CN203321926U - Dual-purpose piston hydraulic cylinder - Google Patents
Dual-purpose piston hydraulic cylinder Download PDFInfo
- Publication number
- CN203321926U CN203321926U CN201320249162XU CN201320249162U CN203321926U CN 203321926 U CN203321926 U CN 203321926U CN 201320249162X U CN201320249162X U CN 201320249162XU CN 201320249162 U CN201320249162 U CN 201320249162U CN 203321926 U CN203321926 U CN 203321926U
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- piston
- piston rod
- cylinder body
- oil
- spacer ring
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Abstract
The utility model discloses a dual-purpose piston hydraulic cylinder and relates to a hydraulic element. A plurality of distance rings are evenly arranged in an inner cavity of a piston rod, the peripheries of the distance rings are welded to the inner wall of the piston rod or connected to the inner wall of the piston rod through threads, and an oil passing hole is manufactured in the center of each distance ring. Force is transferred to the distance rings with the differential method and the idea of partial strengthening, thus, the force action distance is greatly shortened, the inertia moment of the partial cross section of the piston rod is promoted, the bending resistance of the piston rod is improved, the radial size of the piston rod can be effectively reduced, the oil inlet pressure of an oil port can be reduced substantially, and the energy consumption is reduced Besides, the oil pressure acts on a piston shaft in the radial direction and can compensate for the sealing of a piston, and the internal discharge of the oil cylinder can be effectively reduced.
Description
Technical field
The utility model relates to a kind of hydraulic element, is specifically related to a kind of low energy consumption of using on petrochemical industry, water conservancy, lathe, engineering machinery and building machinery, lets out the double-acting piston oil hydraulic cylinder in low.
Background technique
Oil cylinder is widely used in petrochemical industry, water conservancy, lathe, engineering machinery and building machinery technical field, as the straight-line actuator of object, plays vital effect.And to large scale development, oil cylinder is also increasingly to the future development maximized along with lathe, construction project.The double-acting piston oil hydraulic cylinder used at present, the pressure-acting of upper end is on the circular hole of piston rod upper cover, and the lower end pressure-acting is below piston, and upper and lower two pressure are distant, easily piston rod bent.For guaranteeing the stability of piston rod, diameter of piston rod must be strengthened, this directly causes inner chamber of cylinder block area π D
2/ 4 annular housing area π (D that form with inner chamber of cylinder block and piston rod exocoel
2-d
2It is large that the ratio of)/4 becomes, oil cylinder from the oil inlet and outlet oil-feed, during the piston rod retraction, pressure can increase substantially, and consumes energy larger.
In addition, the one-way sealing seal on piston is when prolonged exercise, and leakage rate strengthens, when oil cylinder is supporting a weight or is stepping up workpiece to be machined, if let out in oil cylinder occurs, will cause weight directly to drop or workpiece directly flies out from height in the air, cause irretrievable loss.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of double-acting piston oil hydraulic cylinder, and at the uniform multi-disc spacer ring that arranges of piston rod cavity, the spacer ring peripheral weld is connected on the inwall of piston rod, perhaps by screw thread, with the inwall of piston rod, be connected, the center of spacer ring makes oil-through hole.Reach low energy consumption, low effect of leaking.
The utility model is achieved by the following technical solution: a kind of double-acting piston oil hydraulic cylinder, it comprises: cylinder body, piston, piston rod, cylinder body base and piston rod upper cover.Described cylinder body base is fixed on the lower end of cylinder body.Described piston rod is circular pipe, and described piston rod upper cover is fixed on the upper end of piston rod; Piston-rod lower end has piston shaft; Described piston shaft is circular pipe, and piston shaft is welded on the lower end of piston rod.Described piston is circular pipe, and the endoporus drive fit of circular pipe is sleeved on piston shaft, and the piston shaft lower end is fixed piston by nut, and with Cock screw by nut locking; The surface of contact of piston and piston shaft has O RunddichtringO II, and the cylindrical of piston is connected with cylinder body with guide ring by one-way sealing seal I.There is guide sleeve described cylinder body upper end, and described guide sleeve is bolted on cylinder body, and the surface of contact of guide sleeve and cylinder body has O RunddichtringO I, and the guide sleeve endoporus is connected with the piston rod cylindrical by one-way sealing seal II; Described cylinder body top arranges oil inlet and outlet, and high pressure oil enters inner chamber of cylinder block by upper oil inlet and outlet.On described cylinder body base, lower oil inlet and outlet is set, makes the oil transportation hole on the cylinder body base, high pressure oil enters piston rod cavity by lower oil inlet and outlet and oil transportation hole.It is characterized in that: at described piston rod cavity, spacer ring is set, described spacer ring is multi-disc, and the multi-disc spacer ring is arranged on the inner hole wall of piston rod; Spacer ring is flat circular plate, and the center of circular plate makes oil-through hole.
Described spacer ring peripheral weld is connected on the inwall of piston rod.
Described spacer ring periphery is connected with the inwall of piston rod by screw thread.
Good effect of the present utility model is:
1, energy consumption low, leak lowly, be applicable to the energy, water conservancy, lathe, engineering machinery and building machinery.
2, the piston rod anti-bending strength good, reduce oil cylinder retraction pressure, reach energy-conservation effect.
3, reduce to greatest extent the radial dimension of piston rod, reduce the oil hydraulic cylinder fabricating cost.
4, by the mode of compensation, make interior discharge be reduced to minimum.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the utility model embodiment one structural representation.
Fig. 2 is the utility model embodiment two structural representations.
In figure: 1, cylinder body base, 1-1, oil transportation hole, 1-2, earrings I, 2, lower oil inlet and outlet, 3, nut, 4, Cock screw, 5, piston, 6, piston shaft, 7, one-way sealing seal I, 8, guide ring, 9, cylinder body, 10, piston rod, 11, spacer ring, 11-1, oil-through hole, 12, guide sleeve, 13, one-way sealing seal II, 14, piston rod upper cover, 14-1, earrings II, 15, O RunddichtringO I, 16, upper oil inlet and outlet, 17, O RunddichtringO II, 18, flange plate.
Embodiment
As shown in Figure 1 and Figure 2: a kind of double-acting piston oil hydraulic cylinder, it comprises: cylinder body 9, piston 5, piston rod 10, cylinder body base 1 and piston rod upper cover 14.Described cylinder body base 1 is fixed on the lower end of cylinder body 9.Described piston rod 10 is circular pipe, and described piston rod upper cover 14 is fixed on the upper end of piston rod 10.There is piston shaft 6 piston rod 10 lower ends; Described piston shaft 6 is circular pipe, and piston shaft 6 is welded on the lower end of piston rod 10.Described piston 5 is circular pipe, and the endoporus drive fit of circular pipe is sleeved on piston shaft 6, and piston shaft 6 lower ends are fixing by piston 5 by nut 3, and with Cock screw 4, nut 3 is locked.Piston 5 has O RunddichtringO II 17 with the surface of contact of piston shaft 6, and the cylindrical of piston 5 is connected with cylinder body 9 with guide ring 8 by one-way sealing seal I 7.There is guide sleeve 12 described cylinder body 9 upper ends, and described guide sleeve 12 is bolted on cylinder body 9, and guide sleeve 12 has O RunddichtringO I 15 with the surface of contact of cylinder body 9, and guide sleeve 12 endoporus are connected with piston rod 10 cylindricals by one-way sealing seal II 13.Described cylinder body 9 tops arrange oil inlet and outlet 16, and high pressure oil enters cylinder body 9 inner chambers by upper oil inlet and outlet 16.Lower oil inlet and outlet 2 is set on described cylinder body base 1, makes oil transportation hole 1-1 on cylinder body base 1, high pressure oil enters piston rod 10 inner chambers by lower oil inlet and outlet 2 and oil transportation hole 1-1.It is characterized in that: at described piston rod 10 inner chambers, spacer ring 11 is set, described spacer ring 11 is multi-disc, and multi-disc spacer ring 11 is arranged on the inner hole wall of piston rod 10; Spacer ring 11 is flat circular plate, and the center of circular plate makes oil-through hole 11-1.
The numerous embodiments that is connected with of spacer ring 11 and piston rod 10, a kind of embodiment is that spacer ring 11 peripheral welds are connected on the inwall of piston rod 10; Another kind of embodiment is that spacer ring 11 peripheries are connected with the inwall of piston rod 10 by screw thread.
The effect of spacer ring 11 is: utilize the method for differential that power is shifted and local strengthening thought, power is transferred on spacer ring 11, greatly shortened power effect distance, and promoted partial cross section's moment of inertia of piston rod 10, promoted the anti-bending strength of piston rod 10, can effectively reduce the radial dimension of piston rod 10, significantly reduce the input pressure of hydraulic fluid port 10, reduce power consumption.In addition, oil pressure acts on piston shaft 8 shoulder holes along piston shaft 6 radial direction, and the one-way sealing seal I 7 on piston 6 is had to compensating action, can effectively reduce discharge in oil cylinder.
The utility model is applicable to the double-acting piston oil hydraulic cylinder of various different structures, Figure 1 shows that the first embodiment oil hydraulic cylinder, and earrings II 14-1 is arranged at the top of piston rod upper cover 14; Earrings I 1-2 is arranged at the bottom of cylinder body base 1, and oil hydraulic cylinder is connected with driven component with earrings II 14-1 by earrings II 14-1.Figure 2 shows that the second embodiment oil hydraulic cylinder, piston rod upper cover 14 and cylinder body base 1 are flat board, at the upper end of cylinder body 9 welding flange 18, oil hydraulic cylinder, by flange plate 18, are arranged on driven component.
Should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characteristics is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technological scheme scope that the utility model asks for protection.
Claims (3)
1. a double-acting piston oil hydraulic cylinder, it comprises: cylinder body (9), piston (5), piston rod (10), cylinder body base (1) and piston rod upper cover (14); Described cylinder body base (1) is fixed on the lower end of cylinder body (9); Described piston rod (10) is circular pipe, and described piston rod upper cover (14) is fixed on the upper end of piston rod (10); There is piston shaft (6) piston rod (10) lower end; Described piston shaft (6) is circular pipe, and piston shaft (6) is welded on the lower end of piston rod (10); Described piston (5) is circular pipe, and it is upper that the endoporus drive fit of circular pipe is sleeved on piston shaft (6), and piston shaft (6) lower end is fixing by piston (5) by nut (3), and with Cock screw (4), nut (3) is locked; Piston (5) has O RunddichtringO II (17) with the surface of contact of piston shaft (6), and the cylindrical of piston (5) is connected with cylinder body (9) with guide ring (8) by one-way sealing seal I (7); There is guide sleeve (12) described cylinder body (9) upper end, described guide sleeve (12) is bolted on cylinder body (9), guide sleeve (12) has O RunddichtringO I (15) with the surface of contact of cylinder body (9), and guide sleeve (12) endoporus is connected with piston rod (10) cylindrical by one-way sealing seal II (13); Described cylinder body (9) top arranges oil inlet and outlet (16), and high pressure oil enters cylinder body (9) inner chamber by upper oil inlet and outlet (16); Lower oil inlet and outlet (2) is set on described cylinder body base (1), the upper oil transportation hole (1-1) that makes of cylinder body base (1), high pressure oil enters piston rod (10) inner chamber by lower oil inlet and outlet (2) and oil transportation hole (1-1); It is characterized in that: at described piston rod (10) inner chamber, spacer ring (11) is set, described spacer ring (11) is multi-disc, and multi-disc spacer ring (11) is arranged on the inner hole wall of piston rod (10); Spacer ring (11) is flat circular plate, and the center of circular plate makes oil-through hole (11-1).
2. double-acting piston oil hydraulic cylinder according to claim 1, it is characterized in that: described spacer ring (11) peripheral weld is connected on the inwall of piston rod (10).
3. double-acting piston oil hydraulic cylinder according to claim 1 is characterized in that: described spacer ring (11) periphery is connected with the inwall of piston rod (10) by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320249162XU CN203321926U (en) | 2013-05-09 | 2013-05-09 | Dual-purpose piston hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320249162XU CN203321926U (en) | 2013-05-09 | 2013-05-09 | Dual-purpose piston hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321926U true CN203321926U (en) | 2013-12-04 |
Family
ID=49661281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320249162XU Expired - Fee Related CN203321926U (en) | 2013-05-09 | 2013-05-09 | Dual-purpose piston hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244502A (en) * | 2013-05-09 | 2013-08-14 | 王梅 | Double-acting piston cylinder |
-
2013
- 2013-05-09 CN CN201320249162XU patent/CN203321926U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244502A (en) * | 2013-05-09 | 2013-08-14 | 王梅 | Double-acting piston cylinder |
| CN103244502B (en) * | 2013-05-09 | 2015-12-09 | 王梅 | Double-acting piston oil hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140509 |