CN210086060U

CN210086060U - Suspension bridge steel truss lifting and swinging device

Info

Publication number: CN210086060U
Application number: CN201920114635.2U
Authority: CN
Inventors: 杨恒; 朱立山; 刘玉兰; 杨晓
Original assignee: Hunan Road and Bridge Construction Group Co Ltd
Current assignee: Hunan Road and Bridge Construction Group Co Ltd
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2020-02-18
Anticipated expiration: 2029-01-23

Abstract

The utility model discloses a suspension bridge steel longeron lifts by crane, swing and move device, including installing the hoist engine that lifts by crane at the cable tower top, install on the river levee and swing and hang the hoist engine, one end is connected the other end with the hoist engine and is passed through the anchor cable and press from both sides the hoist cable of fixing on the main push-towing rope, be located the anchor cable and press from both sides the preceding top block that fixes on the main push-towing rope and hang the hoist cable through the main push-towing rope that hangs, hang the lower coaster on the hoist cable, hang the hoist on the coaster down, the regulation hoist cable and the fixed length cable of connecting hoist and steel longeron, one end with down coaster and hoist be connected the other end and swing and hang the cable of dragging. The utility model has the advantages of good economical efficiency and high reliability.

Description

Suspension bridge steel truss lifting and swinging device

Technical Field

The utility model belongs to suspension bridge steel longeron handing equipment, concretely relates to suspension bridge steel longeron lifts by crane, swings and moves the device.

Background

There are a number of devices currently available for lifting steel trusses onto trestles. The common steel wire rope rides on the main cable clamp and hangs the upper pulley, and the upper pulley is easy to be pulled to deviate and deflect and is influenced by a cable clamp rope groove, so that the deviation angle is not too large when the upper pulley is hung; the lifting appliance usually adopts a carrying pole beam with adjustable lifting point position, and the beam is generally very heavy because of bearing very large bending moment; and the steel strand is used for hoisting, so that the speed is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at that suspension bridge steel longeron that economic nature is good, the reliability is high lifts by crane, swings and moves the device.

Realize the utility model discloses the technical scheme that the purpose was adopted as follows:

the utility model provides a suspension bridge steel longeron lifts by crane, swing and move the device, including installing the hoist engine that lifts by crane at the cable tower top, install on the river levee and swing and hang the hoist engine, one end is connected the other end with the hoist engine and is fixed the hoist cable on the main push-towing rope through the anchor cable clip, be located the anchor cable clip preceding fix on the main push-towing rope and hang the last coaster of hoist cable through the main push-towing rope, hang the lower coaster on the hoist cable, hang the hoist on the coaster down, connect the regulation hoist cable and the fixed length hoist cable of hoist and steel longeron, one end with down coaster and hoist be connected the other end and swing the hoist cable that hangs the hoist engine and be connected.

The lifting appliance is connected with the steel truss girder by adjusting the lifting appliance cable and the fixed-length lifting appliance cable to form a triangular tension hanging mode.

And the adjusting lifting appliance cable is connected with the steel truss girder through an adjusting device.

The hanger is composed of a secondary hinge plate and a main hinge plate which are movably connected through a hanger pin shaft, and the secondary hinge plate and the main hinge plate are respectively provided with a rope protecting wheel for hanging the adjusting hanger rope and the fixed-length hanger rope.

The first end of the adjusting lifting appliance cable and the two ends of the fixed-length lifting appliance cable are connected with the steel truss girder through a lifting appliance cable anchorage device, and the other end of the adjusting lifting appliance cable is connected with the steel truss girder through the adjusting device.

The adjusting device is composed of an upper connector and a lower connector which are respectively provided with a rope protecting wheel, and an adjusting rope wound on the rope protecting wheel in the upper connector and the lower connector, and the upper connector and the lower connector are respectively connected with the second end of the adjusting lifting appliance rope and the steel truss girder.

Advantageous effects

The suspension bridge steel truss lifting and swinging device of the utility model quickly lifts the steel truss to the height of the trestle by operating the lifting winch to drive the lifting cable and the upper and lower pulleys, because the upper pulley is in pin joint with the main cable clamp, the torsion of the horizontal plane of the upper pulley is restrained, the unsafe torsion phenomenon can not be generated, and a large deflection angle can be realized during swinging and lifting; the swinging and pulling force acts on the middle part of the pin shaft of the lifting appliance, all forces can be ensured to be aligned with the node, and extra deflection bending moment and torque can not be generated; the lifting appliance is composed of a primary hinging plate and a secondary hinging plate, the angle tolerance range is large, accurate operation is not needed, the adjusting lifting appliance cable and the fixed-length lifting appliance cable are in pin joint with the pin lug of the steel truss beam by utilizing the anchorage of the existing permanent lifting cable, the safety and the reliability are realized, all stressed components are under tension, no bending moment is generated, the material utilization rate is extremely high, and therefore, the whole device is light; the adjusting cable of the adjusting device is 1 smaller steel wire rope, the adjusting device is connected with the lifting appliance cable far away from the center of gravity, the length of the adjusting cable is adjusted easily when the force of the adjusting cable is reduced to be small, and the lifting appliance can be conveniently aligned with the center of gravity. The cable clamp is cast by the existing cable clamp die, so that a lot of cost is saved. Rope protecting wheels are arranged in the lifting appliance and the connector, the material is thick plate, and the lifting appliance and the connector are manufactured strictly according to the relevant specifications of the steel wire rope, so that the lifting appliance is economical and safe. All components can be repeatedly used for other large-scale hoisting.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Drawings

