CN209907211U - Girder steel beam device that falls - Google Patents

Abstract

The utility model provides a girder steel beam device that falls, belongs to bridge construction equipment field, its characterized in that: comprises a steel beam, a clamping device and a jack; the jack is inversely fixed at the lower end of the end beam of the steel beam through the clamping device. The clamping device is fixed on the end cross beam of the steel beam, the steel cushion block below the jack is moved out every time, the jack does not need to be dismantled, the construction time is saved, and the construction difficulty is reduced. Especially for the girder falling construction of steel girders crossing a business line, the number of the occupied skylight points can be reduced. The beam falling speed and the safety of the steel beam are greatly improved, and the optimization effect is obvious; clamping device makes the jack fix on the end crossbeam temporarily through filling board and girder steel side surface contact, and the rethread bolt top tightly fills the rubber slab on board surface and makes, can protect the finish paint of girder steel, and need not reserve the connecting hole in advance on the girder steel or weld, has reached the purpose of protection girder steel, has improved the commonality.

Description

A steel beam dropping device

technical field

The utility model belongs to the field of bridge construction devices, in particular to a steel beam dropping device.

Background technique

With the rapid development of traffic, the problem of insufficient traffic space on urban roads is becoming more and more serious. Steel girder bridges have become one of the effective ways to cross existing lines in areas with complex lines due to their large applicable span and convenient transportation and installation. Various large and medium-sized cities are widely used across the operating highways, railways, subways, etc. The new steel beams are mostly assembled outside the line, and then pushed and moved, and then the whole beam is dropped. How to safely and accurately place the steel girder on the pier support is a major difficulty in the construction of a steel girder bridge under the condition that the traffic flow is affected as little as possible.

The main technology of the steel beam falling beam is: after the steel beam is assembled, the unloading block is arranged under the end beam of the steel beam, and the jack for lifting is set on the top surface; The dead weight is changed from the support of the pads on both sides to the support of the jack, that is, the steel beam is separated from the steel pads on both sides; the top steel pads on both sides are removed manually; the oil pump is turned on, the jack is returned to the oil, and the beam body falls and is supported on the On the steel pads on both sides; remove the jack, then take out a layer of steel pads under the jack, lower the height of the steel pads under the oil top, and complete a beam drop cycle; reinstall the jack, repeat the above process, and complete the beam drop operation. Finally the formal supports are installed and anchored. The above-mentioned beam-dropping technique requires removing the jack on top of the steel block (a single weight is about 400kg) when removing a layer of steel block under the jack. Since there is a steel beam directly above, large equipment such as a crane cannot be used when removing the jack. , can only be removed manually by using the inverted chain, which is time-consuming and labor-intensive, increases the difficulty of construction, and poses a greater safety hazard to the steel beam itself and the lines being crossed.

SUMMARY OF THE INVENTION

The utility model aims to solve the above problems and provides a steel beam dropping device with a simple structure.

The steel beam dropping device of the utility model comprises a steel beam, a clamping device and a jack; the jack is inverted and fixed on the lower end of the end beam of the steel beam through the clamping device; In the beam process, the repeated displacement operation of the jack is omitted, the workload is reduced, and the construction efficiency is effectively improved.

In the steel beam dropping device of the utility model, the clamping device comprises a base steel plate; two sides of the base steel plate are symmetrically arranged with fixing blocks; the fixing blocks comprise a horizontally arranged plywood and a vertical plate arranged perpendicular to the plywood The splint is fixedly connected with the vertical plate; the splint and the aforementioned base steel plate are symmetrically provided with a number of fixed through holes; the vertical plate is provided with a number of clamping through holes; the vertical plate corresponding to the clamping through holes A nut is fixedly arranged on the inner wall; the splint and the base steel plate are fixedly connected to the nut through a fixing through hole through a bolt; a clamping bolt is arranged in the clamping through hole. A fixed block is respectively set on both sides of the base steel beam, and the fixed blocks on both sides form a track groove shape through the horizontally arranged splint and the vertically set upright plate. It is fixed with the clamping device; the inner side of the clamping through hole on the vertical plate is fixed with a nut. By arranging bolts in the clamping through holes and tightening the bolts, the top of the bolts presses the lower end sidewall of the end beam of the steel beam, and the bolts are tightened. The steel beam drop device is fixed on the steel beam.

