CN204357833U - For the end cover of hydraulic jack - Google Patents
For the end cover of hydraulic jack Download PDFInfo
- Publication number
- CN204357833U CN204357833U CN201420716395.0U CN201420716395U CN204357833U CN 204357833 U CN204357833 U CN 204357833U CN 201420716395 U CN201420716395 U CN 201420716395U CN 204357833 U CN204357833 U CN 204357833U
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- end cover
- oil
- boss
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to technical field of hydraulic oil cylinder, is specifically related to a kind of end cover for hydraulic jack.It comprises cylinder barrel, and cylinder barrel bottom opening place is provided with end cover; Convex to form in the middle part of end cover for stretching into boss in cylinder barrel and outer wall of boss is configured to inner wall of cylinder of fitting, boss peripheral configuration has a circle baffle plate; Baffle plate and boss limit out a circle mounting groove jointly, the mounting plate that the outer wall at cylinder barrel bottom opening place becomes to coordinate with mounting groove to inner circumferential contracted configurations; Baffle plate is provided with through hole, and the corresponding through hole of cylinder barrel sidewall is provided with screw.The utility model can preferably seal hydraulic jack.
Description
Technical field
The present invention relates to technical field of hydraulic oil cylinder, specifically, relate to a kind of end cover for hydraulic jack.
Background technique
Hydraulic energy is changed into mechanical energy, does the hydraulic actuator of straight reciprocating motion (or oscillating motion) by hydraulic jack, and its structure is simple, reliable operation.When realizing to-and-fro motion with it, can speed reducer be removed from, and there is no drive gap, stable movement, therefore be used widely in the hydraulic system of various machinery.The pressure reduction on hydraulic jack ouput force and piston effective area and both sides thereof is directly proportional; Oil hydraulic cylinder is made up of cylinder barrel and cylinder cap, piston and piston rod, seal arrangement, damping device and venting gas appliance substantially.Damping device and venting gas appliance are depending on embody rule occasion, and other devices are then essential.
Existing hydraulic jack uses extensively, relate to multiple field, when hydraulic jack applies to different technical fields, because engine request is different, just must be also different to the requirement of hydraulic jack, such as, for field of die casting machines, in order to improve the working efficiency of die casting machine, the hydraulic jack being used for die casting machine with regard to inevitable requirement can to-and-fro motion fast; For large-tonnage field, because tonnage is comparatively large, just necessarily require the hydraulic jack for large-tonnage field can possess working stability, Security preferably, otherwise consequence is by hardly imaginable; In the multiple fields comprising above-mentioned two fields, a kind of special hydraulic jack is all lacked in prior art.In addition, due to the defect of end cover in project organization of hydraulic jack of the prior art, end cover is made often can not to reach preferably sealing effect.
Summary of the invention
In order to certain or some defect of prior art can be overcome, the invention provides a kind of great tonnage hydraulic oil cylinder.
According to great tonnage hydraulic oil cylinder of the present invention, it comprises cylinder barrel, is provided with lining in cylinder barrel, and lining slidably connects piston rod; Cylinder barrel side wall upper part is provided with pressure stabilizing mechanism, and pressure stabilizing mechanism comprises and is communicated with inner cavity of cylinder and extraneous vestibule; Be provided with piston, spring and cover plate in described vestibule, spring is for being pressed on the connecting port of described vestibule and inner cavity of cylinder by piston, cover plate is used for piston and spring to be limited in described cavity; Cylinder barrel sidewall bottom is provided with into oil outlet mechanism, and enter oil outlet mechanism and comprise fuel-displaced conduit, in cylinder barrel sidewall, structure is provided with oil spilling runner, and oil spilling runner is for being communicated with described vestibule and fuel-displaced conduit.
Be provided with lining between the cylinder barrel of great tonnage hydraulic oil cylinder of the present invention and piston rod, thus make between piston rod and lining, to possess preferably sealability, and lining is easy to change, and reduces maintenance difficulties.The present invention is to provide a kind of for large-tonnage hydraulic jack, this just makes the hydraulic pressure that inner cavity of cylinder of the present invention is operationally born larger, if do not carry out stable operation to the hydraulic pressure of inner cavity of cylinder, gently then easily make the deformation of piston rod or lining, heavy then easily cause security incident.Pressure stabilizing mechanism of the present invention is located at cylinder barrel side wall upper part, when piston rod stretches out cylinder barrel completely, pressure stabilizing mechanism is subject to the pressure of inner cavity of cylinder hydraulic oil, when inner cavity of cylinder hydraulic pressure is too high, piston can be subjected to displacement laterally, make the hydraulic oil of inner cavity of cylinder can flow into flowline along oil spilling runner, thus pressure release is carried out to inner cavity of cylinder, avoid the potential safety hazard brought because inner cavity of cylinder hydraulic pressure is too high.
