Gas spring is a kind of industrial accessory that can play the functions of support, buffer, brake, height adjustment and angle adjustment. It consists of the following parts: pressure cylinder, piston rod, piston, sealing guide sleeve, filler (inert gas or oil and gas mixtures), cylinder control elements and cylinder control elements (refers to the controllable gas spring) and connectors. The principle is in a closed pressure cylinder filled with inert gas or oil and gas mixture, so that the pressure in the cavity is higher than the atmospheric pressure of a few times or dozens of times, the use of the piston rod cross-sectional area is smaller than the cross-sectional area of the piston and thus the resulting pressure difference to achieve the movement of the piston rod. Because of the fundamental difference in principle, gas springs have significant advantages over ordinary springs: relatively slow, dynamic force changes (generally within 1:1.2), easy to control; the disadvantage is that the relative volume is not as small as the coil spring, high cost, relatively short life.
Ordinary gas springs
Ordinary gas springs are commonly known as support rods, compression gas springs, the original state of the extension state, used in various industries, play a role in supporting, booster.
Extension gas springs
Extension gas springs are commonly known as tension springs, also known as traction gas springs, the original state of compression, the medical industry is the most common application, play a role in traction and stretch. Tension gas springs are long and short due to different internal structures. Depending on the size of the customer's installation, the long relative to the short, stretch, contraction curve is flatter, F1 rate of change is smaller.
Controllable gas springs, also known as lockable gas springs, angle-adjustable gas springs, through the opening and closing of the valve to control the stroke, so that the stroke can be parked in any position, mostly used for tables, beds, tables, chairs, baking lamps, and other Angle, height needs to be adjusted. According to the locking force distinction, can be divided into elastic locking and rigid locking, rigid locking according to the different locking direction, can be divided into compression to locking and tension to locking.
Controllable gas springs
Controllable gas springs, also known as lockable gas springs, angle-adjustable gas springs, through the opening and closing of the valve to control the stroke, so that the stroke can be parked in an arbitrary position, used for tables, beds, tables, chairs, chairs, baking lamps, and other Angle, the height of the need to adjust the place. According to the locking force distinction, can be divided into elastic locking and rigid locking, rigid locking according to the different locking direction, can be divided into compression to locking and tension to locking. 3, the curve
Stop at will gas spring
Stop at will gas spring, also known as the balance of gas springs or friction gas spring, the product does not need an external control mechanism when the load, the stroke can be stopped at an arbitrary position, mostly used for Medical and cabinet, video equipment, etc.
Damping gas springs
Damping gas springs are commonly known as dampers, damping, shock absorption, noise reduction, more for machine tools, hospital bed rails, doors and so on. According to the internal structure can be divided into ordinary damper and two-way damper, ordinary damper and two-way damper, compared with the disadvantage is that when the piston rod will be fully extended there will be a certain amount of undamped section, two-way damper is the whole process of damping, the advantages of the ordinary damper is a compact structure, the size of the short. The damping size of both types of dampers can be adjusted by the flow of damping oil and the viscosity of the damping oil.
With protection gas spring
With protection gas spring is in the ordinary gas spring piston rod end of the protection mechanism, in the full extension, the use of mechanical locking mechanism, to prevent the sudden failure of the gas spring in the event of an accident, mostly used in fitness equipment and troop facilities.
What are the classifications of gas springs?
One, free-type gas spring (support rod) is the most widely used gas spring. It mainly plays a supporting role, only the shortest, longest two positions, in the stroke can not stop by itself. In the automobile, textile machinery, printing equipment, office equipment, construction machinery and other industries are most widely used.
Two, self-locking gas spring (adjuster) in the medical equipment used in the most. This kind of gas spring with the help of some release mechanism can stop at any position in the stroke, and stop after a great locking force (can reach more than 10000N). Third, stop at will gas spring (friction gas spring, balanced gas spring) is mainly used in kitchen furniture, medical equipment and other fields. Its characteristics between the free type gas spring and self-locking type gas spring: without any external structure and can stop at any position in the stroke, but no additional locking force.
Four, swivel chair gas spring (gas pressure rod) is mainly used in swivel chairs, the role of adjusting the position. It is characterized by controllable, the demand is relatively large.
Fifth, traction gas spring is a special gas spring: other gas springs in the free state are in the longest position, that is, after being subjected to external forces from the longest position to the shortest position of the movement, while the free state of the traction gas spring is in the shortest position, by the traction of the shortest position to the longest run. Traction gas spring also has a corresponding free type, self-locking type.
Sixth, the damper in the car and medical equipment are used more, which is characterized by resistance to change with the speed of running. Can be obvious to the speed of the connected institutions to play a cushioning effect.
In addition, from the material points there are ordinary steel gas spring and stainless steel gas spring. Ordinary steel gas spring with the largest amount of stainless steel gas spring is used in places with harsh environmental requirements, such as food machinery, medical equipment, the military industry, high temperature or high temperature environment, acidic or alkaline environment.
Based on their characteristics and different areas of application, gas springs are also known as support rods, adjusters, pneumatic rods, dampers and so on. Classified according to their structure and function, gas springs are free-type gas springs, self-locking gas springs, traction gas springs, stop-at-will gas springs, swivel-chair gas springs, gas pressure rods, dampers and several other types of gas springs. At present, the product has a wide range of applications in automotive, aviation, medical equipment, furniture, machinery manufacturing and other fields.