What is Frequency conversion wire rope electric hoist

 The frequency conversion electric hoist uses the frequency converter to change the power frequency. To control the rotation of the motor. The variable frequency electric hoist has the following characteristics: It can reduce the impact during starting and stopping

Because the electric hoist has the performance of smooth running, it can reduce the shock when starting and stopping, and is especially suitable for working environments where vibration is not allowed. The lifting speed can be set as required

The lifting speed can be set from 1/.0 rated speed to rated speed to select a suitable operating speed. Can improve work efficiency

Under no-load, the lifting speed can be set between the rated speed and 15 times the rated speed to increase the running speed under no-load to improve work efficiency. Can easily set the running speed of the trolley

The frequency conversion control of the running electric stage can be carried out through the frequency converter, which can conveniently make the running motor run at a low speed, improve the accuracy of running positioning, and can also perform jog operation.

What is Frequency conversion wire rope electric hoist

15 Ton European Fem Standard Electric Wire Rope Hoist

 

Production Capacity:	100set/Month
Payment Terms:	L/C, T/T, Western Union, Paypal

Application:	Gantry Crane, Bridge Crane, Single Grinder Crane, Small Crane
Type:	Electric Hoist
Sling Type:	Wire Rope
Lift Speed:	>8m/min
Maximum Lifting Height:	>20m
Chain Falls:	2

Basic Info.

Certification

ISO9001:2000

Condition

New

Color

Base on Clients Request

Main Electric Parts

Schneider

Control Method

Pendent- Remote Control

Motor

Abm Motor

Hook

Forged

Load Test

1.1 and 1.25 Times

Paint

Ral 1018 and Ral 7015

Protection Grade

IP54

Drum

Seamless

Lifting Limiter

Included

Overload Limiter

Included

Power Source

Electric

Work Duty

A3-A4

Warranty

1 Year

Machinery Test Report

Provided

Video Outgoing-Inspection

Provided

Trademark

Dongqi CRANE

Transport Package

Wooden Box

Specification

1t-32t

Origin

China

HS Code

84251100

Brake:
The motor of hoisting mechanism is provided with double-disc electromagnetic brake. Brake integration locates at theend of motor. The brake will automatically close if the motor powers off in order that avoid load slipping off. The brakeclearance does not need to be manually regulated (which can be regulated automatically by brake spring) after beinginitially set; if the thickness of brake pad is lower than the setting,it will automatic alarm through additional monitorswitch in order to remind user to replace it. Double-disc electromagnetic brake is safe and reliable, the brake torque ishigher than 1.8 times of rated torque,the number of braking gets to 1,000,000 times and it does not need maintenancein the safety service circle.
Reducer:
Shell of the reducer uses aluminum alloy material, with weight and corrosion resistance. Semi-grease lubricant in fullsealed box gets all gears lubricated fully and should not be changed within the design circle for safety service.
Every gear which gets the process of surface hardening and high-precision grinding ensures stable running of reducer.

Technical features
compared with normal type electric wire rope hoist, the advantages of the european type wire rope hoist are:
The motor has low current for start and large torque.
With soft starting and good performance in speed upHave long service life
The technical parameters comply with standards of FEM and HMIWith high rotational speed and low noise
Brake has fast movement and high reliability.lt’s maintenance-free and self-regulated.
Employ dustproof design and long service life.
Reducer has small size and light weight.
Run smoothly and steadily and have low noise.Have corrosion resistance and maintenance-free.

15 Ton European Fem Standard Electric Wire Rope Hoist

Hand operated hoist up to 20 ton | HS-C Hand operated hoist

 

Hand operated hoist

Hand operated hoist / hand operated hoist is one of the most economical lifting tools for material handling. As a Hoist and Crane manufacturer, Dongqi Crane offers types of Hand operated hoists with good price for customers in various industries.

Dongqi Hand operated hoist has the features such as easy hand operation, simple structure, cost-effective, widely application, etc.

What’s important, Dongqi Hoist and Crane can provide you Manual  chain hoist and Manual  chain hoist with the features of spark resistant features, such as stainless steel, bronze hooks, chains, wheels, etc.

