CN206494660U - Subway open-cut station is adjustable Span Beam gantry crane - Google Patents

Abstract

The utility model proposes an adjustable-span beam gantry crane at a subway open excavation station, which includes a main girder and supporting legs installed at both ends of the main girder. A beam flange is provided, and a column flange is provided above the support leg. The beam flange has multiple positions along the direction of the main beam to cooperate with the column flange. The support leg passes through the beam flange, column flange and The standard joints are fixed. When the span of the station does not change much, the span of the gantry crane can be changed only by adjusting the connection distance between the column flange and the beam flange above the outrigger, which greatly reduces the repeated investment in construction machinery and waste of resources, and improves production efficiency and Adaptability of gantry cranes, reduced construction costs, substantial features and advancements.

Description

Adjustable span girder gantry crane for subway open excavation station

technical field

The utility model relates to the technical field of building construction, in particular to an adjustable-span beam gantry crane at a subway open excavation station.

Background technique

With the construction of a large number of subway projects in large and medium-sized cities across the country, the single main beam gantry crane (electric hoist gantry crane) used in the vertical lifting of subway open excavation stations and the double main beam door used in the vertical lifting of shield construction dregs Cranes are used more and more frequently. With more and more projects, the use of gantry cranes is also increasing. Since the boundary conditions around each city, each line, and each station are different, the span of each station is also different, so the span of each gantry crane is different. Because a gantry crane has a long service life and high manufacturing cost, it is obviously uneconomical and not environmentally friendly to manufacture a new gantry crane with different spans for each station or shield construction. Therefore, if the span of the station is different and the same gantry crane is to be used, only the span of the main girder must be modified before the gantry crane is used. However, the cost of the main girder span reconstruction is high and the reconstruction time is relatively long. Therefore, in order to complete the span adjustment of the portal crane conveniently, quickly, efficiently, economically and environmentally friendly, it is necessary to adopt a more convenient span adjustment door. type crane.

Utility model content

The utility model proposes an adjustable-span girder gantry crane at a subway open-cut station, which solves the problem that the span of the main girder of the gantry crane in the prior art cannot be adjusted, and the main girder of the gantry crane can only be adjusted twice for different construction span requirements. Technical problems of processing or transformation.

The technical solution of the utility model is realized in the following way: an adjustable-span beam gantry crane at a subway open-cut station includes a main girder and supporting legs installed at both ends of the main girder, the main girder includes two standard joints, and the Beam flanges are provided below the two standard joints, and column flanges are provided above the legs. The beam flange, the column flange and the two standard joints are fixed. When the span of the station does not change much, the span of the gantry crane can be changed only by adjusting the connection distance between the column flange and the beam flange above the outrigger.

The length of the column flange is equivalent to the length of the legs. This structural design is mainly to meet the carrying capacity and stability requirements of the enlarged span of the gantry crane.

The main beam also includes an adjustable span joint, and the adjustable span joint is installed between the two standard joints. When the span of the station changes greatly, and the adjustment of the distance between the outrigger and the flange of the beam cannot meet the span requirements, an adjustable span joint can be added between the two standard joints of the main beam to further increase the portal type. The span of the crane.

Bolts are used between the two standard joints or between the standard joints and the adjustable span joints. The bolt hole diameter and hole distance of each section of the main beam splicing plate are uniform; it is convenient for the rapid combination and span adjustment of the main beam.

The utility model assembles and adjusts the span of the gantry crane according to different station spans, and is specifically divided into the following three types:

1. When the span of the station does not change much, it is only necessary to adjust the connection distance between the column flange of the outrigger and the beam flange of the standard joint to realize the span adjustment of the gantry crane.

2. When the span of the station increases a lot and the span requirement cannot be met by simply adjusting the connection distance between the outrigger and the beam flange, an adjustable span joint can be added between the two standard joints of the main beam to further increase the span. The span of a gantry crane.

3. When the span of the station is greatly reduced, the adjustable span joints of the main girder can be removed, and the main girder is not installed with adjustable span joints during assembly, and then adjusted according to the first method, so as to meet the construction requirements.

The utility model adopts the method of flange connection and increase or decrease adjustable span joints to adjust the span of the gantry crane to meet the construction needs of gauges with different station widths, greatly reducing repeated investment in construction machinery and waste of resources, and improving It improves the production efficiency and the adaptability of the gantry crane, reduces the construction cost, and has substantial characteristics and progress.

Description of drawings

In order to illustrate the embodiment of the utility model more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of an adjustable-span beam gantry crane at a subway open excavation station according to the present invention;

Figure 2 is a schematic structural view of the gantry crane when an adjustable span joint is added.

Marked in the figure, 1, outrigger; 2, the first standard joint; 3, the second standard joint; 4, column flange; 5, beam flange; 6, adjustable span joint.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Figure 1 is a structural schematic diagram of an adjustable-span beam gantry crane at a subway open excavation station. The main girder of the gantry crane includes two standard joints: the first standard joint 2 and the second standard joint 3, the beam flange 5 is welded on the bottom of the two standard joints, and the column flange is welded on the top of the leg 1 4. The beam flange 5 has multiple positions along the direction of the main beam to cooperate with the column flange 4, and the outrigger 1 is fixed with two standard joints through the beam flange 5 and the column flange 4. When the span of the station does not change much, the span of the gantry crane can be changed by adjusting the connecting distance between the column flange 4 and the beam flange 5 above the support leg 1 . The length of the column flange 4 is equal to or the same as that of the support leg 1, so as to meet the load-bearing capacity and stability requirements after the span of the gantry crane is increased.

Figure 2 is a schematic diagram of the structure of the gantry crane when an adjustable span joint is added. When the span of the station increases a lot and the span requirement cannot be met by adjusting the connection distance between the outrigger and the beam flange, an adjustable span joint 6 can be added between the first standard joint 2 and the second standard joint 3 , thereby further increasing the span of the gantry crane, the two ends of the adjustable span joint 6 are detachably connected to the first standard joint 2 and the second standard joint 3 through connecting plates and bolts respectively.

When the gantry crane is newly manufactured, the longest span size is selected as the designed and processed main girder size. Standard joints and adjustable span joints are made in sections; adjustable span joints are made into uniform lengths, and the bolt hole diameter and hole distance of each main girder splicing plate are uniform; it is convenient for the rapid combination and span adjustment of the main girder.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (4)

1. a kind of adjustable Span Beam gantry crane of subway open-cut station, including girder and the supporting leg (1) installed in girder two ends, It is characterized in that：The girder includes two standards with section, and lower section of two standards with section is equipped with beam flange (5), institute The top for stating supporting leg (1) is provided with post flange (4), and the beam flange (5) has multiple positions can be with the post method along along girder direction Blue (4) coordinate, and the supporting leg (1) is fixed by the beam flange (5), post flange (4) and the standard with section.

2. gantry crane according to claim 1, it is characterised in that：Post flange (4) length and the supporting leg (1) Length is suitable.

3. gantry crane according to claim 2, it is characterised in that：The girder is also matched somebody with somebody including an adjustable span Section, the adjustable span is arranged on two standards between section with section.

4. any gantry crane according to claims 1 to 3, it is characterised in that：Two standards are between section Or the standard with section and adjustable span with section between be connected by screw bolts.