CN217055797U - Sandwich type internal locking oil cylinder - Google Patents
Sandwich type internal locking oil cylinder Download PDFInfo
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- CN217055797U CN217055797U CN202220950071.8U CN202220950071U CN217055797U CN 217055797 U CN217055797 U CN 217055797U CN 202220950071 U CN202220950071 U CN 202220950071U CN 217055797 U CN217055797 U CN 217055797U
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Abstract
The utility model belongs to the technical field of the hydro-cylinder technique and specifically relates to a locking hydro-cylinder in intermediate layer formula. The cylinder barrel is divided into an outer cylinder barrel and an inner cylinder barrel, the inner cylinder barrel is sleeved in the outer cylinder barrel, a gap is formed between the outer cylinder barrel and the inner cylinder barrel, and a flange is arranged on the outer side of the outer cylinder barrel; interior cylinder adopts intermediate layer formula setting, divide into cylinder and the interior cylinder of second in first, the cylinder cover is established on the cylinder in the second in first, and the both ends concatenation of cylinder and the interior cylinder of second forms in first, has the clearance between cylinder and the interior cylinder of second in first. The problem of the mounted position of flange is solved, and the position of flange no longer is limited to the cylinder tip, can design in the cylinder optional position, greatly reduced the design degree of difficulty of customer's structure.
Description
Technical Field
The utility model belongs to the technical field of the hydro-cylinder technique and specifically relates to a locking hydro-cylinder in intermediate layer formula.
Background
The principle of locking the cylinder in any position is that a locking expansion sleeve is arranged in the cylinder, and the locking sleeve and the cylinder barrel form strong positive pressure by interference fit so as to embrace the locking sleeve, thereby limiting the movement of the piston rod. The cylinder barrel of the oil cylinder is in a thin-wall form, elastic deformation can be conveniently generated after oil pressure acts on the cylinder barrel, the oil pressure reaches the contact position of the locking sleeve and the cylinder barrel through a pipeline in the middle of the piston rod, the cylinder barrel can release locking of the piston rod after being expanded and deformed along the radial direction and generating a gap between the expansion sleeve and the cylinder barrel, and the mounting positions of flanges at the cylinder barrel of the locking cylinder in any position in the prior art are all on the end face of the cylinder barrel, so that the mounting form of the oil cylinder is limited, and certain difficulty is caused to structural part design of customers.
The mounting flange of prior art scheme cylinder department can only design at the terminal surface, and installation use adaptability is not strong, this because in hydro-cylinder stroke range, the cylinder needs can produce elastic deformation evenly, if deformation range inner wall thickness inequality or have other structures, the cylinder warp just to be difficult to evenly, and the cylinder can block the locking cover that rises promptly, influences the normal use of locking jar.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the sandwich type inner locking oil cylinder solves the problem that a conventional inner locking cylinder in any position can not be designed at other positions of a cylinder barrel because a flange can only be designed at the end part of the cylinder barrel due to structural limitation, so that the installation position of the flange is not limited any more, and the application range of the inner locking oil cylinder in any position is greatly enlarged.
The utility model provides a technical scheme that its technical problem adopted is: a sandwich type internal locking oil cylinder comprises a cylinder barrel, a cylinder bottom and a cylinder head, wherein a piston assembly is installed in an inner cavity of the cylinder barrel, the cylinder barrel is divided into an outer cylinder barrel and an inner cylinder barrel, the inner cylinder barrel is sleeved in the outer cylinder barrel, a gap is formed between the outer cylinder barrel and the inner cylinder barrel, and a flange is installed on the outer side of the outer cylinder barrel; interior cylinder adopts intermediate layer formula setting, divide into cylinder and the interior cylinder of second in first, the cylinder cover is established on the cylinder in the second in first, and the both ends concatenation of cylinder and the interior cylinder of second forms in first, has the clearance between cylinder and the interior cylinder of second in first.
Further, the flange is installed on the outer cylinder barrel through welding or round pin axle.
Furthermore, the two ends of the first inner cylinder barrel and the second inner cylinder barrel are welded together
Furthermore, a cylinder head is installed at one end of the second inner cylinder barrel, a guide sleeve is installed at the other end of the second inner cylinder barrel, a piston assembly is installed in an inner cavity of the second inner cylinder barrel, and the piston assembly divides the inner cavity of the inner cylinder barrel into a rod cavity and a rodless cavity.
Further, the piston assembly comprises a piston rod, a locking expansion sleeve, a first piston and a second piston are sleeved at the end part, close to the cylinder head, of the piston rod, the locking expansion sleeve is located between the first piston and the second piston, and an unlocking oil outlet is formed in the side wall of the locking expansion sleeve; still the cover is equipped with the ring on the piston rod, and the ring is close to first piston setting, has seted up on the rampart of ring has the pole oil outlet.
Further, the piston rod is internally provided with an unlocking cavity oil passing hole, a rodless cavity oil passing hole and a rod cavity oil passing hole, the cylinder bottom is provided with an unlocking cavity oil passing hole, a rodless cavity oil passing hole and a rod cavity oil passing hole, one end of the unlocking cavity oil passing hole is communicated with the unlocking oil outlet hole, the other end of the unlocking cavity oil passing hole is communicated with the unlocking cavity oil passing hole in an alignment mode, the connecting end face is provided with a sealing ring, one end of the rodless cavity oil passing hole is communicated with the rodless cavity, the other end of the rodless cavity oil passing hole is communicated with the rodless cavity in an alignment mode, the connecting end face is provided with the sealing ring, one end of the rod cavity oil passing hole is communicated with the rod oil outlet hole, the other end of the rod cavity oil passing hole is communicated with the rod cavity oil passing hole in an alignment mode, and the connecting end face is provided with the sealing ring.
Furthermore, a connecting plate is arranged on the rod body of the piston rod close to the cylinder bottom, the cylinder bottom is arranged on the connecting plate through screws, and the cylinder bottom and the outer cylinder barrel are arranged through screws.
The beneficial effects of the utility model are that: the utility model provides a mounted position problem of flange, the position of flange no longer is limited to the cylinder tip, can design at the cylinder optional position, greatly reduced the design degree of difficulty of customer's structure.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view in another direction of the present invention;
in the figure: 1. the cylinder comprises an outer cylinder barrel, 2 an inner cylinder barrel, 3 a guide sleeve, 4 a cylinder bottom, 5 a locking expansion sleeve, 6 a first piston, 7 a second piston, 8 a connecting plate, 9 a flange, 10 a piston rod, 11 an unlocking cavity oil passing hole, 12 a rodless cavity oil passing hole, 13 a rod cavity oil passing hole, 14 an unlocking cavity oil passing hole, 15 a rodless cavity oil passing hole, 16 a rod cavity oil passing hole, 17 a sealing ring, 18 a cylinder head, 21 a first inner cylinder barrel, 22 a second inner cylinder barrel, 23 an unlocking oil outlet, 24 a ring piece and 25 a rod oil outlet.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-2, the sandwich type internal locking oil cylinder integrally adopts a flip structure and comprises a cylinder barrel, a cylinder bottom 4 and a cylinder head 18, wherein a piston assembly is installed in an inner cavity of the cylinder barrel, the cylinder barrel is divided into an outer cylinder barrel 1 and an inner cylinder barrel 2, the inner cylinder barrel 2 is sleeved in the outer cylinder barrel 1, a connecting plate 8 is installed on a rod body of a piston rod 10, which is close to the cylinder bottom 4, the cylinder bottom 4 is installed on the connecting plate 8 through screws, the cylinder bottom 4 and the outer cylinder barrel 1 are installed through screws, a gap is formed between the outer cylinder barrel 1 and the inner cylinder barrel 2, a flange 9 is installed on the outer side of the outer cylinder barrel 1, the flange 9 is installed on the outer cylinder barrel 1 through welding or pin shafts or other structural forms, and the position of the flange 9 can be adjusted according to the needs of customers;
the inner cylinder barrel 2 is arranged in a sandwich mode and is divided into a first inner cylinder barrel 21 and a second inner cylinder barrel 22, the first inner cylinder barrel 21 is sleeved on the second inner cylinder barrel 22, two ends of the first inner cylinder barrel 21 and two ends of the second inner cylinder barrel 22 are welded in a splicing mode, a gap is formed between the inner diameter of the first inner cylinder barrel 21 and the outer diameter of the second inner cylinder barrel 22, and the gap is used for elastic deformation of the second inner cylinder barrel 22, so that when the oil pressure is unlocked, the inner cylinder barrel can generate elastic deformation; meanwhile, the excircle of the second inner cylinder 22 has no influence of other structural parts in the stroke range, so that the elastic deformation is uniform, and the oil cylinder can be unlocked smoothly. The position of the mounting flange 9 of the oil cylinder is not limited, and the unlocking of the inner cylinder barrel 2 can not be influenced only by adjusting the outer cylinder barrel 1.
The cylinder head 18 is installed at one end of the second inner cylinder 22, the guide sleeve 3 is installed at the other end of the second inner cylinder 22, a piston assembly is installed in an inner cavity of the second inner cylinder 22, and the piston assembly divides the inner cavity of the inner cylinder 2 into a rod cavity and a rodless cavity.
In addition, the piston assembly comprises a piston rod 10, a locking expansion sleeve 5, a first piston 6 and a second piston 7 are sleeved at the end part, close to the cylinder head 18, of the piston rod 10, the locking expansion sleeve 5 is located between the first piston 6 and the second piston 7, and an unlocking oil outlet 23 is formed in the side wall of the locking expansion sleeve 5;
the piston rod 10 is further sleeved with a ring piece 24, the ring piece 24 is arranged close to the first piston 6, and a rod oil outlet 25 is formed in the ring wall of the ring piece 24.
An unlocking cavity oil passing hole 11, a rodless cavity oil passing hole 12 and a rod cavity oil passing hole 13 are formed in the piston rod 10, an unlocking cavity oil passing hole 14, a rodless cavity oil passing hole 15 and a rod cavity oil passing hole 16 are formed in the cylinder bottom 4, one end of the unlocking cavity oil passing hole 11 is communicated with an unlocking oil outlet hole 23, the other end of the unlocking cavity oil passing hole is aligned with the unlocking cavity oil passing hole 14 and communicated with the unlocking cavity oil passing hole, and a sealing ring 17 is arranged at the connecting end face of the unlocking cavity oil passing hole and cannot generate oil mixing; one end of the rodless cavity oil passing hole 12 is communicated with the rodless cavity, the other end of the rodless cavity oil passing hole is aligned and communicated with the rodless cavity oil passing hole 15, and a sealing ring 17 is arranged at the connecting end face, so that oil mixing cannot occur; one end of the rod cavity oil passing hole 13 is communicated with the rod oil outlet hole 25, the other end of the rod cavity oil passing hole is communicated with the rod cavity oil passing hole 16 in an aligning manner, and the sealing ring 17 is arranged at the connecting end face, so that oil leakage cannot occur.
The working process comprises the following steps:
in an unlocking state, oil enters through the unlocking cavity oil passing hole 14, flows into the unlocking cavity oil passing hole 11, and finally flows into a space between the second inner cylinder 22 and the locking expansion sleeve 5 through the unlocking oil outlet hole 23, and the inner wall of the second inner cylinder 22 is thin and can generate elastic deformation, so that the second inner cylinder 22 is expanded, the piston assembly can move left and right in the second inner cylinder 22, and unlocking is completed;
in the locking state, the oil is not continuously fed into the oil through port 14 of the unlocking cavity, and at the moment, the second inner cylinder 22 rebounds slowly to hold the piston assembly tightly, so that the locking is completed.
When the oil cylinder is in the unlocking state, oil enters the oil passing port 16 of the rod cavity, flows into the oil passing hole 13 of the rod cavity, and finally flows into the rod cavity through the rod oil outlet hole 25, so that the inner cylinder barrel 2 is driven to move rightwards, and the oil cylinder is retracted.
When the oil cylinder is in an unlocking state, oil enters the oil inlet 15 through the rodless cavity, flows into the rodless cavity oil passing hole 12 and finally flows into the rodless cavity, so that the inner cylinder barrel 2 is driven to move leftwards, and the oil cylinder is stretched out.
While the foregoing description describes only certain embodiments of the invention, it is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a locking hydro-cylinder in intermediate layer formula, includes cylinder, cylinder bottom (4) and cylinder head (18), the inner chamber of cylinder in install piston assembly, its characterized in that: the cylinder barrel is divided into an outer cylinder barrel (1) and an inner cylinder barrel (2), the inner cylinder barrel (2) is sleeved in the outer cylinder barrel (1), a gap is formed between the outer cylinder barrel (1) and the inner cylinder barrel (2), and a flange (9) is installed on the outer side of the outer cylinder barrel (1);
interior cylinder (2) adopt the intermediate layer formula to set up, divide into cylinder (22) in first interior cylinder (21) and the second, cylinder (22) in the second is established to first interior cylinder (21) cover, and the both ends concatenation of cylinder (22) forms in first interior cylinder (21) and the second, has the clearance between cylinder (22) in first interior cylinder (21) and the second.
2. The sandwich type internal lock cylinder of claim 1, wherein: the flange (9) is arranged on the outer cylinder barrel (1) through welding or a pin shaft.
3. The sandwich type internal lock cylinder of claim 1, wherein: the two ends of the first inner cylinder barrel (21) and the second inner cylinder barrel (22) are welded together.
4. The sandwich type internal locking cylinder of claim 1, wherein: a cylinder head (18) is installed at one end of the second inner cylinder barrel (22), a guide sleeve (3) is installed at the other end of the second inner cylinder barrel (22), a piston assembly is installed in an inner cavity of the second inner cylinder barrel (22), and the piston assembly divides the inner cavity of the inner cylinder barrel (2) into a rod cavity and a rodless cavity.
5. The sandwich type internal lock cylinder of claim 4, wherein: the piston assembly comprises a piston rod (10), a locking expansion sleeve (5), a first piston (6) and a second piston (7) are sleeved at the end part, close to the cylinder head (18), of the piston rod (10), the locking expansion sleeve (5) is located between the first piston (6) and the second piston (7), and an unlocking oil outlet hole (23) is formed in the side wall of the locking expansion sleeve (5);
the piston rod (10) is further sleeved with a ring piece (24), the ring piece (24) is arranged close to the first piston (6), and a rod oil outlet (25) is formed in the ring wall of the ring piece (24).
6. The sandwich type internal lock cylinder of claim 5, wherein: an unlocking cavity oil passing hole (11), a rodless cavity oil passing hole (12) and a rod cavity oil passing hole (13) are formed in the piston rod (10), an unlocking cavity oil passing hole (14), a rodless cavity oil passing hole (15) and a rod cavity oil passing hole (16) are formed in the cylinder bottom (4),
one end of the unlocking cavity oil passing hole (11) is communicated with the unlocking oil outlet hole (23), the other end of the unlocking cavity oil passing hole is communicated with the unlocking cavity oil passing hole (14) in an aligning way, a sealing ring (17) is arranged at the connecting end surface,
one end of the rodless cavity oil passing hole (12) is communicated with the rodless cavity, the other end of the rodless cavity oil passing hole is communicated with the rodless cavity oil passing hole (15) in an aligning way,
one end of the rod cavity oil passing hole (13) is communicated with the rod oil outlet hole (25), and the other end of the rod cavity oil passing hole is aligned with and communicated with the rod cavity oil passing hole (16).
7. The sandwich type internal lock cylinder of claim 5, wherein: a connecting plate (8) is arranged on a rod body of the piston rod (10) close to the cylinder bottom (4), the cylinder bottom (4) is arranged on the connecting plate (8) through screws, and the cylinder bottom (4) and the outer cylinder barrel (1) are arranged through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220950071.8U CN217055797U (en) | 2022-04-22 | 2022-04-22 | Sandwich type internal locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220950071.8U CN217055797U (en) | 2022-04-22 | 2022-04-22 | Sandwich type internal locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217055797U true CN217055797U (en) | 2022-07-26 |
Family
ID=82471913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220950071.8U Active CN217055797U (en) | 2022-04-22 | 2022-04-22 | Sandwich type internal locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217055797U (en) |
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2022
- 2022-04-22 CN CN202220950071.8U patent/CN217055797U/en active Active
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