CN211079937U

CN211079937U - Long platform guy cable hanging basket striding toothed plate walking device

Info

Publication number: CN211079937U
Application number: CN201921850838.4U
Authority: CN
Inventors: 赵延靖; 王仕琦; 徐丰年; 张瑜
Original assignee: Shandong Fengnian Road And Bridge Steel Structure Co ltd
Current assignee: Shandong Fengnian Road And Bridge Steel Structure Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-24
Anticipated expiration: 2029-10-31

Abstract

The to-be-solved problem of the utility model is to provide a pinion rack walking device is striden to long platform guy cable string basket, can make long platform guy cable string basket walking bottom the bridge that has the protrusion formula pinion rack. The back section of each basket hanging girder is provided with at least two groups of back pressure roller assemblies capable of alternately lifting and pressing the bottom of the bridge along the length direction.

Description

Long platform guy cable hanging basket striding toothed plate walking device

Technical Field

The utility model relates to a long platform guy cable hangs basket construction field, concretely relates to long platform guy cable hangs basket and strides pinion rack running gear.

Background

The long platform guy cable hanging basket is a guy cable hanging basket which runs by the balance of back end back pressure rollers, because the center of gravity of the guy cable hanging basket structure is at the front end, the back end must set the back pressure rollers to control the balance at the bottom of the bridge during running, and the running mode of the domestic long platform guy cable hanging basket is as follows: the front end C-shaped hanging legs slide on the top surface of the bridge, and the back end is additionally provided with back pressure rollers at the bottom of the bridge. Wherein, this form hang the basket and only be applicable to: the conventional cable-stayed anchor head of the cable-stayed bridge is embedded in a beam body of the cable-stayed bridge, and the cable-stayed bridge is not suitable for a concave-convex bridge with an anchor head toothed plate to walk by adopting back-end back pressure.

The cross-sectional rigidity of the bridge structure is weakened by the sinking of the anchor head of the stay cable, and in order to disperse local stress at the anchor head of the stay cable when some cable-stayed bridges are designed, as shown in figure 1, the tooth block at the bottom of the bridge is designed to be exposed. The design position of a longitudinal beam of a main truss of the guyed cradle needs to correspond to a stay cable of a cable-stayed bridge, so that the counter force of a walking system is transmitted to the main truss at the rear end of the cradle. The protruded toothed plates at the bottom of the stayed-cable bridge occupy the space of the back-pressure walking rollers, so that the existing 'fixed' and 'rotary' back-pressure rollers can not enable the stayed-cable hanging basket to normally slide. The exposed toothed plate can block the hanging basket which runs by means of back end back pressure, and the back pressure roller which runs by the back end of the conventional hanging basket cannot run. In order to walk on the convex toothed plate bridge, as shown in fig. 2, the left side and the right side of the hanging basket are respectively provided with 2C-shaped hanging legs, and the hanging basket can only walk after the rear end is added with a balance weight. However, the walking of the double hanging legs is limited by the space position of the stayed-cable station of the bridge, so that the design is very difficult and the cost is increased greatly.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a pinion rack walking device is striden to long platform guy cable string basket, can make long platform guy cable string basket walking bottom the bridge that has the protrusion formula pinion rack.

The utility model discloses a realize through following technical scheme:

the long platform guyed cradle striding toothed plate walking device comprises cradle main beams positioned on the left side and the right side below the bottom of a bridge, wherein at least two groups of back pressure roller assemblies capable of alternately lifting and pressing the bottom of a back pressure bridge are arranged at the rear section of each cradle main beam along the length direction of the cradle main beam.

Further, the back pressure roller components are two groups, each group of back pressure roller components comprises a jacking walking wheel frame, a jacking support rod and a lifting device arranged on the hanging basket main beam, a plurality of walking rollers are arranged on the upper portion of the jacking walking wheel frame through a walking wheel shaft I, the lower portion of the jacking walking wheel frame is hinged to the top end of the jacking support rod through a walking wheel shaft II, and the jacking support rod is arranged on the lifting device in a matched mode.

