CN211848951U

CN211848951U - Accurate aligning and mounting device for box bridge prestressed tendons

Info

Publication number: CN211848951U
Application number: CN201922259812.9U
Authority: CN
Inventors: 刘宇昆; 陈小兵; 高成果; 崔中秋
Original assignee: MCC Tiangong Group Corp Ltd
Current assignee: MCC Tiangong Group Corp Ltd
Priority date: 2019-12-14
Filing date: 2019-12-14
Publication date: 2020-11-03
Anticipated expiration: 2029-12-14

Abstract

The utility model discloses a box bridge prestressed tendon accurate alignment installation device, which relates to the technical field of bridge construction, and comprises a door-shaped frame, an upper end beam, threading equipment, a wire conduit and a conical lead head, wherein the beam and an oblique supporting beam can improve the strength of the door-shaped frame; the lifting point of the lifting chain is arranged on one side of the upper end beam close to the portal frame, so that a lifter can be conveniently installed, and the threading device can be adjusted during threading; flanges are welded at two ends of the conduit, and the threading device, the conduit and the preformed hole are connected by virtue of the flanges, so that the centering of the conduit, the conduit and the preformed hole is ensured; the operation hole and the observation hole are convenient for observing the strand-threading operation process and are timely adjusted, so that the strand-threading efficiency is improved; the device can be repeatedly used for many times, and can be operated by only 2-3 people, so that the installation period is greatly shortened, and the installation cost is reduced.

Description

Accurate aligning and mounting device for box bridge prestressed tendons

Technical Field

The utility model relates to a bridge construction technical field, more specifically say, the utility model relates to an accurate counterpoint installation device of box bridge prestressing tendons.

Background

The traditional steel bar prestress strand penetrating mode adopts manual or winch traction, a rope penetrates into a pipeline during strand penetrating, the steel wire is led out by the rope, the other end of the steel wire is connected with a steel strand dragging head, and the steel strand is pulled out by the winch. The construction method mainly has the following problems: 1. the process is complicated: each prestressed reinforcement needs to repeat the procedures of threading a guide rope, threading a steel wire and pulling out the prestressed reinforcement, the operation is complicated, the multi-person cooperative operation is needed, the efficiency is low, and the cost is high; 2. the rework rate is high: the leading rope and the steel wire are easy to break and be unbound in the traction process, so that the traction process is reworked; 3. space in the prepared hole is occupied: the steel wire itself and the binding joint need to occupy a large amount of intraductal space, and under the more condition of intraductal prestressing steel, occupy a large amount of intraductal spaces and influence the installation operation, greatly increased installation degree of difficulty and efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve a plurality of problems existing in the process of penetrating and installing prestressed reinforcements, the utility model provides a box bridge prestressed reinforcement accurate alignment installation device, which comprises a door-shaped frame, an upper end beam, a threading device, a conduit and a conical lead head, wherein the door-shaped frame is of an inverted V-shaped structure, and the upper end beam is welded at the top end of the door-shaped frame; the threading equipment consists of a power motor and a threading device, the threading equipment is connected with the door-shaped frame through a sling chain, the wire guide pipe is arranged between the threading equipment and the reserved hole, the wire guide pipe is made of seamless steel pipes, and flanges are welded at two ends of the wire guide pipe;

preferably, the door-shaped frame comprises a left supporting leg and a right supporting leg, a cross beam is welded between the left supporting leg and the right supporting leg, and the supporting legs and the cross beam at the upper end are respectively welded with an inclined supporting beam;

preferably, a lifting chain lifting point is arranged on one side, close to the door type frame, of the upper end cross beam, and a lifting point is arranged on one side, far away from the door type frame, of the upper end cross beam;

preferably, the upper half part of the conduit is provided with an intermittent operation hole and an observation hole;

preferably, the front half part of the conical lead head is conical, and the rear half part of the conical lead head is of a threaded tightening contraction structure and consists of four-petal threaded wedge-shaped clamping pieces and nuts.

The utility model discloses at least, include following beneficial effect: the cross beam and the inclined support beam can improve the strength of the portal frame; the lifting point of the lifting chain is arranged on one side of the upper end beam close to the portal frame, so that a lifter can be conveniently installed, and the threading device can be adjusted during threading; flanges are welded at two ends of the conduit, and the threading device, the conduit and the preformed hole are connected by virtue of the flanges, so that the centering of the conduit, the conduit and the preformed hole is ensured; the operation hole and the observation hole are convenient for observing the strand-threading operation process and are timely adjusted, so that the strand-threading efficiency is improved; the device can be repeatedly used for many times, and can be operated by only 2-3 people, so that the installation period is greatly shortened, and the installation cost is reduced.

Drawings

Fig. 1 is the box bridge prestressed tendons accurate alignment installation device's structural schematic diagram.

Fig. 2 is box bridge prestressing tendons accurate counterpoint installation device's portal support top view.

Fig. 3 is box bridge prestressing tendons accurate counterpoint installation device's door type support side view.

Fig. 4 is box bridge prestressing tendons accurate counterpoint installation device wear to restraint device top view.

Fig. 5 is a schematic view of the structure of the lead head of the present invention.

The labels in the figure are: the device comprises supporting legs 1, a cross beam 2, an inclined support 3, a sling chain hoisting point 4, a sling chain 5, a threading device 6, a power motor 8, a conduit 9, an operation hole 10 and an observation hole 11.

Detailed Description

The invention is described in further detail in connection with the figures and examples below to enable those skilled in the art to practice the invention in light of the description, it being understood that the terms "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1-4, the utility model provides a box bridge prestressed tendon accurate alignment installation device, which comprises a door-shaped frame, an upper end beam 2, threading equipment, a conduit 9 and a conical lead head, wherein the door-shaped frame is in an inverted V-shaped structure, and the upper end beam 2 is welded on the top end of the door-shaped frame; the threading equipment consists of a power motor 8 and a threading device 7, the threading equipment is connected with the door-shaped frame through a hanging chain 6, the conduit 9 is arranged between the threading equipment and the preformed hole, the conduit 9 is made of seamless steel pipes, and flanges are welded at two ends of the conduit.

Preferably, the door-shaped frame comprises a left supporting leg 1 and a right supporting leg 1, a cross beam is welded between the left supporting leg 1 and the right supporting leg 1, and the supporting legs and the cross beam at the upper end are respectively welded with an inclined supporting beam 3;

preferably, a lifting chain lifting point 4 is arranged on one side, close to the door type frame, of the upper end cross beam 2, and a lifting point 5 is arranged on one side, far away from the door type frame, of the upper end cross beam;

preferably, the upper half part of the conduit 9 is provided with an intermittent operation hole 10 and an observation hole 11;

The utility model provides a pair of accurate counterpoint installation device of box bridge prestressing tendons's theory of operation as follows: the portal frame is welded by steel pipes to form a triangle, the height of the portal frame is better than that of the highest threading hole, when in use, the left and right support legs stand on the ground, the top end of the portal frame is supported on bridge concrete by an upper end beam to form a stable structure, threading equipment consists of a power motor and a threading device, the interior of the threading device is of a roller type thread clamping structure, the motor transmits power to the prestressed reinforcement, the motor controls forward rotation and reverse rotation through the controller to enable the prestressed reinforcement to move forward and backward, the threading equipment is connected with the door frame through the sling chain, the threading device is controlled by the lifter to be aligned with the reserved hole, a semi-open type conduit is arranged between the threading device and the reserved hole, the conduit is made of seamless steel tubes, flanges are welded at two ends of the conduit and are respectively fixed with the threading device and the reserved hole through bolts, and a intermittent operation opening is formed in the upper portion of the conduit and is used for carding prestressed reinforcements, cutting off the prestressed reinforcements and observing the penetration condition of the prestressed reinforcements; the utility model discloses a prestressing force steel end facility toper lead head, lead head front end is the toper, and the end is bushing type extrusion subassembly, penetrates prestressing force steel piece lead head end during the use, and rotatory sleeve pipe is locked.

The prestressed reinforcement penetrating device is used for penetrating prestressed reinforcements, each reserved opening is only required to be adjusted by the center of a pipeline once, penetrating operation can be rapidly carried out after the device is in place, the prestressed reinforcements in the unified reserved holes are adjusted to the next reserved hole after being installed once, traditional rope traction is omitted, and penetrating efficiency is improved; the personnel and the material that drop into can reduce by a wide margin, and the device installation occupies the operation face lessly, and the device can used repeatedly many times, only needs 2-3 people to operate, shortens installation cycle greatly, reduces installation cost.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and examples shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. The utility model provides an accurate aligning installation device of box bridge prestressing tendons which characterized in that: the wire guiding device comprises a door-shaped frame, an upper end beam (2), threading equipment, a wire guiding pipe (9) and a conical lead head, wherein the door-shaped frame is of an inverted V-shaped structure, and the upper end beam (2) is welded to the top end of the door-shaped frame; threading equipment comprises power motor (8) and threading apparatus (7), and threading equipment passes through chain sling (6) and is connected with the door type frame, sets up between threading equipment and the preformed hole conduit (9), conduit (9) adopt seamless steel pipe to make, both ends welded flange.

2. The device for accurately aligning and mounting the prestressed tendons of the box bridge according to claim 1, wherein the portal frame comprises a left supporting leg and a right supporting leg (1), a cross beam is welded between the left supporting leg and the right supporting leg (1), and the supporting legs and the cross beam at the upper end are respectively welded with an inclined supporting beam (3).

3. The device for accurately aligning and installing the prestressed tendons of the box bridge according to claim 1, wherein a sling chain sling point (4) is arranged on one side of the upper end cross beam (2) close to the portal frame, and a sling point (5) is arranged on one side of the upper end cross beam far away from the portal frame.

4. The device for accurately aligning and installing the prestressed tendons of the box bridge according to claim 1, wherein the upper half part of the conduit (9) is provided with an intermittent operation hole (10) and an observation hole (11).

5. The device for accurately aligning and installing the prestressed ribs of the box bridge as claimed in claim 1, wherein the front half part of the tapered lead head is conical, and the rear half part of the tapered lead head is a threaded tightening and contraction structure and comprises four-piece threaded wedge-shaped clamping pieces and nuts.