CN208561544U - Two-way jack for prestressing force intelligent tensioning - Google Patents
Two-way jack for prestressing force intelligent tensioning Download PDFInfo
- Publication number
- CN208561544U CN208561544U CN201820709524.1U CN201820709524U CN208561544U CN 208561544 U CN208561544 U CN 208561544U CN 201820709524 U CN201820709524 U CN 201820709524U CN 208561544 U CN208561544 U CN 208561544U
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- CN
- China
- Prior art keywords
- pars contractilis
- reinforcing steel
- presstressed reinforcing
- cylinder body
- prestressing force
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Abstract
The utility model discloses a kind of two-way jack for prestressing force intelligent tensioning, including cylinder body, pars contractilis there are two being set on the cylinder body, the cylinder body, which runs through, is equipped with presstressed reinforcing steel via hole, the telescopic direction of two pars contractilis is parallel to each other, two pars contractilis stretch out the cylinder body along the both ends of the presstressed reinforcing steel via hole respectively, the presstressed reinforcing steel via hole is corresponded on two pars contractilis and is respectively equipped with presstressed reinforcing steel holding holes, and two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis.Using the utility model has the beneficial effects that, the two work departments difference tensioned prestressing bar and the reversed pressure plate of press of two-way jack, after pretensioning to predetermined pre-tensioning force value, press pars contractilis work, reversed pressure plate is actively pressed so that work anchor clamps presstressed reinforcing steel, than relying on presstressed reinforcing steel to spring back the mode passively clamped after existing unidirectional jack tension, prestressed loss can be reduced, stretch-draw effect is preferably controlled and improve.
Description
Technical field
The utility model relates to build and a kind of tool of field of bridge construction, and in particular to one kind is for prestressing force intelligence
The two-way jack of tensioning.
Background technique
Prestressing stretching technique is widely applied in building and bridge construction, can slow down concrete using pre-stress construction
The appearance and extension process of matrix cracking, prolong the service life.However, tensioning construction process is to material and construction technology
Requirement it is very high, be easier to the problem of loss of prestress occur.At the end of prestressing force loads, since the rebound of presstressed reinforcing steel can just make
It fastens between fixture and anchor ring, is lost so as to cause the prestressing force of load.It is damaged at present in work progress to solve prestressing force
The maximum stress of the problem of mistake, the load of the method for often requiring to use ultra stretching, i.e. tensioning are greater than design value.However ultra stretching side
Method does not often know stress loss amount, it cannot be guaranteed that final stress meets design requirement, and easily presstressed reinforcing steel occurs and breaks or damage
Problem can not be solved perfectly in the situation of bad anchorage, ultra stretching method.Therefore, prestressed anchor and tensioning system are still needed to be improved
Structure design, for tensioning construction provide convenience.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of two-way jack for prestressing force intelligent tensioning.
Technical solution is as follows:
A kind of two-way jack for prestressing force intelligent tensioning, it is critical that including cylinder body, which is equipped with two
A pars contractilis, the cylinder body, which runs through, is equipped with presstressed reinforcing steel via hole, and the telescopic direction of two pars contractilis is parallel to each other, two institutes
It states pars contractilis and stretches out the cylinder body along the both ends of the presstressed reinforcing steel via hole respectively, described pre- answer is corresponded to along two pars contractilis
Power muscle via hole is respectively equipped with presstressed reinforcing steel holding holes, and two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis,
The presstressed reinforcing steel holding holes on the tensioning pars contractilis form anchor ring fixation hole, on the press pars contractilis
The presstressed reinforcing steel holding holes form pressure plate fixation hole.Using the above design, it the advantage is that two works of two-way jack
Make portion's difference tensioned prestressing bar and press reversed pressure plate, successively work, press pars contractilis can actively press reversed compression
Plate is so that work anchor clamps presstressed reinforcing steel, than relying on presstressed reinforcing steel to spring back the side passively clamped after existing unidirectional jack tension
Formula can reduce prestressed loss, preferably control and improve stretch-draw effect.
As optimal technical scheme, above-mentioned cylinder body includes the outer sleeve and inner sleeve that coaxial line is arranged, the inner sleeve
Internal cavity forms the presstressed reinforcing steel via hole, and cylindric grease chamber is formed between the outer sleeve and inner sleeve, the grease chamber
Middle part is equipped with grease chamber isolation ring, which is fixedly connected with the inner wall of the outer wall of the inner sleeve and outer sleeve respectively,
The grease chamber is divided into two plunger shafts by the grease chamber isolation ring, and two pars contractilis are protruded into from the both ends of the grease chamber respectively
It in two plunger shafts, is sealed between the both ends of the grease chamber and corresponding pars contractilis, the corresponding institute of each plunger shaft
It states and is respectively equipped with pump nozzle and oil return nozzle on outer sleeve.Using the above design, the advantage is that through two independent plunger shafts
Cooperate with pars contractilis, forms two independent work departments, and compact-sized.
As optimal technical scheme, above-mentioned pars contractilis includes annular piston and retracting cylinder, and wherein annular piston circumferential direction is set to
In the plunger shaft, the inner end of the retracting cylinder is protruded into the plunger shaft along the centerline direction of the cylinder body and lives with ring-type
Plug connection, is equipped with sealing element between the retracting cylinder and the outer sleeve and inner sleeve, the pump nozzle and oil return nozzle distinguish position
In the two sides of the annular piston, the internal cavity of retracting cylinder forms the presstressed reinforcing steel holding holes.It is excellent using the above design
Point is to realize the jacking and reset of retracting cylinder using the design of easy structure.
As optimal technical scheme, installation card is equipped in the presstressed reinforcing steel holding holes of the retracting cylinder outer end
Ring, the center line of the installation snap ring are overlapped with the center line of the retracting cylinder, and the outer end face of the installation snap ring is equipped with against
Angle.Using the above design, setting installation snap ring the advantage is that on retracting cylinder and against chamfering, facilitate and anchor ring and anti-is fixedly mounted
To pressure plate.
As optimal technical scheme, above-mentioned two-way jack further includes the support tube being arranged with the cylinder body with center line,
The outer edge of the outer sleeve of the press pars contractilis side is connect with the inward flange of the support tube, the outer side edges of the support tube
Edge is equipped with outside flange.It uses and the advantage is that convenient bidirectional jack and the installation for the anchor ring that works cooperate to design.
It is above-mentioned that at least one phase magnet is equipped at chamfering as optimal technical scheme.It is excellent using the above design
Point is to cooperate with the corresponding phase magnet on installation anchor ring or reversed pressure plate, facilitates installation.
As optimal technical scheme, the quantity of above-mentioned phase magnet is three, three phase magnets it is circumferentially distributed in
At the chamfering inclined-plane.Using the above design, it the advantage is that installation anchor ring and reversed pressure plate are installed to suitable position, with
Retracting cylinder cooperation is close.
The utility model has the advantages that using the utility model has the beneficial effects that two work departments difference tensioning of two-way jack is pre-
Stress rib and reversed pressure plate is pressed, after pretensioning to predetermined pre-tensioning force value, press pars contractilis work actively presses reversed compression
Plate is so that work anchor clamps presstressed reinforcing steel, and compared to relying on after existing unidirectional jack tension, presstressed reinforcing steel rebound is passive to be clamped
Mode, prestressed loss can be reduced, preferably control and improve stretch-draw effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Applicable prestressed stretch-draw system structure diagram of the Fig. 2 by the utility model.
Specific embodiment
Below with reference to embodiment and attached drawing, the utility model is described in further detail.
As shown in Figure 1, being set on a kind of two-way jack for prestressing force intelligent tensioning, including cylinder body c3, cylinder body c3
There are two pars contractilis, the cylinder body c3, which runs through, is equipped with presstressed reinforcing steel via hole, and the telescopic direction of two pars contractilis is parallel to each other,
Two pars contractilis stretch out the cylinder body c3 along the both ends of the presstressed reinforcing steel via hole respectively, correspond on two pars contractilis
The presstressed reinforcing steel via hole is respectively equipped with presstressed reinforcing steel holding holes, and two pars contractilis are respectively formed tensioning pars contractilis and press
Pars contractilis, the presstressed reinforcing steel holding holes on the tensioning pars contractilis form anchor ring fixation hole c1, are located at the press
The presstressed reinforcing steel holding holes on pars contractilis form pressure plate fixation hole c2.
The cylinder body c3 includes the outer sleeve c5 that coaxial line is arranged and inner sleeve c6, the inner chamber bodily form of the inner sleeve c6
At the presstressed reinforcing steel via hole, cylindric grease chamber is formed between the outer sleeve c5 and inner sleeve c6, is set in the middle part of the grease chamber
There is grease chamber isolation ring c3a, grease chamber isolation ring c3a is fixed with the inner wall of the outer wall of the inner sleeve c6 and outer sleeve c5 respectively to be connected
It connects, which is divided into two plunger shaft c4 for the grease chamber, and two pars contractilis are respectively from the grease chamber
Both ends are protruded into two plunger shaft c4, are sealed between the both ends of the grease chamber and corresponding pars contractilis, each piston
Pump nozzle and oil return nozzle are respectively equipped on the corresponding outer sleeve c5 of chamber c4.
The pars contractilis includes annular piston c7 and retracting cylinder c8, and wherein annular piston c7 circumferential direction is set to the plunger shaft c4
It is interior, the inner end of the retracting cylinder c8 protruded into the plunger shaft c4 along the centerline direction of the cylinder body c3 and with annular piston c7
Connection is equipped with sealing element, the pump nozzle and oil return nozzle point between the retracting cylinder c8 and the outer sleeve c5 and inner sleeve c6
Not Wei Yu the annular piston c7 two sides, the internal cavity of retracting cylinder c8 forms the presstressed reinforcing steel holding holes.
Installation snap ring c10, the installation snap ring are equipped in the presstressed reinforcing steel holding holes of the outer end the retracting cylinder c8
The center line of c10 is overlapped with the center line of the retracting cylinder, and the outer end face of the installation snap ring c10 is equipped with against chamfering.It is described
At least one phase magnet c11 is equipped at chamfering, in the present embodiment, the quantity of the phase magnet c11 is three, three
The phase magnet c11 is circumferentially distributed at the chamfering inclined-plane.
Center line is provided with support tube c9 with the cylinder body c3, the outer sleeve 5 of the press pars contractilis side
Outer edge is connect with the inward flange of support tube c9, and the outer ledge of support tube c9 is equipped with outside flange.
Above-mentioned two-way jack is suitable for following prestressing force pull system:
As shown in Fig. 2, a kind of prestressing force intelligent tensioning system, including successively mutually abut and be set in along tensioning direction
Anchor plate component e on presstressed reinforcing steel, work anchor assemblies a, reversed pressure plate b, jack c and tool anchor assemblies d, it is described very heavy
Top c is above-mentioned two-way jack.The tool anchor assemblies d is installed at the installation snap ring c10 of the tensioning pars contractilis, institute
It states tool anchor assemblies d to be equipped with the annular installation chamfering being adapted against chamfering, anchor ring on the tool anchor assemblies d
Phase magnet d12 cooperates with corresponding phase magnet c11；The reversed pressure plate b is installed on the described of the press pars contractilis
The place snap ring c10 is installed, the reversed pressure plate b be equipped with the annular assembly chamfer b5 adaptable against chamfering, it is described
Pressing plate phase magnet b6 on reversed pressure plate b cooperates with corresponding phase magnet c11.
The flange of the support tube c9 outer ledge abuts the work anchor ring a1 of the work anchor assemblies a, and with thereon
Annular groove a6 cooperation.
After being installed, pump nozzle on the tensioning pars contractilis pressurizes oiling, to push on the tensioning pars contractilis
Retracting cylinder c8 stretch out, carry out tensioning.After reaching predetermined tensioning value, the pump nozzle pressurization oiling pressed on pars contractilis, from
And the reversed pressure plate b is pushed, the compression boss b2 being arranged on the reversed pressure plate b presses the work anchor assemblies a's
Work collet a2, clamps presstressed reinforcing steel.After the completion, oil liquid returns to grease chamber from the oil return nozzle, and the retracting cylinder resets, and completes to open
It is pulled through journey.
Finally, it should be noted that foregoing description is only the preferred embodiment of the utility model, the common skill of this field
Art personnel are under the enlightenment of the utility model, under the premise of without prejudice to the utility model aims and claim, can make
Multiple similar expressions, such transformation are each fallen within the protection scope of the utility model.
Claims (7)
1. a kind of two-way jack for prestressing force intelligent tensioning, it is characterised in that: including cylinder body (c3), on the cylinder body (c3)
If the cylinder body (c3), which is run through, is equipped with presstressed reinforcing steel via hole, and the telescopic direction of two pars contractilis is mutual there are two pars contractilis
In parallel, two pars contractilis stretch out the cylinder body (c3) along the both ends of the presstressed reinforcing steel via hole respectively, and two described flexible
The presstressed reinforcing steel via hole is corresponded in portion and is respectively equipped with presstressed reinforcing steel holding holes, and it is flexible that two pars contractilis are respectively formed tensioning
Portion and press pars contractilis, the presstressed reinforcing steel holding holes on the tensioning pars contractilis form anchor ring fixation hole (c1), position
Pressure plate fixation hole (c2) is formed in the presstressed reinforcing steel holding holes on the press pars contractilis.
2. a kind of two-way jack for prestressing force intelligent tensioning according to claim 1, it is characterised in that: the cylinder
Body (c3) includes the outer sleeve (c5) and inner sleeve (c6) that coaxial line is arranged, and the internal cavity of the inner sleeve (c6) forms described
Presstressed reinforcing steel via hole forms cylindric grease chamber between the outer sleeve (c5) and inner sleeve (c6), the middle part of the grease chamber is equipped with
Grease chamber isolation ring (c3a), the grease chamber isolation ring (c3a) inner wall with the outer wall of the inner sleeve (c6) and outer sleeve (c5) respectively
Be fixedly connected, which is divided into two plunger shafts (c4) for the grease chamber, two pars contractilis respectively from
The both ends of the grease chamber are protruded into two plunger shafts (c4), are sealed between the both ends of the grease chamber and corresponding pars contractilis,
Pump nozzle and oil return nozzle are respectively equipped on the corresponding outer sleeve (c5) of each plunger shaft (c4).
3. a kind of two-way jack for prestressing force intelligent tensioning according to claim 2, it is characterised in that: described to stretch
Contracting portion includes annular piston (c7) and retracting cylinder (c8), and wherein annular piston (c7) is circumferential is set in the plunger shaft (c4), institute
The inner end for stating retracting cylinder (c8) is protruded into the plunger shaft (c4) along the centerline direction of the cylinder body (c3) and and annular piston
(c7) it connects, sealing element, the pump nozzle is equipped between the retracting cylinder (c8) and the outer sleeve (c5) and inner sleeve (c6)
The two sides of the annular piston (c7) are located at oil return nozzle, the internal cavity of retracting cylinder (c8) forms the presstressed reinforcing steel folder
Hold hole.
4. a kind of two-way jack for prestressing force intelligent tensioning according to claim 3, it is characterised in that: close to institute
It states and is equipped with installation snap ring (c10), the center of the installation snap ring (c10) in the presstressed reinforcing steel holding holes of the outer end retracting cylinder (c8)
Line is overlapped with the center line of the retracting cylinder, and the outer end face of installation snap ring (c10) is equipped with against chamfering.
5. a kind of two-way jack for prestressing force intelligent tensioning according to claim 4, it is characterised in that: further include
The support tube (c9) being arranged with the cylinder body (c3) with center line, the outer sleeve (c5) of the press pars contractilis side it is outer
Edge is connect with the inward flange of the support tube (c9), and the outer ledge of the support tube (c9) is equipped with outside flange.
6. a kind of two-way jack for prestressing force intelligent tensioning according to claim 5, it is characterised in that: described to support
At least one phase magnet (c11) is equipped at chamfering.
7. a kind of two-way jack for prestressing force intelligent tensioning according to claim 6, it is characterised in that: described fixed
The quantity of position magnet (c11) is three, and three phase magnets (c11) are circumferentially distributed at the chamfering inclined-plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018201829311 | 2018-02-01 | ||
| CN201820182931 | 2018-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208561544U true CN208561544U (en) | 2019-03-01 |
Family
ID=65481944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820709524.1U Expired - Fee Related CN208561544U (en) | 2018-02-01 | 2018-05-14 | Two-way jack for prestressing force intelligent tensioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208561544U (en) |
-
2018
- 2018-05-14 CN CN201820709524.1U patent/CN208561544U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 Termination date: 20210514 |