In the steel beam dropping device of the utility model, a stiffening plate is arranged between the vertical plate and the clamping plate. The stability of the fixed block is improved by setting the stiffening plate, and the operation safety and service life are improved.

According to the steel beam dropping device of the utility model, rubber plates are arranged on both sides of the lower end of the end beam of the steel beam. By setting the rubber plate, the front end of the bolt is pressed against the rubber plate, so as to avoid damage to the paint and structure of the outer wall of the steel beam, and affect the appearance and durability.

In the steel beam dropping device of the utility model, a filler plate is arranged between the rubber plate and the lower end sidewall of the end beam of the steel beam; the protection of the rubber plate on the outer wall of the steel beam is enhanced by the filler plate, and a buffer plate is provided for the rubber plate The layer improves the clamping effect of the clamping device by adding protection to the outer walls of the steel beam.

In the steel beam dropping device of the utility model, the fixing through holes and the clamping through holes are arranged on the same vertical surface; the fixing through holes and the clamping through holes are arranged on the same disposal surface, which not only increases the clamping device The overall aesthetics, and only need to move up and down vertically during the installation process, which is convenient for installation and operation.

In the steel beam dropping device of the utility model, the vertical cross-sections of the vertical plates, the clamping plates and the stiffening plates are right-angled triangles, which are arranged in triangles to enhance the stability of the fixed block.

In the steel beam dropping device of the utility model, three pairs of fixing through holes are symmetrically arranged on the splint and the aforementioned base steel plate; and three clamping through holes are arranged on the vertical plate.

The steel beam dropping device of the utility model is fixed on the end beam of the steel beam through the clamping device, and each time the steel block under the jack is removed, the jack does not need to be removed, which saves construction time and reduces construction difficulty. Especially for the steel beam drop beam construction across the business line, the number of occupied skylight points can be reduced. The speed and safety of the steel beam dropping are greatly improved, and the optimization effect is remarkable; the clamping device is in contact with the side surface of the steel beam through the filling plate, and then the rubber plate on the surface of the filling plate is tightened by bolts to temporarily fix the jack on the end beam. The surface paint of the steel beam can be protected, and there is no need to reserve connection holes or welding on the steel beam in advance, so as to achieve the purpose of protecting the steel beam and improve the versatility.

Description of drawings

Fig. 1 is the structural schematic diagram of Embodiment 1 of the steel beam dropping device according to the present invention;

Fig. 2 is the front view of the clamping device of the utility model;

3 is a side view of the clamping device of the present invention;

Among them, 1- base steel plate, 2- plywood, 3- stiffening plate, 4- vertical plate, 5- rubber plate, 6- filling plate, 7- bolt, 8- nut, 9- jack, 10- spacer, 11- steel Beams, 12 - piers.

Detailed ways

The beam dropping device for the steel beam 11 of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

The steel beam dropping device of the present invention, as shown in FIG. 1 , includes a steel beam 11, a clamping device and a jack 9; 2, the clamping device includes a base steel plate 1; two sides of the base steel plate 1 are symmetrically provided with fixed blocks; the fixed blocks include a horizontally arranged plywood 2 and a vertical plate 4 arranged perpendicular to the plywood 2; The splint 2 is fixedly connected with the vertical plate 4; as shown in Figure 3, the splint 2 and the aforementioned base steel plate 1 are symmetrically provided with three pairs of fixed through holes; the vertical plate 4 is provided with three clamping through holes; A nut 8 is fixed on the inner wall of the vertical plate 4 corresponding to the clamping through hole; the clamping plate 2 and the base steel plate 1 are fixedly connected with the nut 8 through the fixing through hole through the bolt 7; the clamping through hole is provided with a clamping Bolt 7. A fixing block is respectively provided on both sides of the base steel beam 11 , the fixing blocks on both sides are formed into a track groove shape by the horizontally arranged splint 2 and the vertically arranged vertical plate 4 , and the fixing through holes on the splint 2 and the base steel plate 1 are formed. Bolts 7 and nuts 8 are used to fix the jack 9 and the clamping device; the inner side of the clamping through hole on the vertical plate 4 is fixed with a nut 8, by arranging the bolt 7 in the clamping through hole, and tightening the bolt 7, so that the bolt 7 The top end squeezes the lower end sidewall of the end beam 11 of the steel beam 11 , and the falling device of the steel beam 11 is fixed on the steel beam 11 .