HS-C type series hand operated hoist

SK Series of lever chain hoist and lever chain hoist drawings

HS-C type series hand operated hoist specifications

	Lifting height	Running testing	Amount of Load chain	Load chain diameter	Net weight (kg)
0.5 ton hand operated hoist	2.5	0.75	1	6	8
1 ton hand operated hoist	2.5	1.5	1	6	10
1.5 ton hand operated hoist	2.5	2.25	1	8	16
2 ton hand operated hoist	2.5	3	2	6	14
3 ton hand operated hoist	3	4.5	2	8	24
5 ton hand operated hoist	3	7.5	2	10	36
10 ton hand operated hoist	3	12.5	4	10	68
20 ton hand operated hoist	3	25	8	10	156

Beside the HS-C hand operated hoist with above tonnages, Dongqi chain hoist  and Crane is able to design custom hand operated hoist based on your requirement. Contact us for more information on the hand operated hoist now.

Hand operated hoist up to 20 ton | HS-C Hand operated hoist

Overhead hoist | Types of overhead hoists| Dongqi overhead hoist

 

overhead hoist for your efficient material handling

Overhead hoist is used to raise and move heavy objects. Types of overhead hoists are designed to meet different requirements. Dongqi overhead hoist system is for you to improve lifting efficiency.

An overhead hoist is a device typically found in a manufacturing facility to raise and move heavy objects from one location to another. The control system can be wireless, attached to a long drop cable or in a control cabin attached to the hoist. The overhead hoist has an electric or air-powered motor driving a spool loaded with steel cable or heavy rope. Common placement of the overhead hoist is on a track in order to allow movement of the hoist to different work stations. Typically equipped with a large steel hook to tote objects, other options include a scissor clamp instead of a hook.

When an overhead hoist is used to move a large or heavy object across a work floor, a siren or horn is commonly blown to alert workers of the potential danger. On an overhead hoist used to move materials in a plant, the hoist is often fitted with a traction motor to assist in moving the hoist along the track. Smaller hoists can typically be manually pulled when lifting smaller objects on a track system. On the largest overhead hoist designs, an operator is commonly perched high above the floor and is actually controlling the movement of the hoist from a control cabin affixed to the hoist.

The typical operator of an overhead hoist is required to undergo specialized training in the operation of the hoist prior to actually working with materials. In some situations where the movement of materials is especially difficult or fragile, a new operator may be required to act as an intern for a period of time before being allowed to work without direct supervision. Understanding weight loads and balance points is critical to the safe operation of the hoist when lifting and moving large loads. In some applications, the hoist operator is not responsible for attaching the lifting hook or clamp to the object being moved. Specialized personnel are occasionally employed to hook the hoist to the objects being moved.

Maintenance on an overhead hoist is often limited to inspection of the cable and greasing the cable drum. Air-powered hoists may require maintenance intervals that are shorter than those of an electric hoist; however, this is often subject to the filters and water collection devices on the air lines feeding the hoist’s motor. Minor fraying of the cable is typical with an overhead hoist, however, any major damage or kinking of the cable should be repaired by cutting and reattaching the hook or clamp to avoid a broken cable or dropped materials.

Hoisting equipment offering of Dongqi

Various types of hoists are provided by Dongqi Group, the following list will give you a general introduction of Dongqi Hoists. Please contact us to select the right Hoists and lifting equipment for you application.

Chain Electric hoist

Electric hoist

The electric chain hoists can be used to handle material with the lifting capacity of 0.5 ton to 35 ton, lifting height of 3 to50m, with the working class of M3 and M4. Hoistdq offers you various types of electric chain hoists to solve you material handling solutions.

Overhead hoist | Types of overhead hoists| Dongqi overhead hoist

What Things Should Be Paid Attention To For Newly Purchased Gantry Cranes

 As a kind of lifting equipment, gantry Crane factory are widely used in many industries. Due to its wide use, in order to ensure the safe operation of the operation, we will have a series of requirements and attentions when using it. This is both for gantry cranes. Can play a very good protection, but also can extend its service life. So for newly purchased gantry cranes, the most qualified installers will generally be asked to perform trial operation, and then run-in when it can work normally.

