CN104692281B - Three-stage double-acting self-fitting hydraulic jack - Google Patents
Three-stage double-acting self-fitting hydraulic jack Download PDFInfo
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- CN104692281B CN104692281B CN201510141784.4A CN201510141784A CN104692281B CN 104692281 B CN104692281 B CN 104692281B CN 201510141784 A CN201510141784 A CN 201510141784A CN 104692281 B CN104692281 B CN 104692281B
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- 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
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
-
- 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
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a three-stage double-acting self-fitting hydraulic jack. The three-stage double-acting self-fitting hydraulic jack comprises an outer oil cylinder, a primary piston cylinder block, a secondary piston cylinder block and a tertiary piston cylinder block which are in sleeving connection coaxially sequentially, and further comprises a plurality of cylinder block inclining portions, and the cylinder block inclining portions are arranged between the outer wall of the primary piston cylinder block and the inner wall of the outer oil cylinder uniformly and between the upper wall of the primary piston cylinder block and the lower wall of the outer oil cylinder correspondingly. Each cylinder block inclining portion comprises a hollow tube sleeving a spring connectively, a solid tube is connected to the other end of the spring, and the external diameter of the solid tube is matched with the internal diameter of the hollow tube. The three-stage double-acting self-fitting hydraulic jack has the advantages that by the aid of the cylinder body inclining portions, the primary piston cylinder block achieves that the three-stage piston cylinder blocks translate along an optional direction and rotate within a specific three-dimensional space in an inclining manner under finite constraint of stainless steel segmentation blocks, so that cylinder jamming caused by the fact that the cylinder blocks deflect irregularly under the action of upper dynamic load is improved.
Description
Technical field
The present invention relates to hydraulic jack technical field, more particularly to a kind of three-level double acting self-bonding hydraulic jack.
Background technology
In bridge jacking work progress, conventional hydraulic jacks are by oil cylinder, piston, sealing ring, base and hydraulic oil etc.
Part is constituted, and coordinates programmable logic controller (PLC) (Programmable Logic Controller, PLC) system, balance oil circuit
Distributor and high-pressure oil pipe, hydraulic oil single-acting oil transfer pump and precise displacement monitoring device (displacement transducer) are realizing bridge
Entirety or Local Members synchronization of jacking up and falling operation.And at present major part elevated bridge top girder construction adopts cored slab
Beam, box-girder, trough girder and T-shaped plate-girder, and the primary structure of girder is bent cap, and rubber is arranged between beam body and bent cap
Seat, can reach lower cover girder construction until pile foundation by bridge floor load, while top beam body itself is crept product because of temperature, load and concrete
Raw micro-strain can by rubber support on behalf of elimination, but after rubber support is deformed and damages, due to top beam body with
Lower cover girder construction gap is too small, and traditional single-acting or double-action hydraulic jack are highly excessive (high due to cylinder body itself
In 4cm), it is impossible to lay in the small space into gap less than or equal to 4cm.Single-acting or double acting thin type jack can only be laid
PLC control system and relevant device is coordinated to realize the micro- jacking of top beam body and bearing replacement operation, but traditional single-acting or double
Act on the micro- jacking operation of slim jack and there is problems with and drawback：In the case of bridge floor not close traffic, tradition slim thousand
When jin top jacking is operated, easily it is subject to the huge load action in top and card cylinder phenomenon occurs, or due to cylinder body itself not about
Beam, causes fuel delivery excessive, and generation piston departs from cylinder body and oil leakage phenomenon and jacking fails.
The content of the invention
In view of the drawbacks described above of prior art, the invention solves the problems that be conventional hydraulic jacks cylinder body itself not about
Beam, causes fuel delivery excessive, and the technical problem that piston departs from cylinder body and oil leakage phenomenon and jacking failure occurs.
For achieving the above object, the invention provides a kind of three-level double acting self-bonding hydraulic jack, including：It is coaxial according to
The secondary outside oil cylinder for connecting together, first order piston/cylinder, second level piston/cylinder and third level piston/cylinder composition；It is described
Also include multiple cylinder body rakes in jack, the cylinder body rake is uniformly arranged on the outer wall of the first order piston/cylinder
And the inwall of the outside oil cylinder between, and the corresponding upper wall for being arranged at the first order piston/cylinder in position with it is described
Between the lower wall of outside oil cylinder；The cylinder body rake includes the spring of socket in hollow cylinder, the hollow cylinder, the bullet
The solid cylinder of spring other end connection, external diameter and the internal diameter of the hollow cylinder of the solid cylinder match；Described first
Cross protuberance is provided with the top of level piston/cylinder, the corner of the cross protuberance is provided with manual centering rectification
Device, the manual centering rectification device includes the spring being fixedly connected with the first order piston/cylinder, is connected with the spring
Hook..
Used as the preferred of above-mentioned technical proposal, the number for arranging the cylinder body rake is 5.
Used as the preferred of above-mentioned technical proposal, the second level piston/cylinder and third level piston/cylinder are respectively by four sons
Cylinder body is constituted.
Used as the preferred of above-mentioned technical proposal, the first order piston/cylinder is internally provided with and is communicated to the second level work
The asphalt channel of plug cylinder body, is provided with bidirection press valve on the asphalt channel.
Used as the preferred of above-mentioned technical proposal, the bidirection press valve opening and closing threshold value is 0.5MPa.
Used as the preferred of above-mentioned technical proposal, the three-level double acting self-bonding hydraulic jack includes the first oil-leakage-prevention screen
Barrier, the first oil-leakage-prevention barrier includes the oil removal material that outside oil cylinder inner roof wall is attached, and the free end of the oil removal material sets
Compressed part is equipped with, the compressed part is compressed with the first order piston/cylinder, the compressed part is including high-strength spring and not
Rust steel ball, the first oil-leakage-prevention barrier also includes high polymer elastic rubber slab, one end of the high polymer elastic rubber slab
It is fixedly connected with the stainless steel ball, the other end is connected with hold down gag, one end of the hold down gag and the first order
Piston/cylinder connects, and the other end is connected with the oil removal material；
The three-level double acting self-bonding hydraulic jack also includes the second oil-leakage-prevention barrier, the second oil-leakage-prevention barrier
Oil circulation hole is offered including the segmentation bulk bottom arranged in outside oil cylinder, the outside oil cylinder inner side base is set to
Radiused configuration.
The invention has the beneficial effects as follows：
The three-level double acting self-bonding hydraulic jack of the offer of the present invention, first order piston/cylinder utilizes cylinder body rake
Realize three-level piston/cylinder along any direction translation and certain three in the case of stainless steel segmentation bulk piecemeal finite constraint
Dimension space tilt rotation.Cylinder body and this body space of jack are set, are improved cylinder body and is produced irregular deflection by top Under Dynamic Load
And card cylinder phenomenon.