Furthermore, the lifting device is installed inside the basket hanging main beam and comprises a locking anchor beam and two lifting jacks, the two lifting jacks are distributed on the left and right sides and fixedly installed on the bottom of the basket hanging main beam, the lower portion of the locking anchor beam is fixedly installed on movable top heads of the two lifting jacks, and the jacking stay rod penetrates through the basket hanging main beam and is installed on the locking anchor beam in a matched mode.

Furthermore, the jacking stay bar is provided with a plurality of pin holes along the length direction, the jacking stay bar penetrates through the locking anchor beam, and a locking pin shaft I which penetrates through the pin holes in a matched mode is transversely inserted into the locking anchor beam.

Furthermore, the device also comprises a standby locking pin shaft II.

Compared with the prior art, the utility model the beneficial effect who gains as follows:

1. the back pressure roller components positioned in the front and the back can work alternately: when the front back pressure roller assembly meets the toothed plate group, the back pressure roller assembly positioned at the back rises to be pressed at the bottom of the bridge and is stressed, the back pressure roller assembly positioned at the front descends, the guy rope hanging basket continues to walk, the back pressure roller assembly positioned at the front rises to be pressed at the bottom of the bridge after crossing the toothed plate group, and the back pressure roller assembly positioned at the back descends, so that the back pressure roller assembly can also cross the toothed plate group;

2. the utility model can solve the problem that the back-pressure roller crosses the toothed plate to walk at the back end of the guy rope hanging basket by adopting the alternative back-pressure roller assembly to walk;

3. the utility model discloses avoided adopting two to hang legs, rear end increase the guy cable of counter weight and hung basket design, not only guaranteed not to increase the dead weight, practiced thrift the cost greatly moreover.

Drawings

Fig. 1 is a longitudinal structural schematic view of a cable-stayed bridge with a convex toothed plate in the prior art;

FIG. 2 is a longitudinal structure diagram of a double-leg hanging basket in the prior art;

fig. 3 is a schematic view of a three-dimensional structure of the back pressure roller assembly of the present invention;

fig. 4 is a schematic view of the back pressure roller assembly according to the present invention;

fig. 5 is a schematic view of the working state 1 of the long platform guyed hanging basket jump toothed plate walking device of the present invention;

fig. 6 is a schematic view of the working state 2 of the long platform guyed cradle jump toothed plate walking device of the present invention;

in the figure: 1. hang basket girder, 2, jacking walking wheel carrier, 3, jacking vaulting pole, 4, walking gyro wheel, 5, locking anchor beam, 6, lifting jack, 7, locking round pin axle I, 8, locking round pin axle II, 9, salient pinion rack.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Taking the long platform guyed cradle to construct the bridge as an example, the cradle girder 1 of the left and right sides of the guyed cradle is positioned below the bottom of the bridge, the left and right sides of the front end of the guyed cradle are respectively matched on the walking track of the bridge through C-shaped hanging legs, and in order to smoothly cross the protruding slab tooth at the bottom of the bridge, the rear section of each cradle girder 1 is provided with two groups of back pressure roller components which can alternately lift and press the bottom of the bridge at a distance of 2.9m in front of and behind along the length direction.

As shown in fig. 3 and 4, each set of back pressure roller assemblies includes a lifting walking wheel frame 2, a lifting stay bar 3 and a lifting device installed on the main beam 1 of the hanging basket. Four walking rollers 4 are installed through walking shaft I on the upper portion of jacking walking wheel carrier 2, and in order to guarantee the rolling stability of walking roller in the bridge bottom, four walking rollers 4 are two rows and are two and arrange the distribution. The lower part of the jacking travelling wheel frame 2 is hinged to the top end of the jacking stay bar 3 through a travelling wheel shaft II, and a plurality of transversely penetrating pin holes are processed in the jacking stay bar 3 along the length direction.

