China Conveyor Driving Pulley Tail Pulley with Rubber Coating idler pulley

Solution Description

Head Drive Pulley, Return Pulley,Bend Pulley, Snub Pulley,Tensioning Pulley, Take up Pulley can be supplied. We are developing and manufacturing pulleys, employing resources of the greatest good quality in a creation process employing superior technologies. This collectively with the software of the Quality Assurance method certifi ed to ISO 9001:2015, contributes to the production of substantial top quality items offering dependable, extended life performance in the field and appreciably reducing maintenance cost. Every our conveyor pulley is individually computer made to meet the client’s demands.

Product Name

Belt Conveyor Pulley Drum

Type

Drive Pulley, Bend Pulley,Snub Pulley,Consider Up Pulley

Size

200mm-2500mm

Resources

Carbon steel, Stainless metal, Rubber

Floor Remedy

Clean, CZPT grooved lagging, Herringbone lagging, Ceramic lagging

Welding

Submerged Arc Welding

Bearing

Popular makes

Structure

Tube,shaft,self-aligning bearing,bearing seat/property,hub, locking bushing,end disc

Generate Pulley Introduction:

1. Head/Travel Pulley is situated at the discharge terminus of the conveyor. 
two. Drive pulley supplies the driving power for the conveyor. In purchase to increase pulley lifestyle and traction, it typically has a larger diameter than other pulleys.
3. We can provide pulleys with very hot vulcanized rubber lagging, plain or grooved, as essential by consumer. Different patterns of grooving this kind of as herringbone or CZPT can be provided to enhance tractive friction below dirty or moist conditions. CZPT grooves have the gain of currently being installed in any orientation, regardless of belt direction.

Specification of Travel Head Pulley Drum

Belt Width five hundred-2800mm (19-110 inch)
Pulley Size five hundred-3500mm (19-138 inch)
Diameter two hundred-1800mm (8-70 inch)
Regular ISO9001:2008, CEMA, DIN, TUV, JIS, AS/NS, and so on.
Doing work Existence A lot more than 30,000 hrs.
Floor Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, and so forth.
Primary Material Carbon Metal
Length of conveyor drive pulley is dependent on the width of conveyor Belt. You can get travel pulleys with sizzling & cold vulcanized rubber lagging, basic or grooved, as essential by consumer.

Bend Pulley Introduction:

1. The bend pulley  is utilized for altering the path of the belt.
two. The bend pulley is typically put in at the tail element or the vertical get-up tools portion when the belt route need to have to 180°bending. It will be mounted over the take-up tools portion even though 90°bending.
3. The pulley, which is used for extending the make contact with surface area, is normally employed for under or equal to 45 degree bending.
four. The floor remedy of the bend pulley can be easy steel and flat rubber lagging. 

Specification of Bend Pulley:

Belt Width five hundred-2800mm(19-one hundred ten inch)
Pulley Duration five hundred-3200mm(19-126 inch)
Diameter two hundred-1800mm(8-70 inch)
Common ISO9001:2008, CEMA, DIN, TUV, and many others.
Doing work Lifestyle A lot more than thirty,000 hrs.
Surface area Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, and so forth.
Primary Material Carbon Steel
Length of conveyor bend pulley is dependent on the width of conveyor Belt. You can get generate pulleys with hot vulcanized rubber lagging, plain or grooved, as needed by consumer.

Snub Pulley
Snub pulley is utilised to attain higher angle of wrap on the travel pulley therefore growing the traction. It also reduces the belt stress maximizing the existence of the conveyor component.It is mounted near to the drive pulley on the return aspect of the belt.

Specification of Snub Pulley:

Things Articles
Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3200mm (19-126 inch)
Diameter two hundred-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, and so forth.
Doing work Life More than 30,000 several hours.
Area Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, and many others.
Primary Material Carbon Metal
Length of conveyor Snubpulley relies upon on the width of conveyor Belt. You can get Snubpulleys with scorching vulcanized rubber lagging, plain or grooved, as essential by shopper.

Just take Up Pulley 
The consider up pulley will ensure ample stress of the belt leaving the travel pulley so as to avoid any slippage of the belt, make sure appropriate belt tension at the loading and other details along the conveyor, compensate for adjustments in belt size owing to elongation, and provide additional length of belt when required for splicing objective.

