CN205578400U - Hydraulic cylinder of two -way buffering - Google Patents
Hydraulic cylinder of two -way buffering Download PDFInfo
- Publication number
- CN205578400U CN205578400U CN201620322431.4U CN201620322431U CN205578400U CN 205578400 U CN205578400 U CN 205578400U CN 201620322431 U CN201620322431 U CN 201620322431U CN 205578400 U CN205578400 U CN 205578400U
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Abstract
The utility model discloses a hydraulic cylinder of two -way buffering, end cover and the DUCT SHROUD, the swing joint that locate the cylinder body both ends including the cylinder body, respectively in the cylinder body the piston and with hinge joint's piston rod, set up the glib talker on the cylinder body, the outer terminal surface middle part of piston sets up an annular groove, sets up a ring type seal on the annular groove, the both sides that the outer terminal surface of piston lies in the annular groove respectively set up a spiral groove. One end with hinge joint on the piston rod is equipped with the annular table rank, is equipped with annular joint recess on the annular table rank, the piston suit on annular table rank and the joint on annular joint recess. The utility model discloses a piston both ends set up spiral groove, the two -way buffering hydro -cylinder of dominant discharge is through changing different oil feeding area control oil pressure flows, simple structure, buffering effect is good, can realize two -way buffer protection equipment during the operation, increase of service life, reduction use cost.
Description
Technical field
This utility model relates to hydraulic jack technology, particularly relates to the hydraulic jack of a kind of bidirectional buffering.
Background technology
Over 10 years, along with the high speed development of economic construction, in engineering machinery, produce equipment and automobile industry and the demand of the hydraulic jack of high standard, high-performance and high safety performance is got more and more.When hydraulic jack drives quality bigger, during movement velocity workpiece faster, buffer unit to be arranged, its objective is to eliminate because inertia force and the hydraulic coupling of moving component cause the mechanical impact between piston and end cap, simultaneously with in order to reduce piston when changing the direction of motion, the noise of liquid, oil cylinder all only one of which directions buffering of most pooling features in the market, oil cylinder at some rapid operation environment, there is complex structural designs, and when there are quality problems in any one element, whole oil hydraulic system can be produced potential safety hazard, at the equipment high for some long-term action and prescription, these oil cylinders are to meet the market demand.
Oil cylinder of the prior art has following defects that one, the cylinder movement system of prior art, need to realize pooling feature, as: throttling slot type buffer unit, need at the higher groove of end cap and piston rod machining accuracy, all there is processing technique challenge in these, as more of increased the oil cylinder of choke valve on market, these oil cylinders need to increase choke valve and oil path block, these accessories additionally increased, cost is higher., there is processing technique complexity in two, the cylinder movement system of prior art or cost is higher, for processing technique, cushion cylinder on market, has strict demand to machining accuracy and lathe, and gap is little, oil cylinder will be made excessively to buffer, gap is big, and buffering effect is inconspicuous, if taking to increase the oil cylinder of choke valve, if Solid Coupling Analysis of Throttle Valve, the oil cylinder of whole motor system is operationally, it is impossible to obtain controlled, and whole plant machinery produces potential safety hazard or the system of damage.Three, the cylinder movement system of prior art is owing to processing technique is complicated and increases extra choke valve, makes whole manufacturing cost and volume to increase, installs and operate time-consuming.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that the hydraulic jack of a kind of bidirectional buffering, simple in construction, can realize bidirectional buffering protection equipment during operation.
In order to achieve the above object, the technical solution adopted in the utility model is: the hydraulic jack of a kind of bidirectional buffering, the end cap that including cylinder body, is respectively arranged on cylinder body two ends and lead lid, the piston being movably connected in cylinder body and the piston rod being connected with piston, cylinder body arranges oil nozzle；Arranging an annular groove in the middle part of described piston outer face, annular groove arranges an O-ring seal, described piston outer face is positioned at the both sides of annular groove and respectively arranges a spiral groove.
As preferred embodiment of the present utility model, one end that piston rod described in the utility model is connected with piston is provided with ring-shaped step, and ring-shaped step is provided with annular clamping groove, and described piston bush is loaded on ring-shaped step and is connected on annular clamping groove.
As preferred embodiment of the present utility model, piston described in the utility model is bar shape, and piston inner hole is equipped with annular seal groove with leading to cover to coordinate with piston rod on the endoporus contacted, and annular seal groove is equipped with O-ring seal.
As preferred embodiment of the present utility model, piston rod surface described in the utility model is provided with hard chromium.
As preferred embodiment of the present utility model, end cap described in the utility model is welded on cylinder body, leads lid and is threadedly secured on cylinder body.
Compared with prior art; the beneficial effects of the utility model are: piston two ends spiral groove is set; control flow Bidirectional cushion cylinder by changing different oil-feed area control oil pressure flows; simple in construction; good buffer effect; bidirectional buffering protection equipment can be realized during operation, increase the service life, reduce use cost.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model；
Fig. 2 is oil nozzle of the present utility model and logical pasta amasss structural representation；
Fig. 3 is that oil cylinder of the present utility model stretches out structural representation；
Fig. 4 is oil cylinder retraction structure schematic diagram of the present utility model.
Detailed description of the invention
Purport of the present utility model is to overcome the deficiencies in the prior art, it is provided that the hydraulic jack of a kind of bidirectional buffering, by changing different oil-feed area control oil pressure flows, simple in construction, good buffer effect.It is described in detail referring to the drawings below in conjunction with embodiment, in order to technical characteristic of the present utility model and advantage are interpretated more in-depth.
Structural representation of the present utility model is as shown in Figure 1, a kind of hydraulic jack of bidirectional buffering, the end cap 2 that including cylinder body 1, is respectively arranged on cylinder body 1 two ends and lead lid 3, the piston 4 that is movably connected in cylinder body 1 and the piston rod 5 being connected with piston 4, cylinder body 1 arranges oil nozzle 6；Arranging an annular groove 9 in the middle part of described piston 4 outer face, annular groove 9 arranges an O-ring seal, the both sides that described piston 4 outer face is positioned at annular groove 9 respectively arrange a spiral groove 10.As in figure 2 it is shown, the oil nozzle area of said two oil nozzle 6 is set to S1, the logical pasta of the spiral groove 10 of both sides amasss S2, and the area that the area of S1 is more than S2, plays cushioning effect, thus effectively controls flow.Increase spiral groove 10 cleverly at piston 4 two ends, in hydraulic system pressure one timing, hydraulic pressure enters inside oil cylinder by the helicla flute 10 on piston 4, by controlling oil-feed area control flow.Certainly, this utility model is not limited to spiral groove, it is possible to be set as the groove of irregular zigzag or regular zigzags.
As shown in Figure 1, the one end being connected with piston 4 on piston rod 5 described in the utility model is provided with ring-shaped step 7, ring-shaped step 7 is provided with annular clamping groove 8, described piston 4 is set on ring-shaped step 7 and is connected on annular clamping groove 8, piston 4 is more firm with the connection of piston rod 5 by ring-shaped step 7 and annular clamping groove 8, increases the service life.Piston 4 described in the utility model is in bar shape, and piston 4 endoporus is equipped with annular seal groove 11 with leading to coordinate with piston rod 5 on lid 3 on the endoporus contacted, and annular seal groove 11 is equipped with O-ring seal, with the use of O-ring seal, reaches preferable sealing effectiveness.It addition, described piston rod 5 surface is provided with hard chromium, there is preferable anticorrosion ability.
End cap 2 described in the utility model is welded on cylinder body 1, leads lid 3 and is threadedly secured on cylinder body 1.
Operation principle of the present utility model is as follows: by increasing spiral groove 10 cleverly at piston 4 two ends, in hydraulic system pressure one timing, hydraulic pressure enters inside oil cylinder by the spiral groove 10 on piston 4, by controlling oil-feed area control flow, oil cylinder slowly will move, after piston moves to fuel feed hole, oil-feed area and flow increase, oil cylinder is by rapid movement, and same principle, when oil cylinder reaches maximum position, owing to area reduces, oil cylinder starts slowly to stretch out, until maximum position, otherwise.As it is shown on figure 3, be followed successively by from top to bottom: the first step, 1. oil-feed cross section S2,2. oil return cross section S1, oil cylinder slowly stretches out；Second step, 1. oil-feed cross section S1,2. oil return cross section S1, oil cylinder quickly stretches out；3rd step, 1. oil-feed cross section S1,2. oil return cross section S2, oil cylinder slowly stretches out.Same principle when oil cylinder is retracted.As shown in Figure 4, it is followed successively by from top to bottom: the first step, 2. oil-feed cross section S2,1. oil return cross section S1, oil cylinder is slowly retracted；Second step, 2. oil-feed cross section S1,1. oil return cross section S1, oil cylinder fast retractile；3rd step, 2. oil-feed cross section S1,1. oil return cross section S2, oil cylinder is slowly retracted.Bidirectional cushion cylinder is by changing different oil-feed area control oil pressure flows, and this kind of buffering has the feature of simple in construction, good buffer effect, thus realizes controlling flow.
By the technical scheme in above example, this utility model is carried out clear, complete description, it is clear that described embodiment is the embodiment of this utility model part rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Claims (5)
1. the hydraulic jack of a bidirectional buffering, it is characterized in that: include cylinder body (1), be respectively arranged on the end cap (2) at cylinder body (1) two ends and lead lid (3), the piston (4) that is movably connected in cylinder body (1) and the piston rod (5) being connected with piston (4), cylinder body (1) arranges oil nozzle (6)；Arranging an annular groove (9) in the middle part of described piston (4) outer face, annular groove (9) arranges an O-ring seal, described piston (4) outer face is positioned at the both sides of annular groove (9) and respectively arranges a spiral groove (10).
The hydraulic jack of bidirectional buffering the most according to claim 1, it is characterized in that: the upper one end being connected with piston (4) of described piston rod (5) is provided with ring-shaped step (7), ring-shaped step (7) is provided with annular clamping groove (8), and described piston (4) is set in ring-shaped step (7) and above and is connected in annular clamping groove (8).
The hydraulic jack of bidirectional buffering the most according to claim 2, it is characterized in that: described piston (4) is in bar shape, piston (4) endoporus is equipped with annular seal groove (11) with leading on the upper endoporus contacted with piston rod (5) cooperation of lid (3), and annular seal groove is equipped with O-ring seal on (11).
The hydraulic jack of bidirectional buffering the most according to claim 3, it is characterised in that: described piston rod (5) surface is provided with hard chromium.
5. according to the hydraulic jack of the bidirectional buffering according to any one of claim 1-4, it is characterised in that: described end cap (2) is welded on cylinder body (1), leads lid (3) and is threadedly secured on cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620322431.4U CN205578400U (en) | 2016-04-18 | 2016-04-18 | Hydraulic cylinder of two -way buffering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620322431.4U CN205578400U (en) | 2016-04-18 | 2016-04-18 | Hydraulic cylinder of two -way buffering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205578400U true CN205578400U (en) | 2016-09-14 |
Family
ID=56862983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620322431.4U Expired - Fee Related CN205578400U (en) | 2016-04-18 | 2016-04-18 | Hydraulic cylinder of two -way buffering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205578400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345128A (en) * | 2019-08-09 | 2019-10-18 | 四川优机实业股份有限公司 | Rubbish van lifts hydraulic cylinder buffer structure |
-
2016
- 2016-04-18 CN CN201620322431.4U patent/CN205578400U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345128A (en) * | 2019-08-09 | 2019-10-18 | 四川优机实业股份有限公司 | Rubbish van lifts hydraulic cylinder buffer structure |
| CN110345128B (en) * | 2019-08-09 | 2024-05-24 | 四川优机实业股份有限公司 | Buffer structure of lifting hydraulic cylinder of garbage transfer truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20210418 |