CN111926628A - Combined steel beam and application method thereof - Google Patents

Abstract

The invention relates to the technical field of track construction, in particular to a combined steel facilitation beam and an application method thereof, comprising a steel facilitation beam main body composed of a plurality of facilitation beam modules, and the facilitation beam modules are connected by a mortise-and-mortise structure. A movable diagonal brace is arranged on each side, and lifting feet are respectively installed on both sides of the bottom of the beam module. The invention adopts modular design, combined with the existing track bed cutting and dividing, adopts two fixed modules of 3.6m and 2.4m, and the mortise and tenon type insertion between the two modules can be quickly aligned and connected, and is suitable for straight and curved sections; it is safe and reliable, and It can meet various installation conditions on site; it can be quickly disassembled and assembled, and it is lightweight; it can meet the 45km/h passage requirements of subway vehicles.

Description

A combined steel stool beam and application method thereof

technical field

The invention relates to the technical field of track construction, in particular to a combined steel stool beam and an application method thereof.

Background technique

The existing steel stool beams mainly have the following problems: 1. The installation is troublesome and the construction steps are cumbersome; 2. The supporting devices on both sides of the steel stool beam are not firm, and the installation is complicated, and the gauge is not well controlled; It is difficult to install on the base of the board; 4. The integrity is poor, and the ability to resist lateral force is poor, so it is not suitable for curved areas, especially small-radius curved areas.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a combined steel stool beam based on the above-mentioned deficiencies of the prior art. The nylon sleeve and the backing plate are integrally manufactured and formed, so as to improve its integrity, make the nylon sleeve easier and more accurate to locate, and at the same time It also increases the strength and pullout resistance of the nylon sleeve.

The realization of the object of the present invention is accomplished by the following technical solutions:

A combined steel stool beam, which is installed on a track bed, is characterized in that: it comprises a steel stool beam main body composed of several stool beam modules, the stool beam modules are connected by a mortise-and-mortise structure, and two sides of the stool beam module are matched and connected. Each is provided with a movable diagonal brace, and two sides of the bottom of the commode beam module are respectively provided with lifting feet.

Both ends of the toilet beam module are respectively provided with a first fixing structure and a second fixing structure, the first fixing structure includes a first tenon and a first tenon and groove, and the second fixing structure includes a second tenon and a second A tenon and groove, the first tenon and the second tenon groove, and the second tenon and the first tenon groove are respectively matched.

The first fixing structure and the second fixing structure are respectively provided with long threaded holes and threaded holes, and the first fixing structure and the second fixing structure can be connected by a pair of tension bolts.

The movable diagonal bracing includes a telescopic link and a floating support foot. Both ends of the telescopic link are hinged to the floating support foot and the beam module respectively, and the floating support foot can be placed on the shield segment. .

The lifting feet are fixed to the base of the floating plate by means of bolts.

The utility beam module is provided with a rail gusset plate, and a shock-absorbing cushion is arranged in the rail gusset plate.

An application method involving the above-mentioned combined steel stool beam, characterized in that: the application method comprises the following steps:

a. Fix the lifting feet of each beam module on the design position of the floating board base, and adjust the height of the lifting feet to adapt to the height of different floating board bases;

b. Each beam module is connected by a mortise-and-mortise structure. According to the position of the track line, adjust the relative position of the long threaded hole of the first fixing structure and the threaded hole of the second fixing structure, and fix them by the tension bolts;

c. Expand the movable diagonal brace, adjust the length and position of the telescopic link of the movable diagonal brace, so that the floating support foot of the movable diagonal brace can be fixed on the shield segment.

The advantages of the present invention are: the modular design is adopted, combined with the existing track bed cutting and subdivision, two fixed modules of 3.6m and 2.4m can be used, and the mortise and tenon type insertion between the two modules can be quickly aligned and connected, and is suitable for straight lines and curves. Location; safe and reliable, it can meet various installation conditions on site; it can be quickly disassembled and assembled, light; it can meet the 45km/h passage requirements of subway vehicles.