Specification of get up pulley drum:

Belt Width five hundred-2800mm(19-a hundred and ten inch)
Pulley Size 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Common ISO9001:2008, CEMA, DIN, TUV, and so forth.
Operating Existence Much more than thirty,000 hrs.
Surface Flat Rubber Lagged, Ceramic Lagged, CZPT Rubber Lagged, and many others.
Primary Material Carbon Steel

The elements of a pulley drum contain the following:

Drum or Shell The drum is the part of the pulley in direct speak to with the belt. The shell is fabricated from possibly a rolled sheet of metal or from hollow metal tubing.The shell has a particular ‘face’ width and diameter which is decided by the width of the belting and the sort and ranking of the belt to be used on the conveyor.
Diaphragm Plates The diaphragm or stop plates of a pulley are circular discs which are fabricated from thick steel plate and which are welded into the shell at every finish, to reinforce the drum.The end plates are bored in their centre to accommodate the pulley shaft and the hubs for the pulley locking aspects.
Shaft The shaft is made to accommodate all the applied forces from the belt and / or the drive unit, with minimal deflection.The shaft is situated and locked to the hubs of the end discs by implies of a locking components.
The shaft is supported on each ends by bearings which are housed in plummer blocks, to assist the shaft and pulley assembly on the conveyor composition.
Shafts often comprise various diameters alongside their length thanks to the bending moments and resultant deflection limitations. The diameter of the shaft at the landings for the bearings might be scaled-down to fulfill the necessary bearing diameter which is far more price-effective (smaller).
In the same way in the scenario of a generate shaft, the generate attachment, might be different to the other diameters together the shaft and consequently pulley shafts are frequently stepped.
Locking Factors These are higher-precision created objects which are equipped over the shaft and into the pulley hubs. The locking components attach the pulley firmly to the shaft via the stop plates.Locking factors perform on the friction-grip basic principle whereby the element is CZPT to be fixed to the shaft and hub simultaneously and concentrically, by tightening a collection of screws all around the locking factor.
Hubs The hubs are fabricated and machined housings which are welded into the finish plates. The hubs are sized according to the dimensions of the pulley, the diameter of the shaft and the dimension of the locking element which is necessary for the particular obligation.
Lagging It is often essential or fascinating to improve the friction amongst the conveyor belt and the pulley in order to boost the torque that can be transmitted via a drive pulley.Enhanced traction above a pulley also helps with the education of the belt.
In this kind of instances pulley drum surfaces are ‘lagged’ or coated in a rubberized content. This go over is typically 8 mm to 12 mm thick and can be plain or have a grooved pattern. The rubber lagging is vulcanized to the pulley shell to make certain that it continues to be connected below adverse functioning circumstances.
Bearing Assemblies Bearings assistance the rotating shaft and therefore the pulley. The bearings are housed in ‘plummer blocks’ which empower the mass of the pulley assembly furthermore the belt tension forces to be transmitted to the pulley supporting construction.Plummer blocks are often bolted to ‘sole plates’ which are welded to the composition.
The sole plates incorporate jacking screws to empower the pulley to be appropriately and relatively very easily aligned.

Many varieties of bearing housing, seals and end disc:

Pulley Drum Warehouse and deal:

Pulley Drums:

Our Items: Belt Conveyors, Pulley Drum, Conveyor Rollers Idler,  and so on.

Material: Stainless Steel
Surface Treatment: Polishing
Motor Type: Frequency Control Motor
Installation: Horizontal
Carrying Type: Light, Medium, Heavy
Light Connection Mode: The Shaft and Hub Are Single-Width Plate Welded Cy

###

Samples:
US$ 300/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Product Name
Belt Conveyor Pulley Drum
Type
Drive Pulley, Bend Pulley,Snub Pulley,Take Up Pulley
Length
200mm-2500mm
Materials
Carbon steel, Stainless steel, Rubber
Surface Treatment
Smooth, Diamond grooved lagging, Herringbone lagging, Ceramic lagging
Welding
Submerged Arc Welding
Bearing
Famous brands
Structure
Tube,shaft,self-aligning bearing,bearing seat/house,hub, locking bushing,end disc

###

Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3500mm (19-138 inch)
Diameter 200-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, JIS, AS/NS, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor drive pulley depends on the width of conveyor Belt. You can get drive pulleys with hot & cold vulcanized rubber lagging, plain or grooved, as required by client.

###

Belt Width 500-2800mm(19-110 inch)
Pulley Length 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor bend pulley depends on the width of conveyor Belt. You can get drive pulleys with hot vulcanized rubber lagging, plain or grooved, as required by client.

###

Items Content
Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3200mm (19-126 inch)
Diameter 200-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor Snubpulley depends on the width of conveyor Belt. You can get Snubpulleys with hot vulcanized rubber lagging, plain or grooved, as required by client.

###

Belt Width 500-2800mm(19-110 inch)
Pulley Length 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel

###

Drum or Shell The drum is the portion of the pulley in direct contact with the belt. The shell is fabricated from either a rolled sheet of steel or from hollow steel tubing.The shell has a specific ‘face’ width and diameter which is determined by the width of the belting and the type and rating of the belt to be used on the conveyor.
Diaphragm Plates The diaphragm or end plates of a pulley are circular discs which are fabricated from thick steel plate and which are welded into the shell at each end, to strengthen the drum.The end plates are bored in their centre to accommodate the pulley shaft and the hubs for the pulley locking elements.
Shaft The shaft is designed to accommodate all the applied forces from the belt and / or the drive unit, with minimum deflection.The shaft is located and locked to the hubs of the end discs by means of a locking elements.
The shaft is supported on both ends by bearings which are housed in plummer blocks, to support the shaft and pulley assembly on the conveyor structure.
Shafts often comprise different diameters along their length due to the bending moments and resultant deflection limitations. The diameter of the shaft at the landings for the bearings may be smaller to satisfy the necessary bearing diameter which is more cost-effective (smaller).
Similarly in the case of a drive shaft, the drive attachment, may be different to the other diameters along the shaft and hence pulley shafts are often stepped.
Locking Elements These are high-precision manufactured items which are fitted over the shaft and into the pulley hubs. The locking elements attach the pulley firmly to the shaft via the end plates.Locking elements work on the friction-grip principle whereby the element is able to be fastened to the shaft and hub simultaneously and concentrically, by tightening a series of screws around the locking element.
Hubs The hubs are fabricated and machined housings which are welded into the end plates. The hubs are sized according to the size of the pulley, the diameter of the shaft and the size of the locking element which is required for the specific duty.
Lagging It is sometimes necessary or desirable to improve the friction between the conveyor belt and the pulley in order to improve the torque that can be transmitted through a drive pulley.Improved traction over a pulley also assists with the training of the belt.
In such cases pulley drum surfaces are ‘lagged’ or covered in a rubberized material. This cover is usually 8 mm to 12 mm thick and can be plain or have a grooved pattern. The rubber lagging is vulcanized to the pulley shell to ensure that it remains attached under adverse operating conditions.
Bearing Assemblies Bearings support the rotating shaft and hence the pulley. The bearings are housed in ‘plummer blocks’ which enable the mass of the pulley assembly plus the belt tension forces to be transmitted to the pulley supporting structure.Plummer blocks are often bolted to ‘sole plates’ which are welded to the structure.
The sole plates incorporate jacking screws to enable the pulley to be correctly and relatively easily aligned.
Material: Stainless Steel
Surface Treatment: Polishing
Motor Type: Frequency Control Motor
Installation: Horizontal
Carrying Type: Light, Medium, Heavy
Light Connection Mode: The Shaft and Hub Are Single-Width Plate Welded Cy

###

Samples:
US$ 300/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Product Name
Belt Conveyor Pulley Drum
Type
Drive Pulley, Bend Pulley,Snub Pulley,Take Up Pulley
Length
200mm-2500mm
Materials
Carbon steel, Stainless steel, Rubber
Surface Treatment
Smooth, Diamond grooved lagging, Herringbone lagging, Ceramic lagging
Welding
Submerged Arc Welding
Bearing
Famous brands
Structure
Tube,shaft,self-aligning bearing,bearing seat/house,hub, locking bushing,end disc

###

Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3500mm (19-138 inch)
Diameter 200-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, JIS, AS/NS, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor drive pulley depends on the width of conveyor Belt. You can get drive pulleys with hot & cold vulcanized rubber lagging, plain or grooved, as required by client.

###

Belt Width 500-2800mm(19-110 inch)
Pulley Length 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor bend pulley depends on the width of conveyor Belt. You can get drive pulleys with hot vulcanized rubber lagging, plain or grooved, as required by client.

###

Items Content
Belt Width 500-2800mm (19-110 inch)
Pulley Length 500-3200mm (19-126 inch)
Diameter 200-1800mm (8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel
Length of conveyor Snubpulley depends on the width of conveyor Belt. You can get Snubpulleys with hot vulcanized rubber lagging, plain or grooved, as required by client.

###

Belt Width 500-2800mm(19-110 inch)
Pulley Length 500-3200mm(19-126 inch)
Diameter 200-1800mm(8-70 inch)
Standard ISO9001:2008, CEMA, DIN, TUV, etc.
Working Life More than 30,000 hours.
Surface Flat Rubber Lagged, Ceramic Lagged, Diamond Rubber Lagged, etc.
Main Material Carbon Steel

###

Drum or Shell The drum is the portion of the pulley in direct contact with the belt. The shell is fabricated from either a rolled sheet of steel or from hollow steel tubing.The shell has a specific ‘face’ width and diameter which is determined by the width of the belting and the type and rating of the belt to be used on the conveyor.
Diaphragm Plates The diaphragm or end plates of a pulley are circular discs which are fabricated from thick steel plate and which are welded into the shell at each end, to strengthen the drum.The end plates are bored in their centre to accommodate the pulley shaft and the hubs for the pulley locking elements.
Shaft The shaft is designed to accommodate all the applied forces from the belt and / or the drive unit, with minimum deflection.The shaft is located and locked to the hubs of the end discs by means of a locking elements.
The shaft is supported on both ends by bearings which are housed in plummer blocks, to support the shaft and pulley assembly on the conveyor structure.
Shafts often comprise different diameters along their length due to the bending moments and resultant deflection limitations. The diameter of the shaft at the landings for the bearings may be smaller to satisfy the necessary bearing diameter which is more cost-effective (smaller).
Similarly in the case of a drive shaft, the drive attachment, may be different to the other diameters along the shaft and hence pulley shafts are often stepped.
Locking Elements These are high-precision manufactured items which are fitted over the shaft and into the pulley hubs. The locking elements attach the pulley firmly to the shaft via the end plates.Locking elements work on the friction-grip principle whereby the element is able to be fastened to the shaft and hub simultaneously and concentrically, by tightening a series of screws around the locking element.
Hubs The hubs are fabricated and machined housings which are welded into the end plates. The hubs are sized according to the size of the pulley, the diameter of the shaft and the size of the locking element which is required for the specific duty.
Lagging It is sometimes necessary or desirable to improve the friction between the conveyor belt and the pulley in order to improve the torque that can be transmitted through a drive pulley.Improved traction over a pulley also assists with the training of the belt.
In such cases pulley drum surfaces are ‘lagged’ or covered in a rubberized material. This cover is usually 8 mm to 12 mm thick and can be plain or have a grooved pattern. The rubber lagging is vulcanized to the pulley shell to ensure that it remains attached under adverse operating conditions.
Bearing Assemblies Bearings support the rotating shaft and hence the pulley. The bearings are housed in ‘plummer blocks’ which enable the mass of the pulley assembly plus the belt tension forces to be transmitted to the pulley supporting structure.Plummer blocks are often bolted to ‘sole plates’ which are welded to the structure.
The sole plates incorporate jacking screws to enable the pulley to be correctly and relatively easily aligned.

The Mechanical Advantage of a Pulley

A pulley is an important tool for many tasks. The advantage that it offers over a hand-held mechanism is its mechanical advantage. In this article, we’ll discuss the types of pulleys and their applications. We’ll also look at the types of compound pulleys. And, of course, there’s a little bit about the mechanical advantage of a pulley. This article will help you decide whether this tool is right for your needs.
pulley

Mechanical advantage of a pulley

A pulley has a mechanical advantage over a lever because it is able to produce more force over longer distances. The mechanical advantage of a pulley sounds brilliant and could produce energy. But what exactly is this mechanical advantage? Let’s take a look. First, consider how a pulley works. A rope supports a 100kg mass, which requires 500 newtons of force to lift. If the rope supports a 100kg mass, two sections of rope can support that load. Using a pulley, you can lift the same weight with half the force.
A pulley’s ideal mechanical advantage is the ratio of the force applied to the total length of the rope. The larger the radius, the greater the mechanical advantage. A pulley made up of four rope segments has an ideal mechanical advantage of four. Therefore, a four-segment pulley would multiply the force applied by four. As the numbers on the rope segments are smaller than the total length of the rope, it would be better to use a compound pulley.
The mechanical advantage of a pulley can be calculated by using the T-method. The first step in calculating the mechanical advantage of a pulley is defining the force you need to lift. Then, divide that force by two to calculate the amount of force you need to lift the load. Once you know this amount, you can design a pulley to meet your needs. That way, you can achieve the perfect balance between the two types of pulleys.

