CN203670575U - Parallel-connection air spring - Google Patents

Abstract

The utility model discloses a parallel-connection air spring which mainly comprises an upper air cavity, a lower air cavity, a floating piston placed between the upper air cavity and the lower air cavity and a parallel-connection air cavity fixing frame. The upper edge of the upper air cavity and the lower edge of the lower air cavity are fixedly connected with the parallel-connection air cavity fixing frame. The lower edge of the upper air cavity and the upper edge of the lower air cavity are fixedly connected with the floating piston. The parallel-connection air cavity fixing frame is connected with a fixing base. The floating piston is connected with a device which needs shock insulation and buffering. Then, the effects of shock insulation and buffering are achieved. The single rigidity of the upper air cavity and the lower air cavity can be changed by variable sections, different sizes, different air inflation pressures and the like, selecting can be carried out according to different rigidness requirements of shock insulation and buffering, and then various variable overall rigidities are obtained.

Description

A kind of pneumatic spring in parallel

Technical field

The utility model belongs to vibration reduction and cushioning technical field, is specifically related to the variable pneumatic spring in parallel of a kind of spring rate.

Background technique

The current spring element for vibration isolation and buffering, majority is helical spring, conventionally its rigidity is constant, although traditional pneumatic spring spring rate can change, but its often when compression rigidity increase gradually, when stretching, rigidity but reduces gradually, so just can not meet the requirement of many suspending apparatus or vibration damping equipment.

Summary of the invention

The utility model, for solving the deficiencies in the prior art, provides one can make suspending apparatus or damping device in the time of compression and stretching, the pneumatic spring in parallel that spring rate can increase gradually.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of pneumatic spring in parallel, mainly formed by upper gas chamber 2, lower air chamber 7, the floating piston 4 and the air cavity fixing frame 10 in parallel that are positioned between the two, wherein, the top edge of upper gas chamber 2, the lower limb of lower air chamber 7 are fixedly connected with air cavity fixing frame 10 in parallel, the lower limb of upper gas chamber 2, the top edge of lower air chamber 7 are fixedly connected with floating piston 4, air cavity fixing frame 10 in parallel is connected with fixed pedestal, floating piston 4 is connected with the device that needs shock insulation and buffering, and then realizes shock insulation of the present utility model and buffer function.

A kind of pneumatic spring in parallel, is made up of upper inflation inlet 1, upper gas chamber 2, cylinder 3, floating piston 4, lower inflation inlet 5, piston rod 6, lower air chamber 7, annular gas seals 8, upper junction plate 901 and lower connecting plate 902; Floating piston 4 is divided into upper gas chamber 2 and 7 two parts of lower air chamber cylinder 3, inflation inlet 1 on the upper end of upper gas chamber 2 has, and there is lower inflation inlet 5 bottom of lower air chamber 7, and piston rod 6 is fixedly connected with floating piston 4, and annular gas seals 8 is enclosed within the outer end of floating piston 4.

Described cylinder 3 is made up of the material of rigidity, and wherein upper gas chamber 2 is made up of floating piston 4, cylinder 3 and upper junction plate 901, and lower air chamber 7 is made up of floating piston 4, cylinder 3 and lower connecting plate 902.

A kind of pneumatic spring in parallel, is made up of upper inflation inlet 1, upper gas chamber 2, upper gasbag 301, lower gasbag 302, lower inflation inlet 5, piston rod 6, lower air chamber 7, upper junction plate 901 and lower connecting plate 902;

Described upper gasbag 301 and lower gasbag 302 are made up of the good rubber material of elasticity, and upper gas chamber 2 is made up of floating piston 4, upper gasbag 301 and upper junction plate 901; Lower air chamber 7 is made up of floating piston 4, lower gasbag 302 and lower connecting plate 902.

