CN203335520U - Hydraulic cylinder with oil hole sets formed in cylinder barrel side wall - Google Patents
Hydraulic cylinder with oil hole sets formed in cylinder barrel side wall Download PDFInfo
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- CN203335520U CN203335520U CN2013203935914U CN201320393591U CN203335520U CN 203335520 U CN203335520 U CN 203335520U CN 2013203935914 U CN2013203935914 U CN 2013203935914U CN 201320393591 U CN201320393591 U CN 201320393591U CN 203335520 U CN203335520 U CN 203335520U
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- oilhole
- rodless cavity
- oil hole
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Abstract
The hydraulic cylinder with oil hole sets formed in the cylinder barrel side wall is composed of a rodless cavity cover, a piston, a cylinder barrel, a rod cavity cover, a rod cavity oil inlet and outlet plate and a rodless cavity oil inlet and outlet plate. The two oil hole sets are machined in the side walls at the two ends of the cylinder barrel respectively and distributed in an equidistance mode, the oil hole, closest to an end socket of the cylinder barrel, of the oil hole sets is a first oil hole, the left oil hole set is connected with the rodless cavity oil inlet and outlet plate, and the right oil hole set is connected with the rod cavity oil inlet and outlet plate. When pressure oil enters the rodless cavity oil inlet and outlet plate, the rod cavity oil inlet and outlet plate is connected with an oil tank, and the piston is provided with no control device, the piston achieves five motion stages of slow start, gradual acceleration, high-speed uniform motion, gradual deceleration and slow stop, and a return stroke is in the same conditions. Motion and dynamic characteristics of the piston are good, the hydraulic cylinder with the oil hole sets formed in the cylinder barrel side wall is already applied to an SCH series horizontal type squeeze casting machine and enables a swing charging barrel to work stably and rapidly, and a good effect is achieved. The technology can be applied to the design of a common hydraulic cylinder and a common piston, a hydraulic control system is simplified, and motion reliability is improved.
Description
Technical field
The utility model relates in extrusion casting machine and drives barrel to make the oil cylinder of oscillating motion.Also be applicable to hydraulic jack in general sense.
Background technique
In vertical and Horizontal type extrusion casting machine, adopt at present the piston in oil cylinder to move to drive barrel to do oscillating motion, because the barrel quality is larger, larger inertia is arranged, so, require piston to move while starting and want slowly, and accelerate gradually, barrel swings while substantially putting in place, piston moves from fast to slow again, make that barrel is unlikely to be done to preshoot pendulum because of motional inertia, cause damage, but correct the swing stops to specified position.In order to realize this purpose, at present in hydraulic circuit, Set scale valve and throttle valve are controlled the oil inlet quantity of driven plunger, this control gear complexity, and because of operating ambient temperature is high and dust more than the time fault arranged.
Summary of the invention
The deficiency existed in order to solve existing barrel oscillating motion hydraulic jack control gear, the utility model proposes a kind of new thinking and new structure, in the situation that there is no extra control gear, make piston in movement process adjustment movement speed voluntarily, realize slowly starting, progressively accelerate high speed uniform motion, progressively deceleration and slowly five motion stages of stop motion.
The technological scheme that the utility model solves its technical problem employing is as follows: the import and export oil circuit that changes oil cylinder, respectively process one group of oilhole group equidistantly distributed at the sidewall at cylinder barrel (3) two ends, the oilhole of this most close cylinder barrel of oilhole group (3) termination is called the first oilhole, the oilhole group on the left side is connected with the rodless cavity turnover oiled-plate method (7) of cylinder barrel (3) side, and the oilhole group on the right is connected with You Gang chamber, cylinder barrel (3) side turnover oiled-plate method (6).If the total length of oilhole group is L, there is no the oilhole partial-length in the middle of cylinder barrel (3) is D, and the total effective length of cylinder barrel (3) is 2L+D, as shown in Figure 1.Put piston (2) in cylinder barrel (3), and piston (2) highly abuts on the rodless cavity lid (1) on cylinder barrel (3) left side for the projection of Δ, rodless cavity by cylinder barrel (3) left side passes in and out oiled-plate method (7) to oilhole group injection pressure oil, the oilhole group on the right passes in and out oiled-plate method (6) by rod chamber and connects the normal pressure fuel tank, due to piston (2) surface coverage cylinder barrel (3) rodless cavity all oilholes except the first left hole, high pressure oil enters rodless cavity by the first left hole, only first left hole oil-feed during beginning, pressure oil promotes piston (2) and slowly starts, motion along with piston (2), expose gradually in the second left hole, the oil-feed quantitative change is large, make the mobile speedup of piston (2), until oilhole group all oilholes in the left side are not covered by piston (2), the oil inlet quantity maximum, fuel-displaced also the most unimpeded, piston (2) high speed uniform motion, further piston (2) is mobile, progressively cover the oilhole group of cylinder barrel (3) rod chamber, oil pump capacity diminishes, piston (2) is mobile to slow down, until only have first hole of right-hand member fuel-displaced, oil pump capacity is very little, piston (2) is motion slowly, when piston (2) front end projection is encountered rod chamber lid (5), make piston (2) stop motion.When piston (2) while making drawback movement, rod chamber turnover oiled-plate method (6) advances pressure oil and rodless cavity turnover oiled-plate method (7) connects the normal pressure fuel tank, the inverted repeat said process, piston (2) just slowly starts from right to left, speedup, high speed uniform motion, slow down, slowly stop.During backhaul, pressure oil enters the rod chamber body, and the volume ratio rodless cavity volume of rod chamber body is little, so speed when mean velocity during backhaul is greater than working stroke, just in time having met the oil cylinder slow-motion is working stroke, and the requirement that rewind down is backhaul has improved efficiency.
Characteristics of the present utility model and beneficial effect are: do not adopt any control gear, can utilize the self structure characteristics of oil cylinder, realization has the five-stage of bar piston to move, and motion and dynamic feature are preferably arranged, and has overcome the adverse effect of driven member mass inertia to motion; Simplify hydraulic system structure, reduce costs, improved the reliability of motion, reduce fault; Realize slow forward fast backward simultaneously, raise the efficiency.
The accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model, and in figure, 1 is the rodless cavity lid, the 2nd, and piston, the 3rd, cylinder barrel, the 4th, piston rod, the 5th, rod chamber lid, the 6th, rod chamber turnover oiled-plate method, the 7th, rodless cavity turnover oiled-plate method.In the drawings, cylinder barrel (3) rodless cavity oilhole group and rod chamber oilhole group left and right are symmetrically distributed.The axial overall length of oilhole group is L, and the length of not boring the oilhole section in cylinder barrel is D, and the axial effective length of piston is Z.The height projection at piston two ends is all Δ mutually.When piston abuts in rodless cavity lid or rod chamber lid by projection, piston must not cover first oilhole of oilhole group, according to this, requires to select the size of Δ.
Fig. 2 is the graph of a relation between piston displacement and piston traveling speed, can find out, piston traveling speed is by slow startup (I), accelerated motion (II), high-speed motion (III), retarded motion (IV) and slowly stop (V) five-stage and form.Regulate relevant size L and the D of cylinder barrel (3), the diameter of oilhole group oilhole and the quantity of oilhole, the axial length Z of regulating piston (2), can change speed, and can to a certain degree change the mutual ratio of above-mentioned five-stage.
The utility model technology is applied in SCH series horizontal extrusion casting machine, obtains effect preferably.The utility model technology also can be applied to the design of general hydraulic jack and piston, thereby greatly simplifies hydraulic control system, and improves the reliability of motion.
Embodiment
The oilhole cross-sectional sizes of cylinder barrel (3) oilhole group and the quantity of oilhole have determined oily flow, travelling speed and traveling time that the quantity by the design oilhole of different-diameter and oilhole can regulating piston (2).The axial length Z of piston (2) will design proper, and during the limit position of piston (2) in rodless cavity or rod chamber, piston (2) will cover rodless cavity or all oilholes of rod chamber side except the first oilhole with cylinder barrel (3) contact segment.In piston (2) both sides, projection is set, when the projection of piston (2) abuts in rod chamber lid or rodless cavity and covers, the first oilhole is not closed covering all the time.As shown in Figure 1, on piston (2), will have projection and projection diameter little, when piston during in limit, left and right limit position, the high pressure oil that flows into cylinder barrel (3) through first oilhole acts on piston end surface and promotes piston (2), guarantee that it starts thrust.If on piston (2), projection is not set, can cover at rod chamber on (5) and rodless cavity lid (1) projection is set, effect is identical.When the axial length Z of piston (2) is less than cylinder barrel (3) without oilhole partial-length D, just there will be piston (2) the high speed uniform motion stage.When being applied to the hydraulic jack of SCH series horizontal extrusion casting machine swing barrel, Z is far smaller than D, so piston (2) has obvious high speed uniform motion section.