Pressure stabilizing mechanism of the present invention comprises piston and spring, makes it possible to regulate overflow threshold value by effective compression area of regulating piston and the parameter of spring.
As preferably, described vestibule is disposed radially.
Pressure stabilizing mechanism of the present invention can be arranged radially on cylinder barrel sidewall, and this is convenient to the setting of pressure stabilizing mechanism.
As preferably, cylinder barrel bottom opening and opening are by an end cover sealing.
Cylinder barrel bottom opening of the present invention, be convenient to lining and piston rod and turning of cylinder barrel and join, cylinder barrel bottom opening is also provided with end cover, thus ensure that the sealability of inner cavity of cylinder.
As preferably, cover plate and described vestibule are threaded connection.
Cover plate of the present invention is screwed onto on cylinder barrel sidewall, makes cover plate be convenient to disassemble or assemble, is convenient to the maintenance to piston and spring.
In order to certain or some defect of prior art can be overcome, the invention provides a kind of hydraulic jack for die casting machine.
According to the hydraulic jack for die casting machine of the present invention, it comprises cylinder barrel, and cylinder barrel sidewall bottom is provided with into oil outlet mechanism, enters oil outlet mechanism and comprises the fuel-displaced conduit, buffering conduit and the oil-feed conduit that are set up in parallel successively; Fuel-displaced conduit is provided with the first oil outlet be in communication with the outside, and buffering conduit is provided with the second oil outlet be communicated with inner cavity of cylinder and the first filler opening be in communication with the outside, and oil-feed conduit is provided with the second filler opening be communicated with inner cavity of cylinder; Buffering conduit is provided with the first plunger, the first spring and the second plunger, and the first plunger, the second plunger correspondence are pressed on the second oil outlet, the first filler opening place by the first spring; Buffering channel sidewalls is provided with the oil outlet be communicated with fuel-displaced conduit and the oil inlet hole be communicated with oil-feed conduit, and oil outlet is positioned at inside oil inlet hole diametrically.
Hydraulic jack for die casting machine of the present invention, its first oil outlet can be used in being connected with flowline, and its first filler opening can be used in being connected with inflow pipeline, its oil-feed and fuel-displaced time, working principle is respectively as follows:
When hydraulic oil enters inner cavity of cylinder from the first filler opening, hydraulic oil by the second plunger to cylinder barrel inboard compression, along with inside contracting of the second plunger, oil inlet hole reveals, thus making hydraulic oil can enter oil-feed conduit from oil inlet hole, the hydraulic oil afterwards in oil-feed conduit enters inner cavity of cylinder from the second filler opening; In the process, the first plunger is closed the second oil outlet, the second plunger all the time and is closed oil outlet all the time, thus ensure that hydraulic oil can not be revealed from flowline in oil-feed process;
When hydraulic oil flows out from inner cavity of cylinder, first filler opening stops passing into hydraulic oil, outside is pressed towards under the effect of now the first plunger hydraulic oil in cylinder barrel, along with the outer of the first plunger moves, oil outlet reveals, thus make hydraulic oil can enter fuel-displaced conduit from oil outlet, flow to flowline place from the second oil outlet afterwards; In the process, the second plunger closes the first filler opening all the time, and the first plunger closes oil inlet hole all the time, thus ensure that hydraulic oil can not enter inflow pipeline in fuel-displaced process.
It can thus be appreciated that, in the course of the work of the present invention, by entering oil outlet mechanism, oil-feed or fuel-displaced one-way conduction can be realized, improve the structure into and out of oil machine structure of conventional hydraulic oil cylinder simply and effectively, thus make the hydraulic jack for die casting machine of the present invention preferably can apply to field of die casting machines.
As preferably, the aperture of oil outlet is less than the length of the second plunger.
Of the present invention in the hydraulic jack of die casting machine, the aperture of oil outlet is less than the length of the second plunger, and when this is avoided fuel-displaced effectively, hydraulic oil is crossed the first plunger through oil outlet and flows in buffering conduit.
As preferably, the aperture of oil inlet hole is less than the length of the first plunger.
Of the present invention in the hydraulic jack of die casting machine, the aperture of oil inlet hole is less than the length of the first plunger, and when this is avoided oil-feed effectively, hydraulic oil is crossed the second plunger through oil inlet hole and flows in buffering conduit.
In order to certain or some defect of prior art can be overcome, the invention provides a kind of end cover for hydraulic jack.
According to the end cover for hydraulic jack of the present invention, it comprises cylinder barrel, and cylinder barrel bottom opening place is provided with end cover; Convex to form in the middle part of end cover for stretching into boss in cylinder barrel and outer wall of boss is configured to inner wall of cylinder of fitting, boss peripheral configuration has a circle baffle plate; Baffle plate and boss limit out a circle mounting groove jointly, the mounting plate that the outer wall at cylinder barrel bottom opening place becomes to coordinate with mounting groove to inner circumferential contracted configurations; Baffle plate is provided with through hole, and the corresponding through hole of cylinder barrel sidewall is provided with screw.
End cover for hydraulic jack of the present invention, protruding in the middle part of its end cover, boss peripheral configuration has a circle baffle plate, and baffle plate and boss limit out a circle mounting groove jointly, the mounting plate that the outer wall at cylinder barrel bottom opening place becomes to coordinate with mounting groove to inner circumferential contracted configurations, this structure makes, when end cover coordinates with cylinder barrel, outer wall of boss can be fitted mounting plate inwall, forms first and is sealed and matched, baffle inner wall can be fitted mounting plate outer wall, forms second and is sealed and matched.End cover for hydraulic jack of the present invention coordinates by adopting two seals, improves the sealability between end cover and cylinder barrel widely.
In addition, mounting plate is shunk to inner circumferential by cylinder barrel bottom opening and is formed, and baffle plate is provided with through hole, the corresponding through hole of cylinder barrel sidewall is provided with screw, and this makes, and end cover can be fixed on cylinder body by screw, thus be convenient to the dismounting of end cover, be also convenient to follow-up maintenance.
As preferably, the outer wall of baffle plate is concordant with cylinder barrel outer wall.
The outer wall of baffle plate can be configured to concordant with cylinder barrel outer wall, and this makes end cover concordant with the outer wall of cylinder barrel, makes them structurally neat and possesses preferably visual effect.
As preferably, boss side wall ring is arranged with an inner peripheral seal circle.
Boss sidewall around being provided with an inner peripheral seal circle, thus can considerably increase the sealing between boss and mounting plate inwall.
As preferably, mounting plate outer wall is around being provided with one week exterior seal ring.
Mounting plate outer wall around being provided with one week exterior seal ring, thus can considerably increase the sealing between baffle inner wall and mounting plate outer wall.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of great tonnage hydraulic oil cylinder in embodiment 1;
Fig. 2 is the structural representation of a kind of hydraulic jack for die casting machine in embodiment 2.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.Should be understood that, embodiment makes an explanation to the present invention and and non-limiting.
Embodiment 1
Present embodiments provide a kind of great tonnage hydraulic oil cylinder and a kind of end cover for hydraulic jack.
As shown in Figure 1, be a kind of in the present embodiment structural representation of great tonnage hydraulic oil cylinder.It comprises cylinder barrel 110, is provided with lining 120 in cylinder barrel 110, lining 120 slidably connects piston rod 130.Cylinder barrel 110 bottom opening, and its opening is sealed by an end cover 140.
Cylinder barrel 110 side wall upper part is provided with pressure stabilizing mechanism 160, and pressure stabilizing mechanism 160 comprises and is communicated with cylinder barrel 110 inner chamber and extraneous vestibule.Be provided with piston 161, spring 162 and cover plate 163 in above-mentioned vestibule, spring 162 is for being pressed on the connecting port of above-mentioned vestibule and cylinder barrel 110 inner chamber by piston 161, cover plate 163 is for being limited in piston 161 and spring 162 in above-mentioned cavity.Cylinder barrel 110 sidewall bottom is provided with into oil outlet mechanism 150, and entering oil outlet mechanism 150 for being connected with inflow pipeline and flowline, being embedded with oil spilling runner 170 in cylinder barrel 110 sidewall, oil spilling runner 170 is for being communicated with above-mentioned vestibule and oil outlet tube.Above-mentioned vestibule is arranged along the radial direction of cylinder barrel 110, and cover plate 163 and above-mentioned vestibule are threaded connection.
Because the hydraulic jack in the present embodiment is for large-tonnage hydraulic jack, during great tonnage hydraulic cylinder efficient, the hydraulic pressure born of its cylinder barrel 110 inner chamber is larger, if do not carry out stable operation to the hydraulic pressure of cylinder barrel 110 inner chamber, light then easily make the deformation of piston rod 130 or lining 120, heavy then easily cause security incident.Pressure stabilizing mechanism 160 in the present embodiment is located at cylinder barrel 110 side wall upper part, when piston rod 130 stretches out cylinder barrel 110 completely, pressure stabilizing mechanism 160 is subject to the pressure of cylinder barrel 110 intracavity liquid force feed, when cylinder barrel 110 intracavity liquid presses through high, piston 161 is subjected to displacement laterally, make the hydraulic oil of cylinder barrel 110 inner chamber can flow into flowline along oil spilling runner 170, thus pressure release is carried out to cylinder barrel 110 inner chamber, avoid the potential safety hazard brought because cylinder barrel 110 intracavity liquid presses through height.
A kind of end cover for hydraulic jack in the present embodiment, it is arranged on the bottom end opening of cylinder barrel 110.Wherein, convex to form the boss 143 for stretching in cylinder barrel 110 in the middle part of end cover 140, boss 143 outer wall configuration becomes laminating cylinder barrel 110 inwall, and boss 143 peripheral configuration has a circle baffle plate 141.Baffle plate 141 and boss 143 limit out a circle mounting groove 145 jointly, the mounting plate 113 that the outer wall at cylinder barrel 110 bottom opening place becomes to coordinate with mounting groove 145 to inner circumferential contracted configurations; Baffle plate 141 is provided with through hole 144, and corresponding through hole 144 place of cylinder barrel 110 sidewall is provided with screw 112.When 141 turns, baffle plate is assigned in bottom cylinder barrel 110, the outer wall of baffle plate 141 is concordant with cylinder barrel 110 outer wall.Boss 143 side wall ring is provided with an inner peripheral seal circle 142, and mounting plate 113 outer wall is around being provided with one week exterior seal ring 111.
Embodiment 2
As shown in Figure 2, present embodiments provide a kind of hydraulic jack for die casting machine, the difference of a kind of great tonnage hydraulic oil cylinder in itself and embodiment 1 is: enter oil outlet mechanism 150 comprise be set up in parallel successively fuel-displaced conduit 210, cushion conduit 220 and oil-feed conduit 230.
In the present embodiment, fuel-displaced conduit 210 is provided with the first oil outlet 211 be in communication with the outside, buffering conduit 220 is provided with and the second oil outlet 221 of cylinder barrel 110 inner space and the first filler opening 222 of being in communication with the outside, and oil-feed conduit 230 is provided with the second filler opening 231 with cylinder barrel 110 inner space.Buffering conduit 220 is provided with the first plunger 223, first spring 224 and the first plunger 223, second plunger 225 correspondence is pressed on the second oil outlet 221, first filler opening 222 place by the second plunger 225, first spring 224.Buffering conduit 220 sidewall is provided with the oil outlet 1020 be communicated with fuel-displaced conduit 210 and the oil inlet hole 2030 be communicated with oil-feed conduit 230, and oil outlet 1020 is positioned at inside oil inlet hole 2030 diametrically.The aperture of oil outlet 1020 is less than the length of the second plunger 225, and the aperture of oil inlet hole 2030 is less than the length of the first plunger 223.
The first oil outlet 211 in this enforcement is for being connected with flowline, and the first filler opening 222 is for being connected with inflow pipeline.
When hydraulic oil enters cylinder barrel 110 inner chamber from the first filler opening 222, hydraulic oil by the second plunger 225 to cylinder barrel 110 inboard compression, along with inside contracting of the second plunger 225, oil inlet hole 2030 reveals, thus making hydraulic oil can enter oil-feed conduit 230 from oil inlet hole 2030, the hydraulic oil afterwards in oil-feed conduit 230 enters cylinder barrel 110 inner chamber from the second filler opening 231.In the process, the first plunger 223 is closed the second oil outlet 221, second plunger 225 all the time and is closed oil outlet 1020 all the time, thus ensure that hydraulic oil can not enter flowline in oil-feed process.
When hydraulic oil flows out from cylinder barrel 110 inner chamber, first filler opening 222 stops passing into hydraulic oil, outside is pressed towards under the effect of now the first plunger 223 hydraulic oil in cylinder barrel 110, along with the first the outer of plunger 223 moves, oil outlet 1020 reveals, thus make hydraulic oil can enter fuel-displaced conduit 210 from oil outlet 1020, flow to flowline place from the second oil outlet 221 afterwards.In the process, the second plunger 225 is closed the first filler opening 222, first plunger 223 all the time and is closed oil inlet hole 2030 all the time, thus ensure that hydraulic oil can not enter inflow pipeline in fuel-displaced process.
