CN219603144U - Welding type high-sealing vertical jack - Google Patents
Welding type high-sealing vertical jack Download PDFInfo
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- CN219603144U CN219603144U CN202223397430.0U CN202223397430U CN219603144U CN 219603144 U CN219603144 U CN 219603144U CN 202223397430 U CN202223397430 U CN 202223397430U CN 219603144 U CN219603144 U CN 219603144U
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Abstract
The utility model discloses a welded high-sealing vertical jack which comprises a base, an outer sleeve, an oil cylinder, a piston head, an adjusting screw and a jacking pump, wherein the lower ends of the outer sleeve, the oil cylinder and the jacking pump are welded on the base, and the upper end of the outer sleeve is welded on the outer wall of the upper end of the oil cylinder. On the basis of the existing hydraulic vertical jack, the static sealing parts of all parts are replaced by adopting a welding process, so that loosening of threaded connection can be avoided, ageing of static sealing elements can be avoided, parts are reduced, and assembly precision required by all assembly parts is reduced; in a comprehensive view, the sealing performance of the hydraulic system is improved, and faults caused by hydraulic oil leakage are reduced.
Description
Technical Field
The utility model relates to the technical field of jacks, in particular to a welded high-sealing vertical jack.
Background
The vertical hydraulic jack is mainly used for lifting heavy objects, and is widely used for lifting vehicles. The structure of a typical vertical hydraulic jack is shown in fig. 1, and the structure of the typical vertical hydraulic jack consists of a base 1, a jacket 2, an oil cylinder 3, a piston 4, a piston head 5, an adjusting screw 6, a top cap 7 and a jacking pump 8. The lower ends of the oil cylinder 3 and the jacking pump 7 are connected and fixed with the base 1 through threads, and are matched with an iron pad or a nylon pad to realize sealing; the upper end of the outer sleeve 2 and the upper end of the oil cylinder 3 are integrated through a top cap 7, and the top cap 7 is fixedly connected with the oil cylinder 3 through threads and presses the outer sleeve 2 downwards; the upper end and the lower end of the outer sleeve 2 are respectively provided with nylon or rubber sealing rings to realize sealing. A dynamic seal 9 is also provided between the top cap 7 and the piston 4.
In the vertical hydraulic jack, the oil cylinder 3 and the jacking pump 8 are internally provided with high-pressure oil, the sealing requirement is highest, and the upper end and the lower end of the outer sleeve 2 are of a compression structure and are not in threaded connection, so that hydraulic oil is easy to leak everywhere. In addition, the dynamic seal 9 is installed in the ring groove in the top cap 7, and the abrasion is required to be replaced by a special tool, so that the operation is troublesome.
Disclosure of Invention
In order to improve the sealing performance of the vertical jack, the utility model provides a welded high-sealing vertical jack.
The technical scheme adopted by the utility model is as follows: the utility model provides a vertical jack of welded high seal, includes base, overcoat, hydro-cylinder, piston head, adjusting screw and jack-up pump, the overcoat the hydro-cylinder the piston reaches adjusting screw is by outside-in concentric setting, the piston head is installed the piston lower extreme, the overcoat the hydro-cylinder with the lower extreme welding of jack-up pump is in on the base, the upper end welding of overcoat is in on the upper end outer wall of hydro-cylinder.
Preferably, the base is provided with positioning holes corresponding to the outer sleeve, the oil cylinder and the jacking pump.
Preferably, the base, the outer sleeve, the oil cylinder and the jacking pump are welded by single-sided external fillet welding.
Preferably, a flaring part is arranged at the upper end of the oil cylinder, and a gap between the flaring part and the piston is used for installing a dynamic sealing containing cavity.
Preferably, an annular groove is arranged at the pipe orifice of the flaring part and used for installing the snap spring.
Preferably, the dynamic seal comprises an O-ring at the middle position and nylon check rings at the upper side and the lower side.
The utility model has the following beneficial effects: on the basis of the existing hydraulic vertical jack, the static sealing parts of all parts are replaced by adopting a welding process, so that loosening of threaded connection can be avoided, ageing of static sealing elements can be avoided, parts are reduced, and assembly precision required by all assembly parts is reduced; in a comprehensive view, the sealing performance of the hydraulic system is improved, and faults caused by hydraulic oil leakage are reduced.
Drawings
Fig. 1 is a schematic cross-sectional view of a conventional hydraulic vertical jack.
Fig. 2 is a schematic cross-sectional view of an embodiment of the present utility model.
Fig. 3 is an enlarged schematic view at a in an embodiment of the present utility model.
The hydraulic pump comprises a base 1, an outer sleeve 2, an oil cylinder 3, a flaring portion 301, a piston 4, a piston head 5, an adjusting screw 6, a top cap 7, a jacking pump 8, a dynamic seal 9, an O-shaped ring 901, a nylon retainer ring 902 and a clamp spring 10.
Detailed Description
The utility model will be further described with reference to examples and drawings.
In the embodiment, as shown in fig. 2 and 3, the welding type high-sealing vertical jack comprises a base 1, an outer sleeve 2, an oil cylinder 3, a piston 4, a piston head 5, an adjusting screw 6 and a jacking pump 8, wherein the outer sleeve 2, the oil cylinder 3, the piston 4 and the adjusting screw 6 are concentrically arranged from outside to inside, the piston head 5 is arranged at the lower end of the piston 4, the lower ends of the outer sleeve 2, the oil cylinder 3 and the jacking pump 8 are welded on the base 1, and the upper end of the outer sleeve 2 is welded on the outer wall of the upper end of the oil cylinder 3. According to the embodiment, on the basis of the existing hydraulic vertical jack, all static sealing parts are replaced by adopting a welding process, so that loosening of threaded connection can be avoided, ageing of static sealing parts can be avoided, parts (such as the static sealing parts and the top cap 7) are reduced, and the assembly precision required by all assembly parts is reduced; in a comprehensive view, the sealing performance of the hydraulic system is improved, and faults caused by hydraulic oil leakage are reduced.
In the embodiment, as shown in fig. 2, positioning holes are formed in the base 1 corresponding to the outer sleeve 2, the oil cylinder 3 and the jacking pump 8. The diameter of each positioning hole is equivalent to the diameter of each matching part, so that the accuracy of the mounting positions of the outer sleeve 2, the oil cylinder 3 and the jacking pump 8 is ensured.
In the embodiment, as shown in fig. 2, the base 1, the outer sleeve 2, the oil cylinder 3 and the jacking pump 8 are welded by single-sided external fillet welding. The welding process is simple, the width of the welding seam of the outer sleeve 2 can be 0.8 times of the wall thickness, and the width of the welding seam of the oil cylinder 3 and the jacking pump 8 can be 1.0 times of the wall thickness, so that the requirements of strength and pressure can be met.
In the embodiment, as shown in fig. 2 and 3, the upper end of the oil cylinder 3 is provided with a flaring portion 301, a gap between the flaring portion 301 and the piston 4 is used for installing a cavity of the dynamic seal 9, and a pipe orifice of the flaring portion 301 is provided with a ring groove for installing the clamp spring 10. The structure has the greatest advantages of being convenient for the installation and replacement of the dynamic seal 9, only needing one clamp spring clamp, needing no special tools and being convenient for operation. In addition, the expansion part 301 can reduce the bending part of the upper end of the outer sleeve 2, thereby reducing the processing and forming difficulty of the outer sleeve 2. In addition, a threaded annular sealing baffle can be used instead of the snap spring 10.
In an embodiment, as shown in fig. 3, the dynamic seal 9 includes an O-ring 901 in the middle position and nylon retainers 902 on the upper and lower sides. The O-shaped ring 901 is used as a main seal, the nylon retainer ring 902 plays a role in auxiliary seal, and the whole sealing performance is good. And the check ring 902 also protects the O-shaped ring 901 from damage.
It is apparent that the above examples of the present utility model are merely illustrative of the present utility model and are not limiting of the embodiments of the present utility model. Other obvious variations or modifications which are extended by the spirit of the present utility model are within the scope of the present utility model.
Claims (3)
1. The utility model provides a vertical jack of welding type high seal, includes base (1), overcoat (2), hydro-cylinder (3), piston (4), piston head (5), adjusting screw (6) and jack-up pump (8), overcoat (2) hydro-cylinder (3) piston (4) with adjusting screw (6) are by outside-in concentric setting, piston head (5) are installed piston (4) lower extreme, its characterized in that: the lower ends of the outer sleeve (2), the oil cylinder (3) and the jacking pump (8) are welded on the base (1), and the upper end of the outer sleeve (2) is welded on the outer wall of the upper end of the oil cylinder (3);
the upper end of the oil cylinder (3) is provided with a flaring part (301), and a gap between the flaring part (301) and the piston (4) is used for installing a cavity of a dynamic seal (9);
the dynamic seal (9) comprises an O-shaped ring (901) at the middle position and nylon check rings (902) at the upper side and the lower side;
the base (1) with overcoat (2), hydro-cylinder (3) the climbing pump (8) adopts single face external angle welding, overcoat (2) welding seam width adopts 0.8 times of wall thickness, hydro-cylinder (3) with climbing pump (8) welding seam width adopts 1.0 times of wall thickness.
2. The welded high-sealing vertical jack according to claim 1, wherein the base (1) is provided with positioning holes corresponding to the jacket (2), the oil cylinder (3) and the jacking pump (8).
3. The welded high-sealing vertical jack according to claim 1, wherein a ring groove is arranged at the pipe orifice of the flaring part (301) for installing the snap spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223397430.0U CN219603144U (en) | 2022-12-19 | 2022-12-19 | Welding type high-sealing vertical jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223397430.0U CN219603144U (en) | 2022-12-19 | 2022-12-19 | Welding type high-sealing vertical jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219603144U true CN219603144U (en) | 2023-08-29 |
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ID=87740702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223397430.0U Active CN219603144U (en) | 2022-12-19 | 2022-12-19 | Welding type high-sealing vertical jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219603144U (en) |
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2022
- 2022-12-19 CN CN202223397430.0U patent/CN219603144U/en active Active
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