Claims (2)
1. the cylinder barrel sidewall arranges the hydraulic jack of oilhole group, by rodless cavity, covered, piston, cylinder barrel, rod chamber lid, rod chamber turnover oiled-plate method, the compositions such as rodless cavity turnover oiled-plate method, it is characterized in that: respectively process one group of oilhole group equidistantly distributed at the sidewall at cylinder barrel two ends, the oilhole of this most close cylinder barrel of oilhole group termination is called the first oilhole, the oilhole group on the left side is connected with the rodless cavity of cylinder barrel side turnover oiled-plate method, and the oilhole group on the right is connected with You Gang chamber, cylinder barrel side turnover oiled-plate method.
2. cylinder barrel sidewall according to claim 1 arranges the hydraulic jack of oilhole group, it is characterized in that: the axial length of piston will design proper, during the limit position of piston in rodless cavity or rod chamber, piston and cylinder barrel contact segment will cover rodless cavity or all oilholes of rod chamber side except the first oilhole, in the piston both sides, projection is set, when the projection of piston abuts in rod chamber lid or rodless cavity and covers, the first oilhole is not closed covering all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203935914U CN203335520U (en) | 2013-07-04 | 2013-07-04 | Hydraulic cylinder with oil hole sets formed in cylinder barrel side wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203935914U CN203335520U (en) | 2013-07-04 | 2013-07-04 | Hydraulic cylinder with oil hole sets formed in cylinder barrel side wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335520U true CN203335520U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203935914U Expired - Lifetime CN203335520U (en) | 2013-07-04 | 2013-07-04 | Hydraulic cylinder with oil hole sets formed in cylinder barrel side wall |
Country Status (1)
| Country | Link |
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| CN (1) | CN203335520U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925750A (en) * | 2017-04-25 | 2017-07-07 | 苏州三基铸造装备股份有限公司 | Extrusion casting machine moving platen forges and presses cylinder apparatus |
| CN107732479A (en) * | 2017-11-02 | 2018-02-23 | 广西电网有限责任公司北海供电局 | A kind of construction tool and construction method of power transmission line shaft tower earthing or grounding means |
| CN114109963A (en) * | 2021-11-19 | 2022-03-01 | 济南悉通液压设备配套有限公司 | Operation control method for oil cylinder of corner combining machine and hydraulic system |
| CN114263642A (en) * | 2021-12-23 | 2022-04-01 | 上海新跃联汇电子科技有限公司 | Anti-rolling gyroscope precession speed control device and control method |
-
2013
- 2013-07-04 CN CN2013203935914U patent/CN203335520U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925750A (en) * | 2017-04-25 | 2017-07-07 | 苏州三基铸造装备股份有限公司 | Extrusion casting machine moving platen forges and presses cylinder apparatus |
| CN107732479A (en) * | 2017-11-02 | 2018-02-23 | 广西电网有限责任公司北海供电局 | A kind of construction tool and construction method of power transmission line shaft tower earthing or grounding means |
| CN114109963A (en) * | 2021-11-19 | 2022-03-01 | 济南悉通液压设备配套有限公司 | Operation control method for oil cylinder of corner combining machine and hydraulic system |
| CN114109963B (en) * | 2021-11-19 | 2023-12-15 | 济南悉通液压设备配套有限公司 | Corner-assembled engine oil cylinder operation control method and hydraulic system |
| CN114263642A (en) * | 2021-12-23 | 2022-04-01 | 上海新跃联汇电子科技有限公司 | Anti-rolling gyroscope precession speed control device and control method |
| CN114263642B (en) * | 2021-12-23 | 2023-06-30 | 上海新跃联汇电子科技有限公司 | Device and method for controlling precession speed of anti-rolling gyroscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
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| CX01 | Expiry of patent term |