Fig. 1 is a schematic structural diagram of the device of the present invention.

Fig. 2 is a schematic view of the working state of the device of the present invention.

Fig. 3 to 5 are enlarged views at A, B, C in fig. 2, respectively.

Description of reference numerals:

1. hoisting winch, 2, hoisting rope, 3, upper pulley, 4, main rope clamp, 5, anchoring rope clamp, 6, lower pulley, 7, lifting appliance, 8, adjusting lifting appliance rope, 9, fixed-length lifting appliance rope, 10, adjusting device, 11, swinging, lifting and dragging rope, 12, swinging and lifting winch, 13, anchoring pin shaft, 14, lifting appliance pin shaft, 15, lifting rope anchorage, 16, upper connector, 17, lower connector, 18, adjusting rope, 19, main rope, 20, steel truss girder, 21, trestle, 22, upper pulley pin shaft, 701, secondary hinge plate, 702, main hinge plate, 703, 1601, 1701 and rope protecting wheel.

Detailed Description

The utility model provides a suspension bridge steel longeron lifts by crane, swings and moves device, as shown in fig. 1 to fig. 5, include: a hoisting winch 1 arranged on the top of the cable tower, a swinging winch 12 arranged on the river levee, a sling 2 with one end connected with the hoisting winch 1 and the other end fixed on the main cable 19 through an anchoring cable clamp 5, an upper trolley 3 which is arranged in front of the anchoring cable clamp 5 and fixed on the main cable 19 through a main cable clamp 4 and hangs the sling 2, a lower pulley 6 hung on the sling 2, a sling 7 hung on the lower pulley 6, an adjusting sling 8 and a fixed-length sling 9 which connect the sling 7 and a steel truss girder 20, and a swinging dragging cable 11 with one end connected with the lower pulley 6 and the sling 7 and the other end connected with the swinging winch 12; the adjusting sling rope 8 is connected with the steel truss girder 20 through an adjusting device 10.

And operating the hoisting winch 1 to hoist the steel trussed beams 20 to a position higher than the top surface of the trestle 21, operating the hoisting winch 11 to drag the steel trussed beams 20 to the position above the trestle 21, operating the hoisting winch 1 to place the steel trussed beams 20 on the trestle 21, and circulating the first 3 steps until all the steel trussed beams 20 are transferred to the trestle 21.

In the device of the utility model, specifically, the upper pulley 3 is hinged with the main cable clamp 4 through the upper pulley pin 22, the main cable clamp 4 is clamped on the main cable 19, and the pin can restrain the horizontal torsion of the upper pulley 3 caused by unequal forces of the movable end and the fixed end of the sling 2 at the two sides; meanwhile, because the distance between the upper pulley pin shaft 22 and the center of the pulley wheel of the upper pulley 3 is small, the swing amplitude of the upper pulley 3 caused by the river side tension generated by the sling 2 can be small enough, and the smaller the swing is, the safer the swing is.

The utility model discloses an in the device, specifically, 2 one ends of sling are fixed in the one end of anchor round pin axle 13 of anchor cable clip 5 lower extreme, and anchor cable clip 5 presss from both sides tightly on main push-towing rope 19, and 3 one ends inboard by the bridge of last coaster are connected to the anchor end of sling 2, and 3 one ends by the bridge outside of last coaster are connected to the expansion end of sling 2, so can offset and act on the most horizontal bending moment on last coaster 3, and simultaneously, main push-towing rope 19 also can be avoided to sling 2, is connected to in the hoist engine 1 that lifts by crane at cable tower top.

The utility model discloses an in the device, specifically, lower coaster 6 passes through hoist round pin axle 14 with hoist 7 and is connected, swing to hang the one end that drags cable 11 and connect at hoist round pin axle 14's middle part, all power all converge on hoist round pin axle 14 this node, are swinging the in-process, adjust hoist cable 8, fixed length hoist cable 9 atress invariant, so it is steady to swing in-process steel longeron 20.

