CN205371152U - Automatic buffering hydro -cylinder - Google Patents
Automatic buffering hydro -cylinder Download PDFInfo
- Publication number
- CN205371152U CN205371152U CN201521062331.4U CN201521062331U CN205371152U CN 205371152 U CN205371152 U CN 205371152U CN 201521062331 U CN201521062331 U CN 201521062331U CN 205371152 U CN205371152 U CN 205371152U
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- Prior art keywords
- piston rod
- piston
- cylinder
- fixed
- cylinder cap
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Abstract
The application discloses an automatic buffering hydro -cylinder, comprising a cylinder body, a piston, a piston rod, cylinder cap and direct current constant voltage power supply, the piston rod is fixed in on the piston, the cylinder cap is equipped with the buffering bucket dorsad on the terminal surface of piston, buffering bucket bung hole is fixed on the cylinder cap, the buffering bucket is coaxial with the piston rod, and the piston rod runs through buffering bucket barrel head, it has magnetorheological suspensions to be full of in the buffering bucket, the outside winding of buffering bucket wall has the magnetic induction loop, the magnetic induction loop is equipped with " + ", " - " two joints, be fixed with the resistance wire on the cylinder body outer wall, resistance wire length is less than piston rod moving distance, the resistance wire is close to " + " joint that the magnetic induction loop is connected to the head side, be fixed with the bracing piece on the piston rod, be fixed with the metal plectrum on the bracing piece, positive is connected to the metal plectrum, the negative pole of " - " articulate power of magnetic induction loop. This patent is anticipated and is realized slowing down and the buffering automatically near piston moves the cylinder cap time providing one kind to avoid piston and cylinder cap to take place the automatic buffering hydro -cylinder who strikes.
Description
Technical field
This utility model relates to oil cylinder field, particularly relates to a kind of automatic buffer oil cylinder.
Background technology
Hydraulic energy is changed into mechanical energy, does the hydraulic actuator of straight reciprocating motion (or oscillating motion) by hydraulic jack.Using Driven by Hydraulic Cylinder to have the mechanism of certain mass in hydraulic system, have bigger kinetic energy when hydraulic jack moves to stroke end, process as do not done deceleration, will there is mechanical collision in hydraulic cylinder piston and cylinder cap, produce impact, noise, have destructiveness.For relaxing and avoiding this harm to occur, deceleration device can be set in hydraulic circuit or in cylinder body, set buffer unit.
Magnetic flow liquid is the fluid that in intellectual material, controllability is good, and it is by the suspended substance of high magnetic permeability, low hysteresis small soft magnetic particles and non magnetic liquid mixing.This suspended substance presents low viscous fluid behaviour under zero magnetic field condition, and becomes the semisolid characteristic of high viscosity, lazy flow under the action of a magnetic field mutually, and magnetic field is more strong, and the viscosity of magnetic flow liquid is more high, mobility is more low.Magnetic flow liquid has phase transformation fast response time, can provide the features such as continuous and reversible damping force, low electrical power demand, is suitable in cushioning device for oil cylinder.But in prior art, magnetic flow liquid does not also simply and efficiently utilize to hydraulic jack buffering field.
Utility model content
This utility model is intended to provide a kind of automatic buffer oil cylinder, is automatically obtained deceleration and cushions time near cylinder piston motion to cylinder cap, to avoid piston and cylinder cap to impact.
nullAutomatic buffer oil cylinder in this programme，Including cylinder body、Piston、Piston rod、Cylinder cap and DC constant voltage power supply，Piston rod is fixed on piston，Piston is slidably connected in cylinder body，Cylinder cap is fixed on cylinder body，Cylinder cap has circular hole，Piston rod is slidably connected in cylinder cap by circular hole，The end face of cylinder cap piston dorsad is provided with buffer barrel，Buffer barrel bung is fixed on cylinder cap，Buffer barrel is coaxial with piston rod，And piston rod runs through buffer barrel drum head，For being full of the magnetorheological sap cavity of magnetic flow liquid in buffer barrel，Buffer barrel bucket wall outer felt is wound with magnetic induction loop，Magnetic induction loop be provided with "+"、Two joints of "-"，Near cylinder cap side on outer wall of cylinder block、It is parallel to piston rod axis direction and is fixed with resistance wire，Resistance wire length is less than piston rod movement stroke，Resistance wire near head side connect magnetic induction loop "+" joint，Piston rod is fixed with support bar，Support bar is fixed with the metal plectrum of a bar shaped，The axis of metal plectrum is parallel to piston rod axis，When piston rod stretches out, metal plectrum free end and resistance wire offset，Metal plectrum connects positive source，The "-" joint of magnetic induction loop connects the negative pole of power supply.
The know-why of this programme and have the beneficial effect that 1, piston rod is in buffer barrel, the piston rod of motion is produced damping force by the magnetic flow liquid in buffer barrel, and the magnetic field produced after utilizing magnetic induction loop energising makes buffer barrel magnetic flow liquid undergo phase transition, magnetic flow liquid viscosity after phase transformation raises, mobility reduces, and then rising damping force, hinder the slip of piston rod, and then play cushioning effect；2, in order to realize automatic buffer function when making the piston rod movement of oil cylinder to end of travel, it is fixed with resistance wire outside cylinder block and head end, resistance wire is connected on magnetic induction loop circuit, and contact has the metal plectrum with piston rod movement on resistance wire, automatically controlled whether by the movement with piston rod of metal plectrum to connect circuit, and automatically control and access the length of resistance wire in circuit, and then control to access the size of resistance in circuit, thus controlling the size of electric current in magnetic induction loop；When piston rod movement to midstroke adnexa, at piston close in the stroke of cylinder cap, piston rod stretches out more many, the resistance wire length accessing magnetic induction loop circuit is more short, resistance is more little, when voltage constant, electric current in circuit is more big, and the electromagnetism intensity that magnetic induction loop produces is more big, and the viscosity of magnetic flow liquid is more high, mobility is more low, and then magnetic flow liquid is more big to the damping force of piston rod, hinder the slip of piston rod, make piston rod slow down, and then make piston slow down, play cushioning effect, it is to avoid piston and cylinder cap impact；On the contrary, when piston moves away from cylinder cap, the damping force of piston rod is diminished by magnetic flow liquid, until metal plectrum slides into disengaging and when contacting of resistance wire, circuit disconnects, and magnetic induction loop no longer produces magnetic field, and magnetic flow liquid becomes the liquid of low viscosity, high fluidity, cushioning effect lost efficacy, and was conducive to the contraction of oil cylinder.
Prioritization scheme one based on such scheme: be provided with sealing ring at the bottom of described buffer barrel and between described piston rod, it is to avoid magnetic flow liquid leaks from the gap between buffer barrel and piston rod.
Prioritization scheme two based on scheme one: the diameter of described support bar is more than 10mm, it is ensured that support bar has some strength, it is to avoid make metal plectrum can not contact with resistance wire support bar bending during the motion of metal plectrum, thus avoiding circuit breaker.
Prioritization scheme three based on scheme two: described DC constant voltage supply voltage is less than 36V, and the supply voltage lower than 36V is safe voltage, it is to avoid electricity consumption person security incident occurs.
Prioritization scheme four based on scheme three: be provided with valve bottom described buffer barrel, magnetorheological sap cavity in valve connection buffer barrel, conveniently in buffer barrel, it is filled with magnetic flow liquid.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment automatic buffer oil cylinder.
Detailed description of the invention
Below by detailed description of the invention, this utility model is described in further detail:
Accompanying drawing labelling in Figure of description includes: cylinder body 1, piston 2, piston rod 3, cylinder cap 4, DC source 5, buffer barrel 6, sealing ring 7, valve 8, magnetic induction loop 9, resistance wire 10, support bar 11, plectrum 12, magnetic flow liquid 13.
nullEmbodiment automatic buffer oil cylinder is substantially as shown in Figure 1: include cylinder body 1、Piston 2、Piston rod 3、Cylinder cap 4 and 24V DC source 5，Piston rod 3 is fixed on piston 2，Piston 2 is slidably connected in cylinder body 1，Cylinder cap 4 is fixed on cylinder body 1，Cylinder cap 4 has circular hole，Piston rod 3 is slidably connected in cylinder cap 4 by circular hole，The end face of cylinder cap 4 piston 2 dorsad is provided with buffer barrel 6，Buffer barrel 6 bung is fixed on cylinder cap 4，Buffer barrel 6 is coaxial with piston rod 3，And piston rod 3 runs through buffer barrel 6 drum head，Sealing ring 7 it is provided with between buffer barrel 6 end and piston rod 3，Magnetic flow liquid 13 it is filled with in buffer barrel 6，Valve 8 is installed bottom buffer barrel 6，Valve 8 connects magnetorheological sap cavity in buffer barrel 6，6 barrels of wall outer felt of buffer barrel are wound with magnetic induction loop 9，Magnetic induction loop 9 be provided with "+"、Two joints of "-"，Near cylinder cap 4 side on cylinder body 1 outer wall、It is parallel to piston rod 3 axis direction and is fixed with resistance wire 10，Resistance wire 10 length is less than piston rod 3 movement travel，Resistance wire 10 near cylinder cap 4 end connect magnetic induction loop 9 "+" joint，Piston rod 3 is fixed with the support bar 11 that diameter is 12mm，Support bar 11 is fixed with the metal plectrum 12 of a bar shaped，The axis of metal plectrum 12 is parallel to piston rod 3 axis，When piston rod 3 stretches out, metal plectrum 12 free end and resistance wire 10 offset，Metal plectrum 12 connects positive source，The "-" joint of magnetic induction loop 9 connects the negative pole of power supply.