The lifting device is installed in the hanging basket main beam 1 and comprises a locking anchor beam 5 and two lifting jacks 6, the two lifting jacks 6 are distributed and fixedly installed at the bottom of the hanging basket main beam 1 in the left-right direction, and the lower portion of the locking anchor beam 5 is fixedly installed on the movable top heads of the two lifting jacks 6. The jacking stay bar 3 can penetrate through the main beam of the cradle and the locking anchor beam 5 and can move up and down relatively. And a locking pin shaft I7 which is matched with and penetrates through the pin hole is transversely inserted into the locking anchor beam 5. The jacking stay bar and the locking anchor beam can be locked relatively, and the locking anchor beam is driven to lift by the two lifting jacks, so that the jacking stay bar moves up and down. And a spare locking pin shaft II 8 is also arranged. When the lifting jack pushes the jacking support rod to rise to the maximum stroke, the walking roller is not pressed against the lower part of the bridge, the locking pin shaft II 8 can be inserted into a pin hole in the jacking support rod, which is positioned above the bottom of the basket hanging main beam 1, so that the gravity of the back pressure roller assembly is directly transferred to the bottom of the basket hanging main beam 1 through the pin shaft II, the pin shaft I is pulled out, the lifting jack drives the locking anchor beam to fall, the pin shaft I is inserted into the locking anchor beam and the corresponding pin hole again, the gravity of the back pressure roller assembly returns to the locking anchor beam again, and the walking roller is driven to continue to rise until the back pressure is at the bottom of the bridge through the rising of the lifting jack.

The utility model discloses a longplatform guy cable hangs basket and strides jump pinion rack running gear concrete work process as follows:

first, the concrete reaches intensity stretch-draw suspension cable, and the backpressure roller components and the string basket string leg atress simultaneously that are located the rear make string basket whole decline 500mm down, at the in-process of advancing, as shown in fig. 5, when the backpressure roller components that are located the place ahead meet the pinion rack, use the backpressure roller components backpressure that is located the rear at bridge bottom atress, the jack off-load of the backpressure roller components that will be located the place ahead, make the backpressure roller components in the place ahead wholly descend and avoid the pinion rack.

And secondly, the cradle advances for a certain distance, when the back pressure roller assembly positioned at the rear meets the toothed plate, the back pressure roller assembly positioned at the front is pressed against the bottom of the bridge to be stressed, and as shown in fig. 6, a lifting jack of the back pressure roller assembly positioned at the rear is unloaded, so that the back pressure roller assembly at the rear integrally descends to avoid the toothed plate.

The third step: the back pressure roller assembly in front is stressed and continues to walk until the next working position.

The fourth step: the pressing roller assembly and the hanging basket hanging legs positioned in the front are simultaneously stressed to enable the hanging basket to be lifted to a designed working position by 500mm, and the next section of pouring concrete is started.

Claims

1. The long platform guyed cradle striding toothed plate walking device comprises cradle main beams positioned on the left side and the right side below the bottom of a bridge, and is characterized in that at least two groups of back pressure roller assemblies capable of alternately lifting and pressing the bottom of the bridge are arranged at the rear section of each cradle main beam along the length direction of the cradle main beam.

2. The long platform guy cable basket spanning toothed plate walking device according to claim 1, wherein the number of the back pressure roller assemblies is two, each back pressure roller assembly comprises a jacking walking wheel frame, a jacking stay bar and a lifting device installed on the basket hanging main beam, a plurality of walking rollers are installed on the upper portion of the jacking walking wheel frame through a walking wheel shaft I, the lower portion of the jacking walking wheel frame is hinged to the top end of the jacking stay bar through a walking wheel shaft II, and the jacking stay bar is installed on the lifting device in a matched mode.

3. The long platform guy cable basket spanning toothed plate walking device according to claim 2, wherein the lifting device is installed inside the basket main beam, the lifting device comprises a locking anchor beam and two lifting jacks, the two lifting jacks are distributed and fixedly installed on the bottom of the basket main beam in a left-right mode, the lower portion of the locking anchor beam is fixedly installed on movable top heads of the two lifting jacks, and the jacking stay rods penetrate through the basket main beam and are installed on the locking anchor beam in a matched mode.

4. The long platform guy cable cradle jump toothed plate walking device according to claim 3, wherein the jacking stay bar is provided with a plurality of pin holes along the length direction thereof, the jacking stay bar penetrates through the locking anchor beam, and a locking pin shaft I which is matched with and penetrates through the pin holes is transversely inserted into the locking anchor beam.

5. The long platform guy rope cradle jump toothed plate walking device according to claim 4, further comprising a spare locking pin II.