wind power bearing

The installation of the bearing should clean environment, small particles from entering the bearing will shorten bearing life. When replacing bearings to maintain a clean environment is very important. Allowed to tap with a hammer bearing note bearing not fall to the ground (or similar improper handling). Single Row Ball Slewing Bearing‍ Before installing the shaft and the bearing housing should also check the condition of even a small amount of wear can also lead to poor fit, thereby causing early failure of the bearing.

On the wheel hub bearing unit, do not attempt to disassemble or adjust the wheel hub bearing seals unit, otherwise it would cause water damage to seals or dust from entering. Even ring and inner ring raceway are damaged, resulting in permanent failure of the bearing.

The ring is equipped with ABS unit has a magnetic thrust bearing ring, which thrust ring can not be a collision, impact or collision with other magnetic field. Remove from the box before installation, so that they stay away from magnetic fields, such as the use of electric motors or electric tools. mobile crane bearing‍ When installing these bearings, the road test by observing the dashboard ABS alarm pin to change the bearing operation.

Equipped with ABS wheel hub bearing magnetic thrust ring, thrust ring mounted in order to determine which side, you can use a small light near the edge of something * bearings, magnetic bearings will be attracted by it generated. When installing a magnetic thrust will take the side of the ring pointing inside, is on the ABS sensor. Note: Incorrect installation may lead to functional brake system failure.

Many of the bearings are sealed, this type of bearing is not needed throughout the life of the grease increases. Other non-sealed bearings such as double row tapered roller bearings in the installation must be added grease. Because different lumen size of the bearing, it is difficult to determine how much of the added fat, the most important thing is to ensure that the grease bearing if too much fat, when the bearing is rotating, the excess conical bearing‍ oil will bleed. General Experience: During installation, the total amount of oil to account for 50% of the bearing clearance.

Install the lock nut due to the different types of bearings and bearing housings, the size difference between the torque is great. Note reference to the relevant instructions.‍

wheel bearing Precautions Wheel Bearing

Wheel Bearing worn or damaged wheel bearing or hub units will happen to your vehicle and the cost of higher anachronistic failure in traveling the road, or even damage to your safety. Wheel bearings in use and installation Please note the following:

1, in order to ensure maximum safety and reliability, it is recommended that you no matter how long the age of the vehicle should always check the wheel bearings - note bearing for wear marine crane bearing‍ early warning signals: including any friction noise when rotating or turning wheel suspension combination when the deceleration is not normal.

Rear-wheel drive vehicle is recommended for the vehicle to 38,000 km is to deal with the front wheel hub bearing lubrication. When replacing the brake system, check the bearing and replace the seal.

2, If you hear noise emitted wheel bearing parts, first of all, it is important to find the location of the noise occurs. There are many moving parts may produce noise, but also may be some rotation member and the rotating member occurs without contact. If the confirmation is bearing noise, bearing may be damaged and need replacing.

3, because the front wheel bearing failure on both Single Row Ball Slewing Bearing‍ sides led to similar working conditions, so even if only one bearing bad, it is recommended to replace in pairs.

4, wheel bearing more sensitive, in any case need to adopt the right approach and the right tools. In storage and during installation, the bearing parts can not be damaged. Requires a large number of bearings pressed into the pressure, so the need of special tools. Be sure to reference vehicle manufacturers instructions.

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LYHY deck crane bearing Repair and maintenance

How wheel bearing repair and maintenance

Automotive wheel bearings is important to walk parts. Wheel bearings reduce friction chassis bears during the operation, the task of maintaining normal driving the car. If a wheel bearing failure, single direction thrust ball bearing‍ may cause the phenomenon of noise, deck crane bearing fever, especially the front wheel is more obvious, easily lead to runaway direction dangerous phenomenon. Therefore, the wheel bearings must be maintained on schedule.

Check wheel bearings

(1) Check the tightness of wheel bearings, first inspected the car at one end of the wheel hub axle set up, with the support car stool, wood and other appliances to cover the car a conical bearing‍ good car safely stand.

