CN214695173U - Assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley - Google Patents

Abstract

The utility model provides an assembled continuous beam prestressing force steel bundle whole bundle stretch-draw operation platform truck, including movable frame, hoist, shoulder pole roof beam, punching jack and counter weight, the downside of locating the movable frame is hung along the horizontal direction through the hoist to the shoulder pole roof beam, and the downside at shoulder pole roof beam both ends is hung respectively and is equipped with punching jack and counter weight. The problems that a heavier jack under a bridge deck is not provided with a hoisting space and the jack is difficult to lift and transport manually, part of steel strands are large in stress loss and part of the steel strands are over-tensioned due to the fact that a single tensioning steel strand is adopted in the traditional method, tensioning quality is poor, construction efficiency is low, and safety risk is high are solved. Belonging to the field of continuous beam construction.

Description

Assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley

Technical Field

The utility model relates to an assembled continuous beam prestressing force steel beam whole bundle stretch-draw operation platform truck belongs to assembled continuous beam construction technical field.

Background

At present, the manual movement, hoisting and positioning of a heavier jack (more than 100 kg) in a tooth block area under a bridge deck (or a flange plate), concentric collinear control of a jack positioning axis and a steel strand anchorage device and the like are difficult to realize basically, and the safety risk is extremely high, so that a smaller jack is adopted to perform single prestressed steel strand tensioning at the present stage, the efficiency is low, the tensioning quality is poor, the discreteness of the stress and elongation deviation of each steel strand is large, and the phenomena of large stress loss of partial steel strands, over-tensioning of partial steel strands and the like are caused.

The tensioning operation trolley is used for realizing the whole-bundle tensioning operation, the dual-control quality of the tensioning stress and the extension quantity of a prestressed steel strand steel bundle can be obviously improved, the tensioning stress and the extension quantity of each steel strand in the steel bundle are more uniform, the design and specification requirements can be better met, the non-uniform phenomena that part of steel strands are large in stress loss, part of steel strands are over tensioned and the like caused by the traditional single tensioning steel strand are greatly avoided, the integrity of the stress of the steel bundle is realized, the tensioning operation trolley is high in construction efficiency and quality, small in safety risk and low in construction cost. The trolley has a simple and reliable structure, can be processed and manufactured by locally taking materials in a construction site, changes waste into valuable, saves steel, has good applicability and is suitable for popularization and application.

Disclosure of Invention

The utility model provides a whole bundle stretch-draw operation platform truck of assembled continuous beam prestressing force steel strand to solve single stretch-draw steel strand wires and lead to inhomogeneous phenomena such as partial steel strand wires stress loss is big, partial steel strand wires surpass stretch-draw, the stretch-draw quality is poor, and the efficiency of construction is low, the high problem of safe risk.

In order to achieve the purpose, the whole-bundle tensioning operation trolley for the pre-stressed steel bundles of the fabricated continuous beam comprises a movable frame, a lifting appliance, a carrying pole beam, a through jack and a balance weight, wherein the carrying pole beam is hung on the lower side of the movable frame along the horizontal direction through the lifting appliance, and the through jack and the balance weight are respectively hung on the lower sides of two ends of the carrying pole beam.

In the tensioning operation trolley, the upper part of the movable trolley frame is provided with two longitudinal guide rails, the two longitudinal guide rails are provided with traveling mechanisms sliding along the guide rails, and the upper end of the lifting appliance is fixed on the traveling mechanisms;

in the tensioning operation trolley, two ends of the longitudinal guide rail are also correspondingly provided with transverse guide rails, two ends of each transverse guide rail are fixed on the movable frame, two longitudinal guide rails at the same end are fixedly connected through a connecting rod, and the lower sides of two ends of each longitudinal guide rail are provided with transverse travelling wheels which are arranged along the transverse guide rails in a sliding manner;

in the tensioning operation trolley, the lifting appliance is a chain block lifting appliance;

