Product Description

 

Our Advantages

Sales rank:China’s top three.

Sample: Support sample order.

OEM: Support technical changes.

Free train: plant training on installation and maintenance techniques.

QC: Quality inspection before delivery for each unit.

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Product Description

 

We have many models about the machine, if you are interested, we will send the catalogue and details for you, please send the enquiry.thanks.

Our have multiple models Four wheel tractor of power.#12HP  #15HP #18HP #20HP #22HP  #25HP  #28HP  #30HP  #35HP  #40HP  #45HP  #50HP  #60HP  #70HP.

Farm tractor diesel engine has simple and compact structure, manipulate, light weight, can be widely used for various field. like small farmland, vineyards, flower garden, greenhouse particularly ideal for mountainous field.

HangZhou LANSU TRACTOR
#12HP  #15HP #18HP #20HP #22HP  #25HP  #28HP  #30HP  #35HP ,
multifunction, reliable quality, affordable
Can be equipped with variety of agricultural tools for different farming works
Famous and high-quality engine, strengthen chassis, strong power
Power emission upgrade, more advanced performance, low fuel consumption, high reliability
Easy operation, few maintenance
Can design and produce the tractors in OEM

Multi cylinder tractor
#25HP  #28HP  #30HP  #35HP  #40HP  #45HP  #50HP  #60HP  #70HP.
 
HangZhou Lansu ,tractor use famous s brand front drive axle so that quality is  highly reliable.
Adopting a new type of high pressure lifter makes the work more convenient and flexible.
 
Equipped with external double oil cylinders, the working effect is better.

Product Parameters

MODEL			LS-Mini tractor 12hp
Engine	Model		195
	Type		1cylinder,4-stroke,horizontal,water-cooled,diesel
	Cooling Mode		Condenser (Radiator)
	Power		12hp
	Combustion System		Direct Injection
	Cylinder Bore		92mm
	Piston Stroke		95mm
	Compression Ratio		18:01
	Rated Speed		2400rpm
	Fuel Efficiency:		≤257gl/kw.hr
	Displacement		0.632
	Fuel Tank Capacity		8L
	Water Tank Capacity		2L
	Net Weight		112kg
	Gross Weight		122
Overall dimensions:(L×W×H)			2140×905×1175mm Without tiller
Overall dimensions:(L×W×H)			2600×1000×1175mm With tiller
Front wheel size			5.00-12
Back wheel size			7.50-16
Ground clearance			180mm
Working weight			490kg
Transmission style			Belt transmission
Steering style			Steering wheel power steering system
Brakes			Two side wheel brake
Starter			Electric start/Hand crank
Seat			Adjustable
Gear style			(3+1)*2; 6 Forward, 2 Reverse
Speed		Forward	1.68, 2.61, 4.22, 6.79, 10.57, 17.08
		Reverse	1.29, 5.22
Rotary tiller		Transmission Type	Middle Gears Transmission, or side gears transmission
		Width	1000mm Adjustable
		Number of blades	18-20pcs
		Working depth	150-250mm
		Up and down control	Hydraulic system

 

Model	LS-Small tractor 25hp
Wheel drive	4×2
Dimensions	2700×1400×1400
Weight(kg)	950-1571
Front wheel(mm)	900,1000,1100,1200 adjustable
Rear wheel(mm)	960,1000,1100,1200,1300 adjustable
Wheel base(mm)	1400
Min. ground distance(mm)	350
Gear shift	6+1
Tyre size	9.5-20/500-14
ENGINE Type
Rated power(kW)	18.32kw
Rated speed (r/min)	Water cooled,vertical,4 stoke and direct injection
Start	Electric
Transmission	2200
Clutch	single ,dry friction, single clutch
Connection/PTO	3×2+1
	3 point suspension/ Rear P.T.O  540

 

MODEL	LS- Middle tractor 50hp
Horsepower&Drive Type	50hp, 4×4
ENGINE
Engine Model	50HP
Type	Vertical, Water-Cooled, Four Strokes, Direct in Injection
Rated Output(kW)	36.8
TRACTOR PARAMETER
Dimension L*W*H (mm)	3558*1500*2245
Wheel Base (mm)	1900
Wheel Tread F/R(mm)	1060/1100
Min Ground Clearance(mm)	300
TRANSMISSION
Gear Shift	8F+2R
Clutch Type	Dry Single-stage
RUNNING SYSTEM
Tire F/R	650-16/11.2-24
Steering	Hydraulic Steering
Brake	Toe Type
Park Brake	Latch Pedal
WORKING SYSTEM
Hitch	Partial Separated Type, 3-Point hydraulic hitch,Category 1
Max. Lift Force(N)	≥6300
Rear PTO	Rear Rectangle Spline, 6 Teeth, 540/720rpm

 

Accessories and Tools

Farming tools for Farm tractor
Farm tractor is a all-powerful agricultural machinery.lt can help farmers land consolidation (plought,rotary tillaqe, scarification,ditching,ridqing, earth up,grass mower Paddy field beating etc).
Crop planting and seeders (wheat, , corn, soybean seed, peanut, planting potatoes, vegetables eto Harvest (rice, wheat harvest, corn , peanut, potatoes, sweet potato Onions, ginger, qarlic).
The other management of land, water, spray, fertilization, paddy field operation etc).

Packaging & Shipping

 

Company Profile

With more than 20 years of industry experiences, our international trade headquarters located in port city -HangZhou, machines produced in HangZhou, HangZhou, HangZhou, ZheJiang China. There are 7 series with over 60 various of farming machines available including power tiller, walking tractor, 4 wheel tractor, spray machine, thresher and supporting farm tools,such as rotary tiller,plow,harrow,front loader,backhoe,grass bander, trailer,pump,corn planter,corn harvester and reaper. Already passed the international certification agency -S G S certification,technical person can be sent abroad. In the field of farming machinery,we can meet diverse customer needs by advanced technology and most popular agricultural machine.Exported to more than 40 countries especially South America,eastern Europe,middle america and we are quality supplier of assistance to agricultural machinery project in africa. with prefect One-stop agricultural machinery products service system we get nice reputation. We are committed to creating benefit for our customers and our goal is to allow farmers in the world to enjoy reliable, quality, affordable complete set of agricultural machines.
3. Our commitments:
a. With us, your funds is safe.
b. At least 12 months warranty, quality inspection before shipment.
c. Factory direct supply farming machinery and support you earning more money.
d. Near the port, rapid production and without M O Q, on time delivery.
e. OEM available, providing customized feature machine to enlarge market share.
f. Quick answer in 10 minutes.
Affordable price, reliable quality, enjoys farming.

 

Stiffness and Torsional Vibration of Spline-Couplings

In this paper, we describe some basic characteristics of spline-coupling and examine its torsional vibration behavior. We also explore the effect of spline misalignment on rotor-spline coupling. These results will assist in the design of improved spline-coupling systems for various applications. The results are presented in Table 1.

Stiffness of spline-coupling

The stiffness of a spline-coupling is a function of the meshing force between the splines in a rotor-spline coupling system and the static vibration displacement. The meshing force depends on the coupling parameters such as the transmitting torque and the spline thickness. It increases nonlinearly with the spline thickness.
A simplified spline-coupling model can be used to evaluate the load distribution of splines under vibration and transient loads. The axle spline sleeve is displaced a z-direction and a resistance moment T is applied to the outer face of the sleeve. This simple model can satisfy a wide range of engineering requirements but may suffer from complex loading conditions. Its asymmetric clearance may affect its engagement behavior and stress distribution patterns.
The results of the simulations show that the maximum vibration acceleration in both Figures 10 and 22 was 3.03 g/s. This results indicate that a misalignment in the circumferential direction increases the instantaneous impact. Asymmetry in the coupling geometry is also found in the meshing. The right-side spline’s teeth mesh tightly while those on the left side are misaligned.
Considering the spline-coupling geometry, a semi-analytical model is used to compute stiffness. This model is a simplified form of a classical spline-coupling model, with submatrices defining the shape and stiffness of the joint. As the design clearance is a known value, the stiffness of a spline-coupling system can be analyzed using the same formula.
The results of the simulations also show that the spline-coupling system can be modeled using MASTA, a high-level commercial CAE tool for transmission analysis. In this case, the spline segments were modeled as a series of spline segments with variable stiffness, which was calculated based on the initial gap between spline teeth. Then, the spline segments were modelled as a series of splines of increasing stiffness, accounting for different manufacturing variations. The resulting analysis of the spline-coupling geometry is compared to those of the finite-element approach.
Despite the high stiffness of a spline-coupling system, the contact status of the contact surfaces often changes. In addition, spline coupling affects the lateral vibration and deformation of the rotor. However, stiffness nonlinearity is not well studied in splined rotors because of the lack of a fully analytical model.

