CN208378307U - Intelligent tensioning presstressed reinforcing steel jacks fastening assembly - Google Patents

Abstract

The utility model discloses a kind of intelligent tensioning presstressed reinforcing steel jacking fastening assembly, including two-way jack and reversed pressure plate, the two-way jack includes 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, two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, and the outer end of the press pars contractilis is equipped with the reversed pressure plate.Using the utility model has the beneficial effects that, compression boss are pushed by the press pars contractilis of two-way jack, actively press the work clip sheet on corresponding work anchor, work anchor can be made actively to clamp presstressed reinforcing steel, to reduce the rebound of presstressed reinforcing steel, loss of prestress is reduced, so as to avoid possible excessive tensioning.

Description

Intelligent tensioning presstressed reinforcing steel jacks fastening assembly

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 used for prestressed stretch-draw The intelligent tensioning presstressed reinforcing steel that system uses jacks fastening assembly.

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 intelligent tensioning prestressing force that cooperation pressing device uses Top rib rises fastening assembly.

Technical solution is as follows:

A kind of intelligent tensioning presstressed reinforcing steel jacking fastening assembly, including two-way jack and reversed pressure plate, it is crucial to exist In the two-way jack includes cylinder body, is set on the cylinder body there are two pars contractilis, and the cylinder body, which runs through, is equipped with presstressed reinforcing steel mistake The telescopic direction in hole, two pars contractilis is parallel to each other, and two pars contractilis are respectively along the two of the presstressed reinforcing steel via hole The cylinder body is stretched out at end, and two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, the press pars contractilis Outer end is equipped with the reversed pressure plate.Using the above design, two work departments difference of two-way jack the advantage is that Tensioned prestressing bar and the reversed pressure plate of press, successively work, and press pars contractilis can actively press reversed pressure plate so that work Make the tight presstressed reinforcing steel of grip, it, can than relying on presstressed reinforcing steel to spring back the mode passively clamped after existing unidirectional jack tension Prestressed loss is reduced, stretch-draw effect is preferably controlled and improve.

As optimal technical scheme, the presstressed reinforcing steel via hole is corresponded on two pars contractilis and is respectively equipped with presstressed reinforcing steel Holding holes, the presstressed reinforcing steel holding holes on the tensioning pars contractilis form anchor ring fixation hole, stretch positioned at the press The presstressed reinforcing steel holding holes in contracting portion form pressure plate fixation hole, and the reversed pressure plate is installed on the pressure plate and fixes In hole.Using the above design, it the advantage is that presstressed reinforcing steel holding holes are connected with presstressed reinforcing steel via hole, conveniently wear prestressing force Muscle, while the installation position of reversed pressure plate and moveable anchor being integrated into presstressed reinforcing steel holding holes, design is reasonable.

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 the retracting cylinder forms the presstressed reinforcing steel holding holes.It is designed using above, It the advantage is that the jacking and reset that retracting cylinder is realized using the design of easy structure.

As optimal technical scheme, above-mentioned reversed pressure plate includes pressure plate ontology, which is circular slab, should Pressure plate ontology includes the pressure surface and mounting surface backwards to setting, and the mounting surface is towards the tensioning pars contractilis, the pressure Face is equipped with compression boss, is equipped with presstressed reinforcing steel at the compression boss center and perforates, the both ends difference of presstressed reinforcing steel perforation Be opened on the compression boss end face and the mounting surface.Using the above design, it the advantage is that presstressed reinforcing steel passes freely through Compression boss actively press the work clip sheet on corresponding work anchor by compression boss, work anchor can be made actively to clamp pre- Stress rib.

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, outer end face of the mounting surface of the pressure plate ontology against the installation snap ring for pressing pars contractilis, the pressure plate The mounting surface edge of ontology is equipped with annular assembly chamfer, which matches with described against chamfering.More than Design, the advantage is that the assembly facilitated between reversed pressure plate and jack.

As optimal technical scheme, the retracting cylinder of above-mentioned press pars contractilis is assembled against the annular of chamfering and pressure plate ontology An at least pressing plate pair phase magnet pair is equipped between chamfering, the phase magnet is to including being respectively arranged on the master at chamfering Phase magnet and the pressing plate pair phase magnet at the annular assembly chamfer, the pressing plate pair phase magnet is interior to be set to the pressure Tight plate ontology.Using the above design, the installation for facilitating reversed pressure plate the advantage is that.

As optimal technical scheme, at least one anchor ring locating rod is additionally provided in the pressure surface of above-mentioned pressure plate ontology, Pressure surface of the anchor ring locating rod perpendicular to the pressure plate ontology.Using the above design, it the advantage is that and facilitate guidance reversed Pressure plate is stablized close to work anchor and press work clip sheet.

As optimal technical scheme, the extension end end of above-mentioned compression boss and the anchor ring locating rod is equipped with falls outside Angle.Using the above design, it the advantage is that and be conveniently respectively protruding into corresponding compression butt hole and positioning hole on work anchor ring.

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.On the flange and work anchor ring for using the outer ledge setting that the advantage is that support tube to design Circular groove match, convenient bidirectional jack and work anchor ring between assembly.

The utility model has the advantages that using the utility model has the beneficial effects that the press pars contractilis by two-way jack pushes pressure Tight boss actively presses the work clip sheet on corresponding work anchor, work anchor can be made actively to clamp presstressed reinforcing steel, to reduce The rebound of presstressed reinforcing steel reduces loss of prestress, so as to avoid possible excessive tensioning.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

The structural schematic diagram for the prestressing force pull system that Fig. 2 is applicable in by the utility model；

Fig. 3 is the assembling structure schematic diagram of reversed pressure plate and the anchor assemblies that work；

Fig. 4 is the structural schematic diagram of work anchor assemblies；

Fig. 5 is the structural schematic diagram of reversed pressure plate；

Fig. 6 is the structural schematic diagram of tool anchor assemblies；

Fig. 7 is the enlarged drawing of m in Fig. 6.

Specific embodiment

Below with reference to embodiment and attached drawing, the utility model is described in further detail.

As shown in Figure 1, a kind of intelligent tensioning presstressed reinforcing steel jacks fastening assembly, including two-way jack c and reversed compression Plate b, the two-way jack c include cylinder body c3, are set on cylinder body c3 there are two pars contractilis, and the cylinder body c3 runs through to be equipped with to be answered in advance Power muscle via hole, the telescopic direction of two pars contractilis are parallel to each other, and two pars contractilis are respectively along the presstressed reinforcing steel mistake The cylinder body c3 is stretched out at the both ends in hole, and two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, the press The outer end of pars contractilis is equipped with the reversed pressure plate b.

In order to more clearly demonstrate the use state of above-mentioned presstressed reinforcing steel jacking fastening assembly, it is applicable in below with reference to it Prestressing force pull system is introduced:

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 aforementioned two-way jack.

The anchor plate component e is fixed in concrete substrate, and the anchor plate component e includes anchor plate e1, the first spiral shell Revolving stirrup e2 and the second tie hoop e4, the anchor plate e1 includes anchor plate ontology e11 and oviduct e12, the anchor plate Ontology e11 includes the loading end and abutment face backwards to setting, and the anchor plate ontology e11 is provided centrally with presstressed reinforcing steel through-hole, A circle anchor ring bayonet e6, the work anchor are equipped with around the presstressed reinforcing steel through-hole on the loading end of the anchor plate ontology e11 Ring a1 is fallen in the anchor ring bayonet e6.

The stub end of the oviduct e12 is connected on the abutment face of the anchor plate ontology e11, is easy to use, institute The oviduct e12 and anchor plate ontology e11 is stated to be integrally formed.The outer concentric locking collar of the oviduct e12 is equipped with first spiral Stirrup e2, microcephaly's end cap of the oviduct e12 are connected to bellows e5, and circumferential direction is set on the small head end outer wall of the oviduct e12 It is equipped with flange e3, the side the flange e3 is provided with the second tie hoop e4, which is located at described convex Edge e3 is far from the side anchor plate ontology e11, oppositely oriented, the institute of the first tie hoop e2 and the second tie hoop e4 It states the first tie hoop e2 to connect close to one end of the anchor plate ontology e11 with the anchor plate ontology e11 spot welding, described second Tie hoop e4 is connect close to one end of the flange e3 with flange e3 spot welding.Compared to traditional components, anchor pad in this programme The design of board group part e, which can enhance, clasps power to the concrete substrate below anchor plate, improves the mixed of the region of stress concentration Solidifying soil intensity, so that the tensioning for presstressed reinforcing steel provides strong support.

As shown in Figures 3 and 4, the work anchor assemblies a is resisted against on the loading end of the anchor plate ontology e11, the work Making anchor assemblies a includes being equipped with work anchor hole a4, the work on work anchor ring a1 and work collet a2, the work anchor ring a1 Collet a2 is matched with the work anchor hole a4；

The work anchor ring a1 includes backing plate face and pressure-bearing surface, and the backing plate face is described to hold against the anchor plate component e Pressure surface is inserted into the work anchor hole a4, the press from the pressure-bearing surface towards the reversed pressure plate b, the work collet a2 Pars contractilis pushes the reversed pressure plate b to press the work collet a2；

That match with work anchor assemblies a is the reversed pressure plate b.As shown in figure 5, the reversed pressure plate b includes Pressure plate ontology b1, pressure plate ontology b1 include the fitting surface and pressure surface backwards to setting, when installation, the fitting surface direction The tool anchor assemblies d, the pressure surface are equipped with compression boss b2, and the compression boss b2 is worn at center equipped with presstressed reinforcing steel Hole b3, the presstressed reinforcing steel perforation b3 both ends be opened on respectively the compression boss b2 end face and the fitting surface；

The pressure-bearing surface of the work anchor ring a1 is equipped with compression corresponding with the compression boss b2 and docks blind hole a3, should Docking blind hole a3 bottom hole is compressed through there is the work anchor hole a4, which is truncated cone-shaped, the work anchor hole a4 internal diameter Biggish open at one end in compression docking blind hole a3, the work anchor hole a4 internal diameter is lesser open at one end in the backing plate Face；

The outer wall of the work collet a2 is the truncated cone-shaped being adapted with the work anchor hole a4 inner wall, the work collet The center a2 is equipped with presstressed reinforcing steel anchor hole, and the work collet a2 is assembled by least two valve work clip sheet circumferential directions, the work Make the diameter of the stub end of collet a2 greater than the maximum inner diameter of the work anchor hole a4 and is less than the compression docking blind hole a3's Internal diameter, the stub end of the work collet a2 is fallen in the compression docking blind hole a3 after stretching out the work anchor hole a4, described Compression boss b2 presses the big end surface of the work collet a2.

For convenience of the cooperation between the reversed pressure plate b and work anchor ring a1, the reversed pressure plate b and work anchor ring It is equipped with positioning mechanism between a1, which includes the anchor ring locating rod b4 on the pressure plate ontology b1 and be set to institute The location hole a5, the anchor ring locating rod b4 stated on work anchor ring a1 is vertically installed in the pressure surface of the pressure plate ontology b1 On, the location hole a5 is set on the pressure-bearing surface of the work anchor ring a1, and location hole a5 is blind hole, the anchor ring locating rod B4 is protruded into the location hole a5 and is slidably matched with it.This design enables anchor ring locating rod that reversed pressure plate stabilization to be guided to support Close and press work clip sheet.

The tensioning of the two-way jack and press function are achieved in that on the cylinder body c3 of the two-way jack and pass through It is equipped with presstressed reinforcing steel via hole, two pars contractilis stretch out the cylinder body c3 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, is located at the tensioning pars contractilis On the presstressed reinforcing steel holding holes form anchor ring fixation hole c1, the tool anchor assemblies d is installed in anchor ring fixation hole c1, The presstressed reinforcing steel holding holes on the press pars contractilis form pressure plate fixation hole c2, the reversed pressure plate b peace Loaded in 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 Interior, the inner end of the retracting cylinder c8 is protruded into the plunger shaft c4 along the centerline direction of the cylinder body c3 and lives with the ring-type C7 connection is filled in, sealing element, the pump nozzle and oil return are equipped between the retracting cylinder c8 and the outer sleeve c5 and inner sleeve c6 Mouth is located at the two sides of the annular piston c7, and the internal cavity of the retracting cylinder c8 forms the presstressed reinforcing steel holding holes.

As shown in fig. 6, the tool anchor assemblies d is used for the clamping of presstressed reinforcing steel, the tool anchor assemblies d includes moveable anchor Ring d1 and tool collet d2；The tool anchor ring d1 includes working face and mounting surface, and running through on the tool anchor ring d1 has tool Anchor hole d3, tool anchor hole d3 is in a circular table shape, and the tool anchor hole d3 internal diameter is biggish open at one end in the working face, the tool Anchor hole d3 internal diameter is lesser open at one end in the mounting surface；

The tool collet d2 is round table-like to be adapted with the inner wall of the tool anchor hole d3, and the tool collet d2 is set It is placed in tool anchor hole d3, is equipped in the tool collet d2 and is engaged with tool anchor hole d3 with the presstressed reinforcing steel of hole heart line Hole.

The d of tool anchor assemblies described in the present embodiment, which has been done, just wears formula design.Specifically, the tool collet d2 is by least two Valve tool clamping piece circumferential direction is assembled, and the stub end of the tool collet d2 is connected with intermediate plate lifting component, the tool collet The small head end of d2 is connected with intermediate plate return unit d5, is equipped with lifting operating parts between the intermediate plate lifting component and tool anchor ring d1.

As shown in fig. 7, it is equipped with intermediate plate guide chute d4 along its rotary table generatrix direction on the inner wall of the tool anchor hole d3, it should Intermediate plate guide chute d4 and the tool clamping piece correspond, and the opening of intermediate plate guide chute d4 inside contracts, and intermediate plate guiding is slided Sliding guide piece d41 is respectively equipped in slot d4, sliding guide piece d41 is connected with the corresponding tool clamping piece；

Specifically, the intermediate plate return unit d5 is dynamic clamping head and quiet clamping head, and it is multiple that the tool clamping piece is connected separately with the elasticity Position part, the dynamic clamping head and quiet clamping head are arranged along its length in the intermediate plate guide chute d4, one end of the dynamic clamping head and quiet clamping head It is connected with the inner wall of the intermediate plate guide chute d4, the other end of the dynamic clamping head and quiet clamping head is connected with the tool clamping piece, described The connecting pin of dynamic clamping head and quiet clamping head and the intermediate plate guide chute d4 inner wall is close to the mounting surface, the dynamic clamping head and quiet clamping head and tool The connecting pin of intermediate plate is far from the mounting surface.

The tool clamping piece is pulled to the major part extreme direction of the tool anchor hole d3, in the guidance of sliding guide piece d41 Under, each tool clamping piece is slided along rotary table generatrix direction, is helped to maintain the stability of tool clamping piece sliding, is avoided multiple folders Interference and dislocation between piece conveniently wear presstressed reinforcing steel to expand presstressed reinforcing steel keying aperture, after use, the folder Piece return unit d5 can assistance tool intermediate plate be returned in the tool anchor hole d3.

For convenience of the tool clamping piece is pulled, the intermediate plate lifting component includes intermediate plate lifting plate d6 and lifting connector D7, wherein intermediate plate lifting plate d6 is located at the working face side of the tool anchor ring d1, and the intermediate plate lifting plate d6 is equipped with and institute The corresponding presstressed reinforcing steel through hole d8 of tool anchor hole d3 is stated, the tool clamping piece is connected separately with the lifting connector d7, The both ends of the lifting connector d7 are connected with the tool clamping piece and intermediate plate lifting plate d6 respectively, the lifting connector D7 is also disposed in the intermediate plate guide chute d4, avoids occupying the space in the tool anchor hole d3.

Specifically, the lifting connector d7 and intermediate plate return unit d5 can be spring.

For convenience of operation, the lifting operating parts includes push-pull rod d9, and push-pull rod d9 lifts plate perpendicular to the intermediate plate D6, the one end the push-pull rod d9 are threadedly coupled with the tool anchor ring d1, and the other end activity of the push-pull rod d9 is pierced by described Intermediate plate lifts plate d6, and bulb d10 is equipped in the middle part of the push-pull rod d9, and the bulb d10 is located at intermediate plate lifting plate d6 Between the tool anchor ring d1, the working face is equipped with resigning breach d11 corresponding with the bulb d10.

As shown in Fig. 2, for convenience of the top of the tensioning pars contractilis of tool anchor assemblies and jack, reversed pressure plate and jack The assembly between pars contractilis and jack and work anchor ring is pressed, the present embodiment has following design:

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 c8, and the outer end face of installation snap ring c10 is equipped with against chamfering；

The installation snap ring of the fitting surface of the pressure plate ontology b1 on the retracting cylinder c8 of the press pars contractilis The outer end face of c10, the fitting surface edge of the pressure plate ontology b1 is equipped with to fall with the annular assembly matched against chamfering Angle b5；

The installation snap ring c10 of the mounting surface of the tool anchor ring d1 on the retracting cylinder c8 of the tensioning pars contractilis Outer end face, the mounting surface edge of the tool anchor ring d1 is equipped with and the annular installation chamfering matched against chamfering；

At least one secondary phase magnet pair is equipped between the retracting cylinder c8 and pressure plate ontology b1 of the press pars contractilis, it is described At least one secondary phase magnet pair also is provided between the retracting cylinder c8 of tensioning pars contractilis and the tool anchor ring d1；

For the phase magnet to including master positioning magnet c11 and secondary phase magnet, the master positioning magnet is respectively arranged on institute On the chamfering inclined-plane against chamfering for stating installation snap ring c10；The pair phase magnet includes pressing plate pair phase magnet b6 and anchor ring In secondary phase magnet d12, the pressing plate pair phase magnet b6 at the annular assembly chamfer b5 of the pressure plate ontology b1, institute It states in anchor ring pair phase magnet d12 at the annular installation chamfering of the tool anchor ring d1；

The cylinder body c3 is provided with support tube c9 with center line, and the outer sleeve c5's of the press pars contractilis side is outer Edge is connect with the inside edge of support tube c9, and the outer ledge of support tube c9 is equipped with outside flange, the work anchor The pressure-bearing surface of ring a1 is equipped with the annular groove a6 matched with the flange, and annular groove a6 is disposed around the compression docking Outside blind hole a3；

The extension end end of the compression boss b2 and the anchor ring locating rod b4 are equipped with outer chamfer.

Since a prestressed girder needs while using more presstressed reinforcing steels, above-mentioned work anchor assemblies in engineering practice A and tool anchor assemblies d is porous anchor, and multiple compression boss b2 and pre- are correspondingly provided on the reversed pressure plate b Stress rib perforation b3.

Prestressing force pull system is installed as shown in Figure 2, and the tensioning pars contractilis work of the two-way jack c is opened Beginning tensioning, after reaching predetermined tensioning amount, the press pars contractilis of the jack is pushed described in the reversed pressure plate b press Work collet a2, and the work anchor assemblies a is made to clamp the presstressed reinforcing steel, so that presstressed reinforcing steel be avoided to spring back, reduces prestressing force Loss.

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 (10)

1. a kind of intelligent tensioning presstressed reinforcing steel jacks fastening assembly, including two-way jack (c) and reversed pressure plate (b), special Sign is: the two-way jack (c) includes cylinder body (c3), is set on the cylinder body (c3) there are two pars contractilis, the cylinder body (c3) It is parallel to each other through the telescopic direction for being equipped with presstressed reinforcing steel via hole, two pars contractilis, two pars contractilis are respectively along institute The cylinder body (c3) is stretched out at the both ends for stating presstressed reinforcing steel via hole, and two pars contractilis are respectively formed tensioning pars contractilis and press is stretched The outer end in contracting portion, the press pars contractilis is equipped with the reversed pressure plate (b).

2. intelligent tensioning presstressed reinforcing steel according to claim 1 jacks fastening assembly, it is characterised in that: two described flexible The presstressed reinforcing steel via hole is corresponded in portion and is respectively equipped with presstressed reinforcing steel holding holes, and described on the tensioning pars contractilis pre- answers Power muscle holding holes form anchor ring fixation hole (c1), and the presstressed reinforcing steel holding holes on the press pars contractilis, which are formed, to be compressed Plate fixation hole (c2), the reversed pressure plate (b) are installed in the pressure plate fixation hole (c2).

3. intelligent tensioning presstressed reinforcing steel according to claim 2 jacks fastening assembly, it is characterised in that: the cylinder body (c3) The outer sleeve (c5) and inner sleeve (c6) being arranged including coaxial line, the internal cavity of the inner sleeve (c6) form the prestressing force Muscle via hole, forms cylindric grease chamber between the outer sleeve (c5) and inner sleeve (c6), the middle part of the grease chamber be equipped with grease chamber every From ring (c3a), which fixes with the inner wall of the outer wall of the inner sleeve (c6) and outer sleeve (c5) respectively connects It connects, which is divided into two plunger shafts (c4) for the grease chamber, and two pars contractilis are respectively from the oil The both ends of room are protruded into two plunger shafts (c4), are sealed between the both ends of the grease chamber and corresponding pars contractilis, Mei Gesuo It states and is respectively equipped with pump nozzle and oil return nozzle on the corresponding outer sleeve (c5) of plunger shaft (c4).

4. intelligent tensioning presstressed reinforcing steel according to claim 3 jacks fastening assembly, it is characterised in that: the pars contractilis packet Annular piston (c7) and retracting cylinder (c8) are included, wherein annular piston (c7) is circumferential is set in the plunger shaft (c4), described flexible The inner end of cylinder (c8) is protruded into the plunger shaft (c4) and with annular piston (c7) even along the centerline direction of the cylinder body (c3) It connects, sealing element, the pump nozzle and oil return is equipped between the retracting cylinder (c8) and the outer sleeve (c5) and inner sleeve (c6) Mouth is located at the two sides of the annular piston (c7), and the internal cavity of the retracting cylinder (c8) forms the presstressed reinforcing steel clamping Hole.

5. intelligent tensioning presstressed reinforcing steel according to claim 4 jacks fastening assembly, it is characterised in that: the reversed compression Plate (b) includes pressure plate ontology (b1), which is circular slab, which includes backwards to setting Pressure surface and mounting surface, the mounting surface is towards the tensioning pars contractilis, and the pressure surface is equipped with compression boss (b2), institute It states and is equipped with presstressed reinforcing steel perforation (b3) at the center compression boss (b2), the both ends of presstressed reinforcing steel perforation (b3) are opened on institute respectively State compression boss (b2) end face and the mounting surface.

6. intelligent tensioning presstressed reinforcing steel according to claim 5 jacks fastening assembly, it is characterised in that: close to described flexible Installation snap ring (c10), the center line of the installation snap ring (c10) and institute are equipped in the presstressed reinforcing steel holding holes of cylinder outer end (c8) The center line for stating retracting cylinder (c8) is overlapped, and the outer end face of installation snap ring (c10) is equipped with against chamfering, the pressure plate ontology (b1) outer end face of the mounting surface against the installation snap ring (c10) of the press pars contractilis, the pressure plate ontology (b1) Mounting surface edge be equipped with annular assembly chamfer (b5), which matches with described against chamfering.

7. intelligent tensioning presstressed reinforcing steel according to claim 5 jacks fastening assembly, it is characterised in that: the press is flexible The retracting cylinder (c8) in portion is equipped at least one secondary positioning magnetic between chamfering and the annular assembly chamfer (b5) of pressure plate ontology (b1) Iron pair, the phase magnet is to including being respectively arranged on the master positioning magnet (c11) at chamfering and being set to the annular Pressing plate pair phase magnet (b6) at assembly chamfer (b5), the pressing plate pair phase magnet (b6) is interior to be set to the pressure plate ontology (b1)。

8. intelligent tensioning presstressed reinforcing steel according to claim 7 jacks fastening assembly, it is characterised in that: the pressure plate sheet At least one anchor ring locating rod (b4) is additionally provided in the pressure surface of body (b1), the anchor ring locating rod (b4) is perpendicular to the compression The pressure surface of plate ontology (b1).

9. intelligent tensioning presstressed reinforcing steel according to claim 8 jacks fastening assembly, it is characterised in that: the compression boss (b2) and the extension end end of the anchor ring locating rod (b4) is equipped with outer chamfer.

10. intelligent tensioning presstressed reinforcing steel according to claim 4 jacks fastening assembly, it is characterised in that: described two-way thousand Jin top (c) further includes the support tube (c9) being arranged with the cylinder body (c3) with center line, described to press the described of pars contractilis side The outer edge of outer sleeve (c5) 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.