is fixedly connected to the lug reserved on the steel beam first, and the traveling wire rope is installed with a traction pulley, and then the other end of the traveling wire rope and safety wire rope is fixedly connected to the steel beam on the other side of the cover beam. The hanging basket is assembled from the hanging basket frame and the scaffolding pedal. The hanging basket frame is welded by a number of hollow pipes, and the front and rear are equipped with oblique rods that are fixed and connected by bolts to act as a fence. The scaffolding pedal is placed at the bottom of the hanging basket frame, and the tops of the four columns of the hanging basket frame are connected to the traction pulley through metal buckles. The fixed pulley is connected and fixed by bolts on the steel beam through a hoop, slots are set at both ends of the hanging basket frame, and metal buckles are set at both ends of the traction rope. Pass the traction rope through the fixed pulley and install the metal buckles at both ends respectively. On the corresponding slots, the hanging basket can be moved in the direction of the bridge by pulling the traction rope, and at the same time, the hanging basket can be fixed at the designated position.

Compared with the prior art, the present invention has the advantages that the zipline-type non-bracket support replacement operating platform is quick and convenient to install, saves construction costs, has high safety and reliability, and is not easily restricted by the site environment.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Figure 2 is an enlarged detailed view of the devices on the side of the cross bridge to the cover beam.

Figure 3 is an enlarged detailed view of the connection between the shackle and the lifting lug.

Figure 4 is a schematic diagram of the structure of the hanging basket.

In the figure: 1 is the cover beam, 2 is the anchor plate, 3 is the two-way bracket bracket, 4 is the limit bolt, 5 is the steel beam, 6 is the limit block, 7 is the lifting lug, 8 is the shackle, 9 is the Fixed pulley, 10 is a walking wire rope, 11 is a safety wire rope, 12 is a traction rope, 13 is a traction pulley, 14 is a metal buckle, 15 is a hanging basket, 16 is a hanging basket frame, 17 is a scaffold pedal, and 18 is a horizontal pulley Bar, 19 is the draw-in groove.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The construction personnel go from the bridge deck to the two sides of the cover beam 1 in the direction of the cross bridge through the existing auxiliary bridge maintenance platform, and install the anchor plate 2, and the bolt holes are reserved for the anchor plate 2; Drill the hole with a percussion drill, and implant the threaded steel bar after clearing the hole, and then fix the anchor plate 2 and the side of the cover beam 1 tightly with nuts. The steel beam 5 is placed on the two-way corbel holder 3, the limit block 6 is stuck on both sides of the anchor plate 2, and the steel beam 5 is fixed on the anchor plate 2 by installing the limit bolt 4 on the two-way corbel holder 3 , no vertical or horizontal displacement occurs. Install walking wire rope 10 and safety wire rope 11 on the steel crossbeam 5 near central partition cover beam 1 end; Then the other end of the walking wire rope 10 and the safety wire rope 11 is bound and connected with the light guide rope. The other end of the light guide rope is tied with a heavy object, thrown to the other side of the cover beam 1 and hung on the corresponding steel beam 5, and then connected to the corresponding lifting lug 7. Before connecting the lifting lug 7, two traction pulleys 13 are respectively passed on the walking wire rope 10 on both sides; After the hanging basket frame 16 is installed, the scaffolding pedal 17 is placed on the bottom of the hanging basket frame 16 for construction workers to walk and stand. The traction rope 12 of one side is installed nearby earlier, and the traction rope 12 of the other side can adopt similar projectile method to be installed in place in the hanging basket frame 16. When the traction rope 12 is installed, the metal buckle 14 at one end is installed on the slot 19 of the pulley horizontal tie rod 18, and the other end passes through the fixed pulley 9 on the steel beam 5, and the operator pulls the traction rope 12 to make the hanging basket 15 Move across the bridge. During the moving process, the traction ropes 12 on both sides of the hanging basket 15 work at the same time, and the hanging basket 15 is moved in the direction of the bridge by pulling one side and relaxing the other side. After reaching the designated position, the pulling rope 12 on one side and Loosen the metal buckle 14 of the traction rope 12 on the other side, and connect and fix it on the slot 19 of the corresponding hanging basket frame 16 at the same time. After the hanging basket 15 arrives at the designated position and is fixed, the operator can perform operations such as the support. The operator should tie up the safety rope when working in the hanging basket 15, and the metal snap button 14 at the end of the safety rope is installed on the safety wire rope 11 in the middle to ensure the safety of the operation. After the work is completed, disassemble in the order of first assembly and then disassembly.

It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the present invention, and these changes and modifications should also be regarded as the protection scope of the present invention. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (4)

1. a kind of overhead cable formula is without support bearing replacement operating platform, it is characterised in that：By anchor plate（2）, two-way bracket deck （3）, caging bolt（4）, gooseneck（5）, hanger（7）, walking steel wire rope（10）, safety steel cable（11）, pull rope（12）, lead Priming pulley（13）And hanging basket（15）Composition；In bent cap（1）Two ends are respectively mounted anchor plate（2）, two goosenecks（5）Distinguish one end Pass through two-way bracket deck（3）And caging bolt（4）It is fixed on corresponding anchor plate（2）On；In two goosenecks（5）Corresponding positions Put hanger（7）Between steel wire rope is installed（10）And safety steel cable（11）；Hanging basket（15）Upper end is provided with traction movable pulley（13）, and By drawing movable pulley（13）It is suspended on walking steel wire rope（10）On；Gooseneck（5）With hanging basket（15）Pull rope is set（12）, hang Basket（15）Pass through pull rope（12）Positioning.

2. overhead cable formula according to claim 1 is without support bearing replacement operating platform, it is characterised in that：The anchor plate （2）It is one block of steel plate with bolt hole；Two-way bracket deck（3）It is made up of each two brackets and two blocks of small steel plates up and down And it is welded on anchor plate（2）；Anchor plate（2）Prepared screw-bolt hole, bent cap（1）Threaded reinforcing bar is implanted on side, by anchor plate （2）With bent cap（1）Side is fixed after being close to using nut.

3. overhead cable formula according to claim 1 is without support bearing replacement operating platform, it is characterised in that：The gooseneck （5）It is to be welded by two channel-section steel spellings；Every gooseneck（5）Three hangers of upper setting（7）, each hanger（7）Pass through anchor ear Mode is joined with bolts in gooseneck（5）On, hanger（7）The gooseneck of anchor ear both sides（5）On be welded with limited block（6）； In anchor plate（2）Gooseneck near both sides of the edge（5）Corresponding position welded limiting block（6）；Two-way bracket deck（3）Upper peace Equipped with caging bolt（4）；Driving steel wire rope（10）And safety steel cable（11）Two ends set shackle（8）, by shackle（8）Respectively with Gooseneck（5）The hanger of upper relevant position（7）Connection.

4. overhead cable formula support bearing replacement operating platform according to claim 1, it is characterised in that：Described traction is dynamic to be slided Wheel（13）Lower end is provided with metal knot that can be undone by a pull（14）, two traction movable pulleys（13）Between with pulley lateral bracing connect（18）, pulley Lateral bracing（18）Upper setting neck（19）；Hanging basket（15）It is by hanging basket framework（16）And treadle of false work（17）It is assembled；Hang Hoop frame（16）It is welded by some hollow tubes, the front and rear brace that is provided with is bolted；Hanging basket framework（16）Bottom Place treadle of false work（17）, hanging basket framework（16）Four column tops pass through metal knot that can be undone by a pull（14）With traction movable pulley（13）Even Connect；Fixed pulley（9）In gooseneck（5）It is upper to be joined with bolts by anchor ear form, hanging basket framework（16）Two ends set neck （19）, pull rope（11）Two ends set metal knot that can be undone by a pull（14）, by pull rope（12）Through fixed pulley（9）, and by the metal at two ends Knot that can be undone by a pull（14）It is separately mounted to each self-corresponding neck（19）On.