CN108100922A - The split type jack of piston rod - Google Patents
The split type jack of piston rod Download PDFInfo
- Publication number
- CN108100922A CN108100922A CN201611059824.1A CN201611059824A CN108100922A CN 108100922 A CN108100922 A CN 108100922A CN 201611059824 A CN201611059824 A CN 201611059824A CN 108100922 A CN108100922 A CN 108100922A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- piston
- oil cylinder
- rear end
- protrusion
- 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
- B66F3/26—Adaptations or arrangements of pistons
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/12—Connection to driving members with piston-rods, e.g. rigid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of split type jack of piston rod, including oil cylinder, piston component, punching covers and seal assembly, the piston component includes piston head and piston rod, piston rod has concave step close to rear end cap one end, there is adaptable protrusion on piston head, the step is connected through a screw thread with the step, the step is longer than protrusion, it is close to the side wall of step in one side of the protrusion away from rear end cap, the opposite side of the protrusion living is equipped with round nut, round nut is set in the step on the external screw thread of rear end cap, the outer wall that the piston head is contacted with oil cylinder is set there are two guidance tape.Using more than structure, add the stress ability to bear that piston head becomes position with piston rod-type, increase the load capacity of jack, if simultaneously piston head and piston rod one of them when something goes wrong, one of them is only needed to change, without discarding entire piston component, reduces loss, the opposite whole service life for improving jack, and replace conveniently.
Description
Technical field
The invention belongs to Hydraulic for lifting load machinery technical fields, and in particular to a kind of split type jack of piston rod.
Background technology
Jack is lockup device common in industrial processes or machine-building, the jacking and off-load of usual jack
It is that completion is moved up and down in oil cylinder inner wall by piston, piston head promotes piston rod to rise load, and piston head is shunk then
Piston rod is driven to shrink, so as to off-load, in this process, load is acted on piston rod and piston completely.So very heavy
During the use on top, piston head, all in the state of dynamic loading, belongs to vulnerable part, specifically traditional piston with piston rod
Formula is integrally formed using piston head and piston rod, the place that piston head front end becomes with piston rod-type is susceptible to stress concentration, then
Often occur fatigue damage occur between piston head and piston rod, cause tear, and the two is integrally formed, only together more
It changes, greatly reduces the service life of jack.
The content of the invention
For solution more than technical problem, the present invention provides a kind of split type jack of piston rod.
To achieve the above object, technical scheme is as follows：
A kind of split type jack of piston rod, is characterized by, and is covered and for three including oil cylinder, piston component, punching
Between the seal assembly that seals, described oil cylinder one end is equipped with rear end cap, and the punching set is mounted in the piston component
In piston hole, the piston component includes piston head and piston rod, and the piston rod has concave close to rear end cap one end
Rank, the step are equipped with external screw thread, have the protrusion being adapted with the step on the piston head, the protrusion be equipped with
The internal thread that the external screw thread is adapted, the step are longer than protrusion, and described project through is threaded on the step, convex
The side wall that step is close in the one side away from rear end cap is played, the opposite side of the protrusion living is equipped with round nut, and the round nut is arranged
On external screw thread of the step close to rear end cap, the outer wall that the piston head is contacted with oil cylinder is set there are two guidance tape, described
The end of the oil cylinder other end is equipped with drive end bearing bracket, and the drive end bearing bracket is between the oil cylinder and piston rod.
Using more than structure, using the split structure of thread fitting connection between piston head and piston rod, work is added
Chock plug and piston rod-type become the stress ability to bear at position, that is, increase the load capacity of jack, if while piston head and piston
Bar one of them when something goes wrong, only need to change one of them, without discard entire piston component, reduce loss, relatively
The whole service life of jack is improved, and is replaced conveniently.
As preferred：Two guidance tapes are tetrafluoro bronze guidance tape.Using more than structure, increase the wear-resisting of guidance tape
Resistance to pressure, to prevent piston head from scratching inside oil cylinder.
As preferred：Using axis step type combination sealing between the drive end bearing bracket and piston rod.It, can using more than structure
The sealing performance being effectively increased between drive end bearing bracket and piston rod prevents hydraulic oil spill and leakage.
As preferred：Using hole step type combination sealing between the piston head and the oil cylinder.Using more than structure,
It adds piston head is sufficiently sealed with cylinder wall, prevents hydraulic oil spill and leakage.
As preferred：The end of the drive end bearing bracket and the described one end of plunger rod contacts face away from rear end cap be equipped with J-type without
Bone dustband.Using more than structure, prevent external dust from the entrance of the outer end of drive end bearing bracket and plunger rod contacts or piston rod
Dust adhesion enters on piston rod wall in piston hole during contraction.
As preferred：The drive end bearing bracket is equipped with groove, the groove with plunger rod contacts inner wall close to one end of rear end cap
Inside it is arranged with solid lubrication copper sheathing.Using more than structure, piston rod all contacts in contraction process with solid lubrication copper sheathing, can be right
Piston rod plays effective lubricating action, keeps piston rod surface smooth, is more advantageous to the contraction of piston rod.
As preferred：It is connected between the drive end bearing bracket and oil cylinder using thread fitting.It, will than traditional using more than structure
Drive end bearing bracket is fastened on oil cylinder end wall by screw and is more convenient.
Compared with prior art, the beneficial effects of the invention are as follows：
The split type jack of piston rod provided by the invention, using point of thread fitting connection between piston head and piston rod
Body formula structure adds the stress Bearing degree that piston head becomes position with piston rod-type, that is, increases the load capacity of jack, together
If when piston head and piston rod one of them when something goes wrong, only need to change one of them, without discard entire piston group
Part reduces loss, the opposite whole service life for improving jack, and replaces conveniently.
Description of the drawings
Fig. 1 is the sectional view of one embodiment of the invention；
Fig. 2 is piston component mounting structure partial enlarged view in Fig. 1.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
With reference to figure 1 and the split type jack of piston rod shown in Fig. 2, including oil cylinder 1, piston component 2, punching set 3 and use
The seal assembly sealed between three, described 1 one end of oil cylinder are equipped with rear end cap 11, and the punching set 3 is mounted on the work
In piston hole 22 in plug assembly 2, the piston component 2 includes piston head 20 and piston rod 21, and the piston rod 21 is after
11 one end of end cap has concave step 211, and the step 211 is equipped with external screw thread, have on the piston head 20 with it is described
The adaptable protrusion 201 of step 211, the protrusion 201 are equipped with the internal thread being adapted with the external screw thread, the step 211
Than protrusion it is 201 sections long, described raised 201 are threadedly attached on the step 211, protrusion 201 away from rear end cap 11 one
The side wall of step 211 is close in side, and the opposite side of the protrusion 201 living is equipped with round nut 23, and the round nut 23 is set in described
For step 211 on the external screw thread of rear end cap 11, the piston head 20 and the outer wall that oil cylinder 1 contacts set that there are two tetrafluoro bronze materials
The guidance tape 4 of matter, the end of 1 other end of oil cylinder are equipped with drive end bearing bracket 12, and the drive end bearing bracket 12 is located at the oil cylinder 1 and piston
Between bar 21.
Using axis with stepped combination sealing 5 between the drive end bearing bracket 12 and piston rod 21, the piston head 20 with it is described
Using hole step type combination sealing 6 between oil cylinder 1.
The end of drive end bearing bracket 12 and the described one end of 21 contact surface of piston rod away from rear end cap 11, if there are one J-type slot,
J-type bone free dustband 7 is arranged in the J-type slot, which contacts inner wall with piston rod 21 close to one end of rear end cap 11
Equipped with groove 120, solid lubrication copper sheathing 121 is arranged in the groove 120, is matched somebody with somebody between drive end bearing bracket 12 and oil cylinder 1 using screw thread
Close connection.
The course of work of the present invention is as follows：
Hydraulic oil enters from close to the oil inlet 13 of 11 one end of rear end cap inside oil cylinder 1, promotes piston head 20 in oil cylinder 1
It is moved along, and piston head 20 is connected with piston rod 21, so as to which 21 ejection cylinder 1 of piston rod be driven to play the work of lifting load
With when needing to lay down load, the oil outlet 14 that will be close to drive end bearing bracket 12 is opened, and high pressure oil outflow, pressure disappears, piston rod 21
Then slowly withdraw inside oil cylinder 1, it is stepped with stepped combination sealing 5 and hole by axis in 21 telescopic process of piston rod
Combination sealing 6 is sealed each component, prevents hydraulic oil spill and leakage, so as to influence load-bearing capacity.Because piston head 20 and piston
Using being threadedly coupled between bar 21, even if during one of failure, can also replace quickly, it is opposite to prolong without integral replacing
The whole service life of jack is grown.
Finally it should be noted that foregoing description is merely a preferred embodiment of the present invention, those of ordinary skill in the art
Under the enlightenment of the present invention, on the premise of without prejudice to present inventive concept and claim, expression as multiple types can be made, this
The conversion of sample is each fallen within protection scope of the present invention.
Claims (7)
1. a kind of split type jack of piston rod, it is characterised in that：Including oil cylinder (1), piston component (2), punching set (3) and use
The seal assembly sealed between three, described oil cylinder (1) one end are equipped with rear end cap (11), and the punching set (3) is mounted on
In piston hole (22) in the piston component (2), the piston component (2) includes piston head (20) and piston rod (21), institute
State piston rod (21) has concave step (211) close to rear end cap (11) one end, and the step (211) is equipped with external screw thread,
On the piston head (20) have with the step (211) be adapted protrusion (201), the protrusion (201) equipped with it is described
The internal thread that external screw thread is adapted, the step (211) is longer than raised (201), and the protrusion (201) is threadedly attached in institute
It states on step (211), the side wall of step (211), the protrusion living are close in the one side of raised (201) away from rear end cap (11)
(201) opposite side is equipped with round nut (23), and the round nut (23) is set in the step (211) close to rear end cap (11)
On external screw thread, the piston head (20) and the outer wall that oil cylinder (1) contacts set that there are two guidance tape (4), oil cylinder (1) other ends
End be equipped with drive end bearing bracket (12), the drive end bearing bracket (12) is between the oil cylinder (1) and piston rod (21).