in the tensioning operation trolley, a hanging ring is arranged on the upper side of the middle part of the carrying pole beam, and a lifting hook at the lower end of a lifting appliance is arranged on the hanging ring on the upper side of the middle part of the carrying pole beam;

in the tensioning operation trolley, a steel frame is transversely arranged on the upper side of the center-penetrating jack, the center-penetrating jack is bound and fixed on the lower side of the steel frame through steel bars, and the upper end of the steel frame is rotatably connected to the lower side of one end of the carrying pole beam through a rotating bolt;

in the tensioning operation trolley, the movable type frame is a square hollow frame, the longitudinal guide rail is fixed in the middle of the upper end of the movable type frame, and walking wheels are arranged at four corners of the lower end of the movable type frame.

Compared with the prior art, the utility model discloses can hoist more than 100 kg's punching jack smoothly from the bridge floor, move to roof or flange board under the tooth piece prestressing force stretch-draw end accurate positioning installation, realize the prestressing steel bundle whole bundle stretch-draw anchor of design and standard requirement, solve heavier jack under decking (or flange board) tooth piece region manual movement, hoist and mount and take one's place, adjust difficulty and safety risk such as jack location axis and the concentric collinear control of steel bundle ground tackle; compared with the traditional continuous beam hogging moment area adopting a small-sized portable single tensioning jack construction method, the tensioning operation trolley can be used for realizing whole-bundle tensioning operation, the double-control quality of the tensioning stress and the extension of a prestressed steel strand steel bundle can be obviously improved, the tensioning stress and the extension value of each steel strand in the steel bundle are more uniform and can meet the design and specification requirements, the deviation discreteness of the stress and the extension value of each steel strand is small, the non-uniform phenomena of large stress loss of partial steel strands, over-tensioning of partial steel strands and the like caused by the traditional single tensioning steel strand are greatly avoided, the integrity of the stress of the steel strand is realized, the tensioning operation construction efficiency is high, the quality is higher, the safety risk is small, and the construction cost is lower. The trolley has a simple and reliable structure, can be processed and manufactured by locally taking materials in a construction site, changes waste into valuable, saves steel, has good applicability and is suitable for popularization and application.

Drawings

Fig. 1 is a schematic structural view of the center-penetrating jack after the shoulder-pole beam is lowered below the bridge deck or the flange plate;

fig. 2 is a schematic structural view before lowering of the shoulder pole beam;

FIG. 3 is a side view of FIG. 2;

fig. 4 is a top view of the mobile carriage.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings.

Examples

Referring to fig. 1 to 4, this embodiment provides an assembled continuous beam prestressed steel strand whole bundle stretch-draw operation platform truck, including movable frame 1, hoist 2, shoulder pole roof beam 3, through jack 4 and counter weight 5, movable frame 1 is square hollow frame, longitudinal rail 11 is fixed in the middle part of movable frame 1 upper end, the four corners department of movable frame 1 lower extreme all is provided with walking wheel 9, hoist 2 is chain block hoist, shoulder pole roof beam 3 is hung in the downside of movable frame 1 along the horizontal direction through hoist 2, the downside at shoulder pole roof beam 3 both ends is hung respectively and is equipped with through jack 4 and counter weight 5.

The upside at the middle part of carrying pole roof beam 3 has rings, and on the rings of the 3 middle part upsides of carrying pole roof beam were located to the lifting hook of hoist 2 lower extreme, the upside of punching jack 4 transversely set up steelframe 7 along, and punching jack 4 passes through 8 ligatures of reinforcing bar and is fixed in the downside of steelframe 7, and the downside in carrying pole roof beam 3 one end is connected in the rotation of rotation bolt 10 in the upper end of steelframe 7.

The upper portion of movable frame 1 has two longitudinal rail 11, has on two longitudinal rail 11 along the gliding running gear 6 of guide rail, running gear 6 adopt the automobile body frame structure that has the walking wheel can, on the upper end of hoist 2 was fixed in running gear 6, the both ends of longitudinal rail 11 still correspond and are provided with transverse guide 12, and on movable frame 1 was all fixed in at transverse guide 12's both ends, all passed through connecting rod 13 fixed connection with two longitudinal rail 11 of one end, the downside at two longitudinal rail 11 both ends all was provided with along transverse guide 12 slip transverse walking wheel 14 that sets up.

The using method comprises the following steps:

when the tensioning jack is used, firstly, the tensioning operation trolley is moved to cross a wet joint of a bridge floor to be in place, the axes of the carrying pole beam and the penetrating jack 4 are adjusted to be parallel to the wet joint of the bridge floor, the lifting appliance 2 is controlled to slowly lower the carrying pole beam 3 and the penetrating jack 4 to penetrate the wet joint of the bridge floor, the carrying pole beam 3 is rotated under a bridge deck or a flange plate to be parallel to a tensioning end face, the lifting appliance 2 is controlled to lift the carrying pole beam 3 and the penetrating jack 4 to an operation height, the axes of the rotating jacks are parallel to the axes of the steel bundles, the positions of the travelling mechanism 6 on the longitudinal guide rail 11 and the positions of the longitudinal guide rail 11 on the transverse guide rail 12 are adjusted to enable the penetrating jack 4 to be sleeved with the steel bundles for positioning installation, the tool anchor and the clamping piece are installed to integrally stretch and tension the prestressed steel bundles, and then the penetrating jack 4 is anchored and unloaded to enter the next steel bundle operation.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. Assembled continuous beam prestressing force steel bundle whole bundle stretch-draw operation platform truck, its characterized in that: the movable type lifting device comprises a movable type frame (1), a lifting appliance (2), a carrying pole beam (3), a through type jack (4) and a balance weight (5), wherein the carrying pole beam (3) is arranged on the lower side of the movable type frame (1) in a lifting mode along the horizontal direction through the lifting appliance (2), and the through type jack (4) and the balance weight (5) are respectively arranged on the lower sides of the two ends of the carrying pole beam (3) in a lifting mode.

2. The assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley according to claim 1, characterized in that: the upper portion of movable frame (1) has two longitudinal rails (11), has on two longitudinal rails (11) along the gliding running gear (6) of guide rail, the upper end of hoist (2) is fixed in on running gear (6).

3. The assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley according to claim 2, characterized in that: the two ends of the longitudinal guide rail (11) are also correspondingly provided with transverse guide rails (12), the two ends of each transverse guide rail (12) are fixed on the movable frame (1), the two longitudinal guide rails (11) at the same end are fixedly connected through connecting rods (13), and transverse traveling wheels (14) which are arranged along the transverse guide rails (12) in a sliding mode are arranged on the lower sides of the two ends of each longitudinal guide rail (11).

4. The assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley according to claim 1, characterized in that: the lifting appliance (2) is a chain block lifting appliance.

5. The assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley according to claim 1, characterized in that: the upper side of the middle part of the shoulder pole beam (3) is provided with a hanging ring, and a lifting hook at the lower end of the lifting appliance (2) is arranged on the hanging ring at the upper side of the middle part of the shoulder pole beam (3).

6. The assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley according to claim 1, characterized in that: the upper side of the center-penetrating jack (4) is transversely provided with a steel frame (7), the center-penetrating jack (4) is bound and fixed on the lower side of the steel frame (7) through a steel bar (8), and the upper end of the steel frame (7) is rotatably connected to the lower side of one end of the shoulder pole beam (3) through a rotating bolt (10).

7. The assembled continuous beam prestressed steel strand whole-bundle tensioning operation trolley according to claim 1, characterized in that: the movable frame (1) is a square hollow frame, the longitudinal guide rail (11) is fixed in the middle of the upper end of the movable frame (1), and walking wheels (9) are arranged at four corners of the lower end of the movable frame (1).

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