CN201144394Y - Large-scale girder steel shifting device - Google Patents

Abstract

The utility model discloses a large steel beam shifting device, which is characterized in that the device comprises an upper slideway and a lower slideway, wherein the lower slideway is a steel bracket, two sides of the bracket are provided with side beams, the side beams on the left side and the right side are provided with corresponding limiting baffle grooves, and a rolling shaft or a track is arranged between the left side beam and the right side beam; the upper slideway consists of a base, a rotating shaft and a top block, the base is connected with an oil cylinder, the piston end of the oil cylinder is connected with a cross rod, and the cross rod is transversely arranged in the limiting baffle grooves of the left and right side beams; the front end of the lower slideway is provided with a traction lug. Compare with existing large-scale girder steel shift unit, the utility model discloses a hydraulic pressure is step-by-step moves roof beam technique, and it is simple to have equipment, the small investment, easy operation, and the security is high, and the site operation is nimble convenient, shortens advantages such as construction cycle, has better social and economic benefits.

Description

Large steel beam shifting device

technical field

The utility model belongs to a mechanical construction device, in particular to a large-scale steel beam displacement device.

Background technique

At present, the large-scale steel girder displacement technology mainly includes rail-roller transportation and special trolley transportation methods, but these two solutions have certain limitations. During rail-roller transportation, traction points need to be set on the surface. This method is not feasible in the case of harsh geographical conditions, and it takes a long time to occupy the land after the laying of the rail row. The number of trolleys for large steel girders is small, and it takes time and transportation costs to call, and the overall price is expensive.

Utility model content

The purpose of the utility model is to provide a large-scale steel beam shifting device, which has simple structure, strong practicability and low cost.

The technical scheme of the utility model is as follows:

The large-scale steel beam displacement device is characterized in that it includes upper and lower slides, the slide is a steel bracket, side beams are arranged on both sides of the bracket, and there are corresponding limiters on the left and right side beams. The limit stop groove has one side edge as a slope or an arc, and there are rollers or tracks between the left and right beams; the upper slideway is composed of a base, a rotating shaft and a top block, and the base is located on the On the roller or track, the rotating shaft is located between the base and the top block, and the rotating shaft and the top block are connected in rotation; the base is connected with an oil cylinder, and the piston end of the oil cylinder is connected with a cross bar, and the cross rod The bar is placed horizontally in the limit retaining grooves of the left and right beams; the front end of the glide path has traction lugs.

The large-scale steel beam displacement device is characterized in that the upper surface of the top block is covered with a rubber pad.

The large-scale steel beam shifting device is characterized in that it also includes a jacking pier, the jacking pier is composed of a base and a jacking cylinder on the base, and the jacking cylinder is hoisted on the platform that needs to be displaced. Below the large steel girders.

The displacement is carried out by self-jacking. The upper and lower slides adopt steel brackets, and the upper slide is placed with steel beams. The upper slide slides on the slide through the oil cylinder to realize the displacement of the steel beams. When the oil cylinder completes a stroke , the oil cylinder is unloaded. When unloading, the rear cross bar is automatically pulled forward and dropped into the next gear, and the oil cylinder is loaded again to carry out the jacking operation until the upper slideway is pushed from one end to the other end, then the horizontal jacking is stopped, and the jacking is lowered. Raise the pier, start the vertical jacking cylinder to separate the upper and lower slides from the steel beam, and then use the winch to pull the slideway forward until the upper slideway reaches the starting position of the slideway transportation, then drop the vertical jacking cylinder to lift buttress, proceed to the next cycle. Considering the limitation of the cylinder stroke, m gears are set on the glideslope, each gear is n meters away, and one cycle can travel mxn meters.

The base of the upper slideway is connected to the rotating shaft and the top block, and the middle of the base and the top block is connected by a rotating shaft. The upper and lower parts can be rotated horizontally at any angle. During transportation, the components can be displaced vertically and laterally by rotating the upper and lower slides. , can effectively solve the transportation problem of trestle steel girders.

Compared with the existing large-scale steel beam shifting device, the utility model adopts hydraulic stepping beam shifting technology, which has the advantages of simple equipment, less investment, easy operation, high safety, flexible and convenient on-site construction, and shortened construction period. It has good social and economic benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the walking principle of the upper slide of the utility model.

Detailed ways

The large-scale steel beam shifting device includes upper and lower glideways 1 and 2. The glideway 2 is a steel bracket with side beams 3 on both sides of the bracket, and the side beams 3 on the left and right sides have corresponding Corresponding limit stop groove 4, there is paving roller shaft 5 between left and right side beams 3; Described upper slideway 1 is made up of base 6, rotating shaft 7, top block 8, and base 6 is placed on roller shaft 5 On the top, the rotating shaft 7 is located between the base 6 and the top block 8, and the rotating shaft 7 and the top block 8 are connected in rotation; the base 6 is connected with an oil cylinder 9, and the piston end of the oil cylinder 9 is connected with a cross bar 10, and the cross bar 10 is horizontally placed in the limit stop groove 4 of the left and right side beams 3; the front end of the glideway 2 has a traction ear 11.

