Different Types Of Overhead Cranes

1. Product Introduction:

Different types of overhead cranes with european standard are based on European lightweight and modular design concepts and advanced manufacturing processes, the whole crane is compact in structure, stable in operation, light in weight, energy saving and consumption reduction.Different types of overhead cranes with european standard are used in conjunction with European-style wire rope electric hoist, with a rated lifting capacity of 3.2t~16t.

 
It is widely used in workshops, warehouses and other material handling occasions in machinery manufacturing, metallurgy, food, papermaking, building materials, electronics and other industries. It is forbidden to use in flammable and corrosive media environment. The working level is higher than that of traditional single girder overhead cranes, which can reach A5-A6.

 

In general, the different types of overhead cranes with european standard have the characteristics of simple structure, reliable operation and wide range of application, and is one of the common lifting equipment in industrial production.

 

2. Parameters:

 

Lifting Weight(t)	1				2				3				5				10				20				Customized
Span(m)	7.5	10	15	18	8	13	18	27	7.5	12	18	23	8	12	15	18	8	12	15	20	10	16	19	26	Customized
Working Speed (m/min)	Customized
Model of Electric Hoist	Electric European Wire Rope Hoist Trolley
Lifting Speed(m/min)	Customized
Hoisting Height(m)	Customized
Working Class	A5-A6
Electric Current	Three-phase AC 380V 50Hz or Customized

 

3. Component:

 

First, during the operation of the complete crane, these three operating devices are inseparable. Let's take the driving device as an example. A driving device is installed on a specially laid track. During the operation of the complete crane, The lifting trolley provides source power to prompt the lifting trolley to move on the track, and the crane's trolley slowly transfers itself and the weight of the external load to other places with the support of the supporting device. During this process, the safety device always While performing its duties, it plays the most basic role in ensuring the safety of cranes and staff.

 

To put it simply, the whole driving device of the crane can be divided into self-propelled driving device and traction driving device. Here we mainly talk about the traction driving device in the crane.

 

The fetching device used in the traction drive device of the crane is generally a hook, and then the wire rope is used to move through the cable drum. Usually, the wire rope at one end is just rolled into the drum, and the wire rope at the other end comes out of the drum, and then In the process of pulling the crane trolley to move, there are requirements for the traction drive device, and the weight of its own operating part must be designed to be relatively light.

 

Relatively speaking, the support device of the crane does not have a complicated structure and working principle. It simply carries the weight from the crane itself and the lifting trolley, and gradually transfers the weight of the wheel pressure to the supported crane equipment.

 

4. Bridge crane electrical control system

 

The electrical control system of the bridge crane is an electrical control product. Generally used under special working conditions, most installation locations have large vibrations. During the operation of the bridge crane, not only the rotating parts rotate, the track is not smooth, the joints will also vibrate, and actions such as emergency stop, reversal, lifting, and multi-mechanism linkage will also occur. This can shake the bridge. Bridge crane electronic control products should meet the following requirements: the incoming line voltage fluctuation does not exceed 10% of the rated voltage, the electrical components are installed vertically, the inclination angle does not exceed 5 degrees, the original components are installed firmly, and there is no horizontal movement or vertical movement relative to the host machine during work. beat.

 

With the development of frequency conversion speed regulation technology for bridge cranes, bridge crane frequency converters can drive almost all motors efficiently and stably, including ZDY motors, YZR motors, etc. It can be seen that choosing a variable speed bridge crane is not about spending money, but about In order to reduce the cost of overhead cranes. For example, professional transmission cranes can be maintained without maintenance for three to five years. As we all know, traditional cranes cannot achieve this.

 

In view of the special situation of the bridge crane and its high safety, the electronic control system of the bridge crane must not only meet the general technical requirements stipulated in the electronic control product standards, but also meet certain special requirements. The transmission control scheme of the bridge crane should have at least one level of short-circuit protection, voltage loss protection, emergency stop switch or device, and necessary limit protection. Electrical components should be able to withstand the vibration of the installation location of the lifting electronic control product. The selection should be based on actual environmental conditions or other special electrical appliances, and necessary auxiliary protective measures should be taken.

 

Bridge crane frequency drive, that is, variable speed operation. General bridge crane equipment requires frequent replacement of transmission mechanisms. In the later stages of vehicle driving, almost all failures are caused by vehicle driving. For example, due to engine combustion, damage to the reduction gear, wear of the girder feet, electrical faults and other reasons, start and stop inertia impacts occur. In fact, many users believe that there is no need to change the speed of the crane.

 

Now, let me tell you, if the lifting valve or other equipment of the hydraulic station does not use a variable speed crane, then every few months, it will not be needed.

 

All electrical components, accessories and wires must be securely installed in accordance with the relevant installation procedures. After the bridge crane is vibrated, there must be no loosening, twisting, shifting, falling, etc., which will affect the normal operation of electrical components and control equipment. The main circuit and control circuit should be connected to the panel as much as possible. Whenever possible, use insulated or terminal-insulated cable terminals. For outer conductors that require welding of multiple components, measures should be taken to ensure that no welding accidents occur when the bridge crane is in working condition.

 

5. The function of crane safety wheel

Since the lifting of heavy objects is carried out on one side of the main beam, the heavy objects generate a tipping moment on the trolley. The anti-tilting moment generated by the vertical anti-rail wheel or the horizontal anti-rail wheel keeps the trolley balanced and cannot tip over. However, this method alone cannot guarantee safety in the event of wind disaster, external impact, broken wheels, maintenance, etc. therefore. This type of crane should be equipped with a safety hook.

 

Safety hooks are also designed with different structures depending on the types of trolleys and rail wheels.

 

6. Methods to reduce surface rust and extend service life of bridge cranes

 

Reduce the surface rust of the bridge crane to extend its service life and reduce project construction expenses. The following is a guide for preventing rust of the bridge crane. I hope it will be helpful to you during use:

 

1. The exposed parts of the bridge crane are most susceptible to corrosion. These parts should be coated with calcium-based anti-rust grease or other anti-rust grease.

 

2. For bridge cranes, the surface of the wire rope should be coated with anti-rust lubricating oil, and the outside should be wrapped with tarpaulin or plastic film under non-operating conditions.

 

3. Calcium-based anti-rust grease should be injected into the bearing of the hook to prevent rust, and should be checked regularly to ensure the anti-rust effect and extend the use.

Hot Tags: different types of overhead cranes, China different types of overhead cranes suppliers, manufacturers, factory