China wholesaler Hand Push Walking Back Farm Machine Lawn Mower for Home Use with Good quality

Product Description

 Hand push walking back farm machine lawn mower for home use

Parameter of the Grass mower and lawn mower :

Model Name 1GC4.0
Drive Type Self-propelled
Engine  company LONCIN
Max power 196CC,4.1KW
Cutting width 450mm 
Machine material Steel
Height adjustment Central adjustment 
Cutting height 30mm
Wheels Front 6” / Rear 350-4 Rubber wheels
Gear box Type High speed, N, Low speed
Noise level 71dB
Carton dimensions 90x58x53cm
Loading quantity
(20GP/40GP/40HC)
100/200/260
Throttle control yes
Packing box export carton case 

About us:
HangZhou innovate machinery Co., Ltd is a produce company, we are specialized in research, development and production of power tiller, brush cutter, lawn mower, chain saw, power sprayer and electric tools. We located in HangZhou city, ZheJiang province, China. With convenient transportation access, All of our products comply with international quality standards and are greatly appreciated in a variety of different markets through the world.

We are looking forward to forming successful business relationships with the new clients around the world in the near future.

We are 1 of the fast growing companies in the field of power machinery, garden and small agricultural machinery. With over 12 years dedicated in the field, our company now becomes a professionally well-known brand with absolute advantage in R & D, marketing, and after-sale service in the field of general purpose power machinery and small agricultural machinery. Since the establishment of our company, we aim at providing the world with high quality products at competitive prices. We always use raw materials of high quality standard with improved processing instead of low quality which could not ensure the benefit of customers. For quality control, in order to ensure the quality of our products, we produce most of the die-casting parts and gears by ourselves. And meanwhile, we test each piece of our products before they are released to the market. Meanwhile, a well-educated and organized after-sale service team always provides professional maintenance, technical consultation and technical training.

We are always here looking for distributors from all over the world for mutual-beneficial cooperation.

All products provided 1 year warranty and spare parts are always available anytime after order. Also we provide OEM and ODM service.

Your inquires are always welcome and our sales team will reply you within 24hours.

Our products sell well all over the country and have been exported abroad for more than 30 countries and regions.

We provide good service to our customers, whenever our customer requests, we will send our technicians or mechanics travel to overseas to help customer for machines installation, commissioning and maintenance. We also provide free training in China for our customers, our customer can send their mechanics to China for training.

We are willing to help our customers to get more business, therefore we always provide good quality products with competitive prices.

We are sincerely willing to cooperate with enterprises from all over the world in order to realize a CZPT situation.
Please feel free to contact us.
The lawn mower have 3 speed, the high speed normally use at young grass that is easy to cut, the low speed is used for the tall and thick grass which is not wasy to cut, so we slow down the forward speed to let the machine working more efficient.

 

The grass mower have a blade under the machine , with the power of engine , the blade rotate at high speed ,in order to cutter grass. The blade to the ground distance is 5cm, the length of the blade is 45cm. It is suitable for any kinds of grass cutting.

Our factory view:
 

We are power tools produce company, our machine include power tiller ,chain saw,grass cutting machine,lawn mower and so on.
our main service is OEM service, we have successfully provide machine with our customer’s logo. Hope to cooperate with you and hope to provide good service to you. 

Our assembly working shop:

With our assemble line, we can assemble power tiller 300 sets 1 day , different produce cost different assemble time, but it is not big difference. Like the lawn mower or grass mower, we can assemble 400 sets per day. Cooperate with us , we will successfully finish your order on time.

Please have a look of our power tiller  and mower warehouse:
 

We have a standard warehouse, this is a part of our stock. Normally we have 300 sets stock of each type  machine, include power tiller and lawn mower or grass mower . if you order is small we can delivery immediately.

   Delivery the machine:

Every time we delivery the machine, we ask the shipping company transport the container to our warehouse , then we load the container in our factory. By doing this , we can check the goods carefully and we can make sure the machine no damage during loading.The lawn mower and the grass cutter mower each 40ft container can load 210sets.