The upper surface of the top block 8 is cushioned with a rubber pad. The jacking pier 13 is composed of a base 14 and a jacking cylinder 12 on the base 14, and the jacking cylinder 12 is hoisted under a large steel beam that needs to be displaced.

construction process:

1. Shift construction

(1) Fabrication of upper and lower slopes and buttresses

The upper and lower glideways 1 and 2 and the jacking pier 13 are all welded with channel steel and steel plate in the form of a box girder. The upper and lower slides 1 and 2 and the jacking pier 13 are made into independent units. When the steel beam is to be transported, the upper slide 1 and the jacking pier 13 are connected to the steel beam, and the upper and lower slides 1 and 2 are connected to the roof. Proceed to transport the steel girder with oil cylinder 9.

(2) Steel beam jacking

When the steel beam is lifted, the jacking pier 13 during transportation is used. A 200t jacking cylinder 12 is arranged on each jacking pier 13, and a rubber pad is added on the top of the jacking pier 13 to prevent damage to the steel beam.

After the steel beam is jacked up, put it into the upper and lower slides 1 and 2 for load bearing, remove the assembly support platform, process the butt joint of the lower flange plate at the heat treatment component, and repaint.

(3) The upper and lower slides are in place and fixed

After jacking up the trestle steel girder for a certain distance, place it on the upper and lower slides 1 and 2. The upper slide 1 is connected to the trestle steel girder by clamping, and the jacking pier 13 is connected to the trestle steel girder by suspension During transportation, the jacking pier 13 advances together with the trestle steel girder, and the trestle steel girder is lowered after the placement position is aligned, and the upper slideway 1, the jacking pier 13 and the trestle steel girder are clipped and fastened.

A Φ60mm round steel is laid every 100mm on the sliding surface between the upper and lower slideways 1 and 2 as the rolling shaft, and rolling friction is used instead of sliding friction to reduce resistance.

The contact part between the upper slide 1 and the steel beam of the trestle is covered with rubber pads to avoid damage to the anti-corrosion surface of the trestle. The centers of the upper and lower slides 1 and 2 are in the same direction as the displacement. Firmness, whether the upper and lower slides 1 and 2 are parallel to each other and consistent with the displacement direction, and whether the trestle steel girder is leveled.

(4) Check and adjust

After the upper and lower slideways 1 and 2 and the jacking pier 13 are installed, slowly lower the steel girder, pay attention to the balance of all parties when lowering the steel beam, and check the alignment between the steel beam and the upper and lower slideways 1 and 2 and the jacking pier 13 again. Connection condition, after passing the shift operation.

(5) Shift construction

Two 25-ton oil cylinders are used for horizontal jacking. Considering the limitation of the cylinder stroke, six limit stop grooves 4 are set on the glideway 2, each interval is 0.5 meters, and one cycle can travel 3 meters. When the oil cylinder 9 jacks After completing a stroke, the oil cylinder 9 is unloaded. When unloading, the rear cross bar 10 is automatically moved forward by a limit stop groove 4, and the oil cylinder 9 is loaded again to carry out the jacking operation until the upper slideway 1 is moved forward by the slideway 2. Stop the horizontal jacking operation after one end is pushed to the other end. Put down the jacking pier 13, start the vertical jacking cylinder 12 to separate the upper and lower slides 1 and 2, and then use the winch to pull the slide 2 forward until the upper slide 1 reaches the starting position of the slide 2, and then drop vertically The jacking cylinder 12 packs up the jacking pier 13, and carries out the horizontal jacking operation of the next cycle.

(6) Steel beam displacement direction conversion

When the steel girder is longitudinally transported to the turning position, the beam section is jacked up. At this time, the direction of the upper and lower slides 1 and 2 is adjusted to complete the turning, and the jacking work is carried out again until the destination.

Claims (3)

1, big section steel beam shift unit, it is characterized in that including upper and lower slideway, described glide path is an iron and steel support, there is curb girder the support both sides, corresponding spacing retaining groove is arranged on the curb girder of described left and right side, spacing retaining groove has a side along for slope or arc, and roller bearing or track are arranged between the left and right curb girder; Described sliding way is made up of pedestal and rotating shaft, jacking block, and pedestal is positioned on roller bearing or the track, and rotating shaft is rotationally connected between rotating shaft and the jacking block between pedestal and jacking block; Be connected with oil cylinder on the described pedestal, described oil cylinder piston end is connected with cross bar, and described cross bar is horizontal in the spacing retaining groove of left and right curb girder; The glide path front end has the traction ear.

2, big section steel beam shift unit according to claim 1 is characterized in that being lined with rubber pad on the described jacking block upper surface.

3, big section steel beam shift unit according to claim 1 is characterized in that also comprising the jacking buttress, and described jacking buttress is made up of the jacking cylinder on base and the base, and described jacking cylinder is lifted on needs the big section steel beam of displacement below.