Description of drawings

Fig. 1 is the installation structure schematic diagram of the present invention;

Fig. 2 is the structural representation of the utility beam module of the present invention;

Fig. 3 is the top view before the splicing of the utility beam module of the present invention;

Fig. 4 is the top view after the splicing of the utility beam module of the present invention;

5 is a cross-sectional view of the installation of the utility beam module of the present invention.

Detailed ways

Below in conjunction with the accompanying drawings, the features of the present invention and other related features will be described in further detail by embodiments, so as to facilitate the understanding of those skilled in the same industry:

As shown in Figure 1-5, the marks 1-15 in the figure are respectively indicated as: Beam module 1, first tenon 2, first tenon 3, second tenon 4, second tenon 5, long threaded hole 6, Threaded holes 7 , movable diagonal braces 8 , telescopic connecting rods 9 , floating feet 10 , lifting feet 11 , rail gussets 12 , shield segments 13 , floating plate bases 14 , and shock-absorbing cushions 15 .

Embodiment: The combined steel stool beam in this embodiment is installed on the track bed. As shown in Figure 1-5, the Benxi steel stool beam mainly includes a steel stool beam main body composed of several stool beam modules 1, and the stool beam modules 1 are connected by a mortise and tenon structure. Both ends of the toilet beam module 1 are respectively provided with a first fixing structure and a second fixing structure. The first fixing structure includes a first tenon 2 and a first tenon 3, and the second fixing structure includes a second tenon 4 and a second tenon and groove. 5. The first tenon 2 and the second tenon groove 5 and the second tenon 4 and the first tenon groove 3 are respectively adapted to facilitate the positioning and pre-fixing of the beam modules 1 . The first fixing structure and the second fixing structure are respectively provided with a long threaded hole 6 and a threaded hole 7, and the long threaded hole 6 of the first fixing structure and the threaded hole of the second fixing structure can be appropriately adjusted according to the position of the track line. 7 and fix it by pulling the bolts. Therefore, this embodiment is not only applicable to straight track sections, but also to curvilinear sections, and the above-mentioned design can meet the curvature requirements of curved sections.

As shown in Figures 1-5, a movable diagonal brace 8 is provided on both sides of the toilet beam module 1. The movable diagonal brace 8 includes a telescopic link 9 and a floating support foot 10. Both ends of the telescopic link 9 are hinged to the Floating feet 10 and stool beam module 1. When the movable diagonal brace 8 needs to be used, the movable diagonal brace 8 on the beam module 1 can be unfolded, and the movable diagonal brace 8 can be floated by adjusting the length and position of the telescopic link 9 of the movable diagonal brace 8 The support feet are fixed on the shield segment 13, and the installation is simple. At this time, the movable diagonal braces 8 can be used to support the beam module 1. At the same time, since the movable diagonal braces 8 are arranged on both sides of the convenient beam module 1, it is convenient to control The track gauge has good integrity, strong resistance to lateral force, and is suitable for small radius curves; when the movable diagonal brace 8 is not required, the movable diagonal brace 8 can be stowed and placed on the beam module 1 , easy to transport.

As shown in FIG. 1 , FIG. 2 and FIG. 5 , lifting legs 11 are respectively installed on both sides of the bottom of the stool beam module 1 , and the lifting legs 11 are fixed to the floating plate base 14 by bolts. Since the heights of the floating board bases 14 in each section of the track may be different, the heights of the lifting feet 11 can be adjusted to adapt to different heights of the floating board bases 14 .

As shown in FIGS. 1-4 , a rail gusset 12 is provided on the toilet beam module 1 , and a shock absorbing cushion 15 is provided in the rail gusset 12 . The rail gusset 12 can be used to install the rail, and the shock absorbing pad 15 is used for the shock absorption of the rail.

In this embodiment, the convenience beam module 1 adopts two specifications of 3.6m and 2.4m, because most of the current urban rail transit fasteners are arranged with a spacing of 600mm. The distance between the fasteners at the rear of the commode beam is still maintained at 600mm, and it can also be cut according to this modulus when cutting the track bed. In addition, the modules of prefabricated slabs currently used in urban rail transit are basically 3.6m, 4.8m and 6m, and the combination of 2.4m and 3.6m combined steel stool beams can match the modules of the existing prefabricated slabs and meet the requirements of prefabrication during operation. Temporary traffic demand after the slab is lifted, and the 2.4m and 3.6m beam modules 1 are designed with straight section conditions, and the curvature of the curve section is realized by adjusting the fasteners. If the beam module 1 is too long, the adjustment of the fasteners will further increase. big.

