CN208201659U - Prestressing force intelligent tensioning work anchor - Google Patents

Abstract

The utility model discloses a kind of prestressing force intelligent tensioning work anchor, including work anchor ring and work collet, the work anchor ring includes backing plate face and pressure-bearing surface, the pressure-bearing surface, which is equipped with, compresses docking blind hole, the work anchor hole for having the work anchor ring is run through at compression docking hole bottom, the work anchor hole internal diameter is biggish open at one end in compression docking blind hole, and 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, and the filing appliance set is set in the work anchor hole, and stub end is fallen in the compression docking blind hole.Using the utility model has the beneficial effects that actively pressing work clip sheet by compression boss with the reversed pressure plate cooperation with compression boss, 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

Prestressing force intelligent tensioning work anchor

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 prestressing force intelligent tensioning Work anchor.

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 prestressing force intelligent tensioning work anchor.

Technical solution is as follows:

A kind of prestressing force intelligent tensioning work anchor, including work anchor ring and work collet, it is critical that the work anchor Ring includes backing plate face and pressure-bearing surface, and the pressure-bearing surface, which is equipped with, compresses docking blind hole, which docks hole bottom through State the work anchor hole of work anchor ring, the work anchor hole internal diameter it is biggish it is open at one end in the compression docking blind hole in, the work Anchor hole internal diameter is lesser open at one end in the backing plate face；Filing appliance set, which has, to be adapted with the work anchor hole inner wall Round table-like outer wall, the filing appliance set are set in the work anchor hole, and stub end is fallen in the compression docking blind hole.It adopts With the above design, it the advantage is that compression docking blind hole provides for compression boss and allow bit space, facilitate compression boss actively top Corresponding work collet is pressed, work anchor can be made actively to clamp presstressed reinforcing steel, to reduce the rebound of presstressed reinforcing steel, reduces prestressing force Loss, so as to avoid possible excessive tensioning.

As optimal technical scheme, above-mentioned work anchor ring is equipped with location hole, which is blind hole, is opened on described On pressure-bearing surface.Using the above design, it the advantage is that the convenient anchor ring locating rod on reversed pressure plate cooperates, guidance stabilization is leaned on Nearly work anchor ring and press work collet.

As optimal technical scheme, above-mentioned pressure-bearing surface is equipped with annular groove, which is disposed around the compression pair It connects outside blind hole.Using the above design, it the advantage is that annular groove is matched with the outer lateral flange of the support tube on jack, side Just the reliable installation of two-way jack and work anchor ring.

As optimal technical scheme, above-mentioned work collet center is perforated equipped with presstressed reinforcing steel, and the work collet is by least two Valve work clip sheet circumferential direction is assembled, and the diameter of the stub end of the work collet is greater than the maximum inner diameter of the work anchor hole and small In the internal diameter for compressing docking blind hole, the stub end of the work collet falls in the compression docking after stretching out the work anchor hole 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, the quantity of above-mentioned location hole is three, and three location hole dispersed distributions are in described It works on anchor ring.Using the above design, it the advantage is that reversed pressure plate stabilization approaches and press work during facilitating press Intermediate plate.

As optimal technical scheme, above-mentioned work anchor ring is equipped with N number of compression and docks blind hole, and N is positive integer, N number of The docking blind hole that compresses is uniformly distributed around the center circumferential direction of the work anchor ring, is distinguished at each compression docking blind hole Equipped with work anchor hole, the work collet is respectively equipped in all work anchor holes.Using the above design, the side of the advantage is that Just the synchronous tensioning for carrying out more presstressed reinforcing steels.

The utility model has the advantages that using the utility model has the beneficial effects that passing through with the reversed pressure plate cooperation with compression boss Compression boss actively press work clip sheet, work anchor can be made actively to clamp presstressed reinforcing steel, so that the rebound of presstressed reinforcing steel is reduced, Loss of prestress is reduced, so as to avoid possible excessive tensioning.

Detailed description of the invention

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

Fig. 2 is the structural schematic diagram of work anchor ring；

Fig. 3 is the cross-sectional view of A-A ' in Fig. 1；

The prestressed stretch-draw system structure diagram that Fig. 4 is applicable in 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 Figures 1 to 3, a kind of prestressing force intelligent tensioning work anchor, including the work anchor ring a1 and collet a2 that works, it is described Work anchor ring a1 includes backing plate face and pressure-bearing surface, and the pressure-bearing surface, which is equipped with, compresses docking blind hole a3, which docks blind hole a3 Bottom hole runs through the work anchor hole a4 for having the work anchor ring a1, and the work anchor hole a4 internal diameter is biggish open at one end in the compression It docks in blind hole a3, the work anchor hole a4 internal diameter 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 the work anchor hole a4 inner wall, the work collet A2 is set in the work anchor hole a4, and stub end is fallen in the compression docking blind hole a3.

Specifically, the center work collet a2 is perforated equipped with presstressed reinforcing steel, which is worked by least two valves Intermediate plate circumferential direction is assembled, and the diameter of the stub end of work collet a2 is greater than the maximum inner diameter of the work anchor hole a4 and is less than The internal diameter for compressing docking blind hole a3, the stub end of work collet a2 fall in the compression after stretching out the work anchor hole a4 It docks in blind hole a3.

The work anchor ring a1 is equipped with location hole a5, and location hole a5 is blind hole, is opened on the pressure-bearing surface, this In embodiment, the quantity of the location hole a5 is three, and three location hole a5 dispersed distributions are on the work anchor ring a1.

It is additionally provided with annular groove a6 on the pressure-bearing surface, is disposed around outside the compression docking blind hole a3.

For the situation suitable for more presstressed reinforcing steel simultaneous tensions, the work anchor ring a1 is equipped with N number of compression pair Blind hole a3 is met, N is positive integer, and N number of docking blind hole a3 that compresses is uniformly distributed around the center circumferential direction of the work anchor ring a1, It is respectively equipped with work anchor hole a4 at each compression docking blind hole a3, is respectively equipped with the work in all work anchor hole a4 Make collet a2.

Above-mentioned work anchor assemblies are suitable for following prestressing force pull system:

As shown in figure 4, 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 x, work anchor assemblies a, reversed pressure plate b, jack c and tool anchor assemblies d, described thousand Jin top c is two-way jack, which is provided with tensioning pars contractilis and press pars contractilis that telescopic direction is parallel to each other.The moveable anchor Component d is installed on the tensioning pars contractilis of the two-way jack, and the reversed pressure plate b is installed on the two-way jack It presses on pars contractilis.

The backing plate face of the work anchor ring a1 against the anchor plate component e, the reversed pressure plate b be equipped with it is described The compression boss b2 that butt hole a3 is matched is compressed, the anchor ring locating rod b4 matched with the location hole a5 is additionally provided with.

The outer cylinder body of press pars contractilis one end of the two-way jack is equipped with support tube c9, support tube c9 outer side edges The flange of edge abuts the work anchor ring a1, and cooperates with annular groove a6 thereon.

After being installed, pump nozzle on the tensioning pars contractilis pressurizes oiling, and the tensioning pars contractilis carries out tensioning.It reaches To after predetermined tensioning value, the pump nozzle oil inlet pressed on pars contractilis, to push the reversed pressure plate b, the compression Boss b2 presses the work collet a2, and the work anchor assemblies is made to clamp presstressed reinforcing steel x.During this, the anchor ring positioning Bar b4 is matched with location hole a5, and the reversed pressure plate b stabilization is guided to approach and press the work collet a2.After the completion, Oil liquid returns to grease chamber from the oil return nozzle, and the retracting cylinder resets, and completes stretching process.

Finally, it should be noted that foregoing description is only the preferred embodiment of the utility model, the ordinary skill of this field Personnel are under the enlightenment of the utility model, under the premise of without prejudice to the utility model aims and claim, can make a variety of Similar expression, such transformation are each fallen within the protection scope of the utility model.

Claims (6)

1. a kind of prestressing force intelligent tensioning work anchor, including work anchor ring (a1) and work collet (a2), it is characterised in that: described Work anchor ring (a1) includes backing plate face and pressure-bearing surface, and the pressure-bearing surface, which is equipped with, compresses docking blind hole (a3), and compression docking is blind Hole (a3) bottom hole runs through the work anchor hole (a4) for having the work anchor ring (a1), and the work anchor hole (a4) is in a circular table shape, the work Anchor hole (a4) internal diameter is biggish open at one end interior in compression docking blind hole (a3), work anchor hole (a4) internal diameter lesser one End opening is 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).

2. prestressing force intelligent tensioning work anchor according to claim 1, it is characterised in that: set on the work anchor ring (a1) There is location hole (a5), which is blind hole, is opened on the pressure-bearing surface.

3. prestressing force intelligent tensioning work anchor according to claim 2, it is characterised in that: the pressure-bearing surface is equipped with annular Groove (a6), the annular groove (a6) are disposed around compression docking blind hole (a3) outside.

4. prestressing force intelligent tensioning work anchor according to claim 3, it is characterised in that: work collet (a2) center It perforates equipped with presstressed reinforcing steel, the work collet (a2) is assembled by least two valve work clip sheet circumferential directions, the work collet (a2) Stub end diameter be greater than the work anchor hole (a4) maximum inner diameter and be less than it is described compress docking blind hole (a3) internal diameter, The stub end of the work collet (a2) is fallen in compression docking blind hole (a3) after stretching out the work anchor hole (a4).

5. prestressing force intelligent tensioning work anchor according to claim 2, it is characterised in that: the quantity of the location hole (a5) It is three, three location hole (a5) dispersed distributions are on the work anchor ring (a1).

6. prestressing force intelligent tensioning work anchor according to claim 3, it is characterised in that: set on the work anchor ring (a1) There is N number of compression docking blind hole (a3), N is positive integer, and N number of compression docking blind hole (a3) surrounds the work anchor ring (a1) center circumferential direction is uniformly distributed, and is respectively equipped with work anchor hole (a4), Suo Yousuo at each compression docking blind hole (a3) It states in work anchor hole (a4) and is respectively equipped with the work collet (a2).