Product Description

CONTACT :
Mandy Mo — Exporting Manager Of Quest Vehicle.
 
Web:questvehicle
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Bulk Cement Tank Semi Trailer Introduction:
4 Axles 40-60cbm Air Compressor Bulker Carrier Silo Powder Material Transport Tanker Truck Bulk Cement Tank Semi Trailer

We are manufacturer.
The trailer model we show is Quest standard product; meanwhile, all our trailers can be customized according to your unique request.

Bulk cement tank semi trailer, solution for bulk cement transporting.

Characteristics :

> Variety of Volume   – 28cbm, 40cbm, 45cbm, 50cbm, 60cbm, etc, both V-shape and W-shape.
> Fast Discharging   – Discharge efficiently within 30-45 minutes.
> Perfect Welding  – professional welding of main beam guarantee stability and durability.
> Modern Transportation Accessories  – spare tire carriers, water tank, fuel tank, etc.   

Less Maintenance, Better Performance!

Technical Specifications:
 

Items	Bulk cement tank trailer QUEST9306FLZY	Bulk cement tank trailer QUEST9406FLZY
Loading Capacity	25-50 cbm   V-shape	50-70 cbm   W-shape
Axle	3 pieces, 13T FUWA/BPW axle	3/4 pieces, 13T FUWA/BPW axle
Tyre	12 pieces, 10.00R20	16 pieces, 11.00R20
Dimensions(LxWxH)	9000 to 13000mm x 3000 x 3850mm
Tare weight	9 tons to 11 tons
Axle spacing	1310mm
Rims	8.5-20, 9.0-20
Suspension System	Leaf spring suspension / air suspension
Brake System	Dual line pneumatic brake system with CZPT emergency relay valve
Main Beam	Height 500mm Q345
Chassis	upper 20mm, lower 20mm. Mid web 12mm
Diesel Engine	Weichai brand Model 4105
Air Compressor	Bohai brand 12m3 double cylinders
Related Valves	One whole set of valves
Kingpin	2′ or 3.5′ interchangeable
Landing Gear	28 Tons , Two speed manual operation
Electrical System	1.Voltage: 24v  2. Receptacle: 7 ways (7 wire harness) German standard
Lights and Reflectors	Rear light, rear reflector, turn indicative light, side reflector, fog lamp, number plate light
Painting	Shot blast to SA 2.5 Standard prior to application of primer, polyurethane top coat. Total DFT not less than 100μm;Any color will be available
Tool Box	One tool box with a set of standard trailer tools
Spare Tyre Carrier	One piece or 2 pieces

More details of 3 axles bulk cement tank trailer:

Other Optional Models For Your Information:

FAQ:

A. What are our advantages compared with other competitors?

√√ Competitive Price — We’re trading company with factory. We manufacture products by ourselves and we source from other 
collaborative factories too which guarantees a competitive price and product variety.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, while we have a variety of resources, locally and nation widely, to receive trailers in timely manner. In 70% circumstance, 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.

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CONTACT:
Mandy Mo — Exporting Manager Of Quest Vehicle.
 
 
Web:questvehicle

24/7 online service, quick, efficient, professional!

How to Calculate Stiffness, Centering Force, Wear and Fatigue Failure of Spline Couplings

There are various types of spline couplings. These couplings have several important properties. These properties are: Stiffness, Involute splines, Misalignment, Wear and fatigue failure. To understand how these characteristics relate to spline couplings, read this article. It will give you the necessary knowledge to determine which type of coupling best suits your needs. Keeping in mind that spline couplings are usually spherical in shape, they are made of steel.

Involute splines

An effective side interference condition minimizes gear misalignment. When 2 splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by 5 mm. A linear lead variation, which results from multiple connections along the length of the spline contact, increases the effective clearance or interference by a given percentage. This type of misalignment is undesirable for coupling high-speed equipment.
Involute splines are often used in gearboxes. These splines transmit high torque, and are better able to distribute load among multiple teeth throughout the coupling circumference. The involute profile and lead errors are related to the spacing between spline teeth and keyways. For coupling applications, industry practices use splines with 25 to 50-percent of spline teeth engaged. This load distribution is more uniform than that of conventional single-key couplings.
To determine the optimal tooth engagement for an involved spline coupling, Xiangzhen Xue and colleagues used a computer model to simulate the stress applied to the splines. The results from this study showed that a “permissible” Ruiz parameter should be used in coupling. By predicting the amount of wear and tear on a crowned spline, the researchers could accurately predict how much damage the components will sustain during the coupling process.
There are several ways to determine the optimal pressure angle for an involute spline. Involute splines are commonly measured using a pressure angle of 30 degrees. Similar to gears, involute splines are typically tested through a measurement over pins. This involves inserting specific-sized wires between gear teeth and measuring the distance between them. This method can tell whether the gear has a proper tooth profile.
The spline system shown in Figure 1 illustrates a vibration model. This simulation allows the user to understand how involute splines are used in coupling. The vibration model shows 4 concentrated mass blocks that represent the prime mover, the internal spline, and the load. It is important to note that the meshing deformation function represents the forces acting on these 3 components.

Stiffness of coupling

The calculation of stiffness of a spline coupling involves the measurement of its tooth engagement. In the following, we analyze the stiffness of a spline coupling with various types of teeth using 2 different methods. Direct inversion and blockwise inversion both reduce CPU time for stiffness calculation. However, they require evaluation submatrices. Here, we discuss the differences between these 2 methods.
The analytical model for spline couplings is derived in the second section. In the third section, the calculation process is explained in detail. We then validate this model against the FE method. Finally, we discuss the influence of stiffness nonlinearity on the rotor dynamics. Finally, we discuss the advantages and disadvantages of each method. We present a simple yet effective method for estimating the lateral stiffness of spline couplings.
The numerical calculation of the spline coupling is based on the semi-analytical spline load distribution model. This method involves refined contact grids and updating the compliance matrix at each iteration. Hence, it consumes significant computational time. Further, it is difficult to apply this method to the dynamic analysis of a rotor. This method has its own limitations and should be used only when the spline coupling is fully investigated.
The meshing force is the force generated by a misaligned spline coupling. It is related to the spline thickness and the transmitting torque of the rotor. The meshing force is also related to the dynamic vibration displacement. The result obtained from the meshing force analysis is given in Figures 7, 8, and 9.
The analysis presented in this paper aims to investigate the stiffness of spline couplings with a misaligned spline. Although the results of previous studies were accurate, some issues remained. For example, the misalignment of the spline may cause contact damages. The aim of this article is to investigate the problems associated with misaligned spline couplings and propose an analytical approach for estimating the contact pressure in a spline connection. We also compare our results to those obtained by pure numerical approaches.

Misalignment

To determine the centering force, the effective pressure angle must be known. Using the effective pressure angle, the centering force is calculated based on the maximum axial and radial loads and updated Dudley misalignment factors. The centering force is the maximum axial force that can be transmitted by friction. Several published misalignment factors are also included in the calculation. A new method is presented in this paper that considers the cam effect in the normal force.
In this new method, the stiffness along the spline joint can be integrated to obtain a global stiffness that is applicable to torsional vibration analysis. The stiffness of bearings can also be calculated at given levels of misalignment, allowing for accurate estimation of bearing dimensions. It is advisable to check the stiffness of bearings at all times to ensure that they are properly sized and aligned.
A misalignment in a spline coupling can result in wear or even failure. This is caused by an incorrectly aligned pitch profile. This problem is often overlooked, as the teeth are in contact throughout the involute profile. This causes the load to not be evenly distributed along the contact line. Consequently, it is important to consider the effect of misalignment on the contact force on the teeth of the spline coupling.
The centre of the male spline in Figure 2 is superposed on the female spline. The alignment meshing distances are also identical. Hence, the meshing force curves will change according to the dynamic vibration displacement. It is necessary to know the parameters of a spline coupling before implementing it. In this paper, the model for misalignment is presented for spline couplings and the related parameters.
Using a self-made spline coupling test rig, the effects of misalignment on a spline coupling are studied. In contrast to the typical spline coupling, misalignment in a spline coupling causes fretting wear at a specific position on the tooth surface. This is a leading cause of failure in these types of couplings.

Wear and fatigue failure

The failure of a spline coupling due to wear and fatigue is determined by the first occurrence of tooth wear and shaft misalignment. Standard design methods do not account for wear damage and assess the fatigue life with big approximations. Experimental investigations have been conducted to assess wear and fatigue damage in spline couplings. The tests were conducted on a dedicated test rig and special device connected to a standard fatigue machine. The working parameters such as torque, misalignment angle, and axial distance have been varied in order to measure fatigue damage. Over dimensioning has also been assessed.
During fatigue and wear, mechanical sliding takes place between the external and internal splines and results in catastrophic failure. The lack of literature on the wear and fatigue of spline couplings in aero-engines may be due to the lack of data on the coupling’s application. Wear and fatigue failure in splines depends on a number of factors, including the material pair, geometry, and lubrication conditions.
The analysis of spline couplings shows that over-dimensioning is common and leads to different damages in the system. Some of the major damages are wear, fretting, corrosion, and teeth fatigue. Noise problems have also been observed in industrial settings. However, it is difficult to evaluate the contact behavior of spline couplings, and numerical simulations are often hampered by the use of specific codes and the boundary element method.
The failure of a spline gear coupling was caused by fatigue, and the fracture initiated at the bottom corner radius of the keyway. The keyway and splines had been overloaded beyond their yield strength, and significant yielding was observed in the spline gear teeth. A fracture ring of non-standard alloy steel exhibited a sharp corner radius, which was a significant stress raiser.
Several components were studied to determine their life span. These components include the spline shaft, the sealing bolt, and the graphite ring. Each of these components has its own set of design parameters. However, there are similarities in the distributions of these components. Wear and fatigue failure of spline couplings can be attributed to a combination of the 3 factors. A failure mode is often defined as a non-linear distribution of stresses and strains.