In addition, with reference to Figures 1-5, this embodiment also has the following application methods:

a. Fix the lifting feet 11 of each toilet beam module 1 on the design position of the floating board base 14, and adjust the height of the lifting feet 11 to adapt to different heights of the floating board base 14;

b. The convenience beam modules 1 are connected by a mortise and tenon structure. According to the position of the track line, adjust the relative position of the long threaded hole 6 of the first fixed structure and the threaded hole 7 of the second fixed structure, so that each convenient beam module 1 The installation position of the room meets the design requirements (applicable to the track curve section), and it is fixed by the pull bolts;

c. Expand the movable diagonal brace 8, adjust the length and position of the telescopic link 9 of the movable diagonal brace 8, so that the floating support 10 of the movable diagonal brace 8 can be fixed on the shield segment 13, and the two movable diagonal braces The support 8 is used to fix the toilet beam module 1 to prevent the fixed toilet beam module 1 from moving.

In summary, this embodiment adopts a modular design, combined with the existing track bed cutting and dividing, adopts two fixed modules of 3.6m and 2.4m, and the mortise and tenon type insertion between the two modules can be quickly aligned and connected, which is suitable for straight, Curve lot.

Although the above embodiments have described in detail the concept and embodiments of the present invention with reference to the accompanying drawings, those of ordinary skill in the art can recognize that various modifications to the present invention can still be made without departing from the scope of the claims. Improvements and transformations will not be repeated here.

Claims (7)

1. The utility model provides a modular steel is roof beam just, installs on saying the bed, its characterized in that: the portable beam comprises a steel beam main body consisting of a plurality of beam modules, wherein the beam modules are connected in a matched mode through tenon-and-mortise structures, two sides of each beam module are respectively provided with a movable inclined strut, and two sides of the bottom of each beam module are respectively provided with a lifting support leg.

2. The combined steel girder according to claim 1, wherein: the two ends of the beam module are respectively provided with a first fixing structure and a second fixing structure, the first fixing structure comprises a first tenon and a first mortise, the second fixing structure comprises a second tenon and a second mortise, and the first tenon is matched with the second mortise and the second tenon is matched with the first mortise.

3. The combined steel girder according to claim 2, wherein: the first fixing structure and the second fixing structure are respectively provided with a long threaded hole and a threaded hole, and the first fixing structure and the second fixing structure can be connected through split bolts.

4. The combined steel girder according to claim 1, wherein: the movable inclined strut comprises a telescopic connecting rod and a floating supporting leg, two ends of the telescopic connecting rod are respectively hinged to the floating supporting leg and the temporary beam module, and the floating supporting leg can be placed on the shield pipe sheet.

5. The combined steel girder according to claim 1, wherein: the lifting support legs are fixed on the floating plate base through bolts.

6. The combined steel girder according to claim 1, wherein: the beam module is provided with a steel rail buckle plate, and a damping cushion layer is arranged in the steel rail buckle plate.

7. An application method of the combined steel girder as claimed in claims 1 to 6, which is characterized in that: the application method comprises the following steps:

a. fixing the lifting support legs of each temporary beam module on the designed position of the floating plate substrate, and adjusting the height of the lifting support legs to adapt to the height of different floating plate substrates;

b. the beam modules are connected in a matched mode through tenon-and-mortise structures, the relative positions of the long threaded hole of the first fixing structure and the threaded hole of the second fixing structure are adjusted according to the position of the track line, and the long threaded hole and the threaded hole of the second fixing structure are fixed through split bolts;

c. and unfolding the movable inclined strut, and adjusting the length and the position of a telescopic connecting rod of the movable inclined strut to ensure that the floating supporting leg of the movable inclined strut can be fixed on the shield pipe sheet.

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