CN105257760A - Gas spring device - Google Patents
Gas spring device Download PDFInfo
- Publication number
- CN105257760A CN105257760A CN201510722547.7A CN201510722547A CN105257760A CN 105257760 A CN105257760 A CN 105257760A CN 201510722547 A CN201510722547 A CN 201510722547A CN 105257760 A CN105257760 A CN 105257760A
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- China
- Prior art keywords
- piston rod
- dust removal
- removal piece
- pressure cylinder
- piston
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a gas spring device which comprises a pressure cylinder, a piston rod, a piston and a sealing guide sleeve. The piston is connected into the pressure cylinder in a sealed manner. One end of the piston rod is connected with the piston. The sealing guide sleeve is connected into one end of the pressure cylinder. The piston rod penetrates the sealing guide sleeve. The gas spring device further comprises a dust removal structure. The dust removal structure comprises an installation seat and at least two dust removal pieces detachably connected to the installation seat. The installation seat is connected to the end face of the end, extending out of the pressure cylinder, of the piston rod. A dust removal hole where the piston rod penetrates is formed by the dust removal pieces and attached to the outer surface of the piston rod. By the adoption of the scheme, dust can be prevented from entering the position between the piston rod and the sealing guide sleeve.
Description
Technical field
The present invention relates to one and comprise on-fluid type spring and vibration damper, be specifically related to a kind of gas spring device.
Background technique
Air spring (gasspring) is a kind of industry accessories that can play support, buffering, braking, the highly function such as adjustment and angle adjustment.It is made up of following a few part: pressure cylinder, piston rod, piston, seal guide sleeve, packing (inert gas or gas mixture), control unit and cylinder outer control unit (referring to controllable gas spring) and joint etc. in cylinder.Principle is filled with inert gas or gas mixture in airtight pressure cylinder, make the pressure in cavity higher than atmospheric several times or tens times, utilize the cross-section area of piston rod be less than piston cross-section area thus produce pressure difference to realize the motion of piston rod.Due to the fundamental difference in principle, air spring has very significant advantage than common spring: speed relatively slowly, dynamic force change little (generally within 1:1.2), easily to control.
Air spring in existing use, its piston rod one end is inserted in pressure cylinder, the other end is outside exposed, there is following shortcoming in such structure: exposed piston rod can not be protected, have in the production environment of more dust at some, exposed piston rod is very easy to long-pending full dust, and surface be stained with the piston rod of dust can frequent and seal guide sleeve friction, owing to there being the existence of dust, friction factor in friction process is large, piston rod and seal guide sleeve is easily caused to damage, so need often to check and keep in repair, during maintenance, carry out after also pressure cylinder will being dismantled, maintenance bothers very much, and decrease the working life of air spring.
Summary of the invention
A kind of dust of avoiding is the object of the present invention is to provide to enter gas spring device between piston rod and seal guide sleeve.
For achieving the above object, base case of the present invention is as follows:
Gas spring device, comprise pressure cylinder, piston rod, piston and seal guide sleeve, described piston seal is connected in pressure cylinder, described piston rod one end is connected with piston, described seal guide sleeve is connected to the inside of pressure cylinder one end, described piston rod runs through seal guide sleeve, also comprise dedusting structure, this dedusting structure comprises fitting seat and at least two dust removal piece be detachably connected on fitting seat, described fitting seat is connected to pressure cylinder and stretches out on the end face of piston rod one end, multiple dust removal piece forms the dedusting hole passed for piston rod, this dedusting hole and piston rod outer surface are fitted.
The principle of this programme: before use, multiple dust removal piece is arranged on fitting seat, because multiple dust removal piece forms the dedusting hole passed for piston rod, this dedusting hole and piston rod outer surface are fitted, so after piston rod stretches out from pressure cylinder, dust is attached to piston rod surface, when piston rod retraction pressure cylinder, piston rod is first through dedusting hole, now, dust removal piece can by piston rod surface adhere to dust scrape substantially completely, piston rod retraction pressure cylinder time, surface has not had dust to adhere to, thus avoids dust to enter between piston rod and seal guide sleeve.In addition, after dust removal piece is worn, only dust removal piece need be dismantled, the dust removal piece then more renewed, compared with dismantling pressure cylinder with background technique, obviously simpler, convenient.
Optimized project 1, to the further optimization of base case, described dust removal piece arranges two, and each dust removal piece is connected by screw on fitting seat, and dust removal piece is provided with semicircular opening slot.Two dust removal piece are set, and when being connected by screw, do not need dismounting piston rod just can install or dismantle dust removal piece.
Optimized project 2, to the further optimization of base case, the one side of described dedusting hole and plunger rod contacts is provided with polyurethane elastomer layer.Polyurethane elastomer is wear-resisting, and possesses good elasticity and pliability, in using process, polyurethane elastomer layer and piston rod surface are fitted, and the dust being attached to piston rod surface can be scraped, polyurethane elastomer wear-resisting property is good, so can use the longer time.
Optimized project 3, to the further optimization of base case or optimized project 2, described dust removal piece arranges two, and described fitting seat is provided with two draw-in grooves in L-type, two dust removal piece is equipped with the flange coordinating and insert draw-in groove.When installing dust removal piece, first by two dust removal piece splits, then the flange in two dust removal piece being aligned with two draw-in grooves respectively, after insertion, rotating dust removal piece, can dust removal piece be stuck in fitting seat, by the more convenient installation and removal of the mode of this clamping.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas spring device embodiment of the present invention;
Fig. 2 is the enlarged view at A place in Fig. 1;
Fig. 3 is the structural representation of gas spring device embodiment of the present invention;
Fig. 4 is the enlarged view at B place in Fig. 3.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: pneumatic cylinder 10, piston 20, piston rod 30, seal guide sleeve 40, dedusting structure 50, fitting seat 51, dust removal piece 52, polyurethane elastomer layer 53, L-type draw-in groove 511, flange 521.
Embodiment 1
Embodiment is substantially as shown in figure 1 and 2: a kind of gas spring device, comprise pressure cylinder, piston rod, piston and seal guide sleeve, piston seal is connected in pressure cylinder, piston rod one end is connected with piston, seal guide sleeve is connected to the inside of pressure cylinder one end, piston rod runs through seal guide sleeve, the present embodiment also comprises dedusting structure, this dedusting structure comprises fitting seat and two dust removal piece be connected on fitting seat, fitting seat is connected by screw on the end face that pressure cylinder stretches out piston rod one end, two dust removal piece form the dedusting hole passed for piston rod, in the present embodiment, the polyurethane elastomer layer that dedusting hole one deck 3mm bonding with in the one side of plunger rod contacts is thick.Polyurethane elastomer is wear-resisting, and possesses good elasticity and pliability, in using process, polyurethane elastomer layer and piston rod surface are fitted, and the dust being attached to piston rod surface can be scraped, polyurethane elastomer wear-resisting property is good, so can use the longer time.
In the present embodiment, each dust removal piece is connected by screw on fitting seat, and dust removal piece is provided with semicircular opening slot.Two dust removal piece are set, and when being connected by screw, do not need dismounting piston rod just can install or dismantle dust removal piece.
Embodiment 2
As shown in Figures 3 and 4, be: dust removal piece arranges two with the difference part of embodiment 1, fitting seat is provided with two draw-in grooves in L-type, two dust removal piece is equipped with the flange coordinating and insert draw-in groove.When installing dust removal piece, first by two dust removal piece splits, then the flange in two dust removal piece being aligned with two draw-in grooves respectively, after insertion, rotating dust removal piece, can dust removal piece be stuck in fitting seat, by the more convenient installation and removal of the mode of this clamping.
Specific works principle:
Be specifically described for embodiment 1 below: as illustrated in fig. 1 and 2, before using, two dust removal piece are arranged on fitting seat, because two dust removal piece form the dedusting hole passed for piston rod, polyurethane elastomer layer bonding in this dedusting hole and piston rod outer surface are fitted, after piston rod stretches out from pressure cylinder, dust is attached to piston rod surface, when piston rod retraction pressure cylinder, piston rod is first through dedusting hole, now, the dust that piston rod surface adheres to can scrape by polyurethane elastomer layer in dust removal piece substantially completely, piston rod retraction pressure cylinder time, surface has not had dust to adhere to, thus avoid dust to enter between piston rod and seal guide sleeve.In addition, after dust removal piece is worn, only dust removal piece need be dismantled, the dust removal piece then more renewed, compared with dismantling pressure cylinder with background technique, obviously simpler, convenient.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. gas spring device, comprise pressure cylinder, piston rod, piston and seal guide sleeve, described piston seal is connected in pressure cylinder, described piston rod one end is connected with piston, described seal guide sleeve is connected to the inside of pressure cylinder one end, described piston rod runs through seal guide sleeve, it is characterized in that, also comprise dedusting structure, this dedusting structure comprises fitting seat and at least two dust removal piece be detachably connected on fitting seat, described fitting seat is connected to pressure cylinder and stretches out on the end face of piston rod one end, multiple dust removal piece forms the dedusting hole passed for piston rod, this dedusting hole and piston rod outer surface are fitted.
2. gas spring device according to claim 1, is characterized in that, described dust removal piece arranges two, and each dust removal piece is connected by screw on fitting seat, and dust removal piece is provided with semicircular opening slot.
3. gas spring device according to claim 1, is characterized in that, the one side of described dust removal piece and plunger rod contacts is provided with polyurethane elastomer layer.
4. the gas spring device according to claim 1 or 3, is characterized in that, described dust removal piece arranges two, and described fitting seat is provided with two draw-in grooves in L-type, two dust removal piece is equipped with the flange coordinating and insert draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510722547.7A CN105257760A (en) | 2015-10-31 | 2015-10-31 | Gas spring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510722547.7A CN105257760A (en) | 2015-10-31 | 2015-10-31 | Gas spring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105257760A true CN105257760A (en) | 2016-01-20 |
Family
ID=55097609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510722547.7A Pending CN105257760A (en) | 2015-10-31 | 2015-10-31 | Gas spring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105257760A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650183A (en) * | 2016-04-11 | 2016-06-08 | 常州气弹簧有限公司 | Cleaning type gas spring |
| CN109442255A (en) * | 2018-10-24 | 2019-03-08 | 杨晓鑫 | A kind of road at night time construction lighting device for reducing telescoping friction |
-
2015
- 2015-10-31 CN CN201510722547.7A patent/CN105257760A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650183A (en) * | 2016-04-11 | 2016-06-08 | 常州气弹簧有限公司 | Cleaning type gas spring |
| CN109442255A (en) * | 2018-10-24 | 2019-03-08 | 杨晓鑫 | A kind of road at night time construction lighting device for reducing telescoping friction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160120 |