CN216663844U

CN216663844U - Bridge floor transverse prestress tensioning auxiliary device

Info

Publication number: CN216663844U
Application number: CN202123311318.6U
Authority: CN
Inventors: 许满军; 刘开来; 林倩斐; 孙志永
Original assignee: CCCC First Harbor Engineering Co Ltd; No 3 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
Current assignee: CCCC First Harbor Engineering Co Ltd; No 3 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-03
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to the field of building construction, in particular to a bridge deck transverse prestress tensioning auxiliary device. The device gallows base one end installs the support frame, the support frame upper end articulates there is the hanging beam, install the travelling car on the hanging beam, adjusting part and hanging beam angular adjustment subassembly, hanging beam one end is the hoist and mount end, the hanging beam other end is the adjustment end, the travelling car is installed in the hoist and mount end of hanging beam, the travelling car bottom is provided with the lifting hook, hang on the lifting hook and be equipped with and suspend wire rope in midair, it has the jack to suspend wire rope bottom in midair, hanging beam angular adjustment subassembly includes first capstan winch and angle modulation wire rope, first capstan winch is installed in the adjustment end of hanging beam and is located hanging beam one side, angle modulation wire rope one end is fixed and is twined on first capstan winch, angle modulation wire rope's the other end and gallows base are connected. The winch is used for adjusting the position of the trolley and the angle of the hanging beam, so that the position of the jack is adjusted, the operation is simple, the construction efficiency can be improved, the construction cost is reduced, and the construction safety is ensured.

Description

Bridge floor transverse prestress tensioning auxiliary device

Technical Field

The utility model relates to the field of building construction, in particular to a bridge deck transverse prestress tensioning auxiliary device.

Background

Before the engineering structural member bears external load, pretension stress is applied to the steel strands in the tension module, the bending resistance and rigidity of the member are improved, the occurrence time of cracks is delayed, and the durability of the member is improved. The horizontal prestressing force of bridge floor is the post-tensioning method prestressing force construction of often using in the cast-in-place case roof beam of cantilever, horizontal prestressing force is mostly the roof and is bent and set up, it faces the limit operation to relate to in its work progress, horizontal prestressing force stretch-draw mouth position sets up in bridge floor flange board edge, often relate to in current work progress and demolish the problem that the part faces the limit protection, thereby cause huge potential safety hazard, and the supplementary stretch-draw of the often simple lever of using of current stage horizontal prestressing force stretch-draw work, alone stretch-draw the lever frame on the guardrail promptly, the overall process all needs to carry out the manpower fixed, jack installation and oil pump operation hand still need two people to cooperate, the work progress efficiency is lower, cause a large amount of manpower extravagant.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems of low efficiency and large manpower waste in the existing bridge transverse prestress tensioning construction process, and provides a bridge deck transverse prestress tensioning auxiliary device.

The technical scheme adopted by the utility model for realizing the purpose is as follows: the utility model provides a bridge floor transverse prestressing force stretch-draw auxiliary device, gallows base one end is installed the support frame, and the support frame upper end articulates there is the hanging beam, install travelling car, be used for adjusting the adjusting part and the hanging beam angular adjustment subassembly of dolly position on the hanging beam, hanging beam one end is the hoist and mount end, the hanging beam other end is the adjusting end, the travelling car is installed in the hoist and mount end of hanging beam, and the travelling car bottom is provided with the lifting hook, hangs on the lifting hook and is equipped with wire rope in suspension, suspends wire rope bottom in suspension and has hung the jack, hanging beam angular adjustment subassembly includes first capstan winch and angle modulation wire rope, first capstan winch is installed in the adjusting end of hanging beam and is located hanging beam one side, angle modulation wire rope one end is fixed and is twined on first capstan winch, and angle modulation wire rope's the other end is connected with the gallows base.

Furthermore, the adjusting assembly comprises a second winch, a fixed pulley, a first steel wire rope and a second steel wire rope, the second winch is installed at the adjusting end of the hanging beam and located on the other side of the hanging beam, the fixed pulley is installed at the hoisting end of the hanging beam and located on the same side as the second winch, one end of the first steel wire rope is fixed and wound on the second winch, the other end of the first steel wire rope is connected with one end of the movable trolley by bypassing the fixed pulley, the other end of the movable trolley is connected with one end of the second steel wire rope, the other end of the second steel wire rope is fixed and wound on the second winch, and the first steel wire rope and the second steel wire rope are separated and reversely wound on the second winch.

Furthermore, the movable trolley comprises a trolley main body in a U-shaped structure, two groups of rollers are symmetrically arranged on two sides in the trolley main body, two rollers in each group of rollers are respectively located on two sides of the hanging beam, and the rollers are in sliding contact with the lower flange plate of the hanging beam.

Furthermore, universal wheels are installed at four corners of the bottom of the hanger base.

Furthermore, the end part of the hoisting end of the hoisting beam is provided with a baffle.

Furthermore, an inclined bracket is arranged between the hanging bracket base and the supporting frame.

Furthermore, a pin hole is formed in the hanging beam, a pin shaft penetrates through the pin hole, and the hanging beam is hinged to the support frame through the pin shaft.

Further, the hanging beam is an I-shaped steel beam.

Furthermore, the hanger base is a rectangular frame formed by assembling and welding angle steels.

Furthermore, the support frame is an angle steel support frame.

The utility model can utilize the hanging beam to suspend the jack when stretching the bridge floor transverse prestress steel strand, one winch is used for adjusting the position of the movable trolley, and one winch is used for adjusting the angle of the hanging beam, thereby adjusting the position and the suspension height of the jack, the operation is simple, convenient and rapid, the universal wheel can make the whole device move conveniently, the device does not need complex equipment and instruments, can be simply manufactured by using existing materials on site, can effectively improve the construction efficiency, reduce the construction cost, meet the requirement of transverse prestress tension, and can meet the use requirement of the bridge floor transverse prestress tension safety aspect at the same time.

Drawings

Fig. 1 is a structural view of a prestress tension assisting apparatus of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is an installation diagram of the main frame and the hanging beam of the utility model.

FIG. 4 is a diagram of the application of the pre-stressed tension assisting device of the utility model.

In the figure: 1. the steel wire rope hoisting device comprises a hanger base, 2 universal wheels, 3 angle adjusting steel wire ropes, 4 hanging beams, 5 fixed pulleys, 6 moving trolleys, 7 first winches, 8 second winches, 9 first steel wire ropes, 10 second steel wire ropes, 11 hanging steel wire ropes, 12 jacks, 13 hinge pins and 14 steel stranded wires.

Detailed Description

The present invention will be described in detail below with reference to the drawings and examples, but the present invention is not limited to the specific examples.

The bridge floor transverse prestress tensioning auxiliary device comprises a hanger base 1, wherein the hanger base 1 is a rectangular frame formed by assembling and welding angle steel, the size of the rectangular frame is 1.5 x 1m, universal wheels 2 are installed at four corners of the bottom of the hanger base 1, the requirement of convenience in moving of the device is met, a support frame is installed at one end of the hanger base 1 and is made of two 5 x 5cm angle steel, and an inclined support is welded between the hanger base 1 and the two angle steel.

The hanging beam 4 adopts a light 10# I-steel with the length of 2.5m as a main body structure, a 22mm pin hole is drilled at the position 1m away from the end head, the I-steel is hinged and connected to two angle steels through a pin shaft 13 with the nominal diameter of 20mm, a movable trolley 6, an adjusting component for adjusting the position of the trolley and a hanging beam angle adjusting component are installed on the hanging beam 4, one end with the length of 1.5m of the hanging beam 4 is used as a hoisting end, one end with the length of 1m is used as an adjusting end, the movable trolley 6 is installed at the hoisting end, the movable trolley 6 comprises a trolley main body in a U-shaped structure, the trolley main body is U-shaped steel formed by welding 1cm thick steel plates, the length is 15cm, the width is 10cm, the height is 10cm, two groups of rollers are symmetrically installed at two sides in the trolley main body, two rollers in each group of rollers are respectively located at two sides of the hanging beam 4, the rollers are in sliding contact with a lower flange plate of the hanging beam 4, a lifting hook is installed at the center of the bottom of the movable trolley 6, a suspension steel wire rope 11 is hung on the lifting hook, and a jack 12 is hung at the bottom of the suspension steel wire rope 11; the hanging beam angle adjusting assembly comprises a first winch 7 and an angle adjusting steel wire rope 3, the first winch 7 is installed at the adjusting end of the hanging beam 4 and is located on one side of the hanging beam 4, one end of the angle adjusting steel wire rope 3 is fixed and wound on the first winch 7, and the other end of the angle adjusting steel wire rope 3 is connected with the hanging frame base 1; the adjusting part comprises a second winch 8, a fixed pulley 5, a first steel wire rope 9 and a second steel wire rope 10, the second winch 8 is installed at the adjusting end of the hanging beam 4 and is located on the other side of the hanging beam 4, the fixed pulley 5 is installed at the hoisting end of the hanging beam 4 and is located on the same side with the second winch 8, one end of the first steel wire rope 9 is fixed and wound on the second winch 8, the other end of the first steel wire rope 9 is connected with one end of the movable trolley 6 by bypassing the fixed pulley 5, the other end of the movable trolley 6 is connected with one end of the second steel wire rope 10, the other end of the second steel wire rope 10 is fixed and wound on the second winch 8, the first steel wire rope 9 and the second steel wire rope 10 are separated and reversely wound on the second winch 8, a baffle used for preventing the movable trolley 6 from sliding out of the hanging beam 4 is installed at the end part of the hanging beam 4, and the baffle is made of a steel plate with the thickness of 1 cm.

Preferably, the nominal diameters of the angle adjusting wire rope 3, the first wire rope 9, the second wire rope 10 and the suspension wire rope 11 are all 6.2mm, wherein the length of the suspension wire rope 11 is 1.6 m.

When the bridge deck transverse prestress tensioning auxiliary device is used, as shown in fig. 4, the device is moved to the position near the bridge deck prestress tensioning end, a jack 12 is suspended on a movable trolley 6 through a suspension steel wire rope 11, the movable trolley 6 is driven to move along a suspension beam 4 by rotating a second winch 8, when the second winch 8 rotates clockwise, a first steel wire rope 9 is retracted by the winch, a second steel wire rope 10 is simultaneously released to enable the trolley to move towards a fixed pulley 5, when the second winch 8 rotates anticlockwise, a second steel wire rope 10 is retracted by the winch, a first steel wire rope 9 is simultaneously released to enable the trolley to move towards the second winch 8, after the jack 12 moves to the front end of a steel strand 14, the angle of the suspension beam 4 is adjusted by using a first winch 7, the height of the jack 12 is consistent with the height of the steel strand 14, the jack 12 is installed on the steel strand 14 by using a dragging tool, and the second winch 8 is required to simultaneously rotate to enable the movable trolley 6 and the jack 12 to move to keep a same height so as that the height of the steel strand 14 is consistent during dragging process And the jack 12 has enough moving space, the steel strand 14 can be tensioned after the installation is finished, and the jack 12 is pushed out of the steel strand 14 after the tensioning is finished, so that the next steel strand can be tensioned.

The above description is further detailed in connection with the preferred embodiments of the present invention, and it is not intended to limit the practice of the utility model to these descriptions. It will be apparent to those skilled in the art that various modifications, additions, substitutions, and the like can be made without departing from the spirit of the utility model.

Claims

1. The utility model provides a bridge floor transverse prestressing force tensioning auxiliary device which characterized in that: the support frame is installed to gallows base one end, and the support frame upper end articulates there is the hanging beam, install travelling car, be used for adjusting the adjusting part and the hanging beam angular adjustment subassembly of dolly position on the hanging beam, hanging beam one end is the hoist and mount end, and the hanging beam other end is the adjustment end, the travelling car is installed in the hoist and mount end of hanging beam, and the travelling car bottom is provided with the lifting hook, hangs on the lifting hook and is equipped with wire rope in midair, suspends wire rope bottom in midair and has hung the jack, hanging beam angular adjustment subassembly includes first capstan winch and angle modulation wire rope, first capstan winch is installed in the adjustment end of hanging beam and is located hanging beam one side, angle modulation wire rope one end is fixed and twines on first capstan winch, and angle modulation wire rope's the other end and gallows base are connected.

2. The bridge deck transverse prestress tension auxiliary device of claim 1, wherein: the adjusting assembly comprises a second winch, a fixed pulley, a first steel wire rope and a second steel wire rope, the second winch is installed at the adjusting end of the hanging beam and located on the other side of the hanging beam, the fixed pulley is installed at the hoisting end of the hanging beam and located on the same side with the second winch, one end of the first steel wire rope is fixed and wound on the second winch, the other end of the first steel wire rope is connected with one end of the moving trolley by bypassing the fixed pulley, the other end of the moving trolley is connected with one end of the second steel wire rope, the other end of the second steel wire rope is fixed and wound on the second winch, and the first steel wire rope and the second steel wire rope are separated and reversely wound on the second winch.

3. A bridge deck transverse prestressing auxiliary device according to claim 1, wherein: the movable trolley comprises a trolley main body in a U-shaped structure, two groups of rollers are symmetrically arranged on two sides in the trolley main body, two rollers in each group of rollers are respectively positioned on two sides of the hanging beam, and the rollers are in sliding contact with a lower flange plate of the hanging beam.

4. A bridge deck transverse prestressing auxiliary device according to claim 1, wherein: and universal wheels are installed at four corners of the bottom of the hanger base.

5. A bridge deck transverse prestressing auxiliary device according to claim 1, wherein: and a baffle is arranged at the end part of the hoisting end of the hoisting beam.

6. A bridge deck transverse prestressing auxiliary device according to claim 1, wherein: an inclined bracket is arranged between the hanger bracket base and the supporting frame.

7. A bridge deck transverse prestressing auxiliary device according to claim 1, wherein: the hanging beam is provided with a pin hole, a pin shaft penetrates through the pin hole, and the hanging beam is hinged to the support frame through the pin shaft.

8. A bridge deck transverse prestress tensioning auxiliary device according to any one of claims 1 to 7, wherein: the hanging beam is an I-shaped steel beam.

9. A bridge deck transverse prestress tensioning auxiliary device according to any one of claims 1 to 7, wherein: the hanger base is a rectangular frame formed by assembling and welding angle steels.

10. A bridge deck transverse prestress tensioning auxiliary device according to any one of claims 1 to 7, wherein: the support frame is an angle steel support frame.