CN212429396U - Four-pull-rod hydraulic oil cylinder - Google Patents
Four-pull-rod hydraulic oil cylinder Download PDFInfo
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- CN212429396U CN212429396U CN202021093479.5U CN202021093479U CN212429396U CN 212429396 U CN212429396 U CN 212429396U CN 202021093479 U CN202021093479 U CN 202021093479U CN 212429396 U CN212429396 U CN 212429396U
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Abstract
The utility model discloses a four pull rod hydraulic cylinder relates to hydraulic cylinder technical field. The utility model comprises a cylinder body, wherein the two ends of the cylinder body are respectively fixedly connected with a front end plate and a rear end plate through a pull rod; a piston rod is sleeved between the interior of the cylinder body and the front end plate; a through hole is formed in the center of the rear end plate; a limit ring groove is formed in the peripheral side surface of the through hole; a threaded rod is rotatably connected between the peripheral side surface of the limiting ring groove and the rear end plate and the interior of the cylinder body; the peripheral side surface of the threaded rod is in threaded connection with an extension rod; a first sealing ring is sleeved between the inner side of the limiting ring groove and the threaded rod; one side of the rear end plate, which is far away from the cylinder body, is fixedly connected with a cover plate; and a sealing end is sleeved between the cover plate and the rear end plate. The utility model discloses a rotating the threaded rod, under the limiting action of the draw runner in the cylinder body, the extension rod removes with the piston rod ejecting or return and contract to adjust hydraulic cylinder's stroke, need not to adopt extra electrical system to control, reduced the use cost of hydro-cylinder, the commonality is stronger.
Description
Technical Field
The utility model belongs to the technical field of hydraulic cylinder, especially, relate to a four pull rod hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When the reciprocating motion is realized by using the hydraulic cylinder, a speed reduction device can be omitted, no transmission gap exists, and the reciprocating motion is stable, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines, the hydraulic cylinder has various structural forms, the classification methods are also various, and the hydraulic cylinder can be divided into a pull rod, an earring, a bottom foot, a hinge shaft and the like according to the installation form.
The stroke of the existing pull rod hydraulic cylinder is often required to be adjusted due to the requirement of the movement function of equipment, but the stroke adjustment of the hydraulic cylinder is often required to be cooperatively controlled with an electrical system, a non-standard hydraulic cylinder is designed according to a specific condition, the use cost is high, the universality is poor, and the actual use requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a four pull rod hydraulic cylinder, through rotating the threaded rod, under the limiting action of the draw runner in the cylinder body, the extension rod removes with the piston rod ejecting or return and contract to adjust hydraulic cylinder's stroke, solved current hydraulic cylinder stroke and adjusted use cost height, the relatively poor problem of commonality.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a four-pull rod hydraulic oil cylinder, which comprises a cylinder body, wherein two ends of the cylinder body are respectively fixedly connected with a front end plate and a rear end plate through pull rods; a piston rod is sleeved between the interior of the cylinder body and the front end plate; a through hole is formed in the center of the rear end plate; a limiting ring groove is formed in the peripheral side face of the through hole; a threaded rod is rotatably connected between the peripheral side surface of the limiting ring groove and the rear end plate and the interior of the cylinder body; an extension rod is in threaded connection with the peripheral side surface of the threaded rod and is positioned between the rear end plate and the piston rod; a first sealing ring is sleeved between the inner side of the limiting ring groove and the threaded rod; one side of the rear end plate, which is far away from the cylinder body, is fixedly connected with a cover plate through bolts; and a sealing end is sleeved between the cover plate and the rear end plate.
Furthermore, an annular groove is formed in one end, far away from the cylinder body, of the rear end plate and located on the outer side of the through hole.
Furthermore, a limit ring matched with the limit ring groove is arranged on the periphery of one end of the threaded rod; and one end face of the threaded rod, which is close to the limiting ring, is provided with a hexagonal slotted hole.
Furthermore, first sealing lips are arranged between the outer side of the first sealing ring and the limiting ring groove in an array manner; and second sealing lips are arranged between the inner side of the first sealing ring and the limiting ring in an array manner.
Furthermore, a second sealing ring is arranged on one side, close to the rear end plate, of the sealing end head; a third sealing lip matched with the outer wall of the annular groove is arranged on the outer side of the second sealing ring; and a fourth sealing lip matched with the inner wall of the annular groove is arranged on the inner side of the second sealing ring.
Furthermore, one end of the extension rod is provided with a threaded hole matched with the threaded rod; one end of the extension rod, which is far away from the threaded hole, is provided with a plug head matched with the inner wall of the cylinder body; the peripheral side of the extension rod is provided with a sliding groove.
Furthermore, the cylinder body inner wall is close to back end plate one end array and all is equipped with the draw runner with spout matched with.
The utility model discloses following beneficial effect has:
the utility model discloses a rotating the threaded rod, under the limiting action of the draw runner in the cylinder body, the extension rod removes and returns the piston rod ejecting or contract back to adjust hydraulic cylinder's stroke, need not to adopt extra electrical system to control, reduced the use cost of hydro-cylinder, the commonality is stronger, and carry out double sealing to the hydraulic cylinder rear end under the effect of first sealing washer and sealed end, avoid the hydro-cylinder to produce the phenomenon of oil leak in the in-service use, the practicality is stronger.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a four-pull rod hydraulic cylinder of the present invention;
FIG. 2 is a cross-sectional view of a four-drawbar hydraulic cylinder;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic structural view of the rear end plate;
FIG. 5 is a schematic view of a threaded rod;
FIG. 6 is a schematic view of the extension rod;
in the drawings, the components represented by the respective reference numerals are listed below:
1-cylinder body, 2-pull rod, 3-front end plate, 4-rear end plate, 5-piston rod, 6-threaded rod, 7-extension rod, 8-first sealing ring, 9-cover plate, 10-sealing end, 101-slide bar, 401-through hole, 402-limiting ring groove, 403-ring groove, 601-limiting ring, 602-hexagonal groove hole, 701-threaded hole, 702-plug head, 703-sliding groove, 801-first sealing lip, 802-second sealing lip, 1001-second sealing ring, 1002-third sealing lip and 1003-fourth sealing lip.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-6, the utility model relates to a four-pull rod hydraulic cylinder, which comprises a cylinder body 1, wherein two ends of the cylinder body 1 are fixedly connected with a front end plate 3 and a rear end plate 4 through pull rods 2 respectively; a piston rod 5 is sleeved between the interior of the cylinder body 1 and the front end plate 3;
a through hole 401 is formed in the center of the rear end plate 4; a limiting ring groove 402 is formed on the peripheral side surface of the through hole 401; a threaded rod 6 is rotatably connected between the side surface of the periphery of the limiting ring groove 402 and the rear end plate 4 and the interior of the cylinder body 1; an extension rod 7 is in threaded connection with the circumferential side surface of the threaded rod 6 and is positioned between the rear end plate 4 and the piston rod 5;
a first sealing ring 8 is sleeved between the inner side of the limiting ring groove 402 and the threaded rod 6;
the side of the rear end plate 4, which is far away from the cylinder body 1, is fixedly connected with a cover plate 9 through bolts; a sealing end 10 is sleeved between the cover plate 9 and the rear end plate 4.
Wherein, the rear end plate 4 is provided with an annular groove 403 at one end far away from the cylinder body 1 and positioned outside the through hole 401.
Wherein, the periphery of one end of the threaded rod 6 is provided with a limit ring 601 matched with the limit ring groove 402; one end surface of the threaded rod 6 close to the limit ring 601 is provided with a hexagonal groove hole 602.
Wherein, a second sealing ring 1001 is arranged on one side of the sealing end 10 close to the rear end plate 4; a third sealing lip 1002 matched with the outer wall of the annular groove 403 is arranged on the outer side of the second sealing ring 1001; the inner side of the second sealing ring 1001 is provided with a fourth sealing lip 1003 matched with the inner wall of the annular groove 403.
Wherein, one end of the extension rod 7 is provided with a threaded hole 701 matched with the threaded rod 6; one end of the extension rod 7, which is far away from the threaded hole 701, is provided with a plug head 702 matched with the inner wall of the cylinder body 1; the peripheral side surface of the extension rod 7 is provided with a sliding groove 703.
Wherein, the inner wall of the cylinder body 1 is provided with a sliding strip 101 matched with the sliding groove 703 at one end array close to the rear end plate 4.
One specific application of this embodiment is: during stroke adjustment, take off apron 9 through the bolt, take off the sealed end 10 that will be located rear end plate 4, use hexagonal spanner to insert hexagonal slotted hole 602 internal rotation, threaded rod 6 when rotating with the screw hole 701 screw-thread fit of extension rod 7 tip, extension rod 7 week side's spout 703 and the inside draw runner 101 of cylinder body 1 mutually support for extension rod 7 extends or contracts and drive piston rod 5 and remove, when accomplishing stroke adjustment, insert the second sealing washer 1001 of sealed end 10 again in the ring channel 403 on rear end plate 4 surface and seal through hole 401, carry out the centre gripping with apron 9 through screw and rear end plate 4 interconnect to sealed end 10 and fix.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A four-pull-rod hydraulic oil cylinder comprises a cylinder body (1), wherein two ends of the cylinder body (1) are fixedly connected with a front end plate (3) and a rear end plate (4) through pull rods (2) respectively; a piston rod (5) is sleeved between the interior of the cylinder body (1) and the front end plate (3);
the method is characterized in that:
a through hole (401) is formed in the center of the rear end plate (4); a limiting ring groove (402) is formed in the peripheral side surface of the through hole (401); a threaded rod (6) is rotatably connected between the peripheral side surface of the limiting ring groove (402) and the rear end plate (4) and the interior of the cylinder body (1); an extension rod (7) is in threaded connection with the peripheral side surface of the threaded rod (6) and is positioned between the rear end plate (4) and the piston rod (5);
a first sealing ring (8) is sleeved between the inner side of the limiting ring groove (402) and the threaded rod (6);
one side of the rear end plate (4) far away from the cylinder body (1) is fixedly connected with a cover plate (9) through bolts; and a sealing end (10) is sleeved between the cover plate (9) and the rear end plate (4).
2. A four-rod hydraulic ram according to claim 1, characterised in that the rear end plate (4) is provided with an annular groove (403) at the end remote from the cylinder body (1) and outside the through-hole (401).
3. The four-pull rod hydraulic oil cylinder as claimed in claim 1, wherein a limit ring (601) matched with the limit ring groove (402) is arranged on the periphery of one end of the threaded rod (6); a hexagonal slotted hole (602) is formed in one end face, close to the limiting ring (601), of the threaded rod (6).
4. A four-pull rod hydraulic oil cylinder according to claim 3, characterized in that a first sealing lip (801) is arranged between the outer side of the first sealing ring (8) and the limiting ring groove (402); and second sealing lips (802) are arranged between the inner side of the first sealing ring (8) and the limiting ring (601) in an array manner.
5. A four-pull rod hydraulic ram according to claim 2, characterised in that a second sealing ring (1001) is provided on the side of the sealing end (10) adjacent the rear end plate (4); a third sealing lip (1002) matched with the outer wall of the annular groove (403) is arranged on the outer side of the second sealing ring (1001); and a fourth sealing lip (1003) matched with the inner wall of the annular groove (403) is arranged on the inner side of the second sealing ring (1001).
6. A four-pull rod hydraulic ram according to claim 1, characterised in that one end of the extension rod (7) is provided with a threaded hole (701) which is matched with the threaded rod (6); one end of the extension rod (7) far away from the threaded hole (701) is provided with a plug (702) matched with the inner wall of the cylinder body (1); the peripheral side surface of the extension rod (7) is provided with a sliding chute (703).
7. A four-pull rod hydraulic oil cylinder as claimed in claim 6, characterized in that the inner wall of the cylinder body (1) close to the end plate (4) is provided with a sliding strip (101) in array which is matched with the sliding groove (703).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093479.5U CN212429396U (en) | 2020-06-15 | 2020-06-15 | Four-pull-rod hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093479.5U CN212429396U (en) | 2020-06-15 | 2020-06-15 | Four-pull-rod hydraulic oil cylinder |
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| Publication Number | Publication Date |
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| CN212429396U true CN212429396U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021093479.5U Active CN212429396U (en) | 2020-06-15 | 2020-06-15 | Four-pull-rod hydraulic oil cylinder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850923A (en) * | 2022-06-20 | 2022-08-05 | 扬州鑫禾源机械有限公司 | Hydraulic telescopic device for clamp with adjustable cavity for processing slender shaft |
| CN115559960A (en) * | 2022-10-27 | 2023-01-03 | 济南夫驰科技有限公司 | Variable stroke oil cylinder |
-
2020
- 2020-06-15 CN CN202021093479.5U patent/CN212429396U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850923A (en) * | 2022-06-20 | 2022-08-05 | 扬州鑫禾源机械有限公司 | Hydraulic telescopic device for clamp with adjustable cavity for processing slender shaft |
| CN114850923B (en) * | 2022-06-20 | 2024-03-22 | 扬州鑫禾源机械有限公司 | Hydraulic telescopic device for cavity-adjustable clamp for slender shaft machining |
| CN115559960A (en) * | 2022-10-27 | 2023-01-03 | 济南夫驰科技有限公司 | Variable stroke oil cylinder |
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