The utility model discloses an among the device, specifically, hoist 7 is connected formation triangle-shaped through adjusting hoist cable 8 and fixed length hoist cable 9 and steel longeron 20 and is drawn the hanging mode, and wherein the one end of adjusting hoist cable 8, the both ends of fixed length hoist cable 9 are passed through hoist cable ground tackle 15 and are connected with steel longeron 20, and the other end of adjusting hoist cable 8 passes through adjusting device 10 and is connected with steel longeron 20.

The sling anchor 15, i.e. the anchor of the permanent sling, does not need additional design and can best ensure that the pin ears of the steel truss girder 20 are not damaged.

In the device of the present invention, specifically, the adjusting device 10 is composed of an upper connector 16 and a lower connector 17 which are respectively provided with

rope protecting wheels

1601, 1701, and an adjusting rope 18 which is wound on the

rope protecting wheels

1601, 1701 in the upper connector 16 and the lower connector 17, wherein the upper connector 16 and the lower connector 17 are respectively connected with the other end of the adjusting sling rope 8 and the steel truss 20. The adjusting rope 18 is much thinner than the adjusting sling 8, the stress only adjusts 1/4 of the sling 8, the adjusting sling 8 is far away from the gravity center of the steel truss beam relative to the fixed-length sling 9, and the force is far smaller than the fixed-length sling 9, so the relative position of the two ends of the adjusting rope 18 can be easily changed with small force, namely the distance between the upper connector 16 and the lower connector 17 is changed, thereby the bridge longitudinal position of the sling 7 is adjusted, the sling 7 is arranged right above the gravity center of the steel truss beam 20, and the sling 7, the adjusting sling 8 connected with the steel truss beam 20 and the fixed-length sling 9 form a triangular tension hanging mode. This mode is the most stable and efficient mechanical mode, which is attributed to the structure of the spreader 7 that is composed of 2 secondary hinge plates 701 and a primary hinge plate 702 that are movably connected by the spreader pin 14 and can adjust the angle in a large range. The secondary hinge plate 701 and the main hinge plate 702 on the lifting appliance 7 are respectively provided with a rope protecting wheel 703 for hanging and adjusting a lifting appliance rope 8 and a fixed-length lifting appliance rope 9.

Claims

1. A suspension bridge steel truss beam lifting and swinging device is characterized by comprising a lifting winch arranged at the top of a cable tower, a swinging winch arranged on a river levee, a lifting cable with one end connected with the lifting winch and the other end fixed on a main cable through an anchoring cable clamp, an upper tackle positioned in front of the anchoring cable clamp and fixed on the main cable through the main cable clamp and used for hanging the lifting cable, a lower tackle hung on the lifting cable, a lifting appliance hung on the lower tackle, an adjusting lifting cable and a fixed-length lifting cable which are connected with the lifting appliance and the steel truss beam, and a swinging dragging cable with one end connected with the lower tackle and the lifting appliance and the other end connected with the swinging winch; the upper pulley is hinged with the main cable clamp through an upper pulley pin shaft, and the main cable clamp is clamped on the main cable; one end of the sling is fixed at one end of an anchoring pin shaft at the lower end of the anchoring cable clamp, the anchoring cable clamp is clamped on the main cable, the anchoring end of the sling is connected with one end of the upper pulley close to the inner side of the bridge, and the movable end of the sling is connected with one end of the upper pulley close to the outer side of the bridge; the lower pulley is connected with the lifting appliance through a lifting appliance pin shaft, and one end of the swinging dragging guy cable is connected to the middle part of the lifting appliance pin shaft; the lifting appliance is connected with the steel truss girder through an adjusting lifting appliance cable and a fixed-length lifting appliance cable to form a triangular tension hanging mode, wherein one end of the adjusting lifting appliance cable and two ends of the fixed-length lifting appliance cable are connected with the steel truss girder through a lifting appliance cable anchorage, and the other end of the adjusting lifting appliance cable is connected with the steel truss girder through an adjusting device.

2. The device for lifting and swinging the steel truss girder of the suspension bridge as claimed in claim 1, wherein the hanger is composed of a secondary hinge plate and a main hinge plate which are movably connected through a hanger pin shaft, and the secondary hinge plate and the main hinge plate are respectively provided with a rope protecting wheel for hanging the adjusting hanger rope and the fixed-length hanger rope.

3. The device for lifting and swinging the steel truss girder of the suspension bridge as claimed in claim 2, wherein the adjusting device comprises an upper connector and a lower connector which are respectively provided with a rope protecting wheel, and an adjusting rope wound on the rope protecting wheel of the upper connector and the lower connector, and the upper connector and the lower connector are respectively connected with the second end of the adjusting sling rope and the steel truss girder.