The technique effect of the design, concrete structure and generation of the present invention is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of the three-level double acting self-bonding hydraulic jack that one embodiment of the invention is provided；
Fig. 2 is three-level double acting self-bonding hydraulic jack A-A profile in Fig. 1；
Fig. 3 is three-level double acting self-bonding hydraulic jack B-B profile in Fig. 1；
Fig. 4 is the knot that the first order cylinder body of three-level double acting self-bonding hydraulic jack provided in an embodiment of the present invention stretches out
Structure schematic diagram；
Fig. 5 is the three-level double acting self-bonding liquid of three-level double acting self-bonding hydraulic jack provided in an embodiment of the present invention
The structural representation that pressure second and third grade of cylinder body of jack stretches out；
Fig. 6 is that three-level double acting self-bonding hydraulic jack provided in an embodiment of the present invention and oil mass automatically control distribution liquid
The structural representation of pressure pumping station system；
Fig. 7 is that three-level double acting self-bonding hydraulic jack first order cylinder body provided in an embodiment of the present invention stretches out and uses shape
State schematic diagram；
Fig. 8 is that three-level double acting self-bonding hydraulic jack second level cylinder body provided in an embodiment of the present invention stretches out and uses shape
State schematic diagram；
Fig. 9 is that three-level double acting self-bonding hydraulic jack third level cylinder body provided in an embodiment of the present invention stretches out and uses shape
State schematic diagram；
Figure 10 is three-level double acting self-bonding hydraulic jack three-level cylinder body self-bonding plate-girder provided in an embodiment of the present invention
The use state schematic diagram of bottom surface；
Figure 11 is three-level double acting self-bonding hydraulic jack cross-sectional structure schematic diagram provided in an embodiment of the present invention；
Figure 12 is that the structure of the sealing structure of the three-level double acting self-bonding hydraulic jack that C portions provide in Fig. 2, Fig. 3 is put
Big schematic diagram；
Figure 13 is the oil mass automatic statistical device and cylinder of the three-level double acting self-bonding hydraulic jack that D portions provide in Fig. 2
The structure enlarged diagram that in vivo oil circuit punches；
Figure 14 is the structure of the manual centering rectification device of the three-level double acting self-bonding hydraulic jack that E portions provide in Fig. 2
Enlarged diagram；
Figure 15 is the three-level cylinder body and the structure of oil circuit of the three-level double acting self-bonding hydraulic jack that F portions provide in Fig. 3
Enlarged diagram；
Figure 16 be in Fig. 3 G portions provide three-level double acting self-bonding hydraulic jack first order cylinder body up and down stretch limit
The structural representation of position device；
Figure 17 is the high polymer elastic rubber slab of three-level double acting self-bonding hydraulic jack provided in an embodiment of the present invention
The structural representation of oil removal seal approach；
Figure 18 is that the structure of the oil removal seal construction of the three-level double acting self-bonding hydraulic jack that H portions provide in Figure 11 is shown
It is intended to；
Figure 19 is the double acting synchronous jacking device part composition structural blast schematic diagram that further embodiment of this invention is provided.
Specific embodiment
Refering to shown in 1～Figure 19 of accompanying drawing, present embodiments providing a kind of three-level double acting self-bonding hydraulic jack 7 and oil
Amount automatically controls distribution hydraulic power unit system 44.Every external structure of three-level double acting self-bonding hydraulic jack 7 is by the first order
Piston/cylinder 6, second level piston/cylinder 5, third level piston/cylinder 1, outside oil cylinder 43, digital flowmeter 8 are (equipped with digital stream
Gauge data wire 22), oil cylinder oil inlet mouth 9 collectively constitute, as shown in Fig. 1 and Figure 15, second level piston/cylinder 5 and third level piston
Cylinder body 1 is arranged at the inside of first order piston/cylinder 6.Oil mass automatically controls distribution hydraulic power unit system 44 by the way that multiple stage is identical
The three-level double acting self-bonding hydraulic jack 7 of type specification is respectively arranged at needs jacking bridge beam body 35 and lower support thing
Between (or basis) 36.
Three-level double acting self-bonding hydraulic jack 7, including：The coaxial outside oil cylinder 43, first for connecting together successively
Level piston/cylinder 6, second level piston/cylinder 5 and third level piston/cylinder 1 are constituted；Second level piston/cylinder 5 and third level piston
Cylinder body 1 is made up of respectively four sub- cylinder bodies.Three-level double acting self-bonding hydraulic jack 7 is due to being classified jacking, and three-level piston
Cylinder body is respectively divided into four sub- cylinder bodies, and as shown in Fig. 7～Figure 10, three-level double acting self-bonding hydraulic jack 7 can be according to scene
The adjacent beam body bottom in actual condition self-bonding hinge seam both sides so that adjacent beams body can realize that uniform stressed and synchronization of jacking up are returned
Fall, for the more traditional slim jack of the superior service behaviour in the part, having significantly lifted and improve, and is more applicable for mesh
The complex working condition of front all kinds of jack-up constructions.
By being improved design to traditional slim jack jacking cylinder geometrical body construction, tradition slim thousand is overcome
There is the adjacent plate-girder bottom that cannot fit in the jacking plane of the overall contact surface in jin top, successfully make each top of ultra-thin jack
Oil-lifting jar unit can be close to the adjacent panels soffit that there is the discrepancy in elevation, and realize that adjacent panels back lift is uniform during jacking
Distribution and dynamic equilibrium top power is formed, while innovative design adjustment handle, high-altitude application workman can be easy to from arbitrarily angled right
The putting position of ultra-thin jack and the jacking contact surface of jacking cylinder unit carry out real-time deviation correcting and centering, further ensure that
Ultra-thin jack top lift is lifted in being uniformly distributed for adjacent panels soffit with dynamic synchronization, and keeps pushing up force homeostasis, together
The reasonability of Shi Gaishan jackings operation, prevents and avoids to cause secondary " destruction " to cutting with scissors seam between adjacent plate-girder, is that adjacent plate-girder is same
Step jack-up construction creates preferable operating condition.
During in order to realize jack jacking can along any direction translation and three certain bit space tilt rotations,
Also include multiple cylinder body rakes in jack, cylinder body rake is uniformly arranged on the outer wall of first order piston/cylinder 6 and outside
Between the inwall of oil cylinder 43, and position is corresponding is arranged under the upper wall of first order piston/cylinder 6 and outside oil cylinder 43
Between wall；Cylinder body rake includes the spring 20 of socket in hollow cylinder 18, hollow cylinder 18, and it is solid that the spring other end connects
Cylinder 19, external diameter and the internal diameter of hollow cylinder 18 of solid cylinder 19 match.The number of cylinder body rake is preferably 5.It is empty
Heart cylinder 18, solid cylinder 19 can select stainless steel.With reference to shown in accompanying drawing 2, accompanying drawing 3 and accompanying drawing 15, first order piston
Cylinder body 6 can utilize the hollow flexible cylinder 18 of cylinder body rake, i.e. stainless steel, the high-strength bullet of stainless steel solid cylinder 19, stainless steel
The construction of spring 20 realizes three-level piston/cylinder 6,5,1 along arbitrarily side in the case of the stainless steel segmentation piecemeal finite constraint of bulk 21
To translation and certain three dimensions tilt rotation.