Characteristics of spline-coupling

The study of spline-coupling involves a number of design factors. These include weight, materials, and performance requirements. Weight is particularly important in the aeronautics field. Weight is often an issue for design engineers because materials have varying dimensional stability, weight, and durability. Additionally, space constraints and other configuration restrictions may require the use of spline-couplings in certain applications.
The main parameters to consider for any spline-coupling design are the maximum principal stress, the maldistribution factor, and the maximum tooth-bearing stress. The magnitude of each of these parameters must be smaller than or equal to the external spline diameter, in order to provide stability. The outer diameter of the spline must be at least 4 inches larger than the inner diameter of the spline.
Once the physical design is validated, the spline coupling knowledge base is created. This model is pre-programmed and stores the design parameter signals, including performance and manufacturing constraints. It then compares the parameter values to the design rule signals, and constructs a geometric representation of the spline coupling. A visual model is created from the input signals, and can be manipulated by changing different parameters and specifications.
The stiffness of a spline joint is another important parameter for determining the spline-coupling stiffness. The stiffness distribution of the spline joint affects the rotor’s lateral vibration and deformation. A finite element method is a useful technique for obtaining lateral stiffness of spline joints. This method involves many mesh refinements and requires a high computational cost.
The diameter of the spline-coupling must be large enough to transmit the torque. A spline with a larger diameter may have greater torque-transmitting capacity because it has a smaller circumference. However, the larger diameter of a spline is thinner than the shaft, and the latter may be more suitable if the torque is spread over a greater number of teeth.
Spline-couplings are classified according to their tooth profile along the axial and radial directions. The radial and axial tooth profiles affect the component’s behavior and wear damage. Splines with a crowned tooth profile are prone to angular misalignment. Typically, these spline-couplings are oversized to ensure durability and safety.

Stiffness of spline-coupling in torsional vibration analysis

This article presents a general framework for the study of torsional vibration caused by the stiffness of spline-couplings in aero-engines. It is based on a previous study on spline-couplings. It is characterized by the following 3 factors: bending stiffness, total flexibility, and tangential stiffness. The first criterion is the equivalent diameter of external and internal splines. Both the spline-coupling stiffness and the displacement of splines are evaluated by using the derivative of the total flexibility.
The stiffness of a spline joint can vary based on the distribution of load along the spline. Variables affecting the stiffness of spline joints include the torque level, tooth indexing errors, and misalignment. To explore the effects of these variables, an analytical formula is developed. The method is applicable for various kinds of spline joints, such as splines with multiple components.
Despite the difficulty of calculating spline-coupling stiffness, it is possible to model the contact between the teeth of the shaft and the hub using an analytical approach. This approach helps in determining key magnitudes of coupling operation such as contact peak pressures, reaction moments, and angular momentum. This approach allows for accurate results for spline-couplings and is suitable for both torsional vibration and structural vibration analysis.
The stiffness of spline-coupling is commonly assumed to be rigid in dynamic models. However, various dynamic phenomena associated with spline joints must be captured in high-fidelity drivetrain models. To accomplish this, a general analytical stiffness formulation is proposed based on a semi-analytical spline load distribution model. The resulting stiffness matrix contains radial and tilting stiffness values as well as torsional stiffness. The analysis is further simplified with the blockwise inversion method.
It is essential to consider the torsional vibration of a power transmission system before selecting the coupling. An accurate analysis of torsional vibration is crucial for coupling safety. This article also discusses case studies of spline shaft wear and torsionally-induced failures. The discussion will conclude with the development of a robust and efficient method to simulate these problems in real-life scenarios.

Effect of spline misalignment on rotor-spline coupling

In this study, the effect of spline misalignment in rotor-spline coupling is investigated. The stability boundary and mechanism of rotor instability are analyzed. We find that the meshing force of a misaligned spline coupling increases nonlinearly with spline thickness. The results demonstrate that the misalignment is responsible for the instability of the rotor-spline coupling system.
An intentional spline misalignment is introduced to achieve an interference fit and zero backlash condition. This leads to uneven load distribution among the spline teeth. A further spline misalignment of 50um can result in rotor-spline coupling failure. The maximum tensile root stress shifted to the left under this condition.
Positive spline misalignment increases the gear mesh misalignment. Conversely, negative spline misalignment has no effect. The right-handed spline misalignment is opposite to the helix hand. The high contact area is moved from the center to the left side. In both cases, gear mesh is misaligned due to deflection and tilting of the gear under load.
This variation of the tooth surface is measured as the change in clearance in the transverse plain. The radial and axial clearance values are the same, while the difference between the 2 is less. In addition to the frictional force, the axial clearance of the splines is the same, which increases the gear mesh misalignment. Hence, the same procedure can be used to determine the frictional force of a rotor-spline coupling.
Gear mesh misalignment influences spline-rotor coupling performance. This misalignment changes the distribution of the gear mesh and alters contact and bending stresses. Therefore, it is essential to understand the effects of misalignment in spline couplings. Using a simplified system of helical gear pair, Hong et al. examined the load distribution along the tooth interface of the spline. This misalignment caused the flank contact pattern to change. The misaligned teeth exhibited deflection under load and developed a tilting moment on the gear.
The effect of spline misalignment in rotor-spline couplings is minimized by using a mechanism that reduces backlash. The mechanism comprises cooperably splined male and female members. One member is formed by 2 coaxially aligned splined segments with end surfaces shaped to engage in sliding relationship. The connecting device applies axial loads to these segments, causing them to rotate relative to 1 another.