CN203223438U - Piston type single-action hydraulic cylinder - Google Patents
Piston type single-action hydraulic cylinder Download PDFInfo
- Publication number
- CN203223438U CN203223438U CN 201320185867 CN201320185867U CN203223438U CN 203223438 U CN203223438 U CN 203223438U CN 201320185867 CN201320185867 CN 201320185867 CN 201320185867 U CN201320185867 U CN 201320185867U CN 203223438 U CN203223438 U CN 203223438U
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- piston
- cylinder
- valve
- valve rod
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Abstract
Provided is a piston type single-action hydraulic cylinder. The piston type single-action hydraulic cylinder is composed of a cylinder bottom welding-on part, a cylinder cover, a piston, a piston rod, a cylinder barrel, a piston sealing assembly, a piston rod sealing assembly, a limiting valve and a buffering valve. The piston type single-action hydraulic cylinder is characterized in that the lower end of the cylinder barrel is welded with the cylinder bottom welding-on part, the upper end of the cylinder barrel is connected with the cylinder cover, the piston rod penetrates through the cylinder cover, and is connected with the piston in the cylinder barrel, the piston rod sealing assembly is installed between the piston rod and the cylinder cover, the piston sealing assembly is installed between the cylinder barrel and the piston, the limiting valve is arranged the upward face of the piston, and the buffering valve is arranged on the bottom face of the piston. The piston type single-action hydraulic cylinder has the advantages that the design is reasonable, safety and stability are achieved, and due to the fact that the limiting valve and the buffering valve are arranged on the piston rod, stable operation of the hydraulic cylinder is ensured, stable descent of the piston type single-action hydraulic cylinder can be ensured, the fact that impact between the piston and the cylinder cover and impact between the piston and the cylinder bottom cannot happen is ensured, and the buffering effect is achieved.
Description
Technical field
The utility model belongs to a kind of hydraulic means, and in particular to a kind of piston type single-action hydraulic cylinder.
Background technology
During dumper tumbles compartment, with the raising and lowering of hydraulic cylinder piston, during stroke end, piston is susceptible to contact or clashes into cylinder cap, cylinder bottom, easily cause cylinder head bolts phenomenon of rupture, if the intensity of increase stud and cylinder bottom needs to increase the size and manufacturing cost of part, thus, devise a kind of piston-type hydraulic cylinder of snubber contact cylinder bottom when being clashed into cylinder cap when piston can be avoided to rise, fallen.
The content of the invention
In order to solve hydraulic cylinder in the prior art, piston comes in contact or clashes into cylinder cap, cylinder bottom in the course of the work, the defect collided with frame during cylinder head bolts fracture, compartment return is easily caused, the utility model provides a kind of piston type single-action hydraulic cylinder.
The utility model is achieved through the following technical solutions: a kind of piston type single-action hydraulic cylinder, by cylinder bottom soldering, cylinder cap, piston, piston rod, cylinder barrel, piston seal component, piston rod seal pack, limit valve, trimmer valve is constituted, it is characterized in that: welded with cylinder bottom soldering cylinder barrel lower end, cylinder barrel upper end is connected with cylinder cap, piston rod is connected through cylinder cap with the piston in cylinder barrel, piston rod seal pack is installed between piston rod and cylinder cap, piston seal component is installed between cylinder barrel and piston, in piston, limit valve is upward set, in the bottom surface of piston, trimmer valve is set, described limit valve: is made up of the valve rod hole on spacing valve rod, spring, spring base and piston, spacing valve rod, spring and spring base are installed in the valve rod hole of piston, three faces are milled with the face of cylinder of spacing valve rod upper end, bottom is provided with sealing cone, the valve rod hole being engaged with spacing valve rod is provided with sealing chamfering, and the spacing valve rod conical surface is sealed with the chamfering of spacing valve rod hole and coordinated during piston movement, described trimmer valve: is made up of throttle valve lever, spring, spring base, is arranged in the centromere stream valve rod hole of piston bottom surface, there is throttling channel on throttle valve lever, during utility model works, piston is in normal operation, in hydraulic system pressure and spring force effect lower limit valve rod conical surface seal, the up thrust output of hydraulic