CN106044615A - Mechanical lock double-acting jack - Google Patents
Mechanical lock double-acting jack Download PDFInfo
- Publication number
- CN106044615A CN106044615A CN201610596737.3A CN201610596737A CN106044615A CN 106044615 A CN106044615 A CN 106044615A CN 201610596737 A CN201610596737 A CN 201610596737A CN 106044615 A CN106044615 A CN 106044615A
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- outer piston
- cylinder barrel
- bar
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Abstract
The invention discloses a jack. The jack comprises a cylinder barrel (1) and an end cover (2); the cylinder barrel (1) is provided with a rodless cavity oil port (3); a rod cavity oil port (4) is formed in the end cover (2); an inner piston rod (7) is arranged in an inner hole of an outer piston rod (5); a first oil cavity (8) is formed in the inner piston rod (7); the back end of the inner hole of the outer piston rod (5) is connected with a back piston (6); the front end of the inner piston rod (7) is connected with a front piston (10); a second oil cavity (9) is arranged between the inner piston rod (7) and the outer piston rod (5); a connecting part (13) is arranged at the top of the outer piston rod (5); a top plate (14) is arranged at the top of the connecting part (13); a thread is arranged on the outer side surface of the front end of the outer piston rod (5); a locking nut (15) is correspondingly arranged at the top of the cylinder barrel (1); and an air eliminating hole (12) is formed in the outer piston rod (5) at the front end of the front piston (10). The jack can reduce the mounting distance and increase the piston travel, and has a mechanical locking function.
Description
Technical field
The present invention relates to a kind of jack, a kind of double-action jack with mechanical caging function.
Background technology
Jack, according to different fuel feeding directions, can be divided into single-acting jack and double-action jack, and single-acting is very heavy
Top is only toward the side input hydraulic oil of cylinder, and makes piston reverses direction backhaul by other external force；Double-action jack be then respectively to
The both sides input hydraulic oil of cylinder, forward and reverse motion of piston all completes by hydraulic oil, and two oilholes of double-action jack are usual
Being arranged on the both sides of cylinder, the locating distance between two oilholes is bigger so that the stroke of piston is affected；Furthermore, use high-voltage oil liquid
The double-action jack driven is the flexible support of a kind of instability to the support of weight, and it also exists asking of high-voltage oil liquid backflow
Topic, fluid backflow will cause the support of jack pair weight to be lost efficacy time serious, have a strong impact on the safe handling of jack.
Summary of the invention
The technical problem to be solved is to provide a kind of mechanical lock double-action jack, and it can not only shorten two oil
Locating distance between Kou, increases piston stroke, also has mechanical caging function.
The technical solution adopted for the present invention to solve the technical problems is: mechanical lock double-action jack, including cylinder barrel originally
Body, outer piston bar, inner piston rod and top board, described cylinder barrel body is made up of cylinder barrel and end cap, and cylinder barrel is provided with rodless cavity hydraulic fluid port,
Being provided with rod chamber hydraulic fluid port in end cap, described inner piston rod is arranged in the endoporus of described outer piston bar, is provided with in inner piston rod
The first axial oil pocket, the rear end of the first oil pocket is connected with rod chamber hydraulic fluid port, and the endoporus rear end of outer piston bar is associated with back piston,
And back piston slides and is placed on inner piston rod rear end, inner piston rod front end is fixedly connected with secondary piston, and secondary piston slides and is located at outer piston bar
Endoporus in, be provided with the second oil pocket between outer piston bar and inner piston rod, the front end of the first oil pocket and secondary piston and back piston
Between the second oil pocket be connected, outer piston masthead portion is provided with connecting portion, and connecting portion top is provided with described top board.
Further, the front end outer side face of described outer piston bar is provided with screw thread, sets accordingly in described cylinder barrel top
It is equipped with the locking nut being coupled on outer piston bar.
Further, described connecting portion is connected by screw thread and outer piston bar are fixing, and described top board passes through bolt and is connected
Portion is fixing to be connected.
Further, in the outer piston bar of secondary piston front end, it is communicated with the hole of cooling down of its endoporus and lateral surface.
The invention has the beneficial effects as follows: two hydraulic fluid ports are placed in one end by the mechanical lock double-action jack of the present invention, can shorten
The locating distance of oil cylinder, increases piston stroke, meanwhile, also has mechanical caging function.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mechanical lock double-action jack of the present invention.
Figure is labeled as: 1-cylinder barrel, 2-end cap, 3-rodless cavity hydraulic fluid port, 4-rod chamber hydraulic fluid port, 5-outer piston bar, lives after 6-
Plug, 7-inner piston rod, 8-the first oil pocket, 9-the second oil pocket, 10-secondary piston, 11-connects oil pocket, and 12-cools down hole, 13-connection
Portion, 14-top board, 15-locking nut.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the mechanical lock double-action jack of the present invention includes cylinder barrel body, outer piston bar 5, back piston 6, interior
Piston rod 7 and top board 14, described cylinder barrel body is made up of cylinder barrel 1 and end cap 2, and described cylinder barrel 1 is provided with rodless cavity hydraulic fluid port 3,
It is provided that high-voltage oil liquid in order to drive outer piston bar 5 to be provided with rod chamber hydraulic fluid port 4 in previous crops forward travel, described end cap 2,
It is provided that high-voltage oil liquid is in order to drive outer piston bar 5 to make setback backward.Described inner piston rod 7 is arranged on described outer piston
In the endoporus of bar 5, in inner piston rod, 7 are provided with the first axial oil pocket 8, the rear end of the first oil pocket 8 and described rod chamber hydraulic fluid port 4
It is connected；The endoporus rear end of described outer piston bar 5 is associated with a back piston 6, and back piston 6 slides and is placed on the rear end of inner piston rod,
The front end of inner piston rod 7 is fixedly connected with a secondary piston 10, and secondary piston 10 slides in the endoporus being placed on outer piston bar 5, outer piston bar 5 with
The second oil pocket 9 it is provided with, the front end of described first oil pocket 8 and between secondary piston 10 and back piston 6 between inner piston rod 7
Second oil pocket 9 connects oil pocket by one and is connected, and so makes structure between rod chamber hydraulic fluid port and the first oil pocket 8 and the second oil pocket 9
Become an oil duct being interconnected, when high-voltage oil liquid is after rod chamber hydraulic fluid port 4 enters, and it will flow to the by described oil duct
With forward and backward piston contact the pressure of himself is acted on forward and backward piston, due to secondary piston 10 and interior work in two oil pockets 9
Stopper rod 7 is fixing to be connected, and inner piston rod 7 is fixing with cylinder barrel to be connected, so when high-voltage oil liquid acts on back piston 6, back piston 6
Outer piston bar 5 will be driven to make setback backward.It is provided with in the outer piston bar 5 of described secondary piston 10 front end and can connect in it
Hole and the hole 12 of cooling down of lateral surface, when outer piston bar 5 is when making to retreat recovery motion, and cooling down hole 12 energy will be from the external world enters into
Air in piston rod 5 endoporus emits, thus avoids forming high pressure in the endoporus of piston rod 5 outside and making outer piston bar 5
Can not successfully reclaim retrogressing.Described outer piston bar 5 top is provided with connecting portion 13, and this connecting portion 13 is by screw thread and outer piston
Bar 5 is fixing to be connected, and the top of connecting portion 13 is provided with one piece of described top board 14, and described top board 14 is by bolt and connecting portion 13
Fixing connection, top board 14 is the gripper shoe being supported weight.Rodless cavity oil due to the mechanical lock double-action jack of the present invention
Mouthfuls 3 and rod chamber hydraulic fluid port 4 be arranged at same one end of cylinder barrel body, and therebetween close together, piston rod 5 length outside
In the case of Yi Ding, shorten the locating distance of oil cylinder, thus increase the stroke of secondary piston 6.
It addition, in order to make the jack of the present invention have mechanical caging function, at the lateral surface of described outer piston bar 5 front end
On be provided with screw thread, then the top at cylinder barrel 1 is correspondingly provided with the locking nut 15 being coupled on outer piston bar 5, when outer work
When stopper rod 5 moves forward to specify position, by described locking nut 15 and the screw thread on outer piston bar 5 front end outer side face
Mating reaction and outer piston bar 5 is locked firmly, thus ensure the use safety of the mechanical lock double-action jack of the present invention
Property.
Claims (4)
1. mechanical lock double-action jack, including cylinder barrel body, outer piston bar (5), inner piston rod (7) and top board (14), it is special
Levying and be: described cylinder barrel body is made up of cylinder barrel (1) and end cap (2), cylinder barrel (1) is provided with rodless cavity hydraulic fluid port (3), end cap (2)
Inside being provided with rod chamber hydraulic fluid port (4), described inner piston rod (7) is arranged in the endoporus of described outer piston bar (5), inner piston rod
(7) being provided with axial the first oil pocket (8) in, the rear end of the first oil pocket (8) is connected with rod chamber hydraulic fluid port (4), outer piston bar (5)
Endoporus rear end be associated with back piston (6), and back piston (6) slides and is placed on inner piston rod (7) rear end, and inner piston rod (7) front end is solid
Being associated with secondary piston (10), secondary piston (18) slides in the endoporus being located at outer piston bar (5), outer piston bar (5) and inner piston rod (7)
Between be provided with the second oil pocket (9), the second oil pocket between the front end of the first oil pocket (8) and secondary piston (10) and back piston (6)
(9) being connected, outer piston bar (5) top is provided with connecting portion (13), and connecting portion (13) top is provided with described top board (14).
2. mechanical lock double-action jack as claimed in claim 1, it is characterised in that: outside the front end of described outer piston bar (5)
It is provided with screw thread on side, is correspondingly provided with the locking nut being coupled on outer piston bar (5) in described cylinder barrel (1) top
(15).
3. mechanical lock double-action jack as claimed in claim 1 or 2, it is characterised in that: described connecting portion (13) passes through spiral shell
Stricture of vagina is fixing with outer piston bar (5) to be connected, and described top board (14) is connected by bolt and connecting portion (13) are fixing.
4. mechanical lock double-action jack as claimed in claim 3, it is characterised in that: in the outer piston of secondary piston (10) front end
The hole of cooling down (12) of its endoporus and lateral surface it is communicated with in bar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596737.3A CN106044615A (en) | 2016-07-27 | 2016-07-27 | Mechanical lock double-acting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610596737.3A CN106044615A (en) | 2016-07-27 | 2016-07-27 | Mechanical lock double-acting jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106044615A true CN106044615A (en) | 2016-10-26 |
Family
ID=57418526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610596737.3A Pending CN106044615A (en) | 2016-07-27 | 2016-07-27 | Mechanical lock double-acting jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106044615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020124267A1 (en) * | 2018-12-21 | 2020-06-25 | 8082464 Canada Inc. | Hydraulic cylinder assembly, lifting apparatus and method for lifting a heavy machinery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586586A (en) * | 2009-05-22 | 2009-11-25 | 浙江西湖过滤设备有限公司 | A complex oil cylinder |
| CN202201677U (en) * | 2011-08-24 | 2012-04-25 | 宁波赛维思机械有限公司 | Difunctional mechanically self-locking jack |
| CN105257627A (en) * | 2015-11-25 | 2016-01-20 | 湖南特力液压有限公司 | Hydraulic cylinder and engineering machinery |
| AT516280B1 (en) * | 2015-02-06 | 2016-04-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit with adjusting ring |
| DE202016102354U1 (en) * | 2016-05-03 | 2016-05-20 | Lemacher Hydraulik Inh. Adolf Rathschlag e.K. | Hydraulic cylinder means |
| CN205973594U (en) * | 2016-07-27 | 2017-02-22 | 泸州合成液压件有限公司 | Mechanical lock double acting jack |
-
2016
- 2016-07-27 CN CN201610596737.3A patent/CN106044615A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586586A (en) * | 2009-05-22 | 2009-11-25 | 浙江西湖过滤设备有限公司 | A complex oil cylinder |
| CN202201677U (en) * | 2011-08-24 | 2012-04-25 | 宁波赛维思机械有限公司 | Difunctional mechanically self-locking jack |
| AT516280B1 (en) * | 2015-02-06 | 2016-04-15 | Neuson Hydrotec Gmbh | Piston-cylinder unit with adjusting ring |
| CN105257627A (en) * | 2015-11-25 | 2016-01-20 | 湖南特力液压有限公司 | Hydraulic cylinder and engineering machinery |
| DE202016102354U1 (en) * | 2016-05-03 | 2016-05-20 | Lemacher Hydraulik Inh. Adolf Rathschlag e.K. | Hydraulic cylinder means |
| CN205973594U (en) * | 2016-07-27 | 2017-02-22 | 泸州合成液压件有限公司 | Mechanical lock double acting jack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020124267A1 (en) * | 2018-12-21 | 2020-06-25 | 8082464 Canada Inc. | Hydraulic cylinder assembly, lifting apparatus and method for lifting a heavy machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |
|
| RJ01 | Rejection of invention patent application after publication |