Join us, with our wide range of the product, as power tiller ,cultivator, weeding machine,lawn mower,grass mower and chain saw, let’s working together to build a win win relation in near future. we will provide good OEM service for you, we believe that quality first, customer first and we will continue to do it.

FAQ of the lawn mower and grass mower
Q: What is the MOQ?
A:10 sets.
Q:What is the payment term?
A: We choose T/T as the first choice.
Q:What is the warranty time?
A: Normally we provide 1 year as the warranty time.
Q:What is the delivery time:
A: Normal goods we have stock,if OEM then need 30days.
Q: Do you provide free sample?
A: Yes.
Q:How to make aftersale service?
A:We can video call or send you assemble video for you to understand the structure of the lawn mower.
Q:Can i do your agent?
A:Surely yes, we not retail,we mainly do agent service.

 

Analytical Approaches to Estimating Contact Pressures in Spline Couplings

A spline coupling is a type of mechanical connection between 2 rotating shafts. It consists of 2 parts – a coupler and a coupling. Both parts have teeth which engage and transfer loads. However, spline couplings are typically over-dimensioned, which makes them susceptible to fatigue and static behavior. Wear phenomena can also cause the coupling to fail. For this reason, proper spline coupling design is essential for achieving optimum performance.
splineshaft

Modeling a spline coupling

Spline couplings are becoming increasingly popular in the aerospace industry, but they operate in a slightly misaligned state, causing both vibrations and damage to the contact surfaces. To solve this problem, this article offers analytical approaches for estimating the contact pressures in a spline coupling. Specifically, this article compares analytical approaches with pure numerical approaches to demonstrate the benefits of an analytical approach.
To model a spline coupling, first you create the knowledge base for the spline coupling. The knowledge base includes a large number of possible specification values, which are related to each other. If you modify 1 specification, it may lead to a warning for violating another. To make the design valid, you must create a spline coupling model that meets the specified specification values.
After you have modeled the geometry, you must enter the contact pressures of the 2 spline couplings. Then, you need to determine the position of the pitch circle of the spline. In Figure 2, the centre of the male coupling is superposed to that of the female spline. Then, you need to make sure that the alignment meshing distance of the 2 splines is the same.
Once you have the data you need to create a spline coupling model, you can begin by entering the specifications for the interface design. Once you have this data, you need to choose whether to optimize the internal spline or the external spline. You’ll also need to specify the tooth friction coefficient, which is used to determine the stresses in the spline coupling model 20. You should also enter the pilot clearance, which is the clearance between the tip 186 of a tooth 32 on 1 spline and the feature on the mating spline.
After you have entered the desired specifications for the external spline, you can enter the parameters for the internal spline. For example, you can enter the outer diameter limit 154 of the major snap 54 and the minor snap 56 of the internal spline. The values of these parameters are displayed in color-coded boxes on the Spline Inputs and Configuration GUI screen 80. Once the parameters are entered, you’ll be presented with a geometric representation of the spline coupling model 20.

Creating a spline coupling model 20

The spline coupling model 20 is created by a product model software program 10. The software validates the spline coupling model against a knowledge base of configuration-dependent specification constraints and relationships. This report is then input to the ANSYS stress analyzer program. It lists the spline coupling model 20’s geometric configurations and specification values for each feature. The spline coupling model 20 is automatically recreated every time the configuration or performance specifications of the spline coupling model 20 are modified.
The spline coupling model 20 can be configured using the product model software program 10. A user specifies the axial length of the spline stack, which may be zero, or a fixed length. The user also enters a radial mating face 148, if any, and selects a pilot clearance specification value of 14.5 degrees or 30 degrees.
A user can then use the mouse 110 to modify the spline coupling model 20. The spline coupling knowledge base contains a large number of possible specification values and the spline coupling design rule. If the user tries to change a spline coupling model, the model will show a warning about a violation of another specification. In some cases, the modification may invalidate the design.
In the spline coupling model 20, the user enters additional performance requirement specifications. The user chooses the locations where maximum torque is transferred for the internal and external splines 38 and 40. The maximum torque transfer location is determined by the attachment configuration of the hardware to the shafts. Once this is selected, the user can click “Next” to save the model. A preview of the spline coupling model 20 is displayed.
The model 20 is a representation of a spline coupling. The spline specifications are entered in the order and arrangement as specified on the spline coupling model 20 GUI screen. Once the spline coupling specifications are entered, the product model software program 10 will incorporate them into the spline coupling model 20. This is the last step in spline coupling model creation.
splineshaft

