I、Lifting machine introduction
Whether the vehicle is to replace the spare tire, or in the repair shop to do maintenance, we will use lifting equipment to lift the car, but the safe and standardized operation of common lifting equipment for each maintenance personnel is not so easy, this unit we will focus on the common lifting equipment specifications.
II、Introduction of jack
Jack is one of the most commonly used, the simplest lifting tools, according to its working principle is divided into two categories of hydraulic and mechanical. According to the quality of jacking can be divided into 3t, 5t, 8t, 10t, 15t, 20t and many different specifications. Both types of jacks have the advantages of small size and light weight. The hydraulic one saves energy, but the working environment has certain requirements. In high temperature, low temperature environment, screw jack has greater superiority, its lifting height should meet the needs of the work. Maintenance is simpler. Currently widely used is the hydraulic jack.
III、mechanical jack explanation
Mechanical jack due to the small lifting capacity, laborious operation, only for general mechanical maintenance work. Mechanical jack commonly used in vertical and bridge type two. Vertical jack, using ratchet to lift the car, due to the more bulky, suitable for use in the workshop, commonly used specifications for 3t and 5t. Bridge jack, using the principle of screw rotation driven rod system deformation to lift the vehicle, its lifting mass is small, but light and convenient, more suitable for car maintenance
IV、vertical and horizontal hydraulic jacks explained
1、Vertical hydraulic jack
Hydraulic jack structure tight beat, smooth work, there is a self-locking effect, so widely used. Its disadvantage is the limited lifting height, slow lifting speed. According to the quality of the jack can be divided into 3t, 5t, 10t, etc. A variety of small with the specifications, the current widely used is the hydraulic jack.
2、Horizontal hydraulic jacks
Horizontal hydraulic jack longer stroke, but its size is larger, not suitable to carry with the car, but more convenient to use is commonly used in automotive repair business equipment.
V、Lifting machine explanation
1、Structure and type
There are mainly two-column type, four-column type, gantry type and other types, generally using electric hydraulic manipulation system drive, with double insurance self-locking protection device, with smooth lifting, safe and reliable, easy to use and other characteristics.
2、Double column lifter
Electric hydraulic type or electric chain traction type, using the switch to manipulate, easy to lift. The column is fixed, suitable for professional maintenance of cars and light vehicles below 3t.
Electric hydraulic type or electric chain traction type, switch manipulation, lifting convenient. Lifting quality up to 8t good stability, can meet the maintenance of large vehicles such as cargo vehicles. The disadvantage is that it occupies a large space and is suitable for the use of comprehensive auto repair shops.
VI、Shear lift explanation
Scissor lift is used for auto repair machinery in the auto repair industry. Depend on the hydraulic system to drive the lift, also called hydraulic lift, in the car repair and maintenance plays a vital role, the whole car overhaul and maintenance, are inseparable from the hydraulic lifter. With the increase in China’s auto sales, lift as an important tool for auto repair, the demand has also increased greatly. For the scissor lift commonly used are ordinary scissor lift and with large shear, small shear scissor lift and so on.
VII、Cautions for using the lift
(1) the total mass of the vehicle can not be greater than the lifting capacity of the lifter.
(2) according to the model and parking position, try to make the center of gravity of the car and the center of gravity of the lifter is close to. Strictly prevent bias, in order to open the door, the car and the column should be left between a certain distance.
(3) turning, telescoping, adjusting the lifting arm to the designated position of the car chassis and contact firmly.
(4) before lifting the car, the operator should check the movement of people around the car to prevent accidents.
(5) car lifting, to leave the car in a lower position on the ground for repeated lifting, no abnormalities before lifting to the required height.
(6) After the car is lifted, it should fall into the groove above the ratchet and be locked immediately.
VIII、The detailed use of the lift steps (scissor lift for example) focus
(1) When lifting
Step 1: confirm that the car is parked reliably and ensure that the vehicle can be lifted in this position.
Step 2: install the wheel block; (preferably both rear wheels are installed)
Step 3: Put the gear in P and put down the handbrake.
Step 4: place the lifting pad (at this point you can lift a little lift to facilitate better placement of lifting pad); attention to the surrounding people to pay attention to safety.
Step 5: lift to the pad contact, again check the pad installation position; attention to please pay attention to the safety of the surrounding people.
Step 6: lift the vehicle to the wheels off the ground, vehicle shaking (solid) check.
Step seven: lift the vehicle to the appropriate position for operation; pay attention to ask people around to pay attention to safety.
Step 8: ensure that the lifter is locked safely and successfully.
Step 9: place the wheel pads in the designated position.
Step 10: maintenance operations can be carried out.
(2) When descending
The first step: according to the type of lift (some lifts can be directly pressed down, some lifts need to rise a little vehicle before they can fall); to carry out the descent, please pay attention to the safety of people around.
Step 2: after descending until the wheels touch the ground, install the wheel block.
Note: Be sure to ensure that the left and right sides of the lift descend at the same time.