cylinder, when piston movement to stroke end, spacing valve rod on piston starts retraction in the presence of the cylinder cap of upper end, the spacing valve rod conical surface leaves piston seal face and no longer seals, the hole communicated with piston by three flat faces on spacing valve rod hole, upper and lower two chamber of hydraulic cylinder is caused to communicate, pressure is equal, piston stop motion, so as to serve position-limiting action, when piston falls after rise under external force, spacing valve rod departs from cylinder cap contact, in the presence of cavity of resorption resistance and spring force, the conical surface of spacing valve rod is resealed with the cooperation of spacing valve rod hole, cavity of resorption oil is by buffering valve module oil return, when spring base contacts bottom, spring starts compression, oil mass flows into fuel tank and has started buffering by the throttling channel of throttle valve lever, as the throttling channel sectional area on throttle valve lever is gradually reduced, capacity of returns slowly reduces, until buffering work is completed, ensure that hydraulic cylinder steadily declines, ensure that piston and cylinder cap, cylinder bottom will not clash into, so as to complete cushioning effect.
The beneficial effects of the utility model are: reasonable in design, safety and steady, ensure that piston and cylinder cap, cylinder bottom will not clash into using limit valve, trimmer valve, are mainly used in vehicle cargo self-unloading, and other need the occasion of piston type single-action hydraulic cylinder.
Brief description of the drawings
The utility model is described further with reference to the accompanying drawings and detailed description.
Accompanying drawing is structural representation of the present utility model.
In accompanying drawing: 1, piston rod; 2nd, piston rod seal pack; 3rd, cylinder cap; 4th, cylinder barrel; 5th, piston seal component; 6th, cylinder bottom soldering; 7th, trimmer valve; 8th, piston; 9th, limit valve.
Specific embodiment
A kind of piston type single-action hydraulic cylinder as shown in drawings, it is made up of cylinder bottom soldering 6, cylinder cap 3, piston 8, piston rod 1, cylinder barrel 4, piston seal component 5, piston rod seal pack 2, limit valve 9, trimmer valve 7, welded with cylinder bottom soldering 6 lower end of cylinder barrel 4, the upper end of cylinder barrel 4 is connected with cylinder cap 3, piston rod 1 is connected through cylinder cap 3 with the piston 8 in cylinder barrel 4, piston rod seal pack 2 is installed between piston rod 1 and cylinder cap 3, piston seal component 5 is installed between cylinder barrel 4 and piston 8, limit valve 9 is upward set in piston 8, trimmer valve 7 is set in the bottom surface of piston 8, spacing valve rod, spring and spring base are installed in the valve rod hole of piston 8, three faces are milled with the face of cylinder of spacing valve rod upper end, bottom is provided with sealing cone, the valve rod hole being engaged with spacing valve rod is provided with sealing chamfering, and the spacing valve rod conical surface is sealed with the chamfering of spacing valve rod hole and coordinated when piston 4 is moved, throttle valve lever, spring, spring base are arranged in the bottom center's choke valve rod aperture of piston 4, there is throttling channel on throttle valve lever, piston 4 is in normal operation, in hydraulic system pressure and spring force effect lower limit valve rod conical surface seal, the up thrust output of hydraulic cylinder, when piston 4 moves to stroke end, spacing valve rod on piston 4 starts retraction in the presence of upper end cylinder cap 3, the spacing valve rod conical surface leaves the sealing surface of piston 4 and no longer seals, the hole communicated with piston by three flat faces on spacing valve rod hole, upper and lower two chamber of hydraulic cylinder is caused to communicate, pressure is equal, piston stop motion, so as to serve position-limiting action, when piston 4 falls after rise under external force, spacing valve rod departs from cylinder cap 3 and contacts, in the presence of cavity of resorption resistance and spring force, the conical surface of spacing valve rod is resealed with the cooperation of spacing valve rod hole, cavity of resorption oil passes through trimmer valve oil return, when spring base contacts bottom, spring starts compression, oil mass flows into fuel tank and has started buffering by the throttling channel of throttle valve lever, as the throttling channel sectional area on throttle valve lever is gradually reduced, capacity of returns slowly reduces, until buffering work is completed, so as to ensure that hydraulic cylinder steadily declines, ensure that piston 8 and cylinder cap 3, cylinder bottom will not clash into, so as to complete cushioning effect.