Described upper gas chamber 2 and the independent rigidity of lower air chamber 7 can change by variable cross section, different volumes and different inflation pressure etc., can select according to the different-stiffness demand of shock insulation and buffering.For example, in the time that the independent rigidity of upper gas chamber 2 and lower air chamber 7 is identical, when compressing and stretching, integral rigidity of the present utility model is symmetrical changes; In the time that the independent rigidity of upper gas chamber 2 is greater than the independent rigidity of lower air chamber 7, integral rigidity of the present utility model shows as compression stiffness and is greater than tensible rigidity; In the time that the independent rigidity of upper gas chamber 2 is less than the independent rigidity of lower air chamber 7, integral rigidity of the present utility model shows as compression stiffness and is less than tensible rigidity.

The beneficial effects of the utility model are: simple in structure, with low cost, easy for installation, compared to existing technology, independent pneumatic spring has good spring rate performance, be that pneumatic spring in parallel moves at both direction, can produce larger elastic force, and spring rate also increases gradually; By designing the independent rigidity of different upper gas chamber 2 and lower air chamber 7, can obtain multiple different variable integral rigidity.

Accompanying drawing explanation

Fig. 1 is the first embodiment of the present utility model.

Fig. 2 is the second embodiment of the present utility model.

Fig. 3 is the 3rd embodiment of the present utility model.

S-F curve when Fig. 4 (a) is the symmetrical variation of integral rigidity of the present utility model.

S-F curve when Fig. 4 (b) is greater than tensible rigidity for integral rigidity of the present utility model shows as compression stiffness.

S-F curve when Fig. 4 (c) is less than tensible rigidity for integral rigidity of the present utility model shows as compression stiffness.

In figure:

1, upper inflation inlet; 2, upper gas chamber; 3, cylinder; 4, floating piston; 5, lower inflation inlet;

6, piston rod; 7, lower air chamber; 8, annular gas seals; 901, upper junction plate; 902, lower connecting plate;

301, upper gasbag; 302, lower gasbag; 10, air cavity fixing frame in parallel;

S, floating piston displacement; F, ouput force.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further introduced.

As shown in Figure 1, for the first embodiment of the present utility model, shown one pneumatic spring in parallel, mainly by upper gas chamber 2, lower air chamber 7, the floating piston 4 and the air cavity fixing frame 10 in parallel that are positioned between the two form, wherein, the top edge of upper gas chamber 2, the lower limb of lower air chamber 7 is fixedly connected with air cavity fixing frame 10 in parallel, the lower limb of upper gas chamber 2, the top edge of lower air chamber 7 is fixedly connected with floating piston 4, air cavity fixing frame 10 in parallel is connected with the device that needs shock insulation and buffering, floating piston 4 is connected with fixed pedestal, and then realize shock insulation of the present utility model and buffer function.

As shown in Figure 2, for the second embodiment of the present utility model, shown one pneumatic spring in parallel, is made up of upper inflation inlet 1, upper gas chamber 2, cylinder 3, floating piston 4, lower inflation inlet 5, piston rod 6, lower air chamber 7, annular gas seals 8, upper junction plate 901 and lower connecting plate 902; Floating piston 4 is divided into upper gas chamber 2 and 7 two parts of lower air chamber cylinder 3, inflation inlet 1 on the upper end of upper gas chamber 2 has, and there is lower inflation inlet 5 bottom of lower air chamber 7, and piston rod 6 is fixedly connected with floating piston 4, and annular gas seals 8 is enclosed within the outer end of floating piston 4.

Described cylinder 3 is made up of the material of rigidity, and wherein upper gas chamber 2 is made up of floating piston 4, cylinder 3 and upper junction plate 901, and lower air chamber 7 is made up of floating piston 4, cylinder 3 and lower connecting plate 902.

As shown in Figure 3, for the 3rd embodiment of the present utility model, shown one pneumatic spring in parallel, is made up of upper inflation inlet 1, upper gas chamber 2, upper gasbag 301, lower gasbag 302, lower inflation inlet 5, piston rod 6, lower air chamber 7, upper junction plate 901 and lower connecting plate 902;

Described upper gasbag 301 and lower gasbag 302 are made up of the good rubber material of elasticity, and upper gas chamber 2 is made up of floating piston 4, upper gasbag 301 and upper junction plate 901; Lower air chamber 7 is made up of floating piston 4, lower gasbag 302 and lower connecting plate 902.