Schematically above be described the present invention and mode of execution thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the mode of structure similar to this technological scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (4)
1. for the end cover of hydraulic jack, it is characterized in that: comprise cylinder barrel (110), cylinder barrel (110) bottom opening place is provided with end cover (140); End cover (140) middle part convexes to form the boss (143) for stretching in cylinder barrel (110) and boss (143) outer wall configuration becomes laminating cylinder barrel (110) inwall, and boss (143) peripheral configuration has a circle baffle plate (141); Baffle plate (141) and boss (143) limit out a circle mounting groove (145) jointly, the mounting plate (113) that the outer wall at cylinder barrel (110) bottom opening place becomes to coordinate with mounting groove (145) to inner circumferential contracted configurations; Baffle plate (141) is provided with through hole (144), and corresponding through hole (144) place of cylinder barrel (110) sidewall is provided with screw (112).
2. the end cover for hydraulic jack according to claim 1, is characterized in that: the outer wall of baffle plate (141) is concordant with cylinder barrel (110) outer wall.
3. the end cover for hydraulic jack according to claim 1 and 2, is characterized in that: boss (143) side wall ring is arranged with an inner peripheral seal circle (142).
4. the end cover for hydraulic jack according to claim 3, is characterized in that: mounting plate (113) outer wall is around being provided with one week exterior seal ring (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716395.0U CN204357833U (en) | 2014-11-25 | 2014-11-25 | For the end cover of hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716395.0U CN204357833U (en) | 2014-11-25 | 2014-11-25 | For the end cover of hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357833U true CN204357833U (en) | 2015-05-27 |
Family
ID=53259306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420716395.0U Expired - Fee Related CN204357833U (en) | 2014-11-25 | 2014-11-25 | For the end cover of hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204357833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360181A (en) * | 2019-07-28 | 2019-10-22 | 天津市双象工程液压件有限责任公司 | A kind of cylinder cap and the hydraulic cylinder for being equipped with this cylinder cap |
-
2014
- 2014-11-25 CN CN201420716395.0U patent/CN204357833U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360181A (en) * | 2019-07-28 | 2019-10-22 | 天津市双象工程液压件有限责任公司 | A kind of cylinder cap and the hydraulic cylinder for being equipped with this cylinder cap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204099333U (en) | A kind of double-action single-stage cylinder | |
| CN204436933U (en) | The antitorque oil hydraulic cylinder of guiding in a kind of | |
| CN204357833U (en) | For the end cover of hydraulic jack | |
| CN204357831U (en) | For the hydraulic jack of die casting machine | |
| CN204357822U (en) | Great tonnage hydraulic oil cylinder | |
| CN104847615A (en) | Plunger pump | |
| CN204900407U (en) | Seal structure of pneumatic cylinder cylinder cap | |
| CN102079302B (en) | Air booster pump of engineering machinery brake system | |
| CN204900389U (en) | Mounting structure of pneumatic cylinder cylinder bottom | |
| CN105422547A (en) | Piston-free oil cylinder | |
| CN206221410U (en) | A kind of single-action hydraulic cylinder | |
| CN201125903Y (en) | Telescopic air cylinder | |
| CN108105198A (en) | A kind of single-action hydraulic cylinder | |
| CN208234447U (en) | A kind of high-precision is intermittently welded formula hydraulic jack | |
| RU180458U1 (en) | HYDRAULIC SHOCK ABSORBER | |
| CN204003308U (en) | Automobile specified petrol pump | |
| CN106672844A (en) | Hydraulic jack base convenient to repair | |
| CN204900388U (en) | Pneumatic cylinder cylinder end | |
| CN205278507U (en) | Intelligent electric liquid accuse gate valve | |
| CN204403394U (en) | Valve rod unitary tape stop screw type valve | |
| CN204941858U (en) | Explosion-proof type kinetic energy output device | |
| CN107339276B (en) | A kind of oil path distributor | |
| CN203318709U (en) | Pressure filling machine | |
| CN203272905U (en) | Non-repetitive filling valve | |
| CN203321934U (en) | Hydraulic cylinder with guide sleeve arranged outside |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311106 Shao village, Tangqi Town, Yuhang District, Zhejiang, Hangzhou Patentee after: Zhejiang Rong Heavy Industry Co., Ltd. Address before: 311106 Shao village, Tangqi Town, Yuhang District, Zhejiang, Hangzhou Patentee before: HANGZHOU RONGLI CASTING AND FORGING CO LTD |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20171125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |