CN108100916A - Split type superhigh pressure sealing jack - Google Patents
Split type superhigh pressure sealing jack Download PDFInfo
- Publication number
- CN108100916A CN108100916A CN201611059062.5A CN201611059062A CN108100916A CN 108100916 A CN108100916 A CN 108100916A CN 201611059062 A CN201611059062 A CN 201611059062A CN 108100916 A CN108100916 A CN 108100916A
- Authority
- CN
- China
- Prior art keywords
- rear end
- wall
- end cap
- cylinder tube
- piston
- 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
-
- 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
-
- 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
-
- 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
- B66F2700/00—Lifting apparatus
- B66F2700/05—Hydraulic jacks
- B66F2700/055—Jacks with a single cylinder
- B66F2700/057—Pistons, e.g. telescopic; Cylinders or sealing joints; Hydraulic travel-limiting devices or shock damping
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of split type superhigh pressure sealing jack, including cylinder tube, piston component, punching covers and seal assembly, cylinder tube one end is equipped with rear end cap, piston component includes the split type piston head and piston rod being connected through a screw thread, logical piston head outer wall combines two kinds of seal combination modes using hole with stepped seal combination and hole quad seal, piston rod is combined between being covered with punching using axis with quad seal, rear end cap inside and outside wall is using axis step type seal combination, rear end cover outer wall is connected using screw thread with cylinder tube inner wall tightening, the lateral wall of rear end cap is fastened with punching set baffle by screw.Using more than structure, take a variety of seal combination modes, ensure that hydraulic oil will not leak, ensure oil pressure simultaneously, rear end cap uses twin fixed guide-vane connection mode, ensures job stability again, will not shift permeability, split type piston component adds load-taking capacity and is conveniently replaceable, it is ensured that the working performance of jack, it is opposite to prolong the service life.
Description
Technical field
The invention belongs to prestressing force hydraulic tensioning technical fields, and in particular to a kind of split type superhigh pressure sealing jack.
Background technology
Jack is the common device of building engineering field process, and the sealing performance of seal member is directly related to very heavy
Whether top can work normally.The jacking and off-load of usual jack are that completion is moved up and down in cylinder tube inner wall by piston
, piston promotes piston rod to rise load, and piston retraction then drives piston rod to shrink, and so as to off-load, influences jack work
The principal element of ability is the enabling capabilities of piston component and the sealability of hydraulic oil, when load rises, piston component
It is usually subjected to large compressive, it is permanent to use, stress rupture deformation easily occurs, so as to influence normal use, inside jack
If sealing it is bad, cause high hydraulic pressure oil seepage, so as to hydraulic pressure deficiency or unstable, jack state labile, reduce it is very heavy
It the service life on top and is easy to that accident occurs.
The content of the invention
For solution more than technical problem, the present invention provides a kind of split type superhigh pressure sealing jack.
To achieve the above object, technical scheme is as follows：
A kind of split type superhigh pressure sealing jack, is characterized by, including including cylinder tube, piston component, punching set,
Rear end cap is installed, the punching is set in the piston hole in the piston component, the piston in described cylinder tube one end
Component includes piston head and piston rod, and the piston rod has concave step close to rear end cap one end, and the step is equipped with
External screw thread, has the protrusion being adapted with the step on the piston head, which is equipped with and is adapted with the external screw thread
Internal thread, the step is longer than protrusion, and described project through is threaded on the step, and the protrusion is away from rear end cap
One side be close to the side wall of step；
The punching set is equipped with punching close to cylinder tube one end and covers baffle, which covers baffle close to cylinder tube bottom side
Extension with outwardly convex, the extension are equipped with perforative counterbore, the screw being adapted with counterbore are equipped in counterbore,
The outer wall of the rear end cap, which is connected through a screw thread, to be fixed on cylinder tube inner wall, which is equipped with close to cylinder tube bottom side
The holding section being adapted with the extension, which is fastened on the extending portion position, after the screw is hammered into through counterbore
In end cap；
The outer wall that the piston head is contacted with cylinder tube is set there are two guidance tape, the piston between two guidance tapes
It is set on head outer wall there are two A grooves, the stepped seal combination in hole is installed in the A grooves close to rear end cap one side, another
Hole is installed in one A grooves to be combined with quad seal, the piston rod is set with punching set contact surface close to rear end cap one end
There are two B grooves, in the B grooves be equipped with axis is combined with quad seal, and the rear end cap inner wall outer wall is all equipped with C grooves,
The stepped seal combination of axis is installed in its C groove；
The cylinder tube front end is equipped with drive end bearing bracket, and the drive end bearing bracket is between the cylinder tube and piston rod, before described
Also using axis step type seal combination between end cap and piston rod.
Using more than structure, the piston head of piston is arranged to piston rod it is split type, can with relative increase its bear should
Power ability, if while one of component when something goes wrong, also only need to change one of them, without integral replacing, reduce and safeguard
Cost, the whole service life of relative increase, using hole stepped seal combination and hole side between two guidance tapes
Two kinds of seal combination modes of shape seal combination effectively prevent hydraulic oil from being leaked from piston head and cylinder wall contact position, piston rod with
Effectively prevent hydraulic oil from being leaked along punching jacket wall using the combination of axis quad seal between punching set, rear end cap inside and outside wall uses axis
With stepped seal combination, effectively prevent hydraulic oil from being leaked from rear end cap and cylinder tube contact wall, according to each component endurance portion
Equally, a variety of seal combination modes, multiple-protection are taken, it is ensured that hydraulic oil will not leak, and ensure oil pressure, rear end cover outer wall
It is connected by screw thread with cylinder tube inner wall tightening, covering baffle with punching by screw by cylinder bottom one end lateral wall is fastenedly connected, from
Horizontal and vertical fixed rear end cap adds the stability of rear end cap, effectively prevents that rear end cap shakes in use
The situation of bias effect sealing performance, it is ensured that the working performance of jack extends its service life.
As preferred：The opposite side of the protrusion is equipped with round nut, and the round nut is set in the step close to rear end
On the external screw thread of lid.Using more than structure, protrusion is further fastened toward the sidewall extrusion of step, ensures to live by round nut
Chock plug will not loosen during the motion.
As preferred：Inner wall of the piston head close to drive end bearing bracket one side is equipped with B grooves, is also installed in the B grooves
There is axis to be combined with quad seal.Using more than structure, effectively prevent hydraulic oil and leaked along piston head and plunger rod contacts wall.
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 cylinder tube.
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 D grooves with plunger rod contacts inner wall close to one end of rear end cap, and the D is recessed
Solid lubrication copper sheathing is arranged in slot.Using more than structure, piston rod all contacts in contraction process with solid lubrication copper sheathing, can
Effective lubricating action is played to piston rod, keeps piston rod surface smooth, the rise for being more advantageous to piston rod is shunk.
As preferred：It is connected between the drive end bearing bracket and cylinder tube inner wall using thread fitting.Using more than structure, than passing
Being fastened on drive end bearing bracket on cylinder tube end wall by screw of system is more convenient.
Compared with prior art, the beneficial effects of the invention are as follows：
The piston head of piston and piston rod are arranged to split by split type superhigh pressure sealing jack provided by the invention
Formula, can with relative increase its ability that meets with stresses, if while one of component when something goes wrong, also only need to change wherein one
It is a, without integral replacing, reduce maintenance cost, the whole service life of relative increase uses hole between two guidance tapes
Two kinds of seal combination modes are combined with stepped seal combination and hole quad seal, effectively prevent hydraulic oil from piston head and oil
Cylinder barrel wall contact position leaks, and piston rod is combined between being covered with punching using axis with quad seal effectively prevents hydraulic oil along punching set
Wall leaks, and rear end cap inside and outside wall effectively prevents hydraulic oil from being contacted from rear end cap with cylinder tube using axis step type seal combination
Wall leaks, the same according to each component endurance portion, takes a variety of seal combination modes, multiple-protection, it is ensured that hydraulic oil will not be sent out
Raw leakage, ensures oil pressure, and rear end cover outer wall is connected by screw thread with cylinder tube inner wall tightening, passes through spiral shell by cylinder bottom one end lateral wall
Nail is fastenedly connected with punching set baffle, from horizontal and vertical fixed rear end cap, is added the stability of rear end cap, is effectively prevented
During use, rear end cap shakes the situation of bias effect sealing performance, it is ensured that the working performance of jack, extending it makes
Use the service life.
Description of the drawings
Fig. 1 is the sectional view of one embodiment of the invention；
Fig. 2 is partial enlarged view at A in Fig. 1；
Fig. 3 is that punching covers baffle sectional view in Fig. 1；
Fig. 4 is rear end cap sectional 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.
Referring to figs. 1 to split type superhigh pressure sealing jack shown in Fig. 4, mainly include cylinder tube 1, piston component 2, wear
Heart set 3,1 one end of cylinder tube are equipped with rear end cap 11, and punching set 3 is set in the piston hole 22 in piston component 2, piston component
2 include piston head 20 and piston rod 21, and piston rod 21 sinks concave close to 11 one end of rear end cap with 11 one end of end cap backwards
Step 211, step 211 are equipped with external screw thread, have the protrusion 201 being adapted with step 211, the protrusion 201 on piston head 20
The internal thread being adapted with external screw thread is equipped with, step 211 is longer than protrusion 201, and protrusion 201 is threadedly attached in step 211
On, the side wall of step 211 is close in raised 201 one sides away from rear end cap 11, and round nut is equipped in the opposite side of the protrusion 201
23, the round nut 23 is fastened on the step 211 on the external screw thread of rear end cap 11.
Punching set 3 is equipped with punching close to 1 one end of cylinder tube and covers baffle 31, which covers baffle 31 close to 1 bottom of cylinder tube
One side has the extension 311 of outwardly convex, which is equipped with perforative counterbore 312, be equipped in counterbore 312 with
The adaptable screw 313 of counterbore 312, the outer wall of rear end cap 11, which is connected through a screw thread, to be fixed on 1 inner wall of cylinder tube, the rear end cap
11 are equipped with the holding section 111 being adapted with extension 311 close to 1 bottom side of cylinder tube, which is fastened on extending portion
311 positions, screw 313 are hammered into through counterbore 312 in rear end cap 11.
Piston head 20 sets the guidance tape 4 there are two tetrafluoro bronze material with the outer wall that cylinder tube 1 contacts, in two guidance tapes
It is set on 20 outer wall of piston head between 4 there are two A grooves, hole ladder is installed in the A grooves close to 11 one side of rear end cap
Type seal combination 60, is equipped with hole quad seal combination 61 in another A grooves, and piston rod 21 covers 3 contact surfaces with punching and leans on
Nearly 11 one end of rear end cap is set there are two B grooves, and axis quad seal combination 62,11 inner wall of rear end cap are equipped in the B grooves
Outer wall is all equipped with C grooves, and the stepped seal combination 63 of axis is equipped in its C groove.
1 front end of cylinder tube be equipped with drive end bearing bracket 12, drive end bearing bracket 12 positioned at cylinder tube 1 and piston rod 21 between, drive end bearing bracket 12 and
It is connected between cylinder tube 1 using thread fitting, the stepped seal combination 63 of axis is also used between drive end bearing bracket 12 and piston rod 12,
Inner wall of the piston head 20 close to 12 one side of drive end bearing bracket is equipped with B grooves, and be also equipped with axis in the B grooves is combined with quad seal
62。
Drive end bearing bracket 12 and the end of the described one end of 21 contact surface of piston rod away from rear end cap 11 are equipped with J-type bone free dustband
5, drive end bearing bracket 12 contacts inner wall with piston rod 21 and is equipped with D grooves 120 close to one end of rear end cap 11, is arranged in the D grooves 120
There is solid lubrication copper sheathing 121.
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 cylinder tube 1, promotes piston head 20 in oil cylinder
It is moved along in cylinder 1, and piston head 20 is connected with piston rod 21, so as to which 21 ejection cylinder cylinder 1 of piston rod be driven to play lifting lotus
The effect of load, 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, living
Stopper rod 21 is then slowly withdrawn inside cylinder tube 1, in 21 telescopic process of piston rod, by hole stepped seal combination 60 and hole
Effectively prevent hydraulic oil from being leaked along piston head 20 and 1 contact wall of cylinder tube with quad seal combination 61, rear end cap uses rank by axis
Ladder type seal combination 63 prevents hydraulic oil from being leaked along the inside and outside wall of rear end cap, and axis side is used between piston rod 21 and punching set 3
Shape seal combination 62 prevents hydraulic oil from covering 3 outer wall spill and leakages along punching, takes multi-sealed combination, effective sealing fluid pressure oil,
Spill and leakage is reduced, ensures oil pressure, simultaneously as the outer wall and side wall of rear end cap 11 are fastened on 1 He of cylinder tube by screw thread and screw respectively
On punching set baffle 31, both direction is fixed, and has fully ensured that the fixation of rear end cap, and will not shake offset in use,
Prevent oil leak pressure release, piston rod, using split type threaded connection, can preferably ensure that it meets with stresses and resists with piston head
Degree of fatigue, even if occur parts damages can also to it is more preferable one of them, it is opposite to prolong so as to ensure the working performance of jack
The service life of long jack.
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 superhigh pressure sealing jack, it is characterised in that：Including cylinder tube (1), piston component (2), punching set
(3), described cylinder tube (1) one end is equipped with rear end cap (11), and the punching set (3) is set in the piston component (2)
In piston hole (22), the piston component (2) includes piston head (20) and piston rod (21), and the piston rod (21) is close to rear end
Covering (11) one end has concave step (211), and the step (211) is equipped with external screw thread, has on the piston head (20)
The protrusion (201) being adapted with the step (211), the protrusion (201) are equipped with the internal thread being adapted with the external screw thread,
The step (211) is longer than raised (201), and the protrusion (201) is threadedly attached on the step (211), described convex
Play the side wall that step (211) are close in the one side of (201) away from rear end cap (11)；
The punching set (3) is equipped with punching set baffle (31) close to cylinder tube (1) one end, and punching set baffle (31) is close to oil cylinder
Cylinder (1) bottom side has the extension (311) of outwardly convex, which is equipped with perforative counterbore (312), sinks
The screw (313) being adapted with counterbore (312) is equipped in hole (312), the outer wall of the rear end cap (11) is connected through a screw thread
It is fixed on cylinder tube (1) inner wall, which is equipped with and the extension (311) close to cylinder tube (1) bottom side
Adaptable holding section (111), the holding section (111) are fastened on the extending portion (311) position, and the screw (313) passes through heavy
Hole (312) is hammered into rear end cap (11)；
The piston head (20) is set with the outer wall that cylinder tube (1) contacts there are two guidance tape (4), in two guidance tapes (4)
Between piston head (20) outer wall on set there are two A grooves, being equipped with hole in the A grooves close to rear end cap (11) one side uses rank
Ladder type seal combination (60), in another A grooves be equipped with hole is combined (61) with quad seal, the piston rod (21) with it is described
Punching set (3) contact surface is set close to rear end cap (11) one end there are two B grooves, and axis quad seal is equipped in the B grooves
It combines (62), rear end cap (11) the inner wall outer wall is all equipped with C grooves, and the stepped sealing group of axis is equipped in its C groove
It closes (63)；
Cylinder tube (1) front end is equipped with drive end bearing bracket (12), and the drive end bearing bracket (12) is located at the cylinder tube (1) and piston rod
(21) between, also using axis step type seal combination (63) between the drive end bearing bracket (12) and piston rod (12).
2. split type superhigh pressure sealing jack according to claim 1, it is characterised in that：It is described protrusion (201) it is another
One side is equipped with round nut (23), and the round nut (23) is fastened on the step (211) on the external screw thread of rear end cap (11).
3. split type superhigh pressure sealing jack according to claim 1, it is characterised in that：The piston head (20) is close
The inner wall of drive end bearing bracket (12) one side is equipped with B grooves, and be also equipped with axis in the B grooves is combined (62) with quad seal.
4. split type superhigh pressure sealing jack according to claim 1, it is characterised in that：Two guidance tapes (4)
For tetrafluoro bronze guidance tape.
5. split type superhigh pressure sealing jack according to claim 1, it is characterised in that：The drive end bearing bracket (12) and institute
The end for stating the one end of piston rod (21) contact surface away from rear end cap (11) is equipped with J-type bone free dustband (5).
6. split type superhigh pressure sealing jack according to claim 1, it is characterised in that：The drive end bearing bracket (12) is with living
Stopper rod (21) contacts inner wall and is equipped with D grooves (120) close to one end of rear end cap (11), and solid is arranged in the D grooves (120)
Lubricate copper sheathing (121).
7. split type superhigh pressure sealing jack according to claim 1, it is characterised in that：The drive end bearing bracket (12) and oil
It is connected between cylinder barrel (1) using thread fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059062.5A CN108100916A (en) | 2016-11-25 | 2016-11-25 | Split type superhigh pressure sealing jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611059062.5A CN108100916A (en) | 2016-11-25 | 2016-11-25 | Split type superhigh pressure sealing jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108100916A true CN108100916A (en) | 2018-06-01 |
Family
ID=62204436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611059062.5A Pending CN108100916A (en) | 2016-11-25 | 2016-11-25 | Split type superhigh pressure sealing jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108100916A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185675A (en) * | 2019-06-24 | 2019-08-30 | 新余钢铁股份有限公司 | A kind of hydraulic cylinder piston drive end bearing bracket sealing structure |
| CN110329945A (en) * | 2019-07-29 | 2019-10-15 | 三一重型装备有限公司 | Use the jack and hydraulic support of aqueous medium |
| CN113565829A (en) * | 2021-08-10 | 2021-10-29 | 大大科技(宁国)有限公司 | Large-tonnage flange type jacking hydraulic cylinder |
| CN113772576A (en) * | 2021-09-22 | 2021-12-10 | 王志君 | Annular hydraulic cylinder and method for jacking bridge and building by using annular hydraulic cylinder |
| CN113898637A (en) * | 2021-10-14 | 2022-01-07 | 江苏恒立液压股份有限公司 | Clamping oil cylinder |
-
2016
- 2016-11-25 CN CN201611059062.5A patent/CN108100916A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185675A (en) * | 2019-06-24 | 2019-08-30 | 新余钢铁股份有限公司 | A kind of hydraulic cylinder piston drive end bearing bracket sealing structure |
| CN110329945A (en) * | 2019-07-29 | 2019-10-15 | 三一重型装备有限公司 | Use the jack and hydraulic support of aqueous medium |
| CN113565829A (en) * | 2021-08-10 | 2021-10-29 | 大大科技(宁国)有限公司 | Large-tonnage flange type jacking hydraulic cylinder |
| CN113772576A (en) * | 2021-09-22 | 2021-12-10 | 王志君 | Annular hydraulic cylinder and method for jacking bridge and building by using annular hydraulic cylinder |
| CN113898637A (en) * | 2021-10-14 | 2022-01-07 | 江苏恒立液压股份有限公司 | Clamping oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |
|
| WD01 | Invention patent application deemed withdrawn after publication |