Described upper gas chamber 2 and the independent rigidity of lower air chamber 7 can change by variable cross section, different volumes and different inflation pressure etc., can select according to the different-stiffness demand of shock insulation and buffering.

In the time that the independent rigidity of upper gas chamber 2 and lower air chamber 7 is identical, when compressing and stretching, integral rigidity of the present utility model is symmetrical changes, as shown in Figure 4 (a);

In the time that the independent rigidity of upper gas chamber 2 is greater than the independent rigidity of lower air chamber 7, integral rigidity of the present utility model shows as compression stiffness and is greater than tensible rigidity, as shown in Figure 4 (b);

In the time that the independent rigidity of upper gas chamber 2 is less than the independent rigidity of lower air chamber 7, integral rigidity of the present utility model shows as compression stiffness and is less than tensible rigidity, as shown in Figure 4 (c).

It should be noted that above-described embodiment is only for illustrating the utility model, wherein structure, the Placement etc. of each parts all can change to some extent, for example, by changing quantity, the arrangement etc. of air cavity, can realize more various load-deflection curve.Every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.

Claims (4)

1. a pneumatic spring in parallel, by upper gas chamber (2), lower air chamber (7), be positioned at floating piston (4) between the two and air cavity fixing frame in parallel (10) forms, is characterized in that:

The top edge of described upper gas chamber (2), the lower limb of lower air chamber (7) are fixedly connected with air cavity fixing frame in parallel (10), the lower limb of upper gas chamber (2), the top edge of lower air chamber (7) are fixedly connected with floating piston (4), air cavity fixing frame in parallel (10) is connected with fixed pedestal, and floating piston (4) is connected with the device that needs shock insulation and buffering;

Described upper gas chamber (2) and the independent rigidity of lower air chamber (7) change by variable cross section, different volumes and different inflation pressure.

2. a pneumatic spring in parallel, is made up of upper inflation inlet (1), upper gas chamber (2), cylinder (3), floating piston (4), lower inflation inlet (5), piston rod (6), lower air chamber (7), annular gas seals (8), upper junction plate (901) and lower connecting plate (902); It is characterized in that:

Described floating piston (4) is divided into upper gas chamber (2) and (7) two parts of lower air chamber cylinder (3), there is upper inflation inlet (1) in the upper end of upper gas chamber (2), there is lower inflation inlet (5) bottom of lower air chamber (7), piston rod (6) is fixedly connected with floating piston (4), and annular gas seals (8) is enclosed within the outer end of floating piston (4);

Described upper gas chamber (2) and the independent rigidity of lower air chamber (7) change by variable cross section, different volumes and different inflation pressure.

3. one according to claim 2 pneumatic spring in parallel, is characterized in that:

Described cylinder (3) is made up of the material of rigidity, and wherein upper gas chamber (2) is made up of floating piston (4), cylinder (3) and upper junction plate (901), and lower air chamber (7) is made up of floating piston (4), cylinder (3) and lower connecting plate (902).

4. a pneumatic spring in parallel, is made up of upper inflation inlet (1), upper gas chamber (2), upper gasbag (301), lower gasbag (302), lower inflation inlet (5), piston rod (6), lower air chamber (7), upper junction plate (901) and lower connecting plate (902); It is characterized in that:

Described upper gasbag (301) and lower gasbag (302) are made up of elastic material, and upper gas chamber (2) is made up of floating piston (4), upper gasbag (301) and upper junction plate (901); Lower air chamber (7) is made up of floating piston (4), lower gasbag (302) and lower connecting plate (902);

Described upper gas chamber (2) and the independent rigidity of lower air chamber (7) change by variable cross section, different volumes and different inflation pressure.

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