(2) Rotate the wheel a few laps examined to see whether the smooth rotation, if there is no abnormal noise. If the rotation is not smooth and there is friction sound, indicating that the brake part is not normal; if there is no noise, when the rotation is not smooth and tight loose, indicating that the bearing part is not normal. When the above irregularities should dismantling the hub. For a small car, check wheel bearings, with both hands up and down the side of the tire, the tire pulled his hands back and forth, repeat several times. If normal, then there should be no Songkuang and arrest feeling; If there are obvious Songkuang swing feel, should be overhauled wheels.

(3) Check the braking areas. Usually when marine crane bearing‍ checking wheel bearings, with wheel brake inspection, if there are traces of oil inside of the tire, probably the brake cylinder or brake lines caused by the oil spill, it is timely to identify the reasons, be excluded.

wind power bearing Wheel Bearing Maintenance

Before removing wheels, wheel maintenance should do the preparatory work, the car parked and set up axles, in order to ensure the maintenance of security operations.

(1) Remove the hub shaft head decorative conical bearing‍ cover, dust cover;

(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If disc brakes, the brake should be removed, and then used pliers to remove the lock ring or locking pin.

(3) with a special tool to remove the wheel hub;

(4) scrape bearings, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and wipe dry with a cloth, wipe with a cloth wheels last cavity.

(5) Check the wheel bearings and bearing races, found cracks, fatigue spalling and loose roller bearings and other phenomena, replace bearings. If you find pitting on the bearing race, single direction thrust ball bearing‍ it should replace the bearings.

When cope with the situation (6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the largest wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Burr is not allowed to play, pitting the journal to narrow the gap.‍

wheel bearing

Upon completion of all parts meet the requirements, the inner bearing grease after release hub.

When grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge from the other side of the bearing. In the hub and shaft Double Row Ball Slewing Bearing‍ cranial cavity Apply a thin layer of grease to make it play a role in rust. Note that the hub cavity do not apply too much grease, otherwise it will affect the cooling and braking.

The hub and the outer bearing back onto the journal, hand-axis head adjustment nut, and then use the required shaft torque wrench to tighten the adjustment nut. After tightening the nut, turn the wheel a few times to be around to see the bearing installation; on the other hand, by turning the bearing and seat properly fit. At this time bearing tightness appropriate wheels to rotate freely and not feel the axial clearance.

Finally, in order to install the locking plate, fixing nut, tires, dust cover and decorative cover and other parts.

Wheel bearings adjusted, with some marine crane bearing‍ mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, is caused by the bearing adjustment too tight, should be re-adjusted appropriately relaxed bearing tightness.

Non-normal wheel bearing damage causes

In the repair process, often found that some cars have a greater driving noise, no abnormal tire wear inspection, turn the wheels on the lift no abnormal sound. This phenomenon is often caused by abnormal wheel bearing damage caused by the so-called non-normal means of bearing damage caused by the installation of. Automotive wheel bearings are generally double row ball bearing, at the time of installation of the bearing installation if you use a hammer percussion, or when the bearing is installed into the bearing inner race of the bearing by pressing installed, thin wall bearings‍ will cause one side of the bearing raceways damage. Noise when the vehicle is traveling, and when the wheelie is better since the raceway side, and therefore noise was heard. Correct installation operation is the key to long life bearings.

LYHY deck crane bearing With ABS sensor wheel hub bearing units

As more and more cars equipped with ABS, ABS function is also growing. To solve the wheel speed sensor wheel speed to provide a signal to the ABS costs exist, installation and signal quality and other aspects of the development of the integrated ABS pulse generator hub bearing unit.

Wheel bearing units with ABS sensors, conical bearing‍ including flanges, ring gear rotating body, the seal assembly and hub with ABS sensors on the wheels, ABS sensor ring magnet rotating body suit on, and with the phase complexes; rotating body and a ring gear fixed to the flange was connected. ABS sensor includes a housing, the magnet and the coil, the ring magnet fitted over the rotating member, the rotating member fitted with the ring magnet; coil via a signal line and a connector. Rotating body and flange ring was spline connection. End face is provided with a flange with bolt holes directly with suspension, brakes and tires connections. Hole in the flange has splines can be used in conjunction with a constant velocity drive shaft. The utility model is beneficial effect: the structure to replace the original car steering Double Row Ball Slewing Bearing‍ knuckle, wheels, bearings portfolio, both the three functions are integrated, but also greatly reduces the size of the original structure, reducing the weight, but also greatly improving the reliability.

wind power bearing the surface cleaning method:

Non-standard and standard bearing sizes bearing structure is not on the table belongs to the non-non-standard bearing, which is produced according to customer requirements such as bearings. Non-standard internal and external 49 standard 50 like nothing else. That 49 is a non-standard size structure bearing‍ according to the customer that you have to book than otherwise you know that 49 is a hybrid or 50 GB.

There is not the same structure. For example, some multi-ball roller. Or less. This rare

Generally be universal full name is non-standard bearings

Non-standard bearings rust methods

1, surface cleaning: cleaning must be in accordance with the nature of the surface rust and the prevailing conditions, the appropriate method is selected. Commonly agricultural bearings‍ used solvent cleaning, chemical treatment and mechanical cleaning method to clean.

2, the surface was cleaned by washing by filtration and dried in the drying compressed air, or a dryer 120 ~ 170 ℃ is dried, dry clean gauze can also be used.

Second, anti-rust oil coating method:

1, soak method: Soak in some small items using anti-rust oil, allowed a layer of rust on the surface adhesion method grease. The film thickness can be achieved by controlling the temperature or viscosity rust preventive oil.

2, brush or spray for NA immersion outdoor construction equipment or special shape products, we should pay attention when brushing does not produce accumulation, but also pay attention coated to prevent leakage.

3, spray some large rust-proof material coated with oil offshore crane bearing‍ immersion method can not be used, usually with about 0.7Mpa pressure spraying compressed air filter in the air cleaner place. Spray application of anti-rust oil or solvent dilution thin rust oil, but it must be used to improve fire safety and labor protection measures.

wheel bearing Introduction and current situation of marine cranes

Marine cranes are executed in the marine environment in a special crane transport operations, mainly for the transfer of cargo between ship transport, maritime supply, delivery and recovery of important tasks, such as underwater equipment. Special application to offshore marine crane control environment is a big challenge. On the one hand, similar to the land-based cranes of various under-actuated devices, the mobile crane bearing‍ need to control the swing of the load during transport produce to ensure its accuracy and transport efficiency; on the other hand, because of this crane is fixed on the ship and other sports platform, the platform itself Games have a strong impact on the load movement, and in many cases, the load lifting and landing point of the movement and the movement of the crane itself is inconsistent. Specifically, in the course of their work, the crane ship and the ship will receive pitching with the waves, roll and heave, these movements will cause the load to occur swing; especially in the lifting process, easily lead to such movement of the ship has been suspended since the load again collided with the deck, or to have been put down but not yet out of the hook load vacant again, these will threaten the safety of operations. Especially during inter ammunition supply ship, the coupled motion can cause very serious consequences.

Marine crane control is divided into lower hull motion control and suppress the impact of vertical lateral load anti-swing swing two ways. For vertical control, the commonly used agricultural bearings‍ method is to connect the mechanical structure of the crane on board by receiving ship, and the perception of its relative motion, so sling length change and receiving ship heave motion synchronized to the relative movement of the two ships to be compensated, complete landing transport loads on this basis. This method of mechanical structure cranes have special requirements, but also have a greater quality of lifting restrictions. Other scholars lifting equipment for underwater dynamics modeling process, they consider the sling flexibility and hydrodynamic and other factors, and based on the feedback linearization method were designed trajectory tracking and disturbance rejection controller. Feedforward-based synchronization techniques to compensate for the waves heave motion effects, and ultimately into the water on the course load to achieve precise control. In recent years, the lateral anti-sway control has also been a lot of attention. In order to strengthen the sling and the load swing control, on the part of the crane installation Malwith agencies that joined in the middle of the rope sling traction to reduce swinging loads. For marine crane with a special mechanism that, in recent years, made ​​a variety of continuous modeling and control methods. However, such restrictions bodies crane system on a larger working space, reduces the flexibility of the original system. For this reason, many studies without changing the mechanical structure of the crane based on the use of a variety of sensors to obtain the ship, crane, conical bearing‍ the motion information of the load, and to suppress the oscillation of the load during transport through the rational design of arm motion controller. Among them, the use of command shaping technology, the pitching rotation is controlled crane jib, and verified on the pitch and the hull is modeled arm movement, and through the feedforward and feedback control on the part of small-scale experimental platform strategies to inhibit the combination of unilateral load swings upward. Position feedback control using the time lag method, two-dimensional by manipulating pitch and swing arm to reduce the load swing angle. Laboratory design of a control scheme based on multi-sensor data fusion, which by controlling the movement of the crane to compensate for ship motion, to better suppress the swing of the load.

LYHY deck crane bearing Part Derrick

By the boom, lifting column (or lifting mast), rigging and winches (or winch) and other components (see Figure derrick map). Derrick is a traditional boat landing equipment, although many ropes, operational problems, but the structure is simple, easy to manufacture, low cost, is still widely used.

Single-lever operation and axial bearing‍ dual lever

Boom device with loading and unloading cargo, a single lever operation and dual lever in two ways. Single-pole loading and unloading operations are carried out with a boom, boom lift cargo after pulling lanyard boom swing together with the goods overboard or cargo hatch, and then down the goods, then boom back to the original bit, so from operations. Every time when loading and unloading boom swing with lanyard, so inefficient, labor-intensive. Dual lever with two booms, one placed over the cargo hatch, and another extending outboard, two boom with a lanyard attached to a working position. Two Crane boom with cable is attached to a hook. As long as were close, put two cargo runners, you can mobile crane bearing‍ unload the cargo from the ship to the dock, or the goods from the loading dock to the boat. Dual lever handling efficiency is higher than single lever operation, labor intensity is also lighter.

wheel bearing Marine Cranes Dual topper derrick boom means and Hebert

Improved boom device was later arise. Dual topper derrick boom device is operated by a single lever improvements made, the device only cargo runners and about two separate topper. Crane boom by a winch and two topping winch to manipulate, easy to operate, high working efficiency. Hebert derrick boom device by double-lever operation improvements made​​, the device has a cargo winches, extremely heavy winch cable and lanyard. agricultural bearings‍ With the winch boom may soon put in any position. While also pointing put cargo lifting and fall within the working radius of the boom to improve handling efficiency. This is an important step towards fully automated cargo handling forward.

Deck crane

Set machinery in the ship deck. This compact crane structure, the ship has more deck area available, less impact on the bridge upstairs sight. Deck cranes easy operation, high working efficiency, and flexibility, before the job is no tedious preparatory work widely.

Deck cranes commonly used fixed rotating cranes, mobile cranes and gantry cranes rotation. Transmission power transmission and electricity - two hydraulic drive.

Fixed rotating crane

This crane most widely used, can be used axial bearing‍ alone or in pairs in the starboard job. Weight is generally 3 to 5 tons. In the multi-purpose boat, requires a single crane can lift a 20 ft container, twin-lift can lift 40 feet container (30 tons), its starting weight of up to 25 to 30 tons.

wind power bearing Mobile rotating crane

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In the span of a large crane loading and unloading requirements, but I hope not too long crane boom situation, often using mobile rotating crane. Mobile cranes along the ship's self aligning bearing‍ rotation and longitudinal movement of two kinds of lateral movement.

Gantry Cranes

This crane is a full container ship (see container ships) and load barges are widely used, usually four-legged type or C type. There is an extendable boom, lifting rungs and a removable tray and cab. Higher levels of bridge girders stowed on the deck of the container, and automatic positioning device, when shipping containers can be placed exactly fall in separate compartments or containers stacked on deck. The number of gantry crane barge load containers on board more than that, from the weight of up to several hundred tons.

Other handling machinery

There are lifts, elevators and conveyors. Boat lift is a vertical movement of the machine along the rails for lifting and lowering between each deck cargo use. Such as multi-use lift decks connected to the delivery of goods on the ro-ro. There lift scissor on ro-ro, chain and several species, its length is 9 to 18.5 meters, agricultural bearings‍ a width of 3 to 5 meters. Also installed on some carrier barge loading and unloading cargo barge lift, but lifting capacity is much greater than on the ro-ro ships. Hoist is larger in the vertical direction or inclined direction of the continuous movement of goods. Conveyor is a little slope in the horizontal direction or the direction of the continuous delivery of goods. Both mechanical dump is used in loading and unloading of a ship or boat through the side door.

wind power bearing Repair and maintenance

How wheel bearing repair and maintenance
Automotive wheel bearings is important to walk parts. Wheel bearings reduce friction chassis bears during the operation, the task of maintaining normal driving the car. If a wheel bearing failure, may cause the phenomenon of noise, bearing fever, especially the front wheel is more obvious, easily lead to runaway direction dangerous phenomenon. Therefore, the wheel bearings must be maintained on schedule.
Check wheel bearings
(1) Check the tightness of wheel bearings, reali slim bearings first inspected the car at one end of the wheel hub axle set up, with the support car stool, wood and other appliances to cover the car a good car safely stand.
(2) Rotate the wheel a few laps examined to see whether the smooth rotation, if there is no abnormal noise. If the rotation is not smooth and there is friction sound, indicating that the brake part is not normal; if there is no noise, when the rotation is not smooth and tight loose, indicating that the bearing part is not normal. When the above irregularities should dismantling the hub. For a small car, check wheel bearings, with both hands up and down the side of the tire, the tire pulled his hands back and forth, repeat several times. If normal, then there should be no Songkuang and arrest feeling; If there are obvious Songkuang swing feel, should be overhauled wheels.
(3) Check the braking areas. Usually when checking wheel bearings, with wheel brake inspection, if there are traces of oil inside of the tire, probably the brake cylinder or brake lines caused by the oil spill, it is timely to identify the reasons, be excluded.
Wheel Bearing Maintenance
Before removing wheels, wheel maintenance should do the preparatory work, the car parked and set up axles, in order to ensure the maintenance of security operations.
(1) Remove the hub shaft head decorative spherical plain bearings cover, dust cover;
(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If disc brakes, the brake should be removed, and then used pliers to remove the lock ring or locking pin.
(3) with a special tool to remove the wheel hub;
(4) scrape bearings, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and wipe dry with a cloth, wipe with a cloth wheels last cavity.
(5) Check the wheel bearings and bearing races, found cracks, fatigue spalling and loose roller bearings and other phenomena, replace bearings. If you find pitting on the bearing race, it should replace the bearings.
When cope with the situation (6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the largest wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Burr is not allowed to play, pitting the journal to narrow the gap.
(7) Upon completion of all parts meet the requirements, the inner bearing grease after release hub.
When (8) grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge self aligning bearings from the other side of the bearing. In the hub and shaft cranial cavity Apply a thin layer of grease to make it play a role in rust. Note that the hub cavity do not apply too much grease, otherwise it will affect the cooling and braking.
(9) the hub and the outer bearing back onto the journal, hand-axis head adjustment nut, and then use the required shaft torque wrench to tighten the adjustment nut. After tightening the nut, turn the wheel a few times to be around to see the bearing installation; on the other hand, by turning the bearing and seat properly fit. At this time bearing tightness appropriate wheels to rotate freely and not feel the axial clearance.
(10) Finally, in order to install the locking plate, fixing nut, tires, dust cover and decorative cover and other parts.
(11) wheel bearings adjusted, with some mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, is caused by the bearing adjustment too tight, should be re-adjusted appropriately relaxed bearing tightness.
Non-normal wheel bearing damage causes
In the repair process, often found that some cars have a greater driving noise, no abnormal tire wear inspection, turn the wheels on the lift no abnormal sound. This phenomenon is often caused by abnormal wheel bearing damage caused by the so-called non-normal means of bearing mobile crane bearing damage caused by the installation of. Automotive wheel bearings are generally double row ball bearing, at the time of installation of the bearing installation if you use a hammer percussion, or when the bearing is installed into the bearing inner race of the bearing by pressing installed, will cause one side of the bearing raceways damage. Noise when the vehicle is traveling, and when the wheelie is better since the raceway side, and therefore noise was heard. Correct installation operation is the key to long life bearings.