As shown in Fig. 3 and Figure 11, segmentation bulk is located at the hydraulic jack outside inner wall of oil cylinder 43, and is close to stainless
The hollow flexible cylinder 18 of steel and stainless steel solid cylinder 19.The effect of segmentation bulk mainly has at 2 points：1. splitting bulk can be by
Flexible cylinder 18 hollow with the stainless steel that first order piston/cylinder 6 is connected and stainless steel solid cylinder 19 carry out region segmentation limit
Position (being divided into 5 pieces of moving areas), it is ensured that the hollow flexible cylinder 18 of 5 stainless steels that first order piston/cylinder 6 is connected and not
The solid cylinder 19 of rust steel carries out flexible translation and vertically movable respectively along specified direction；2. by opening in segmentation bulk bottom
The semicircle hole of chisel, when oil pump is to fuel feeding in hydraulic jack, with the oil mass and oil in outside oil cylinder 43 inside jack
The rising of pressure, three-level piston/cylinder stretches out respectively is close to beam body bottom and stress, in 5 pieces of scalable translations of segmentation bulk segmentation
If situations such as with there is unbalance stress in vertically movable region, can be in real time by the semicircle hole of segmentation bulk bottom by stress
Hydraulic oil guidance quality flows to stress (hydraulic pressure) smaller area in (hydraulic pressure) large area, so that the larger area of stress (hydraulic pressure)
Uniformly sink behind the three-level cylinder body self-bonding beam body bottom in domain, and while the three-level cylinder body self-bonding beam of stress (hydraulic pressure) smaller area
Body uniformly stretches out (or floating) behind bottom, by stress (hydraulic pressure) large area The hydraulic oil different with stress (hydraulic pressure) smaller area
Guarantee the stress balance of each stress area and the purpose of hydraulic pressure reasonable distribution with the hydraulic pressure difference of discrepancy in elevation generation.
By improving cylinder interior tectonic sieving, the deflection of cylinder body any direction in three dimensions can be realized, while
Realize vertically moving in any direction translation and vertical cylinder body surface in-plane of the cylinder body in itself table plane, Er Qietong
The necessary cylinder body of setting and this body space of jack are crossed, cylinder body is greatly improved and is produced irregular deflection and card cylinder by top Under Dynamic Load
Phenomenon.And by the improvement to jacking housing structure, the constraint during cylinder body jacking is increased, and to cylinder interior structure
Dual oil card is set, even if a large amount of fuel feeding of oil pump are entered behind ultra-thin jack inside, it is also possible to prevent and avoid tradition slim thousand
The de- cylinder phenomenon of oil leak and cylinder body produced during jin top jacking, makes jacking process and result success reliable, and causes all kinds of numbers
According to closer to actual monitoring data, so as to ensure that fidelity and the reliability of jacking travel displacement data and jack top force data
Confidence level.
In order to the jacking step by step and automatic order that rationally control three-level double acting self-bonding hydraulic jack 7 fall after rise, the
First stage piston cylinder body 6 is internally provided with the asphalt channel for being communicated to second level piston/cylinder 5, and Bidirectional pressure is provided with asphalt channel
Power valve.By first order cylinder interior asphalt channel 4, bidirection press valve 14 and cylinder body rake inside first order piston/cylinder 6
Constitute, as shown in Fig. 2, Fig. 3 and Figure 15.Preferably, the setting of bidirection press valve 14 can be considered with 0.5MPa to open and closing
The boundary closed, if the hydraulic oil pressure of the bottom of first order piston/cylinder 6 is less than 0.5Mpa, bidirection press valve 14 is in closing shape
State, hydraulic oil will continue to press on first order piston/cylinder 6 upwards jacking until reach three-level double acting self-bonding hydraulic jack 7
Till the top of inner surface, if the oil inside offering amount of now three-level double acting self-bonding hydraulic jack 7 continues increasing, oil pressure and increases
Until during more than 0.5Mpa, bidirection press valve 14 is opened, then hydraulic oil will enter the along first order cylinder interior asphalt channel 4
Second piston cylinder body 5 or even third level piston/cylinder 1, and promote three-level piston/cylinder 6,5,1 to be classified jacking, and when three-level is lived
When the classification of plug cylinder body 6,5,1 falls after rise, because external pressure and interior oil are pressed with a pressure differential, when oil pressure pressure is less than 0.5Mpa
When, contribute to that three-level piston/cylinder 6,5,1 is pushed into receipts cylinder automatically using atmospheric pressure.
Centering rectification operation for convenience, the top of first order piston/cylinder 6 is provided with cross protuberance 3, cross
The corner of protuberance is provided with manual centering rectification device 2, and manual centering rectification device 2 includes being fixed with first order piston/cylinder 6 and connects
The spring 12 for connecing, the hook being connected with spring 12.Spring 12 can select stainless steel, by being welded on manual centering rectification
The drawknot and rivet 10 of the hook and stainless steel spring 12 at device 2 and the two ends of first order piston/cylinder 6 and welding material 11 (or closure
Ointment) rotating shaft of manual centering rectification device 2 is fixed on first order piston/cylinder 6, as shown in figure 14, realize that manual centering is entangled
Partially device 2 rotate it is drop-down use and above push away retraction function, and using the adjacent beam body of the monolateral alignment of cross of cross protuberance 3
Gap or hinge seam position carry out centering rectification operation.
In order to prevent the leakage of hydraulic oil, three-level double acting self-bonding hydraulic jack 7 to be provided with multiple oil removal barriers, bag
The first oil-leakage-prevention barrier is included, the first oil-leakage-prevention barrier includes the oil removal material 17 that the outside inner roof wall of oil cylinder 43 is attached, oil removal material
17 free end is provided with compressed part, compresses with first order piston/cylinder 6, and compressed part includes high-strength spring 15 and stainless steel
Ball 16, the first oil-leakage-prevention barrier also include high polymer elastic rubber slab 13, one end of high polymer elastic rubber slab 13 with it is stainless
Steel ball 16 is fixedly connected, and the other end is connected with hold down gag, and one end of the hold down gag connects with the first order piston/cylinder 6
Connect, the other end is connected with oil removal material 17.Connection between high polymer elastic rubber slab 13 and stainless steel ball 16 may refer to
Figure 12, after angle steel piece 28 is using the riveting of rivet 29, adds stifled fluid sealant 27 and achieves a fixed connection, naturally it is also possible to using welding
Etc. connected mode.Likewise, high polymer elastic rubber slab 13 is connected to adopt with hold down gag being adopted by angle steel piece 28
After rivet 29 is riveted, add stifled fluid sealant 27 and achieve a fixed connection.Hold down gag is included with the hollow retracting cylinder of high strong spring stainless steel
Body 24 and stainless steel solid cylinder 25.Said structure is it is achieved that the compression dress of the part as first order piston/cylinder 6
Put, will be in three-level double acting self-bonding hydraulic pressure thousand with the hollow flexible cylinder 24 of high strong spring stainless steel and stainless steel solid cylinder 25
It is close in outpacking rubber during jin 7 jackings of top and falling and fills out alumina silicate fibre (or mineral wool) oil removal material 17, common shape
Into prevent three-level double acting self-bonding hydraulic jack 7 hydraulic pressure oil supply amount is excessive or there is oil leak during too high oil pressure cut oil
With first " barrier " of oil removal.
Further, since employ compressed part, including high-strength spring 15, stainless steel ball 16, stainless steel solid cylinder 30,
Construction type of attachment between the hollow flexible cylinder 31 of stainless steel, referring specifically to Figure 16, the compressed part structure is in three-level piston cylinder
The jacking of body 6,5,1 and falling are received during cylinder because three-level piston/cylinder 6,5,1 occurs the translation on any direction and three-dimensional space
Between tilt rotation when keep closely connected first order piston/cylinder surface, in the falling plunger and its Special Eccentric of PLC hydraulic power units 39
During the oil return pump component reversion operating pumpback hydraulic oil of the pumpback oil such as wheel and motor, certain lower pressure is helped to create
So that three-level piston/cylinder 6,5,1 smoothly falls after rise receives cylinder automatically, while reducing three-level piston/cylinder 6,5,1 there is any direction
On the translation and three dimensions tilt rotation frictional force that produces when moving.
In order to prevent the leakage of hydraulic oil, between first order piston/cylinder 6 and outside oil cylinder 43 the second leakproof is additionally provided with
Oily barrier, the second oil-leakage-prevention barrier includes：The bottom of segmentation bulk 21 arranged in outside oil cylinder offers oil circulation hole 23,
As shown in figure 13, and on the inner side base of outside oil cylinder 43 base radiused configuration 26 in outside oil cylinder 43 is set, is conducive to three-level to live
Plug cylinder body 6,5,1 is realized under the outside inside of oil cylinder 43 and three-level piston/cylinder 6,5,1 under by the effect of uneven upper load
The oil mass layout of the hydraulic oil in portion is reassigned and oil pressure autobalance, while realizing hydraulic oil during hydraulic oil fuel feeding jacking
Oil feeding line along the inner surface inclined-plane bottom of the outside oil cylinder 43 of three-level double acting self-bonding hydraulic jack 7 to lower and above push away
The normal operation of dynamic three-level piston/cylinder 6,5,1, it is to avoid and prevent the oil circuit of traditional fuel feeding toward three-level double acting self-bonding hydraulic pressure thousand
The inner surface of the outside oil cylinder 43 on jin top 7 is reverse upwards and the caused oil leakage phenomenon of row.Meanwhile, three-level double acting self-bonding hydraulic pressure
The first order piston/cylinder 6 of jack 7 rely primarily on the connection of the outside inside of oil cylinder 43 be arranged on first order piston/cylinder 6 and
The machine that the high polymer elastic rubber slab 13 of the inside both sides of outside oil cylinder 43, high-intensity sealing glue 27, angle steel piece 28, rivet 29 are constituted
Tool connects to realize, and connects for space-closed, such as Fig. 2, Fig. 3, Figure 12 and Figure 17, and can be formed prevents liquid during jacking
Force feed oil pressure is excessive or oil mass excessive and second capsule containment oil " barrier " that leaks outside.
In order to adapting to bridge beam body for needs jackings such as T-shaped beam, freely-supported hollow slab girder, box beam and trough girders and propping up
The operating mode that seat is changed, the body height of three-level double acting self-bonding hydraulic jack 7 is preferably designed less than 4cm.Due to adopting three
The level classification jacking of piston/cylinder 6,5,1, as shown in Figure 4, Figure 5, the jacking row of the current existing slim jack of its jacking stroke ratio
Big 2cm of journey or so.
The factor for considering is needed to depend primarily on beam body when jack body height decision design ultra-thin to hydraulic pressure
Gap at the top of bottom and bent cap, the altitude information of the rubber support of the beam body bottom support for even being adopted as according to
According to.Constructed for operating mode according to actual field, gap between hollow slab girder bottom surface and its lower cover top surface of the beam (or hollow slab girder beam
The rubber support height that body bottom adopts) between 31mm～42mm, and practical experience is combined, if hydraulic jack body is high
Spend thin, then it is not enough to be susceptible to cylinder body lifting surface area, can cause Lack of support, so as to the cylinder body for causing hydraulic jack breaks
It is bad, and hydraulic jack body height is blocked up, then in cannot being laid in the gap of plate-girder bottom surface and bent cap top surface.In sum,
Ultrathin hydraulic jack body height is high less than 4cm, i.e. 3.8cm.It is (hollow according to live practice of construction operating mode and load situation
Plate-girder deadweight+vehicular load) cutting with scissors what is born required for the ultrathin hydraulic jack laid under crack structure position between hollow slab girder
Load is reversely calculated, and the specified top lift and jacking contact area of the hydraulic jack of research and development needed for determining is (including thousand
The parameters such as jin top body diameter), in combination with conventional engineering experience and test data, simulate field working conditions in workshop and set
Laboratory is put, by body (or external cylinders) height of constantly adjustment hydraulic jack, by collecting test data simultaneously carefully
After analysis, seek to meet the theoretical checking computations of live actual condition demand, satisfaction and the hydraulic jack body height of l-G simulation test is little
In the optimum result of the test of 4cm, so that it is determined that the geometric techniques index such as hydraulic jack diameter and body height size.
The three-level double acting self-bonding hydraulic jack less than traditional slim jack volume and height of cylinder is (highly little
In 4cm), can be laid in the working space of narrow space, meet various complicated little space jackings and operate operating mode, while can shut out
Absolutely and avoid secondary using cutting bent cap protective layer concrete and installing the bridge structure that bracket jacking operation causes " destruction " phenomenon, and
The jacking stroke that more traditional slim jack is realized on the ultra-thin jack is substantially improved (more than 2cm), more slim by thousand than tradition
Jin top jacking operation and bearing replacement highlight its operation ease and work efficiency advantage.
The present embodiment carries out essential improvement by the internal structure to existing conventional slim jack and outside operation principle,
So as to realize that being applied to jacking narrow space, jacking required precision height, synchronism has high demands and synchronization of jacking up and receipts cylinder one
The complex working condition that change has high demands, and optimization solves traditional slim jack bridge jacking in the case of bridge floor not close traffic
During complex operation and synchronization of jacking up and fall failure frequency problem occurred frequently after rise, realize that ultra-thin jack high-altitude application is simple,
It is accurately positioned and jack jacking cylinder automatic attaching bridge beam body bottom and meets the same of each adjacent beam body and overall beam body
Step jacking and the construction demand of falling operation, have captured aforementioned many technological difficulties and problem.
What the social benefit that the present embodiment is produced mainly can fall after rise in the synchronization of jacking up of actual science of bridge building and synchronously
In construction operation, the superior of three-level double acting self-bonding hydraulic jack itself is coordinated by the easy positioning and rectifying operation of workman
Service behaviour, stress performance and physical property, realization is quick, concentrate, civilise construction, is one line operating personnel of project scene
Smoothly operation provides advantage and guarantee, while operating personnel's operating efficiency is improved, directly reduces related synchronization top
Rise and fall after rise time for being consumed of operation, be to create short, flat, fast construction period and race against time (for example, some overhauls or to rob
It is nervous to repair the duration of a project, and efficiency of construction and schedule requirement are high) certain condition is provided, and alleviate indirectly and avoid tradition and apply
The work cycle it is longer to social economy increase and people's daily life negative effect, be conducive to improving People's livelihood.
The three-level double acting self-bonding hydraulic jack that the present embodiment is provided not only thoroughly improves and has prevented traditional jacking
With fall the common sex chromosome mosaicisms such as oil leak in construction, steel-fastening, de- cylinder after rise, and while synchronization of jacking up is substantially improved and fall after rise operation into
Power and work efficiency, so as to the time of embodying is short, work efficiency is high, do over again less, the measured construction advantage of matter, directly reduce and optimize project
The input amount and time loss of live artificial and mechanical one-shift, and project each side in the operation work progress is greatly reduced
The cost input of (people, machine, material, method, ring) is construction enterprises' reduced cost, creation profit and is gained time there is provided good visitor
Sight condition and opportunity.
By the research and development of three-level double acting self-bonding hydraulic jack that provide the present embodiment and application, advantageously allow
Industry Nei Ge enterprise understands bridge synchronous jacking instantly and falls the latest tendency and progress of the construction equipment and equipment constructed after rise, right
Deeper secondary research and development and optimization can be carried out by grasping the core technology of invention in research and development unit, so as to slap
The core technology of this aspect is held, and industrial competition is created for R ＆ D Enterprises itself and necessary objective condition is provided.By scientific research
Achievements conversion is actual product and is applied to the one line construction of project scene and will become core technology and be converted into must passing through for productivity
Journey, for the prominent creative and works fine performance of patent of the present invention, can for research and development and using enterprise capture industry market,
Win project and public's praise and image offer advantage are provided.
As shown in fig. 6, the present embodiment additionally provides a kind of oil mass automatically controls distribution hydraulic power unit system 44, including linkage
Control system 40, coordinated control system 40 by integrated data line 38 be connected with multiple one-to-one PLC hydraulic power units 39 and
PLC is adjustable oil path distributor 34；The output end of high-pressure oil pipe 33 of PLC hydraulic power units 39 is connected to the adjustable oil path distributors 34 of PLC
Oil circuit input, the data that the FPDP of PLC hydraulic power units 39 passes through integrated data line 38 and the adjustable oil path distributors of PLC
Port connects；PLC is adjustable, and oil path distributor 34 is connected with respectively the number of at least one hydraulic jack by single data wire 32
The digital flowmeter data wire 22 that word flowmeter is carried, and the oil-in of hydraulic jack is connected to by high-pressure oil pipe 33.It is excellent
Choosing, the hydraulic jack in the present embodiment is the three-level double acting self-bonding hydraulic jack 7 in above-described embodiment.
The digital flow that single data wire 32 is carried with digital flowmeter 8 in three-level double acting self-bonding hydraulic jack 7
Counting line 22 carries out docking connection, and the other end is connected on the FPDP of the adjustable oil path distributors 34 of PLC, by each three-level
Dynamic oil mass information and data inside the input jack of the metering of digital flowmeter 8 in double acting self-bonding hydraulic jack 7
The adjustable oil path distributors 34 of PLC are fed back to, the adjustable oil circuit distribution of PLC is automatically adjusted by PLC information analyses and processing function
The opening and closing of the sluice gate of each fuel feeding circuit in device 34, so as to each three-level double acting self-bonding hydraulic jack of improving supply
The oil mass on 7 oil circuits is pushed up, preliminary fuel delivery Optimization Work is completed, while by the adjustable oil path distributors 34 of PLC to each three-level
The Analysis on Results of the preliminary fuel delivery Optimization Work that the oil mass on the oil circuit of double acting self-bonding hydraulic jack 7 is carried out, will be dynamic
State analyze data and the conclusion information very first time feed back to PLC hydraulic power units 39 and coordinated control system by integrated data line 38
On 40, by PLC hydraulic power units 39 and coordinated control system 40 each three-level double acting self-bonding hydraulic pressure thousand respectively to feeding back
On the analysis foundations of multidate information such as dynamic fuel delivery, each oil circuit oil mass distribution condition, the oil circuit opening and closing situation on jin top 7,
The motor rotations of hydraulic pump are recorded by the PLC functions of carrying on PLC hydraulic power units 39, output phase is calculated according to revolution automatically
The The hydraulic oil of volume is answered, and the analysis result real-time adjustment liquid of prior feedback information is combined according to The hydraulic oil result of calculation
Press pump motor rotations and power and the oil mass and delivery rate of the adjustable oil path distributors 34 of each PLC are supplied, and by linkage
The collaborative work of the coordinated signals of control system 40 and the multiple PLC hydraulic power units 39 of coordination, while the adjustable oil path distributors 34 of PLC can
Take (or adjustment) after being processed according to the dynamic oil mass information analysis of 40 pairs of feedbacks of PLC hydraulic power units 39 and coordinated control system
New fuel delivery carries out PLC secondary analysis, is determined according to analysis result and lead in the adjustable oil path distributors 34 of PLC each three-level pair
The distribution condition of oil circuit valve opening and closing and concrete oil mass in effect self-bonding hydraulic jack 7, so as to ensure each three-level double cropping
With the supply oil mass entered inside each three-level double acting self-bonding hydraulic jack 7 between self-bonding hydraulic jack 7 and
There is oil mass sum to be consistent forever, reach from oil mass and automatically control distribution hydraulic power unit system entirety to each three-level double acting
The total oil mass of the local oil circuit fuel delivery of self-bonding hydraulic jack 7 and the inside of three-level double acting self-bonding hydraulic jack 7 from
The overall dynamic oil mass message loop to local is processed and systematization fuel delivery balance, once each three-level double acting self-bonding liquid
After the total oil mass in the inside of pressure jack 7 keeps balancing each other, the three-level piston of each three-level double acting self-bonding hydraulic jack 7
The jacking displacement of cylinder body also will be consistent, so as to accurately guarantee each three-level double acting self-bonding hydraulic jack during jacking
Push up the synchronism of 7 jacking strokes and beam body displacement.
Coordinated control system 40 is common by hand-held signal projector (remote control) and built-in signal receiver (chip)
Composition, hand-held signal projector (remote control) is provided with three buttons, is respectively precompressed key, jacking key and falls key after rise, can be remote
The control signal of journey wireless transmission precompressed, jacking and falling operation, and built-in signal receiver (chip) is installed on PLC hydraulic pressure
On the related control device CPUS7-224 mainboards of the control system of oil pump (equivalent to computer main board), and in PLC hydraulic oil pump controls
New wireless remote control control function is formed in system processed.Original setting and the oil pump for creating in PLC Pump Control Systems
Defeated (time) oily work functions can show on outside touch-screen and operate, and four defeated (times) that a PLC hydraulic oil pump is included
Hydraulic fluid port sets in the controls switching function.If while wanting different defeated on the multiple PLC hydraulic power units of coordinated signals
The switch of (returning) hydraulic fluid port and defeated (time) oil work, can be on outside touch-screen in advance to controlling on each PLC hydraulic power unit
Defeated (time) hydraulic fluid port that system and needs are controlled sets its working condition as ON or OFF (can click directly on touch-screen setting),
Then according to practice of construction stage and needs, directly by clicking on buttons different on hand-held signal projector (remote control)
(precompressed, jacking or falling), the related control device CPUS7-224 mainboards of the synchronous control system to each PLC hydraulic oil pump
Upper mounted built-in signal receiver (chip) sends command signal and via built-in signal receiver (chip) and control
Device CPUS7-224 double analysis processed are processed, and are then finally assigned work order by control device CPUS7-224 and are allowed previously positioned
The benefit instruction that defeated (time) hydraulic fluid port is synchronously sent according to hand-held signal projector (remote control) under ON (unlatching) state is adopted
Relevant work or operation (oil transportation precompressed, oil transportation jacking or oil pumping fall after rise) are taken, and previously positioned benefit is under OFF (closing) state
Defeated (time) hydraulic fluid port will not participate in work, so as to further control the top of the ultra-thin jack corresponding to each defeated (go back to) hydraulic fluid port
Rise, precompressed and falling are constructed.
By portable electric generator (or power supply) in whole oil mass automatically controls the operation process of distribution hydraulic power unit system 44
41st, transmission line of electricity 42 is responsible for being supplied to the adjustable oil path distributor 34 of PLC hydraulic power units 39, coordinated control system 40 and PLC always
Electric power, it is ensured that the normal operation of equipment and the electricity needs of data transfer, and digital flowmeter 8 carries battery supply, also to solution
Certainly the electric power of its own operates the electricity needs with the digital data transfer of flow meter data line 22.Each three-level double acting simultaneously is certainly
Laminating hydraulic jack 7, PLC is adjustable, and oil path distributor 34 and PLC hydraulic power units 39 oil mass between any two is supplied and oil mass
Reclaim and fuel feeding circuit is mainly realized by high-pressure oil pipe 33.
By that analogy, for each three-level double acting self-bonding hydraulic jack 7 oil return by cylinder recirculating oil quantity balance and
Synchronous falling after rise keeps falling the consistent principle of displacement top synchronous with above-mentioned three-level double acting self-bonding hydraulic jack 7 after rise and between beam body
Rise and beam body displacement synchronous principle is consistent, repeat no more.
PLC hydraulic power units possess the double acting service behaviour of hydraulic oil supply and pumpback, mainly by PLC system and machinery fortune
Transfer from one department to another two parts composition of uniting, PLC system is not shown in figure, and as shown in figure 19, machine operation system is mainly by hand stop valve
45th, low pressure fuel pump 46, leakage-free solenoid valve 47, jacking plunger 48, fall after rise plunger 49, eccentric wheel 50, counter wheel 51, motor 52,
Counterbalance valve 53, fuel tank 54 are collectively constituted.
As an embodiment, as shown in fig. 6, above-mentioned three-level double acting self-bonding hydraulic jack 7 is one per 5
Group, distribution hydraulic power unit system 44 is automatically controlled with an oil mass per two groups being connected carries out fuel feeding and oil return is controlled.
Self-bonding uniform stressed bridge synchronous jacking and bridge jacking and the falling of falling system using patent of the present invention
Method specifically includes following steps：
A. multiple stage three-level double acting self-bonding is installed between the bridge beam body 35 and support (or basis) 36 for treating jacking
Hydraulic jack 7, and carry out position using manual centering rectification device 2 subsidiary in three-level double acting self-bonding hydraulic jack 7
Centering and correction process (mainly allow first order cylinder body protuberance 3 the adjacent two panels beam body of the monolateral alignment of cross hairs gap or hinge
Seam position), as shown in Figure 6, it is ensured that interposition of the three-level double acting self-bonding hydraulic jack 7 in jacking two panels beam body is treated
Put.
B. it is high-pressure oil pipe 33 is adjustable with the oil cylinder oil inlet mouth 9, PLC of three-level double acting self-bonding hydraulic jack 7 respectively
The interface of oil path distributor 34 and PLC hydraulic power units 39 is attached, it is ensured that from the adjustable oil circuits point of the Jing PLC of PLC hydraulic power units 39
The fuel feeding of orchestration 34 to each three-level double acting self-bonding hydraulic jack 7 is to connect and unobstructed with oil return circuit.
One end of single data wire 32 is counted with the digital flow of three-level double acting self-bonding hydraulic jack 7 simultaneously
Line 22 is attached, and the other end and the FPDP of the adjustable oil path distributors 34 of PLC of single data wire 32 are attached；And will
The two ends of integrated data line 38 FPDP respectively with the adjustable oil path distributors 34 of PLC, the FPDP of PLC hydraulic power units 39 and
The FPDP of coordinated control system 40 is connected to each other two-by-two, it is ensured that from each three-level double acting self-bonding hydraulic jack
7 Jing PLC are adjustable oil path distributor 34 reaches PLC hydraulic power units 39 and all data transmission links of coordinated control system 40 are protected
Hold and connect and unobstructed.
Then, by the two ends of transmission line of electricity 42 respectively with portable electric generator (or power supply) 41 and the adjustable oil path distributors of PLC
34th, PLC hydraulic power units 39 and coordinated control system 40 carry out effectively connection, it is ensured that the traffic clearance of each power operation equipment and
Connection so that portable electric generator (or power supply) 41 produce electric power can smoothly convey to the adjustable oil path distributors 34 of PLC,
PLC hydraulic power units 39 and coordinated control system 40 carry out powered operation.As shown in fig. 6, multiple stage PLC PLC hydraulic power units 39
Between by arrange coordinated control system 40 carry out linkage Synchronization Control (synchronization of jacking up and falling).
C. start portable electric generator (or power supply) 41 gives PLC adjustable oil circuit distribution power transmission by transmission line of electricity 42
Device 34, PLC hydraulic power units 39 and coordinated control system 40 so that oil mass automatically controls distribution hydraulic power unit system 44 and carries out normally
Operating, it is accurate in the oil mass for guaranteeing the hydraulic oil that PLC hydraulic power units 39 are exported that oil mass automatically controls distribution hydraulic power unit system 44
Metering, PLC adjust oil path distributor 34 the accurate distribution of oil mass to be carried out to the The hydraulic oil that PLC hydraulic power units 39 are exported and to each
On the premise of the total oil mass in the inside of three-level double acting self-bonding hydraulic jack 7 carries out equivalent precise control, three-level double acting is driven
The inner carrier of the three-level piston/cylinder 6,5,1 of self-bonding hydraulic jack 7 is classified jacking, first order piston/cylinder 6 with outer piston
Mainly it is responsible for carrying out the first order synchronously examination jacking, to eliminate three-level double acting self-bonding hydraulic jack 7 and adjacent beam body bottom
The space in face and beam body elastic deformation itself, with season first order piston/cylinder 6 with bridge top in the case of not close traffic
With reference to there is gradient between adjacent beam body 35 and the discrepancy in elevation carries out appropriate translation and sky in the uneven load that transmits and horizontal force
Between tilt adjustments, make the surface of first order piston/cylinder parallel as far as possible and be close to the bottom surface of adjacent beam body, and guarantee it is previously right
In the monolateral gap for being still directed at adjacent two panels beam body of cross hairs of first order cylinder body protuberance 3 that finishes or hinge seam position, if depositing
Still can be carried out by manual centering rectification device 2 subsidiary in three-level double acting self-bonding hydraulic jack 7 in little deviation secondary
Position centering and correction are processed (such as Fig. 4 and Fig. 7).
By being improved design to traditional slim jack, professional flow prison is combined by double level PLC control system
Survey device, it is ensured that the uniformity of the oil mass for entering each ultra-thin jack is got Jing after oil path distributor distribution from oil pump, directly
The volume for ensureing hydraulic oil in ultra-thin jack cylinder increases uniform synchronization, and jacking travel displacement is synchronously equal, and adopts position
Move monitoring device to synchronize monitoring and verify, if double level PLC control system is automatic to the fuel feeding and oil mass of ultra-thin jack
Distribution is uneven, still can reach dynamic with reference to displacement monitoring feedback data adjustment fuel feeding and oil mass distribution using parameter is manually entered
Balance, by two methodses the displacement precise control during ultra-thin jack jacking is ensured.
D. finish in 6 two centerings of first order piston/cylinder and positional deviation correction, and the surface of first order piston/cylinder 6 is parallel simultaneously
After being close to the bottom surface of adjacent beam body, continue to drive oil mass to automatically control distribution hydraulic power unit system 44 in holding PLC hydraulic pumps
Stand the The hydraulic oil that the oil mass accurate measurement of hydraulic oil of 39 outputs, PLC adjust oil path distributor 34 to export PLC hydraulic power units 39
Carry out the accurate distribution of oil mass and equivalent carried out to each total oil mass in inside of three-level double acting self-bonding hydraulic jack 7 accurately to control
On the premise of system, continue, to each oil inside offering of three-level double acting self-bonding hydraulic jack 7, second level piston/cylinder to be made respectively
5 and third level piston/cylinder 1 continue individually ejection, and carry out the second level and third level synchronization of jacking up operation respectively, and allow second
Level piston/cylinder 5 or the surface of third level piston/cylinder 1 can be parallel and closely connected in adjacent beam body bottom surface, guaranteeing three-level double acting
It is automatic according to three-level double acting self-bonding 7 internal oil pressures of hydraulic jack in the case of the position centering of self-bonding hydraulic jack 7
Balance, the distribution of oil mass autobalance and water conservancy diversion service behaviour are uneven with what adjacent beam body top surface was handed down to meet and provide
The top power that load balances each other so that top lift can be uniformly born between each beam body (or adjacent beam body), while on this basis
Continue to automatically control distribution hydraulic power unit system 44 to each uniform equivalent of three-level double acting self-bonding hydraulic jack 7 from oil mass
Fuel feeding, it is simultaneously real according to the flow volume and quality of the operating revolution automatic gauge hydraulic oil output of the motor of PLC hydraulic power units 39
When be reflected on PLC display screens, the institute of digital flowmeter 8 carried in combination with three-level double acting self-bonding hydraulic jack 7 is anti-
The hydraulic oil dynamic data inside the entrance three-level double acting self-bonding hydraulic jack 7 of feedback carries out comprehensive analysis, draws every
The inside of individual three-level double acting self-bonding hydraulic jack 7 oil inlet quantity per second is equal, internal oil mass total amount is equal and enters speed oil phase
Deng " third " conclusion, so as to confirm the top of the three-level piston/cylinder 6,5,1 of each three-level double acting self-bonding hydraulic jack 7
The jacking displacement for rising (or between adjacent beam body) between stroke and each beam body is synchronous equal, as shown in Fig. 8, Fig. 9 and Figure 10, to beam
Gap (or hinge crack structure) is in itself zero damage and strong protection between body structure and beam body.
E. in three-level double acting self-bonding hydraulic jack 7 using three-level piston/cylinder 6,5,1 (or phase between each beam body
Between adjacent beam body) jacking in place after construction operation, can automatically control distribution hydraulic power unit system 44 by oil mass is guaranteeing PLC
The liquid that oil path distributor 34 is exported to PLC hydraulic power units 39 is adjusted in the oil mass accurate measurement of the hydraulic oil of the output of hydraulic power unit 39, PLC
Force feed amount carries out oil mass and accurately distributes and carry out equivalent to each total oil mass in inside of three-level double acting self-bonding hydraulic jack 7
On the premise of precise control, analogized according to the operation of synchronization of jacking up and principle, all three-level piston/cylinders 6,5,1 are classified successively
Carry out the reverse first order, the second level and the third level and synchronously receive cylinder falling, so as to realize pushing up power uniform balance and the beam that synchronously falls, and
Receive in the beam that falls using the self-bonding service behaviour of the three-level piston/cylinder 6,5,1 of three-level double acting self-bonding hydraulic jack 7
Recover the original position of each beam body (or adjacent beam body) and state during cylinder, as shown in Fig. 8, Fig. 9 and Figure 10, to girder construction and
Gap (or hinge crack structure) is in itself zero damage and strong protection between beam body.
In sum, because embodiment employs three-level double acting self-bonding hydraulic jack 7, one-level can be carried out and is pushed up in advance
Rise, while space and elastic deformation is eliminated, can adjust jack piston cylinder surface and beam body base plane position phase one
Cause so that during succeeding level-two and the formal jacking of three-level, second level piston/cylinder 5 and third level piston/cylinder 1 can be abundant
Laminating beam body bottom surface, and can the people of centering rectification device 2 be manually the overall center position of adjustment jack (with adjacent two plate-girder
Between hinge seam alignment) so that second level piston/cylinder 5 and third level piston/cylinder 1 can more preferably be sent out during jack up girder
Its oil pressure autobalance, oil mass autobalance assignment performance are waved, and realizes the effect of beam body bottom surface uniform stressed.Together
When, by oil mass automatically control distribution hydraulic power unit system 44 The hydraulic oil accurate measurement, The hydraulic oil are accurately distributed and
The precise control of the total oil mass in the inside of three-level double acting self-bonding hydraulic jack 7, realizes multiple three-level double acting self-bonding hydraulic pressure
The identical oil mass in the inside of jack 7 and the jacking stroke of jack three-level piston/cylinder 6,5,1 and the uniformity of beam body displacement, so as to
Reach bridge beam body Multi-point synchronization jacking and fall controllable after rise, and avoid and prevented piston in prior art being easily separated from cylinder
Body, piston are by cylinder body is stuck, piston oil leak, jacking stroke differ and cannot 18 defects such as precise control, top lift be uneven,
So that it is guaranteed that structure safety, construction quality in bridge jacking work progress are good, work efficiency is lifted and cost is reduced.
By contacting to each other traditional slim jack, PLC control system, single-acting oil transfer pump and working mechanism is carried out
Improvement optimization design, is three-level double acting self-bonding hydraulic jack by traditional slim single-acting jack improvement, and in PLC
(PLC is adjustable, and oil circuit divides for upgrading research and development PLC general control systems (PLC hydraulic power units 39) and sub-control system on the basis of control system
Orchestration 34) Coupled motion system, I carries out transformation and upgrade to defeated (time) the oil pump mechanical realization of tradition, in traditional single plunger
On the basis of the supporting oil pump parts such as (i.e. jacking plunger), eccentric wheel and motor, increased falling plunger and its Special Eccentric wheel and
The oil return pump component of the pumpbacks such as motor oil, realizes that defeated (time) oil pump double acting integrated design and application, (such as Figure 19), finally reach
To ultra-thin jack can jacking can fall the double acting performance of receiving cylinder after rise, prevented and captured tradition oil transfer pump (single-acting oil pump)
Cannot realize that jack receives the disadvantage of cylinder automatically.By by PLC general control systems and defeated (time) oil pump two independent individuals originally
Unit carries out intensive merging, has both reduced number of devices and heavy burden, and lifting operation and the convenience of maintenance so that both link
Operating efficiency and quality more preferably, while improving traditional oil path distributor, PLC sub-control systems are carried out with oil path distributor
Intensive synthesis, according to the data of ultra-thin jack flow meter feedback so that oil path distributor can be carried out with defeated (time) oil pump
Output and the oil mass for reclaiming and the automation oil circuit lock for passing through oil path distributor in the multigroup jack oil circuit of linkage Synchronization Control
The switch of door carrys out defeated (time) oil mass of the secondary micro-adjustment per group on (individual) jack oil circuit, so as to reach and realize jack synchronization
Defeated (time) fuel-flow control of synchronous equal amount of each ultra-thin jack during jacking and synchronous falling, and then control and ensure very heavy
Top jacking and the synchronism of falling displacement, prevent and have captured traditional slim jack jack-up system and hydraulic jack is synchronously pushed up
Rise and fall after rise and control poor or even unmanageable " bottleneck ".
The preferred embodiment of the present invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (6)
1. a kind of three-level double acting self-bonding hydraulic jack, it is characterised in that include：The coaxial outside for connecting together successively
Oil cylinder, first order piston/cylinder, second level piston/cylinder and third level piston/cylinder；Also include multiple cylinder bodies in the jack
Rake, the cylinder body rake be uniformly arranged on the outer wall of the first order piston/cylinder and the outside oil cylinder inwall it
Between, and position is corresponding is arranged between the lower wall of the upper wall of the first order piston/cylinder and the outside oil cylinder；Institute
State spring of the cylinder body rake including socket in hollow cylinder, the hollow cylinder, the solid cylinder of the spring other end connection
Body, external diameter and the internal diameter of the hollow cylinder of the solid cylinder match；The top of the first order piston/cylinder is arranged
The corner for having cross protuberance, the cross protuberance is provided with manual centering rectification device, the manual centering rectification device
Including the spring being fixedly connected with the first order piston/cylinder, the hook being connected with the spring.
2. a kind of three-level double acting self-bonding hydraulic jack as claimed in claim 1, it is characterised in that the three-level double cropping
Include the first oil-leakage-prevention barrier with self-bonding hydraulic jack, the first oil-leakage-prevention barrier includes that outside oil cylinder inner roof wall is attached
Oil removal material, the free end of the oil removal material is provided with compressed part, the compressed part and the first order piston/cylinder pressure
Tightly, the compressed part includes high-strength spring and stainless steel ball, and the first oil-leakage-prevention barrier also includes high polymer elastic
Rubber slab, one end of the high polymer elastic rubber slab is fixedly connected with the stainless steel ball, and the other end is connected with compression dress
Put, one end of the hold down gag is connected with the first order piston/cylinder, the other end is connected with the oil removal material；Described three
Level double acting self-bonding hydraulic jack also includes the second oil-leakage-prevention barrier, and the second oil-leakage-prevention barrier is included in outside oil cylinder
The segmentation bulk bottom of setting offers oil circulation hole, and the outside oil cylinder inner side base is set to radiused configuration.
3. a kind of three-level double acting self-bonding hydraulic jack as claimed in claim 1, it is characterised in that the cylinder body is set
The number of rake is 5.
4. a kind of three-level double acting self-bonding hydraulic jack as claimed in claim 1, it is characterised in that live the second level
Plug cylinder body and third level piston/cylinder are made up of respectively four sub- cylinder bodies.
5. a kind of three-level double acting self-bonding hydraulic jack as claimed in claim 1, it is characterised in that the first order is lived
Plug cylinder interior is provided with the asphalt channel for being communicated to the second level piston/cylinder, and on the asphalt channel Bidirectional pressure is provided with
Power valve.
6. a kind of three-level double acting self-bonding hydraulic jack as claimed in claim 5, it is characterised in that the bidirection press
Valve opening and closing threshold value is 0.5MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141784.4A CN104692281B (en) | 2015-03-30 | 2015-03-30 | Three-stage double-acting self-fitting hydraulic jack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510141784.4A CN104692281B (en) | 2015-03-30 | 2015-03-30 | Three-stage double-acting self-fitting hydraulic jack |
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| Publication Number | Publication Date |
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| CN104692281A CN104692281A (en) | 2015-06-10 |
| CN104692281B true CN104692281B (en) | 2017-04-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104876152B (en) * | 2015-03-30 | 2017-06-13 | 上海市城市建设设计研究总院（集团）有限公司 | The hydraulic jack of three-level double acting self-bonding |
| CN104692280B (en) * | 2015-03-30 | 2016-11-16 | 上海市城市建设设计研究总院 | Three grades of double acting self-bonding hydraulic jack |
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| CN201201884Y (en) * | 2008-03-10 | 2009-03-04 | 王军 | Long stroke multi-joint type screwed pipe ejector |
| CN201530703U (en) * | 2009-10-01 | 2010-07-21 | 王德赟 | Vertical triple-travel hydraulic jack |
| CN201971589U (en) * | 2011-01-19 | 2011-09-14 | 陈华兵 | Triplex electro-hydraulic jack |
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