Product Description

China heavy duty 3 Axles 50000liters 48000L Carbon Steel Xihu (West Lake) Dis.id Oil Semi Fuel new Tank Trailer for Sale 6 Compartments 

Factory sales, we can according to your requirements for your production;
 

Outer size	(10600-12200)x2500x(3600-3780)mm  (Changeable)
Design Capacity (gross)	30000L-55000L
Tare weight (±3%)	7500-10000KG
Type	Tri-axle semi-trailer
Weight distribution	Front 16 000 kg, Rear 24 000 kg, Total 40 000 kg
Coupling height	Unladen 1320 mm
Tank assembly	Compartment	2-6 sets
	Front/Rear end plate	Material	aluminium alloy / stainless steel
	Front/Rear end plate	thickness	6mm
	Tank body  (with insulating layer)	Material	aluminium alloy / stainless steel
		Thickness	5mm
	Wave-proof plate thickness	4mm
	Manhole cover	Diameter	500mm
		Material	Aluminum Alloy
		Number	2-6pcs
	Discharging valve	Diameter	3 inch
		Material	Aluminum Alloy API valve
		Number	2-6 pcs
	Bottom safety valve	Aluminum Alloy   4  inch
	Discharging pipe	Diameter	3 inch
		Type	Rubber hose,2pcs
	Cat walk	Standard
CHASSIS	Axle	Brand	Fuwa
		Type	13t
		Number	3pcs
	Rim	Type	11.5-22.5/9.0-22.5
		Number	6/12 pcs
	Tire	Brand	Triangle brand
		Type	385/65R22.5  /  12R22.5
		Number	6/12pcs
	Suspension	Mechaniacal suspension  / air suspension
	Spring leaf	Leaf width	90mm
		Leaf thickness	13mm
		Layer/set	10 Layer
	King pin	Type	Bolts type
		Diameter	2   inch
	Brake system	Air tank	45L air tanks
		Brake chamber	WABCO RE6 relay valve; T30/30+T30 Spring brake chamber
		ABS	Optional
	Landing gear	Brand	JOST
		Type	E100 2 speed
Accessories	Spare tire carrier	One
	Light	LED light
	Voltage	24v
	Receptacle	7 ways(7wire harness)and quick change type
	Tool box	One piece,1000x500x500mm
	Paiting	Polyurethane paint&anti-rust primer&sand blasting
Tools for trailer	Head wrech ;spare wheel crank ;

FAQ:

A. What are our advantages compared with other competitors?

√√ Competitive Price — We’re semi  factory. We have 20 years of production and design experience; All accessories are selected from high quality suppliers;.From numerous comparison and feedback from clients, our price is more competitive than other competitors.

√√ Quick Response–
Our team is consisted of a group of diligent and enterprising people, working 24/7 to respond client inquiries and questions all the time. Most problems can be solved within 12 hours.

√√ Fast delivery —
Normally it will take more than 25-45 days for other companies to produce the ordered trailers, We are our own factory, we can have a 15-20 days delivery of regular trailers for our clients.

B. Which payment terms can we accept?

Normally we can work on T/T term or L/C term.

√√ On T/T term, 30% down payment is required in advance, 70% balance shall be settled before delivery, or against the copy of original B/L for regular client.
√√ On L/C term, normally need 30% down payment by T/T, 70% by L/C at sight. a 100% irrevocable L/C without “soft clauses” can be accepted sometimes. Please seek the advice from the individual sales manager whom you work with.

C. How long will our price be valid?

√√ Price with long valid time —
We are a tender and friendly supplier, never greedy on windfall profit. Basically, our price remains stable through the year. We only adjust our price based on 2 situations:
The rate of USD:RMB varies significantly according to the international currency exchange rates.
Manufacturers/factories adjusted the trailer price, because of the increasing labor cost and raw material cost.

D. What logistics ways we can work for shipment?

We can ship all trailer by various transportation tools.

√√ For 90% of our shipment, we will go by sea, to all main continents such as South America, Middle East, Africa, Oceania etc, either by container or RoRo/Bulk Shipment.
√√ For neighborhood countries of China, such as Russia, Tajikistan, Kazakhstan,Mongolia etc, we can ship trucks by road or railway.
√√ For light spare parts in urgent demand, we can ship it by international courier service, such as DHL, TNT, UPS, or Fedex.
 

How to Choose the Right Worm Shaft

You might be curious to know how to choose the right Worm Shaft. In this article, you will learn about worm modules with the same pitch diameter, Double-thread worm gears, and Self-locking worm drive. Once you have chosen the proper Worm Shaft, you will find it easier to use the equipment in your home. There are many advantages to selecting the right Worm Shaft. Read on to learn more.

Concave shape

The concave shape of a worm’s shaft is an important characteristic for the design of a worm gearing. Worm gearings can be found in a wide range of shapes, and the basic profile parameters are available in professional and firm literature. These parameters are used in geometry calculations, and a selection of the right worm gearing for a particular application can be based on these requirements.
The thread profile of a worm is defined by the tangent to the axis of its main cylinder. The teeth are shaped in a straight line with a slightly concave shape along the sides. It resembles a helical gear, and the profile of the worm itself is straight. This type of gearing is often used when the number of teeth is greater than a certain limit.
The geometry of a worm gear depends on the type and manufacturer. In the earliest days, worms were made similar to simple screw threads, and could be chased on a lathe. During this time, the worm was often made with straight-sided tools to produce threads in the acme plane. Later, grinding techniques improved the thread finish and reduced distortions resulting from hardening.
When a worm gearing has multiple teeth, the pitch angle is a key parameter. A greater pitch angle increases efficiency. If you want to increase the pitch angle without increasing the number of teeth, you can replace a worm pair with a different number of thread starts. The helix angle must increase while the center distance remains constant. A higher pitch angle, however, is almost never used for power transmissions.
The minimum number of gear teeth depends on the angle of pressure at zero gearing correction. The diameter of the worm is d1, and is based on a known module value, mx or mn. Generally, larger values of m are assigned to larger modules. And a smaller number of teeth is called a low pitch angle. In case of a low pitch angle, spiral gearing is used. The pitch angle of the worm gear is smaller than 10 degrees.

Multiple-thread worms

Multi-thread worms can be divided into sets of one, two, or 4 threads. The ratio is determined by the number of threads on each set and the number of teeth on the apparatus. The most common worm thread counts are 1,2,4, and 6. To find out how many threads you have, count the start and end of each thread and divide by two. Using this method, you will get the correct thread count every time.
The tangent plane of a worm’s pitch profile changes as the worm moves lengthwise along the thread. The lead angle is greatest at the throat, and decreases on both sides. The curvature radius r” varies proportionally with the worm’s radius, or pitch angle at the considered point. Hence, the worm leads angle, r, is increased with decreased inclination and decreases with increasing inclination.
Multi-thread worms are characterized by a constant leverage between the gear surface and the worm threads. The ratio of worm-tooth surfaces to the worm’s length varies, which enables the wormgear to be adjusted in the same direction. To optimize the gear contact between the worm and gear, the tangent relationship between the 2 surfaces is optimal.
The efficiency of worm gear drives is largely dependent on the helix angle of the worm. Multiple thread worms can improve the efficiency of the worm gear drive by as much as 25 to 50% compared to single-thread worms. Worm gears are made of bronze, which reduces friction and heat on the worm’s teeth. A specialized machine can cut the worm gears for maximum efficiency.

Double-thread worm gears

In many different applications, worm gears are used to drive a worm wheel. These gears are unique in that the worm cannot be reversed by the power applied to the worm wheel. Because of their self-locking properties, they can be used to prevent reversing motion, although this is not a dependable function. Applications for worm gears include hoisting equipment, elevators, chain blocks, fishing reels, and automotive power steering. Because of their compact size, these gears are often used in applications with limited space.
Worm sets typically exhibit more wear than other types of gears, and this means that they require more limited contact patterns in new parts. Worm wheel teeth are concave, making it difficult to measure tooth thickness with pins, balls, and gear tooth calipers. To measure tooth thickness, however, you can measure backlash, a measurement of the spacing between teeth in a gear. Backlash can vary from 1 worm gear to another, so it is important to check the backlash at several points. If the backlash is different in 2 places, this indicates that the teeth may have different spacing.
Single-thread worm gears provide high speed reduction but lower efficiency. A multi-thread worm gear can provide high efficiency and high speed, but this comes with a trade-off in terms of horsepower. However, there are many other applications for worm gears. In addition to heavy-duty applications, they are often used in light-duty gearboxes for a variety of functions. When used in conjunction with double-thread worms, they allow for a substantial speed reduction in 1 step.
Stainless-steel worm gears can be used in damp environments. The worm gear is not susceptible to rust and is ideal for wet and damp environments. The worm wheel’s smooth surfaces make cleaning them easy. However, they do require lubricants. The most common lubricant for worm gears is mineral oil. This lubricant is designed to protect the worm drive.

Self-locking worm drive

A self-locking worm drive prevents the platform from moving backward when the motor stops. A dynamic self-locking worm drive is also possible but does not include a holding brake. This type of self-locking worm drive is not susceptible to vibrations, but may rattle if released. In addition, it may require an additional brake to keep the platform from moving. A positive brake may be necessary for safety.
A self-locking worm drive does not allow for the interchangeability of the driven and driving gears. This is unlike spur gear trains that allow both to interchange positions. In a self-locking worm drive, the driving gear is always engaged and the driven gear remains stationary. The drive mechanism locks automatically when the worm is operated in the wrong manner. Several sources of information on self-locking worm gears include the Machinery’s Handbook.
A self-locking worm drive is not difficult to build and has a great mechanical advantage. In fact, the output of a self-locking worm drive cannot be backdriven by the input shaft. DIYers can build a self-locking worm drive by modifying threaded rods and off-the-shelf gears. However, it is easier to make a ratchet and pawl mechanism, and is significantly less expensive. However, it is important to understand that you can only drive 1 worm at a time.
Another advantage of a self-locking worm drive is the fact that it is not possible to interchange the input and output shafts. This is a major benefit of using such a mechanism, as you can achieve high gear reduction without increasing the size of the gear box. If you’re thinking about buying a self-locking worm gear for a specific application, consider the following tips to make the right choice.
An enveloping worm gear set is best for applications requiring high accuracy and efficiency, and minimum backlash. Its teeth are shaped differently, and the worm’s threads are modified to increase surface contact. They are more expensive to manufacture than their single-start counterparts, but this type is best for applications where accuracy is crucial. The worm drive is also a great option for heavy trucks because of their large size and high-torque capacity.