The steel beam dropping device of the present invention, as shown in Figure 2, is provided with a stiffening plate 3 between the vertical plate 4 and the clamping plate 2, and the vertical cross-sections of the vertical plate 4, the clamping plate 2 and the stiffening plate 3 are right-angled triangles, Set it as a triangle to increase the stability of the block. By setting the stiffening plate 3, the stability of the fixed block is improved, and the operation safety and service life are improved. Rubber plates 5 are provided on both sides of the lower end of the end beam of the steel beam 11 . By arranging the rubber plate 5, the front end of the bolt 7 is pressed against the rubber plate 5, so as to avoid damage to the paint and structure of the outer wall of the steel beam 11, and affect the appearance and durability. A filler plate 6 is arranged between the rubber plate 5 and the lower end sidewall of the end beam of the steel beam 11; the protection of the rubber plate 5 for the outer wall of the steel beam 11 is enhanced by the filler plate 6, and a buffer layer is provided for the rubber plate 5 to improve clamping. The clamping effect of the device, by increasing the protection of the outer wall of the steel beam 11 . The fixing through holes and the clamping through holes are arranged on the same vertical surface; the fixing through holes and the clamping through holes are arranged on the same disposal surface, which not only increases the overall aesthetics of the clamping device, but also only improves the overall aesthetics of the clamping device during the installation process. It needs to move up and down vertically for easy installation and operation.

After the steel beam 11 is assembled, when the steel beam 11 is installed and dropped, the spacer 10 is arranged on the bridge pier 12 under the end beam of the steel beam 11; the jack 9 is anchored on the top surface of the clamping device, and the bolts 7 Clamp the end beam of the steel beam 11, and let the jack 9 hang on the end beam upside down.

Turn on the oil pump, and the jack 9 lifts the steel beam 11 at the same time, so that the self-weight of the steel beam 11 is supported by the pads 10 on both sides to the jack 9, that is, the steel beam 11 is separated from the steel pads 10 on both sides; remove both sides manually. The topmost steel block 10. Turn on the oil pump, let the jack 9 return oil, the beam body falls, and is supported on the steel pads 10 on both sides. Then directly take out a layer of steel pads 10 directly under the jack 9, lower the height of the steel pads 10 under the oil top; repeat the cycle operation according to the above steps, complete the beam drop operation, and finally install the formal supports and anchor them.

Claims (8)

1. The utility model provides a girder steel roof beam device that falls which characterized in that: comprises a steel beam (11), a clamping device and a jack (9); the jack (9) is inversely fixed at the lower end of the end beam of the steel beam (11) through a clamping device.

2. The steel beam girder erection device of claim 1, characterized in that: the clamping device comprises a base steel plate (1); fixed blocks are symmetrically arranged on two sides of the base steel plate (1); the fixed block comprises a clamp plate (2) arranged horizontally and a vertical plate (4) arranged perpendicular to the clamp plate (2); the clamping plate (2) is fixedly connected with the vertical plate (4); a plurality of fixing through holes are symmetrically formed in the clamping plate (2) and the base steel plate (1); a plurality of clamping through holes are formed in the vertical plate (4); a nut (8) is fixedly arranged on the inner wall of the vertical plate (4) corresponding to the clamping through hole; the clamping plate (2) and the base steel plate (1) are fixedly connected with a nut (8) through a fixing through hole by a bolt (7); and a clamping bolt (7) is arranged in the clamping through hole.

3. The steel beam girder erection device of claim 2, characterized in that: and a stiffening plate (3) is arranged between the vertical plate (4) and the clamping plate (2).

4. The steel beam girder erection device of claim 3, characterized in that: and rubber plates (5) are arranged on two sides of the lower end of the end beam of the steel beam (11).

5. The steel beam girder erection device of claim 4, characterized in that: and a filling plate (6) is arranged between the rubber plate (5) and the side wall of the lower end of the end beam of the steel beam (11).

6. The steel beam girder erection device of claim 5, characterized in that: the fixing through hole and the clamping through hole are arranged on the same vertical plane.

7. The steel beam girder erection device of claim 6, characterized in that: the vertical plates (4), the clamping plates (2) and the stiffening plates (3) are right-angled triangles in longitudinal section.

8. The steel beam girder erection device of claim 7, characterized in that: three pairs of fixing through holes are symmetrically formed in the clamping plate (2) and the base steel plate (1); three clamping through holes are formed in the vertical plate (4).

Images