　　The work of the newly purchased gantry crane is as follows:

　　 1. Since the crane is a special equipment, the operator should accept the manufacturer’s training, guidance, structure and machine performance to have a comprehensive understanding, and obtain certain operation and maintenance experience, and be able to operate the machine. The product use and maintenance instructions provided by the manufacturer are the basic information for the operators who operate the equipment. Before operating the machine, please read the instructions for use and maintenance, operation and maintenance according to the requirements of the instructions.

　　2. Pay attention to frequently observe the indication of the instrument. If there is an abnormality, stop the loss in time to eliminate the cause of failure and the failure has not been eliminated. Stop the operation.

　　3. Pay attention to the work load during the operation period. The work load cycle operation generally does not exceed 80% of the rated load, and the workload should be arranged to prevent the machine from overheating time due to continuous operation for a long time.

　　 4. Pay attention to frequently check the lubricating oil, hydraulic oil, coolant, brake fluid and fuel oil (water) and quality, and pay attention to check the sealing of the machine. The inspection found that due to the lack of excessive oil and water, the reasons were analyzed. At the same time, it is necessary to strengthen the lubrication and recommendations of all lubrication points during operation. Each category has lubricating point grease (except for special requirements).

　　5. Keep the machine clean, adjust in time, and tighten loose parts to prevent loosening, aggravating the wear of the parts or causing the loss of the parts.

　　6. After the cycle operation is over, the machine should be maintained compulsorily, check and adjust well, and pay attention to changing the oil.

　　 The above are the precautions after purchasing a new gantry crane. Doing these details is conducive to the later use of the gantry crane, and it also allows it to be used for a longer period of time.

What Things Should Be Paid Attention To For Newly Purchased Gantry Cranes

What is the reason for the brake failure of the single girder crane?

 When single-girder Crane factory are in normal use, sometimes they may encounter situations where the brakes are heated, the friction plates have a burnt smell, and the wear (a type of part failure) takes place very quickly. So what is the reason for this cleanup? Next, let's analyze it briefly!

　　 1. After the brake shoe was released, it did not disengage completely from the brake wheel evenly, and then there was friction. Single-girder cranes are used in two types: ground and mid-air. There are two types of cordless handles and remote control handles for ground use; mid-air use refers to the control of the driver's cab. There are two types of cabs: open and closed, which can be divided into left or right devices according to the actual situation. There are two types of entry directions: side and end, which is convenient to meet the needs of users in a variety of different environments. choose.

　　2. The gap between the two brake shoes and the brake wheel is not symmetrical, or the gap is too small.

　　 3. The short-distance brake auxiliary spring is damaged or bent.

　　 4. The outer layer of the brake wheel is too rough.

　　 Way of exclusion:

　　 1. Adjust the gap in the middle.

        2. Repair or replace with a new auxiliary spring

        3. Process the outer layer of the brake wheel according to actual needs.

　　After reading the above content, do you know the reason for the brake failure of the single girder crane? The way of exclusion is also briefly shared with you. If you have any questions, please feel free to consult us, or leave a message on the website!

What is the reason for the brake failure of the single girder crane?

How Much Do You Know About Wire Rope Guide?

 The wire rope guide is an indispensable partner on the electric wire rope hoist. Without a high-quality rope guide, the electric hoist will not operate normally or the service life will be greatly shortened. So how much do you know about the wire rope guide? What is the role of the wire rope guide on the wire rope hoist?

What is a rope guide?

The rope guide is also called the rope arranging device. It is one of the accessories of the electric wire rope hoist. Its function is to make the wire ropes neatly arranged on the drum to prevent the wire ropes from being chaotic and overlapping, which may cause mechanical failure and damage to the electric hoist. Since the wire rope of the electric hoist can only be wound in a single layer on the drum, without this rope guide, the wire rope will be entangled randomly, which will affect the lifting height and greatly shorten the service life of the wire rope.

The role of the wire rope guide on the wire rope hoist is very simple, but very important. Without it, the electric hoist cannot operate normally. Therefore, the component must be maintained and checked frequently to see if there is any abnormality, and if it is damaged, it should be replaced in time. With the extension of the machine's use time, the wear of the rope guide will become more and more serious. Therefore, it is necessary to observe the wear degree of the components in time.

