CN205533955U - Tonifying qi formula air spring - Google Patents

Abstract

The utility model relates to an air spring technical field especially relates to a tonifying qi formula air spring, including cylinder and piston assembly, piston assembly includes piston and piston rod, and the one end at the piston rod is fixed to the piston, and inside the one end of piston rod stretched into in the cylinder and the piston is located the cylinder, the cylinder was bilayer structure inlayer and skin, piston are arranged in the inlayer, form the tonifying qi cavity between inlayer and the skin, are provided with the air inlet on the skin, install the air inlet sealing member on the air inlet, have still seted up the tonifying qi mouth on the inlayer, and the tonifying qi mouth communicates the no pole chamber of tonifying qi cavity and cylinder, and tonifying qi formula air spring still includes tonifying qi mouth sealing member. The utility model discloses a tonifying qi formula air spring through designing into bilayer structure with the cylinder, has increased the tonifying qi cavity, can be when the gas of no pole intracavity be revealed on a small quantity, and timely make -up gas, the normal use of air spring is guaranteed to the pressure of reinforcing air spring to the life of air spring has been improved.

Description

Gas compensating type air spring

Technical field

This utility model relates to gas spring technology field, particularly relates to a kind of gas compensating type air spring.

Background technology

Air spring, is a kind of using gas and liquid as the flexible member of working media, mainly by cylinder barrel, cylinder Piston in Tong and the composition such as piston rod and fairlead.In cylinder barrel, storage has gas and part fluid, due to work Plug occupies the volume in cylinder barrel, and during work in piston rod press-in cylinder barrel, piston makees axially-movable in cylinder barrel Fluid in extrusion chamber, and fluid compressed gas makes piston reach operating position.When loading on the piston rod External force disappear after, then gas restore and expand, the gas push fluid of expansion makes piston reset, by piston Bar removes, and makes air spring realize compression motion and restore damped motion.

Air spring has significant advantage than common spring: speed is relatively slow, dynamic force change little ( As within 1:1.2), be easily controlled.Shortcoming is that relative volume does not has helical spring little, and cost is high, the longevity Order relatively short.Wherein expanding gas is the most easily revealed, and affects the life-span of air spring.

Utility model content

The technical problems to be solved in the utility model is: for the expanding gas solved in prior art in cylinder barrel The technical problem easily revealed, a kind of gas compensating type air spring, it is possible to mend in the case of air spring micro-leakage Foot gas.

This utility model solves its technical problem and be the technical scheme is that a kind of gas compensating type air spring, bag Including cylinder barrel and piston component, described piston component includes piston and piston rod, and piston is fixed on the one of piston rod End, one end of piston rod is stretched in cylinder barrel and piston is positioned at inside cylinder barrel, and described cylinder barrel is double-decker, bag Including internal layer and outer layer, piston is positioned in internal layer, forms QI invigorating chamber, outer layer is arranged between internal layer and outer layer There is air inlet, air inlet is provided with air inlet sealing member, described internal layer is further opened with gas supplementing opening, described Gas supplementing opening connection QI invigorating chamber and the rodless cavity of cylinder barrel, described gas compensating type air spring also includes gas supplementing opening sealing member, The cross section of described gas supplementing opening sealing member is I shape, including the upper ring washer of integrative-structure, columnar supports and Lower ring washer, upper ring washer and lower ring washer lay respectively at the two ends of columnar supports, outside upper ring washer is connected to In layer, columnar supports is positioned at the outside diameter d 1 of QI invigorating chamber and columnar supports and is slightly less than the internal diameter of gas supplementing opening, post The height h of shape pole is slightly less than inwall distance d2 to the inwall of internal layer of outer layer, and the external diameter of lower ring washer is big Internal diameter in gas supplementing opening.Gas in the QI invigorating chamber of this utility model gas compensating type air spring can only be to rodless cavity Interior inflow, and owing to the external diameter of lower ring washer is more than the internal diameter of gas supplementing opening, lower ring washer can hide gas supplementing opening, Therefore, in the gas in rodless cavity cannot be introduced into QI invigorating chamber.

Owing to the columnar supports of gas supplementing opening sealing member needs have certain elasticity, in just making QI invigorating chamber Having pressure ring washer at present to open gas supplementing opening, described gas supplementing opening sealing member is elastic sealing element.

In order to improve sealing effectiveness further, prevent the gas in rodless cavity from letting out in QI invigorating chamber from gas supplementing opening Dew, the outer ring of described lower ring washer is the circular arc of indent.

The beneficial effects of the utility model are, gas compensating type air spring of the present utility model, by being designed by cylinder barrel Become double-decker, add QI invigorating chamber, can supplement in time when the gas in rodless cavity is revealed on a small quantity Gas, strengthens the pressure of air spring, it is ensured that the normal use of air spring, thus improves the use of air spring Life-span.

Accompanying drawing explanation

With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation under this utility model gas compensating type air spring non-QI invigorating state.

Fig. 2 is the structural representation under this utility model gas compensating type air spring QI invigorating state.

Fig. 3 is enlarged diagram at the A in Fig. 2.

Fig. 4 is the sectional view of gas supplementing opening sealing member.

In figure: 1, cylinder barrel, 11, internal layer, 12, outer layer, 13, QI invigorating chamber, 14, rodless cavity, 2, Piston, 3, piston rod, 4, air inlet sealing member, 5, gas supplementing opening, 6, gas supplementing opening sealing member, 61, on Ring washer, 62, columnar supports, 63, lower ring washer.

Detailed description of the invention

Presently in connection with accompanying drawing, this utility model is described in further detail.These accompanying drawings are showing of simplification Being intended to, basic structure of the present utility model is described the most in a schematic way, therefore it only shows and this utility model Relevant composition.

As Figure 1-4, being this utility model optimum embodiment, a kind of gas compensating type air spring, including cylinder barrel 1 And piston component, piston component includes piston 2 and piston rod 3, and piston 2 is fixed on one end of piston rod 3, In cylinder barrel 1 is stretched in one end of piston rod 3 and piston 2 to be positioned at cylinder barrel 1 internal, cylinder barrel 1 is double-decker, Including internal layer 11 and outer layer 12, piston 2 is positioned in internal layer 11, is formed and mend between internal layer 11 and outer layer 12 Gas chamber 13, outer layer 12 is provided with air inlet, and air inlet is provided with air inlet sealing member 4, internal layer 11 On be further opened with gas supplementing opening 5, gas supplementing opening 5 connects the rodless cavity 14 of QI invigorating chamber 13 and cylinder barrel 1, gas compensating type Air spring also includes gas supplementing opening sealing member 6, and as shown in Figure 4, the cross section of gas supplementing opening sealing member 6 is I shape, Including upper ring washer 61, columnar supports 62 and the lower ring washer 63 of integrative-structure, upper ring washer 61 and under Ring washer 63 lays respectively at the two ends of columnar supports 62, and the clamping of upper ring washer 61 is also fixed in outer layer 12, Columnar supports 62 is positioned at the outside diameter d 1 of QI invigorating chamber 13 and columnar supports 62 and is slightly less than gas supplementing opening 5 Footpath, in order to make the gas in QI invigorating chamber 13 enter in rodless cavity 14, the height of columnar supports 62 H is slightly less than inwall distance d2 to the inwall of internal layer 11 of outer layer 12, and the external diameter of lower ring washer 63 is more than mending The internal diameter of QI KOU 5.Gas supplementing opening sealing member 6 is elastic sealing element.The outer ring of lower ring washer 63 is the circle of indent Arc.

As it is shown in figure 1, when the gas in rodless cavity 14 can normally work, due to columnar supports 62 Highly h is slightly less than inwall distance d2 to the inwall of internal layer 11 of outer layer 12, and columnar supports 62 can be held Lower ring washer 63, keeps the sealing between rodless cavity 14 and QI invigorating chamber 13.As in figure 2 it is shown, when without bar When gas trace in chamber 14 is revealed, can be by inflating to air inlet, the gas in QI invigorating chamber 13 enters Entering in the gap between columnar supports 62 and gas supplementing opening 5, under compressing, ring washer 63 is away from the inwall of internal layer 11, Gas is made to enter in rodless cavity 14, it is ensured that the gas in rodless cavity 14 is sufficient, meets the work of air spring Condition.

With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant Staff can carry out various change completely in the range of without departing from this utility model technological thought And amendment.The content that the technical scope of this utility model is not limited in description, it is necessary to root Its technical scope is determined according to right.

Claims (3)

1. a gas compensating type air spring, including cylinder barrel (1) and piston component, described piston component includes living Plug (2) and piston rod (3), piston (2) is fixed on one end of piston rod (3), piston rod (3) One end is stretched in cylinder barrel (1) and piston (2) to be positioned at cylinder barrel (1) internal, it is characterised in that: described cylinder barrel (1) being double-decker, including internal layer (11) and outer layer (12), piston (2) is positioned in internal layer (11), Forming QI invigorating chamber (13) between internal layer (11) and outer layer (12), outer layer is provided with air inlet on (12), Air inlet sealing member (4) is installed on air inlet, described internal layer (11) is further opened with gas supplementing opening (5), Described gas supplementing opening (5) connection QI invigorating chamber (13) and the rodless cavity (14) of cylinder barrel (1), described gas compensating type Air spring also includes gas supplementing opening sealing member (6), and the cross section of described gas supplementing opening sealing member (6) is I shape, bag Include the upper ring washer (61) of integrative-structure, columnar supports (62) and lower ring washer (63), upper ring washer (61) and lower ring washer (63) lays respectively at the two ends of columnar supports (62), upper ring washer (61) blocks Being connected in outer layer (12), columnar supports (62) is positioned at QI invigorating chamber (13) and columnar supports (62) Outside diameter d 1 be slightly less than the internal diameter of gas supplementing opening (5), the height h of columnar supports (62) is slightly less than outer layer (12) Inwall be more than gas supplementing opening (5) to distance d2 of the inwall of internal layer (11), the external diameter of lower ring washer (63) Internal diameter.

2. gas compensating type air spring as claimed in claim 1, it is characterised in that: described gas supplementing opening sealing member (6) For elastic sealing element.

3. gas compensating type air spring as claimed in claim 1, it is characterised in that: described lower ring washer (63) Outer ring be the circular arc of indent.