Resistance wire 10 fixing outside cylinder body 1 cylinder cap 4 end, it is connected on magnetic induction loop 9 circuit, on resistance wire 10, contact has the metal plectrum 12 with piston rod 3 motion, automatically controlled whether by the movement with piston rod 3 of metal plectrum 12 to connect circuit, and automatically control and access the length of resistance wire 10 in circuit, and then control to access the size of resistance in circuit, thus controlling the size of electric current in magnetic induction loop 9, thus controlling the phase transformation of magnetic flow liquid 13.
In the process that piston rod 3 stretches out, in normal travel, metal plectrum 12 can not contact with resistance wire 10, circuit can not form path, magnetic flow liquid 13 keeps liquid condition not have cushioning effect, when piston rod 3 moves near stroke end, at piston 2 close in the stroke of cylinder cap 4, metal plectrum 12 contact resistance silk 10, piston rod 3 stretches out more many, resistance wire 10 length accessing magnetic induction loop 9 circuit is more short, resistance is more little, electric current in circuit is more big, the electromagnetism intensity that magnetic induction loop 9 produces is more big, the viscosity of magnetic flow liquid 13 is more high, mobility is more low, and then magnetic flow liquid is more big to the damping force of piston rod 3, hinder the slip of piston rod 3, play cushioning effect；On the contrary, when piston 2 moves away from cylinder cap 4, the damping force of piston rod 3 is diminished by magnetic flow liquid, until metal plectrum 12 slides into disengaging and when contacting of resistance wire 10, circuit disconnects, magnetic induction loop 9 no longer produces magnetic field, and magnetic flow liquid 13 becomes the liquid of low viscosity, high fluidity, and cushioning effect lost efficacy.
Above-described is only embodiment of the present utility model, 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 premise without departing from this utility model structure, it is also possible to make some deformation and improvement; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. records the content that may be used for explaining claim.
Claims (5)
- null1. automatic buffer oil cylinder，Including cylinder body、Piston、Piston rod、Cylinder cap and DC constant voltage power supply，Piston rod is fixed on piston，Piston is slidably connected in cylinder body，Cylinder cap is fixed on cylinder body，Cylinder cap has circular hole，Piston rod is slidably connected in cylinder cap by circular hole，It is characterized in that，The end face of cylinder cap piston dorsad is provided with buffer barrel，Buffer barrel bung is fixed on cylinder cap，Buffer barrel is coaxial with piston rod，And piston rod runs through buffer barrel drum head，For being full of the magnetorheological sap cavity of magnetic flow liquid in buffer barrel，Buffer barrel bucket wall outer felt is wound with magnetic induction loop，Magnetic induction loop be provided with "+"、Two joints of "-"，Outer wall of cylinder block is fixed with resistance wire near cylinder cap side，Resistance wire is parallel to piston rod，Resistance wire length is less than piston rod movement stroke，Resistance wire near head side connect magnetic induction loop "+" joint，Piston rod is fixed with support bar，Support bar is fixed with the metal plectrum of a bar shaped，The axis of metal plectrum is parallel to piston rod axis，Metal plectrum and resistance wire are slidably connected，Metal plectrum connects positive source，The "-" joint of magnetic induction loop connects the negative pole of power supply.
- 2. automatic buffer oil cylinder according to claim 1, it is characterised in that: it is provided with sealing ring at the bottom of described buffer barrel and between described piston rod.
- 3. automatic buffer oil cylinder according to claim 2, it is characterised in that: the diameter of described support bar is more than 10mm.
- 4. automatic buffer oil cylinder according to claim 3, it is characterised in that: described DC constant voltage supply voltage is less than 36V.
- 5. automatic buffer oil cylinder according to claim 4, it is characterised in that: valve is installed, magnetorheological sap cavity in valve connection buffer barrel bottom described buffer barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521062331.4U CN205371152U (en) | 2015-12-20 | 2015-12-20 | Automatic buffering hydro -cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521062331.4U CN205371152U (en) | 2015-12-20 | 2015-12-20 | Automatic buffering hydro -cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371152U true CN205371152U (en) | 2016-07-06 |
Family
ID=56258605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521062331.4U Expired - Fee Related CN205371152U (en) | 2015-12-20 | 2015-12-20 | Automatic buffering hydro -cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707784A (en) * | 2019-01-16 | 2019-05-03 | 大连富地重工机械制造有限公司 | Pneumatic buffer device and method |
| CN116006531A (en) * | 2023-03-28 | 2023-04-25 | 扬州通海汽车配件有限公司 | Landing leg of semitrailer |
-
2015
- 2015-12-20 CN CN201521062331.4U patent/CN205371152U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707784A (en) * | 2019-01-16 | 2019-05-03 | 大连富地重工机械制造有限公司 | Pneumatic buffer device and method |
| CN109707784B (en) * | 2019-01-16 | 2024-02-23 | 大连富地重工机械制造有限公司 | Pneumatic buffering device and method |
| CN116006531A (en) * | 2023-03-28 | 2023-04-25 | 扬州通海汽车配件有限公司 | Landing leg of semitrailer |
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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 |
Granted publication date: 20160706 Termination date: 20201220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |