CN106395674B - Intelligent preceding clip type jack - Google Patents
Intelligent preceding clip type jack Download PDFInfo
- Publication number
- CN106395674B CN106395674B CN201611054270.6A CN201611054270A CN106395674B CN 106395674 B CN106395674 B CN 106395674B CN 201611054270 A CN201611054270 A CN 201611054270A CN 106395674 B CN106395674 B CN 106395674B
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- CN
- China
- Prior art keywords
- tool
- jack
- anchor slab
- plate
- clamping piece
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
- E01D2101/32—Metal prestressed
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of intelligent preceding clip type jacks, including the first clamping device, jack main body and the second clamping device, first clamping device, the second clamping device respectively include tool anchor slab, tool clamping piece, spring base, bearing cylinder, tool anchor slab adjusting screw rod, end plate, limit plate；The jack main body includes oil cylinder, piston, left oil nozzle and right oil nozzle, can be directly connected to Intelligent tensioning pump station, realizes that tensioning automatically controls；The tool anchor slab, tool clamping piece and the spring base are located in the piston cavity, and limit plate is equipped with outside the end plate；The mandril penetrates in the tool anchor slab through-hole, opposite with the tool clamping piece small end face；It uses and is threadedly coupled between the tool anchor slab and the piston.Jack of the present invention is small in size, and the bearing cylinder at the left and right end of jack can make extending use, saves steel strand wires, moves back anchor automatically, automatically controls, and steel strand is quick and convenient, and intermediate plate is good to neutrality, and tool anchor slab can Arbitrary Rotation.
Description
Technical field
The invention belongs to prestressed stretch-draw technical field of jacks more particularly to intelligent preceding clip type jacks.
Background technique
Currently, prestressed stretch-draw is the most critical process for determining bridge overall durability.China's traditional intelligence tensioning pump station
It is made of centre-hole jack and intelligent control pumping plant, steel strand wires pass through jack from punching set when tensioning, this series is very heavy
Top need both ends steel strand wires leakage length be at least jack contour length 1.5 times (i.e. 1.2~1.6m), be increased by this way
The usage amount of steel strand wires, increases Project Cost, virtually wastes material, and increase weight economic load.It is some at present to be disclosed
" Multihole front clamping jack " and " preceding clip type jack " patent in, the jack use of these Patent designs contains punching
Thus set increases the outer dimension of jack, will more take time and effort in opposite crawl space stretching construction, work efficiency is low；
Meanwhile it is unbalanced to move back the restraining force that anchor rear jaw is subject to, intermediate plate is formed loosely, to neutral poor, is not easy to the construction of two times tensioning
Implement.
Summary of the invention
To solve the above problem present in the prior art and actual conditions, the present invention provides a kind of intelligent preceding cassettes
Jack, including the first clamping device, jack main body and the second clamping device, first clamping device, second clamp dress
The left and right both ends for being located at jack main body are set, first clamping device, the second clamping device respectively include moveable anchor
Plate, tool clamping piece, spring base, bearing cylinder, tool anchor slab adjusting screw rod, end plate, limit plate；The jack main body includes oil
Cylinder, piston, left oil nozzle and right oil nozzle；The tool anchor slab, tool clamping piece and the spring base are located in the piston cavity, according to
Secondary to be connected, the spring base is equipped with spring, is equipped with intermediate plate in spring base large end face and controls card slot, sets in tool clamping piece large end face
There is small boss, in the card slot for making tool clamping piece be stuck in spring base always under the elastic force effect of spring, the bearing cylinder is located at institute
The outside for stating tool anchor slab connects with moveable anchor plate face, has been connected tool anchor slab adjusting screw rod with the tool anchor slab,
Limit plate is equipped with outside the end plate；The mandril penetrates in the tool anchor slab through-hole, with the tool clamping piece small end face phase
It is right.
Preferably, the tool anchor slab outer end face is equipped with external screw thread, and the jack piston inner wall is equipped with internal screw thread, institute
It states to use between tool anchor slab and the piston and be threadedly coupled.
Preferably, the jack is additionally provided with gearshift, and institute's displacement apparatus includes displacement sensor flanged plate, guiding
Bar, set square and displacement ruler, guide rod and displacement ruler are bolted to connection with set square, and one of set square places in place
In displacement sensor flange board slot, displacement sensor flanged plate is fixed on tool anchor slab.
The present invention has the following advantages:
1, jack is small in size
Compared to equally specified nominal oil pressure, the jack of rated operating pressure, preceding clip type jack is small in size.Main body
It is not set now with punching set, reduces the shape of jack, jack is enable to work in smaller narrower space.
2, the left and right bearing cylinder of jack can make extending use
In the prestressed girders stretching process such as beam making field or some Cast-in-situ Beams, due to the limitation of design, tensioning space it is narrow
Small, jack cannot be placed directly on to be contacted with the anchor slab that works.The preceding cassette thousand of punching series jack and some other types
It needs to add extending between jack front end and limit plate when jin withstands on tensioning, so that worker's construction and installation jack
When it is relatively difficult, cannot quickly make extending contraposition, centering, and the intelligent preceding clip type jack of the design is made in such beam
When tension operation, then do not need to add extending again.Can smoothly operation, this saves labour degree to reduce work
Amount improves working efficiency.
3, steel strand wires are saved
This jack tool anchor slab is built in the piston of jack, so as to shorten between tool anchor slab and work anchor slab
Distance, effectively shorten the clamping segment length of steel strand wires, reduce the usage amount of steel strand wires, i.e., by reserved originally 1.2m~
1.6m is reduced to current 0.2m~0.3m, as a result, a branch of steel strand wires usage amount that can at most save 2.8 meters, a duct
It is calculated by 5 beams, then can save 14 meters of steel strand wires, effectively save economic cost in this way.
4, anchor is moved back automatically
The first clamping device of this jack, the second clamping device, which all have, moves back anchor function automatically, is needing repeatedly to be opened
When drawing, when jack backhaul, does not need manually to remove strutting tool intermediate plate, and the spring base built in jack and spring thereon are automatic
Control tool clamping piece position.After jack backhaul in place, appropriate adjustment jack position is only needed, can be opened next time
Draw work.
5, it automatically controls
Jack safety of the present invention is mainly reflected in, and jack is equipped with tension control system and carries out tensioning work, is being opened
After the completion of drawing, first: not manually clamping tool intermediate plate；Second: moving back anchor without artificial, move back intermediate plate；Third: pass through intelligence
Drawing the control of pumping plant to be not concerned about jack has the appearance of overtravel tensioning situation；4th: Intelligent tensioning pump station automatic control jack
Backhaul stop, i.e. jack halt in tensioning backhaul；5th: when needing two times tensioning, after jack backhaul in place, only needing
Appropriate adjustment jack position is wanted, next tensioning can be carried out, do not need to manually adjust tool clamping piece.6th: entire tensioning
Process, Intelligent tensioning pump station automatically control, clamping device automatic control and adjustment.
6, steel strand is quick and convenient, and intermediate plate is to neutral good
Mandril of this series jack when jack is in initial conditions, in the first clamping device or the second clamping device
Tool clamping piece is opened, tool clamping piece is made to be in opening situation, so that convenient and quick time saving and energy saving when shuttle steel strand wires.Meanwhile bullet
Spring abutment and its spring effectively control the position of tool clamping piece, and tool clamping piece is made to have been at opening and Shaft alignment state.
7, tool anchor slab can Arbitrary Rotation
It is link important in stretching construction, the preceding clip type jack of the invention that can tool anchor slab rotate at any angle
The connection of tool anchor slab and jack piston fix jack piston using being threadedly coupled, while reserved certain rotation sky
Between give tool anchor slab energy moving rotary, i.e., manually rotation adjusting screw rod appropriate, tool anchor slab then can automatic position adjusting function, make work
Tool anchor slab is aligned with the work anchor plate hole position that installation fixes.To improve work efficiency.
Detailed description of the invention
Fig. 1 is the intelligent preceding clip type jack structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the tensioning operation schematic diagram of the intelligent preceding clip type jack of the embodiment of the present invention.
Fig. 3 is that the tensioning of the intelligent preceding clip type jack of the embodiment of the present invention starts the structural schematic diagram of state.
Fig. 4 is the structural schematic diagram of the gearshift of the intelligent preceding clip type jack of the embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is discussed in detail with reference to the accompanying drawing
As shown in Figure 1, a kind of intelligent preceding clip type jack, including the first clamping device, jack main body and the second folder
Tight device, first clamping device, the second clamping device are located at the left and right both ends of jack main body, first folder
Tight device, the second clamping device respectively include tool anchor slab 3, tool clamping piece 4, spring base 5, bearing cylinder 2, tool anchor slab and adjust spiral shell
Bar 12, end plate 1, limit plate 16；The jack main body includes oil cylinder 9, piston 8, left oil nozzle 7 and right oil nozzle 11；The tool
Anchor slab 3, tool clamping piece 4 and the spring base 5 are located in 8 cavity of piston, are sequentially connected, and the spring base 5 is equipped with bullet
Spring controls card slot in 5 large end face Vehicle Processing intermediate plate of spring base, in 4 large end face Vehicle Processing small boss of tool clamping piece, in the bullet of spring
It is stuck in tool clamping piece 4 always in the card slot of spring base 5 under power effect, the bearing cylinder 2 is located at the outer of the tool anchor slab 3
Portion is connect with 3 plane-plane contact of tool anchor slab, is connected with the tool anchor slab 3 and is equipped with moveable anchor plate adjusting screw rod 12, the end plate
1 outside is equipped with limit plate 16；The mandril 14 penetrates in 3 through-hole of tool anchor slab, with the 4 small end face phase of tool clamping piece
It is right.
15 be steel strand wires in Fig. 1, and 17 be work anchor slab.
3 outer end face of tool anchor slab is equipped with external screw thread, and 8 inner wall of jack piston is equipped with internal screw thread, the work
It uses and is threadedly coupled between tool anchor slab 3 and the piston 8.
As shown in figure 4, the jack is additionally provided with gearshift, institute's displacement apparatus includes displacement sensor flanged plate
25, guide rod 21, set square 23 and displacement ruler 22, guide rod and displacement ruler 22 are fixedly connected with set square 23 by bolt 24,
One of set square 23 is placed in displacement sensor flange board slot, and displacement sensor flanged plate 25 is fixed on tool anchor slab 3,
22 other end of displacement ruler is located in displacement protecting box 26, during the work time, is displaced ruler 22 with the position of tool anchor slab 3
Change and generates different displacement datas.
As shown in Figure 2 and Figure 3, this jack and 30 synergic tensioning of Intelligent tensioning pump station, Intelligent tensioning pump station 30 pass through displacement
Numerical value, tensioning pressure value, the stretching process of automatic control jack, to complete key tensioning work.
The working principle of the intelligent preceding clip type jack of the present invention is as follows:
1, stretching process
After being ready work, steel strand wires successively enter the mandril of intelligent preceding clip type jack from limit plate, pass through
Then through spring base, spring base, mandril are equivalent to guide pipe effect in jack for tool anchor slab, tool clamping piece, twist steel
Line smoothly penetrates, and bearing cylinder is connect with work anchor plate face face contact, when the right oil nozzle oil inlet of jack, then the first clamping device progress
Tensioning work, and tool anchor slab, spring base, mandril, tool clamping piece constitute moving body, move with piston movement.It is arrived in tensioning
From compression to stretched condition conversion, intermediate plate clamps steel strand wires to spring on certain stroke rear spring seat simultaneously, and mandril is moved toward the right
Dynamic, gearshift measures the change in displacement process of jack, and relevant pressure value, shift value are uploaded intelligent tensioning pump
The control centre stood.
In Fig. 2, Fig. 3,20 be beam to be tensioned.
2, jack backhaul and the process of falling top
Jack tension is to prefabricated working pulling force and after reaching the dwell time, the left oil nozzle oil inlet of jack, and right oil nozzle returns
Oil.Tool anchor slab, spring base, tool clamping piece, mandril etc. are moved with the movement of piston, anchor-shaped state are moved back at system, gearshift
Measurement jack is displaced and controls the backhaul stop of jack；When jack backhaul to away from backhaul stop there are also when certain distance,
The end plate of first clamping device is contacted with the clamping plate of mandril and is no longer moved, and mandril starts to push tool clamping piece open at this time, until work
Tool intermediate plate smoothly open, when jack backhaul in place when, mandril opens tool clamping piece completely.Meanwhile spring base and bullet thereon
Spring effective control tool clamping piece moving distance again makes tool clamping piece not depart from tool anchor slab, and intermediate plate is loose and complete opening
And keep good to neutrality, thus it is convenient for penetrating steel strand wires next time.If being pushed up for needs and carrying out two times tensioning
When, then do not need artificial other operations relevant to jack progress, the adjustment follow-up jack appropriate after backhaul in place
It can carry out two times tensioning.
The intelligent preceding clip type jack of the design controls card slot in spring base large end face Vehicle Processing intermediate plate, meanwhile, in work
Have intermediate plate large end face Vehicle Processing small boss, in the card slot for making tool clamping piece be stuck in spring base always under the elastic force effect of spring,
Guaranteed to it is neutral, guarantee that tool clamping piece is without stuck disabled status in jack.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of intelligent preceding clip type jack, which is characterized in that clamped including the first clamping device, jack main body and second
Device, first clamping device, the second clamping device are located at the left and right both ends of jack main body, and described first clamps
Device, the second clamping device respectively include tool anchor slab, tool clamping piece, spring base, bearing cylinder, tool anchor slab adjusting screw rod, end
Plate, limit plate；The jack main body includes oil cylinder, piston, left oil nozzle and right oil nozzle；The tool anchor slab, tool clamping piece and
The spring base is located in the piston cavity, is sequentially connected, and the spring base is equipped with spring, is equipped in spring base large end face
Intermediate plate controls card slot, is equipped with small boss in tool clamping piece large end face, is stuck in tool clamping piece always under the elastic force effect of spring
In the card slot of spring base, the bearing cylinder is located at the outside of the tool anchor slab, connects with moveable anchor plate face, with the work
Have anchor slab to be connected equipped with moveable anchor plate adjusting screw rod, the end plate outside is equipped with limit plate；It is logical that mandril penetrates the tool anchor slab
It is opposite with the tool clamping piece small end face in hole；
The tool anchor slab outer end face is equipped with external screw thread, and the jack piston inner wall is equipped with internal screw thread, the tool anchor slab
It uses and is threadedly coupled between the piston；
The jack is additionally provided with gearshift, institute's displacement apparatus include displacement sensor flanged plate, guide rod, set square and
It is displaced ruler, guide rod and displacement ruler are bolted to connection with set square, and one of set square is placed on displacement sensor method
In blue board slot, displacement sensor flanged plate is fixed on tool anchor slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054270.6A CN106395674B (en) | 2016-11-25 | 2016-11-25 | Intelligent preceding clip type jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054270.6A CN106395674B (en) | 2016-11-25 | 2016-11-25 | Intelligent preceding clip type jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106395674A CN106395674A (en) | 2017-02-15 |
| CN106395674B true CN106395674B (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611054270.6A Active CN106395674B (en) | 2016-11-25 | 2016-11-25 | Intelligent preceding clip type jack |
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| CN (1) | CN106395674B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265332B (en) * | 2017-07-14 | 2023-05-26 | 陕西延长石油矿业有限责任公司 | Double-loop secondary tensioning jack and use method thereof |
| CN108190782A (en) * | 2018-03-01 | 2018-06-22 | 柳州煜乾机械装备股份公司 | For the interior card jack to the deeper girder tensioning of beam-ends tensioning duct notch |
| CN110877869A (en) * | 2018-09-05 | 2020-03-13 | 河北高达预应力科技有限公司 | Jack displacement sensor |
| CN109163180B (en) * | 2018-10-09 | 2024-01-02 | 株洲时代新材料科技股份有限公司 | Displacement sensor convenient to install in automatic tool anchor |
| CN114955919B (en) * | 2022-08-01 | 2022-10-21 | 博能传动(苏州)有限公司 | Safety nut elevator |
| CN116002553A (en) * | 2023-02-10 | 2023-04-25 | 北京市建筑工程研究院有限责任公司 | Intelligent synchronous hydraulic lifting system suitable for cable structure and use method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2333696Y (en) * | 1998-06-29 | 1999-08-18 | 中外合资柳州欧维姆建筑机械有限公司 | Single pre-fastening front-clamp jack |
| CN2504247Y (en) * | 2001-07-31 | 2002-08-07 | 柳州市建筑机械总厂 | Multihole front clamping jack |
| JP6083702B2 (en) * | 2013-02-04 | 2017-02-22 | 三井住友建設株式会社 | PC steel connection method and bridge widening method |
| CN203128108U (en) * | 2013-04-04 | 2013-08-14 | 哈尔滨理工大学 | Jack for mechanics experiments |
| CN206359177U (en) * | 2016-11-25 | 2017-07-28 | 柳州市邱姆预应力机械有限公司 | Intelligent preceding clip type jack |
-
2016
- 2016-11-25 CN CN201611054270.6A patent/CN106395674B/en active Active
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| Publication number | Publication date |
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| CN106395674A (en) | 2017-02-15 |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Xinjian Inventor after: Liu Jianying Inventor after: Tang Mao Inventor after: Wei Jianhong Inventor after: He Suhua Inventor after: Mei Zhiqian Inventor after: Xie Yanjun Inventor before: Wang Xinjian Inventor before: Liu Jianying Inventor before: Tang Mao Inventor before: Wei Jianhong Inventor before: He Suhua Inventor before: Mei Zhiqian Inventor before: Xie Yanjun |
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