CN208202592U - The non-return system of intelligent tensioning presstressed reinforcing steel - Google Patents

Abstract

The utility model discloses a kind of non-return system of intelligent tensioning presstressed reinforcing steel, including the work anchor assemblies being sequentially sleeved at along tensioning direction on presstressed reinforcing steel, reversed pressure plate and two-way jack, the two-way jack includes cylinder body, pars contractilis there are two being set on the cylinder body, the telescopic direction of two pars contractilis is parallel to each other, two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, the reversed pressure plate is installed on the press pars contractilis, the work anchor assemblies include the work anchor ring matched and work collet, the press pars contractilis pushes the reversed pressure plate to press the work collet, the work anchor assemblies are made to clamp the presstressed reinforcing steel.Using the utility model has the beneficial effects that, after the tensioning pars contractilis of jack completes scheduled tensioning work, press pars contractilis is started to work, and can make the firm clamping presstressed reinforcing steel of work anchor assemblies with the cooperation of reversed pressure plate, presstressed reinforcing steel rebound is reduced, so as to reduce prestressed loss.

Description

The non-return system of intelligent tensioning presstressed reinforcing steel

Technical field

The utility model relates to build and a kind of tool of field of bridge construction, and in particular to a kind of intelligent tensioning prestressing force The non-return system of muscle.

Background technique

Prestressing stretching technique is widely applied in building and bridge construction, can slow down concrete using pre-stress construction Crackle occur and extension process, prolong the service life.However, tensioning construction process wants material and construction technology It asks very high, is easier to the problem of loss of prestress occur.When loss of prestress typically occurs in traditional prestressing force load end, Since the retraction of presstressed reinforcing steel just makes to fasten between fixture and anchor ring, lost so as to cause the prestressing force of load.It applies at present It is to solve the problems, such as loss of prestress during work, the method for often requiring to use ultra stretching, even if the maximum of tensioning load is answered Power is greater than design prestressing force.However ultra stretching method does not often know stress loss amount, it cannot be guaranteed that final stress meets design It is required that and easily occur breaking or damaging the situation of anchorage, ultra stretching method is simultaneously unreliable.Therefore, prestressed anchor is still needed to be improved The design of the structure of tool and tensioning system, provides conveniently for tensioning construction.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of non-return system of intelligent tensioning presstressed reinforcing steel.

Technical solution is as follows:

A kind of non-return system of intelligent tensioning presstressed reinforcing steel, it is critical that including the work anchor assemblies set gradually, reversed Pressure plate and two-way jack；

The two-way jack includes cylinder body, is set on the cylinder body there are two pars contractilis, the flexible side of two pars contractilis To being parallel to each other, two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, install on the press pars contractilis There is the reversed pressure plate；

The work anchor assemblies include the work anchor ring matched and work collet, wherein the work anchor ring and reversed pressure Tight plate face setting；

The press pars contractilis pushes the reversed pressure plate to press the work collet, makes its clamping.

Using the above design, it the advantage is that the tensioning pars contractilis work of jack makes tension of prestressed tendon reach specified Drawing amount, press pars contractilis are started to work, and can be made the firm clamping presstressed reinforcing steel of work anchor assemblies with the cooperation of reversed pressure plate, be prevented pre- Stress rib rebound, so as to reduce prestressed loss.

As optimal technical scheme, above-mentioned reversed pressure plate includes pressure plate ontology, which includes mounting surface And pressure surface, the mounting surface abut the press pars contractilis, the pressure surface is equipped with compression boss, the compression boss direction The work collet is equipped with presstressed reinforcing steel at the compression boss center and perforates, and the both ends of presstressed reinforcing steel perforation are open respectively End face and the mounting surface in the compression boss；

The work anchor ring includes backing plate face and pressure-bearing surface, and the pressure-bearing surface is opposite with the pressure surface of the pressure plate ontology It answers, which is equipped with compression corresponding with the compression boss and docks blind hole, and compression docking hole bottom, which is run through, to be had Work anchor hole, is equipped with the work collet being matched therewith in the work anchor hole.

Using the above design, the work collet actively pressed on corresponding work anchor by compression boss the advantage is that, It can make work anchor is firm to clamp presstressed reinforcing steel, to reduce the rebound of presstressed reinforcing steel.

As optimal technical scheme, above-mentioned work anchor hole is round table-like through-hole, described biggish one end of work anchor hole internal diameter It is opened in the compression docking blind hole, the work anchor hole internal diameter is lesser open at one end in the backing plate face；

The filing appliance set has the round table-like outer wall being adapted with the work anchor hole inner wall, the filing appliance set setting In in the work anchor hole, stub end is fallen in the compression docking blind hole.

Using the above design, it the advantage is that truncated cone-shaped work collet and work anchor hole match, play clamping prestressing force The effect of muscle.

As optimal technical scheme, above-mentioned work collet center is equipped with presstressed reinforcing steel anchor hole, and the work collet is by least Two valve work clip sheet circumferential directions are assembled, the diameter of the stub end of the work collet be greater than the maximum inner diameter of the work anchor hole and Less than the internal diameter for compressing docking blind hole, the stub end of the work collet falls in the compression pair after stretching out the work anchor hole It connects in blind hole.

Using the above design, the folder realized using simple clip type filing appliance Analysis of Nested Design to presstressed reinforcing steel the advantage is that It holds.

As optimal technical scheme, runs through on the cylinder body of above-mentioned two-way jack and be equipped with presstressed reinforcing steel via hole, described in two Pars contractilis stretches out the cylinder body along the both ends of the presstressed reinforcing steel via hole respectively, corresponds to the prestressing force on two pars contractilis Muscle via hole is respectively equipped with presstressed reinforcing steel holding holes, and two pars contractilis stretch out institute along the both ends of the presstressed reinforcing steel via hole respectively Cylinder body is stated, 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 pre- Stress rib, 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, it the advantage is that and cooperated by two independent plunger shafts and pars contractilis, form two independences Work department, and it is 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.

Using the above design, the jacking and reset that retracting cylinder is realized using the design of easy structure the advantage is that.

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, the mounting surface edge of the pressure plate ontology Equipped with the annular assembly chamfer matched against chamfering；

The retracting cylinder of the press pars contractilis is equipped at least between chamfering and the annular assembly chamfer of pressure plate ontology One secondary phase magnet pair.

Using the above design, the assembly facilitated between reversed pressure plate and jack the advantage is that.

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 is recessed that the pressure-bearing surface of the work anchor ring is equipped with the annular matched with the flange of the support tube Slot, the annular groove are disposed around outside the compression docking blind hole.

It uses to design, the advantage is that annular groove is matched with the outer lateral flange of the support tube on jack, it is convenient The reliable installation of two-way jack and work anchor ring.

As optimal technical scheme, positioning mechanism, the localization machine are equipped between above-mentioned work anchor assemblies and reversed pressure plate Structure includes the anchor ring locating rod on the pressure plate ontology and the location hole on the work anchor ring, and the anchor ring is fixed Position bar protrudes into the positioning hole and is slidably matched with it；

The anchor ring locating rod is vertically installed in the pressure surface of the pressure plate ontology, and the location hole is set to described It works on the pressure-bearing surface of anchor ring, which is blind hole.

Using the above design, it the advantage is that reversed pressure plate stabilization approaches and press filing appliance during facilitating press Piece.

The utility model has the advantages that using the utility model has the beneficial effects that the tensioning pars contractilis of jack completes scheduled tensioning After work, press pars contractilis is started to work, and can be made the firm clamping presstressed reinforcing steel of work anchor assemblies with the cooperation of reversed pressure plate, be reduced Presstressed reinforcing steel rebound, so as to reduce prestressed loss.

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 in the portion 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 non-return system of intelligent tensioning presstressed reinforcing steel, including the work anchor assemblies a, reversed set gradually Pressure plate b and two-way jack c, the two-way jack c include cylinder body c3, are set on cylinder body c3 there are two pars contractilis, two The telescopic direction of the pars contractilis is parallel to each other, and two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, institute It states and the reversed pressure plate b is installed on press pars contractilis, the work anchor assemblies a includes the work anchor ring a1 matched and work Make collet a2, wherein work anchor ring a1 and the setting of reversed pressure plate b face, the press pars contractilis promotion reversed pressure plate B presses the work collet a2, makes its clamping.

In order to more clearly demonstrate the above-mentioned non-return system of intelligent tensioning presstressed reinforcing steel, the prestressing force being applicable in below with reference to it Tensioning 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 two-way jack comprising pars contractilis there are two setting on cylinder body c3, cylinder body c3, the flexible side of two pars contractilis To being parallel to each other, two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, install on the tensioning pars contractilis There is the moveable anchor component d, the reversed pressure plate b is installed on the press pars contractilis.

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 Flange e3 is arranged circumferentially on the small head end outer wall of stirrup e2, the oviduct e12, the side the flange e3 is provided with described Two tie hoop e4, the second tie hoop e4 are located at the flange e3 far from the side anchor plate ontology e11, and described first Tie hoop e2's and the second tie hoop e4 is oppositely oriented, and the first tie hoop e2 is close to the anchor plate ontology e11 One end connect with the anchor plate ontology e11 spot welding, the second tie hoop e4 is convex with this close to one end of the flange e3 Edge e3 spot welding connection.Compared to traditional components, the design of anchor plate component e can enhance to mixed below anchor plate in this programme Solidifying soil matrix body clasps power, the concrete strength of the region of stress concentration is improved, so that the tensioning for presstressed reinforcing steel provides effectively 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, and the fitting surface is towards the work Has anchor assemblies d, the pressure surface is equipped with compression boss b2, and work collet a2 described in compression boss b2 face, the compression Presstressed reinforcing steel perforation b3 is equipped at the center boss b2, the both ends of presstressed reinforcing steel perforation b3 are opened on the compression boss b2 respectively 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 protrudes 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 approach With 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 non-return system of intelligent tensioning presstressed reinforcing steel, it is characterised in that: including the work anchor assemblies (a), anti-set gradually To pressure plate (b) and two-way jack (c)；

The two-way jack (c) includes cylinder body (c3), is set on the cylinder body (c3) there are two pars contractilis, two pars contractilis Telescopic direction is parallel to each other, and two pars contractilis are respectively formed tensioning pars contractilis and press pars contractilis, the press pars contractilis On the reversed pressure plate (b) is installed；

The work anchor assemblies (a) include the work anchor ring (a1) matched and work collet (a2), wherein the anchor ring that works (a1) It is arranged with reversed pressure plate (b) face；

The press pars contractilis, which pushes the reversed pressure plate (b) to press the work collet (a2), makes its clamping.

2. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 1, it is characterised in that: the reversed pressure plate It (b) include pressure plate ontology (b1), which includes mounting surface and pressure surface, and the mounting surface abuts the top Pars contractilis is pressed, the pressure surface is equipped with compression boss (b2), and the compression boss (b2) are described towards the work collet (a2) Presstressed reinforcing steel perforation (b3) is equipped at the center compression boss (b2), the both ends of presstressed reinforcing steel perforation (b3) are opened on described respectively The end face of compression boss (b2) and the mounting surface；

The work anchor ring (a1) includes backing plate face and pressure-bearing surface, the pressure surface phase of the pressure-bearing surface and the pressure plate ontology (b1) Corresponding, which is equipped with compression corresponding with the compression boss (b2) docking blind hole (a3), which docks blind hole (a3) bottom hole is equipped with the work collet (a2) being matched therewith through there is work anchor hole (a4) in the work anchor hole (a4).

3. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 2, it is characterised in that: the work anchor hole (a4) For round table-like through-hole, work anchor hole (a4) internal diameter is biggish open at one end interior in compression docking blind hole (a3), described Anchor hole (a4) internal diameter that works is lesser open at one end in the backing plate face；

The work collet (a2) has the round table-like outer wall being adapted with work anchor hole (a4) inner wall, the work collet (a2) it is set in the work anchor hole (a4), stub end is fallen in compression docking blind hole (a3).

4. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 3, it is characterised in that: the work collet (a2) Center 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 filing appliance The diameter for covering the stub end of (a2) is greater than the maximum inner diameter of the work anchor hole (a4) and is less than compression docking blind hole (a3) Internal diameter, the stub end of the work collet (a2), which stretches out after the work anchor hole (a4), to be fallen in compressions and docks blind hole (a3) It is interior.

5. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 4, it is characterised in that: the two-way jack (c) through presstressed reinforcing steel via hole is equipped on cylinder body (c3), two pars contractilis are respectively along the two of the presstressed reinforcing steel via hole The cylinder body (c3) is stretched out at end, and the presstressed reinforcing steel via hole is corresponded on two pars contractilis and is respectively equipped with presstressed reinforcing steel clamping Hole, the presstressed reinforcing steel holding holes on the tensioning pars contractilis form anchor ring fixation hole (c1), stretch positioned at the press The presstressed reinforcing steel holding holes in contracting portion form pressure plate fixation hole (c2), and the reversed pressure plate (b) is installed on the pressure In tight plate fixation hole (c2).

6. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 5, it is characterised in that: the cylinder body (c3) includes The outer sleeve (c5) and inner sleeve (c6) that coaxial line is arranged, the internal cavity of the inner sleeve (c6) form the presstressed reinforcing steel mistake 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), which is fixedly connected with the inner wall of the outer wall of the inner sleeve (c6) and outer sleeve (c5) respectively, The grease chamber is divided into two plunger shafts (c4) by the grease chamber isolation ring (c3a), and two pars contractilis are respectively from the grease chamber Both ends protrude into two plunger shafts (c4), sealed between the both ends of the grease chamber and corresponding pars contractilis, it is each described Pump nozzle and oil return nozzle are respectively equipped on the corresponding outer sleeve (c5) of plunger shaft (c4).

7. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 6, it is characterised in that: the pars contractilis includes ring Shape piston (c7) and retracting cylinder (c8), wherein annular piston (c7) is circumferential is set in the plunger shaft (c4), the retracting cylinder (c8) inner end is protruded into the plunger shaft (c4) along the centerline direction of the cylinder body (c3) and is connect with annular piston (c7), Sealing element, the pump nozzle and oil return nozzle point are equipped 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.

8. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 7, it is characterised in that: close to the retracting cylinder (c8) be equipped with installation snap ring (c10) in the presstressed reinforcing steel holding holes of outer end, the center line of the installation snap ring (c10) with it is described The center line of 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) against the outer end face of installation snap ring (c10), the mounting surface edge of the pressure plate ontology (b1) is equipped with mounting surface With the annular assembly chamfer (b5) matched against chamfering；

It is described press pars contractilis retracting cylinder (c8) between chamfering and the annular assembly chamfer (b5) of pressure plate ontology (b1) Equipped at least one secondary phase magnet pair.

9. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 8, it is characterised in that: the two-way jack It (c) further include the support tube (c9) being arranged with the cylinder body (c3) with center line, the housing of the press pars contractilis side The outer edge of cylinder (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 turn over Side；The pressure-bearing surface of the work anchor ring (a1) is equipped with the annular groove (a6) matched with the flange of the support tube (c9), The annular groove (a6) is disposed around compression docking blind hole (a3) outside.

10. the non-return system of intelligent tensioning presstressed reinforcing steel according to claim 4, it is characterised in that: the work anchor assemblies (a) positioning mechanism is equipped between reversed pressure plate (b), which includes the anchor on the pressure plate ontology (b1) Ring locating rod (b4) and the location hole (a5) being set on the work anchor ring (a1), it is described fixed that the anchor ring locating rod (b4) is protruded into It is slidably matched in position hole (a5) with it；The anchor ring locating rod (b4) 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), which is blind hole.