Find the mechanical basis principle of the lifting mechanism of the scissor lift 30

Characteristics and working principle of hydraulic lift.

The elevator is a kind of elevator equipment composed of a walking mechanism, a hydraulic mechanism, an electric control mechanism and a support mechanism. The hydraulic oil forms a certain pressure by the vane pump, and enters the lower end of the hydraulic cylinder through the oil filter, flameproof electromagnetic reversing valve, throttle valve, hydraulic control check valve, and balance valve, so that the piston of the hydraulic cylinder moves upwards and lifts the heavy object, and the oil return at the upper end of the hydraulic cylinder returns to the oil tank through the explosion-proof electromagnetic reversing valve, and its rated pressure is adjusted through the relief valve, and the pressure gauge reading value is observed through the pressure gauge.

First, the principle. Hydraulic lifting platform products are divided into curved arm hydraulic lift, scissor hydraulic lift, mast hydraulic lift, and straight arm hydraulic lift according to the working mode. Hydraulic lift is a replacement product of knuckle arm lift (lifting platform) and scissor lift (lifting platform).

It can be widely used in stations, docks, airports, hotels, post and telecommunications, municipal gardens, grain depots, cleaning companies, decoration and decoration of public building facades or installation and maintenance of power systems. This elevator has the advantages of light weight, self-walking, electric start, self-supporting legs, simple operation, large working surface, especially the ability to cross obstacles for high-altitude work.

1. The hydraulic lifting platform can be divided into: four-wheel mobile type, two-wheel traction type, car modification type, battery car type, auxiliary self-propelled type, and the lifting height ranges from 4 meters to 18 meters. The load of this series of products is divided into tons, and can also be customized according to user requirements, with a maximum load of up to 10 tons.

2. The hydraulic lifting platform is widely used in the maintenance of industrial and mining enterprises, municipal construction, and the decoration of hotels and hotels, with reliable quality and perfect performance.

3. Users can choose the power mode and configuration according to their own scope of use

The power system includes: battery DC power supply, single-phase or three-phase power supply, diesel engine.

Walking: assisted self-propelled, two-wheel towed, self-driving, and car modification.

Outriggers: mechanical outriggers, hydraulic outriggers, ordinary hand-cranked outriggers, pull-out outriggers.

Control system: explosion-proof electronic control system, remote control control system, PIC control system.

Hydraulic pumping station: special pumping station for domestic lifting platform, pumping station imported from Italy.

External protection device: organ cover type, mesh type, iron plate sealed type.

3. Use. Hydraulic lifts are widely used in automobiles, containers, mold manufacturing, wood processing, chemical filling and other industrial enterprises and production lines to meet the lifting needs of different operating heights, and can be equipped with various table forms (such as balls, rollers, turntables, steering, tilting, telescoping), with various control methods (transfer, linkage, explosion-proof), with the characteristics of stable and accurate lifting, frequent start-up, large load capacity, etc., effectively solve the difficulties of various lifting operations in industrial enterprises, and make production operations easy.

The hydraulic lifting platform is mainly through the pressure transmission of hydraulic oil to achieve the function of lifting, its scissor mechanical structure, so that the lift lifting has higher stability, wide working platform and higher bearing capacity, so that the range of aerial work is larger, and suitable for multiple people to work at the same time. It makes working at height more efficient and safer.

The parallelogram is easily deformed.

Working principle: The piston of the cylinder moves downward (i.e. the weight is lowered). The hydraulic oil enters the upper end of the hydraulic cylinder through the explosion-proof electromagnetic reversing valve, and the oil return at the lower end of the hydraulic cylinder returns to the oil tank through the balance valve, the hydraulic check valve, the throttle valve, and the explosion-proof electromagnetic reversing valve.

In order to make the heavy object descend smoothly and brake safely and reliably, a balance valve is set on the oil return road to balance the circuit and maintain the pressure, so that the descending speed is not changed by the heavy object, and the flow is adjusted by the throttle valve to control the lifting speed.

In order to make the braking safe and reliable and prevent accidents, a hydraulic check valve, that is, a hydraulic lock, is added to ensure that the hydraulic pipeline can be safely self-locked when it bursts accidentally. An overload sound activated alarm is installed to distinguish between overload and equipment failure.

Advantages and disadvantages: The scissor lift has the advantages of compact structure, stable operation, low noise, fast frequency response, large transmission power, and easy operation. The hydraulic station composed of electric motors, hydraulic pumps, oil tanks, etc., has high noise when used, but can be installed away from the main engine and treated separately for sound insulation and noise reduction.

Due to the influence of a variety of hydraulic control valves, complex oil circuit system, difficult to install and clean pipelines, high requirements for the quality of hydraulic oil medium, and easy oil leakage of oil circuit system (due to the use of cheap hydraulic components and lack of maintenance, oil stains are everywhere near the common hydraulic station) and high manufacturing costs, the scope of application of hydraulic scissor lift in the theater is limited to a certain extent.

The main advantages of scissor construction are:

It can be easily folded and takes up less space;

The folding structure is stable in lifting, and it is relatively stable in the lifting process;

The scissors have a sturdy structure, small gaps, and wobble during the ascent.

The main advantages are these.

What material is his lifting scissors?

Scissor lifts are a wide range of special equipment for aerial work. Its scissor mechanical structure makes the lifting platform have high stability, wide working platform and high bearing capacity, so that the range of aerial work is larger, and it is suitable for multiple people to work at the same time. It makes working at height more efficient and safer.