Jack for vulnerable part

Abstract

The invention belongs to the technical field of jacks, and particularly relates to a jack for a vulnerable part. The jack comprises a base B, lower support arms, upper support arms, a hinge block A, ascrew rod A, a screw rod B and the like, wherein the two lower support arms distributed symmetrically are hinged with the two upper support arms separately; and the ends, which are not hinged with the corresponding upper support arms, of the two lower support arms are hinged with the base B. According to the jack, the situation that the position of an elastic cushion of a traditional shear jack needs to be regulated repeatedly and consequently fatigue deformation of a vehicle body or equipment occurs due to repeated effects on the vulnerable part which must be supported is avoided effectively; in the regulation process of the elastic cushion, reciprocating lifting of the local part of the vehicle body or the equipment is not required, while the vulnerable part of the vehicle body or the equipment is kept unmoved locally all the time; and the vehicle body or the equipment is prevented from being damaged due to reciprocating lifting of the vulnerable part.

Description

technical field [0001] The invention belongs to the technical field of jacks, in particular to a jack used for wearing parts. Background technique [0002] Scissor jack is a kind of lifting equipment, which is mainly used for jacking up and supporting small-tonnage cars such as cars. Common specifications are 1T, 1.5T, 2T, 3T, etc. The scissor jack is also called the bracket jack. It is light and quick to use, and it is an on-board product of major domestic automobile factories. They consist of upper and lower support arms made of sheet metal, each operating on a different principle. The scissor jack is suitable for mechanical maintenance, especially for car maintenance. It is stable, reliable and has a large carrying capacity. However, if the scissor jack is used to support the vulnerable parts of the car or equipment, it is easy to cause damage to the vulnerable parts of the car or equipment; Place a softer support pad on the contact support plate to avoid the damage o...

AI Technical Summary

Problems solved by technology

However, if the scissor jack is used to support the vulnerable parts of the car or equipment, it is easy to cause damage to the vulnerable parts of the car or equipment; Place a softer support pad on the contact support plate to avoid the damage of the jack to the car body or equipment; this situation is often encountered in the process of placing the support pad, that is, the support pad placed on the jack support plate is in contact with the car or equipment. When the supporting parts interact with each other, deflection or dislocation of the support pad will occur. At this time, it is necessary to shake the screw again to lower the support plate and place the support pad again, and then shake the screw to support the car body or equipment; Proper pad placement, less efficient operation

In addition, the traditional scissor jack is a single-point support for the car body or equipment, and its stability is relatively poor. If the car forgets to pull the handbrake, the movement of the car under the action of external force will easily cause the jack to fall, thereby reducing the operating safety of the jack.

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