The traditional CD1 electric hoist (single speed electric hoist) and MD1 electric hoist (double speed electric hoist) now use circular rope guides. The rope guide itself cannot rotate. When the reel rotates, it will be wound with the wire rope and moved along the axial direction driven by the thread groove. The wound wire rope can be accurately introduced and led out of the spiral groove of the reel at any time. The wire rope is driven by the rope guide. The gap is discharged. When the wire rope guide is working, the lateral force is very large, so it is often easy to cause breakage, and it is one of the most vulnerable parts on the electric hoist. We usually list it in the list of wearing parts. When customers purchase electric hoists, they will also remind customers that they can reserve several rope guides as spare parts.

In recent years, the emerging European-style electric hoist is also equipped with a rope guide. We have optimized the structure and material of the rope guide to make it more friendly to wire ropes and have a longer service life. Of course, the new rope guide cannot be installed on a traditional electric hoist.

The characteristics of the rope guide

• Avoid the entanglement of the wire rope and ensure the normal operation of the electric hoist;
• Extend the service life of steel wire rope and drum;
• Good interchangeability and stable quality.

If you buy or are using our electric hoist and find that the rope guide has worn out during use, please contact us in time to buy a new wire rope guide. Continuing to use the worn rope guide will cause damage to the wire rope of the electric hoist, which will not only increase the maintenance cost, but also affect the safety of the product.

How Much Do You Know About Wire Rope Guide?

How to Troubleshoot the Use of Electric Chain Hoist

 The electric chain hoist is compact in structure, small in size, light in weight, efficient and convenient, and brakes. It has gathered the advantages of electric hoist. However, even the best equipment may fail. Here is a detailed troubleshooting method for the electric chain hoist. Come and learn more.

Failure one: the sliding distance of the heavy object is too large

If the electric chain hoist is in use, the weight will slide too far. It may be caused by the following failures:

1. The friction surface of the brake is stained with oil. Just remove the back cover of the motor and wipe off the oil on the friction surface.
2. The brake friction surface wears too much and the motor has too much movement. The solution is to remove the motor back cover and adjust the shim and motor rotor shaft transmission.
3. The motor pressure spring is damaged. Replace the pressure spring to eliminate the fault. If the conical brake ring of the motor is damaged, the brake needs to be replaced directly.

Failure two: the motor does not rotate

If the motor does not rotate during the use of the chain hoist, it may be caused by the following reasons:

1. If the motor is not used for a long time, the brake cannot be opened. If this fault occurs, you need to remove the rubber dust cover of the rear bearing and tap the motor shaft several times.
2. The motor power supply lacks phase. At this time, you need to check the power supply and electrical wiring. If the voltage is lower than the rated voltage, the motor will not rotate. At this time, you need to wait for the stable voltage to be restored.
3. The brake wheel and the rear cover friction plate are rusted and seized, so it is necessary to remove the rear cover and clean the brake surface.

Failure three: the motor temperature is too high

If the temperature of the electric chain hoist is too high, it may be caused by the following faults, please eliminate them one by one.

1. Overload use or work too frequently. At this time, the electric hoist needs to be used according to the rated load and the working level of the mechanism.
2. Lubricating oil has failed or there is too little oil. The solution is simple, just change or refuel.
3. The brake has not been adjusted properly, and there is friction between the brake wheel and the brake. Re-adjusting the brake can solve this problem.

Failure four: the safety clutch slips at 1.25 times the rated load

If the electric chain hoist malfunctions when the safety clutch slips at 1.25 times the rated load, it means that the friction torque of the safety clutch is too small. You can turn the adjusting nut or screw on the safety clutch to the right to increase the positive pressure on the friction plate to solve the problem; it may also be the safety clutch damaged and parts need to be replaced at this time.

I have already introduced the troubleshooting methods of electric chain hoist, and I hope it will be helpful to everyone. Early detection of faults during the use of the electric hoist and elimination of it can effectively extend the service life of the electric hoist. If you cannot troubleshoot the fault, please contact your electric hoist supplier in time, and the supplier can provide you with more professional help.

How to Troubleshoot the Use of Electric Chain Hoist

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