Screw lifter snl50t spiral electric hand lifte

  Compared with worm gear screw elevator, SNL screw elevator is mainly characterized by high use efficiency, easy adjustment of reduction ratio, convenient installation and use, small volume, light weight, wide power source, no noise, multiple functions and high reliability
This series of products have self-locking function and can accurately control and adjust the lifting or propulsion height according to the program
Various structural forms, lifting height can be manufactured according to user requirements This elevator makes the base plate rise and fall synchronously through the angle mode, and uses four-point motion series connection, six-point motion series connection and twelve point motion series connection to reduce the height of the base plate and reduce the motion error
At the same time, the plane lifting can directly and quickly achieve the efficiency, save the use space, improve the output and improve the quality stability

 
Screw lifter is also called screw transmission mechanism
It is mainly used to transform rotary motion into linear motion or linear motion into rotary motion
There are mainly to transfer energy (such as screw press, Jack, etc
); There are also mainly transmission movements, such as the feed screw of the machine tool workbench); There are also screw transmission mechanisms for adjusting the relative position of parts
Screw lifter can be divided into sliding friction mechanism and rolling friction mechanism
The sliding lead screw nut mechanism has the advantages of simple structure, convenient processing, low manufacturing cost and self-locking function, but it has large friction resistance torque and low transmission efficiency (30% ~ 40%)
Although the ball screw nut mechanism has complex structure, high manufacturing cost and can not be self-locking, it has the advantages of small friction resistance moment, high transmission efficiency (92% ~ 98%), high precision, good system stiffness, reversible movement and long service life
Therefore, it has been widely used in Mechatronics System
Screw lifter mechanism 1
Working principle there is a ball 2 between the screw 4 and the thread raceway of the nut 1
When the screw or nut rotates, the ball 2 rolls along the thread raceway, and rolling friction occurs when the screw and nut move relative to each other
In order to prevent the ball from rolling out of the raceway, return guide devices 3 are set at both ends of the screw groove of the nut, which form a circulating circuit with the thread raceway, Circulate the ball in the nut raceway
According to the combination of relative movement of lead screw and nut, there are four basic transmission forms of lead screw elevator
(1) The nut is fixed and the lead screw rotates and moves
Because the nut itself plays a supporting role, the transmission form eliminates the additional axial movement that may be generated by the lead screw bearing
The structure is relatively simple and high transmission accuracy can be obtained
However, the axial dimension should not be too long, otherwise the rigidity is poor
Therefore, it is only suitable for occasions with small stroke
(2) The lead screw rotates and the nut moves
This transmission form needs to limit the rotation of the nut, so a guide device is required
It is characterized by compact structure and good rigidity of lead screw
It is suitable for occasions with large working stroke