CN202785307U - Bias-rail type bridge crane - Google Patents

Abstract

The utility model discloses a bias-rail type bridge crane, which comprises two girders, and a crane cart and a crane trolley at two ends. The bridge crane is characterized in that rails are arranged on cover plates on the two girders, so that wheels of a crane trolley can travel on the rails; and the rail is positioned in an eccentric position of the cover plate on each girder, and the distance between the center of the rail and the top flange of the web in each girder is between 110 and 170mm. The bias-rail type bridge crane has the advantages that the horizontal rigidity of the whole machine is reinforced, the self weight is reduced by 25 percent, the steel resource is saved while safety and lifting capacity are guaranteed, the motor power is further reduced, and the energy consumption is reduced by 36.5 percent.

Description

Inclined to one side rail formula crane in bridge type

Technical field

The utility model relates to a kind of elevator machinery, concretely, relates to a kind of Novel electric double-beam bridge crane.

Background technology

Crane in bridge type is the extraordinary weight-lifting equipment that carries out the material handling across being set up in workshop, warehouse and the sky, stock ground.Because its two ends are seated on the tall and big concrete column or metallic support, shape so claim crane in bridge type, is commonly called as " driving " like bridge.The crane span structure girder of crane in bridge type is laid on the track of both sides on overhead and vertically moves, and can take full advantage of the space handling material below the crane span structure, is not subjected to the obstruction of wayside equipment.It is a kind of elevator machinery that range of use is wide, quantity is many.

Reason owing to history, the mentality of designing of the crane in bridge type that China continues to use so far and architectural feature all are the technical standards of the former Soviet Union that introduces of the fifties in last century of continuing to use, up to now, the design manual of the industry, all without exception be old Soviet Union formula specification.

Old product in the past, from use angle, without any problem, this also is that the researchist more is not devoted to structural improved reason.But the epoch evolved more than 60 years, said structure, the disadvantage that comes out is exactly heavy, loaded down with trivial details, so both wasted resource, increased again productive costs, the existing New overhead travelling crane that goes out by our new concept Design and manufacture is under the prerequisite that guarantees equal hoisting capacity and safety, can make complete machine weight reduction 26%, energy-conservation 36.5%.So just more meet the requirement of Resources for construction economizing type, environmentally friendly nation-building, strengthen the requirement of the capability of sustainable development.

Our mentality of designing is aimed at the expansion of following aspect:

The weight of walking on stage on the girder: the old product that the existing whole nation produces, two girders are the high narrow structures that adopt, the plane on its top just set up behind the crane carriage without any the space, change the demands such as part in order to satisfy maintenance, must leave service personnel walks on stage, the solution of tradition Vintage Product is exactly in two girder outsides steel plate to be installed to walk on stage, and is linked on the girder.Walk on stage and the weight of Holder Fasteners part has 6.8 tons (hoisting crane with 10 tons of hoisting capacities calculates), steel and work step take 9000 yuan per ton of price, and that price of walking on stage then is 61200 yuan.

Summary of the invention

The purpose of this utility model provides a kind of inclined to one side rail formula crane in bridge type to remedy the deficiency of prior art performance.

The utility model for realizing the technical scheme that purpose adopts is: inclined to one side rail formula crane in bridge type, the crane and the monkey that comprise two girders, two ends, it is characterized in that: all be provided with track for the wheel walking of monkey on two girder upper cover plates, track is in eccentric position at the girder upper cover plate, and the spacing of orbit centre and girder endosternum top flange is 110 mm-170 mm.

Optimize: the horizontal clearance of girder upper cover plate is 950 mm ± 2mm, and the girder web plate height is 1150 mm ± 2mm;

Good effect of the present utility model is: strengthened the horizontal rigidity of complete machine self, alleviated deadweight 25%, when guaranteeing safety and load-carrying ability, saved steel resources.Thereby further reduced power of motor, reduced energy consumption 36.5%.

Description of drawings

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

Fig. 2 is the lateral plan of Fig. 1.

The specific embodiment

Embodiment 1:

In the drawings: 1 is girder, and 2 is crane, and 3 is monkey, and 4 is track, and 5 is the wheel of monkey.

The occupation mode of this enforcement and scope are identical with traditional old-fashioned crane in bridge type in the past, and below we describe being related to our thinking of innovation emphatically:

Part about girder 1:

Structure originally: the wide 450mm of girder, track is installed in the axial center of girder, spacing between track and the girder upper cover plate all is 225mm, so, monkey (monkey wheelspan 2500mm has been installed on the girder, monkey the widest part size 3600mm) after, the outer ledge of monkey is just substantially concordant with the outer ledge of girder.For the ease of personnel's walking, just be outside equipped with steel plate in the girder outer rim and walk on stage in order to walk.

The structure of present embodiment: girder 1 width is set to 950 mm, and with track 4 eccentric installations, the spacing of track 4 centers and girder 1 endosternum top flange is 110 mm, because monkey 3 size constancies (wheelspan 2500mm, wide 3600mm), install like this, girder 1 outer ledge and monkey 3 outer ledges also have the space of 780mm, enough for people's walking, have so just saved the material of walking on stage, by because having alleviated from weight 25%, so its technical performance has strengthened.

The benefit of bringing after the increase of girder 1 width is shown that also the horizontal rigidity that makes complete machine increases.

The weight that more than alleviates accounts for the 25-30% of original like product, so corresponding, the rating horsepower of motor 9 also can reduce by 36.5%.We are calculated as example with the hoisting crane oepration at full load of 50 tons of hoisting capacities: originally conduct oneself with dignity 43 tons, cart operation motor 9 power are 22kw, per hour power consumption 22 degree.And conduct oneself with dignity now 32 tons, and motor 9 power are 15kw, by per hour power consumption 15 degree calculating, per hour can save electricity 7 degree, as seen, energy-saving effect is very obvious.

Embodiment 2:

Keystone configuration and manner of execution are with embodiment 1, and difference is that the spacing of track 4 centers and girder 1 endosternum top flange is 170 mm, and like this, girder 1 outer ledge and monkey 3 outer ledges also have the space of 750mm, also can be for people's walking.

Claims (2)

1. rail formula crane in bridge type partially, the crane and the monkey that comprise two girders, two ends, it is characterized in that: all be provided with track for the wheel walking of monkey on two girder upper cover plates, track is in eccentric position at the girder upper cover plate, and the spacing of orbit centre and girder endosternum top flange is 110 mm-170 mm.

2. inclined to one side rail formula crane in bridge type as claimed in claim 1, it is characterized in that: the horizontal clearance of girder upper cover plate is 950 mm ± 2mm, the girder web plate height is 1150 mm ± 2mm.

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