2. the split type jack of piston rod according to claim 1, it is characterised in that：Two guidance tapes (4) are four
Fluorine bronze guidance tape.
3. the split type jack of piston rod according to claim 1, it is characterised in that：The drive end bearing bracket (12) and piston rod
(21) using axis step type combination sealing (5) between.
4. the split type jack of piston rod according to claim 1, it is characterised in that：The piston head (20) and the oil
Using hole step type combination sealing (6) between cylinder (1).
5. the split type jack of piston rod according to claim 1, it is characterised in that：The drive end bearing bracket (12) and the work
The end of the one end of stopper rod (21) contact surface away from rear end cap (11) is equipped with J-type bone free dustband (7).
6. the split type jack of piston rod according to claim 1, it is characterised in that：The drive end bearing bracket (12) and piston rod
(21) contact inner wall and be equipped with groove (120) close to one end of rear end cap (11), solid lubrication copper is arranged in the groove (120)
It covers (121).
7. the split type jack of piston rod according to claim 1, it is characterised in that：The drive end bearing bracket (12) and oil cylinder
(1) connected between using thread fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059824.1A CN108100922A (en) | 2016-11-25 | 2016-11-25 | The split type jack of piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059824.1A CN108100922A (en) | 2016-11-25 | 2016-11-25 | The split type jack of piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108100922A true CN108100922A (en) | 2018-06-01 |
Family
ID=62205432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611059824.1A Pending CN108100922A (en) | 2016-11-25 | 2016-11-25 | The split type jack of piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108100922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111453638A (en) * | 2020-03-26 | 2020-07-28 | 三一重型装备有限公司 | Deep hole piston rod of side-push jack and machining method and application thereof |
| WO2020223373A1 (en) * | 2019-05-02 | 2020-11-05 | Woodward, Inc. | Multiple piece piston |
-
2016
- 2016-11-25 CN CN201611059824.1A patent/CN108100922A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020223373A1 (en) * | 2019-05-02 | 2020-11-05 | Woodward, Inc. | Multiple piece piston |
| US11156186B2 (en) | 2019-05-02 | 2021-10-26 | Woodward, Inc. | Multiple piece piston |
| US11555470B2 (en) | 2019-05-02 | 2023-01-17 | Woodward, Inc. | Multiple piece piston |
| CN111453638A (en) * | 2020-03-26 | 2020-07-28 | 三一重型装备有限公司 | Deep hole piston rod of side-push jack and machining method and application thereof |
| CN111453638B (en) * | 2020-03-26 | 2023-09-15 | 三一重型装备有限公司 | Deep hole piston rod of side-pushing jack and processing method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108100916A (en) | Split type superhigh pressure sealing jack | |
| BR112013001756B1 (en) | hydraulic oil cylinder, hydraulic damping system, excavator and concrete pump truck | |
| CN210218296U (en) | Hydraulic cylinder sealing structure | |
| CN206511868U (en) | piston detachable jack | |
| CN108100922A (en) | The split type jack of piston rod | |
| CN110877870A (en) | Lifting platform | |
| CN214247860U (en) | Hydraulic cylinder with self-locking function | |
| CN101598158A (en) | A kind of embedded copper sleeve type hydraulic oil cylinder guide sleeve | |
| CN206278866U (en) | The double guiding jack of high-performance | |
| CN108100921A (en) | The multiple fastening type jack of rear end cap | |
| CN216577654U (en) | Bush press-fitting tool | |
| CN215257084U (en) | Split guide sleeve and oil cylinder with same | |
| CN214456462U (en) | Hydraulic jack with oil return structure | |
| CN108100918A (en) | It is multigroup to close sealed double guiding jack | |
| CN212154971U (en) | High-reliability anti-locking automobile engine piston | |
| CN212356376U (en) | Hydraulic jack | |
| CN210715926U (en) | High-pressure V-shaped sealing assembly | |
| CN206278869U (en) | Rear end cap bidirectional fastening jack | |
| CN206395766U (en) | A kind of jack piston having to top protective effect | |
| CN211501162U (en) | Pressure head oil cylinder mechanism of press-mounting machine | |
| CN215333736U (en) | Side trailer cylinder | |
| CN209835505U (en) | Long-stroke screw self-locking jack | |
| CN205388063U (en) | Davit hydro -cylinder | |
| CN202811625U (en) | Grass gripping oil cylinder for loading machine | |
| CN220599994U (en) | Plunger sealing structure resistant to severe greasy dirt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |