Changchun LG washing machine repair: shock absorption device
Release time: 2018-06-01
1. Damping equipment for double-tub washing machine
For the washing of double-tub washing machines, the method of installing vibration isolation pads under the electric motor is used to reduce vibration and noise, and the damping of some dehydration uses spring and rubber to form shock-absorbing equipment connected to the base. During dehydration, the center of gravity of the inserted fabric can not be on the axis line. Even if the center of gravity is occasionally placed on the axis line, some of them will not be symmetrically distributed, so intense shaking occurs during dehydration. In order to reduce the deflection and deflection of the dehydration, three shock-absorbing spring bearings and rubber capsules are set in the water to form a shock-absorbing device. The former is installed between the dehydration motor and the base of the washing machine, and consists of dead and lower feet, springs, and rubber sleeves. The latter is made of neoprene with excellent oil resistance. It is installed in the round hole at the bottom of the dewatering outer barrel. It not only acts as a buffer and shock absorber, but also supports the coupling to rotate. A water seal was installed above the rubber bladder. In order to ensure that the water in the dehydration outer barrel will not leak down the coupling during the operation.
2. Damping equipment for bucket soil active washing machine
The full-automatic washing machine with a set of buckets, the dehydration bucket and the water bucket composite equipment together, are supported by the chassis. Wuhan LG washing machine repairs, because of high centrifugal force when rotating at high speed, cause oscillations. Therefore, a special hanging support structure is selected to hang in the washing machine cabinet to ensure smooth operation during dehydration [see Figure 1-24 (built)]. Four shock-absorbing booms are fixed in the slot in the upper part of the box with cylindrical pins, and a set of shock-absorbing parts is provided on the boom (Figure 1-26). The lengths of the four suspension rods are the same; the lengths of the damping springs are the same, the two on the front of the box are slightly longer, and the two on the rear are slightly shorter.
When the whole system of the washing machine oscillates up and down, the rubber anti-vibration pad of the soft support elastic boom is tightened up and down to dampen it; when the whole system of the washing machine oscillates laterally, the circumference of the soft support elastic suspender swings freely to restrain it, avoiding The collision between the scrub bucket and the cabinet.
In order to avoid the severe oscillation that occurs when the dehydration bucket just starts or finishes, a simple damping sleeve is set on the elastic boom. The following analyzes the shock absorption process of the damping sleeve from the perspective of the force.
The damping sleeve is set on the spring of the elastic boom, and is linked with the inner diameter of the spring as the positioning. The force of the damping sleeve is shown. When the dehydration bucket just starts or finishes entering the resonance area, the force P of the dehydration pump together with the scrub bucket to the shock absorbing equipment is large. Especially before the dehydration is completed, the centrifugal component of the dehydration bucket gradually decreases, and the dehydration bucket together with the scrub bucket gives the force of the elastic boom. Gradually increase. With the increase of the dead body, the axial component force P7 and the radial component force P 'on the damping sleeve also increase, and the increase of the sleeve component Py is transmitted to the spring through the damping sleeve, which will cause the upper and lower vibrations. . But together with the avoidance of the increase, the damping sleeve is also subject to an increase in the radial force. The increase of the dead body will inevitably lead to an increase in the field between the damping sleeve and the boom, and then "hang" the boom. It can be seen that the dehydration bucket and the scrub bucket give the elastic boom a large amount of force on the boom, and only a very small amount acts on the spring, which acts as a buffer and absorbs vibration. That is to support the suspension rod and shock-absorbing spring, in addition to lifting the role of technology. It also plays a role of shock absorption and vibration absorption.
In order to further reduce the shaking of the dehydration bucket, a hollow balance ring is manufactured on the top of the dehydration bucket, which contains some brine. When the dehydration bucket oscillates due to imbalance, this liquid acts as a balance to reduce mechanical oscillations.