To replace the tires, the necessary jack is an important accessory to carry with the car, but in reality, many drivers don’t know how to use the jack at all, let alone using the jack in the wrong place will cause great damage to the vehicle . Today, the editor will teach you some how to use jacks to protect our car from damage.We can see the products of hydraulic jack manufacturers in china.
In a balanced system, the pressure exerted on the smaller piston is smaller, and the pressure exerted on the larger piston is also larger, so that the liquid can be kept still. Therefore, through the transfer of liquid, different pressures on different ends can be obtained, so that a transformation can be achieved.
The mechanical jack pulls the handle back and forth, pulling the pawl pushes the ratchet gap to rotate, and the small bevel gear drives the large bevel gear to rotate the lifting screw, so that the lifting sleeve can be raised or lowered to achieve the function of lifting tension.
The mechanical jack adopts the mechanical principle. The handle is pulled back and forth, and the pawl is pulled to push the ratchet gap to rotate. The small bevel gear drives the big bevel gear and rotates the lifting screw, so that the lifting sleeve can be raised or lowered to achieve the lifting force. Features. But it is not as simple as a hydraulic jack.
This kind of mechanical jack is relatively small and is often used in daily life. It is certainly not as powerful as hydraulic jacks. In fact, we often see a mechanical jack of hydraulic jack manufacturers in china in our lives, we call it a scissor jack.
It is to reciprocate the handle to move the top up and down, which is easy to understand.
Rack jacks are the more common jacks equipped with household cars, because they have the advantages of small size and easy storage. However, due to the limited weight supported, it is usually equipped with a family car with a weight of about 1 ton.
The screw jack manufacturers in china will generally equip jacks according to the weight of the vehicle purchased. Generally, the jacks equipped with cars can bear a load of less than 1.5 tons, while the self-weight of SUVs and sports cars is relatively large, and the jacks equipped with them can usually bear about 2.5 tons.
Therefore, do not borrow other people's jacks at will to avoid potential safety hazards.
If the vehicle is not completely fixed before supporting the vehicle, it is likely that the vehicle will slip and fall off during the support process. Once the car slips from the jack, the damage to the tools is considered minor, and it will be terrible if the maintenance personnel under the car are injured.
To use the jack correctly, you need to stop the car, pull up the hand brake, put the manual gear into 1st gear or reverse gear, and put the automatic gear into P gear. After that, the jack must be used on a hard and level road.
Many of my friends have never used or personally replaced the spare tire, nor have they read carefully the introduction of the jack usage and support points in the vehicle manual.
The hydraulic jack manufacturers in china will specify it in the manual.
There are dedicated support points for jacks on the bottom of the vehicle body. The support points for family cars are usually on the inside of the side skirts, like two fins on both sides of the chassis, about 20 cm behind the front wheels and about 20 cm in front of the rear wheels.
This fin protrudes from the chassis steel plate and can withstand relatively large pressure. If the jack is supported on the chassis steel plate, it is likely to cause unnecessary damage to the chassis.
When you use the jack on weekdays, you should pay more attention to the split structure of the jack rocker arm, which needs to be connected with the matching wrench and sleeve to rotate. In the process of lifting the jack, the force must be even, and never too fast or too strong. The jack also has a big temper, so you can't turn your ears off.