Analysing a spline coupling model 20

An analysis of a spline coupling model consists of inputting its configuration and performance specifications. These specifications may be generated from another computer program. The product model software program 10 then uses its internal knowledge base of configuration dependent specification relationships and constraints to create a valid three-dimensional parametric model 20. This model contains information describing the number and types of spline teeth 32, snaps 34, and shoulder 36.
When you are analysing a spline coupling, the software program 10 will include default values for various specifications. The spline coupling model 20 comprises an internal spline 38 and an external spline 40. Each of the splines includes its own set of parameters, such as its depth, width, length, and radii. The external spline 40 will also contain its own set of parameters, such as its orientation.
Upon selecting these parameters, the software program will perform various analyses on the spline coupling model 20. The software program 10 calculates the nominal and maximal tooth bearing stresses and fatigue life of a spline coupling. It will also determine the difference in torsional windup between an internal and an external spline. The output file from the analysis will be a report file containing model configuration and specification data. The output file may also be used by other computer programs for further analysis.
Once these parameters are set, the user enters the design criteria for the spline coupling model 20. In this step, the user specifies the locations of maximum torque transfer for both the external and internal spline 38. The maximum torque transfer location depends on the configuration of the hardware attached to the shafts. The user may enter up to 4 different performance requirement specifications for each spline.
The results of the analysis show that there are 2 phases of spline coupling. The first phase shows a large increase in stress and vibration. The second phase shows a decline in both stress and vibration levels. The third stage shows a constant meshing force between 300N and 320N. This behavior continues for a longer period of time, until the final stage engages with the surface.
splineshaft

Misalignment of a spline coupling

A study aimed to investigate the position of the resultant contact force in a spline coupling engaging teeth under a steady torque and rotating misalignment. The study used numerical methods based on Finite Element Method (FEM) models. It produced numerical results for nominal conditions and parallel offset misalignment. The study considered 2 levels of misalignment – 0.02 mm and 0.08 mm – with different loading levels.
The results showed that the misalignment between the splines and rotors causes a change in the meshing force of the spline-rotor coupling system. Its dynamics is governed by the meshing force of splines. The meshing force of a misaligned spline coupling is related to the rotor-spline coupling system parameters, the transmitting torque, and the dynamic vibration displacement.
Despite the lack of precise measurements, the misalignment of splines is a common problem. This problem is compounded by the fact that splines usually feature backlash. This backlash is the result of the misaligned spline. The authors analyzed several splines, varying pitch diameters, and length/diameter ratios.
A spline coupling is a two-dimensional mechanical system, which has positive backlash. The spline coupling is comprised of a hub and shaft, and has tip-to-root clearances that are larger than the backlash. A form-clearance is sufficient to prevent tip-to-root fillet contact. The torque on the splines is transmitted via friction.
When a spline coupling is misaligned, a torque-biased thrust force is generated. In such a situation, the force can exceed the torque, causing the component to lose its alignment. The two-way transmission of torque and thrust is modeled analytically in the present study. The analytical approach provides solutions that can be integrated into the design process. So, the next time you are faced with a misaligned spline coupling problem, make sure to use an analytical approach!
In this study, the spline coupling is analyzed under nominal conditions without a parallel offset misalignment. The stiffness values obtained are the percentage difference between the nominal pitch diameter and load application diameter. Moreover, the maximum percentage difference in the measured pitch diameter is 1.60% under a torque of 5000 N*m. The other parameter, the pitch angle, is taken into consideration in the calculation.

China wholesaler Hand Push Walking Back Farm Machine Lawn Mower for Home Use     with Good qualityChina wholesaler Hand Push Walking Back Farm Machine Lawn Mower for Home Use     with Good quality