G9165-G9220 Motor Grader Presentation 10460 [PDF]

Zitiervorschau

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Low-end products. Others are high-end products

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All motor graders that SDLG have are developed on “G9190 platform”, they are remarkably similar. So we take G9190 for example. And I will explain the different points.

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Do you know what dose this mean? G9190 can be divided into three parts: G, 9, 190.G represent Drive type,,, Rear wheel hydrodynamic drive.

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G9190 is the multi-purpose products with high efficiency, high accuracy. It can realize the function of digging ditch, scraping slope, leveling ground, snow removal, it can be called universal machine.

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We will talk about this unversal machine from four aspects: energy saving, reliable comfort and convenient. When it comes to energy saving, we have to talk about engine.

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As we all know, graders working condition is complex, some times is low speed and heavy duty, some times the load is very light, you can drive at a high speed. One power curve is not enough to adapt to the complex working condition. “0”means low power, choose “0” at the condition of low speed and heavy load or finishing “1”means middle power, choose “1” at the condition of road maintenance and leveling “2”means high power, choose “2” at the condition of snow removal and transitions Selector switch Achieve the goal of energy saving

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But not all of them have this function. As the engine are different. Motor graders adopt two brand engine：Weichai and DEUTZ, Weichai engine only have one engine power curve

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Motor grader adopt high pressure gear pump, so it’s the constant hydraulic system, American HUSCO control valve The system is constant flow and open loop system,

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Reliable is one important performance of grader. Let’s talk about from front axle. The main function is guidance and support, it is installed on front frame by one pin, the Max. swing angle is 16 degree, the Max. tilt angle of front wheel is 18 degree, the Max. steering angle is 50

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When working on slope inclining front wheel can increase adhesive force and stability. Inclining front wheel can offset side force from material and prevent front wheel sidesliping.

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The brand of rear axle and balance box is Meritor, the axle is equipped with No-spin differential box, which not only make sure that both side driving wheel run at different speed, but also ensure to transfer total torque to another side when one side of driving wheel slip. And the balance box can swing forward and backward to make sure four wheels can down to the ground at same time.

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One commonly action of motor graders is rotate blade, in market, there are two structure to realize this function, one is motor and reducer, one is cylinder and rotary valve. SDLG choose latter, this structure have three obvious advantages, 1.It can rotate with load 2.High reliability and working accuracy 3.Lower cost Because motor have one character that is minimum steady speed. It will crawl at low speed motion. Besides, cylinder have a higher efficiency than motor, the motor have poor volume efficiency when it at low speed.

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From the picture we can see that SDLG’s products are outer gear ring, and some other products are inner gear ring, and this structure is easy to gather soil and not easy to clean.

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Relative movement between link span and gear ring can lead to abrasion. It looks like we need to fill grease to reduce abrasion. But we don’t because it adopt wear-resisting plate between gear ring and link span. So we don’t need to fill in grease everyday.

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And this part, we also don’t need to fill grease, because we adopt composite bearings, they are no-lubricated bearings. Some other products adopts shaft sleeve, need to add grease everyday, looks very dirty.

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From this picture we can see that the front frame is box-type structure. This structure have high strength and high reliability.

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Full sealing cab. The configuration is FOP&ROP cab. The seat, flywheel and operation desk can be adjusted, you will find one comfortable position finally, and I will show you how to adjust in walk around training. Actually, the cab is not good enough, like the view is not good compare with CAT,

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I just said the grader that equipped with DDE engine have two features, the first is have three power curve, the second is automatic cruise, This function is the same with manual accelerator control. It can make engine run at a certain speed higher than idle speed. Increment of rotary speed is determined by the pressing length of time not number of times.100r/s

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Adopt gas spring, reduce labor intensity

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The connection between front frame and link span adopt ball joint type. This ball joint are dismountable. If abrasion, you can disassemble the fixed bolts and replace it, which is very convenient.

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Solenoid valve and cylinder control the locking of swing frame. Swing frame have seven location, and indicator have seven holes. Every hole is correspond with every location. You just need to sit in the cab and move you fingers you can make it.Other products adopt locking pin to lock swing frame, which need two person to make it. One sit in cab and operate, the other pull or insert the pin at same time. Not convenient.

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Steering gear is located on the outside of cab, so the vibration, noise and heat can’t deliver into the cab. Ensure the cab have a comfortable operating environment.

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Scarifier and rear scarifier are different, we can distinguish from two points. NO. one is that rear scarifier have more tooth. NO. two is that the rear scarifier tooth is smaller. In one word, the tooth of rear scarifier is more but smaller. In product manual.

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I think you may be puzzled about this description. It do make people feel confused.

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