Types of pulleys

The main function of the pulley is to change the direction of the force. The mechanical advantages of a single pulley are two. Ideally, two pulleys should have two or more mechanical advantages. The mechanical advantage of compound pulleys can be increased to two or more. The number of pulleys that make up the composite pulley will determine the mechanical advantage. Certain types of pulleys are combined in one housing.
A stepped pulley is a set of pulleys with stepped surfaces. Each face is anchored to the mid-axis in an ordered sequence. This design gives these pulleys their name. They are used to increase and decrease the speed of the driven pulley. Step pulleys are usually used in pairs. They can be straight or stepped, but usually come in pairs.
The three main types of pulleys are pulleys, rope pulleys, and chain pulleys. Pulley Pulley systems use mechanics to lift and lower heavy objects. The Greek historian Plutarch credits the invention of the pulley to Archimedes of ancient Sicily. The Mesopotamians used rope pulleys to lift water around 1500 BC, and Stonehenge is said to have been built using a rope pulley system.
pulley

Application of pulley system

The advantages of using a pulley system are numerous. The ability to lift heavy objects is a good example. The pulley system makes it easy for people to lift blocks and other large objects. It can be used in many different applications, from utility elevators to construction cranes. In addition, it is widely used on sailing boats. If you want to learn more about the benefits of a pulley system, keep reading!
You can use the pulley system to water flowers or water plants. Some of them even lowered the pot to make cleaning easier. Pendant lights are another great place to install a pulley system. Climbing and fishing are just some of the activities that utilize the pulley. They are great for fishing and gardening. And since they are so versatile, you can use the pulley system anywhere.
To get the most out of your pulley system, you must choose a product that has all of the above attributes. A high-quality pulley must have a large pulley diameter and be made of sturdy materials. The cables must also be properly supported in the pulleys to ensure a long service life for your investment. A good cable should have minimal cracks and be lubricated. These factors are the most important considerations when choosing a pulley system for your needs.

composite pulley

Composite pulley systems combine two or more movable pulleys. These systems maximize the force to move the weight and can also change direction so they can be used to lift weights. Composite pulley systems can be as simple or as complex as your needs. For example, a pulley pulley system uses multiple pulleys on each axis. This method is often used for hoisting building materials.
A compound pulley system has two or more rope segments, each of which is pulled up on a load. It can increase lift by making objects move faster. These systems are common on large sailboats and construction sites. Composite pulleys are also available for larger boats. Due to their versatility, they are versatile tools for construction sites and large sailboats. If you have their app, you should consider buying one.
The main advantage of composite pulleys is their versatility. You can use them to lift weights or use them to save energy. Composite pulleys are especially useful for lifting heavy objects. For example, you can tie a paper clip to the end of the rope and pull it up. The flag is then lifted into the air with the help of compound pulleys. Composite pulleys are a great invention and they are often used in construction.

security considerations

There are several safety considerations to consider when using pulleys. The first is Secure Workload (SWL). This value is a general guideline for the maximum weight a pulley can safely handle. It varies according to the height and angle of the pulley. Besides SWL, there are some other factors to consider. Consider each one before deciding on the pulley that best suits your needs.
Another safety consideration is the weight of the load. Since the highs of the pulley are higher than the lows, it doubles in weight. The weight of the high point should not exceed 4 kN. The safety factor is calculated by multiplying the strength of the pulley by the weight of the load. Secondary COD has a safety factor of 10:1 and bulletproof primary anchors should be used with pulleys.
If using a chain hoist, you must be trained in the appropriate type of lifting. It is important not to hang on the top hooks of the structure, nor to overload or rig the hooks with multiple slings. You should also avoid corroded or damaged chains, as they can cause the crane to jam or overload. A worn chain can even cause the load to drop.
pulley

Components of a pulley system

Proper design of the pulley system can increase the life of the cables and pulleys. Larger diameter cables should be selected as they are more durable than smaller diameter cables. The cables should also be supported in the pulley grooves. The pulley must be designed to be compatible with the cable and its lubrication should be optimal. Proper lubrication of cables and pulleys will ensure maximum durability and longevity.
The first type of pulley is called a fast pulley. These pulleys are used for quick start and stop of the machine. These pulleys are usually mounted in pairs on the countershaft of the machine. One pulley is tightly mounted on the machine shaft, while the other pulley is fitted with a free-spinning mechanism. When the machine is running, the belt is mounted on the tensioner pulley, and when it is stopped, the belt slides on the independent pulley.
Composite pulley sets reduce the overall effort required by reducing the size of the pulley. These are usually attributed to Archimedes. Flat pulleys are often used in flat belt driven transmission systems. These are used in high-speed, low-power applications. Flat pulley idlers are also used on the back of traditional V-belts.

China Conveyor Driving Pulley Tail Pulley with Rubber Coating     idler pulley	China Conveyor Driving Pulley Tail Pulley with Rubber Coating     idler pulley
editor by czh 2023-01-03