Underslung Single Girder Overhead Crane

Overview:Underslung single girder overhead cranes are sometimes called under running crane/single girder underslung crane/under running bridge crane. Commonly used in factory buildings without load-bearing columns, but the roof can be load-bearing.

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Introduction
Parameter
Specifications

Underslung single girder overhead cranes are sometimes called under running crane/single girder underslung crane/under running bridge crane. Commonly used in factory buildings without load-bearing columns, but the roof can be load-bearing.
Under running cranes in standard capacities up to 10 tons. Special configurations can be designed to accommodate up to 32 tons. Underhung cranes offer excellent side approaches, close headroom and can be supported on runways hung from existing building members if adequate.
5ton Underslung single girder overhead crane on test run in customer's plant

Item	Parameter
Standard Capacity	0.5ton/1ton/2ton/3ton/5ton/10ton
Span length:	3m-16m
Lifting height:	6m/9m/12m/18m/24m/30m
Work duty	A3/A4
Rated voltage	220V/380V/400V/415V/660V, 50-60Hz, 3ph AC
Crane control mode	Floor control / Remote control
Traveling speed:	20-30m/min

Bridge steel structure part		he electric suspension crane bridge frame is mainly composed of main beam and end beam device. The main beam is the main load-bearing component of the hoist crane, and its lower flange is the electric hoist running track. Electric suspension cranes are generally designed with 500mm, 750mm, 1000mm cantilevers according to different spans. When the electric hoist is fully loaded to the cantilever end, negative wheel pressure is not allowed on the opposite side. The end beam device is located directly above the span of the two ends of the main beam, and is connected to the main beam through a single-hole hinged connecting plate. Rubber buffers are installed at both ends of the beam to avoid structural damage due to collision. The balance shaft connection structure is adopted between the main beam and the end beam, which is simple in structure, convenient to install, and convenient for transportation and storage.
Electric trolley, driven trolley		The electric suspension overhead crane trolley running mechanism consists of two sets electric trolleys and two sets driven trolleys, which are connected to the end beam connecting plate by two bolts under the wall panel.
Electric Hoist		Electric hoist is to be used on underslung overhead crane, each electric hoist will perform dynamic and static load test, rise and drop pressure tests. The baking paint process is adopted to enhance the adhesion of the paint film and improve the appearance quality. Assembly line ensures product quality.
Driving device		The body and cover of the drive unit are cast from gray iron HT200 with good anti-vibration performance. The gears and gear shafts are 40Cr forgings, and the hardness is HB235～269.
Crane Motor		The motor adopts ZDY series conical rotor brake motor. The motor has the characteristics of good heat dissipation, long service life, safety and reliability.
Crane Wheel		The wheel set is formed by die forging of 45# steel, and the heat treatment hardness is 300～380HB. The wheel axle is made of 45# steel, and the heat treatment hardness is 235～269HB.
Control Mode		Pendant panel, Remote control. The crane can also be equipped with two sets of operating devices, namely: ground + remote control . However, due to safety issues, the two operating modes can only be switched and cannot be used at the same time. The control circuit voltage is generally AC 36V safe voltage.
Electrical control system		Crane electrical equipment can ensure that the crane has safe, accurate and reliable transmission performance, monitoring performance and protection performance. According to customer requirements, the power supply can be designed as a three-phase electrical control system below 690V and a frequency of 50-60HZ.