Claims (3)
1. a kind of piston type single-action hydraulic cylinder, it is made up of cylinder bottom soldering, cylinder cap, piston, piston rod, cylinder barrel, piston seal component, piston rod seal pack, limit valve, trimmer valve, it is characterized in that: welded with cylinder bottom soldering cylinder barrel lower end, cylinder barrel upper end is connected with cylinder cap, piston rod is connected through cylinder cap with the piston in cylinder barrel, piston rod seal pack is installed between piston rod and cylinder cap, piston seal component is installed between cylinder barrel and piston, limit valve is upward set in piston, trimmer valve is set in the bottom surface of piston.
2. a kind of piston type single-action hydraulic cylinder according to claim 1, it is characterized in that: described limit valve: is made up of the valve rod hole on spacing valve rod, spring, spring base and piston, spacing valve rod, spring and spring base are installed in the valve rod hole of piston, three faces are milled with the face of cylinder of spacing valve rod upper end, bottom is provided with sealing cone, the valve rod hole being engaged with spacing valve rod is provided with sealing chamfering, and the spacing valve rod conical surface is sealed with the chamfering of spacing valve rod hole and coordinated during piston movement.
3. a kind of piston type single-action hydraulic cylinder according to claim 1, it is characterised in that: described trimmer valve: is made up of throttle valve lever, spring, spring base, is arranged in the centromere stream valve rod hole of piston bottom surface, there is throttling channel on throttle valve lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185867 CN203223438U (en) | 2013-03-22 | 2013-03-22 | Piston type single-action hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185867 CN203223438U (en) | 2013-03-22 | 2013-03-22 | Piston type single-action hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223438U true CN203223438U (en) | 2013-10-02 |
Family
ID=49250442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320185867 Expired - Fee Related CN203223438U (en) | 2013-03-22 | 2013-03-22 | Piston type single-action hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223438U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615432A (en) * | 2013-12-13 | 2014-03-05 | 蚌埠液力机械有限公司 | Buffering structure for forklift lifting oil cylinder |
| CN106194884A (en) * | 2016-08-26 | 2016-12-07 | 汽解放柳州特种汽车有限公司 | It is a kind of without internal leakage is pushed up Tipper Lifting oil cylinder |
| CN109458376A (en) * | 2018-12-11 | 2019-03-12 | 山东弘发兴凯实业股份有限公司 | A kind of hydraulic abdomen elevating ram |
-
2013
- 2013-03-22 CN CN 201320185867 patent/CN203223438U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615432A (en) * | 2013-12-13 | 2014-03-05 | 蚌埠液力机械有限公司 | Buffering structure for forklift lifting oil cylinder |
| CN103615432B (en) * | 2013-12-13 | 2016-08-17 | 蚌埠液力机械有限公司 | Fork truck lifting oil cylinder buffer structure |
| CN106194884A (en) * | 2016-08-26 | 2016-12-07 | 汽解放柳州特种汽车有限公司 | It is a kind of without internal leakage is pushed up Tipper Lifting oil cylinder |
| CN109458376A (en) * | 2018-12-11 | 2019-03-12 | 山东弘发兴凯实业股份有限公司 | A kind of hydraulic abdomen elevating ram |
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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: 20131002 Termination date: 20140322 |