CN214742460U - Front cover of hydraulic oil cylinder - Google Patents
Front cover of hydraulic oil cylinder Download PDFInfo
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- CN214742460U CN214742460U CN202120870770.7U CN202120870770U CN214742460U CN 214742460 U CN214742460 U CN 214742460U CN 202120870770 U CN202120870770 U CN 202120870770U CN 214742460 U CN214742460 U CN 214742460U
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- front cover
- seal
- brass
- sealing
- piston rod
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Abstract
The utility model discloses a hydraulic cylinder protecgulum, include: a piston rod; the front cover is sleeved on the piston rod; the body is fixedly connected with the front cover, and meanwhile, the body is arranged at the upper end of the front cover and is in butt joint with the front cover; the brass overlaying layer is arranged in the front cover; and a seal for sealing action. The utility model discloses adopt in the protecgulum and weld copper technology, utilize the excellent wear resistance of brass, can avoid adopting the guide ring of width broad, save space. Need not to set up the guide ring, and then can place many sealing members in the protecgulum, improve the factor of safety of the slim hydro-cylinder of high pressure.
Description
Technical Field
The utility model relates to a hydraulic equipment technical field, in particular to hydraulic cylinder protecgulum.
Background
The thin oil cylinder is an execution element with wide application, and the figure of the thin oil cylinder can be seen in all industries of the society, particularly the die industry. The traditional thin oil cylinder is low in pressure, and the front cover is made of 45 steel and a guide ring or nodular cast iron, so that the safety coefficient and the supporting performance of the oil cylinder can be met. However, for the occasion of ultrahigh pressure (32 Mpa) and compact structure, the front cover must adopt special steel and a sealing system, so as to ensure the safety coefficient of the high-pressure thin oil cylinder. Meanwhile, the front cover and the piston rod are made of steel, so that a guide ring must be placed in the front cover to avoid direct friction, and the guide ring with the wider width will inevitably occupy the space of a sealing element, so that a reasonable sealing system cannot be arranged in a compact space, and the high-pressure thin oil cylinder has the risk of oil leakage.
Therefore, in order to save the installation space and reduce the oil leakage risk of the high-pressure thin oil cylinder, a front cover of the hydraulic oil cylinder is necessary to be provided so as to overcome the defects at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic cylinder protecgulum solves one or more among the above-mentioned prior art problem.
The utility model provides a pair of hydraulic cylinder protecgulum, include:
a piston rod;
the front cover is sleeved on the piston rod;
the body is fixedly connected with the front cover, and meanwhile, the body is arranged at the upper end of the front cover and is in butt joint with the front cover;
the brass overlaying layer is arranged in the front cover; and
a sealing member for sealing action.
In some embodiments, the front cover and the body are connected together through thread fit, and a set screw is added to prevent the front cover from being unscrewed in a rotating way.
In some embodiments, the front cover further comprises a set screw hole arranged on the front cover, and the set screw penetrates through the set screw hole to connect the front cover and the body.
In certain embodiments, the seals include a first seal, a second seal, and a third seal.
In some embodiments, the first sealing element and the second sealing element are arranged between the front cover and the piston rod, and the first sealing element can prevent dust and impurities from entering the oil cylinder, so that the cleanness of hydraulic oil is ensured, and the service life of the oil cylinder is prolonged; the second seal increases the sealing effect between the front cover and the piston rod.
In some embodiments, the number of the first sealing members is 1, the number of the second sealing members is 2, and the two second sealing members are sequentially arranged at equal intervals in the horizontal direction inside the first sealing members.
In some embodiments, a third seal is provided between the front cover and the body, thereby increasing the sealing effect between the front cover and the body.
In some embodiments, the number of passes of the braze overlay is 4.
In some embodiments, each turn of the braze overlay is alternated with 1 first seal and 2 second seals.
In certain embodiments, the brass single side thickness is 3-3.5 mm.
Has the advantages that: the application pressure range of the traditional thin oil cylinder is 8-16 Mpa, and the front cover can meet the safety coefficient and the supporting performance of the oil cylinder by using 45 steel and a guide ring or nodular cast iron. However, in the case of an ultrahigh pressure thin cylinder (>32Mpa) and a compact structure, the guide ring with a wider width in the front cover inevitably occupies the space of the sealing member, thereby reducing the safety factor of the high pressure thin cylinder. Therefore, the utility model discloses adopt in the protecgulum to weld the copper technology, utilize the excellent wear resistance of brass, can avoid adopting the guide ring of width broad, save space. Need not to set up the guide ring, and then can place many sealing members in the protecgulum, improve the factor of safety of the slim hydro-cylinder of high pressure.
Drawings
Fig. 1 is a schematic structural view of a front cover of a hydraulic cylinder according to the present invention;
fig. 2 is a left side view of the front cover of the hydraulic cylinder of the present invention;
fig. 3 is an enlarged view of a portion a of fig. 1.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
As shown in fig. 1, 2 and 3, the front cover of a hydraulic cylinder comprises:
a piston rod 4;
the front cover 6 is sleeved on the piston rod 4;
the body 5 is fixedly connected with the front cover 6, meanwhile, the body 5 is arranged at the upper end of the front cover 6 and is in butt joint with the front cover 6, the front cover 6 and the body 5 are connected together in a matched mode through threads 9, and a set screw 7 is additionally arranged to prevent the front cover 6 from rotating and loosening;
wherein: the front cover also comprises a stop screw hole 7 'arranged on the front cover 6, and the stop screw 7 passes through the stop screw hole 7' to connect the front cover 6 with the body 5;
the brass overlaying layer 8 is arranged in the front cover 6, the number of turns of the brass overlaying layer is 4, and each turn of the brass overlaying layer is alternately arranged with 1 first sealing element 1 and 2 second sealing elements 2; the thickness of the single side of the brass is 3-3.5 mm; and
a sealing member for sealing action.
The sealing elements comprise a first sealing element 1, a second sealing element 2 and a third sealing element 3;
the first sealing element 1 and the second sealing element 2 are arranged between the front cover 6 and the piston rod 4, and the first sealing element can prevent dust and impurities from entering the oil cylinder, so that the cleanness of hydraulic oil is ensured, and the service life of the oil cylinder is prolonged; the second sealing element increases the sealing effect between the front cover and the piston rod;
the number of the first sealing parts 1 is 1, the number of the second sealing parts 2 is 2, and the two second sealing parts 2 are sequentially arranged on the inner side of the first sealing part 1 at equal intervals along the horizontal direction;
the third seal 3 is provided between the front cover 6 and the body 5, thereby increasing the sealing effect between the front cover and the body.
Wherein: the single-side thickness of the brass and the range of the cylinder diameter of the hydraulic cylinder are shown in table 1.
TABLE 1
| Cylinder diameter | Single side thickness of brass |
| Ф32mm | 3mm |
| Ф40mm | 3mm |
| Ф50mm | 3.5mm |
| Ф63mm | 3.5mm |
| Ф80mm | 3.5mm |
| Ф100mm | 3.5mm |
In summary, the following steps:
the application pressure range of the traditional thin oil cylinder is 8-16 Mpa, and the front cover can meet the safety coefficient and the supporting performance of the oil cylinder by using 45 steel and a guide ring or nodular cast iron. However, in the case of an ultrahigh pressure thin cylinder (>32Mpa) and a compact structure, the guide ring with a wider width in the front cover inevitably occupies the space of the sealing member, thereby reducing the safety factor of the high pressure thin cylinder.
And the utility model provides a pair of hydraulic cylinder protecgulum possesses following advantage:
by adopting the copper welding process and utilizing the excellent wear resistance of brass, the guide ring with wider width can be avoided, and the space is saved. Need not to set up the guide ring, and then can place many sealing members in the protecgulum, improve the factor of safety of the slim hydro-cylinder of high pressure.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these should also be considered as within the scope of the present invention.
Claims (10)
1. A hydraulic cylinder protecgulum which characterized in that includes:
a piston rod (4);
the front cover (6), the said front cover (6) is set on the said piston rod (4);
the body (5) is fixedly connected with the front cover (6), and meanwhile, the body (5) is arranged at the upper end of the front cover (6) and is in butt joint with the front cover (6);
a braze overlay (8), the braze overlay (8) disposed within the front cover (6); and
a sealing member for sealing action.
2. Front cover of a hydraulic oil cylinder according to claim 1, characterized in that the front cover (6) is connected with the body (5) through screw threads (9) in a matching way, and a set screw (7) is additionally arranged to prevent the front cover (6) from being loosened in a rotating way.
3. The front cover of the hydraulic oil cylinder according to claim 2, characterized by further comprising a stop screw hole (7 ') arranged on the front cover (6), wherein the stop screw (7) passes through the stop screw hole (7') to connect the front cover (6) and the body (5).
4. Hydraulic ram front cover according to claim 1, characterised in that the seals comprise a first seal (1), a second seal (2) and a third seal (3).
5. Hydraulic ram front cover according to claim 4, characterised in that the first seal (1) and the second seal (2) are provided between the front cover (6) and the piston rod (4).
6. Hydraulic ram front cover according to claim 4, characterized in that the number of said first sealing elements (1) is 1, the number of said second sealing elements (2) is 2, two of said second sealing elements (2) are arranged in sequence at equal intervals in the horizontal direction inside said first sealing elements (1).
7. Hydraulic ram front cover according to claim 4, characterised in that the third seal (3) is provided between the front cover (6) and the body (5).
8. The hydraulic ram front cover of claim 1, wherein the number of brass butter layers is 4.
9. Hydraulic ram front cover according to claim 8, characterized in that each turn of said brass butter layer is alternated with 1 said seal (1) and 2 said seals (2).
10. The hydraulic ram front cover of claim 9, wherein the brass single side thickness is 3-3.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120870770.7U CN214742460U (en) | 2021-04-25 | 2021-04-25 | Front cover of hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120870770.7U CN214742460U (en) | 2021-04-25 | 2021-04-25 | Front cover of hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214742460U true CN214742460U (en) | 2021-11-16 |
Family
ID=78613577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120870770.7U Active CN214742460U (en) | 2021-04-25 | 2021-04-25 | Front cover of hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214742460U (en) |
-
2021
- 2021-04-25 CN CN202120870770.7U patent/CN214742460U/en active Active
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